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 v12 06/10] hwmon: sy7636a: Add temperature driver for sy7636a Date: Sat, 9 Oct 2021 21:50:28 +1000 [thread overview] Message-ID: <20211009115031.18392-10-alistair@alistair23.me> (raw) In-Reply-To: <20211009115031.18392-1-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> --- arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/hwmon/Kconfig | 10 ++++ drivers/hwmon/Makefile | 1 + drivers/hwmon/sy7636a-hwmon.c | 77 ++++++++++++++++++++++++++++ 4 files changed, 89 insertions(+) create mode 100644 drivers/hwmon/sy7636a-hwmon.c diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index 8a54a4d0181a..b87adf823e44 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -228,6 +228,7 @@ CONFIG_RN5T618_POWER=m CONFIG_SENSORS_MC13783_ADC=y CONFIG_SENSORS_GPIO_FAN=y CONFIG_SENSORS_IIO_HWMON=y +CONFIG_SENSORS_SY7636A=y CONFIG_THERMAL_STATISTICS=y CONFIG_THERMAL_WRITABLE_TRIPS=y CONFIG_CPU_THERMAL=y diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index c4578e8f34bb..59f358293202 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1651,6 +1651,16 @@ 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" + depends on I2C + 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..e0204278339b --- /dev/null +++ b/drivers/hwmon/sy7636a-hwmon.c @@ -0,0 +1,77 @@ +// 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/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/err.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_groups(&pdev->dev, + "sy7636a_temperature", regmap, sy7636a_groups); + + if (IS_ERR(hwmon_dev)) { + err = PTR_ERR(hwmon_dev); + dev_err(&pdev->dev, "Unable to register hwmon device, returned %d", 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 v12 06/10] hwmon: sy7636a: Add temperature driver for sy7636a Date: Sat, 9 Oct 2021 21:50:28 +1000 [thread overview] Message-ID: <20211009115031.18392-10-alistair@alistair23.me> (raw) In-Reply-To: <20211009115031.18392-1-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> --- arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/hwmon/Kconfig | 10 ++++ drivers/hwmon/Makefile | 1 + drivers/hwmon/sy7636a-hwmon.c | 77 ++++++++++++++++++++++++++++ 4 files changed, 89 insertions(+) create mode 100644 drivers/hwmon/sy7636a-hwmon.c diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig index 8a54a4d0181a..b87adf823e44 100644 --- a/arch/arm/configs/imx_v6_v7_defconfig +++ b/arch/arm/configs/imx_v6_v7_defconfig @@ -228,6 +228,7 @@ CONFIG_RN5T618_POWER=m CONFIG_SENSORS_MC13783_ADC=y CONFIG_SENSORS_GPIO_FAN=y CONFIG_SENSORS_IIO_HWMON=y +CONFIG_SENSORS_SY7636A=y CONFIG_THERMAL_STATISTICS=y CONFIG_THERMAL_WRITABLE_TRIPS=y CONFIG_CPU_THERMAL=y diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index c4578e8f34bb..59f358293202 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1651,6 +1651,16 @@ 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" + depends on I2C + 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..e0204278339b --- /dev/null +++ b/drivers/hwmon/sy7636a-hwmon.c @@ -0,0 +1,77 @@ +// 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/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/err.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_groups(&pdev->dev, + "sy7636a_temperature", regmap, sy7636a_groups); + + if (IS_ERR(hwmon_dev)) { + err = PTR_ERR(hwmon_dev); + dev_err(&pdev->dev, "Unable to register hwmon device, returned %d", 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:[~2021-10-09 11:51 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-09 11:50 [PATCH v12 00/10] Add support for the silergy,sy7636a Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:50 ` [PATCH v12 01/10] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml Alistair Francis 2021-10-09 11:50 ` [PATCH v12 01/10] dt-bindings: mfd: Initial commit of silergy, sy7636a.yaml Alistair Francis 2021-10-09 11:50 ` [PATCH v12 02/10] mfd: simple-mfd-i2c: Add a Kconfig name Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:50 ` [PATCH 3/7] capsules: symmetric_encryption/aes: Reduce code size Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:55 ` Alistair Francis 2021-10-09 11:55 ` Alistair Francis 2021-10-09 11:50 ` [PATCH v12 03/10] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Alistair Francis 2021-10-09 11:50 ` [PATCH v12 03/10] mfd: simple-mfd-i2c: Enable support for the silergy, sy7636a Alistair Francis 2021-10-09 11:50 ` [PATCH 4/7] capsules: sha: Continue reducing code size Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:56 ` Alistair Francis 2021-10-09 11:56 ` Alistair Francis 2021-10-09 11:50 ` [PATCH v12 04/10] regulator: sy7636a: Remove requirement on sy7636a mfd Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:50 ` [PATCH 5/7] capsules: hmac: Continue reducing code size Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:56 ` Alistair Francis 2021-10-09 11:56 ` Alistair Francis 2021-10-09 11:50 ` [PATCH v12 05/10] thermal: sy7636a: Add thermal driver for sy7636a Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 23:49 ` Guenter Roeck 2021-10-09 23:49 ` Guenter Roeck 2021-10-09 11:50 ` Alistair Francis [this message] 2021-10-09 11:50 ` [PATCH v12 06/10] hwmon: sy7636a: Add temperature " Alistair Francis 2021-10-09 13:49 ` Guenter Roeck 2021-10-09 13:49 ` Guenter Roeck 2021-10-09 11:50 ` [PATCH v12 07/10] ARM: imx_v6_v7_defconfig: Enable silergy,sy7636a Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 11:50 ` [PATCH v12 08/10] ARM: dts: imx7d: remarkable2: " Alistair Francis 2021-10-09 11:50 ` [PATCH v12 08/10] ARM: dts: imx7d: remarkable2: Enable silergy, sy7636a Alistair Francis 2021-10-09 11:50 ` [PATCH v12 09/10] ARM: imx_v6_v7_defconfig: Enable backlight class devices Alistair Francis 2021-10-09 11:50 ` Alistair Francis 2021-10-09 14:29 ` Fabio Estevam 2021-10-09 14:29 ` Fabio Estevam
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