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authorAndrzej Pietrasiewicz <andrzej.p@collabora.com>2020-06-29 15:29:21 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-06-29 21:26:36 +0300
commit7f4957be0d5b83c8964491863202136c916107ae (patch)
tree5d3f46b069347b04ff78eb0c073e994efbb20047 /drivers/thermal/imx_thermal.c
parentac5d9ecc74d8beee8c87f1441e4adaf4e9fe90c5 (diff)
downloadlinux-7f4957be0d5b83c8964491863202136c916107ae.tar.xz
thermal: Use mode helpers in drivers
Use thermal_zone_device_{en|dis}able() and thermal_zone_device_is_enabled(). Consequently, all set_mode() implementations in drivers: - can stop modifying tzd's "mode" member, - shall stop taking tzd's lock, as it is taken in the helpers - shall stop calling thermal_zone_device_update() as it is called in the helpers - can assume they are called when the mode truly changes, so checks to verify that can be dropped Not providing set_mode() by a driver no longer prevents the core from being able to set tzd's mode, so the relevant check in mode_store() is removed. Other comments: - acpi/thermal.c: tz->thermal_zone->mode will be updated only after we return from set_mode(), so use function parameter in thermal_set_mode() instead, no need to call acpi_thermal_check() in set_mode() - thermal/imx_thermal.c: regmap writes and mode assignment are done in thermal_zone_device_{en|dis}able() and set_mode() callback - thermal/intel/intel_quark_dts_thermal.c: soc_dts_{en|dis}able() are a part of set_mode() callback, so they don't need to modify tzd->mode, and don't need to fall back to the opposite mode if unsuccessful, as the return value will be propagated to thermal_zone_device_{en|dis}able() and ultimately tzd's member will not be changed in thermal_zone_device_set_mode(). - thermal/of-thermal.c: no need to set zone->mode to DISABLED in of_parse_thermal_zones() as a tzd is kzalloc'ed so mode is DISABLED anyway Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> [for acerhdf] Acked-by: Peter Kaestle <peter@piie.net> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200629122925.21729-8-andrzej.p@collabora.com
Diffstat (limited to 'drivers/thermal/imx_thermal.c')
-rw-r--r--drivers/thermal/imx_thermal.c33
1 files changed, 14 insertions, 19 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 2c7ee5da608a..53abb1be1cba 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -255,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
bool wait;
u32 val;
- if (tz->mode == THERMAL_DEVICE_ENABLED) {
+ if (thermal_zone_device_is_enabled(tz)) {
/* Check if a measurement is currently in progress */
regmap_read(map, soc_data->temp_data, &val);
wait = !(val & soc_data->temp_valid_mask);
@@ -282,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
regmap_read(map, soc_data->temp_data, &val);
- if (tz->mode != THERMAL_DEVICE_ENABLED) {
+ if (!thermal_zone_device_is_enabled(tz)) {
regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
soc_data->measure_temp_mask);
regmap_write(map, soc_data->sensor_ctrl + REG_SET,
@@ -365,9 +365,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
}
}
- tz->mode = mode;
- thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
-
return 0;
}
@@ -819,7 +816,9 @@ static int imx_thermal_probe(struct platform_device *pdev)
data->socdata->measure_temp_mask);
data->irq_enabled = true;
- data->tz->mode = THERMAL_DEVICE_ENABLED;
+ ret = thermal_zone_device_enable(data->tz);
+ if (ret)
+ goto thermal_zone_unregister;
ret = devm_request_threaded_irq(&pdev->dev, data->irq,
imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
@@ -861,19 +860,18 @@ static int imx_thermal_remove(struct platform_device *pdev)
static int __maybe_unused imx_thermal_suspend(struct device *dev)
{
struct imx_thermal_data *data = dev_get_drvdata(dev);
- struct regmap *map = data->tempmon;
+ int ret;
/*
* Need to disable thermal sensor, otherwise, when thermal core
* try to get temperature before thermal sensor resume, a wrong
* temperature will be read as the thermal sensor is powered
- * down.
+ * down. This is done in set_mode() operation called from
+ * thermal_zone_device_disable()
*/
- regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
- data->socdata->measure_temp_mask);
- regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
- data->socdata->power_down_mask);
- data->tz->mode = THERMAL_DEVICE_DISABLED;
+ ret = thermal_zone_device_disable(data->tz);
+ if (ret)
+ return ret;
clk_disable_unprepare(data->thermal_clk);
return 0;
@@ -882,18 +880,15 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
static int __maybe_unused imx_thermal_resume(struct device *dev)
{
struct imx_thermal_data *data = dev_get_drvdata(dev);
- struct regmap *map = data->tempmon;
int ret;
ret = clk_prepare_enable(data->thermal_clk);
if (ret)
return ret;
/* Enabled thermal sensor after resume */
- regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
- data->socdata->power_down_mask);
- regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
- data->socdata->measure_temp_mask);
- data->tz->mode = THERMAL_DEVICE_ENABLED;
+ ret = thermal_zone_device_enable(data->tz);
+ if (ret)
+ return ret;
return 0;
}