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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-12-23 17:25:19 +0100 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-12-24 18:49:49 +0100 |
commit | c2308a7e4adbb2acc8ff149f91d1ca46801c135e (patch) | |
tree | ffc720dc7c05c331d6569fc3c2f0772fb375e419 /target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch | |
parent | 67dcc43f3a22dc3a7ac07a7065971b426feeb043 (diff) | |
download | upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.tar.gz upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.tar.bz2 upstream-c2308a7e4adbb2acc8ff149f91d1ca46801c135e.zip |
brcm2708: update to latest patches from RPi Foundation
Also removes reverted patches.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch | 682 |
1 files changed, 0 insertions, 682 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch b/target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch deleted file mode 100644 index b393306408..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0133-Add-rpi-poe-fan-driver.patch +++ /dev/null @@ -1,682 +0,0 @@ -From e6528f67b96f52ea77d95a59e75d8270bb53aade Mon Sep 17 00:00:00 2001 -From: Serge Schneider <serge@raspberrypi.org> -Date: Mon, 9 Jul 2018 12:54:25 +0100 -Subject: [PATCH] Add rpi-poe-fan driver - -Signed-off-by: Serge Schneider <serge@raspberrypi.org> - -PoE HAT driver cleanup - -* Fix undeclared variable in rpi_poe_fan_suspend -* Add SPDX-License-Identifier -* Expand PoE acronym in Kconfig help -* Give clearer error message on of_property_count_u32_elems fail -* Add documentation -* Add vendor to of_device_id compatible string. -* Rename m_data_s struct to fw_data_s -* Fix typos - -Fixes: #2665 - -Signed-off-by: Serge Schneider <serge@raspberrypi.org> ---- - .../devicetree/bindings/hwmon/rpi-poe-fan.txt | 55 +++ - Documentation/hwmon/rpi-poe-fan | 15 + - arch/arm/boot/dts/overlays/Makefile | 1 + - arch/arm/boot/dts/overlays/README | 6 + - .../arm/boot/dts/overlays/rpi-poe-overlay.dts | 61 +++ - drivers/hwmon/Kconfig | 11 + - drivers/hwmon/Makefile | 1 + - drivers/hwmon/rpi-poe-fan.c | 436 ++++++++++++++++++ - include/soc/bcm2835/raspberrypi-firmware.h | 2 + - 11 files changed, 590 insertions(+) - create mode 100644 Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt - create mode 100644 Documentation/hwmon/rpi-poe-fan - create mode 100644 arch/arm/boot/dts/overlays/rpi-poe-overlay.dts - create mode 100644 drivers/hwmon/rpi-poe-fan.c - ---- /dev/null -+++ b/Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt -@@ -0,0 +1,55 @@ -+Bindings for the Raspberry Pi PoE HAT fan -+ -+Required properties: -+- compatible : "raspberrypi,rpi-poe-fan" -+- firmware : Reference to the RPi firmware device node -+- pwms : the PWM that is used to control the PWM fan -+- cooling-levels : PWM duty cycle values in a range from 0 to 255 -+ which correspond to thermal cooling states -+ -+Example: -+ fan0: rpi-poe-fan@0 { -+ compatible = "raspberrypi,rpi-poe-fan"; -+ firmware = <&firmware>; -+ cooling-min-state = <0>; -+ cooling-max-state = <3>; -+ #cooling-cells = <2>; -+ cooling-levels = <0 50 150 255>; -+ status = "okay"; -+ }; -+ -+ thermal-zones { -+ cpu_thermal: cpu-thermal { -+ trips { -+ threshold: trip-point@0 { -+ temperature = <45000>; -+ hysteresis = <5000>; -+ type = "active"; -+ }; -+ target: trip-point@1 { -+ temperature = <50000>; -+ hysteresis = <2000>; -+ type = "active"; -+ }; -+ cpu_hot: cpu_hot@0 { -+ temperature = <55000>; -+ hysteresis = <2000>; -+ type = "active"; -+ }; -+ }; -+ cooling-maps { -+ map0 { -+ trip = <&threshold>; -+ cooling-device = <&fan0 0 1>; -+ }; -+ map1 { -+ trip = <&target>; -+ cooling-device = <&fan0 1 2>; -+ }; -+ map2 { -+ trip = <&cpu_hot>; -+ cooling-device = <&fan0 2 3>; -+ }; -+ }; -+ }; -+ }; ---- /dev/null -+++ b/Documentation/hwmon/rpi-poe-fan -@@ -0,0 +1,15 @@ -+Kernel driver rpi-poe-fan -+===================== -+ -+This driver enables the use of the Raspberry Pi PoE HAT fan. -+ -+Author: Serge Schneider <serge@raspberrypi.org> -+ -+Description -+----------- -+ -+The driver implements a simple interface for driving the Raspberry Pi PoE -+(Power over Ethernet) HAT fan. The driver passes commands to the Raspberry Pi -+firmware through the mailbox property interface. The firmware then forwards -+the commands to the board over I2C on the ID_EEPROM pins. The driver exposes -+the fan to the user space through the hwmon sysfs interface. ---- a/arch/arm/boot/dts/overlays/Makefile -+++ b/arch/arm/boot/dts/overlays/Makefile -@@ -100,6 +100,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ - rpi-dac.dtbo \ - rpi-display.dtbo \ - rpi-ft5406.dtbo \ -+ rpi-poe.dtbo \ - rpi-proto.dtbo \ - rpi-sense.dtbo \ - rpi-tv.dtbo \ ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -1515,6 +1515,12 @@ Params: touchscreen-size-x Touchscr - touchscreen-swapped-x-y Swap X and Y cordinates (default 0); - - -+Name: rpi-poe -+Info: Raspberry Pi POE HAT -+Load: dtoverlay=rpi-poe -+Params: <None> -+ -+ - Name: rpi-proto - Info: Configures the RPi Proto audio card - Load: dtoverlay=rpi-proto ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts -@@ -0,0 +1,61 @@ -+/* -+ * Overlay for the Raspberry Pi POE HAT. -+ */ -+/dts-v1/; -+/plugin/; -+ -+/ { -+ compatible = "brcm,bcm2708"; -+ -+ fragment@0 { -+ target-path = "/"; -+ __overlay__ { -+ fan0: rpi-poe-fan@0 { -+ compatible = "raspberrypi,rpi-poe-fan"; -+ firmware = <&firmware>; -+ cooling-min-state = <0>; -+ cooling-max-state = <3>; -+ #cooling-cells = <2>; -+ cooling-levels = <0 50 150 255>; -+ status = "okay"; -+ }; -+ }; -+ }; -+ -+ fragment@1 { -+ target = <&cpu_thermal>; -+ __overlay__ { -+ trips { -+ threshold: trip-point@0 { -+ temperature = <45000>; -+ hysteresis = <5000>; -+ type = "active"; -+ }; -+ target: trip-point@1 { -+ temperature = <50000>; -+ hysteresis = <2000>; -+ type = "active"; -+ }; -+ cpu_hot: cpu_hot@0 { -+ temperature = <55000>; -+ hysteresis = <2000>; -+ type = "active"; -+ }; -+ }; -+ cooling-maps { -+ map0 { -+ trip = <&threshold>; -+ cooling-device = <&fan0 0 1>; -+ }; -+ map1 { -+ trip = <&target>; -+ cooling-device = <&fan0 1 2>; -+ }; -+ map2 { -+ trip = <&cpu_hot>; -+ cooling-device = <&fan0 2 3>; -+ }; -+ }; -+ }; -+ }; -+}; ---- a/drivers/hwmon/Kconfig -+++ b/drivers/hwmon/Kconfig -@@ -1330,6 +1330,17 @@ config SENSORS_RASPBERRYPI_HWMON - This driver can also be built as a module. If so, the module - will be called raspberrypi-hwmon. - -+config SENSORS_RPI_POE_FAN -+ tristate "Raspberry Pi PoE HAT fan" -+ depends on RASPBERRYPI_FIRMWARE -+ depends on THERMAL || THERMAL=n -+ help -+ If you say yes here you get support for Raspberry Pi PoE (Power over -+ Ethernet) HAT fan. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rpi-poe-fan. -+ - config SENSORS_SHT15 - tristate "Sensiron humidity and temperature sensors. SHT15 and compat." - depends on GPIOLIB || COMPILE_TEST ---- a/drivers/hwmon/Makefile -+++ b/drivers/hwmon/Makefile -@@ -144,6 +144,7 @@ obj-$(CONFIG_SENSORS_PCF8591) += pcf8591 - obj-$(CONFIG_SENSORS_POWR1220) += powr1220.o - obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o - obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o -+obj-$(CONFIG_SENSORS_RPI_POE_FAN) += rpi-poe-fan.o - obj-$(CONFIG_SENSORS_S3C) += s3c-hwmon.o - obj-$(CONFIG_SENSORS_SCH56XX_COMMON)+= sch56xx-common.o - obj-$(CONFIG_SENSORS_SCH5627) += sch5627.o ---- /dev/null -+++ b/drivers/hwmon/rpi-poe-fan.c -@@ -0,0 +1,436 @@ -+// SPDX-License-Identifier: GPL-2.0 -+/* -+ * rpi-poe-fan.c - Hwmon driver for Raspberry Pi PoE HAT fan. -+ * -+ * Copyright (C) 2018 Raspberry Pi (Trading) Ltd. -+ * Based on pwm-fan.c by Kamil Debski <k.debski@samsung.com> -+ * -+ * Author: Serge Schneider <serge@raspberrypi.org> -+ */ -+ -+#include <linux/hwmon.h> -+#include <linux/hwmon-sysfs.h> -+#include <linux/module.h> -+#include <linux/mutex.h> -+#include <linux/notifier.h> -+#include <linux/of.h> -+#include <linux/platform_device.h> -+#include <linux/reboot.h> -+#include <linux/sysfs.h> -+#include <linux/thermal.h> -+#include <soc/bcm2835/raspberrypi-firmware.h> -+ -+#define MAX_PWM 255 -+ -+#define POE_CUR_PWM 0x0 -+#define POE_DEF_PWM 0x1 -+ -+struct rpi_poe_fan_ctx { -+ struct mutex lock; -+ struct rpi_firmware *fw; -+ unsigned int pwm_value; -+ unsigned int def_pwm_value; -+ unsigned int rpi_poe_fan_state; -+ unsigned int rpi_poe_fan_max_state; -+ unsigned int *rpi_poe_fan_cooling_levels; -+ struct thermal_cooling_device *cdev; -+ struct notifier_block nb; -+}; -+ -+struct fw_tag_data_s{ -+ u32 reg; -+ u32 val; -+ u32 ret; -+}; -+ -+static int write_reg(struct rpi_firmware *fw, u32 reg, u32 *val){ -+ struct fw_tag_data_s fw_tag_data = { -+ .reg = reg, -+ .val = *val -+ }; -+ int ret; -+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_SET_POE_HAT_VAL, -+ &fw_tag_data, sizeof(fw_tag_data)); -+ if (ret) { -+ return ret; -+ } else if (fw_tag_data.ret) { -+ return -EIO; -+ } -+ return 0; -+} -+ -+static int read_reg(struct rpi_firmware *fw, u32 reg, u32 *val){ -+ struct fw_tag_data_s fw_tag_data = { -+ .reg = reg, -+ }; -+ int ret; -+ ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_POE_HAT_VAL, -+ &fw_tag_data, sizeof(fw_tag_data)); -+ if (ret) { -+ return ret; -+ } else if (fw_tag_data.ret) { -+ return -EIO; -+ } -+ *val = fw_tag_data.val; -+ return 0; -+} -+ -+static int rpi_poe_reboot(struct notifier_block *nb, unsigned long code, -+ void *unused) -+{ -+ struct rpi_poe_fan_ctx *ctx = container_of(nb, struct rpi_poe_fan_ctx, -+ nb); -+ -+ if (ctx->pwm_value != ctx->def_pwm_value) -+ write_reg(ctx->fw, POE_CUR_PWM, &ctx->def_pwm_value); -+ -+ return NOTIFY_DONE; -+} -+ -+static int __set_pwm(struct rpi_poe_fan_ctx *ctx, u32 pwm) -+{ -+ int ret = 0; -+ -+ mutex_lock(&ctx->lock); -+ if (ctx->pwm_value == pwm) -+ goto exit_set_pwm_err; -+ -+ ret = write_reg(ctx->fw, POE_CUR_PWM, &pwm); -+ if (!ret) -+ ctx->pwm_value = pwm; -+exit_set_pwm_err: -+ mutex_unlock(&ctx->lock); -+ return ret; -+} -+ -+static int __set_def_pwm(struct rpi_poe_fan_ctx *ctx, u32 def_pwm) -+{ -+ int ret = 0; -+ mutex_lock(&ctx->lock); -+ if (ctx->def_pwm_value == def_pwm) -+ goto exit_set_def_pwm_err; -+ -+ ret = write_reg(ctx->fw, POE_CUR_PWM, &def_pwm); -+ if (!ret) -+ ctx->def_pwm_value = def_pwm; -+exit_set_def_pwm_err: -+ mutex_unlock(&ctx->lock); -+ return ret; -+} -+ -+static void rpi_poe_fan_update_state(struct rpi_poe_fan_ctx *ctx, -+ unsigned long pwm) -+{ -+ int i; -+ -+ for (i = 0; i < ctx->rpi_poe_fan_max_state; ++i) -+ if (pwm < ctx->rpi_poe_fan_cooling_levels[i + 1]) -+ break; -+ -+ ctx->rpi_poe_fan_state = i; -+} -+ -+static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ unsigned long pwm; -+ int ret; -+ -+ if (kstrtoul(buf, 10, &pwm) || pwm > MAX_PWM) -+ return -EINVAL; -+ -+ ret = __set_pwm(ctx, pwm); -+ if (ret) -+ return ret; -+ -+ rpi_poe_fan_update_state(ctx, pwm); -+ return count; -+} -+ -+static ssize_t set_def_pwm(struct device *dev, struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ unsigned long def_pwm; -+ int ret; -+ -+ if (kstrtoul(buf, 10, &def_pwm) || def_pwm > MAX_PWM) -+ return -EINVAL; -+ -+ ret = __set_def_pwm(ctx, def_pwm); -+ if (ret) -+ return ret; -+ return count; -+} -+ -+static ssize_t show_pwm(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ -+ return sprintf(buf, "%u\n", ctx->pwm_value); -+} -+ -+static ssize_t show_def_pwm(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ -+ return sprintf(buf, "%u\n", ctx->def_pwm_value); -+} -+ -+ -+static SENSOR_DEVICE_ATTR(pwm1, 0644, show_pwm, set_pwm, 0); -+static SENSOR_DEVICE_ATTR(def_pwm1, 0644, show_def_pwm, set_def_pwm, 1); -+ -+static struct attribute *rpi_poe_fan_attrs[] = { -+ &sensor_dev_attr_pwm1.dev_attr.attr, -+ &sensor_dev_attr_def_pwm1.dev_attr.attr, -+ NULL, -+}; -+ -+ATTRIBUTE_GROUPS(rpi_poe_fan); -+ -+/* thermal cooling device callbacks */ -+static int rpi_poe_fan_get_max_state(struct thermal_cooling_device *cdev, -+ unsigned long *state) -+{ -+ struct rpi_poe_fan_ctx *ctx = cdev->devdata; -+ -+ if (!ctx) -+ return -EINVAL; -+ -+ *state = ctx->rpi_poe_fan_max_state; -+ -+ return 0; -+} -+ -+static int rpi_poe_fan_get_cur_state(struct thermal_cooling_device *cdev, -+ unsigned long *state) -+{ -+ struct rpi_poe_fan_ctx *ctx = cdev->devdata; -+ -+ if (!ctx) -+ return -EINVAL; -+ -+ *state = ctx->rpi_poe_fan_state; -+ -+ return 0; -+} -+ -+static int rpi_poe_fan_set_cur_state(struct thermal_cooling_device *cdev, -+ unsigned long state) -+{ -+ struct rpi_poe_fan_ctx *ctx = cdev->devdata; -+ int ret; -+ -+ if (!ctx || (state > ctx->rpi_poe_fan_max_state)) -+ return -EINVAL; -+ -+ if (state == ctx->rpi_poe_fan_state) -+ return 0; -+ -+ ret = __set_pwm(ctx, ctx->rpi_poe_fan_cooling_levels[state]); -+ if (ret) { -+ dev_err(&cdev->device, "Cannot set pwm!\n"); -+ return ret; -+ } -+ -+ ctx->rpi_poe_fan_state = state; -+ -+ return ret; -+} -+ -+static const struct thermal_cooling_device_ops rpi_poe_fan_cooling_ops = { -+ .get_max_state = rpi_poe_fan_get_max_state, -+ .get_cur_state = rpi_poe_fan_get_cur_state, -+ .set_cur_state = rpi_poe_fan_set_cur_state, -+}; -+ -+static int rpi_poe_fan_of_get_cooling_data(struct device *dev, -+ struct rpi_poe_fan_ctx *ctx) -+{ -+ struct device_node *np = dev->of_node; -+ int num, i, ret; -+ -+ if (!of_find_property(np, "cooling-levels", NULL)) -+ return 0; -+ -+ ret = of_property_count_u32_elems(np, "cooling-levels"); -+ if (ret <= 0) { -+ dev_err(dev, "cooling-levels property missing or invalid: %d\n", -+ ret); -+ return ret ? : -EINVAL; -+ } -+ -+ num = ret; -+ ctx->rpi_poe_fan_cooling_levels = devm_kzalloc(dev, num * sizeof(u32), -+ GFP_KERNEL); -+ if (!ctx->rpi_poe_fan_cooling_levels) -+ return -ENOMEM; -+ -+ ret = of_property_read_u32_array(np, "cooling-levels", -+ ctx->rpi_poe_fan_cooling_levels, num); -+ if (ret) { -+ dev_err(dev, "Property 'cooling-levels' cannot be read!\n"); -+ return ret; -+ } -+ -+ for (i = 0; i < num; i++) { -+ if (ctx->rpi_poe_fan_cooling_levels[i] > MAX_PWM) { -+ dev_err(dev, "PWM fan state[%d]:%d > %d\n", i, -+ ctx->rpi_poe_fan_cooling_levels[i], MAX_PWM); -+ return -EINVAL; -+ } -+ } -+ -+ ctx->rpi_poe_fan_max_state = num - 1; -+ -+ return 0; -+} -+ -+static int rpi_poe_fan_probe(struct platform_device *pdev) -+{ -+ struct thermal_cooling_device *cdev; -+ struct rpi_poe_fan_ctx *ctx; -+ struct device *hwmon; -+ struct device_node *np = pdev->dev.of_node; -+ struct device_node *fw_node; -+ int ret; -+ -+ fw_node = of_parse_phandle(np, "firmware", 0); -+ if (!fw_node) { -+ dev_err(&pdev->dev, "Missing firmware node\n"); -+ return -ENOENT; -+ } -+ -+ ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); -+ if (!ctx) -+ return -ENOMEM; -+ -+ mutex_init(&ctx->lock); -+ -+ ctx->fw = rpi_firmware_get(fw_node); -+ if (!ctx->fw) -+ return -EPROBE_DEFER; -+ -+ platform_set_drvdata(pdev, ctx); -+ -+ ctx->nb.notifier_call = rpi_poe_reboot; -+ ret = register_reboot_notifier(&ctx->nb); -+ if (ret) { -+ dev_err(&pdev->dev, "Failed to register reboot notifier: %i\n", -+ ret); -+ return ret; -+ } -+ ret = read_reg(ctx->fw, POE_DEF_PWM, &ctx->def_pwm_value); -+ if (ret) { -+ dev_err(&pdev->dev, "Failed to get default PWM value: %i\n", -+ ret); -+ goto err; -+ } -+ ret = read_reg(ctx->fw, POE_CUR_PWM, &ctx->pwm_value); -+ if (ret) { -+ dev_err(&pdev->dev, "Failed to get current PWM value: %i\n", -+ ret); -+ goto err; -+ } -+ -+ hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, "rpipoefan", -+ ctx, rpi_poe_fan_groups); -+ if (IS_ERR(hwmon)) { -+ dev_err(&pdev->dev, "Failed to register hwmon device\n"); -+ ret = PTR_ERR(hwmon); -+ goto err; -+ } -+ -+ ret = rpi_poe_fan_of_get_cooling_data(&pdev->dev, ctx); -+ if (ret) -+ return ret; -+ -+ rpi_poe_fan_update_state(ctx, ctx->pwm_value); -+ if (!IS_ENABLED(CONFIG_THERMAL)) -+ return 0; -+ -+ cdev = thermal_of_cooling_device_register(np, -+ "rpi-poe-fan", ctx, -+ &rpi_poe_fan_cooling_ops); -+ if (IS_ERR(cdev)) { -+ dev_err(&pdev->dev, -+ "Failed to register rpi-poe-fan as cooling device"); -+ ret = PTR_ERR(cdev); -+ goto err; -+ } -+ ctx->cdev = cdev; -+ thermal_cdev_update(cdev); -+ -+ return 0; -+err: -+ unregister_reboot_notifier(&ctx->nb); -+ return ret; -+} -+ -+static int rpi_poe_fan_remove(struct platform_device *pdev) -+{ -+ struct rpi_poe_fan_ctx *ctx = platform_get_drvdata(pdev); -+ u32 value = ctx->def_pwm_value; -+ -+ unregister_reboot_notifier(&ctx->nb); -+ thermal_cooling_device_unregister(ctx->cdev); -+ if (ctx->pwm_value != value) { -+ write_reg(ctx->fw, POE_CUR_PWM, &value); -+ } -+ return 0; -+} -+ -+#ifdef CONFIG_PM_SLEEP -+static int rpi_poe_fan_suspend(struct device *dev) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ u32 value = 0; -+ int ret = 0; -+ -+ if (ctx->pwm_value != value) -+ ret = write_reg(ctx->fw, POE_CUR_PWM, &value); -+ return ret; -+} -+ -+static int rpi_poe_fan_resume(struct device *dev) -+{ -+ struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev); -+ u32 value = ctx->pwm_value; -+ int ret = 0; -+ -+ if (value != 0) -+ ret = write_reg(ctx->fw, POE_CUR_PWM, &value); -+ -+ return ret; -+} -+#endif -+ -+static SIMPLE_DEV_PM_OPS(rpi_poe_fan_pm, rpi_poe_fan_suspend, -+ rpi_poe_fan_resume); -+ -+static const struct of_device_id of_rpi_poe_fan_match[] = { -+ { .compatible = "raspberrypi,rpi-poe-fan", }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, of_rpi_poe_fan_match); -+ -+static struct platform_driver rpi_poe_fan_driver = { -+ .probe = rpi_poe_fan_probe, -+ .remove = rpi_poe_fan_remove, -+ .driver = { -+ .name = "rpi-poe-fan", -+ .pm = &rpi_poe_fan_pm, -+ .of_match_table = of_rpi_poe_fan_match, -+ }, -+}; -+ -+module_platform_driver(rpi_poe_fan_driver); -+ -+MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>"); -+MODULE_ALIAS("platform:rpi-poe-fan"); -+MODULE_DESCRIPTION("Raspberry Pi PoE HAT fan driver"); -+MODULE_LICENSE("GPL"); ---- a/include/soc/bcm2835/raspberrypi-firmware.h -+++ b/include/soc/bcm2835/raspberrypi-firmware.h -@@ -93,6 +93,8 @@ enum rpi_firmware_property_tag { - RPI_FIRMWARE_SET_GPIO_CONFIG = 0x00038043, - RPI_FIRMWARE_GET_PERIPH_REG = 0x00030045, - RPI_FIRMWARE_SET_PERIPH_REG = 0x00038045, -+ RPI_FIRMWARE_GET_POE_HAT_VAL = 0x00030049, -+ RPI_FIRMWARE_SET_POE_HAT_VAL = 0x00030050, - - - /* Dispmanx TAGS */ |