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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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200317_135050_307542_046FDBF2 X-CRM114-Status: GOOD ( 17.47 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [2a01:4f8:151:8464:0:0:1:2 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marc Zyngier , Jean Delvare , Jason Cooper , Shawn Guo , Linus Walleij , Li Yang , Bartosz Golaszewski , Michael Walle , Rob Herring , Thierry Reding , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Thomas Gleixner , Wim Van Sebroeck , Lee Jones , Guenter Roeck Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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