From patchwork Tue Mar 17 20:49:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 11443955 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E1AA1159A for ; Tue, 17 Mar 2020 20:50:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6EC72075E for ; Tue, 17 Mar 2020 20:50:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=walle.cc header.i=@walle.cc header.b="qce08iWX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726680AbgCQUuv (ORCPT ); Tue, 17 Mar 2020 16:50:51 -0400 Received: from ssl.serverraum.org ([176.9.125.105]:57217 "EHLO ssl.serverraum.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726388AbgCQUuv (ORCPT ); Tue, 17 Mar 2020 16:50:51 -0400 Received: from apollo.fritz.box (unknown [IPv6:2a02:810c:c200:2e91:6257:18ff:fec4:ca34]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 0D1DA23E3C; Tue, 17 Mar 2020 21:50:44 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1584478246; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=9s1oQ4jq4pc56CEahZRpEbRnFk8T32v+b2fT2eRreEE=; b=qce08iWXtRajtnoSLXDjM1QKGpUAFHSDUgGSEcHGW3Cj/PC34Uaf4/Vo5xxlHtQ8P6BNYg lEHg2dwzb2isgJtP0nuBHmcX3ASQiJeZI0CBXD8U3ZTPh7fb/MXg0ksEIlJD3bFFu3dKEM DpgRvvwPFbSDcOfN9eADOSPG9Xbhg6U= From: Michael Walle To: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-pwm@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Linus Walleij , Bartosz Golaszewski , Rob Herring , Jean Delvare , Guenter Roeck , Lee Jones , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Wim Van Sebroeck , Shawn Guo , Li Yang , Thomas Gleixner , Jason Cooper , Marc Zyngier , Michael Walle Subject: [PATCH 00/18] Add support for Kontron sl28cpld Date: Tue, 17 Mar 2020 21:49:59 +0100 Message-Id: <20200317205017.28280-1-michael@walle.cc> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Spamd-Bar: ++++++ X-Spam-Level: ****** X-Rspamd-Server: web X-Spam-Status: Yes, score=6.40 X-Spam-Score: 6.40 X-Rspamd-Queue-Id: 0D1DA23E3C X-Spamd-Result: default: False [6.40 / 15.00]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TAGGED_RCPT(0.00)[dt]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM(0.00)[0.662]; DKIM_SIGNED(0.00)[]; DBL_PROHIBIT(0.00)[0.0.0.1:email,0.0.0.0:email]; RCPT_COUNT_TWELVE(0.00)[22]; MID_CONTAINS_FROM(1.00)[]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:31334, ipnet:2a02:810c:8000::/33, country:DE]; FREEMAIL_CC(0.00)[linaro.org,baylibre.com,kernel.org,suse.com,roeck-us.net,gmail.com,pengutronix.de,linux-watchdog.org,nxp.com,linutronix.de,lakedaemon.net,walle.cc]; SUSPICIOUS_RECIPS(1.50)[] X-Spam: Yes Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org The Kontron sl28cpld is a board management chip providing gpio, pwm, fan monitoring and an interrupt controller. For now this controller is used on the Kontron SMARC-sAL28 board. But because of its flexible nature, it might also be used on other boards in the future. The individual blocks (like gpio, pwm, etc) are kept intentionally small. The MFD core driver then instantiates different (or multiple of the same) blocks. It also provides the register layout so it might be updated in the future without a device tree change; and support other boards with a different layout or functionalities. See also [1] for more information. There is one problem though: Documentation/devicetree/bindings/mfd/kontron,sl28cpld.example.dts:32.24-41.19: Warning (unique_unit_address): /example-0/i2c/sl28cpld@4a/gpio@0: duplicate unit-address (also used in node /example-0/i2c/sl28cpld@4a/pwm@0) Documentation/devicetree/bindings/mfd/kontron,sl28cpld.example.dts:43.24-52.19: Warning (unique_unit_address): /example-0/i2c/sl28cpld@4a/gpio@1: duplicate unit-address (also used in node /example-0/i2c/sl28cpld@4a/pwm@1) This is because the reg property is used to match multiple MFD cells which has the same devicetree compatible string. See patch 3. So only the (reg, compatible string) is unique. Maybe I should use a different property but reg? This is my first take of a MFD driver. I don't know wether the subsystem maintainers should only be CCed on the patches which affect the subsystem or on all patches for this series. I've chosen the latter so you can get a more complete picture. [1] https://lore.kernel.org/linux-devicetree/0e3e8204ab992d75aa07fc36af7e4ab2@walle.cc/ Michael Walle (18): include/linux/ioport.h: add helper to define REG resource constructs mfd: mfd-core: Don't overwrite the dma_mask of the child device mfd: mfd-core: match device tree node against reg property dt-bindings: mfd: Add bindings for sl28cpld mfd: Add support for Kontron sl28cpld management controller irqchip: add sl28cpld interrupt controller support dt-bindings: watchdog: Add bindings for sl28cpld watchdog watchdog: add support for sl28cpld watchdog dt-bindings: pwm: Add bindings for sl28cpld PWM controller pwm: add support for sl28cpld PWM controller dt-bindings: gpio: Add bindings for sl28cpld GPIO controller gpio: add support for the sl28cpld GPIO controller dt-bindings: hwmon: Add bindings for sl28cpld hardware monitoring hwmon: add support for the sl28cpld hardware monitoring controller arm64: dts: freescale: sl28: enable sl28cpld arm64: dts: freescale: sl28: map GPIOs to input events arm64: dts: freescale: sl28: enable LED support arm64: dts: freescale: sl28: enable fan support .../bindings/gpio/kontron,sl28cpld-gpio.yaml | 52 +++ .../hwmon/kontron,sl28cpld-hwmon.yaml | 28 ++ .../bindings/mfd/kontron,sl28cpld.yaml | 146 ++++++++ .../bindings/pwm/kontron,sl28cpld-pwm.yaml | 33 ++ .../watchdog/kontron,sl28cpld-wdt.yaml | 30 ++ .../fsl-ls1028a-kontron-kbox-a-230-ls.dts | 14 + .../fsl-ls1028a-kontron-sl28-var3-ads2.dts | 9 + .../freescale/fsl-ls1028a-kontron-sl28.dts | 119 +++++++ drivers/gpio/Kconfig | 11 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-sl28cpld.c | 332 ++++++++++++++++++ drivers/hwmon/Kconfig | 10 + drivers/hwmon/Makefile | 1 + drivers/hwmon/sl28cpld-hwmon.c | 146 ++++++++ drivers/irqchip/Kconfig | 3 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-sl28cpld.c | 92 +++++ drivers/mfd/Kconfig | 21 ++ drivers/mfd/Makefile | 2 + drivers/mfd/mfd-core.c | 28 +- drivers/mfd/sl28cpld.c | 155 ++++++++ drivers/pwm/Kconfig | 10 + drivers/pwm/Makefile | 1 + drivers/pwm/pwm-sl28cpld.c | 192 ++++++++++ drivers/watchdog/Kconfig | 11 + drivers/watchdog/Makefile | 1 + drivers/watchdog/sl28cpld_wdt.c | 238 +++++++++++++ include/linux/ioport.h | 5 + 28 files changed, 1682 insertions(+), 10 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml create mode 100644 Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml create mode 100644 Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml create mode 100644 Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml create mode 100644 Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml create mode 100644 drivers/gpio/gpio-sl28cpld.c create mode 100644 drivers/hwmon/sl28cpld-hwmon.c create mode 100644 drivers/irqchip/irq-sl28cpld.c create mode 100644 drivers/mfd/sl28cpld.c create mode 100644 drivers/pwm/pwm-sl28cpld.c create mode 100644 drivers/watchdog/sl28cpld_wdt.c