diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.14/804-hwmon-tc654-add-thermal_cooling-device.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.14/804-hwmon-tc654-add-thermal_cooling-device.patch | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/target/linux/apm821xx/patches-4.14/804-hwmon-tc654-add-thermal_cooling-device.patch b/target/linux/apm821xx/patches-4.14/804-hwmon-tc654-add-thermal_cooling-device.patch deleted file mode 100644 index 18ed8aecce..0000000000 --- a/target/linux/apm821xx/patches-4.14/804-hwmon-tc654-add-thermal_cooling-device.patch +++ /dev/null @@ -1,174 +0,0 @@ -From 15ae701189744d321d3a1264ff46f8871e8765ee Mon Sep 17 00:00:00 2001 -From: Christian Lamparter <chunkeey@gmail.com> -Date: Sun, 17 Dec 2017 17:29:13 +0100 -Subject: [PATCH] hwmon: tc654: add thermal_cooling device - -This patch adds a thermaL_cooling device to the tc654 driver. -This allows the chip to be used for DT-based cooling. - -Signed-off-by: Christian Lamparter <chunkeey@gmail.com> ---- - drivers/hwmon/tc654.c | 103 +++++++++++++++++++++++++++++++++++++++++--------- - 1 file changed, 86 insertions(+), 17 deletions(-) - ---- a/drivers/hwmon/tc654.c -+++ b/drivers/hwmon/tc654.c -@@ -24,6 +24,7 @@ - #include <linux/module.h> - #include <linux/mutex.h> - #include <linux/slab.h> -+#include <linux/thermal.h> - #include <linux/util_macros.h> - - enum tc654_regs { -@@ -141,6 +142,9 @@ struct tc654_data { - * writable register used to control the duty - * cycle of the V OUT output. - */ -+ -+ /* optional cooling device */ -+ struct thermal_cooling_device *cdev; - }; - - /* helper to grab and cache data, at most one time per second */ -@@ -376,36 +380,30 @@ static ssize_t set_pwm_mode(struct devic - static const int tc654_pwm_map[16] = { 77, 88, 102, 112, 124, 136, 148, 160, - 172, 184, 196, 207, 219, 231, 243, 255}; - -+static int get_pwm(struct tc654_data *data) -+{ -+ if (data->config & TC654_REG_CONFIG_SDM) -+ return 0; -+ else -+ return tc654_pwm_map[data->duty_cycle]; -+} -+ - static ssize_t show_pwm(struct device *dev, struct device_attribute *da, - char *buf) - { - struct tc654_data *data = tc654_update_client(dev); -- int pwm; - - if (IS_ERR(data)) - return PTR_ERR(data); - -- if (data->config & TC654_REG_CONFIG_SDM) -- pwm = 0; -- else -- pwm = tc654_pwm_map[data->duty_cycle]; -- -- return sprintf(buf, "%d\n", pwm); -+ return sprintf(buf, "%d\n", get_pwm(data)); - } - --static ssize_t set_pwm(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) -@@ -425,6 +423,22 @@ static ssize_t set_pwm(struct device *de - - out: - mutex_unlock(&data->update_lock); -+ return ret; -+} -+ -+static ssize_t set_pwm(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; -+ -+ ret = _set_pwm(data, val); - return ret < 0 ? ret : count; - } - -@@ -462,6 +476,47 @@ static struct attribute *tc654_attrs[] = - - ATTRIBUTE_GROUPS(tc654); - -+/* cooling device */ -+ -+static int tc654_get_max_state(struct thermal_cooling_device *cdev, -+ unsigned long *state) -+{ -+ *state = 255; -+ 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); -+ -+ *state = get_pwm(data); -+ 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); -+ -+ if (state > 255) -+ return -EINVAL; -+ -+ return _set_pwm(data, 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 - */ -@@ -493,7 +548,21 @@ 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_OF) -+ /* Optional cooling device register for Device tree platforms */ -+ data->cdev = thermal_of_cooling_device_register(client->dev.of_node, -+ "tc654", hwmon_dev, -+ &tc654_fan_cool_ops); -+#else /* CONFIG_OF */ -+ /* Optional cooling device register for non Device tree platforms */ -+ data->cdev = thermal_cooling_device_register("tc654", hwmon_dev, -+ &tc654_fan_cool_ops); -+#endif /* CONFIG_OF */ -+ -+ return PTR_ERR_OR_ZERO(data->cdev); - } - - static const struct i2c_device_id tc654_id[] = { |