From patchwork Sat Mar 2 23:33:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836797 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 451941575 for ; Sat, 2 Mar 2019 23:34:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 32CBF2A549 for ; Sat, 2 Mar 2019 23:34:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 25AAF2A560; Sat, 2 Mar 2019 23:34:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B11C62A549 for ; Sat, 2 Mar 2019 23:34:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727064AbfCBXeg (ORCPT ); Sat, 2 Mar 2019 18:34:36 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:60720 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726592AbfCBXef (ORCPT ); Sat, 2 Mar 2019 18:34:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569672; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=MZ9ks3Y59ktKQnPkSMePv8xwa6vk/+Bxn4tctFh7M5k=; b=mLLOK5U/llrCrapZQABiUfgdgJvVkOdnLkb6jmjGOib2j0st71M1j19MXQSkhGwg9W/pc3 qZzlAD8Mr0RpGcWSRcLDeoF3xj2gBh0WvrAlBxAQXjWo07X1tV5OVoyLxlkIOFsAPnX4Hl xpgec/KSsMaIPyagmdyFBsiGOMZ5P9w= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 01/27] dt-bindings: ingenic: Add DT bindings for TCU clocks Date: Sat, 2 Mar 2019 20:33:47 -0300 Message-Id: <20190302233413.14813-2-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This header provides clock numbers for the ingenic,tcu DT binding. Signed-off-by: Paul Cercueil Reviewed-by: Rob Herring Acked-by: Stephen Boyd Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v2: Use SPDX identifier for the license v3: No change v4: No change v5: s/JZ47*_/TCU_/ and dropped *_CLK_LAST defines v6: No change v7: No change v8: No change v9: No change v10: No change include/dt-bindings/clock/ingenic,tcu.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/dt-bindings/clock/ingenic,tcu.h diff --git a/include/dt-bindings/clock/ingenic,tcu.h b/include/dt-bindings/clock/ingenic,tcu.h new file mode 100644 index 000000000000..d569650a7945 --- /dev/null +++ b/include/dt-bindings/clock/ingenic,tcu.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides clock numbers for the ingenic,tcu DT binding. + */ + +#ifndef __DT_BINDINGS_CLOCK_INGENIC_TCU_H__ +#define __DT_BINDINGS_CLOCK_INGENIC_TCU_H__ + +#define TCU_CLK_TIMER0 0 +#define TCU_CLK_TIMER1 1 +#define TCU_CLK_TIMER2 2 +#define TCU_CLK_TIMER3 3 +#define TCU_CLK_TIMER4 4 +#define TCU_CLK_TIMER5 5 +#define TCU_CLK_TIMER6 6 +#define TCU_CLK_TIMER7 7 +#define TCU_CLK_WDT 8 +#define TCU_CLK_OST 9 + +#endif /* __DT_BINDINGS_CLOCK_INGENIC_TCU_H__ */ From patchwork Sat Mar 2 23:33:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836813 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F9111390 for ; Sat, 2 Mar 2019 23:35:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5FB0A2A562 for ; Sat, 2 Mar 2019 23:35:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 543CB2A549; Sat, 2 Mar 2019 23:35:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B8EC02A549 for ; Sat, 2 Mar 2019 23:34:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727156AbfCBXen (ORCPT ); Sat, 2 Mar 2019 18:34:43 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:60998 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726592AbfCBXem (ORCPT ); Sat, 2 Mar 2019 18:34:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569678; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=N4v8+wdBeOgQbaT/bQsNDNnAnZy/yPyWfkfuNUGkTUk=; b=ryVDKtHkThV/tcO8A/QCM3/KioXu2DLEhi8+95/9pTbccVquWz5xEDOu3WivdAaGT9tM1M L8aYKSsZsD8baH/Scr1ScO7lEmHQsWCF0ja2ioSEy+TxluhzqN+4JcBrDY6EcTa5cZlUMU NzM2HnnoEb0rhannwK49Rz0/Ip1VzMc= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 02/27] doc: Add doc for the Ingenic TCU hardware Date: Sat, 2 Mar 2019 20:33:48 -0300 Message-Id: <20190302233413.14813-3-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a documentation file about the Timer/Counter Unit (TCU) present in the Ingenic JZ47xx SoCs. The Timer/Counter Unit (TCU) in Ingenic JZ47xx SoCs is a multi-function hardware block. It features up to to eight channels, that can be used as counters, timers, or PWM. - JZ4725B, JZ4750, JZ4755 only have six TCU channels. The other SoCs all have eight channels. - JZ4725B introduced a separate channel, called Operating System Timer (OST). It is a 32-bit programmable timer. On JZ4770 and above, it is 64-bit. - Each one of the TCU channels has its own clock, which can be reparented to three different clocks (pclk, ext, rtc), gated, and reclocked, through their TCSR register. * The watchdog and OST hardware blocks also feature a TCSR register with the same format in their register space. * The TCU registers used to gate/ungate can also gate/ungate the watchdog and OST clocks. - Each TCU channel works in one of two modes: * mode TCU1: channels cannot work in sleep mode, but are easier to operate. * mode TCU2: channels can work in sleep mode, but the operation is a bit more complicated than with TCU1 channels. - The mode of each TCU channel depends on the SoC used: * On the oldest SoCs (up to JZ4740), all of the eight channels operate in TCU1 mode. * On JZ4725B, channel 5 operates as TCU2, the others operate as TCU1. * On newest SoCs (JZ4750 and above), channels 1-2 operate as TCU2, the others operate as TCU1. - Each channel can generate an interrupt. Some channels share an interrupt line, some don't, and this changes between SoC versions: * on older SoCs (JZ4740 and below), channel 0 and channel 1 have their own interrupt line; channels 2-7 share the last interrupt line. * On JZ4725B, channel 0 has its own interrupt; channels 1-5 share one interrupt line; the OST uses the last interrupt line. * on newer SoCs (JZ4750 and above), channel 5 has its own interrupt; channels 0-4 and (if eight channels) 6-7 all share one interrupt line; the OST uses the last interrupt line. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v4: New patch in this series v5: Added information about number of channels, and improved documentation about channel modes v6: Add info about OST (can be 32-bit on older SoCs) v7: No change v8: No change v9: No change v10: No change Documentation/mips/ingenic-tcu.txt | 60 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/mips/ingenic-tcu.txt diff --git a/Documentation/mips/ingenic-tcu.txt b/Documentation/mips/ingenic-tcu.txt new file mode 100644 index 000000000000..0ea35b2a46da --- /dev/null +++ b/Documentation/mips/ingenic-tcu.txt @@ -0,0 +1,60 @@ +Ingenic JZ47xx SoCs Timer/Counter Unit hardware +----------------------------------------------- + +The Timer/Counter Unit (TCU) in Ingenic JZ47xx SoCs is a multi-function +hardware block. It features up to to eight channels, that can be used as +counters, timers, or PWM. + +- JZ4725B, JZ4750, JZ4755 only have six TCU channels. The other SoCs all + have eight channels. + +- JZ4725B introduced a separate channel, called Operating System Timer + (OST). It is a 32-bit programmable timer. On JZ4770 and above, it is + 64-bit. + +- Each one of the TCU channels has its own clock, which can be reparented + to three different clocks (pclk, ext, rtc), gated, and reclocked, through + their TCSR register. + * The watchdog and OST hardware blocks also feature a TCSR register with + the same format in their register space. + * The TCU registers used to gate/ungate can also gate/ungate the watchdog + and OST clocks. + +- Each TCU channel works in one of two modes: + * mode TCU1: channels cannot work in sleep mode, but are easier to + operate. + * mode TCU2: channels can work in sleep mode, but the operation is a bit + more complicated than with TCU1 channels. + +- The mode of each TCU channel depends on the SoC used: + * On the oldest SoCs (up to JZ4740), all of the eight channels operate in + TCU1 mode. + * On JZ4725B, channel 5 operates as TCU2, the others operate as TCU1. + * On newest SoCs (JZ4750 and above), channels 1-2 operate as TCU2, the + others operate as TCU1. + +- Each channel can generate an interrupt. Some channels share an interrupt + line, some don't, and this changes between SoC versions: + * on older SoCs (JZ4740 and below), channel 0 and channel 1 have their + own interrupt line; channels 2-7 share the last interrupt line. + * On JZ4725B, channel 0 has its own interrupt; channels 1-5 share one + interrupt line; the OST uses the last interrupt line. + * on newer SoCs (JZ4750 and above), channel 5 has its own interrupt; + channels 0-4 and (if eight channels) 6-7 all share one interrupt line; + the OST uses the last interrupt line. + +Implementation +-------------- + +The functionalities of the TCU hardware are spread across multiple drivers: +- clocks/irq/timer: drivers/clocksource/ingenic-timer.c +- PWM: drivers/pwm/pwm-jz4740.c +- watchdog: drivers/watchdog/jz4740_wdt.c +- OST: drivers/clocksource/ingenic-ost.c + +Because various functionalities of the TCU that belong to different drivers +and frameworks can be controlled from the same registers, all of these +drivers access their registers through the same regmap. + +For more information regarding the devicetree bindings of the TCU drivers, +have a look at Documentation/devicetree/bindings/mfd/ingenic,tcu.txt. From patchwork Sat Mar 2 23:33:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836807 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 750481390 for ; Sat, 2 Mar 2019 23:34:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5FF922A55F for ; Sat, 2 Mar 2019 23:34:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 545A72A562; Sat, 2 Mar 2019 23:34:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 995942A55F for ; Sat, 2 Mar 2019 23:34:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727217AbfCBXet (ORCPT ); Sat, 2 Mar 2019 18:34:49 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:32866 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727185AbfCBXes (ORCPT ); Sat, 2 Mar 2019 18:34:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569684; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=cr2s3Y6CYWa43XOZjwG/0w4tuYU5ajsSSTresRfY/4c=; b=e+bG1J70/y+4mPrAUoqRkM/BczSeZtr8wmiZgSAMswtzmFAolqOiqdepqgBVPN/hT6a7t4 b1N3q+YCTp3TyJHq7uNwrMBt4pz4ntchrroqdefoNNke0DfnDNHZfVvjeP8YOgD7sKdeXj HwA4iPhfeYgp1KklZ9Ca4sXt41JtbGI= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 03/27] dt-bindings: Add doc for the Ingenic TCU drivers Date: Sat, 2 Mar 2019 20:33:49 -0300 Message-Id: <20190302233413.14813-4-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add documentation about how to properly use the Ingenic TCU (Timer/Counter Unit) drivers from devicetree. Signed-off-by: Paul Cercueil Reviewed-by: Rob Herring Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v4: New patch in this series. Corresponds to V2 patches 3-4-5 with added content. v5: - Edited PWM/watchdog DT bindings documentation to point to the new document. - Moved main document to Documentation/devicetree/bindings/timer/ingenic,tcu.txt - Updated documentation to reflect the new devicetree bindings. v6: - Removed PWM/watchdog documentation files as asked by upstream - Removed doc about properties that should be implicit - Removed doc about ingenic,timer-channel / ingenic,clocksource-channel as they are gone - Fix WDT clock name in the binding doc - Fix lengths of register areas in watchdog/pwm nodes v7: No change v8: - Fix address of the PWM node - Added doc about system timer and clocksource children nodes v9: - Remove doc about system timer and clocksource children nodes... - Add doc about ingenic,pwm-channels-mask property v10: No change .../devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt | 25 ---- .../devicetree/bindings/timer/ingenic,tcu.txt | 139 +++++++++++++++++++++ .../bindings/watchdog/ingenic,jz4740-wdt.txt | 17 --- 3 files changed, 139 insertions(+), 42 deletions(-) delete mode 100644 Documentation/devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt create mode 100644 Documentation/devicetree/bindings/timer/ingenic,tcu.txt delete mode 100644 Documentation/devicetree/bindings/watchdog/ingenic,jz4740-wdt.txt diff --git a/Documentation/devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt b/Documentation/devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt deleted file mode 100644 index 7d9d3f90641b..000000000000 --- a/Documentation/devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt +++ /dev/null @@ -1,25 +0,0 @@ -Ingenic JZ47xx PWM Controller -============================= - -Required properties: -- compatible: One of: - * "ingenic,jz4740-pwm" - * "ingenic,jz4770-pwm" - * "ingenic,jz4780-pwm" -- #pwm-cells: Should be 3. See pwm.txt in this directory for a description - of the cells format. -- clocks : phandle to the external clock. -- clock-names : Should be "ext". - - -Example: - - pwm: pwm@10002000 { - compatible = "ingenic,jz4740-pwm"; - reg = <0x10002000 0x1000>; - - #pwm-cells = <3>; - - clocks = <&ext>; - clock-names = "ext"; - }; diff --git a/Documentation/devicetree/bindings/timer/ingenic,tcu.txt b/Documentation/devicetree/bindings/timer/ingenic,tcu.txt new file mode 100644 index 000000000000..ec9639700115 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/ingenic,tcu.txt @@ -0,0 +1,139 @@ +Ingenic JZ47xx SoCs Timer/Counter Unit devicetree bindings +========================================================== + +For a description of the TCU hardware and drivers, have a look at +Documentation/mips/ingenic-tcu.txt. + +Required properties: + +- compatible: Must be one of: + * ingenic,jz4740-tcu + * ingenic,jz4725b-tcu + * ingenic,jz4770-tcu +- reg: Should be the offset/length value corresponding to the TCU registers +- clocks: List of phandle & clock specifiers for clocks external to the TCU. + The "pclk", "rtc", "ext" and "tcu" clocks should be provided. +- clock-names: List of name strings for the external clocks. +- #clock-cells: Should be <1>; + Clock consumers specify this argument to identify a clock. The valid values + may be found in . +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The value should be 1. +- interrupt-parent : phandle of the interrupt controller. +- interrupts : Specifies the interrupt the controller is connected to. + +Optional properties: + +- ingenic,pwm-channels-mask: Bitmask of TCU channels reserved for PWM use. + Default value is 0xfe or 0xfc if the SoC does not have the OS Timer. + + +Children nodes +========================================================== + + +PWM node: +--------- + +Required properties: + +- compatible: Must be one of: + * ingenic,jz4740-pwm + * ingenic,jz4725b-pwm +- #pwm-cells: Should be 3. See ../pwm/pwm.txt for a description of the cell + format. +- clocks: List of phandle & clock specifiers for the TCU clocks. +- clock-names: List of name strings for the TCU clocks. + + +Watchdog node: +-------------- + +Required properties: + +- compatible: Must be one of: + * ingenic,jz4740-watchdog + * ingenic,jz4780-watchdog +- clocks: phandle to the WDT clock +- clock-names: should be "wdt" + + +OS Timer node: +--------- + +Required properties: + +- compatible: Must be one of: + * ingenic,jz4725b-ost + * ingenic,jz4770-ost +- clocks: phandle to the OST clock +- clock-names: should be "ost" +- interrupts : Specifies the interrupt the OST is connected to. + + +Example +========================================================== + +#include +#include + +/ { + tcu: timer@10002000 { + compatible = "ingenic,jz4770-tcu"; + reg = <0x10002000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x10002000 0x1000>; + + #clock-cells = <1>; + + clocks = <&cgu JZ4770_CLK_RTC + &cgu JZ4770_CLK_EXT + &cgu JZ4770_CLK_PCLK + &cgu JZ4770_CLK_EXT>; + clock-names = "rtc", "ext", "pclk", "tcu"; + + interrupt-controller; + #interrupt-cells = <1>; + + interrupt-parent = <&intc>; + interrupts = <27 26 25>; + + watchdog: watchdog@0 { + compatible = "ingenic,jz4740-watchdog"; + reg = <0x0 0xc>; + + clocks = <&tcu TCU_CLK_WDT>; + clock-names = "wdt"; + }; + + pwm: pwm@40 { + compatible = "ingenic,jz4740-pwm"; + reg = <0x40 0x80>; + + #pwm-cells = <3>; + + clocks = <&tcu TCU_CLK_TIMER0 + &tcu TCU_CLK_TIMER1 + &tcu TCU_CLK_TIMER2 + &tcu TCU_CLK_TIMER3 + &tcu TCU_CLK_TIMER4 + &tcu TCU_CLK_TIMER5 + &tcu TCU_CLK_TIMER6 + &tcu TCU_CLK_TIMER7>; + clock-names = "timer0", "timer1", "timer2", "timer3", + "timer4", "timer5", "timer6", "timer7"; + }; + + ost: timer@e0 { + compatible = "ingenic,jz4770-ost"; + reg = <0xe0 0x20>; + + clocks = <&tcu TCU_CLK_OST>; + clock-names = "ost"; + + interrupts = <15>; + }; + }; +}; diff --git a/Documentation/devicetree/bindings/watchdog/ingenic,jz4740-wdt.txt b/Documentation/devicetree/bindings/watchdog/ingenic,jz4740-wdt.txt deleted file mode 100644 index ce1cb72d5345..000000000000 --- a/Documentation/devicetree/bindings/watchdog/ingenic,jz4740-wdt.txt +++ /dev/null @@ -1,17 +0,0 @@ -Ingenic Watchdog Timer (WDT) Controller for JZ4740 & JZ4780 - -Required properties: -compatible: "ingenic,jz4740-watchdog" or "ingenic,jz4780-watchdog" -reg: Register address and length for watchdog registers -clocks: phandle to the RTC clock -clock-names: should be "rtc" - -Example: - -watchdog: jz4740-watchdog@10002000 { - compatible = "ingenic,jz4740-watchdog"; - reg = <0x10002000 0x10>; - - clocks = <&cgu JZ4740_CLK_RTC>; - clock-names = "rtc"; -}; From patchwork Sat Mar 2 23:33:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836815 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 82CF61390 for ; Sat, 2 Mar 2019 23:35:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 69B7D2A549 for ; Sat, 2 Mar 2019 23:35:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 587CF2A560; Sat, 2 Mar 2019 23:35:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 895F92A549 for ; Sat, 2 Mar 2019 23:35:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727265AbfCBXe4 (ORCPT ); Sat, 2 Mar 2019 18:34:56 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33002 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726901AbfCBXez (ORCPT ); Sat, 2 Mar 2019 18:34:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569691; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=Hi15wIdfE8wSPrU8Mvj8+INfN2Ggy/ewUpssFwVAC2Q=; b=NB5VQ6XDu6+TjnPz1vVMnvtPmrwgLIRY7B1SgHJQPXtKAx/MYQKtbMA/Y7Lc4tLLNt7aLa YVOEh0j7j2y9/D9bYN6GxmLEJzxTlPcVb7/KzZHLZiAHXy02el3wdH5+Bd2LpUJVsSL19g lB1j6BhegIdSUHFeLdYYddO4wRCXl9w= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 04/27] clocksource: Add a new timer-ingenic driver Date: Sat, 2 Mar 2019 20:33:50 -0300 Message-Id: <20190302233413.14813-5-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This driver handles the TCU (Timer Counter Unit) present on the Ingenic JZ47xx SoCs, and provides the kernel with a system timer, and optionally with a clocksource and a sched_clock. It also provides clocks and interrupt handling to client drivers. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v2: Use SPDX identifier for the license v3: - Move documentation to its own patch - Search the devicetree for PWM clients, and use all the TCU channels that won't be used for PWM v4: - Add documentation about why we search for PWM clients - Verify that the PWM clients are for the TCU PWM driver v5: Major overhaul. Too many changes to list. Consider it's a new patch. v6: - Add two API functions ingenic_tcu_request_channel and ingenic_tcu_release_channel. To be used by the PWM driver to request the use of a TCU channel. The driver will now dynamically move away the system timer or clocksource to a new TCU channel. - The system timer now defaults to channel 0, the clocksource now defaults to channel 1 and is no more optional. The ingenic,timer-channel and ingenic,clocksource-channel devicetree properties are now gone. - Fix round_rate / set_rate not calculating the prescale divider the same way. This caused problems when (parent_rate / div) would give a non-integer result. The behaviour is correct now. - The clocksource clock is turned off on suspend now. v7: Fix section mismatch by using builtin_platform_driver_probe() v8: - Removed ingenic_tcu_[request,release]_channel, and the mechanism to dynamically change the TCU channel of the system timer or the clocksource. - The driver's devicetree node can now have two more children nodes, that correspond to the system timer and clocksource. For these two, the driver will use the TCU timer that correspond to the memory resource supplied in their respective node. v9: - Removed support for clocksource / timer children devicetree nodes. Now, we use a property "ingenic,pwm-channels-mask" to know which PWM channels are reserved for PWM use and should not be used as OS timers. v10: - Use CLK_SET_RATE_UNGATE instead of CLK_SET_RATE_GATE + manually un-gating the clock before changing rate. Same for re-parenting. - Unconditionally create the clocksource and sched_clock even if the SoC possesses a OS Timer. That gives the choice back to the user which clocksource should be selected. - Use subsys_initcall() instead of builtin_platform_driver_probe(). The OS Timer driver calls builtin_platform_driver_probe, which requires the device to be created before that. - Cosmetic cleanups drivers/clocksource/Kconfig | 10 + drivers/clocksource/Makefile | 1 + drivers/clocksource/ingenic-timer.c | 903 ++++++++++++++++++++++++++++++++++++ drivers/clocksource/ingenic-timer.h | 15 + include/linux/mfd/ingenic-tcu.h | 2 + 5 files changed, 931 insertions(+) create mode 100644 drivers/clocksource/ingenic-timer.c create mode 100644 drivers/clocksource/ingenic-timer.h diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index a9e26f6a81a1..d841934e126c 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -634,4 +634,14 @@ config GX6605S_TIMER help This option enables support for gx6605s SOC's timer. +config INGENIC_TIMER + bool "Clocksource/timer using the TCU in Ingenic JZ SoCs" + depends on MIPS || COMPILE_TEST + depends on COMMON_CLK + select TIMER_OF + select IRQ_DOMAIN + select REGMAP + help + Support for the timer/counter unit of the Ingenic JZ SoCs. + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index cdd210ff89ea..3eb8c544917f 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_ASM9260_TIMER) += asm9260_timer.o obj-$(CONFIG_H8300_TMR8) += h8300_timer8.o obj-$(CONFIG_H8300_TMR16) += h8300_timer16.o obj-$(CONFIG_H8300_TPU) += h8300_tpu.o +obj-$(CONFIG_INGENIC_TIMER) += ingenic-timer.o obj-$(CONFIG_CLKSRC_ST_LPC) += clksrc_st_lpc.o obj-$(CONFIG_X86_NUMACHIP) += numachip.o obj-$(CONFIG_ATCPIT100_TIMER) += timer-atcpit100.o diff --git a/drivers/clocksource/ingenic-timer.c b/drivers/clocksource/ingenic-timer.c new file mode 100644 index 000000000000..9529f6389ea4 --- /dev/null +++ b/drivers/clocksource/ingenic-timer.c @@ -0,0 +1,903 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * JZ47xx SoCs TCU IRQ driver + * Copyright (C) 2018 Paul Cercueil + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "ingenic-timer.h" + +/* 8 channels max + watchdog + OST */ +#define TCU_CLK_COUNT 10 + +enum tcu_clk_parent { + TCU_PARENT_PCLK, + TCU_PARENT_RTC, + TCU_PARENT_EXT, +}; + +struct ingenic_soc_info { + unsigned char num_channels; + bool has_ost; +}; + +struct ingenic_tcu_clk_info { + struct clk_init_data init_data; + u8 gate_bit; + u8 tcsr_reg; +}; + +struct ingenic_tcu_clk { + struct clk_hw hw; + + struct regmap *map; + const struct ingenic_tcu_clk_info *info; + + unsigned int idx; +}; + +struct ingenic_tcu { + const struct ingenic_soc_info *soc_info; + struct regmap *map; + struct clk *clk, *timer_clk, *cs_clk; + + struct irq_domain *domain; + unsigned int nb_parent_irqs; + u32 parent_irqs[3]; + + struct clk_hw_onecell_data *clocks; + + unsigned int timer_channel, cs_channel; + struct clock_event_device cevt; + struct clocksource cs; + char name[4]; + + unsigned long pwm_channels_mask; +}; + +static struct ingenic_tcu *ingenic_tcu; + +void __iomem *ingenic_tcu_base; +EXPORT_SYMBOL_GPL(ingenic_tcu_base); + +static inline struct ingenic_tcu_clk *to_tcu_clk(struct clk_hw *hw) +{ + return container_of(hw, struct ingenic_tcu_clk, hw); +} + +static int ingenic_tcu_enable(struct clk_hw *hw) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + + regmap_write(tcu_clk->map, TCU_REG_TSCR, BIT(info->gate_bit)); + + return 0; +} + +static void ingenic_tcu_disable(struct clk_hw *hw) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + + regmap_write(tcu_clk->map, TCU_REG_TSSR, BIT(info->gate_bit)); +} + +static int ingenic_tcu_is_enabled(struct clk_hw *hw) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + unsigned int value; + + regmap_read(tcu_clk->map, TCU_REG_TSR, &value); + + return !(value & BIT(info->gate_bit)); +} + +static u8 ingenic_tcu_get_parent(struct clk_hw *hw) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + unsigned int val = 0; + int ret; + + ret = regmap_read(tcu_clk->map, info->tcsr_reg, &val); + WARN_ONCE(ret < 0, "Unable to read TCSR %i", tcu_clk->idx); + + return ffs(val & TCU_TCSR_PARENT_CLOCK_MASK) - 1; +} + +static int ingenic_tcu_set_parent(struct clk_hw *hw, u8 idx) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + int ret, enabled; + + /* To be able to access TCSR we must ungate the clock supply and we gate + * it again when done. + */ + enabled = ingenic_tcu_is_enabled(hw); + ingenic_tcu_enable(hw); + + ret = regmap_update_bits(tcu_clk->map, info->tcsr_reg, + TCU_TCSR_PARENT_CLOCK_MASK, BIT(idx)); + WARN_ONCE(ret < 0, "Unable to update TCSR %i", tcu_clk->idx); + + if (!enabled) + ingenic_tcu_disable(hw); + + return 0; +} + +static unsigned long ingenic_tcu_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + unsigned int prescale; + int ret; + + ret = regmap_read(tcu_clk->map, info->tcsr_reg, &prescale); + WARN_ONCE(ret < 0, "Unable to read TCSR %i", tcu_clk->idx); + + prescale = (prescale & TCU_TCSR_PRESCALE_MASK) >> TCU_TCSR_PRESCALE_LSB; + + return parent_rate >> (prescale * 2); +} + +static u8 ingenic_tcu_get_prescale(unsigned long rate, unsigned long req_rate) +{ + u8 prescale; + + for (prescale = 0; prescale < 5; prescale++) + if ((rate >> (prescale * 2)) <= req_rate) + return prescale; + + return 5; /* /1024 divider */ +} + +static long ingenic_tcu_round_rate(struct clk_hw *hw, unsigned long req_rate, + unsigned long *parent_rate) +{ + unsigned long rate = *parent_rate; + u8 prescale; + + if (req_rate > rate) + return -EINVAL; + + prescale = ingenic_tcu_get_prescale(rate, req_rate); + + return rate >> (prescale * 2); +} + +static int ingenic_tcu_set_rate(struct clk_hw *hw, unsigned long req_rate, + unsigned long parent_rate) +{ + struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw); + const struct ingenic_tcu_clk_info *info = tcu_clk->info; + struct regmap *map = tcu_clk->map; + u8 prescale = ingenic_tcu_get_prescale(parent_rate, req_rate); + int ret; + + ret = regmap_update_bits(map, info->tcsr_reg, + TCU_TCSR_PRESCALE_MASK, + prescale << TCU_TCSR_PRESCALE_LSB); + WARN_ONCE(ret < 0, "Unable to update TCSR %i", tcu_clk->idx); + + return 0; +} + +static const struct clk_ops ingenic_tcu_clk_ops = { + .get_parent = ingenic_tcu_get_parent, + .set_parent = ingenic_tcu_set_parent, + + .recalc_rate = ingenic_tcu_recalc_rate, + .round_rate = ingenic_tcu_round_rate, + .set_rate = ingenic_tcu_set_rate, + + .enable = ingenic_tcu_enable, + .disable = ingenic_tcu_disable, + .is_enabled = ingenic_tcu_is_enabled, +}; + +static const char * const ingenic_tcu_timer_parents[] = { + [TCU_PARENT_PCLK] = "pclk", + [TCU_PARENT_RTC] = "rtc", + [TCU_PARENT_EXT] = "ext", +}; + +#define DEF_TIMER(_name, _gate_bit, _tcsr) \ + { \ + .init_data = { \ + .name = _name, \ + .parent_names = ingenic_tcu_timer_parents, \ + .num_parents = ARRAY_SIZE(ingenic_tcu_timer_parents),\ + .ops = &ingenic_tcu_clk_ops, \ + .flags = CLK_SET_RATE_UNGATE, \ + }, \ + .gate_bit = _gate_bit, \ + .tcsr_reg = _tcsr, \ + } +static const struct ingenic_tcu_clk_info ingenic_tcu_clk_info[] = { + [TCU_CLK_TIMER0] = DEF_TIMER("timer0", 0, TCU_REG_TCSRc(0)), + [TCU_CLK_TIMER1] = DEF_TIMER("timer1", 1, TCU_REG_TCSRc(1)), + [TCU_CLK_TIMER2] = DEF_TIMER("timer2", 2, TCU_REG_TCSRc(2)), + [TCU_CLK_TIMER3] = DEF_TIMER("timer3", 3, TCU_REG_TCSRc(3)), + [TCU_CLK_TIMER4] = DEF_TIMER("timer4", 4, TCU_REG_TCSRc(4)), + [TCU_CLK_TIMER5] = DEF_TIMER("timer5", 5, TCU_REG_TCSRc(5)), + [TCU_CLK_TIMER6] = DEF_TIMER("timer6", 6, TCU_REG_TCSRc(6)), + [TCU_CLK_TIMER7] = DEF_TIMER("timer7", 7, TCU_REG_TCSRc(7)), +}; + +static const struct ingenic_tcu_clk_info ingenic_tcu_watchdog_clk_info = + DEF_TIMER("wdt", 16, TCU_REG_WDT_TCSR); +static const struct ingenic_tcu_clk_info ingenic_tcu_ost_clk_info = + DEF_TIMER("ost", 15, TCU_REG_OST_TCSR); +#undef DEF_TIMER + +static void ingenic_tcu_intc_cascade(struct irq_desc *desc) +{ + struct irq_chip *irq_chip = irq_data_get_irq_chip(&desc->irq_data); + struct irq_domain *domain = irq_desc_get_handler_data(desc); + struct irq_chip_generic *gc = irq_get_domain_generic_chip(domain, 0); + struct regmap *map = gc->private; + uint32_t irq_reg, irq_mask; + unsigned int i; + + regmap_read(map, TCU_REG_TFR, &irq_reg); + regmap_read(map, TCU_REG_TMR, &irq_mask); + + chained_irq_enter(irq_chip, desc); + + irq_reg &= ~irq_mask; + + for_each_set_bit(i, (unsigned long *)&irq_reg, 32) + generic_handle_irq(irq_linear_revmap(domain, i)); + + chained_irq_exit(irq_chip, desc); +} + +static void ingenic_tcu_gc_unmask_enable_reg(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct irq_chip_type *ct = irq_data_get_chip_type(d); + struct regmap *map = gc->private; + u32 mask = d->mask; + + irq_gc_lock(gc); + regmap_write(map, ct->regs.ack, mask); + regmap_write(map, ct->regs.enable, mask); + *ct->mask_cache |= mask; + irq_gc_unlock(gc); +} + +static void ingenic_tcu_gc_mask_disable_reg(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct irq_chip_type *ct = irq_data_get_chip_type(d); + struct regmap *map = gc->private; + u32 mask = d->mask; + + irq_gc_lock(gc); + regmap_write(map, ct->regs.disable, mask); + *ct->mask_cache &= ~mask; + irq_gc_unlock(gc); +} + +static void ingenic_tcu_gc_mask_disable_reg_and_ack(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct irq_chip_type *ct = irq_data_get_chip_type(d); + struct regmap *map = gc->private; + u32 mask = d->mask; + + irq_gc_lock(gc); + regmap_write(map, ct->regs.ack, mask); + regmap_write(map, ct->regs.disable, mask); + irq_gc_unlock(gc); +} + +static u64 notrace ingenic_tcu_timer_read(void) +{ + unsigned int channel = ingenic_tcu->cs_channel; + u16 count; + + count = readw(ingenic_tcu_base + TCU_REG_TCNTc(channel)); + + return count; +} + +static u64 notrace ingenic_tcu_timer_cs_read(struct clocksource *cs) +{ + return ingenic_tcu_timer_read(); +} + +static inline struct ingenic_tcu *to_ingenic_tcu(struct clock_event_device *evt) +{ + return container_of(evt, struct ingenic_tcu, cevt); +} + +static int ingenic_tcu_cevt_set_state_shutdown(struct clock_event_device *evt) +{ + struct ingenic_tcu *tcu = to_ingenic_tcu(evt); + + regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel)); + + return 0; +} + +static int ingenic_tcu_cevt_set_next(unsigned long next, + struct clock_event_device *evt) +{ + struct ingenic_tcu *tcu = to_ingenic_tcu(evt); + + if (next > 0xffff) + return -EINVAL; + + regmap_write(tcu->map, TCU_REG_TDFRc(tcu->timer_channel), next); + regmap_write(tcu->map, TCU_REG_TCNTc(tcu->timer_channel), 0); + regmap_write(tcu->map, TCU_REG_TESR, BIT(tcu->timer_channel)); + + return 0; +} + +static irqreturn_t ingenic_tcu_cevt_cb(int irq, void *dev_id) +{ + struct clock_event_device *evt = dev_id; + struct ingenic_tcu *tcu = to_ingenic_tcu(evt); + + regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel)); + + if (evt->event_handler) + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static int __init ingenic_tcu_register_clock(struct ingenic_tcu *tcu, + unsigned int idx, enum tcu_clk_parent parent, + const struct ingenic_tcu_clk_info *info, + struct clk_hw_onecell_data *clocks) +{ + struct ingenic_tcu_clk *tcu_clk; + int err; + + tcu_clk = kzalloc(sizeof(*tcu_clk), GFP_KERNEL); + if (!tcu_clk) + return -ENOMEM; + + tcu_clk->hw.init = &info->init_data; + tcu_clk->idx = idx; + tcu_clk->info = info; + tcu_clk->map = tcu->map; + + /* Reset channel and clock divider, set default parent */ + ingenic_tcu_enable(&tcu_clk->hw); + regmap_update_bits(tcu->map, info->tcsr_reg, 0xffff, BIT(parent)); + ingenic_tcu_disable(&tcu_clk->hw); + + err = clk_hw_register(NULL, &tcu_clk->hw); + if (err) + goto err_free_tcu_clk; + + err = clk_hw_register_clkdev(&tcu_clk->hw, info->init_data.name, NULL); + if (err) + goto err_clk_unregister; + + clocks->hws[idx] = &tcu_clk->hw; + + return 0; + +err_clk_unregister: + clk_hw_unregister(&tcu_clk->hw); +err_free_tcu_clk: + kfree(tcu_clk); + return err; +} + +static int __init ingenic_tcu_clk_init(struct ingenic_tcu *tcu, + struct device_node *np) +{ + size_t i; + int ret; + + tcu->clocks = kzalloc(sizeof(*tcu->clocks) + + sizeof(*tcu->clocks->hws) * TCU_CLK_COUNT, + GFP_KERNEL); + if (!tcu->clocks) + return -ENOMEM; + + tcu->clocks->num = TCU_CLK_COUNT; + + for (i = 0; i < tcu->soc_info->num_channels; i++) { + ret = ingenic_tcu_register_clock(tcu, i, TCU_PARENT_EXT, + &ingenic_tcu_clk_info[i], + tcu->clocks); + if (ret) { + pr_crit("ingenic-timer: cannot register clock %i\n", i); + goto err_unregister_timer_clocks; + } + } + + /* We set EXT as the default parent clock for all the TCU clocks + * except for the watchdog one, where we set the RTC clock as the + * parent. Since the EXT and PCLK are much faster than the RTC clock, + * the watchdog would kick after a maximum time of 5s, and we might + * want a slower kicking time. + */ + ret = ingenic_tcu_register_clock(tcu, TCU_CLK_WDT, TCU_PARENT_RTC, + &ingenic_tcu_watchdog_clk_info, + tcu->clocks); + if (ret) { + pr_crit("ingenic-timer: cannot register watchdog clock\n"); + goto err_unregister_timer_clocks; + } + + if (tcu->soc_info->has_ost) { + ret = ingenic_tcu_register_clock(tcu, TCU_CLK_OST, + TCU_PARENT_EXT, + &ingenic_tcu_ost_clk_info, + tcu->clocks); + if (ret) { + pr_crit("ingenic-timer: cannot register ost clock\n"); + goto err_unregister_watchdog_clock; + } + } + + ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, tcu->clocks); + if (ret) { + pr_crit("ingenic-timer: cannot add OF clock provider\n"); + goto err_unregister_ost_clock; + } + + return 0; + +err_unregister_ost_clock: + if (tcu->soc_info->has_ost) + clk_hw_unregister(tcu->clocks->hws[i + 1]); +err_unregister_watchdog_clock: + clk_hw_unregister(tcu->clocks->hws[i]); +err_unregister_timer_clocks: + for (i = 0; i < tcu->clocks->num; i++) + if (tcu->clocks->hws[i]) + clk_hw_unregister(tcu->clocks->hws[i]); + kfree(tcu->clocks); + return ret; +} + +static void __init ingenic_tcu_clk_cleanup(struct ingenic_tcu *tcu, + struct device_node *np) +{ + unsigned int i; + + of_clk_del_provider(np); + + for (i = 0; i < tcu->clocks->num; i++) + clk_hw_unregister(tcu->clocks->hws[i]); + kfree(tcu->clocks); +} + +static int __init ingenic_tcu_intc_init(struct ingenic_tcu *tcu, + struct device_node *np) +{ + struct irq_chip_generic *gc; + struct irq_chip_type *ct; + int err, i, irqs; + + irqs = of_property_count_elems_of_size(np, "interrupts", sizeof(u32)); + if (irqs < 0 || irqs > ARRAY_SIZE(tcu->parent_irqs)) + return -EINVAL; + + tcu->nb_parent_irqs = irqs; + + tcu->domain = irq_domain_add_linear(np, 32, &irq_generic_chip_ops, + NULL); + if (!tcu->domain) + return -ENOMEM; + + err = irq_alloc_domain_generic_chips(tcu->domain, 32, 1, "TCU", + handle_level_irq, 0, + IRQ_NOPROBE | IRQ_LEVEL, 0); + if (err) + goto out_domain_remove; + + gc = irq_get_domain_generic_chip(tcu->domain, 0); + ct = gc->chip_types; + + gc->wake_enabled = IRQ_MSK(32); + gc->private = tcu->map; + + ct->regs.disable = TCU_REG_TMSR; + ct->regs.enable = TCU_REG_TMCR; + ct->regs.ack = TCU_REG_TFCR; + ct->chip.irq_unmask = ingenic_tcu_gc_unmask_enable_reg; + ct->chip.irq_mask = ingenic_tcu_gc_mask_disable_reg; + ct->chip.irq_mask_ack = ingenic_tcu_gc_mask_disable_reg_and_ack; + ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE; + + /* Mask all IRQs by default */ + regmap_write(tcu->map, TCU_REG_TMSR, IRQ_MSK(32)); + + /* On JZ4740, timer 0 and timer 1 have their own interrupt line; + * timers 2-7 share one interrupt. + * On SoCs >= JZ4770, timer 5 has its own interrupt line; + * timers 0-4 and 6-7 share one single interrupt. + * + * To keep things simple, we just register the same handler to + * all parent interrupts. The handler will properly detect which + * channel fired the interrupt. + */ + for (i = 0; i < irqs; i++) { + tcu->parent_irqs[i] = irq_of_parse_and_map(np, i); + if (!tcu->parent_irqs[i]) { + err = -EINVAL; + goto out_unmap_irqs; + } + + irq_set_chained_handler_and_data(tcu->parent_irqs[i], + ingenic_tcu_intc_cascade, + tcu->domain); + } + + return 0; + +out_unmap_irqs: + for (; i > 0; i--) + irq_dispose_mapping(tcu->parent_irqs[i - 1]); +out_domain_remove: + irq_domain_remove(tcu->domain); + return err; +} + +static void __init ingenic_tcu_intc_cleanup(struct ingenic_tcu *tcu) +{ + unsigned int i; + + for (i = 0; i < tcu->nb_parent_irqs; i++) + irq_dispose_mapping(tcu->parent_irqs[i]); + + irq_domain_remove(tcu->domain); +} + +static int __init ingenic_tcu_timer_init(struct ingenic_tcu *tcu) +{ + unsigned int timer_virq; + unsigned long rate; + int err; + + tcu->timer_clk = tcu->clocks->hws[tcu->timer_channel]->clk; + + err = clk_prepare_enable(tcu->timer_clk); + if (err) + return err; + + rate = clk_get_rate(tcu->timer_clk); + if (!rate) { + err = -EINVAL; + goto err_clk_disable; + } + + timer_virq = irq_create_mapping(tcu->domain, tcu->timer_channel); + if (!timer_virq) { + err = -EINVAL; + goto err_clk_disable; + } + + snprintf(tcu->name, sizeof(tcu->name), "TCU"); + + err = request_irq(timer_virq, ingenic_tcu_cevt_cb, IRQF_TIMER, + tcu->name, &tcu->cevt); + if (err) + goto err_irq_dispose_mapping; + + tcu->cevt.cpumask = cpumask_of(smp_processor_id()); + tcu->cevt.features = CLOCK_EVT_FEAT_ONESHOT; + tcu->cevt.name = tcu->name; + tcu->cevt.rating = 200; + tcu->cevt.set_state_shutdown = ingenic_tcu_cevt_set_state_shutdown; + tcu->cevt.set_next_event = ingenic_tcu_cevt_set_next; + + clockevents_config_and_register(&tcu->cevt, rate, 10, 0xffff); + + return 0; + +err_irq_dispose_mapping: + irq_dispose_mapping(timer_virq); +err_clk_disable: + clk_disable_unprepare(tcu->timer_clk); + return err; +} + +static int __init ingenic_tcu_clocksource_init(struct ingenic_tcu *tcu) +{ + unsigned int channel = tcu->cs_channel; + struct clocksource *cs = &tcu->cs; + unsigned long rate; + int err; + + tcu->cs_clk = tcu->clocks->hws[channel]->clk; + + err = clk_prepare_enable(tcu->cs_clk); + if (err) + return err; + + rate = clk_get_rate(tcu->cs_clk); + if (!rate) { + err = -EINVAL; + goto err_clk_disable; + } + + /* Reset channel */ + regmap_update_bits(tcu->map, TCU_REG_TCSRc(channel), + 0xffff & ~TCU_TCSR_RESERVED_BITS, 0); + + /* Reset counter */ + regmap_write(tcu->map, TCU_REG_TDFRc(channel), 0xffff); + regmap_write(tcu->map, TCU_REG_TCNTc(channel), 0); + + /* Enable channel */ + regmap_write(tcu->map, TCU_REG_TESR, BIT(channel)); + + cs->name = "ingenic-timer"; + cs->rating = 200; + cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; + cs->mask = CLOCKSOURCE_MASK(16); + cs->read = ingenic_tcu_timer_cs_read; + + err = clocksource_register_hz(cs, rate); + if (err) + goto err_clk_disable; + + return 0; + +err_clk_disable: + clk_disable_unprepare(tcu->cs_clk); + return err; +} + +static void __init ingenic_tcu_clocksource_cleanup(struct ingenic_tcu *tcu) +{ + clocksource_unregister(&tcu->cs); + clk_disable_unprepare(tcu->cs_clk); +} + +static const struct regmap_config ingenic_tcu_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static const struct ingenic_soc_info jz4740_soc_info = { + .num_channels = 8, + .has_ost = false, +}; + +static const struct ingenic_soc_info jz4725b_soc_info = { + .num_channels = 6, + .has_ost = true, +}; + +static const struct ingenic_soc_info jz4770_soc_info = { + .num_channels = 8, + .has_ost = true, +}; + +static const struct of_device_id ingenic_tcu_of_match[] = { + { .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, }, + { .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, }, + { .compatible = "ingenic,jz4770-tcu", .data = &jz4770_soc_info, }, + { } +}; + +static int __init ingenic_tcu_init(struct device_node *np) +{ + const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np); + const struct ingenic_soc_info *soc_info = id->data; + struct ingenic_tcu *tcu; + struct resource res; + void __iomem *base; + long rate; + int ret; + + of_node_clear_flag(np, OF_POPULATED); + + tcu = kzalloc(sizeof(*tcu), GFP_KERNEL); + if (!tcu) + return -ENOMEM; + + /* Enable all TCU channels for PWM use by default except channel 0 + * and channel 1. + */ + tcu->pwm_channels_mask = GENMASK(soc_info->num_channels - 1, 2); + of_property_read_u32(np, "ingenic,pwm-channels-mask", + (u32 *)&tcu->pwm_channels_mask); + + /* Verify that we have at least two free channels */ + if (hweight8(tcu->pwm_channels_mask) > soc_info->num_channels - 2) { + pr_crit("ingenic-tcu: Invalid PWM channel mask: 0x%02lx\n", + tcu->pwm_channels_mask); + return -EINVAL; + } + + tcu->soc_info = soc_info; + ingenic_tcu = tcu; + + tcu->timer_channel = find_first_zero_bit(&tcu->pwm_channels_mask, + soc_info->num_channels); + tcu->cs_channel = find_next_zero_bit(&tcu->pwm_channels_mask, + soc_info->num_channels, + tcu->timer_channel + 1); + + base = of_io_request_and_map(np, 0, NULL); + if (IS_ERR(base)) { + ret = PTR_ERR(base); + goto err_free_ingenic_tcu; + } + + of_address_to_resource(np, 0, &res); + + ingenic_tcu_base = base; + + tcu->map = regmap_init_mmio(NULL, base, &ingenic_tcu_regmap_config); + if (IS_ERR(tcu->map)) { + ret = PTR_ERR(tcu->map); + goto err_iounmap; + } + + tcu->clk = of_clk_get_by_name(np, "tcu"); + if (IS_ERR(tcu->clk)) { + ret = PTR_ERR(tcu->clk); + pr_crit("ingenic-tcu: Unable to find TCU clock: %i\n", ret); + goto err_free_regmap; + } + + ret = clk_prepare_enable(tcu->clk); + if (ret) { + pr_crit("ingenic-tcu: Unable to enable TCU clock: %i\n", ret); + goto err_clk_put; + } + + ret = ingenic_tcu_intc_init(tcu, np); + if (ret) + goto err_clk_disable; + + ret = ingenic_tcu_clk_init(tcu, np); + if (ret) + goto err_tcu_intc_cleanup; + + ret = ingenic_tcu_clocksource_init(tcu); + if (ret) + goto err_tcu_clk_cleanup; + + ret = ingenic_tcu_timer_init(tcu); + if (ret) + goto err_tcu_clocksource_cleanup; + + // Register the sched_clock at the very end as there's no way to undo it + rate = clk_get_rate(tcu->cs_clk); + sched_clock_register(ingenic_tcu_timer_read, 16, rate); + + return 0; + +err_tcu_clocksource_cleanup: + ingenic_tcu_clocksource_cleanup(tcu); +err_tcu_clk_cleanup: + ingenic_tcu_clk_cleanup(tcu, np); +err_tcu_intc_cleanup: + ingenic_tcu_intc_cleanup(tcu); +err_clk_disable: + clk_disable_unprepare(tcu->clk); +err_clk_put: + clk_put(tcu->clk); +err_free_regmap: + regmap_exit(tcu->map); +err_iounmap: + iounmap(base); + release_mem_region(res.start, resource_size(&res)); +err_free_ingenic_tcu: + kfree(tcu); + return ret; +} + +TIMER_OF_DECLARE(jz4740_tcu_intc, "ingenic,jz4740-tcu", ingenic_tcu_init); +TIMER_OF_DECLARE(jz4725b_tcu_intc, "ingenic,jz4725b-tcu", ingenic_tcu_init); +TIMER_OF_DECLARE(jz4770_tcu_intc, "ingenic,jz4770-tcu", ingenic_tcu_init); + + +static int __init ingenic_tcu_probe(struct platform_device *pdev) +{ + platform_set_drvdata(pdev, ingenic_tcu); + + regmap_attach_dev(&pdev->dev, ingenic_tcu->map, + &ingenic_tcu_regmap_config); + + return devm_of_platform_populate(&pdev->dev); +} + +#ifdef CONFIG_PM_SLEEP +static int ingenic_tcu_suspend(struct device *dev) +{ + struct ingenic_tcu *tcu = dev_get_drvdata(dev); + + clk_disable(tcu->cs_clk); + clk_disable(tcu->timer_clk); + clk_disable(tcu->clk); + return 0; +} + +static int ingenic_tcu_resume(struct device *dev) +{ + struct ingenic_tcu *tcu = dev_get_drvdata(dev); + int ret; + + ret = clk_enable(tcu->clk); + if (ret) + return ret; + + ret = clk_enable(tcu->timer_clk); + if (ret) + goto err_tcu_clk_disable; + + ret = clk_enable(tcu->cs_clk); + if (ret) + goto err_tcu_timer_clk_disable; + + return 0; + +err_tcu_timer_clk_disable: + clk_disable(tcu->timer_clk); +err_tcu_clk_disable: + clk_disable(tcu->clk); + return ret; +} + +static const struct dev_pm_ops ingenic_tcu_pm_ops = { + /* _noirq: We want the TCU clock to be gated last / ungated first */ + .suspend_noirq = ingenic_tcu_suspend, + .resume_noirq = ingenic_tcu_resume, +}; +#define INGENIC_TCU_PM_OPS (&ingenic_tcu_pm_ops) + +#else +#define INGENIC_TCU_PM_OPS NULL +#endif /* CONFIG_PM_SUSPEND */ + +static struct platform_driver ingenic_tcu_driver = { + .driver = { + .name = "ingenic-tcu", + .pm = INGENIC_TCU_PM_OPS, + .of_match_table = ingenic_tcu_of_match, + }, +}; + +static int __init ingenic_tcu_platform_init(void) +{ + return platform_driver_probe(&ingenic_tcu_driver, + ingenic_tcu_probe); +} +subsys_initcall(ingenic_tcu_platform_init); + +bool ingenic_tcu_pwm_can_use_chn(unsigned int channel) +{ + return !!(ingenic_tcu->pwm_channels_mask & BIT(channel)); +} +EXPORT_SYMBOL_GPL(ingenic_tcu_pwm_can_use_chn); diff --git a/drivers/clocksource/ingenic-timer.h b/drivers/clocksource/ingenic-timer.h new file mode 100644 index 000000000000..fa43da836ab6 --- /dev/null +++ b/drivers/clocksource/ingenic-timer.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __DRIVERS_CLOCKSOURCE_INGENIC_TIMER_H__ +#define __DRIVERS_CLOCKSOURCE_INGENIC_TIMER_H__ + +#include + +/* + * README: For use *ONLY* by the ingenic-ost driver. + * Regular drivers which want to access the TCU registers + * must have ingenic-timer as parent and retrieve the regmap + * doing dev_get_regmap(pdev->dev.parent); + */ +extern void __iomem *ingenic_tcu_base; + +#endif /* __DRIVERS_CLOCKSOURCE_INGENIC_TIMER_H__ */ diff --git a/include/linux/mfd/ingenic-tcu.h b/include/linux/mfd/ingenic-tcu.h index 2083fa20821d..c10b36f3ad64 100644 --- a/include/linux/mfd/ingenic-tcu.h +++ b/include/linux/mfd/ingenic-tcu.h @@ -53,4 +53,6 @@ #define TCU_REG_TCNTc(c) (TCU_REG_TCNT0 + ((c) * TCU_CHANNEL_STRIDE)) #define TCU_REG_TCSRc(c) (TCU_REG_TCSR0 + ((c) * TCU_CHANNEL_STRIDE)) +bool ingenic_tcu_pwm_can_use_chn(unsigned int channel); + #endif /* __LINUX_MFD_INGENIC_TCU_H_ */ From patchwork Sat Mar 2 23:33:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836817 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F27CD1575 for ; Sat, 2 Mar 2019 23:35:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DD19E2A549 for ; Sat, 2 Mar 2019 23:35:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CDBB22A568; Sat, 2 Mar 2019 23:35:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EBD492A549 for ; Sat, 2 Mar 2019 23:35:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727330AbfCBXfC (ORCPT ); Sat, 2 Mar 2019 18:35:02 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33102 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726901AbfCBXfB (ORCPT ); Sat, 2 Mar 2019 18:35:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569698; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=JfH2RgWdofk/JcyRSDTPnt8A+o4n3vq1VW5Z474N+m0=; b=JadihX9OaBBqNw2r7gL7v57Jf1UzjAce0BiAhrF114k9NQbm945NbThpBtEcsb5gYHLj21 ZrfDN6lMEwZxPUqbkEw+O28Jiv9mzigOQ/BljYQ6kb2RLro3wX+YEETWHKk5GAPXN9EJyX pz48jElhLKXsc2fKtLQn4F+lAFwS/B8= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Maarten ter Huurne , Paul Cercueil Subject: [PATCH v10 05/27] clocksource: Add driver for the Ingenic JZ47xx OST Date: Sat, 2 Mar 2019 20:33:51 -0300 Message-Id: <20190302233413.14813-6-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Maarten ter Huurne OST is the OS Timer, a 64-bit timer/counter with buffered reading. SoCs before the JZ4770 had (if any) a 32-bit OST; the JZ4770 and JZ4780 have a 64-bit OST. This driver will register both a clocksource and a sched_clock to the system. Signed-off-by: Maarten ter Huurne Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: - Get rid of SoC IDs; pass pointer to ingenic_ost_soc_info as devicetree match data instead. - Use device_get_match_data() instead of the of_* variant - Handle error of dev_get_regmap() properly v7: Fix section mismatch by using builtin_platform_driver_probe() v8: builtin_platform_driver_probe() does not work anymore in 4.20-rc6? The probe function won't be called. Work around this for now by using late_initcall. v9: No change v10: Fix TCU_OST_TCSR_MASK only covering 8 bits instead of the 16 bits of the register. This fixes hangs on JZ4770 and JZ4780. drivers/clocksource/Kconfig | 8 ++ drivers/clocksource/Makefile | 1 + drivers/clocksource/ingenic-ost.c | 212 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 221 insertions(+) create mode 100644 drivers/clocksource/ingenic-ost.c diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index d841934e126c..9793db79798b 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -644,4 +644,12 @@ config INGENIC_TIMER help Support for the timer/counter unit of the Ingenic JZ SoCs. +config INGENIC_OST + bool "Ingenic JZ47xx Operating System Timer" + depends on MIPS || COMPILE_TEST + depends on COMMON_CLK + select INGENIC_TIMER + help + Support for the OS Timer of the Ingenic JZ4770 or similar SoC. + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 3eb8c544917f..7240a35413c0 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_ASM9260_TIMER) += asm9260_timer.o obj-$(CONFIG_H8300_TMR8) += h8300_timer8.o obj-$(CONFIG_H8300_TMR16) += h8300_timer16.o obj-$(CONFIG_H8300_TPU) += h8300_tpu.o +obj-$(CONFIG_INGENIC_OST) += ingenic-ost.o obj-$(CONFIG_INGENIC_TIMER) += ingenic-timer.o obj-$(CONFIG_CLKSRC_ST_LPC) += clksrc_st_lpc.o obj-$(CONFIG_X86_NUMACHIP) += numachip.o diff --git a/drivers/clocksource/ingenic-ost.c b/drivers/clocksource/ingenic-ost.c new file mode 100644 index 000000000000..0f64d939168a --- /dev/null +++ b/drivers/clocksource/ingenic-ost.c @@ -0,0 +1,212 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * JZ47xx SoCs TCU Operating System Timer driver + * + * Copyright (C) 2016 Maarten ter Huurne + * Copyright (C) 2018 Paul Cercueil + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ingenic-timer.h" + +#define TCU_OST_TCSR_MASK 0xffc0 +#define TCU_OST_TCSR_CNT_MD BIT(15) + +#define TCU_OST_CHANNEL 15 + +struct ingenic_ost_soc_info { + bool is64bit; +}; + +struct ingenic_ost { + struct regmap *map; + struct clk *clk; + + struct clocksource cs; +}; + +static u64 notrace ingenic_ost_read_cntl(void) +{ + /* Bypass the regmap here as we must return as soon as possible */ + return readl(ingenic_tcu_base + TCU_REG_OST_CNTL); +} + +static u64 notrace ingenic_ost_read_cnth(void) +{ + /* Bypass the regmap here as we must return as soon as possible */ + return readl(ingenic_tcu_base + TCU_REG_OST_CNTH); +} + +static u64 notrace ingenic_ost_clocksource_read64(struct clocksource *cs) +{ + u32 val1, val2; + u64 count, recount; + s64 diff; + + /* + * The buffering of the upper 32 bits of the timer prevents wrong + * results from the bottom 32 bits overflowing due to the timer ticking + * along. However, it does not prevent wrong results from simultaneous + * reads of the timer, which could reset the buffer mid-read. + * Since this kind of wrong read can happen only when the bottom bits + * overflow, there will be minutes between wrong reads, so if we read + * twice in succession, at least one of the reads will be correct. + */ + + /* Bypass the regmap here as we must return as soon as possible */ + val1 = readl(ingenic_tcu_base + TCU_REG_OST_CNTL); + val2 = readl(ingenic_tcu_base + TCU_REG_OST_CNTHBUF); + count = (u64)val1 | (u64)val2 << 32; + + val1 = readl(ingenic_tcu_base + TCU_REG_OST_CNTL); + val2 = readl(ingenic_tcu_base + TCU_REG_OST_CNTHBUF); + recount = (u64)val1 | (u64)val2 << 32; + + /* + * A wrong read will produce a result that is 1<<32 too high: the bottom + * part from before overflow and the upper part from after overflow. + * Therefore, the lower value of the two reads is the correct value. + */ + + diff = (s64)(recount - count); + if (unlikely(diff < 0)) + count = recount; + + return count; +} + +static u64 notrace ingenic_ost_clocksource_read32(struct clocksource *cs) +{ + return ingenic_ost_read_cnth(); +} + +static int __init ingenic_ost_probe(struct platform_device *pdev) +{ + const struct ingenic_ost_soc_info *soc_info; + struct device *dev = &pdev->dev; + struct ingenic_ost *ost; + struct clocksource *cs; + unsigned long rate, flags; + int err; + + soc_info = device_get_match_data(dev); + if (!soc_info) + return -EINVAL; + + ost = devm_kzalloc(dev, sizeof(*ost), GFP_KERNEL); + if (!ost) + return -ENOMEM; + + ost->map = dev_get_regmap(dev->parent, NULL); + if (!ost->map) { + dev_err(dev, "regmap not found\n"); + return -EINVAL; + } + + ost->clk = devm_clk_get(dev, "ost"); + if (IS_ERR(ost->clk)) + return PTR_ERR(ost->clk); + + err = clk_prepare_enable(ost->clk); + if (err) + return err; + + /* Clear counter high/low registers */ + if (soc_info->is64bit) + regmap_write(ost->map, TCU_REG_OST_CNTL, 0); + regmap_write(ost->map, TCU_REG_OST_CNTH, 0); + + /* Don't reset counter at compare value. */ + regmap_update_bits(ost->map, TCU_REG_OST_TCSR, + TCU_OST_TCSR_MASK, TCU_OST_TCSR_CNT_MD); + + rate = clk_get_rate(ost->clk); + + /* Enable OST TCU channel */ + regmap_write(ost->map, TCU_REG_TESR, BIT(TCU_OST_CHANNEL)); + + cs = &ost->cs; + cs->name = "ingenic-ost"; + cs->rating = 320; + cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; + + if (soc_info->is64bit) { + cs->mask = CLOCKSOURCE_MASK(64); + cs->read = ingenic_ost_clocksource_read64; + } else { + cs->mask = CLOCKSOURCE_MASK(32); + cs->read = ingenic_ost_clocksource_read32; + } + + err = clocksource_register_hz(cs, rate); + if (err) { + dev_err(dev, "clocksource registration failed: %d\n", err); + clk_disable_unprepare(ost->clk); + return err; + } + + /* Cannot register a sched_clock with interrupts on */ + local_irq_save(flags); + if (soc_info->is64bit) + sched_clock_register(ingenic_ost_read_cntl, 32, rate); + else + sched_clock_register(ingenic_ost_read_cnth, 32, rate); + local_irq_restore(flags); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int ingenic_ost_suspend(struct device *dev) +{ + struct ingenic_ost *ost = dev_get_drvdata(dev); + + clk_disable(ost->clk); + + return 0; +} + +static int ingenic_ost_resume(struct device *dev) +{ + struct ingenic_ost *ost = dev_get_drvdata(dev); + + return clk_enable(ost->clk); +} + +static SIMPLE_DEV_PM_OPS(ingenic_ost_pm_ops, ingenic_ost_suspend, + ingenic_ost_resume); +#define INGENIC_OST_PM_OPS (&ingenic_ost_pm_ops) +#else +#define INGENIC_OST_PM_OPS NULL +#endif /* CONFIG_PM_SUSPEND */ + +static const struct ingenic_ost_soc_info jz4725b_ost_soc_info = { + .is64bit = false, +}; + +static const struct ingenic_ost_soc_info jz4770_ost_soc_info = { + .is64bit = true, +}; + +static const struct of_device_id ingenic_ost_of_match[] = { + { .compatible = "ingenic,jz4725b-ost", .data = &jz4725b_ost_soc_info, }, + { .compatible = "ingenic,jz4770-ost", .data = &jz4770_ost_soc_info, }, + { } +}; + +static struct platform_driver ingenic_ost_driver = { + .driver = { + .name = "ingenic-ost", + .pm = INGENIC_OST_PM_OPS, + .of_match_table = ingenic_ost_of_match, + }, +}; +builtin_platform_driver_probe(ingenic_ost_driver, ingenic_ost_probe); From patchwork Sat Mar 2 23:33:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D28721575 for ; Sat, 2 Mar 2019 23:35:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C06AE2A549 for ; Sat, 2 Mar 2019 23:35:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B41942A560; Sat, 2 Mar 2019 23:35:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 555282A549 for ; Sat, 2 Mar 2019 23:35:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727385AbfCBXfI (ORCPT ); Sat, 2 Mar 2019 18:35:08 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33248 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727355AbfCBXfH (ORCPT ); Sat, 2 Mar 2019 18:35:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569704; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=FLf1PPEGL4Q6G2B75DGJJOm4/PpnKZH0MDIaX2F5ALI=; b=EyCKpZU4Qm/mmt7BexX2aBEpOrJGJyUv+FKpq0s8IYv18CiLIeztbKMwIMyI+8DDuZ9dFV GF+/sszUO2rxLQheRE8y1l1+KcEEkFWlVsXW9KhNhkjMuKTs14Lnee3f5/qh6q3XekjASJ Zj4Ie+ZIpGoG5NdipClztVGGIPjYt8o= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 06/27] MAINTAINERS: Add myself as maintainer for Ingenic TCU drivers Date: Sat, 2 Mar 2019 20:33:52 -0300 Message-Id: <20190302233413.14813-7-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add myself as maintainer for the ingenic-timer and ingenic-ost drivers. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v2: No change v3: No change v4: No change v5: Update with new files v6: No change v7: No change v8: No change v9: No change v10: No change MAINTAINERS | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index dce5c099f43c..3347efa545f1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7515,6 +7515,15 @@ L: linux-mtd@lists.infradead.org S: Maintained F: drivers/mtd/nand/raw/jz4780_* +INGENIC TCU driver +M: Paul Cercueil +S: Maintained +F: drivers/clocksource/ingenic-ost.c +F: drivers/clocksource/ingenic-timer.c +F: drivers/clocksource/ingenic-timer.h +F: include/linux/mfd/ingenic-tcu.h +F: include/dt-bindings/clock/ingenic,tcu.h + INOTIFY M: Jan Kara R: Amir Goldstein From patchwork Sat Mar 2 23:33:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836849 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9777A1575 for ; Sat, 2 Mar 2019 23:35:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 874272A57F for ; Sat, 2 Mar 2019 23:35:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7B97D2A586; Sat, 2 Mar 2019 23:35:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D67662A57F for ; Sat, 2 Mar 2019 23:35:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727429AbfCBXfQ (ORCPT ); Sat, 2 Mar 2019 18:35:16 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33358 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727414AbfCBXfP (ORCPT ); Sat, 2 Mar 2019 18:35:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569710; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=mbPKz1kwN2+9u87BM9oMtVq7h+K8qH6tddKeWHQRCwY=; b=ovrya8QFLuSQAq4YPZvh7pCnB6Wwl3ePZ4K1PusREAPzc9BHEkRv/aC5ddtFdemfA3xViu kl4gW8SF+/9fYOc5v2bQG3IJYpefupHWGWtEG0QhozTuGDCodYCsa21MD0ewogmCNIISNL zx5nntisnDobMtaC9Cg4t94ErTr4rP0= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 07/27] watchdog: jz4740: Use WDT clock provided by TCU driver Date: Sat, 2 Mar 2019 20:33:53 -0300 Message-Id: <20190302233413.14813-8-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Instead of requesting the "ext" clock and handling the watchdog clock divider and gating in the watchdog driver, we now request and use the "wdt" clock that is supplied by the ingenic-timer "TCU" driver. The major benefit is that the watchdog's clock rate and parent can now be specified from within devicetree, instead of hardcoded in the driver. Also, this driver won't poke anymore into the TCU registers to enable/disable the clock, as this is now handled by the TCU driver. On the bad side, we break the ABI with devicetree - as we now request a different clock. In this very specific case it is still okay, as every Ingenic JZ47xx-based board out there compile the devicetree within the kernel; so it's still time to push breaking changes, in order to get a clean devicetree that won't break once it musn't. Signed-off-by: Paul Cercueil Reviewed-by: Guenter Roeck Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: - Split regmap change to new patch 09/24 - The code now sets the WDT clock to the smallest rate possible and calculates the maximum timeout from that v7: No change v8: No change v9: No change v10: No change drivers/watchdog/Kconfig | 2 + drivers/watchdog/jz4740_wdt.c | 86 +++++++++++++++++-------------------------- 2 files changed, 36 insertions(+), 52 deletions(-) diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 57f017d74a97..a2a065eefb59 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1517,7 +1517,9 @@ config INDYDOG config JZ4740_WDT tristate "Ingenic jz4740 SoC hardware watchdog" depends on MACH_JZ4740 || MACH_JZ4780 + depends on COMMON_CLK select WATCHDOG_CORE + select INGENIC_TIMER help Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c index ec4d99a830ba..1d504ecf45e1 100644 --- a/drivers/watchdog/jz4740_wdt.c +++ b/drivers/watchdog/jz4740_wdt.c @@ -26,25 +26,9 @@ #include #include -#include - #define JZ_REG_WDT_TIMER_DATA 0x0 #define JZ_REG_WDT_COUNTER_ENABLE 0x4 #define JZ_REG_WDT_TIMER_COUNTER 0x8 -#define JZ_REG_WDT_TIMER_CONTROL 0xC - -#define JZ_WDT_CLOCK_PCLK 0x1 -#define JZ_WDT_CLOCK_RTC 0x2 -#define JZ_WDT_CLOCK_EXT 0x4 - -#define JZ_WDT_CLOCK_DIV_SHIFT 3 - -#define JZ_WDT_CLOCK_DIV_1 (0 << JZ_WDT_CLOCK_DIV_SHIFT) -#define JZ_WDT_CLOCK_DIV_4 (1 << JZ_WDT_CLOCK_DIV_SHIFT) -#define JZ_WDT_CLOCK_DIV_16 (2 << JZ_WDT_CLOCK_DIV_SHIFT) -#define JZ_WDT_CLOCK_DIV_64 (3 << JZ_WDT_CLOCK_DIV_SHIFT) -#define JZ_WDT_CLOCK_DIV_256 (4 << JZ_WDT_CLOCK_DIV_SHIFT) -#define JZ_WDT_CLOCK_DIV_1024 (5 << JZ_WDT_CLOCK_DIV_SHIFT) #define DEFAULT_HEARTBEAT 5 #define MAX_HEARTBEAT 2048 @@ -65,7 +49,8 @@ MODULE_PARM_DESC(heartbeat, struct jz4740_wdt_drvdata { struct watchdog_device wdt; void __iomem *base; - struct clk *rtc_clk; + struct clk *clk; + unsigned long clk_rate; }; static int jz4740_wdt_ping(struct watchdog_device *wdt_dev) @@ -80,31 +65,12 @@ static int jz4740_wdt_set_timeout(struct watchdog_device *wdt_dev, unsigned int new_timeout) { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); - unsigned int rtc_clk_rate; - unsigned int timeout_value; - unsigned short clock_div = JZ_WDT_CLOCK_DIV_1; - - rtc_clk_rate = clk_get_rate(drvdata->rtc_clk); - - timeout_value = rtc_clk_rate * new_timeout; - while (timeout_value > 0xffff) { - if (clock_div == JZ_WDT_CLOCK_DIV_1024) { - /* Requested timeout too high; - * use highest possible value. */ - timeout_value = 0xffff; - break; - } - timeout_value >>= 2; - clock_div += (1 << JZ_WDT_CLOCK_DIV_SHIFT); - } + u16 timeout_value = (u16)(drvdata->clk_rate * new_timeout); writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); - writew(clock_div, drvdata->base + JZ_REG_WDT_TIMER_CONTROL); writew((u16)timeout_value, drvdata->base + JZ_REG_WDT_TIMER_DATA); writew(0x0, drvdata->base + JZ_REG_WDT_TIMER_COUNTER); - writew(clock_div | JZ_WDT_CLOCK_RTC, - drvdata->base + JZ_REG_WDT_TIMER_CONTROL); writeb(0x1, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); @@ -114,7 +80,13 @@ static int jz4740_wdt_set_timeout(struct watchdog_device *wdt_dev, static int jz4740_wdt_start(struct watchdog_device *wdt_dev) { - jz4740_timer_enable_watchdog(); + struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); + int ret; + + ret = clk_prepare_enable(drvdata->clk); + if (ret) + return ret; + jz4740_wdt_set_timeout(wdt_dev, wdt_dev->timeout); return 0; @@ -125,7 +97,7 @@ static int jz4740_wdt_stop(struct watchdog_device *wdt_dev) struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); - jz4740_timer_disable_watchdog(); + clk_disable_unprepare(drvdata->clk); return 0; } @@ -163,26 +135,42 @@ MODULE_DEVICE_TABLE(of, jz4740_wdt_of_matches); static int jz4740_wdt_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct jz4740_wdt_drvdata *drvdata; struct watchdog_device *jz4740_wdt; struct resource *res; + long rate; int ret; - drvdata = devm_kzalloc(&pdev->dev, sizeof(struct jz4740_wdt_drvdata), - GFP_KERNEL); + drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL); if (!drvdata) return -ENOMEM; - if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT) - heartbeat = DEFAULT_HEARTBEAT; + drvdata->clk = devm_clk_get(&pdev->dev, "wdt"); + if (IS_ERR(drvdata->clk)) { + dev_err(&pdev->dev, "cannot find WDT clock\n"); + return PTR_ERR(drvdata->clk); + } + + /* Set smallest clock possible */ + rate = clk_round_rate(drvdata->clk, 1); + if (rate < 0) + return rate; + ret = clk_set_rate(drvdata->clk, rate); + if (ret) + return ret; + + drvdata->clk_rate = rate; jz4740_wdt = &drvdata->wdt; jz4740_wdt->info = &jz4740_wdt_info; jz4740_wdt->ops = &jz4740_wdt_ops; - jz4740_wdt->timeout = heartbeat; jz4740_wdt->min_timeout = 1; - jz4740_wdt->max_timeout = MAX_HEARTBEAT; - jz4740_wdt->parent = &pdev->dev; + jz4740_wdt->max_timeout = 0xffff / rate; + jz4740_wdt->timeout = clamp(heartbeat, + jz4740_wdt->min_timeout, + jz4740_wdt->max_timeout); + jz4740_wdt->parent = dev; watchdog_set_nowayout(jz4740_wdt, nowayout); watchdog_set_drvdata(jz4740_wdt, drvdata); @@ -191,12 +179,6 @@ static int jz4740_wdt_probe(struct platform_device *pdev) if (IS_ERR(drvdata->base)) return PTR_ERR(drvdata->base); - drvdata->rtc_clk = devm_clk_get(&pdev->dev, "rtc"); - if (IS_ERR(drvdata->rtc_clk)) { - dev_err(&pdev->dev, "cannot find RTC clock\n"); - return PTR_ERR(drvdata->rtc_clk); - } - ret = devm_watchdog_register_device(&pdev->dev, &drvdata->wdt); if (ret < 0) return ret; From patchwork Sat Mar 2 23:33:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836839 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7F73D1390 for ; Sat, 2 Mar 2019 23:35:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 705572A549 for ; Sat, 2 Mar 2019 23:35:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 649DE2A560; Sat, 2 Mar 2019 23:35:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EDAC72A55F for ; Sat, 2 Mar 2019 23:35:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727511AbfCBXfV (ORCPT ); Sat, 2 Mar 2019 18:35:21 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33454 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727414AbfCBXfU (ORCPT ); Sat, 2 Mar 2019 18:35:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569717; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=L8eAGrKcvzmq9BbRvAM5RS/BJTlMWR8pNaCYYFVai4A=; b=vMoUXJ5nW21sAH/pcflG6GO03gagP2II459q85aYyCyuPINpoTyGxPKE6mBH9QeZumJTGN 7G6ky0rXCzvcfVdt5ZMmySn75gg+X0olIInwjHyfkmrgar+zNd9UQGIw/mRXdmqAXcE1AM WXXahinSW7bO16c+VpHFAgidGCP+BlM= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 08/27] watchdog: jz4740: Use regmap provided by TCU driver Date: Sat, 2 Mar 2019 20:33:54 -0300 Message-Id: <20190302233413.14813-9-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since we broke the ABI by changing the clock, the driver was also updated to use the regmap provided by the TCU driver. Signed-off-by: Paul Cercueil Reviewed-by: Guenter Roeck Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v6: New patch v7: No change v8: No change v9: No change v10: No change drivers/watchdog/jz4740_wdt.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c index 1d504ecf45e1..0f54306aee25 100644 --- a/drivers/watchdog/jz4740_wdt.c +++ b/drivers/watchdog/jz4740_wdt.c @@ -13,6 +13,7 @@ * */ +#include #include #include #include @@ -25,10 +26,7 @@ #include #include #include - -#define JZ_REG_WDT_TIMER_DATA 0x0 -#define JZ_REG_WDT_COUNTER_ENABLE 0x4 -#define JZ_REG_WDT_TIMER_COUNTER 0x8 +#include #define DEFAULT_HEARTBEAT 5 #define MAX_HEARTBEAT 2048 @@ -48,7 +46,7 @@ MODULE_PARM_DESC(heartbeat, struct jz4740_wdt_drvdata { struct watchdog_device wdt; - void __iomem *base; + struct regmap *map; struct clk *clk; unsigned long clk_rate; }; @@ -57,7 +55,7 @@ static int jz4740_wdt_ping(struct watchdog_device *wdt_dev) { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); - writew(0x0, drvdata->base + JZ_REG_WDT_TIMER_COUNTER); + regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); return 0; } @@ -67,12 +65,12 @@ static int jz4740_wdt_set_timeout(struct watchdog_device *wdt_dev, struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); u16 timeout_value = (u16)(drvdata->clk_rate * new_timeout); - writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); - writew((u16)timeout_value, drvdata->base + JZ_REG_WDT_TIMER_DATA); - writew(0x0, drvdata->base + JZ_REG_WDT_TIMER_COUNTER); + regmap_write(drvdata->map, TCU_REG_WDT_TDR, timeout_value); + regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); - writeb(0x1, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, TCU_WDT_TCER_TCEN); wdt_dev->timeout = new_timeout; return 0; @@ -96,7 +94,7 @@ static int jz4740_wdt_stop(struct watchdog_device *wdt_dev) { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); - writeb(0x0, drvdata->base + JZ_REG_WDT_COUNTER_ENABLE); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); clk_disable_unprepare(drvdata->clk); return 0; @@ -138,7 +136,6 @@ static int jz4740_wdt_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct jz4740_wdt_drvdata *drvdata; struct watchdog_device *jz4740_wdt; - struct resource *res; long rate; int ret; @@ -174,10 +171,11 @@ static int jz4740_wdt_probe(struct platform_device *pdev) watchdog_set_nowayout(jz4740_wdt, nowayout); watchdog_set_drvdata(jz4740_wdt, drvdata); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - drvdata->base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(drvdata->base)) - return PTR_ERR(drvdata->base); + drvdata->map = dev_get_regmap(dev->parent, NULL); + if (!drvdata->map) { + dev_err(dev, "regmap not found\n"); + return -EINVAL; + } ret = devm_watchdog_register_device(&pdev->dev, &drvdata->wdt); if (ret < 0) From patchwork Sat Mar 2 23:33:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836843 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C8F531575 for ; Sat, 2 Mar 2019 23:35:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B7BA42A57F for ; Sat, 2 Mar 2019 23:35:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AC2AF2A588; Sat, 2 Mar 2019 23:35:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 54CA62A57F for ; Sat, 2 Mar 2019 23:35:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727550AbfCBXf1 (ORCPT ); Sat, 2 Mar 2019 18:35:27 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33726 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726989AbfCBXf0 (ORCPT ); Sat, 2 Mar 2019 18:35:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569724; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=i5qiWk8yuqyNLNPBRiLYJMaTuSbeQj/J4Aq22Whn8Sg=; b=Z5bJg4XfGfnKIYJBK4ZSpmElbLwlcrycJE5Zpqlcds7QwQ3UubB52vOXgfk32H1uo3NZf1 TCguKzKj1MJpnWCQBFNcNHBy5EfBZ9fDwGjyrMZww679JTJ6AGeQYwQ1SkdfWYPcGhv0lP amd1kPiOW0bMbd5aPMlVW4xtV07Y5QU= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 09/27] watchdog: jz4740: Avoid starting watchdog in set_timeout Date: Sat, 2 Mar 2019 20:33:55 -0300 Message-Id: <20190302233413.14813-10-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Previously the jz4740_wdt_set_timeout() function was starting the timer unconditionally, even if it was stopped when that function was entered. Now, the timer will be restarted only if it was already running before this function is called. Signed-off-by: Paul Cercueil Reviewed-by: Guenter Roeck Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v6: New patch v7: No change v8: No change v9: No change v10: No change drivers/watchdog/jz4740_wdt.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c index 0f54306aee25..45d9495170e5 100644 --- a/drivers/watchdog/jz4740_wdt.c +++ b/drivers/watchdog/jz4740_wdt.c @@ -64,13 +64,15 @@ static int jz4740_wdt_set_timeout(struct watchdog_device *wdt_dev, { struct jz4740_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev); u16 timeout_value = (u16)(drvdata->clk_rate * new_timeout); + u32 tcer; + regmap_read(drvdata->map, TCU_REG_WDT_TCER, &tcer); regmap_write(drvdata->map, TCU_REG_WDT_TCER, 0); regmap_write(drvdata->map, TCU_REG_WDT_TDR, timeout_value); regmap_write(drvdata->map, TCU_REG_WDT_TCNT, 0); - regmap_write(drvdata->map, TCU_REG_WDT_TCER, TCU_WDT_TCER_TCEN); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, tcer & TCU_WDT_TCER_TCEN); wdt_dev->timeout = new_timeout; return 0; @@ -86,6 +88,7 @@ static int jz4740_wdt_start(struct watchdog_device *wdt_dev) return ret; jz4740_wdt_set_timeout(wdt_dev, wdt_dev->timeout); + regmap_write(drvdata->map, TCU_REG_WDT_TCER, TCU_WDT_TCER_TCEN); return 0; } From patchwork Sat Mar 2 23:33:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836853 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BC8D31390 for ; Sat, 2 Mar 2019 23:35:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A9DF82A582 for ; Sat, 2 Mar 2019 23:35:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9E6162A59E; Sat, 2 Mar 2019 23:35:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E1DA2A582 for ; Sat, 2 Mar 2019 23:35:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727584AbfCBXfe (ORCPT ); Sat, 2 Mar 2019 18:35:34 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:33962 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727583AbfCBXfd (ORCPT ); Sat, 2 Mar 2019 18:35:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569730; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=y0dGMedDEsfgm40X2C3rAzy0VrII4Zc/Pw+o4pyNwQc=; b=elJqcxN31QBtj5OM5jwXxrlve7EJOaNLi7C2jjMFIFQhqFXTS59Z3e2KHChzvBJiyJl7Cl K7sBBn+LR+E9NSKSxIVBu6Vb6AKr4LsiX2xGnE58hDypBgLG3Xb7IkRHud27wdBs6+XvBg mLbojT5IWmogU1WQtjHJIPwAvPSKytM= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 10/27] watchdog: jz4740: Drop dependency on MACH_JZ47xx, use COMPILE_TEST Date: Sat, 2 Mar 2019 20:33:56 -0300 Message-Id: <20190302233413.14813-11-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Depending on MACH_JZ47xx prevent us from creating a generic kernel that works on more than one MIPS board. Instead, we just depend on MIPS being set. On other architectures, this driver can still be built, thanks to COMPILE_TEST. This is used by automated tools to find bugs, for instance. Signed-off-by: Paul Cercueil Reviewed-by: Guenter Roeck Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change drivers/watchdog/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index a2a065eefb59..061885fd94ad 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1516,7 +1516,7 @@ config INDYDOG config JZ4740_WDT tristate "Ingenic jz4740 SoC hardware watchdog" - depends on MACH_JZ4740 || MACH_JZ4780 + depends on MIPS || COMPILE_TEST depends on COMMON_CLK select WATCHDOG_CORE select INGENIC_TIMER From patchwork Sat Mar 2 23:33:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836861 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 264E41390 for ; Sat, 2 Mar 2019 23:35:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 158052A57F for ; Sat, 2 Mar 2019 23:35:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 09F862A582; Sat, 2 Mar 2019 23:35:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E5DF2A586 for ; Sat, 2 Mar 2019 23:35:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727620AbfCBXfl (ORCPT ); Sat, 2 Mar 2019 18:35:41 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34140 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727041AbfCBXfk (ORCPT ); Sat, 2 Mar 2019 18:35:40 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569736; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=W+hmXmP585S1nzT6IetTr2+t4P9iz+DdBCuoYaA215I=; b=qK4bf/ojgKXkrnThclFxq4C+71WJP9o+z5Xf9csqXByQ+pOXAkX14nFzWkeFOqyAM9ASzU rsomiFjZLSwG7OMnmTvonUHkJYudYo6Q74HS+TyLBD4yAwthjrFr4juLVm+5V5l8yQtf/d 2Twb1lSTQvP9kplL1uD5bkVp0nSjCic= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 11/27] pwm: jz4740: Apply configuration atomically Date: Sat, 2 Mar 2019 20:33:57 -0300 Message-Id: <20190302233413.14813-12-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is cleaner, more future-proof, and incidentally it also fixes the PWM resetting its config when stopped/started several times. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek Acked-by: Thierry Reding --- Notes: v9: New patch v10: No change drivers/pwm/pwm-jz4740.c | 37 ++++++++++++------------------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index a7b134af5e04..b2f910413f81 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -83,17 +83,16 @@ static void jz4740_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) jz4740_timer_disable(pwm->hwpwm); } -static int jz4740_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, - int duty_ns, int period_ns) +static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, + struct pwm_state *state) { struct jz4740_pwm_chip *jz4740 = to_jz4740(pwm->chip); unsigned long long tmp; unsigned long period, duty; unsigned int prescaler = 0; uint16_t ctrl; - bool is_enabled; - tmp = (unsigned long long)clk_get_rate(jz4740->clk) * period_ns; + tmp = (unsigned long long)clk_get_rate(jz4740->clk) * state->period; do_div(tmp, 1000000000); period = tmp; @@ -105,16 +104,14 @@ static int jz4740_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, if (prescaler == 6) return -EINVAL; - tmp = (unsigned long long)period * duty_ns; - do_div(tmp, period_ns); + tmp = (unsigned long long)period * state->duty_cycle; + do_div(tmp, state->period); duty = period - tmp; if (duty >= period) duty = period - 1; - is_enabled = jz4740_timer_is_enabled(pwm->hwpwm); - if (is_enabled) - jz4740_pwm_disable(chip, pwm); + jz4740_pwm_disable(chip, pwm); jz4740_timer_set_count(pwm->hwpwm, 0); jz4740_timer_set_duty(pwm->hwpwm, duty); @@ -125,18 +122,7 @@ static int jz4740_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); - if (is_enabled) - jz4740_pwm_enable(chip, pwm); - - return 0; -} - -static int jz4740_pwm_set_polarity(struct pwm_chip *chip, - struct pwm_device *pwm, enum pwm_polarity polarity) -{ - uint32_t ctrl = jz4740_timer_get_ctrl(pwm->pwm); - - switch (polarity) { + switch (state->polarity) { case PWM_POLARITY_NORMAL: ctrl &= ~JZ_TIMER_CTRL_PWM_ACTIVE_LOW; break; @@ -146,16 +132,17 @@ static int jz4740_pwm_set_polarity(struct pwm_chip *chip, } jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); + + if (state->enabled) + jz4740_pwm_enable(chip, pwm); + return 0; } static const struct pwm_ops jz4740_pwm_ops = { .request = jz4740_pwm_request, .free = jz4740_pwm_free, - .config = jz4740_pwm_config, - .set_polarity = jz4740_pwm_set_polarity, - .enable = jz4740_pwm_enable, - .disable = jz4740_pwm_disable, + .apply = jz4740_pwm_apply, .owner = THIS_MODULE, }; From patchwork Sat Mar 2 23:33:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836865 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 60FAE1575 for ; Sat, 2 Mar 2019 23:35:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DEE02A57F for ; Sat, 2 Mar 2019 23:35:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 414132A586; Sat, 2 Mar 2019 23:35:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A42312A57F for ; Sat, 2 Mar 2019 23:35:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727668AbfCBXfs (ORCPT ); Sat, 2 Mar 2019 18:35:48 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34246 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727106AbfCBXfr (ORCPT ); Sat, 2 Mar 2019 18:35:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569744; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=eTsufXpYbPo06DfNcxK4ky10ucAYzwtmkeo8yx4/7Vo=; b=yUnD+X5kixo6Hkl6drKU4aYuIV8Z6ad3Go49v6vcuVFD+Ya7SF9uiXa3wYdt77rehm/KH6 AYJAxe5PCM5VooCvk3vXxmapLWrLIWILHI5GKfXPuHS2Bnw46c6ewCqoozpDZu+xb2cytc xNQqLNOQRmpVZO2CB6jO4AmAva3bE1I= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 12/27] pwm: jz4740: Use regmap from TCU driver Date: Sat, 2 Mar 2019 20:33:58 -0300 Message-Id: <20190302233413.14813-13-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The ingenic-timer "TCU" driver provides us with a regmap, that we can use to safely access the TCU registers. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v9: New patch v10: No change drivers/pwm/Kconfig | 1 + drivers/pwm/pwm-jz4740.c | 74 +++++++++++++++++++++++++++++++----------------- 2 files changed, 49 insertions(+), 26 deletions(-) diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index a8f47df0655a..ace8ea4b6247 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -204,6 +204,7 @@ config PWM_IMX config PWM_JZ4740 tristate "Ingenic JZ47xx PWM support" depends on MACH_INGENIC + select REGMAP help Generic PWM framework driver for Ingenic JZ47xx based machines. diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index b2f910413f81..8dfac5ffd71c 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -17,18 +17,19 @@ #include #include #include +#include #include #include #include #include - -#include +#include #define NUM_PWM 8 struct jz4740_pwm_chip { struct pwm_chip chip; struct clk *clk; + struct regmap *map; }; static inline struct jz4740_pwm_chip *to_jz4740(struct pwm_chip *chip) @@ -38,6 +39,8 @@ static inline struct jz4740_pwm_chip *to_jz4740(struct pwm_chip *chip) static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) { + struct jz4740_pwm_chip *jz = to_jz4740(chip); + /* * Timers 0 and 1 are used for system tasks, so they are unavailable * for use as PWMs. @@ -45,42 +48,44 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) if (pwm->hwpwm < 2) return -EBUSY; - jz4740_timer_start(pwm->hwpwm); + regmap_write(jz->map, TCU_REG_TSCR, BIT(pwm->hwpwm)); return 0; } static void jz4740_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm) { - jz4740_timer_set_ctrl(pwm->hwpwm, 0); + struct jz4740_pwm_chip *jz = to_jz4740(chip); - jz4740_timer_stop(pwm->hwpwm); + regmap_write(jz->map, TCU_REG_TSCR, BIT(pwm->hwpwm)); } static int jz4740_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) { - uint32_t ctrl = jz4740_timer_get_ctrl(pwm->pwm); + struct jz4740_pwm_chip *jz = to_jz4740(chip); - ctrl |= JZ_TIMER_CTRL_PWM_ENABLE; - jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); - jz4740_timer_enable(pwm->hwpwm); + /* Enable PWM output */ + regmap_update_bits(jz->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PWM_EN, TCU_TCSR_PWM_EN); + /* Start counter */ + regmap_write(jz->map, TCU_REG_TESR, BIT(pwm->hwpwm)); return 0; } static void jz4740_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) { - uint32_t ctrl = jz4740_timer_get_ctrl(pwm->hwpwm); + struct jz4740_pwm_chip *jz = to_jz4740(chip); /* Disable PWM output. * In TCU2 mode (channel 1/2 on JZ4750+), this must be done before the * counter is stopped, while in TCU1 mode the order does not matter. */ - ctrl &= ~JZ_TIMER_CTRL_PWM_ENABLE; - jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); + regmap_update_bits(jz->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PWM_EN, 0); /* Stop counter */ - jz4740_timer_disable(pwm->hwpwm); + regmap_write(jz->map, TCU_REG_TECR, BIT(pwm->hwpwm)); } static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, @@ -90,7 +95,6 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, unsigned long long tmp; unsigned long period, duty; unsigned int prescaler = 0; - uint16_t ctrl; tmp = (unsigned long long)clk_get_rate(jz4740->clk) * state->period; do_div(tmp, 1000000000); @@ -113,26 +117,37 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, jz4740_pwm_disable(chip, pwm); - jz4740_timer_set_count(pwm->hwpwm, 0); - jz4740_timer_set_duty(pwm->hwpwm, duty); - jz4740_timer_set_period(pwm->hwpwm, period); + /* Set abrupt shutdown */ + regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PWM_SD, TCU_TCSR_PWM_SD); + + /* Set clock prescale */ + regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PRESCALE_MASK, + prescaler << TCU_TCSR_PRESCALE_LSB); + + /* Reset counter to 0 */ + regmap_write(jz4740->map, TCU_REG_TCNTc(pwm->hwpwm), 0); - ctrl = JZ_TIMER_CTRL_PRESCALER(prescaler) | JZ_TIMER_CTRL_SRC_EXT | - JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN; + /* Set duty */ + regmap_write(jz4740->map, TCU_REG_TDHRc(pwm->hwpwm), duty); - jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); + /* Set period */ + regmap_write(jz4740->map, TCU_REG_TDFRc(pwm->hwpwm), period); + /* Set polarity */ switch (state->polarity) { case PWM_POLARITY_NORMAL: - ctrl &= ~JZ_TIMER_CTRL_PWM_ACTIVE_LOW; + regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PWM_INITL_HIGH, 0); break; case PWM_POLARITY_INVERSED: - ctrl |= JZ_TIMER_CTRL_PWM_ACTIVE_LOW; + regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), + TCU_TCSR_PWM_INITL_HIGH, + TCU_TCSR_PWM_INITL_HIGH); break; } - jz4740_timer_set_ctrl(pwm->hwpwm, ctrl); - if (state->enabled) jz4740_pwm_enable(chip, pwm); @@ -149,8 +164,9 @@ static const struct pwm_ops jz4740_pwm_ops = { static int jz4740_pwm_probe(struct platform_device *pdev) { struct jz4740_pwm_chip *jz4740; + struct device *dev = &pdev->dev; - jz4740 = devm_kzalloc(&pdev->dev, sizeof(*jz4740), GFP_KERNEL); + jz4740 = devm_kzalloc(dev, sizeof(*jz4740), GFP_KERNEL); if (!jz4740) return -ENOMEM; @@ -158,7 +174,13 @@ static int jz4740_pwm_probe(struct platform_device *pdev) if (IS_ERR(jz4740->clk)) return PTR_ERR(jz4740->clk); - jz4740->chip.dev = &pdev->dev; + jz4740->map = dev_get_regmap(dev->parent, NULL); + if (!jz4740->map) { + dev_err(dev, "regmap not found\n"); + return -EINVAL; + } + + jz4740->chip.dev = dev; jz4740->chip.ops = &jz4740_pwm_ops; jz4740->chip.npwm = NUM_PWM; jz4740->chip.base = -1; From patchwork Sat Mar 2 23:33:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836869 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2625217EF for ; Sat, 2 Mar 2019 23:35:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 12DC32A57F for ; Sat, 2 Mar 2019 23:35:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 06E802A597; Sat, 2 Mar 2019 23:35:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 885822A57F for ; Sat, 2 Mar 2019 23:35:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727694AbfCBXfy (ORCPT ); Sat, 2 Mar 2019 18:35:54 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34384 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXfx (ORCPT ); Sat, 2 Mar 2019 18:35:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569750; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=bNrt35JIP1EJ9SZv42mKntmeQEDItMZvplduG2u//DI=; b=Q5fikHtfmLQC1MYR791RIGQLBhzU9QmxumKX68sdcr92oUjqtRSLNi/4JWdYRw9PBzqhmk HExb7ZND3amhpISNvpq8CsYtMAPxEQHAxNKo9bcdonsuPhO/1gtXeUoqSBPJ0cv/6wajki Xr48UN2refz27JsXJGw5J34Vvo5laME= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 13/27] pwm: jz4740: Use clocks from TCU driver Date: Sat, 2 Mar 2019 20:33:59 -0300 Message-Id: <20190302233413.14813-14-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The ingenic-timer "TCU" driver provides us with clocks, that can be (un)gated, reparented or reclocked from devicetree, instead of having these settings hardcoded in this driver. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Note that the "select REGMAP" has been dropped because it's already enabled by the "select INGENIC_TIMER". Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v9: New patch v10: Explain in commit message why "select REGMAP" was dropped drivers/pwm/Kconfig | 3 ++- drivers/pwm/pwm-jz4740.c | 39 ++++++++++++++++++++++++++------------- 2 files changed, 28 insertions(+), 14 deletions(-) diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index ace8ea4b6247..4e201e970509 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -204,7 +204,8 @@ config PWM_IMX config PWM_JZ4740 tristate "Ingenic JZ47xx PWM support" depends on MACH_INGENIC - select REGMAP + depends on COMMON_CLK + select INGENIC_TIMER help Generic PWM framework driver for Ingenic JZ47xx based machines. diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index 8dfac5ffd71c..c6136bd4434b 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -28,7 +28,7 @@ struct jz4740_pwm_chip { struct pwm_chip chip; - struct clk *clk; + struct clk *clks[NUM_PWM]; struct regmap *map; }; @@ -40,6 +40,9 @@ static inline struct jz4740_pwm_chip *to_jz4740(struct pwm_chip *chip) static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) { struct jz4740_pwm_chip *jz = to_jz4740(chip); + struct clk *clk; + char clk_name[16]; + int ret; /* * Timers 0 and 1 are used for system tasks, so they are unavailable @@ -48,16 +51,29 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) if (pwm->hwpwm < 2) return -EBUSY; - regmap_write(jz->map, TCU_REG_TSCR, BIT(pwm->hwpwm)); + snprintf(clk_name, sizeof(clk_name), "timer%u", pwm->hwpwm); + clk = clk_get(chip->dev, clk_name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ret = clk_prepare_enable(clk); + if (ret) { + clk_put(clk); + return ret; + } + + jz->clks[pwm->hwpwm] = clk; return 0; } static void jz4740_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm) { struct jz4740_pwm_chip *jz = to_jz4740(chip); + struct clk *clk = jz->clks[pwm->hwpwm]; - regmap_write(jz->map, TCU_REG_TSCR, BIT(pwm->hwpwm)); + clk_disable_unprepare(clk); + clk_put(clk); } static int jz4740_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) @@ -92,16 +108,20 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, struct pwm_state *state) { struct jz4740_pwm_chip *jz4740 = to_jz4740(pwm->chip); + struct clk *clk = jz4740->clks[pwm->hwpwm], + *parent_clk = clk_get_parent(clk); + unsigned long rate, period, duty; unsigned long long tmp; - unsigned long period, duty; unsigned int prescaler = 0; - tmp = (unsigned long long)clk_get_rate(jz4740->clk) * state->period; + rate = clk_get_rate(parent_clk); + tmp = (unsigned long long)rate * state->period; do_div(tmp, 1000000000); period = tmp; while (period > 0xffff && prescaler < 6) { period >>= 2; + rate >>= 2; ++prescaler; } @@ -121,10 +141,7 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), TCU_TCSR_PWM_SD, TCU_TCSR_PWM_SD); - /* Set clock prescale */ - regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), - TCU_TCSR_PRESCALE_MASK, - prescaler << TCU_TCSR_PRESCALE_LSB); + clk_set_rate(clk, rate); /* Reset counter to 0 */ regmap_write(jz4740->map, TCU_REG_TCNTc(pwm->hwpwm), 0); @@ -170,10 +187,6 @@ static int jz4740_pwm_probe(struct platform_device *pdev) if (!jz4740) return -ENOMEM; - jz4740->clk = devm_clk_get(&pdev->dev, "ext"); - if (IS_ERR(jz4740->clk)) - return PTR_ERR(jz4740->clk); - jz4740->map = dev_get_regmap(dev->parent, NULL); if (!jz4740->map) { dev_err(dev, "regmap not found\n"); From patchwork Sat Mar 2 23:34:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836877 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 51AB317EF for ; Sat, 2 Mar 2019 23:36:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3F43C2A57F for ; Sat, 2 Mar 2019 23:36:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 338B42A588; Sat, 2 Mar 2019 23:36:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9097B2A586 for ; Sat, 2 Mar 2019 23:36:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727748AbfCBXgB (ORCPT ); Sat, 2 Mar 2019 18:36:01 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34528 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgB (ORCPT ); Sat, 2 Mar 2019 18:36:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569757; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=T5gM9fNr36oTxFv1YWXbA8rrY8lrYbbD1rX18qV1k78=; b=rnnAc4Z9csRKPiG4x9NkmzbqXZ5L7zsGSSmV8buOUWJTfsh4v22a9Qb2FW9u2XVSQLo2gy 5oZUSeZaM5jkJyT+3zV2Ietg55z4p/5axVVuAKs88B13u1oVHb6YhvpeUzCZWf7hheFZmj mia1rOU2tFj1TyheATgXR2XVJBA3hIs= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 14/27] pwm: jz4740: Improve algorithm of clock calculation Date: Sat, 2 Mar 2019 20:34:00 -0300 Message-Id: <20190302233413.14813-15-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The previous algorithm hardcoded details about how the TCU clocks work. The new algorithm will use clk_round_rate to find the perfect clock rate for the PWM channel. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v9: New patch v10: - New algorithm. Instead of starting with the maximum clock rate and using clk_round_rate(rate - 1) to get the next (smaller) clock, we compute the maximum rate we can use before the register overflows, and apply it with clk_set_max_rate. Then we read the new clock rate and compute the register values of the period and duty from that. - Use NSEC_PER_SEC instead of magic 1000000000 value drivers/pwm/pwm-jz4740.c | 49 ++++++++++++++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 16 deletions(-) diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index c6136bd4434b..f497388fc818 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -110,24 +110,45 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, struct jz4740_pwm_chip *jz4740 = to_jz4740(pwm->chip); struct clk *clk = jz4740->clks[pwm->hwpwm], *parent_clk = clk_get_parent(clk); - unsigned long rate, period, duty; + unsigned long rate, parent_rate, period, duty; unsigned long long tmp; - unsigned int prescaler = 0; + int ret; - rate = clk_get_rate(parent_clk); - tmp = (unsigned long long)rate * state->period; - do_div(tmp, 1000000000); - period = tmp; + parent_rate = clk_get_rate(parent_clk); + + jz4740_pwm_disable(chip, pwm); + + /* Reset the clock to the maximum rate, and we'll reduce it if needed */ + ret = clk_set_rate(clk, parent_rate); + if (ret) + return ret; - while (period > 0xffff && prescaler < 6) { - period >>= 2; - rate >>= 2; - ++prescaler; + /* Limit the clock to a maximum rate that still gives us a period value + * which fits in 16 bits. + */ + tmp = 0xffffull * NSEC_PER_SEC; + do_div(tmp, state->period); + + ret = clk_set_max_rate(clk, tmp); + if (ret) { + dev_err(chip->dev, "Unable to set max rate: %i\n", ret); + return ret; } - if (prescaler == 6) - return -EINVAL; + /* Read back the clock rate, as it may have been modified by + * clk_set_max_rate() + */ + rate = clk_get_rate(clk); + if (rate != parent_rate) + dev_dbg(chip->dev, "PWM clock updated to %lu Hz\n", rate); + + /* Calculate period value */ + tmp = (unsigned long long)rate * state->period; + do_div(tmp, NSEC_PER_SEC); + period = (unsigned long)tmp; + + /* Calculate duty value */ tmp = (unsigned long long)period * state->duty_cycle; do_div(tmp, state->period); duty = period - tmp; @@ -135,14 +156,10 @@ static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, if (duty >= period) duty = period - 1; - jz4740_pwm_disable(chip, pwm); - /* Set abrupt shutdown */ regmap_update_bits(jz4740->map, TCU_REG_TCSRc(pwm->hwpwm), TCU_TCSR_PWM_SD, TCU_TCSR_PWM_SD); - clk_set_rate(clk, rate); - /* Reset counter to 0 */ regmap_write(jz4740->map, TCU_REG_TCNTc(pwm->hwpwm), 0); From patchwork Sat Mar 2 23:34:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836881 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9CBBE1390 for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 882902A57F for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 79B8F2A586; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1AF3D2A57F for ; Sat, 2 Mar 2019 23:36:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727806AbfCBXgI (ORCPT ); Sat, 2 Mar 2019 18:36:08 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34612 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgG (ORCPT ); Sat, 2 Mar 2019 18:36:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569763; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=5u9wJOcsmHwHyJffBgLzKv9/tQWZhgJvE36/wVYRcIE=; b=dOqEFBKbX47G2Kp1yl5zIYoRv/AeRxdVeE7ZsZuVGvBlG0AbJtLGM6bloaVYjsimKxBjjq rOzEX/r1d2kZIC4DpFH4kqvZn9g6dNxGaBp2Q25k+J1gy2osCMi3c+bx8Lcdow74J0kKA6 H+u6GUQe+p63a+hwYztwWnOanF8/2fo= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 15/27] pwm: jz4740: Allow selection of PWM channels 0 and 1 Date: Sat, 2 Mar 2019 20:34:01 -0300 Message-Id: <20190302233413.14813-16-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The TCU channels 0 and 1 were previously reserved for system tasks, and thus unavailable for PWM. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v6: New patch v7: No change v8: ingenic_tcu_[request,release]_channel are dropped. We now use the memory resources provided to the driver to detect whether or not we are allowed to use the TCU channel. v9: Drop previous system. Call a API function provided by the clocksource driver to know if we can use the channel as PWM. v10: No change drivers/pwm/pwm-jz4740.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index f497388fc818..c914589d547b 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -44,11 +44,7 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) char clk_name[16]; int ret; - /* - * Timers 0 and 1 are used for system tasks, so they are unavailable - * for use as PWMs. - */ - if (pwm->hwpwm < 2) + if (!ingenic_tcu_pwm_can_use_chn(pwm->hwpwm)) return -EBUSY; snprintf(clk_name, sizeof(clk_name), "timer%u", pwm->hwpwm); From patchwork Sat Mar 2 23:34:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836883 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D8A671575 for ; Sat, 2 Mar 2019 23:36:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C645F2A57F for ; Sat, 2 Mar 2019 23:36:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BA9052A588; Sat, 2 Mar 2019 23:36:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6BC822A57F for ; Sat, 2 Mar 2019 23:36:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727841AbfCBXgN (ORCPT ); Sat, 2 Mar 2019 18:36:13 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:34704 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgM (ORCPT ); Sat, 2 Mar 2019 18:36:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569769; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=JxzTaPJ+1m042fGj0D2uCEKzGbpGlEuVoq++EpXOWzk=; b=IXR83I4BfcfKIkTCEaODuNaHgr5YmhV4OSWX1oCfboL4JedY+DxJLXzsnBA8Vb2mt/0R/k u4BibBdmOYruNm86s89v1nHs3lgs5JJABoX1lAgBY733H8sNUCMqrVXBk2xalZv7npETBk ShfVw3bPBgIQM1WVIDJwgrrwTUl5yyM= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 16/27] pwm: jz4740: Drop dependency on MACH_INGENIC, use COMPILE_TEST Date: Sat, 2 Mar 2019 20:34:02 -0300 Message-Id: <20190302233413.14813-17-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Depending on MACH_INGENIC prevent us from creating a generic kernel that works on more than one MIPS board. Instead, we just depend on MIPS being set. On other architectures, this driver can still be built, thanks to COMPILE_TEST. This is used by automated tools to find bugs, for instance. Signed-off-by: Paul Cercueil Acked-by: Thierry Reding Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change drivers/pwm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 4e201e970509..0c9b07cb77ff 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -203,7 +203,7 @@ config PWM_IMX config PWM_JZ4740 tristate "Ingenic JZ47xx PWM support" - depends on MACH_INGENIC + depends on MIPS || COMPILE_TEST depends on COMMON_CLK select INGENIC_TIMER help From patchwork Sat Mar 2 23:34:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836889 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4F07F1390 for ; Sat, 2 Mar 2019 23:36:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3BD0F2A57F for ; Sat, 2 Mar 2019 23:36:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2FE412A588; Sat, 2 Mar 2019 23:36:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CEE072A57F for ; Sat, 2 Mar 2019 23:36:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727896AbfCBXgT (ORCPT ); Sat, 2 Mar 2019 18:36:19 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35004 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgS (ORCPT ); Sat, 2 Mar 2019 18:36:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569775; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=Z5TpvnRnK8R/swFcxrnsjK2/6tvP93DyiTrxCZmU0EA=; b=IXUH+ixRm5hhXpgBv3WXJkiTGrfPwyVXyoQWIj+dBzqyLbK5LYjhtB9ElQGQVcMfGwok6j 0p3ra78+rFa0wc1185hIbr5ph2fuTppw6jCa3HTshBVE/e2EHiQgcTcEvD8ev+enH9mPzj i3EkwfCHvn5VpzHShsNpKfhM1FjuQRs= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 17/27] pwm: jz4740: Remove unused devicetree compatible strings Date: Sat, 2 Mar 2019 20:34:03 -0300 Message-Id: <20190302233413.14813-18-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Right now none of the Ingenic-based boards probe this driver from devicetree. This driver defined three compatible strings for the exact same behaviour. Before these strings are used, we can remove two of them. Signed-off-by: Paul Cercueil Acked-by: Thierry Reding Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change drivers/pwm/pwm-jz4740.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index c914589d547b..823d51c8e6fe 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -228,8 +228,6 @@ static int jz4740_pwm_remove(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id jz4740_pwm_dt_ids[] = { { .compatible = "ingenic,jz4740-pwm", }, - { .compatible = "ingenic,jz4770-pwm", }, - { .compatible = "ingenic,jz4780-pwm", }, {}, }; MODULE_DEVICE_TABLE(of, jz4740_pwm_dt_ids); From patchwork Sat Mar 2 23:34:04 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836893 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 733AD1575 for ; Sat, 2 Mar 2019 23:36:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 603292A57F for ; Sat, 2 Mar 2019 23:36:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 53A972A588; Sat, 2 Mar 2019 23:36:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EDE552A57F for ; Sat, 2 Mar 2019 23:36:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727933AbfCBXgZ (ORCPT ); Sat, 2 Mar 2019 18:36:25 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35236 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgY (ORCPT ); Sat, 2 Mar 2019 18:36:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569781; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=ceWiyac6eO6VdoR/z++C3FuR0pv/VI5vA70upsbZU2s=; b=ZczlnyGRXX837PfgoVEwl3SjDbXPJ+omA3MsCqlX6Po9PHU6iY9n10mcqruIm0nxwQAXLz 64y7GB/iPb+AgAXA/E9yepQt9/XBeajKh2cQ5CcdKhQb1gOgdAUueQFm89D5YrBG+Qz8p2 7cbMelBhtqo1TXyh3A3N0aDoHSBC4R0= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 18/27] clk: jz4740: Add TCU clock Date: Sat, 2 Mar 2019 20:34:04 -0300 Message-Id: <20190302233413.14813-19-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add the missing TCU clock to the list of clocks supplied by the CGU for the JZ4740 SoC. Signed-off-by: Paul Cercueil Acked-by: Stephen Boyd Acked-by: Rob Herring Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change drivers/clk/ingenic/jz4740-cgu.c | 6 ++++++ include/dt-bindings/clock/jz4740-cgu.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/clk/ingenic/jz4740-cgu.c b/drivers/clk/ingenic/jz4740-cgu.c index 4479c102e899..d8ac7f2e183a 100644 --- a/drivers/clk/ingenic/jz4740-cgu.c +++ b/drivers/clk/ingenic/jz4740-cgu.c @@ -211,6 +211,12 @@ static const struct ingenic_cgu_clk_info jz4740_cgu_clocks[] = { .parents = { JZ4740_CLK_EXT, -1, -1, -1 }, .gate = { CGU_REG_CLKGR, 5 }, }, + + [JZ4740_CLK_TCU] = { + "tcu", CGU_CLK_GATE, + .parents = { JZ4740_CLK_EXT, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR, 1 }, + }, }; static void __init jz4740_cgu_init(struct device_node *np) diff --git a/include/dt-bindings/clock/jz4740-cgu.h b/include/dt-bindings/clock/jz4740-cgu.h index 6ed83f926ae7..e82d77028581 100644 --- a/include/dt-bindings/clock/jz4740-cgu.h +++ b/include/dt-bindings/clock/jz4740-cgu.h @@ -34,5 +34,6 @@ #define JZ4740_CLK_ADC 19 #define JZ4740_CLK_I2C 20 #define JZ4740_CLK_AIC 21 +#define JZ4740_CLK_TCU 22 #endif /* __DT_BINDINGS_CLOCK_JZ4740_CGU_H__ */ From patchwork Sat Mar 2 23:34:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836897 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 221581390 for ; Sat, 2 Mar 2019 23:36:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1057A2A582 for ; Sat, 2 Mar 2019 23:36:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 04EA72A597; Sat, 2 Mar 2019 23:36:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB3592A582 for ; Sat, 2 Mar 2019 23:36:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727966AbfCBXgc (ORCPT ); Sat, 2 Mar 2019 18:36:32 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35398 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfCBXgb (ORCPT ); Sat, 2 Mar 2019 18:36:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569788; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=9saRiwPForVL/IuLR0EjvzRbRxXP/QeRDTaQu9/4LS0=; b=fuLe8AYbVsvvqCZvxW8jWCUAeaeOXkttsBf75Q72Dhp0zX9GM1FOKbTHZokg3li5GYvViZ 5/zMDloF9G8hmM3Phcsv6OyGwuG+UvYmbrs6H8pcbT2aBjmx3biiAj4bpfHNM9WT0isN4E eyRjlUzIxnR1gPOcFcdDb9DS7lQKYSY= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 19/27] MIPS: Kconfig: Select TCU timer driver when MACH_INGENIC is set Date: Sat, 2 Mar 2019 20:34:05 -0300 Message-Id: <20190302233413.14813-20-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We cannot boot to userspace (not even initramfs) if the timer driver is not present; so it makes sense to enable it unconditionally when MACH_INGENIC is set. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index a84c24d894aa..8e27d9983243 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -394,6 +394,7 @@ config MACH_INGENIC select BUILTIN_DTB select USE_OF select LIBFDT + select INGENIC_TIMER config LANTIQ bool "Lantiq based platforms" From patchwork Sat Mar 2 23:34:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836903 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3DAB717EF for ; Sat, 2 Mar 2019 23:36:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2E6752A582 for ; Sat, 2 Mar 2019 23:36:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 226872A593; Sat, 2 Mar 2019 23:36:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 76A522A586 for ; Sat, 2 Mar 2019 23:36:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728009AbfCBXgi (ORCPT ); Sat, 2 Mar 2019 18:36:38 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35484 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727249AbfCBXgh (ORCPT ); Sat, 2 Mar 2019 18:36:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569794; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=H+7Ak1Ej5G/ZDjD49LA+VYriL4Mo6sDGFqSst+iXhY0=; b=Oo5pcamBxAhllqhJvIYVE8YUkOi23A/bQIBDwsc2x/p1yl964WYawPtq66NZvdCgD4Z/6P FNnSgVtkrdjSrGk296xjQAzfP7qOwEBP7RvImHdy2W4DTfwbStmfG+jsKgq9pyQDq3rccC aUil3XKHEaKtiNCsqlvavpm/+aAee5g= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 20/27] MIPS: jz4740: Add DTS nodes for the TCU drivers Date: Sat, 2 Mar 2019 20:34:06 -0300 Message-Id: <20190302233413.14813-21-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add DTS nodes for the JZ4780, JZ4770 and JZ4740 devicetree files. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: Fix register lengths in watchdog/pwm nodes v7: No change v8: - Fix wrong start address for PWM node - Add system timer and clocksource sub-nodes v9: Drop timer and clocksource sub-nodes v10: No change arch/mips/boot/dts/ingenic/jz4740.dtsi | 51 +++++++++++++++++++++++--- arch/mips/boot/dts/ingenic/jz4770.dtsi | 59 ++++++++++++++++++++++++++++++ arch/mips/boot/dts/ingenic/jz4780.dtsi | 67 ++++++++++++++++++++++++++++++---- 3 files changed, 164 insertions(+), 13 deletions(-) diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi b/arch/mips/boot/dts/ingenic/jz4740.dtsi index 2beb78a62b7d..bfa97e29f348 100644 --- a/arch/mips/boot/dts/ingenic/jz4740.dtsi +++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include / { #address-cells = <1>; @@ -45,12 +46,52 @@ #clock-cells = <1>; }; - watchdog: watchdog@10002000 { - compatible = "ingenic,jz4740-watchdog"; - reg = <0x10002000 0x10>; + tcu: timer@10002000 { + compatible = "ingenic,jz4740-tcu"; + reg = <0x10002000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x10002000 0x1000>; - clocks = <&cgu JZ4740_CLK_RTC>; - clock-names = "rtc"; + #clock-cells = <1>; + + clocks = <&cgu JZ4740_CLK_RTC + &cgu JZ4740_CLK_EXT + &cgu JZ4740_CLK_PCLK + &cgu JZ4740_CLK_TCU>; + clock-names = "rtc", "ext", "pclk", "tcu"; + + interrupt-controller; + #interrupt-cells = <1>; + + interrupt-parent = <&intc>; + interrupts = <23 22 21>; + + watchdog: watchdog@0 { + compatible = "ingenic,jz4740-watchdog"; + reg = <0x0 0xc>; + + clocks = <&tcu TCU_CLK_WDT>; + clock-names = "wdt"; + }; + + pwm: pwm@40 { + compatible = "ingenic,jz4740-pwm"; + reg = <0x40 0x80>; + + #pwm-cells = <3>; + + clocks = <&tcu TCU_CLK_TIMER0 + &tcu TCU_CLK_TIMER1 + &tcu TCU_CLK_TIMER2 + &tcu TCU_CLK_TIMER3 + &tcu TCU_CLK_TIMER4 + &tcu TCU_CLK_TIMER5 + &tcu TCU_CLK_TIMER6 + &tcu TCU_CLK_TIMER7>; + clock-names = "timer0", "timer1", "timer2", "timer3", + "timer4", "timer5", "timer6", "timer7"; + }; }; rtc_dev: rtc@10003000 { diff --git a/arch/mips/boot/dts/ingenic/jz4770.dtsi b/arch/mips/boot/dts/ingenic/jz4770.dtsi index 49ede6c14ff3..89c7a4b9773c 100644 --- a/arch/mips/boot/dts/ingenic/jz4770.dtsi +++ b/arch/mips/boot/dts/ingenic/jz4770.dtsi @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include / { #address-cells = <1>; @@ -46,6 +47,64 @@ #clock-cells = <1>; }; + tcu: timer@10002000 { + compatible = "ingenic,jz4770-tcu"; + reg = <0x10002000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x10002000 0x1000>; + + #clock-cells = <1>; + + clocks = <&cgu JZ4770_CLK_RTC + &cgu JZ4770_CLK_EXT + &cgu JZ4770_CLK_PCLK + &cgu JZ4770_CLK_EXT>; + clock-names = "rtc", "ext", "pclk", "tcu"; + + interrupt-controller; + #interrupt-cells = <1>; + + interrupt-parent = <&intc>; + interrupts = <27 26 25>; + + watchdog: watchdog@0 { + compatible = "ingenic,jz4740-watchdog"; + reg = <0x0 0xc>; + + clocks = <&tcu TCU_CLK_WDT>; + clock-names = "wdt"; + }; + + pwm: pwm@40 { + compatible = "ingenic,jz4740-pwm"; + reg = <0x40 0x80>; + + #pwm-cells = <3>; + + clocks = <&tcu TCU_CLK_TIMER0 + &tcu TCU_CLK_TIMER1 + &tcu TCU_CLK_TIMER2 + &tcu TCU_CLK_TIMER3 + &tcu TCU_CLK_TIMER4 + &tcu TCU_CLK_TIMER5 + &tcu TCU_CLK_TIMER6 + &tcu TCU_CLK_TIMER7>; + clock-names = "timer0", "timer1", "timer2", "timer3", + "timer4", "timer5", "timer6", "timer7"; + }; + + ost: timer@e0 { + compatible = "ingenic,jz4770-ost"; + reg = <0xe0 0x20>; + + clocks = <&tcu TCU_CLK_OST>; + clock-names = "ost"; + + interrupts = <15>; + }; + }; + pinctrl: pin-controller@10010000 { compatible = "ingenic,jz4770-pinctrl"; reg = <0x10010000 0x600>; diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi index b03cdec56de9..9f45c075b4f8 100644 --- a/arch/mips/boot/dts/ingenic/jz4780.dtsi +++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include #include / { @@ -46,6 +47,64 @@ #clock-cells = <1>; }; + tcu: timer@10002000 { + compatible = "ingenic,jz4770-tcu"; + reg = <0x10002000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x10002000 0x1000>; + + #clock-cells = <1>; + + clocks = <&cgu JZ4780_CLK_RTCLK + &cgu JZ4780_CLK_EXCLK + &cgu JZ4780_CLK_PCLK + &cgu JZ4780_CLK_EXCLK>; + clock-names = "rtc", "ext", "pclk", "tcu"; + + interrupt-controller; + #interrupt-cells = <1>; + + interrupt-parent = <&intc>; + interrupts = <27 26 25>; + + watchdog: watchdog@0 { + compatible = "ingenic,jz4780-watchdog"; + reg = <0x0 0xc>; + + clocks = <&tcu TCU_CLK_WDT>; + clock-names = "wdt"; + }; + + pwm: pwm@40 { + compatible = "ingenic,jz4740-pwm"; + reg = <0x40 0x80>; + + #pwm-cells = <3>; + + clocks = <&tcu TCU_CLK_TIMER0 + &tcu TCU_CLK_TIMER1 + &tcu TCU_CLK_TIMER2 + &tcu TCU_CLK_TIMER3 + &tcu TCU_CLK_TIMER4 + &tcu TCU_CLK_TIMER5 + &tcu TCU_CLK_TIMER6 + &tcu TCU_CLK_TIMER7>; + clock-names = "timer0", "timer1", "timer2", "timer3", + "timer4", "timer5", "timer6", "timer7"; + }; + + ost: timer@e0 { + compatible = "ingenic,jz4770-ost"; + reg = <0xe0 0x20>; + + clocks = <&tcu TCU_CLK_OST>; + clock-names = "ost"; + + interrupts = <15>; + }; + }; + rtc_dev: rtc@10003000 { compatible = "ingenic,jz4780-rtc"; reg = <0x10003000 0x4c>; @@ -239,14 +298,6 @@ status = "disabled"; }; - watchdog: watchdog@10002000 { - compatible = "ingenic,jz4780-watchdog"; - reg = <0x10002000 0x10>; - - clocks = <&cgu JZ4780_CLK_RTCLK>; - clock-names = "rtc"; - }; - nemc: nemc@13410000 { compatible = "ingenic,jz4780-nemc"; reg = <0x13410000 0x10000>; From patchwork Sat Mar 2 23:34:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836911 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 71B8517EF for ; Sat, 2 Mar 2019 23:36:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F3A62A57F for ; Sat, 2 Mar 2019 23:36:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 525662A597; Sat, 2 Mar 2019 23:36:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E1E112A582 for ; Sat, 2 Mar 2019 23:36:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728042AbfCBXgo (ORCPT ); Sat, 2 Mar 2019 18:36:44 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35594 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727249AbfCBXgn (ORCPT ); Sat, 2 Mar 2019 18:36:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569800; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=kYQr/vg1nrG1G0ivoz+7hR5xR6cCY4JqbCWVjMCC1gU=; b=A0HuhlUu0mkcEhGcK4sXw0LKUxOVaaCnf3NvjGtyioZdPnSrxWY8lgUFwujK+gI/6D1p+G 88c0hY2lpSEu04rFyGalk8jWUcio8S3nx3cG211sE3XdcRDGl0uIsg9MZXEqOLNudxeuMh mH9IRJUOYQ3wz2CmA5dQ4F9GxovmyMw= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 21/27] MIPS: qi_lb60: Move PWM devices to devicetree Date: Sat, 2 Mar 2019 20:34:07 -0300 Message-Id: <20190302233413.14813-22-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Probe the few drivers using PWMs from devicetree, now that we have a devicetree node for the PWM driver. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change arch/mips/boot/dts/ingenic/qi_lb60.dts | 14 ++++++++++++++ arch/mips/jz4740/board-qi_lb60.c | 19 ------------------- 2 files changed, 14 insertions(+), 19 deletions(-) diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts index 76aaf8982554..85529a142409 100644 --- a/arch/mips/boot/dts/ingenic/qi_lb60.dts +++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts @@ -9,6 +9,14 @@ chosen { stdout-path = &uart0; }; + + beeper { + compatible = "pwm-beeper"; + pwms = <&pwm 4 0 0>; + + pinctrl-names = "default"; + pinctrl-0 = <&pins_pwm4>; + }; }; &ext { @@ -30,4 +38,10 @@ groups = "uart0-data"; bias-disable; }; + + pins_pwm4: pwm4 { + function = "pwm4"; + groups = "pwm4"; + bias-disable; + }; }; diff --git a/arch/mips/jz4740/board-qi_lb60.c b/arch/mips/jz4740/board-qi_lb60.c index 6718efb400f4..02b9c131a051 100644 --- a/arch/mips/jz4740/board-qi_lb60.c +++ b/arch/mips/jz4740/board-qi_lb60.c @@ -27,7 +27,6 @@ #include #include #include -#include #include @@ -395,17 +394,6 @@ static struct gpiod_lookup_table qi_lb60_mmc_gpio_table = { }, }; -/* beeper */ -static struct pwm_lookup qi_lb60_pwm_lookup[] = { - PWM_LOOKUP("jz4740-pwm", 4, "pwm-beeper", NULL, 0, - PWM_POLARITY_NORMAL), -}; - -static struct platform_device qi_lb60_pwm_beeper = { - .name = "pwm-beeper", - .id = -1, -}; - /* charger */ static char *qi_lb60_batteries[] = { "battery", @@ -454,10 +442,8 @@ static struct platform_device *jz_platform_devices[] __initdata = { &jz4740_i2s_device, &jz4740_codec_device, &jz4740_adc_device, - &jz4740_pwm_device, &jz4740_dma_device, &qi_lb60_gpio_keys, - &qi_lb60_pwm_beeper, &qi_lb60_charger_device, &qi_lb60_audio_device, }; @@ -486,10 +472,6 @@ static struct pinctrl_map pin_map[] __initdata = { "10010000.jz4740-pinctrl", "PD0", pin_cfg_bias_disable), PIN_MAP_CONFIGS_PIN_DEFAULT("jz4740-mmc.0", "10010000.jz4740-pinctrl", "PD2", pin_cfg_bias_disable), - - /* PWM pin configuration */ - PIN_MAP_MUX_GROUP_DEFAULT("jz4740-pwm", - "10010000.jz4740-pinctrl", "pwm4", "pwm4"), }; @@ -508,7 +490,6 @@ static int __init qi_lb60_init_platform_devices(void) spi_register_board_info(qi_lb60_spi_board_info, ARRAY_SIZE(qi_lb60_spi_board_info)); - pwm_add_table(qi_lb60_pwm_lookup, ARRAY_SIZE(qi_lb60_pwm_lookup)); pinctrl_register_mappings(pin_map, ARRAY_SIZE(pin_map)); return platform_add_devices(jz_platform_devices, From patchwork Sat Mar 2 23:34:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836925 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 12F3D1575 for ; Sat, 2 Mar 2019 23:37:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F2B4A2A57F for ; Sat, 2 Mar 2019 23:37:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E61082A586; Sat, 2 Mar 2019 23:37:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B3DA2A57F for ; Sat, 2 Mar 2019 23:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728060AbfCBXgw (ORCPT ); Sat, 2 Mar 2019 18:36:52 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35746 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727250AbfCBXgv (ORCPT ); Sat, 2 Mar 2019 18:36:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569808; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=hWVRVJ1JCLE41hirGJHq+OUF6CZM2gytoMVCFHHj/o8=; b=QmNhLhdimqrVm+9q1aE7N/57pwGC7vV3O7pFYnlxwkOtdCXJy9ata1TVMaA3MpkjXxZvRf mwnTQI7thKVkDAiScQKf7XfJK45m2cvht+jG1LmhDVHfPwVQF0aLhKqidGYHevuUBhcfLv T9aWgEPrJDajbH0GFp6nstM2PvpnphA= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 22/27] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Date: Sat, 2 Mar 2019 20:34:08 -0300 Message-Id: <20190302233413.14813-23-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The default clock (12 MHz) is too fast for the system timer, which fails to report time accurately. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: Remove ingenic,clocksource-channel property v7: No change v8: No change v9: No change v10: No change arch/mips/boot/dts/ingenic/qi_lb60.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts index 85529a142409..de9d45e2c24a 100644 --- a/arch/mips/boot/dts/ingenic/qi_lb60.dts +++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts @@ -45,3 +45,9 @@ bias-disable; }; }; + +&tcu { + /* 750 kHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <750000>, <750000>; +}; From patchwork Sat Mar 2 23:34:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2F4221575 for ; Sat, 2 Mar 2019 23:37:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1D50F2A57F for ; Sat, 2 Mar 2019 23:37:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 111B52A586; Sat, 2 Mar 2019 23:37:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA2CE2A57F for ; Sat, 2 Mar 2019 23:37:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727533AbfCBXg5 (ORCPT ); Sat, 2 Mar 2019 18:36:57 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35846 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727250AbfCBXg5 (ORCPT ); Sat, 2 Mar 2019 18:36:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569813; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=d1n75EL0YwMRDmo9Nsj0mJyLjEkAcDsj7MXfFDG59LE=; b=qQGDKCqiGir2MLBXIgVr5JEsbKd+hxAMn5b5bOrvWp4ikvXlizp5QmcBkYxM+imD9+UC2O rI2MhGPqmlTJg2MA85sho38JLSZDnvRhqqJKRPS357RoRtC4yDHDCXUFf4czfnLiqZaAl9 oJ4+CsVV9gR9EoKqR5D+Se7DAle5K58= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 23/27] MIPS: CI20: Reduce system timer and clocksource to 3 MHz Date: Sat, 2 Mar 2019 20:34:09 -0300 Message-Id: <20190302233413.14813-24-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The default clock (48 MHz) is too fast for the system timer. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: Set also the rate for the clocksource channel's clock v7: No change v8: No change v9: Don't configure clock timer1, as the OS Timer is used as clocksource on this SoC v10: Revert back to v8 bahaviour. Let the user choose what clocksource should be used. arch/mips/boot/dts/ingenic/ci20.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts index 4f7b1fa31cf5..30b01cfaaf5a 100644 --- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts @@ -238,3 +238,9 @@ bias-disable; }; }; + +&tcu { + /* 3 MHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <3000000>, <3000000>; +}; From patchwork Sat Mar 2 23:34:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836939 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2ED69188E for ; Sat, 2 Mar 2019 23:37:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1CD2A2A582 for ; Sat, 2 Mar 2019 23:37:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 111BB2A586; Sat, 2 Mar 2019 23:37:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BDBDA2A593 for ; Sat, 2 Mar 2019 23:37:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727228AbfCBXhE (ORCPT ); Sat, 2 Mar 2019 18:37:04 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:35930 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727009AbfCBXhD (ORCPT ); Sat, 2 Mar 2019 18:37:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569820; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=1C/GNtGg/oeT1OC5eTZ5EGM5rnZSDQ7pL2Lkjq8+hf0=; b=cGmcsUYoDhi8qhmG7lbdxR98AZ5WptttB7A1fYfuk/orzXqD3m5m1k/VRhvTl8FnVozhGf nGPriTyJVRPFelnnrF69d9sHTWNb3cC35/3iLFCy0252gLEwEEpYCbFQLVGNI4gpi9k+tP Ud+rrm7iKMtgiv62H25UOv/5mEzgMfQ= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 24/27] MIPS: CI20: defconfig: enable OST driver Date: Sat, 2 Mar 2019 20:34:10 -0300 Message-Id: <20190302233413.14813-25-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The OST driver provides a clocksource and sched_clock that are much more accurate than the default ones. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change arch/mips/configs/ci20_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/configs/ci20_defconfig b/arch/mips/configs/ci20_defconfig index 412800d5d7e0..2f101c7c1749 100644 --- a/arch/mips/configs/ci20_defconfig +++ b/arch/mips/configs/ci20_defconfig @@ -105,6 +105,7 @@ CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_JZ4740=y CONFIG_DMADEVICES=y CONFIG_DMA_JZ4780=y +CONFIG_INGENIC_OST=y # CONFIG_IOMMU_SUPPORT is not set CONFIG_MEMORY=y CONFIG_EXT4_FS=y From patchwork Sat Mar 2 23:34:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836929 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C6CB51390 for ; Sat, 2 Mar 2019 23:37:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B5ECA2A582 for ; Sat, 2 Mar 2019 23:37:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AA3BB2A588; Sat, 2 Mar 2019 23:37:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4B5652A586 for ; Sat, 2 Mar 2019 23:37:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727159AbfCBXhK (ORCPT ); Sat, 2 Mar 2019 18:37:10 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:36348 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727485AbfCBXhJ (ORCPT ); Sat, 2 Mar 2019 18:37:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569826; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=QXVem2TpVdYtsiNNPXp2mDxTvUig9TlLtbDdC9zzZmE=; b=AFFSjFniRIdHXTr/huYhATFf/DMWvKITK4K4Mj3haJmuksIAur794g8f9EATpWaZxkuc7S QcNYWondm1Ge++ruUNoqWdvUsTPuuAfCaNkhp0ErnJcPoz9tqeJy/oW2wKo+31QFMmrg1+ +2QPDlQam/3zqyAtkP6qkmD9k8gToSo= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 25/27] MIPS: GCW0: Reduce system timer and clocksource to 750 kHz Date: Sat, 2 Mar 2019 20:34:11 -0300 Message-Id: <20190302233413.14813-26-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The default clock (12 MHz) is too fast for the system timer. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v8: New patch v9: Don't configure clock timer1, as the OS Timer is used as clocksource on this SoC v10: Revert back to v8 bahaviour. Let the user choose what clocksource should be used. arch/mips/boot/dts/ingenic/gcw0.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/mips/boot/dts/ingenic/gcw0.dts b/arch/mips/boot/dts/ingenic/gcw0.dts index 35f0291e8d38..2f26b8a498e9 100644 --- a/arch/mips/boot/dts/ingenic/gcw0.dts +++ b/arch/mips/boot/dts/ingenic/gcw0.dts @@ -60,3 +60,9 @@ /* The WiFi module is connected to the UHC. */ status = "okay"; }; + +&tcu { + /* 750 kHz for the system timer and clocksource */ + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; + assigned-clock-rates = <750000>, <750000>; +}; From patchwork Sat Mar 2 23:34:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836933 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8B7551575 for ; Sat, 2 Mar 2019 23:37:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 789BA2A582 for ; Sat, 2 Mar 2019 23:37:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6C3A72A588; Sat, 2 Mar 2019 23:37:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E5CE12A582 for ; Sat, 2 Mar 2019 23:37:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727485AbfCBXhQ (ORCPT ); Sat, 2 Mar 2019 18:37:16 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:36484 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727262AbfCBXhP (ORCPT ); Sat, 2 Mar 2019 18:37:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569832; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=wlojTt9sWBO9pRjmkr52nuCsPprAKxSnP/SE1ZhNxSg=; b=S2Uwk9w6E48LNlxdAR1NKdxEJMZurRstf6I1kbc5okQwPNxuDe7PqdYu4NKkA0sRH36Hhd myTzlYnNjWc8EVbePcxVlDFtVFHg4oarPf4dJ7J0OEqZfDttEYqXOKXPazWAFWIKClCPrF zA5ITxedWsQNxQjqUEPqKk5RZwp/NRM= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 26/27] MIPS: GCW0: defconfig: Enable OST, watchdog, PWM drivers Date: Sat, 2 Mar 2019 20:34:12 -0300 Message-Id: <20190302233413.14813-27-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The OST driver provides a clocksource and sched_clock that are much more accurate than the default ones. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v8: New patch v9: No change v10: No change arch/mips/configs/gcw0_defconfig | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/mips/configs/gcw0_defconfig b/arch/mips/configs/gcw0_defconfig index a3e3eb3c5a8b..7116400e8cbf 100644 --- a/arch/mips/configs/gcw0_defconfig +++ b/arch/mips/configs/gcw0_defconfig @@ -20,8 +20,13 @@ CONFIG_SERIAL_8250=y # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_INGENIC=y +CONFIG_WATCHDOG=y +CONFIG_JZ4740_WDT=y CONFIG_USB=y CONFIG_USB_OHCI_HCD=y CONFIG_USB_OHCI_HCD_PLATFORM=y CONFIG_NOP_USB_XCEIV=y +CONFIG_INGENIC_OST=y +CONFIG_PWM=y +CONFIG_PWM_JZ4740=y CONFIG_TMPFS=y From patchwork Sat Mar 2 23:34:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 10836947 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 800F017EF for ; Sat, 2 Mar 2019 23:37:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6FD0A2A586 for ; Sat, 2 Mar 2019 23:37:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6328B2A582; Sat, 2 Mar 2019 23:37:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6A02F2A586 for ; Sat, 2 Mar 2019 23:37:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727433AbfCBXhZ (ORCPT ); Sat, 2 Mar 2019 18:37:25 -0500 Received: from outils.crapouillou.net ([89.234.176.41]:36672 "EHLO crapouillou.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726973AbfCBXhY (ORCPT ); Sat, 2 Mar 2019 18:37:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=crapouillou.net; s=mail; t=1551569841; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=WZbFJsTytWdTLB29CUoyINndByMD19qECWGesNhwPsI=; b=uzDGIoNYyEXo2TQNXNAqN7/5+LSMiIh1yPp0f76lU4cIWpFGtQ87ni19WgAhwOA8GH9xNP 6tFkLw7IDm/yNmoFQdPWR56KA86rUet0GqWFONHRJ+KhfGfnpDspAfrpUvIeO3Wh69tNgI IaaKqKV3ZiWG+0UZO8sjRnqDst/HaSg= From: Paul Cercueil To: Thierry Reding , Daniel Lezcano , Thomas Gleixner , Ralf Baechle , Paul Burton , James Hogan , Jonathan Corbet , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: Mathieu Malaterre , od@zcrc.me, linux-pwm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-mips@vger.kernel.org, linux-doc@vger.kernel.org, linux-clk@vger.kernel.org, Paul Cercueil Subject: [PATCH v10 27/27] MIPS: jz4740: Drop obsolete code Date: Sat, 2 Mar 2019 20:34:13 -0300 Message-Id: <20190302233413.14813-28-paul@crapouillou.net> In-Reply-To: <20190302233413.14813-1-paul@crapouillou.net> References: <20190302233413.14813-1-paul@crapouillou.net> Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The old clocksource/timer platform code is now obsoleted by the newly introduced ingenic-timer and ingenic-ost drivers. Signed-off-by: Paul Cercueil Tested-by: Mathieu Malaterre Tested-by: Artur Rojek --- Notes: v5: New patch v6: No change v7: No change v8: No change v9: No change v10: No change arch/mips/include/asm/mach-jz4740/platform.h | 1 - arch/mips/include/asm/mach-jz4740/timer.h | 135 -------------------- arch/mips/jz4740/Makefile | 3 +- arch/mips/jz4740/platform.c | 6 - arch/mips/jz4740/setup.c | 8 ++ arch/mips/jz4740/time.c | 176 --------------------------- arch/mips/jz4740/timer.c | 51 -------- 7 files changed, 9 insertions(+), 371 deletions(-) delete mode 100644 arch/mips/include/asm/mach-jz4740/timer.h delete mode 100644 arch/mips/jz4740/time.c delete mode 100644 arch/mips/jz4740/timer.c diff --git a/arch/mips/include/asm/mach-jz4740/platform.h b/arch/mips/include/asm/mach-jz4740/platform.h index c0c932ac72a7..cd464d956882 100644 --- a/arch/mips/include/asm/mach-jz4740/platform.h +++ b/arch/mips/include/asm/mach-jz4740/platform.h @@ -29,7 +29,6 @@ extern struct platform_device jz4740_i2s_device; extern struct platform_device jz4740_pcm_device; extern struct platform_device jz4740_codec_device; extern struct platform_device jz4740_adc_device; -extern struct platform_device jz4740_pwm_device; extern struct platform_device jz4740_dma_device; #endif diff --git a/arch/mips/include/asm/mach-jz4740/timer.h b/arch/mips/include/asm/mach-jz4740/timer.h deleted file mode 100644 index 8750a1d04e22..000000000000 --- a/arch/mips/include/asm/mach-jz4740/timer.h +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright (C) 2010, Lars-Peter Clausen - * JZ4740 platform timer support - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#ifndef __ASM_MACH_JZ4740_TIMER -#define __ASM_MACH_JZ4740_TIMER - -#define JZ_REG_TIMER_STOP 0x0C -#define JZ_REG_TIMER_STOP_SET 0x1C -#define JZ_REG_TIMER_STOP_CLEAR 0x2C -#define JZ_REG_TIMER_ENABLE 0x00 -#define JZ_REG_TIMER_ENABLE_SET 0x04 -#define JZ_REG_TIMER_ENABLE_CLEAR 0x08 -#define JZ_REG_TIMER_FLAG 0x10 -#define JZ_REG_TIMER_FLAG_SET 0x14 -#define JZ_REG_TIMER_FLAG_CLEAR 0x18 -#define JZ_REG_TIMER_MASK 0x20 -#define JZ_REG_TIMER_MASK_SET 0x24 -#define JZ_REG_TIMER_MASK_CLEAR 0x28 - -#define JZ_REG_TIMER_DFR(x) (((x) * 0x10) + 0x30) -#define JZ_REG_TIMER_DHR(x) (((x) * 0x10) + 0x34) -#define JZ_REG_TIMER_CNT(x) (((x) * 0x10) + 0x38) -#define JZ_REG_TIMER_CTRL(x) (((x) * 0x10) + 0x3C) - -#define JZ_TIMER_IRQ_HALF(x) BIT((x) + 0x10) -#define JZ_TIMER_IRQ_FULL(x) BIT(x) - -#define JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN BIT(9) -#define JZ_TIMER_CTRL_PWM_ACTIVE_LOW BIT(8) -#define JZ_TIMER_CTRL_PWM_ENABLE BIT(7) -#define JZ_TIMER_CTRL_PRESCALE_MASK 0x1c -#define JZ_TIMER_CTRL_PRESCALE_OFFSET 0x3 -#define JZ_TIMER_CTRL_PRESCALE_1 (0 << 3) -#define JZ_TIMER_CTRL_PRESCALE_4 (1 << 3) -#define JZ_TIMER_CTRL_PRESCALE_16 (2 << 3) -#define JZ_TIMER_CTRL_PRESCALE_64 (3 << 3) -#define JZ_TIMER_CTRL_PRESCALE_256 (4 << 3) -#define JZ_TIMER_CTRL_PRESCALE_1024 (5 << 3) - -#define JZ_TIMER_CTRL_PRESCALER(x) ((x) << JZ_TIMER_CTRL_PRESCALE_OFFSET) - -#define JZ_TIMER_CTRL_SRC_EXT BIT(2) -#define JZ_TIMER_CTRL_SRC_RTC BIT(1) -#define JZ_TIMER_CTRL_SRC_PCLK BIT(0) - -extern void __iomem *jz4740_timer_base; -void __init jz4740_timer_init(void); - -void jz4740_timer_enable_watchdog(void); -void jz4740_timer_disable_watchdog(void); - -static inline void jz4740_timer_stop(unsigned int timer) -{ - writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_SET); -} - -static inline void jz4740_timer_start(unsigned int timer) -{ - writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR); -} - -static inline bool jz4740_timer_is_enabled(unsigned int timer) -{ - return readb(jz4740_timer_base + JZ_REG_TIMER_ENABLE) & BIT(timer); -} - -static inline void jz4740_timer_enable(unsigned int timer) -{ - writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_SET); -} - -static inline void jz4740_timer_disable(unsigned int timer) -{ - writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_CLEAR); -} - -static inline void jz4740_timer_set_period(unsigned int timer, uint16_t period) -{ - writew(period, jz4740_timer_base + JZ_REG_TIMER_DFR(timer)); -} - -static inline void jz4740_timer_set_duty(unsigned int timer, uint16_t duty) -{ - writew(duty, jz4740_timer_base + JZ_REG_TIMER_DHR(timer)); -} - -static inline void jz4740_timer_set_count(unsigned int timer, uint16_t count) -{ - writew(count, jz4740_timer_base + JZ_REG_TIMER_CNT(timer)); -} - -static inline uint16_t jz4740_timer_get_count(unsigned int timer) -{ - return readw(jz4740_timer_base + JZ_REG_TIMER_CNT(timer)); -} - -static inline void jz4740_timer_ack_full(unsigned int timer) -{ - writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR); -} - -static inline void jz4740_timer_irq_full_enable(unsigned int timer) -{ - writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR); - writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_CLEAR); -} - -static inline void jz4740_timer_irq_full_disable(unsigned int timer) -{ - writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_SET); -} - -static inline void jz4740_timer_set_ctrl(unsigned int timer, uint16_t ctrl) -{ - writew(ctrl, jz4740_timer_base + JZ_REG_TIMER_CTRL(timer)); -} - -static inline uint16_t jz4740_timer_get_ctrl(unsigned int timer) -{ - return readw(jz4740_timer_base + JZ_REG_TIMER_CTRL(timer)); -} - -#endif diff --git a/arch/mips/jz4740/Makefile b/arch/mips/jz4740/Makefile index 88d6aa7d000b..72eb805028a4 100644 --- a/arch/mips/jz4740/Makefile +++ b/arch/mips/jz4740/Makefile @@ -5,8 +5,7 @@ # Object file lists. -obj-y += prom.o time.o reset.o setup.o \ - platform.o timer.o +obj-y += prom.o reset.o setup.o platform.o CFLAGS_setup.o = -I$(src)/../../../scripts/dtc/libfdt diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c index cbc5f8e87230..af0ecaeb4931 100644 --- a/arch/mips/jz4740/platform.c +++ b/arch/mips/jz4740/platform.c @@ -233,12 +233,6 @@ struct platform_device jz4740_adc_device = { .resource = jz4740_adc_resources, }; -/* PWM */ -struct platform_device jz4740_pwm_device = { - .name = "jz4740-pwm", - .id = -1, -}; - /* DMA */ static struct resource jz4740_dma_resources[] = { { diff --git a/arch/mips/jz4740/setup.c b/arch/mips/jz4740/setup.c index afb40f8bce96..099e4164afff 100644 --- a/arch/mips/jz4740/setup.c +++ b/arch/mips/jz4740/setup.c @@ -14,6 +14,8 @@ * */ +#include +#include #include #include #include @@ -101,3 +103,9 @@ void __init arch_init_irq(void) { irqchip_init(); } + +void __init plat_time_init(void) +{ + of_clk_init(NULL); + timer_probe(); +} diff --git a/arch/mips/jz4740/time.c b/arch/mips/jz4740/time.c deleted file mode 100644 index 2ca9160f642a..000000000000 --- a/arch/mips/jz4740/time.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Copyright (C) 2010, Lars-Peter Clausen - * JZ4740 platform time support - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include -#include -#include -#include -#include - -#include -#include - -#include -#include -#include -#include - -#include "clock.h" - -#define TIMER_CLOCKEVENT 0 -#define TIMER_CLOCKSOURCE 1 - -static uint16_t jz4740_jiffies_per_tick; - -static u64 jz4740_clocksource_read(struct clocksource *cs) -{ - return jz4740_timer_get_count(TIMER_CLOCKSOURCE); -} - -static struct clocksource jz4740_clocksource = { - .name = "jz4740-timer", - .rating = 200, - .read = jz4740_clocksource_read, - .mask = CLOCKSOURCE_MASK(16), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -static u64 notrace jz4740_read_sched_clock(void) -{ - return jz4740_timer_get_count(TIMER_CLOCKSOURCE); -} - -static irqreturn_t jz4740_clockevent_irq(int irq, void *devid) -{ - struct clock_event_device *cd = devid; - - jz4740_timer_ack_full(TIMER_CLOCKEVENT); - - if (!clockevent_state_periodic(cd)) - jz4740_timer_disable(TIMER_CLOCKEVENT); - - cd->event_handler(cd); - - return IRQ_HANDLED; -} - -static int jz4740_clockevent_set_periodic(struct clock_event_device *evt) -{ - jz4740_timer_set_count(TIMER_CLOCKEVENT, 0); - jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick); - jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT); - jz4740_timer_enable(TIMER_CLOCKEVENT); - - return 0; -} - -static int jz4740_clockevent_resume(struct clock_event_device *evt) -{ - jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT); - jz4740_timer_enable(TIMER_CLOCKEVENT); - - return 0; -} - -static int jz4740_clockevent_shutdown(struct clock_event_device *evt) -{ - jz4740_timer_disable(TIMER_CLOCKEVENT); - - return 0; -} - -static int jz4740_clockevent_set_next(unsigned long evt, - struct clock_event_device *cd) -{ - jz4740_timer_set_count(TIMER_CLOCKEVENT, 0); - jz4740_timer_set_period(TIMER_CLOCKEVENT, evt); - jz4740_timer_enable(TIMER_CLOCKEVENT); - - return 0; -} - -static struct clock_event_device jz4740_clockevent = { - .name = "jz4740-timer", - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_next_event = jz4740_clockevent_set_next, - .set_state_shutdown = jz4740_clockevent_shutdown, - .set_state_periodic = jz4740_clockevent_set_periodic, - .set_state_oneshot = jz4740_clockevent_shutdown, - .tick_resume = jz4740_clockevent_resume, - .rating = 200, -#ifdef CONFIG_MACH_JZ4740 - .irq = JZ4740_IRQ_TCU0, -#endif -#if defined(CONFIG_MACH_JZ4770) || defined(CONFIG_MACH_JZ4780) - .irq = JZ4780_IRQ_TCU2, -#endif -}; - -static struct irqaction timer_irqaction = { - .handler = jz4740_clockevent_irq, - .flags = IRQF_PERCPU | IRQF_TIMER, - .name = "jz4740-timerirq", - .dev_id = &jz4740_clockevent, -}; - -void __init plat_time_init(void) -{ - int ret; - uint32_t clk_rate; - uint16_t ctrl; - struct clk *ext_clk; - - of_clk_init(NULL); - jz4740_timer_init(); - - ext_clk = clk_get(NULL, "ext"); - if (IS_ERR(ext_clk)) - panic("unable to get ext clock"); - clk_rate = clk_get_rate(ext_clk) >> 4; - clk_put(ext_clk); - - jz4740_jiffies_per_tick = DIV_ROUND_CLOSEST(clk_rate, HZ); - - clockevent_set_clock(&jz4740_clockevent, clk_rate); - jz4740_clockevent.min_delta_ns = clockevent_delta2ns(100, &jz4740_clockevent); - jz4740_clockevent.min_delta_ticks = 100; - jz4740_clockevent.max_delta_ns = clockevent_delta2ns(0xffff, &jz4740_clockevent); - jz4740_clockevent.max_delta_ticks = 0xffff; - jz4740_clockevent.cpumask = cpumask_of(0); - - clockevents_register_device(&jz4740_clockevent); - - ret = clocksource_register_hz(&jz4740_clocksource, clk_rate); - - if (ret) - printk(KERN_ERR "Failed to register clocksource: %d\n", ret); - - sched_clock_register(jz4740_read_sched_clock, 16, clk_rate); - - setup_irq(jz4740_clockevent.irq, &timer_irqaction); - - ctrl = JZ_TIMER_CTRL_PRESCALE_16 | JZ_TIMER_CTRL_SRC_EXT; - - jz4740_timer_set_ctrl(TIMER_CLOCKEVENT, ctrl); - jz4740_timer_set_ctrl(TIMER_CLOCKSOURCE, ctrl); - - jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick); - jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT); - - jz4740_timer_set_period(TIMER_CLOCKSOURCE, 0xffff); - - jz4740_timer_enable(TIMER_CLOCKEVENT); - jz4740_timer_enable(TIMER_CLOCKSOURCE); -} diff --git a/arch/mips/jz4740/timer.c b/arch/mips/jz4740/timer.c deleted file mode 100644 index 777877feef71..000000000000 --- a/arch/mips/jz4740/timer.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Copyright (C) 2010, Lars-Peter Clausen - * JZ4740 platform timer support - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include -#include -#include -#include - -#include -#include - -void __iomem *jz4740_timer_base; -EXPORT_SYMBOL_GPL(jz4740_timer_base); - -void jz4740_timer_enable_watchdog(void) -{ - writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR); -} -EXPORT_SYMBOL_GPL(jz4740_timer_enable_watchdog); - -void jz4740_timer_disable_watchdog(void) -{ - writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET); -} -EXPORT_SYMBOL_GPL(jz4740_timer_disable_watchdog); - -void __init jz4740_timer_init(void) -{ - jz4740_timer_base = ioremap(JZ4740_TCU_BASE_ADDR, 0x100); - - if (!jz4740_timer_base) - panic("Failed to ioremap timer registers"); - - /* Disable all timer clocks except for those used as system timers */ - writel(0x000100fc, jz4740_timer_base + JZ_REG_TIMER_STOP_SET); - - /* Timer irqs are unmasked by default, mask them */ - writel(0x00ff00ff, jz4740_timer_base + JZ_REG_TIMER_MASK_SET); -}