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Diffstat (limited to 'target/linux/mvebu/patches-5.10/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch')
-rw-r--r--target/linux/mvebu/patches-5.10/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch501
1 files changed, 0 insertions, 501 deletions
diff --git a/target/linux/mvebu/patches-5.10/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch b/target/linux/mvebu/patches-5.10/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch
deleted file mode 100644
index d31709fd85..0000000000
--- a/target/linux/mvebu/patches-5.10/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch
+++ /dev/null
@@ -1,501 +0,0 @@
-From e3310a638cd310bfd93dbbc6d2732ab6aea18dd2 Mon Sep 17 00:00:00 2001
-From: Luka Kovacic <luka.kovacic () sartura ! hr>
-Date: Tue, 24 Aug 2021 12:44:34 +0000
-Subject: [PATCH 3/7] drivers: hwmon: Add the IEI WT61P803 PUZZLE HWMON driver
-
-Add the IEI WT61P803 PUZZLE HWMON driver, that handles the fan speed
-control via PWM, reading fan speed and reading on-board temperature
-sensors.
-
-The driver registers a HWMON device and a simple thermal cooling device to
-enable in-kernel fan management.
-
-This driver depends on the IEI WT61P803 PUZZLE MFD driver.
-
-Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
-Signed-off-by: Pavo Banicevic <pavo.banicevic@sartura.hr>
-Acked-by: Guenter Roeck <linux@roeck-us.net>
-Cc: Luka Perkov <luka.perkov@sartura.hr>
-Cc: Robert Marko <robert.marko@sartura.hr>
----
- drivers/hwmon/Kconfig | 8 +
- drivers/hwmon/Makefile | 1 +
- drivers/hwmon/iei-wt61p803-puzzle-hwmon.c | 413 ++++++++++++++++++++++
- 3 files changed, 422 insertions(+)
- create mode 100644 drivers/hwmon/iei-wt61p803-puzzle-hwmon.c
-
---- a/drivers/hwmon/Kconfig
-+++ b/drivers/hwmon/Kconfig
-@@ -722,6 +722,14 @@ config SENSORS_IBMPOWERNV
- This driver can also be built as a module. If so, the module
- will be called ibmpowernv.
-
-+config SENSORS_IEI_WT61P803_PUZZLE_HWMON
-+ tristate "IEI WT61P803 PUZZLE MFD HWMON Driver"
-+ depends on MFD_IEI_WT61P803_PUZZLE
-+ help
-+ The IEI WT61P803 PUZZLE MFD HWMON Driver handles reading fan speed
-+ and writing fan PWM values. It also supports reading on-board
-+ temperature sensors.
-+
- config SENSORS_IIO_HWMON
- tristate "Hwmon driver that uses channels specified via iio maps"
- depends on IIO
---- a/drivers/hwmon/Makefile
-+++ b/drivers/hwmon/Makefile
-@@ -83,6 +83,7 @@ obj-$(CONFIG_SENSORS_HIH6130) += hih6130
- obj-$(CONFIG_SENSORS_ULTRA45) += ultra45_env.o
- obj-$(CONFIG_SENSORS_I5500) += i5500_temp.o
- obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o
-+obj-$(CONFIG_SENSORS_IEI_WT61P803_PUZZLE_HWMON) += iei-wt61p803-puzzle-hwmon.o
- obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o
- obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o
- obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o
---- /dev/null
-+++ b/drivers/hwmon/iei-wt61p803-puzzle-hwmon.c
-@@ -0,0 +1,445 @@
-+// SPDX-License-Identifier: GPL-2.0-only
-+/* IEI WT61P803 PUZZLE MCU HWMON Driver
-+ *
-+ * Copyright (C) 2020 Sartura Ltd.
-+ * Author: Luka Kovacic <luka.kovacic@sartura.hr>
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/hwmon.h>
-+#include <linux/interrupt.h>
-+#include <linux/irq.h>
-+#include <linux/math64.h>
-+#include <linux/mfd/iei-wt61p803-puzzle.h>
-+#include <linux/mod_devicetable.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/property.h>
-+#include <linux/slab.h>
-+#include <linux/thermal.h>
-+
-+#define IEI_WT61P803_PUZZLE_HWMON_MAX_PWM 2
-+#define IEI_WT61P803_PUZZLE_HWMON_MAX_PWM_VAL 255
-+
-+/**
-+ * struct iei_wt61p803_puzzle_thermal_cooling_device - Thermal cooling device instance
-+ * @mcu_hwmon: Parent driver struct pointer
-+ * @tcdev: Thermal cooling device pointer
-+ * @name: Thermal cooling device name
-+ * @pwm_channel: Controlled PWM channel (0 or 1)
-+ * @cooling_levels: Thermal cooling device cooling levels (DT)
-+ * @cur_level: Current cooling level
-+ * @num_levels: Number of cooling levels
-+ */
-+struct iei_wt61p803_puzzle_thermal_cooling_device {
-+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon;
-+ struct thermal_cooling_device *tcdev;
-+ char name[THERMAL_NAME_LENGTH];
-+ int pwm_channel;
-+ u32 *cooling_levels;
-+ int cur_level;
-+ u8 num_levels;
-+};
-+
-+/**
-+ * struct iei_wt61p803_puzzle_hwmon - MCU HWMON Driver
-+ * @mcu: MCU struct pointer
-+ * @response_buffer Global MCU response buffer
-+ * @thermal_cooling_dev_present: Per-channel thermal cooling device control indicator
-+ * @cdev: Per-channel thermal cooling device private structure
-+ */
-+struct iei_wt61p803_puzzle_hwmon {
-+ struct iei_wt61p803_puzzle *mcu;
-+ unsigned char response_buffer[IEI_WT61P803_PUZZLE_BUF_SIZE];
-+ bool thermal_cooling_dev_present[IEI_WT61P803_PUZZLE_HWMON_MAX_PWM];
-+ struct iei_wt61p803_puzzle_thermal_cooling_device
-+ *cdev[IEI_WT61P803_PUZZLE_HWMON_MAX_PWM];
-+ struct mutex lock; /* mutex to protect response_buffer array */
-+};
-+
-+#define raw_temp_to_milidegree_celsius(x) (((x) - 0x80) * 1000)
-+static int iei_wt61p803_puzzle_read_temp_sensor(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon,
-+ int channel, long *value)
-+{
-+ unsigned char *resp_buf = mcu_hwmon->response_buffer;
-+ unsigned char temp_sensor_ntc_cmd[4] = {
-+ IEI_WT61P803_PUZZLE_CMD_HEADER_START,
-+ IEI_WT61P803_PUZZLE_CMD_TEMP,
-+ IEI_WT61P803_PUZZLE_CMD_TEMP_ALL,
-+ };
-+ size_t reply_size;
-+ int ret;
-+
-+ mutex_lock(&mcu_hwmon->lock);
-+ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, temp_sensor_ntc_cmd,
-+ sizeof(temp_sensor_ntc_cmd), resp_buf,
-+ &reply_size);
-+ if (ret)
-+ goto exit;
-+
-+ if (reply_size != 7) {
-+ ret = -EIO;
-+ goto exit;
-+ }
-+
-+ /* Check the number of NTC values */
-+ if (resp_buf[3] != '2') {
-+ ret = -EIO;
-+ goto exit;
-+ }
-+
-+ *value = raw_temp_to_milidegree_celsius(resp_buf[4 + channel]);
-+exit:
-+ mutex_unlock(&mcu_hwmon->lock);
-+ return ret;
-+}
-+
-+#define raw_fan_val_to_rpm(x, y) ((((x) << 8 | (y)) / 2) * 60)
-+static int iei_wt61p803_puzzle_read_fan_speed(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon,
-+ int channel, long *value)
-+{
-+ unsigned char *resp_buf = mcu_hwmon->response_buffer;
-+ unsigned char fan_speed_cmd[4] = {};
-+ size_t reply_size;
-+ int ret;
-+
-+ fan_speed_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START;
-+ fan_speed_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN;
-+ fan_speed_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_RPM(channel);
-+
-+ mutex_lock(&mcu_hwmon->lock);
-+ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, fan_speed_cmd,
-+ sizeof(fan_speed_cmd), resp_buf,
-+ &reply_size);
-+ if (ret)
-+ goto exit;
-+
-+ if (reply_size != 7) {
-+ ret = -EIO;
-+ goto exit;
-+ }
-+
-+ *value = raw_fan_val_to_rpm(resp_buf[3], resp_buf[4]);
-+exit:
-+ mutex_unlock(&mcu_hwmon->lock);
-+ return ret;
-+}
-+
-+static int iei_wt61p803_puzzle_write_pwm_channel(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon,
-+ int channel, long pwm_set_val)
-+{
-+ unsigned char *resp_buf = mcu_hwmon->response_buffer;
-+ unsigned char pwm_set_cmd[6] = {};
-+ size_t reply_size;
-+ int ret;
-+
-+ pwm_set_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START;
-+ pwm_set_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN;
-+ pwm_set_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM_WRITE;
-+ pwm_set_cmd[3] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM(channel);
-+ pwm_set_cmd[4] = pwm_set_val;
-+
-+ mutex_lock(&mcu_hwmon->lock);
-+ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, pwm_set_cmd,
-+ sizeof(pwm_set_cmd), resp_buf,
-+ &reply_size);
-+ if (ret)
-+ goto exit;
-+
-+ if (reply_size != 3) {
-+ ret = -EIO;
-+ goto exit;
-+ }
-+
-+ if (!(resp_buf[0] == IEI_WT61P803_PUZZLE_CMD_HEADER_START &&
-+ resp_buf[1] == IEI_WT61P803_PUZZLE_CMD_RESPONSE_OK &&
-+ resp_buf[2] == IEI_WT61P803_PUZZLE_CHECKSUM_RESPONSE_OK)) {
-+ ret = -EIO;
-+ goto exit;
-+ }
-+exit:
-+ mutex_unlock(&mcu_hwmon->lock);
-+ return ret;
-+}
-+
-+static int iei_wt61p803_puzzle_read_pwm_channel(struct iei_wt61p803_puzzle_hwmon *mcu_hwmon,
-+ int channel, long *value)
-+{
-+ unsigned char *resp_buf = mcu_hwmon->response_buffer;
-+ unsigned char pwm_get_cmd[5] = {};
-+ size_t reply_size;
-+ int ret;
-+
-+ pwm_get_cmd[0] = IEI_WT61P803_PUZZLE_CMD_HEADER_START;
-+ pwm_get_cmd[1] = IEI_WT61P803_PUZZLE_CMD_FAN;
-+ pwm_get_cmd[2] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM_READ;
-+ pwm_get_cmd[3] = IEI_WT61P803_PUZZLE_CMD_FAN_PWM(channel);
-+
-+ ret = iei_wt61p803_puzzle_write_command(mcu_hwmon->mcu, pwm_get_cmd,
-+ sizeof(pwm_get_cmd), resp_buf,
-+ &reply_size);
-+ if (ret)
-+ return ret;
-+
-+ if (reply_size != 5)
-+ return -EIO;
-+
-+ if (resp_buf[2] != IEI_WT61P803_PUZZLE_CMD_FAN_PWM_READ)
-+ return -EIO;
-+
-+ *value = resp_buf[3];
-+
-+ return 0;
-+}
-+
-+static int iei_wt61p803_puzzle_read(struct device *dev, enum hwmon_sensor_types type,
-+ u32 attr, int channel, long *val)
-+{
-+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = dev_get_drvdata(dev->parent);
-+
-+ switch (type) {
-+ case hwmon_pwm:
-+ return iei_wt61p803_puzzle_read_pwm_channel(mcu_hwmon, channel, val);
-+ case hwmon_fan:
-+ return iei_wt61p803_puzzle_read_fan_speed(mcu_hwmon, channel, val);
-+ case hwmon_temp:
-+ return iei_wt61p803_puzzle_read_temp_sensor(mcu_hwmon, channel, val);
-+ default:
-+ return -EINVAL;
-+ }
-+}
-+
-+static int iei_wt61p803_puzzle_write(struct device *dev, enum hwmon_sensor_types type,
-+ u32 attr, int channel, long val)
-+{
-+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = dev_get_drvdata(dev->parent);
-+
-+ return iei_wt61p803_puzzle_write_pwm_channel(mcu_hwmon, channel, val);
-+}
-+
-+static umode_t iei_wt61p803_puzzle_is_visible(const void *data, enum hwmon_sensor_types type,
-+ u32 attr, int channel)
-+{
-+ const struct iei_wt61p803_puzzle_hwmon *mcu_hwmon = data;
-+
-+ switch (type) {
-+ case hwmon_pwm:
-+ if (mcu_hwmon->thermal_cooling_dev_present[channel])
-+ return 0444;
-+ if (attr == hwmon_pwm_input)
-+ return 0644;
-+ break;
-+ case hwmon_fan:
-+ if (attr == hwmon_fan_input)
-+ return 0444;
-+ break;
-+ case hwmon_temp:
-+ if (attr == hwmon_temp_input)
-+ return 0444;
-+ break;
-+ default:
-+ return 0;
-+ }
-+
-+ return 0;
-+}
-+
-+static const struct hwmon_ops iei_wt61p803_puzzle_hwmon_ops = {
-+ .is_visible = iei_wt61p803_puzzle_is_visible,
-+ .read = iei_wt61p803_puzzle_read,
-+ .write = iei_wt61p803_puzzle_write,
-+};
-+
-+static const struct hwmon_channel_info *iei_wt61p803_puzzle_info[] = {
-+ HWMON_CHANNEL_INFO(pwm,
-+ HWMON_PWM_INPUT,
-+ HWMON_PWM_INPUT),
-+ HWMON_CHANNEL_INFO(fan,
-+ HWMON_F_INPUT,
-+ HWMON_F_INPUT,
-+ HWMON_F_INPUT,
-+ HWMON_F_INPUT,
-+ HWMON_F_INPUT),
-+ HWMON_CHANNEL_INFO(temp,
-+ HWMON_T_INPUT,
-+ HWMON_T_INPUT),
-+ NULL
-+};
-+
-+static const struct hwmon_chip_info iei_wt61p803_puzzle_chip_info = {
-+ .ops = &iei_wt61p803_puzzle_hwmon_ops,
-+ .info = iei_wt61p803_puzzle_info,
-+};
-+
-+static int iei_wt61p803_puzzle_get_max_state(struct thermal_cooling_device *tcdev,
-+ unsigned long *state)
-+{
-+ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev = tcdev->devdata;
-+
-+ if (!cdev)
-+ return -EINVAL;
-+
-+ *state = cdev->num_levels - 1;
-+ return 0;
-+}
-+
-+static int iei_wt61p803_puzzle_get_cur_state(struct thermal_cooling_device *tcdev,
-+ unsigned long *state)
-+{
-+ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev = tcdev->devdata;
-+
-+ if (!cdev)
-+ return -EINVAL;
-+
-+ if (cdev->cur_level < 0)
-+ return -EAGAIN;
-+
-+ *state = cdev->cur_level;
-+ return 0;
-+}
-+
-+static int iei_wt61p803_puzzle_set_cur_state(struct thermal_cooling_device *tcdev,
-+ unsigned long state)
-+{
-+ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev = tcdev->devdata;
-+ u8 pwm_level;
-+
-+ if (!cdev)
-+ return -EINVAL;
-+
-+ if (state >= cdev->num_levels)
-+ return -EINVAL;
-+
-+ if (state == cdev->cur_level)
-+ return 0;
-+
-+ cdev->cur_level = state;
-+ pwm_level = cdev->cooling_levels[state];
-+
-+ return iei_wt61p803_puzzle_write_pwm_channel(cdev->mcu_hwmon, cdev->pwm_channel, pwm_level);
-+}
-+
-+static const struct thermal_cooling_device_ops iei_wt61p803_puzzle_cooling_ops = {
-+ .get_max_state = iei_wt61p803_puzzle_get_max_state,
-+ .get_cur_state = iei_wt61p803_puzzle_get_cur_state,
-+ .set_cur_state = iei_wt61p803_puzzle_set_cur_state,
-+};
-+
-+static int
-+iei_wt61p803_puzzle_enable_thermal_cooling_dev(struct device *dev,
-+ struct fwnode_handle *child,
-+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon)
-+{
-+ struct iei_wt61p803_puzzle_thermal_cooling_device *cdev;
-+ u32 pwm_channel;
-+ u8 num_levels;
-+ int i, ret;
-+
-+ ret = fwnode_property_read_u32(child, "reg", &pwm_channel);
-+ if (ret)
-+ return ret;
-+
-+ mcu_hwmon->thermal_cooling_dev_present[pwm_channel] = true;
-+
-+ num_levels = fwnode_property_count_u32(child, "cooling-levels");
-+ if (!num_levels)
-+ return -EINVAL;
-+
-+ cdev = devm_kzalloc(dev, sizeof(*cdev), GFP_KERNEL);
-+ if (!cdev)
-+ return -ENOMEM;
-+
-+ cdev->cooling_levels = devm_kmalloc_array(dev, num_levels, sizeof(u32), GFP_KERNEL);
-+ if (!cdev->cooling_levels)
-+ return -ENOMEM;
-+
-+ ret = fwnode_property_read_u32_array(child, "cooling-levels",
-+ cdev->cooling_levels,
-+ num_levels);
-+ if (ret) {
-+ dev_err(dev, "Couldn't read property 'cooling-levels'\n");
-+ return ret;
-+ }
-+
-+ for (i = 0; i < num_levels; i++) {
-+ if (cdev->cooling_levels[i] >
-+ IEI_WT61P803_PUZZLE_HWMON_MAX_PWM_VAL) {
-+ dev_err(dev, "iei_wt61p803_fan state[%d]:%d > %d\n", i,
-+ cdev->cooling_levels[i],
-+ IEI_WT61P803_PUZZLE_HWMON_MAX_PWM_VAL);
-+ return -EINVAL;
-+ }
-+ }
-+
-+ cdev->mcu_hwmon = mcu_hwmon;
-+ cdev->pwm_channel = pwm_channel;
-+ cdev->num_levels = num_levels;
-+ cdev->cur_level = -1;
-+ mcu_hwmon->cdev[pwm_channel] = cdev;
-+
-+ snprintf(cdev->name, THERMAL_NAME_LENGTH, "wt61p803_puzzle_%d", pwm_channel);
-+ cdev->tcdev = devm_thermal_of_cooling_device_register(dev, to_of_node(child), cdev->name,
-+ cdev, &iei_wt61p803_puzzle_cooling_ops);
-+ if (IS_ERR(cdev->tcdev))
-+ return PTR_ERR(cdev->tcdev);
-+
-+ return 0;
-+}
-+
-+static int iei_wt61p803_puzzle_hwmon_probe(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct iei_wt61p803_puzzle *mcu = dev_get_drvdata(dev->parent);
-+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon;
-+ struct fwnode_handle *child;
-+ struct device *hwmon_dev;
-+ int ret;
-+
-+ mcu_hwmon = devm_kzalloc(dev, sizeof(*mcu_hwmon), GFP_KERNEL);
-+ if (!mcu_hwmon)
-+ return -ENOMEM;
-+
-+ mcu_hwmon->mcu = mcu;
-+ platform_set_drvdata(pdev, mcu_hwmon);
-+ mutex_init(&mcu_hwmon->lock);
-+
-+ hwmon_dev = devm_hwmon_device_register_with_info(dev, "iei_wt61p803_puzzle",
-+ mcu_hwmon,
-+ &iei_wt61p803_puzzle_chip_info,
-+ NULL);
-+ if (IS_ERR(hwmon_dev))
-+ return PTR_ERR(hwmon_dev);
-+
-+ /* Control fans via PWM lines via Linux Kernel */
-+ if (IS_ENABLED(CONFIG_THERMAL)) {
-+ device_for_each_child_node(dev, child) {
-+ ret = iei_wt61p803_puzzle_enable_thermal_cooling_dev(dev, child, mcu_hwmon);
-+ if (ret) {
-+ dev_err(dev, "Enabling the PWM fan failed\n");
-+ fwnode_handle_put(child);
-+ return ret;
-+ }
-+ }
-+ }
-+ return 0;
-+}
-+
-+static const struct of_device_id iei_wt61p803_puzzle_hwmon_id_table[] = {
-+ { .compatible = "iei,wt61p803-puzzle-hwmon" },
-+ {}
-+};
-+MODULE_DEVICE_TABLE(of, iei_wt61p803_puzzle_hwmon_id_table);
-+
-+static struct platform_driver iei_wt61p803_puzzle_hwmon_driver = {
-+ .driver = {
-+ .name = "iei-wt61p803-puzzle-hwmon",
-+ .of_match_table = iei_wt61p803_puzzle_hwmon_id_table,
-+ },
-+ .probe = iei_wt61p803_puzzle_hwmon_probe,
-+};
-+
-+module_platform_driver(iei_wt61p803_puzzle_hwmon_driver);
-+
-+MODULE_DESCRIPTION("IEI WT61P803 PUZZLE MCU HWMON Driver");
-+MODULE_AUTHOR("Luka Kovacic <luka.kovacic@sartura.hr>");
-+MODULE_LICENSE("GPL v2");
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