From patchwork Fri Jul 27 21:09:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10547725 X-Patchwork-Delegate: geert@linux-m68k.org 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 5F4BF13BB for ; Fri, 27 Jul 2018 21:09:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DFC32C63C for ; Fri, 27 Jul 2018 21:09:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 410B82C642; Fri, 27 Jul 2018 21:09:43 +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=-7.9 required=2.0 tests=BAYES_00,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 6432D2C63E for ; Fri, 27 Jul 2018 21:09:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389722AbeG0WdU (ORCPT ); Fri, 27 Jul 2018 18:33:20 -0400 Received: from relmlor3.renesas.com ([210.160.252.173]:26738 "EHLO relmlie2.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389211AbeG0WdU (ORCPT ); Fri, 27 Jul 2018 18:33:20 -0400 Received: from unknown (HELO relmlir2.idc.renesas.com) ([10.200.68.152]) by relmlie2.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:38 +0900 Received: from relmlii2.idc.renesas.com (relmlii2.idc.renesas.com [10.200.68.66]) by relmlir2.idc.renesas.com (Postfix) with ESMTP id B4FB04DDC9; Sat, 28 Jul 2018 06:09:38 +0900 (JST) X-IronPort-AV: E=Sophos;i="5.51,411,1526310000"; d="scan'208";a="288098554" Received: from unknown (HELO rtamta01.rta.renesas.com) ([143.103.48.75]) by relmlii2.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:36 +0900 Received: from ubuntu.localdomain (unknown [143.103.58.70]) by rtamta01.rta.renesas.com (Postfix) with ESMTP id 64CB71D9; Fri, 27 Jul 2018 21:09:31 +0000 (UTC) From: Chris Brandt To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Geert Uytterhoeven Cc: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman , Chris Brandt Subject: [PATCH 1/4] serial: sh-sci: Improve interrupts description Date: Fri, 27 Jul 2018 16:09:13 -0500 Message-Id: <20180727210916.66642-2-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180727210916.66642-1-chris.brandt@renesas.com> References: <20180727210916.66642-1-chris.brandt@renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Describe interrupts property in more detail, especially when there are more than one interrupt. Signed-off-by: Chris Brandt Reviewed-by: Geert Uytterhoeven --- .../devicetree/bindings/serial/renesas,sci-serial.txt | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt index a7cda6550100..eaca9da79d83 100644 --- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt +++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt @@ -73,7 +73,21 @@ Required properties: family-specific and/or generic versions. - reg: Base address and length of the I/O registers used by the UART. - - interrupts: Must contain an interrupt-specifier for the SCIx interrupt. + - interrupts: Must contain one or more interrupt-specifiers for the SCIx. + If a single interrupt is expressed, then all events are + multiplexed into this single interrupt. + + If multiple interrupts are provided by the hardware, the order + in which the interrupts are listed must match order below. Note + that some HW interrupt events may be muxed together resulting + in duplicate entries. + The interrupt order is as follows: + 1. Error (ERI) + 2. Receive buffer full (RXI) + 3. Transmit buffer empty (TXI) + 4. Break (BRI) + 5. Data Ready (DRI) + 6. Transmit End (TEI) - clocks: Must contain a phandle and clock-specifier pair for each entry in clock-names. From patchwork Fri Jul 27 21:09:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10547729 X-Patchwork-Delegate: geert@linux-m68k.org 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 8025A139A for ; Fri, 27 Jul 2018 21:09:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7281A2C63C for ; Fri, 27 Jul 2018 21:09:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6694A2C63E; Fri, 27 Jul 2018 21:09:44 +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=-7.9 required=2.0 tests=BAYES_00,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 D6A0D2C640 for ; Fri, 27 Jul 2018 21:09:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389724AbeG0WdV (ORCPT ); Fri, 27 Jul 2018 18:33:21 -0400 Received: from relmlor3.renesas.com ([210.160.252.173]:2454 "EHLO relmlie2.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389713AbeG0WdV (ORCPT ); Fri, 27 Jul 2018 18:33:21 -0400 Received: from unknown (HELO relmlir2.idc.renesas.com) ([10.200.68.152]) by relmlie2.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:40 +0900 Received: from relmlii2.idc.renesas.com (relmlii2.idc.renesas.com [10.200.68.66]) by relmlir2.idc.renesas.com (Postfix) with ESMTP id 42A534DDD0; Sat, 28 Jul 2018 06:09:40 +0900 (JST) X-IronPort-AV: E=Sophos;i="5.51,411,1526310000"; d="scan'208";a="288098555" Received: from unknown (HELO rtamta01.rta.renesas.com) ([143.103.48.75]) by relmlii2.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:38 +0900 Received: from ubuntu.localdomain (unknown [143.103.58.70]) by rtamta01.rta.renesas.com (Postfix) with ESMTP id 0F5271F8; Fri, 27 Jul 2018 21:09:32 +0000 (UTC) From: Chris Brandt To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Geert Uytterhoeven Cc: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman , Chris Brandt Subject: [PATCH 2/4] serial: sh-sci: Allow for compressed SCIF address Date: Fri, 27 Jul 2018 16:09:14 -0500 Message-Id: <20180727210916.66642-3-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180727210916.66642-1-chris.brandt@renesas.com> References: <20180727210916.66642-1-chris.brandt@renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some devices with SCIx_SH4_SCIF_REGTYPE have no space between registers. Use the register area size to determine the spacing between register. Signed-off-by: Chris Brandt --- drivers/tty/serial/sh-sci.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 6ff6f2bf3b9b..138296ec9a7d 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -348,15 +348,15 @@ static const struct sci_port_params sci_port_params[SCIx_NR_REGTYPES] = { [SCIx_SH4_SCIF_REGTYPE] = { .regs = { [SCSMR] = { 0x00, 16 }, - [SCBRR] = { 0x04, 8 }, - [SCSCR] = { 0x08, 16 }, - [SCxTDR] = { 0x0c, 8 }, - [SCxSR] = { 0x10, 16 }, - [SCxRDR] = { 0x14, 8 }, - [SCFCR] = { 0x18, 16 }, - [SCFDR] = { 0x1c, 16 }, - [SCSPTR] = { 0x20, 16 }, - [SCLSR] = { 0x24, 16 }, + [SCBRR] = { 0x02, 8 }, + [SCSCR] = { 0x04, 16 }, + [SCxTDR] = { 0x06, 8 }, + [SCxSR] = { 0x08, 16 }, + [SCxRDR] = { 0x0a, 8 }, + [SCFCR] = { 0x0c, 16 }, + [SCFDR] = { 0x0e, 16 }, + [SCSPTR] = { 0x10, 16 }, + [SCLSR] = { 0x12, 16 }, }, .fifosize = 16, .overrun_reg = SCLSR, @@ -2939,6 +2939,10 @@ static int sci_init_single(struct platform_device *dev, port->regshift = 1; } + if (p->regtype == SCIx_SH4_SCIF_REGTYPE) + if (sci_port->reg_size >= 0x20) + port->regshift = 1; + /* * The UART port needs an IRQ value, so we peg this to the RX IRQ * for the multi-IRQ ports, which is where we are primarily From patchwork Fri Jul 27 21:09:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10547727 X-Patchwork-Delegate: geert@linux-m68k.org 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 031129093 for ; Fri, 27 Jul 2018 21:09:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E870A2C63C for ; Fri, 27 Jul 2018 21:09:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DCA472C642; Fri, 27 Jul 2018 21:09:43 +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=-7.9 required=2.0 tests=BAYES_00,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 85DDB2C63C for ; Fri, 27 Jul 2018 21:09:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389727AbeG0WdW (ORCPT ); Fri, 27 Jul 2018 18:33:22 -0400 Received: from relmlor4.renesas.com ([210.160.252.174]:50705 "EHLO relmlie3.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389211AbeG0WdW (ORCPT ); Fri, 27 Jul 2018 18:33:22 -0400 Received: from unknown (HELO relmlir3.idc.renesas.com) ([10.200.68.153]) by relmlie3.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:41 +0900 Received: from relmlii1.idc.renesas.com (relmlii1.idc.renesas.com [10.200.68.65]) by relmlir3.idc.renesas.com (Postfix) with ESMTP id CC8D44AC74; Sat, 28 Jul 2018 06:09:41 +0900 (JST) X-IronPort-AV: E=Sophos;i="5.51,411,1526310000"; d="scan'208";a="286584339" Received: from unknown (HELO rtamta01.rta.renesas.com) ([143.103.48.75]) by relmlii1.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:39 +0900 Received: from ubuntu.localdomain (unknown [143.103.58.70]) by rtamta01.rta.renesas.com (Postfix) with ESMTP id BD3731FC; Fri, 27 Jul 2018 21:09:34 +0000 (UTC) From: Chris Brandt To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Geert Uytterhoeven Cc: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman , Chris Brandt Subject: [PATCH 3/4] serial: sh-sci: Remove SCIx_RZ_SCIFA_REGTYPE Date: Fri, 27 Jul 2018 16:09:15 -0500 Message-Id: <20180727210916.66642-4-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180727210916.66642-1-chris.brandt@renesas.com> References: <20180727210916.66642-1-chris.brandt@renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There is no more need for SCIx_RZ_SCIFA_REGTYPE now that SCIx_SH4_SCIF_REGTYPE can provide the same register/address definitions. Also, R7S9210 no longer needs a special compatible since the standard "renesas,scif" will work just fine. Signed-off-by: Chris Brandt Reviewed-by: Geert Uytterhoeven --- drivers/tty/serial/sh-sci.c | 31 ------------------------------- include/linux/serial_sci.h | 1 - 2 files changed, 32 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 138296ec9a7d..cb4f7d3e7192 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -293,33 +293,6 @@ static const struct sci_port_params sci_port_params[SCIx_NR_REGTYPES] = { .error_clear = SCIF_ERROR_CLEAR, }, - /* - * The "SCIFA" that is in RZ/T and RZ/A2. - * It looks like a normal SCIF with FIFO data, but with a - * compressed address space. Also, the break out of interrupts - * are different: ERI/BRI, RXI, TXI, TEI, DRI. - */ - [SCIx_RZ_SCIFA_REGTYPE] = { - .regs = { - [SCSMR] = { 0x00, 16 }, - [SCBRR] = { 0x02, 8 }, - [SCSCR] = { 0x04, 16 }, - [SCxTDR] = { 0x06, 8 }, - [SCxSR] = { 0x08, 16 }, - [SCxRDR] = { 0x0A, 8 }, - [SCFCR] = { 0x0C, 16 }, - [SCFDR] = { 0x0E, 16 }, - [SCSPTR] = { 0x10, 16 }, - [SCLSR] = { 0x12, 16 }, - }, - .fifosize = 16, - .overrun_reg = SCLSR, - .overrun_mask = SCLSR_ORER, - .sampling_rate_mask = SCI_SR(32), - .error_mask = SCIF_DEFAULT_ERROR_MASK, - .error_clear = SCIF_ERROR_CLEAR, - }, - /* * Common SH-3 SCIF definitions. */ @@ -3147,10 +3120,6 @@ static const struct of_device_id of_sci_match[] = { .compatible = "renesas,scif-r7s72100", .data = SCI_OF_DATA(PORT_SCIF, SCIx_SH2_SCIF_FIFODATA_REGTYPE), }, - { - .compatible = "renesas,scif-r7s9210", - .data = SCI_OF_DATA(PORT_SCIF, SCIx_RZ_SCIFA_REGTYPE), - }, /* Family-specific types */ { .compatible = "renesas,rcar-gen1-scif", diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 1c89611e0e06..c0e795d95477 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -36,7 +36,6 @@ enum { SCIx_SH4_SCIF_FIFODATA_REGTYPE, SCIx_SH7705_SCIF_REGTYPE, SCIx_HSCIF_REGTYPE, - SCIx_RZ_SCIFA_REGTYPE, SCIx_NR_REGTYPES, }; From patchwork Fri Jul 27 21:09:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10547731 X-Patchwork-Delegate: geert@linux-m68k.org 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 9FBA113BB for ; Fri, 27 Jul 2018 21:09:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 90C722C63C for ; Fri, 27 Jul 2018 21:09:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 84FDC2C640; Fri, 27 Jul 2018 21:09:47 +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=-7.9 required=2.0 tests=BAYES_00,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 103932C63C for ; Fri, 27 Jul 2018 21:09:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389733AbeG0WdZ (ORCPT ); Fri, 27 Jul 2018 18:33:25 -0400 Received: from relmlor4.renesas.com ([210.160.252.174]:50705 "EHLO relmlie3.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389211AbeG0WdZ (ORCPT ); Fri, 27 Jul 2018 18:33:25 -0400 Received: from unknown (HELO relmlir3.idc.renesas.com) ([10.200.68.153]) by relmlie3.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:44 +0900 Received: from relmlii1.idc.renesas.com (relmlii1.idc.renesas.com [10.200.68.65]) by relmlir3.idc.renesas.com (Postfix) with ESMTP id 591B64AC82; Sat, 28 Jul 2018 06:09:44 +0900 (JST) X-IronPort-AV: E=Sophos;i="5.51,411,1526310000"; d="scan'208";a="286584340" Received: from unknown (HELO rtamta01.rta.renesas.com) ([143.103.48.75]) by relmlii1.idc.renesas.com with ESMTP; 28 Jul 2018 06:09:42 +0900 Received: from ubuntu.localdomain (unknown [143.103.58.70]) by rtamta01.rta.renesas.com (Postfix) with ESMTP id 7F4FA210; Fri, 27 Jul 2018 21:09:36 +0000 (UTC) From: Chris Brandt To: Greg Kroah-Hartman , Rob Herring , Mark Rutland , Geert Uytterhoeven Cc: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Simon Horman , Chris Brandt Subject: [PATCH 4/4] serial: sh-sci: Improve support for separate TEI and DRI interrupts Date: Fri, 27 Jul 2018 16:09:16 -0500 Message-Id: <20180727210916.66642-5-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180727210916.66642-1-chris.brandt@renesas.com> References: <20180727210916.66642-1-chris.brandt@renesas.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some SCIF versions mux error and break interrupts together and then provide a separate interrupt ID for just TEI/DRI. Allow all 6 types of interrupts to be specified via platform data (or DT) and for any signals that are muxed together (have the same interrupt number) simply register one handler. Signed-off-by: Chris Brandt Reviewed-by: Geert Uytterhoeven --- drivers/tty/serial/sh-sci.c | 90 ++++++++++++++++++++------------------------- 1 file changed, 40 insertions(+), 50 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index cb4f7d3e7192..a3519e8e4d13 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -65,7 +65,8 @@ enum { SCIx_RXI_IRQ, SCIx_TXI_IRQ, SCIx_BRI_IRQ, - SCIx_TEIDRI_IRQ, + SCIx_DRI_IRQ, + SCIx_TEI_IRQ, SCIx_NR_IRQS, SCIx_MUX_IRQ = SCIx_NR_IRQS, /* special case */ @@ -77,9 +78,6 @@ enum { ((port)->irqs[SCIx_ERI_IRQ] && \ ((port)->irqs[SCIx_RXI_IRQ] < 0)) -#define SCIx_TEIDRI_IRQ_EXISTS(port) \ - ((port)->irqs[SCIx_TEIDRI_IRQ] > 0) - enum SCI_CLKS { SCI_FCK, /* Functional Clock */ SCI_SCK, /* Optional External Clock */ @@ -1685,14 +1683,23 @@ static irqreturn_t sci_tx_interrupt(int irq, void *ptr) return IRQ_HANDLED; } -static irqreturn_t sci_br_interrupt(int irq, void *ptr); +static irqreturn_t sci_br_interrupt(int irq, void *ptr) +{ + struct uart_port *port = ptr; + + /* Handle BREAKs */ + sci_handle_breaks(port); + sci_clear_SCxSR(port, SCxSR_BREAK_CLEAR(port)); + + return IRQ_HANDLED; +} static irqreturn_t sci_er_interrupt(int irq, void *ptr) { struct uart_port *port = ptr; struct sci_port *s = to_sci_port(port); - if (SCIx_TEIDRI_IRQ_EXISTS(s)) { + if (s->irqs[SCIx_ERI_IRQ] == s->irqs[SCIx_BRI_IRQ]) { /* Break and Error interrupts are muxed */ unsigned short ssr_status = serial_port_in(port, SCxSR); @@ -1727,17 +1734,6 @@ static irqreturn_t sci_er_interrupt(int irq, void *ptr) return IRQ_HANDLED; } -static irqreturn_t sci_br_interrupt(int irq, void *ptr) -{ - struct uart_port *port = ptr; - - /* Handle BREAKs */ - sci_handle_breaks(port); - sci_clear_SCxSR(port, SCxSR_BREAK_CLEAR(port)); - - return IRQ_HANDLED; -} - static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) { unsigned short ssr_status, scr_status, err_enabled, orer_status = 0; @@ -1811,6 +1807,16 @@ static const struct sci_irq_desc { .handler = sci_br_interrupt, }, + [SCIx_DRI_IRQ] = { + .desc = "rx ready", + .handler = sci_rx_interrupt, + }, + + [SCIx_TEI_IRQ] = { + .desc = "tx end", + .handler = sci_tx_interrupt, + }, + /* * Special muxed handler. */ @@ -1823,12 +1829,19 @@ static const struct sci_irq_desc { static int sci_request_irq(struct sci_port *port) { struct uart_port *up = &port->port; - int i, j, ret = 0; + int i, j, w, ret = 0; for (i = j = 0; i < SCIx_NR_IRQS; i++, j++) { const struct sci_irq_desc *desc; int irq; + /* Check if already registered (muxed) */ + for (w = 0; w < i; w++) + if (port->irqs[w] == port->irqs[i]) + w = i + 1; + if (w > i) + continue; + if (SCIx_IRQ_IS_MUXED(port)) { i = SCIx_MUX_IRQ; irq = up->irq; @@ -1845,31 +1858,8 @@ static int sci_request_irq(struct sci_port *port) desc = sci_irq_desc + i; port->irqstr[j] = NULL; - if (SCIx_TEIDRI_IRQ_EXISTS(port)) { - /* - * ERI and BRI are muxed, just register ERI and - * ignore BRI. - * TEI and DRI are muxed, but only DRI - * is enabled, so use RXI handler - */ - if (i == SCIx_ERI_IRQ) - port->irqstr[j] = kasprintf(GFP_KERNEL, - "%s:err + break", - dev_name(up->dev)); - if (i == SCIx_BRI_IRQ) - continue; - if (i == SCIx_TEIDRI_IRQ) { - port->irqstr[j] = kasprintf(GFP_KERNEL, - "%s:tx end + rx ready", - dev_name(up->dev)); - desc = sci_irq_desc + SCIx_RXI_IRQ; - } - } - - if (!port->irqstr[j]) - port->irqstr[j] = kasprintf(GFP_KERNEL, "%s:%s", - dev_name(up->dev), - desc->desc); + port->irqstr[j] = kasprintf(GFP_KERNEL, "%s:%s", + dev_name(up->dev), desc->desc); if (!port->irqstr[j]) { ret = -ENOMEM; goto out_nomem; @@ -2842,17 +2832,17 @@ static int sci_init_single(struct platform_device *dev, /* The SCI generates several interrupts. They can be muxed together or * connected to different interrupt lines. In the muxed case only one - * interrupt resource is specified. In the non-muxed case three or four - * interrupt resources are specified, as the BRI interrupt is optional. + * interrupt resource is specified as there is only one interrupt ID. + * In the non-muxed case, up to 6 interrupt signals might be generated + * from the SCI, however those signals might have their own individual + * interrupt ID numbers, or muxed together with another interrupt. */ if (sci_port->irqs[0] < 0) return -ENXIO; - if (sci_port->irqs[1] < 0) { - sci_port->irqs[1] = sci_port->irqs[0]; - sci_port->irqs[2] = sci_port->irqs[0]; - sci_port->irqs[3] = sci_port->irqs[0]; - } + if (sci_port->irqs[1] < 0) + for (i = 1; i < ARRAY_SIZE(sci_port->irqs) - 1; i++) + sci_port->irqs[i] = sci_port->irqs[0]; sci_port->params = sci_probe_regmap(p); if (unlikely(sci_port->params == NULL))