apm821xx: remove 5.15 remnants

[openwrt/openwrt.git] / target / linux / apm821xx / patches-5.15 / 010-hwmon-tc654-add-thermal_cooling-device.patch

diff --git a/target/linux/apm821xx/patches-5.15/010-hwmon-tc654-add-thermal_cooling-device.patch b/target/linux/apm821xx/patches-5.15/010-hwmon-tc654-add-thermal_cooling-device.patch
deleted file mode 100644 (file)
index 74f8e38..0000000
--- a/target/linux/apm821xx/patches-5.15/010-hwmon-tc654-add-thermal_cooling-device.patch
+++ /dev/null
@@ -1,166 +0,0 @@
-From 4d49367c5303e3ebd17502a45b74de280f6be539 Mon Sep 17 00:00:00 2001
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Sun, 13 Feb 2022 01:47:33 +0100
-Subject: hwmon: (tc654) Add thermal_cooling device support
-
-Adds thermal_cooling device support to the tc654/tc655
-driver. This make it possible to integrate it into a
-device-tree supported thermal-zone node as a
-cooling device.
-
-I have been using this patch as part of the Netgear WNDR4700
-Centria NAS Router support within OpenWrt since 2016.
-
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
-Link: https://lore.kernel.org/r/20220213004733.2421193-1-chunkeey@gmail.com
-Signed-off-by: Guenter Roeck <linux@roeck-us.net>
----
---- a/drivers/hwmon/tc654.c
-+++ b/drivers/hwmon/tc654.c
-@@ -15,6 +15,7 @@
- #include <linux/module.h>
- #include <linux/mutex.h>
- #include <linux/slab.h>
-+#include <linux/thermal.h>
- #include <linux/util_macros.h>
- 
- enum tc654_regs {
-@@ -379,28 +380,20 @@ static ssize_t pwm_show(struct device *d
-       return sprintf(buf, "%d\n", pwm);
- }
- 
--static ssize_t pwm_store(struct device *dev, struct device_attribute *da,
--                       const char *buf, size_t count)
-+static int _set_pwm(struct tc654_data *data, unsigned long val)
- {
--      struct tc654_data *data = dev_get_drvdata(dev);
-       struct i2c_client *client = data->client;
--      unsigned long val;
-       int ret;
- 
--      if (kstrtoul(buf, 10, &val))
--              return -EINVAL;
--      if (val > 255)
--              return -EINVAL;
--
-       mutex_lock(&data->update_lock);
- 
--      if (val == 0)
-+      if (val == 0) {
-               data->config |= TC654_REG_CONFIG_SDM;
--      else
-+              data->duty_cycle = 0;
-+      } else {
-               data->config &= ~TC654_REG_CONFIG_SDM;
--
--      data->duty_cycle = find_closest(val, tc654_pwm_map,
--                                      ARRAY_SIZE(tc654_pwm_map));
-+              data->duty_cycle = val - 1;
-+      }
- 
-       ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config);
-       if (ret < 0)
-@@ -411,6 +404,24 @@ static ssize_t pwm_store(struct device *
- 
- out:
-       mutex_unlock(&data->update_lock);
-+      return ret;
-+}
-+
-+static ssize_t pwm_store(struct device *dev, struct device_attribute *da,
-+                       const char *buf, size_t count)
-+{
-+      struct tc654_data *data = dev_get_drvdata(dev);
-+      unsigned long val;
-+      int ret;
-+
-+      if (kstrtoul(buf, 10, &val))
-+              return -EINVAL;
-+      if (val > 255)
-+              return -EINVAL;
-+      if (val > 0)
-+              val = find_closest(val, tc654_pwm_map, ARRAY_SIZE(tc654_pwm_map)) + 1;
-+
-+      ret = _set_pwm(data, val);
-       return ret < 0 ? ret : count;
- }
- 
-@@ -443,6 +454,58 @@ static struct attribute *tc654_attrs[] =
- ATTRIBUTE_GROUPS(tc654);
- 
- /*
-+ * thermal cooling device functions
-+ *
-+ * Account for the "ShutDown Mode (SDM)" state by offsetting
-+ * the 16 PWM duty cycle states by 1.
-+ *
-+ * State  0 =   0% PWM | Shutdown - Fan(s) are off
-+ * State  1 =  30% PWM | duty_cycle =  0
-+ * State  2 = ~35% PWM | duty_cycle =  1
-+ * [...]
-+ * State 15 = ~95% PWM | duty_cycle = 14
-+ * State 16 = 100% PWM | duty_cycle = 15
-+ */
-+#define TC654_MAX_COOLING_STATE       16
-+
-+static int tc654_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state)
-+{
-+      *state = TC654_MAX_COOLING_STATE;
-+      return 0;
-+}
-+
-+static int tc654_get_cur_state(struct thermal_cooling_device *cdev, unsigned long *state)
-+{
-+      struct tc654_data *data = tc654_update_client(cdev->devdata);
-+
-+      if (IS_ERR(data))
-+              return PTR_ERR(data);
-+
-+      if (data->config & TC654_REG_CONFIG_SDM)
-+              *state = 0;     /* FAN is off */
-+      else
-+              *state = data->duty_cycle + 1;  /* offset PWM States by 1 */
-+
-+      return 0;
-+}
-+
-+static int tc654_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state)
-+{
-+      struct tc654_data *data = tc654_update_client(cdev->devdata);
-+
-+      if (IS_ERR(data))
-+              return PTR_ERR(data);
-+
-+      return _set_pwm(data, clamp_val(state, 0, TC654_MAX_COOLING_STATE));
-+}
-+
-+static const struct thermal_cooling_device_ops tc654_fan_cool_ops = {
-+      .get_max_state = tc654_get_max_state,
-+      .get_cur_state = tc654_get_cur_state,
-+      .set_cur_state = tc654_set_cur_state,
-+};
-+
-+/*
-  * device probe and removal
-  */
- 
-@@ -472,7 +535,18 @@ static int tc654_probe(struct i2c_client
-       hwmon_dev =
-           devm_hwmon_device_register_with_groups(dev, client->name, data,
-                                                  tc654_groups);
--      return PTR_ERR_OR_ZERO(hwmon_dev);
-+      if (IS_ERR(hwmon_dev))
-+              return PTR_ERR(hwmon_dev);
-+
-+      if (IS_ENABLED(CONFIG_THERMAL)) {
-+              struct thermal_cooling_device *cdev;
-+
-+              cdev = devm_thermal_of_cooling_device_register(dev, dev->of_node, client->name,
-+                                                             hwmon_dev, &tc654_fan_cool_ops);
-+              return PTR_ERR_OR_ZERO(cdev);
-+      }
-+
-+      return 0;
- }
- 
- static const struct i2c_device_id tc654_id[] = {