diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.4/912-hwmon-lm90-expose-to-thermal-fw-via-DT.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.4/912-hwmon-lm90-expose-to-thermal-fw-via-DT.patch | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/target/linux/apm821xx/patches-4.4/912-hwmon-lm90-expose-to-thermal-fw-via-DT.patch b/target/linux/apm821xx/patches-4.4/912-hwmon-lm90-expose-to-thermal-fw-via-DT.patch deleted file mode 100644 index 9eb9cee..0000000 --- a/target/linux/apm821xx/patches-4.4/912-hwmon-lm90-expose-to-thermal-fw-via-DT.patch +++ /dev/null @@ -1,149 +0,0 @@ -From: Wei Ni <wni@nvidia.com> -Subject: hwmon: lm90: expose to thermal fw via DT nodes - -This patch adds to lm90 temperature sensor the possibility -to expose itself as thermal zone device, registered on the -thermal framework. - -The thermal zone is built only if a device tree node -describing a thermal zone for this sensor is present -inside the lm90 DT node. Otherwise, the driver behavior -will be the same. - -Discussed in: -http://www.gossamer-threads.com/lists/linux/kernel/1992853 - -BUG=chrome-os-partner:30834 -TEST=Verified. Build and boot up system. - -Signed-off-by: Wei Ni <wni@nvidia.com> -Reviewed-on: https://chromium-review.googlesource.com/181447 -Reviewed-by: Dylan Reid <dgreid@chromium.org> -Tested-by: Dylan Reid <dgreid@chromium.org> -Commit-Queue: Dylan Reid <dgreid@chromium.org> -Change-Id: Id356b94d7e8f4b49ec15e46b17a1fa2ff0cbf8cf -Reviewed-on: https://chromium-review.googlesource.com/212414 -Tested-by: Wei Ni <wni.nvidia@gmail.com> -Reviewed-by: Olof Johansson <olofj@chromium.org> -Commit-Queue: Olof Johansson <olofj@chromium.org> ---- ---- a/drivers/hwmon/lm90.c -+++ b/drivers/hwmon/lm90.c -@@ -96,6 +96,8 @@ - #include <linux/sysfs.h> - #include <linux/interrupt.h> - #include <linux/regulator/consumer.h> -+#include <linux/of.h> -+#include <linux/thermal.h> - - /* - * Addresses to scan -@@ -119,6 +121,13 @@ static const unsigned short normal_i2c[] - enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680, - max6646, w83l771, max6696, sa56004, g781, tmp451 }; - -+enum sensor_id { -+ LOCAL = 0, -+ REMOTE, -+ REMOTE2, -+ SENSOR_ID_END, -+}; -+ - /* - * The LM90 registers - */ -@@ -368,6 +377,7 @@ struct lm90_data { - struct i2c_client *client; - struct device *hwmon_dev; - const struct attribute_group *groups[6]; -+ struct thermal_zone_device *tz[SENSOR_ID_END]; - struct mutex update_lock; - struct regulator *regulator; - char valid; /* zero until following fields are valid */ -@@ -880,6 +890,24 @@ static ssize_t show_temp11(struct device - return sprintf(buf, "%d\n", read_temp11(dev, attr->index)); - } - -+static int lm90_read_local_temp(void *dev, int *temp) -+{ -+ *temp = read_temp11(dev, 4); -+ return 0; -+} -+ -+static int lm90_read_remote_temp(void *dev, int *temp) -+{ -+ *temp = read_temp11(dev, 0); -+ return 0; -+} -+ -+static int lm90_read_remote2_temp(void *dev, int *temp) -+{ -+ *temp = read_temp11(dev, 5); -+ return 0; -+} -+ - static int write_temp11(struct device *dev, int nr, int index, long val) - { - struct { -@@ -1210,6 +1238,18 @@ static const struct attribute_group lm90 - .attrs = lm90_temp3_attributes, - }; - -+static const struct thermal_zone_of_device_ops local_temp_sensor = { -+ .get_temp = lm90_read_local_temp, -+}; -+ -+static const struct thermal_zone_of_device_ops remote_temp_sensor = { -+ .get_temp = lm90_read_remote_temp, -+}; -+ -+static const struct thermal_zone_of_device_ops remote2_temp_sensor = { -+ .get_temp = lm90_read_remote2_temp, -+}; -+ - /* pec used for ADM1032 only */ - static ssize_t show_pec(struct device *dev, struct device_attribute *dummy, - char *buf) -@@ -1659,6 +1699,30 @@ static int lm90_probe(struct i2c_client - } - } - -+ data->tz[LOCAL] = thermal_zone_of_sensor_register(&client->dev, -+ LOCAL, -+ &client->dev, -+ &local_temp_sensor); -+ if (IS_ERR(data->tz[LOCAL])) -+ data->tz[LOCAL] = NULL; -+ -+ data->tz[REMOTE] = thermal_zone_of_sensor_register(&client->dev, -+ REMOTE, -+ &client->dev, -+ &remote_temp_sensor); -+ if (IS_ERR(data->tz[REMOTE])) -+ data->tz[REMOTE] = NULL; -+ -+ if (data->flags & LM90_HAVE_TEMP3) { -+ data->tz[REMOTE2] = thermal_zone_of_sensor_register( -+ &client->dev, -+ REMOTE2, -+ &client->dev, -+ &remote2_temp_sensor); -+ if (IS_ERR(data->tz[REMOTE2])) -+ data->tz[REMOTE2] = NULL; -+ } -+ - return 0; - - exit_unregister: -@@ -1674,8 +1738,11 @@ exit_restore: - - static int lm90_remove(struct i2c_client *client) - { -+ int i; - struct lm90_data *data = i2c_get_clientdata(client); - -+ for (i = 0; i < SENSOR_ID_END; i++) -+ thermal_zone_of_sensor_unregister(&client->dev, data->tz[i]); - hwmon_device_unregister(data->hwmon_dev); - device_remove_file(&client->dev, &dev_attr_pec); - lm90_restore_conf(client, data); |