From: Alistair Francis <alistair@alistair23.me> To: lee.jones@linaro.org, robh+dt@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, kernel@pengutronix.de Cc: shawnguo@kernel.org, s.hauer@pengutronix.de, linux-imx@nxp.com, amitk@kernel.org, rui.zhang@intel.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alistair23@gmail.com, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v13 6/9] hwmon: sy7636a: Add temperature driver for sy7636a Date: Fri, 15 Oct 2021 22:25:48 +1000 [thread overview] Message-ID: <20211015122551.38951-7-alistair@alistair23.me> (raw) In-Reply-To: <20211015122551.38951-1-alistair@alistair23.me> This is a multi-function device to interface with the sy7636a EPD PMIC chip from Silergy. Signed-off-by: Alistair Francis <alistair@alistair23.me> --- Documentation/hwmon/sy7636a-hwmon.rst | 24 +++++++++ drivers/hwmon/Kconfig | 9 ++++ drivers/hwmon/Makefile | 1 + drivers/hwmon/sy7636a-hwmon.c | 75 +++++++++++++++++++++++++++ 4 files changed, 109 insertions(+) create mode 100644 Documentation/hwmon/sy7636a-hwmon.rst create mode 100644 drivers/hwmon/sy7636a-hwmon.c diff --git a/Documentation/hwmon/sy7636a-hwmon.rst b/Documentation/hwmon/sy7636a-hwmon.rst new file mode 100644 index 000000000000..6b3e36d028dd --- /dev/null +++ b/Documentation/hwmon/sy7636a-hwmon.rst @@ -0,0 +1,24 @@ +Kernel driver sy7636a-hwmon +========================= + +Supported chips: + + * Silergy SY7636A PMIC + + +Description +----------- + +This driver adds hardware temperature reading support for +the Silergy SY7636A PMIC. + +The following sensors are supported + + * Temperature + - SoC on-die temperature in milli-degree C + +sysfs-Interface +--------------- + +temp0_input + - SoC on-die temperature (milli-degree C) diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index c4578e8f34bb..d768b833b721 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1651,6 +1651,15 @@ config SENSORS_SIS5595 This driver can also be built as a module. If so, the module will be called sis5595. +config SENSORS_SY7636A + tristate "Silergy SY7636A" + help + If you say yes here you get support for the thermistor readout of + the Silergy SY7636A PMIC. + + This driver can also be built as a module. If so, the module + will be called sy7636a-hwmon. + config SENSORS_DME1737 tristate "SMSC DME1737, SCH311x and compatibles" depends on I2C && !PPC diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 162940270661..1355ffdb1481 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -181,6 +181,7 @@ obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o obj-$(CONFIG_SENSORS_SPARX5) += sparx5-temp.o obj-$(CONFIG_SENSORS_STTS751) += stts751.o +obj-$(CONFIG_SENSORS_SY7636A) += sy7636a-hwmon.o obj-$(CONFIG_SENSORS_AMC6821) += amc6821.o obj-$(CONFIG_SENSORS_TC74) += tc74.o obj-$(CONFIG_SENSORS_THMC50) += thmc50.o diff --git a/drivers/hwmon/sy7636a-hwmon.c b/drivers/hwmon/sy7636a-hwmon.c new file mode 100644 index 000000000000..a59628f87ff3 --- /dev/null +++ b/drivers/hwmon/sy7636a-hwmon.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Functions to access SY3686A power management chip temperature + * + * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/ + * + * Authors: Lars Ivar Miljeteig <lars.ivar.miljeteig@remarkable.com> + * Alistair Francis <alistair@alistair23.me> + */ + +#include <linux/err.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/sysfs.h> +#include <linux/platform_device.h> + +#include <linux/mfd/sy7636a.h> + +static ssize_t show_temp(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned int reg_val; + struct regmap *regmap = dev_get_drvdata(dev); + int ret; + + ret = regmap_read(regmap, SY7636A_REG_TERMISTOR_READOUT, ®_val); + if (ret) + return ret; + + return snprintf(buf, PAGE_SIZE, "%d\n", reg_val); +} + +static SENSOR_DEVICE_ATTR(temp0, 0444, show_temp, NULL, 0); + +static struct attribute *sy7636a_attrs[] = { + &sensor_dev_attr_temp0.dev_attr.attr, + NULL +}; + +ATTRIBUTE_GROUPS(sy7636a); + +static int sy7636a_sensor_probe(struct platform_device *pdev) +{ + struct regmap *regmap = dev_get_regmap(pdev->dev.parent, NULL); + struct device *hwmon_dev; + int err; + + if (!regmap) + return -EPROBE_DEFER; + + hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev, + "sy7636a_temperature", regmap, NULL, sy7636a_groups); + + if (IS_ERR(hwmon_dev)) { + err = PTR_ERR(hwmon_dev); + dev_err(&pdev->dev, "Unable to register hwmon device, returned %d\n", err); + return err; + } + + return 0; +} + +static struct platform_driver sy7636a_sensor_driver = { + .probe = sy7636a_sensor_probe, + .driver = { + .name = "sy7636a-temperature", + }, +}; +module_platform_driver(sy7636a_sensor_driver); + +MODULE_DESCRIPTION("SY7636A sensor driver"); +MODULE_LICENSE("GPL"); -- 2.31.1
WARNING: multiple messages have this Message-ID (diff)
From: Alistair Francis <alistair@alistair23.me> To: lee.jones@linaro.org, robh+dt@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, kernel@pengutronix.de Cc: shawnguo@kernel.org, s.hauer@pengutronix.de, linux-imx@nxp.com, amitk@kernel.org, rui.zhang@intel.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alistair23@gmail.com, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, Alistair Francis <alistair@alistair23.me> Subject: [PATCH v13 6/9] hwmon: sy7636a: Add temperature driver for sy7636a Date: Fri, 15 Oct 2021 22:25:48 +1000 [thread overview] Message-ID: <20211015122551.38951-7-alistair@alistair23.me> (raw) In-Reply-To: <20211015122551.38951-1-alistair@alistair23.me> This is a multi-function device to interface with the sy7636a EPD PMIC chip from Silergy. Signed-off-by: Alistair Francis <alistair@alistair23.me> --- Documentation/hwmon/sy7636a-hwmon.rst | 24 +++++++++ drivers/hwmon/Kconfig | 9 ++++ drivers/hwmon/Makefile | 1 + drivers/hwmon/sy7636a-hwmon.c | 75 +++++++++++++++++++++++++++ 4 files changed, 109 insertions(+) create mode 100644 Documentation/hwmon/sy7636a-hwmon.rst create mode 100644 drivers/hwmon/sy7636a-hwmon.c diff --git a/Documentation/hwmon/sy7636a-hwmon.rst b/Documentation/hwmon/sy7636a-hwmon.rst new file mode 100644 index 000000000000..6b3e36d028dd --- /dev/null +++ b/Documentation/hwmon/sy7636a-hwmon.rst @@ -0,0 +1,24 @@ +Kernel driver sy7636a-hwmon +========================= + +Supported chips: + + * Silergy SY7636A PMIC + + +Description +----------- + +This driver adds hardware temperature reading support for +the Silergy SY7636A PMIC. + +The following sensors are supported + + * Temperature + - SoC on-die temperature in milli-degree C + +sysfs-Interface +--------------- + +temp0_input + - SoC on-die temperature (milli-degree C) diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index c4578e8f34bb..d768b833b721 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1651,6 +1651,15 @@ config SENSORS_SIS5595 This driver can also be built as a module. If so, the module will be called sis5595. +config SENSORS_SY7636A + tristate "Silergy SY7636A" + help + If you say yes here you get support for the thermistor readout of + the Silergy SY7636A PMIC. + + This driver can also be built as a module. If so, the module + will be called sy7636a-hwmon. + config SENSORS_DME1737 tristate "SMSC DME1737, SCH311x and compatibles" depends on I2C && !PPC diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 162940270661..1355ffdb1481 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -181,6 +181,7 @@ obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o obj-$(CONFIG_SENSORS_SPARX5) += sparx5-temp.o obj-$(CONFIG_SENSORS_STTS751) += stts751.o +obj-$(CONFIG_SENSORS_SY7636A) += sy7636a-hwmon.o obj-$(CONFIG_SENSORS_AMC6821) += amc6821.o obj-$(CONFIG_SENSORS_TC74) += tc74.o obj-$(CONFIG_SENSORS_THMC50) += thmc50.o diff --git a/drivers/hwmon/sy7636a-hwmon.c b/drivers/hwmon/sy7636a-hwmon.c new file mode 100644 index 000000000000..a59628f87ff3 --- /dev/null +++ b/drivers/hwmon/sy7636a-hwmon.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Functions to access SY3686A power management chip temperature + * + * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/ + * + * Authors: Lars Ivar Miljeteig <lars.ivar.miljeteig@remarkable.com> + * Alistair Francis <alistair@alistair23.me> + */ + +#include <linux/err.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/sysfs.h> +#include <linux/platform_device.h> + +#include <linux/mfd/sy7636a.h> + +static ssize_t show_temp(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned int reg_val; + struct regmap *regmap = dev_get_drvdata(dev); + int ret; + + ret = regmap_read(regmap, SY7636A_REG_TERMISTOR_READOUT, ®_val); + if (ret) + return ret; + + return snprintf(buf, PAGE_SIZE, "%d\n", reg_val); +} + +static SENSOR_DEVICE_ATTR(temp0, 0444, show_temp, NULL, 0); + +static struct attribute *sy7636a_attrs[] = { + &sensor_dev_attr_temp0.dev_attr.attr, + NULL +}; + +ATTRIBUTE_GROUPS(sy7636a); + +static int sy7636a_sensor_probe(struct platform_device *pdev) +{ + struct regmap *regmap = dev_get_regmap(pdev->dev.parent, NULL); + struct device *hwmon_dev; + int err; + + if (!regmap) + return -EPROBE_DEFER; + + hwmon_dev = devm_hwmon_device_register_with_info(&pdev->dev, + "sy7636a_temperature", regmap, NULL, sy7636a_groups); + + if (IS_ERR(hwmon_dev)) { + err = PTR_ERR(hwmon_dev); + dev_err(&pdev->dev, "Unable to register hwmon device, returned %d\n", err); + return err; + } + + return 0; +} + +static struct platform_driver sy7636a_sensor_driver = { + .probe = sy7636a_sensor_probe, + .driver = { + .name = "sy7636a-temperature", + }, +}; +module_platform_driver(sy7636a_sensor_driver); + +MODULE_DESCRIPTION("SY7636A sensor driver"); +MODULE_LICENSE("GPL"); -- 2.31.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-10-15 12:26 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-15 12:25 [PATCH v13 0/9] Add support for the silergy,sy7636a Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-15 12:25 ` [PATCH v13 1/9] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml Alistair Francis 2021-10-15 12:25 ` [PATCH v13 1/9] dt-bindings: mfd: Initial commit of silergy, sy7636a.yaml Alistair Francis 2021-10-22 10:30 ` [PATCH v13 1/9] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml Lee Jones 2021-10-22 10:30 ` Lee Jones 2021-10-15 12:25 ` [PATCH v13 2/9] mfd: simple-mfd-i2c: Add a Kconfig name Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-22 10:30 ` Lee Jones 2021-10-22 10:30 ` Lee Jones 2021-10-15 12:25 ` [PATCH v13 3/9] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Alistair Francis 2021-10-15 12:25 ` [PATCH v13 3/9] mfd: simple-mfd-i2c: Enable support for the silergy, sy7636a Alistair Francis 2021-10-21 11:27 ` [PATCH v13 3/9] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Lee Jones 2021-10-21 11:27 ` Lee Jones 2021-10-15 12:25 ` [PATCH v13 4/9] regulator: sy7636a: Remove requirement on sy7636a mfd Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-15 12:25 ` [PATCH v13 5/9] thermal: sy7636a: Add thermal driver for sy7636a Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-16 10:32 ` Daniel Lezcano 2021-10-16 10:32 ` Daniel Lezcano 2021-10-15 12:25 ` Alistair Francis [this message] 2021-10-15 12:25 ` [PATCH v13 6/9] hwmon: sy7636a: Add temperature " Alistair Francis 2021-10-15 14:12 ` Guenter Roeck 2021-10-15 14:12 ` Guenter Roeck 2021-10-15 12:25 ` [PATCH v13 7/9] ARM: imx_v6_v7_defconfig: Enable silergy,sy7636a Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-15 12:25 ` [PATCH v13 8/9] ARM: dts: imx7d: remarkable2: " Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-15 12:25 ` [PATCH v13 9/9] ARM: dts: imx7d: remarkable2: Enable lcdif Alistair Francis 2021-10-15 12:25 ` Alistair Francis 2021-10-22 0:52 ` (subset) [PATCH v13 0/9] Add support for the silergy,sy7636a Mark Brown 2021-10-22 0:52 ` Mark Brown
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20211015122551.38951-7-alistair@alistair23.me \ --to=alistair@alistair23.me \ --cc=alistair23@gmail.com \ --cc=amitk@kernel.org \ --cc=broonie@kernel.org \ --cc=devicetree@vger.kernel.org \ --cc=kernel@pengutronix.de \ --cc=lee.jones@linaro.org \ --cc=lgirdwood@gmail.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-hwmon@vger.kernel.org \ --cc=linux-imx@nxp.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-pm@vger.kernel.org \ --cc=robh+dt@kernel.org \ --cc=rui.zhang@intel.com \ --cc=s.hauer@pengutronix.de \ --cc=shawnguo@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.