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openwrt/target/linux/bcm27xx/patches-4.19/950-0130-Add-rpi-poe-fan-driver.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx 
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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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 */
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