On 02/26/2015 05:59 AM, Lukasz Majewski wrote:
The PWM FAN device can now be used as a thermal cooling device. Necessary
infrastructure has been added in this commit.
Signed-off-by: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
Acked-by: Eduardo Valentin <edubezval@xxxxxxxxx>
---
Changes for v2:
- Replace pwm_fan_cooling_states with pwm_fan_cooling_levels
- Update ctx->pwm_fan_state when correct data from device tree is available
- Using therma_cdev_update() when thermal is ready for controlling the fan
Changes for v3:
- Rename patch heading
- pwm_fan_of_get_cooling_data() now returns -EINVAL when no "cooling-levels"
property defined
- register of cooling device only when proper cooling data is present
Changes for v4:
- None
Changes for v5:
- Check for IS_ENABLED(CONFIG_THERMAL) has been added to prevent from
executing thermal_* specific functions
Changes for v6:
- Adding missing ctx == NULL check in pwm_fan_get_max_state()
- Call to thermal_cooling_device_unregister(ctx->cdev); at pwm_fan_remove()
- struct thermal_cooling_device *cdev; added to struct pwm_fan_ctx
---
drivers/hwmon/pwm-fan.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 88 insertions(+), 1 deletion(-)
[ ... ]
@@ -200,6 +286,7 @@ static int pwm_fan_remove(struct platform_device *pdev)
{
struct pwm_fan_ctx *ctx = platform_get_drvdata(pdev);
+ thermal_cooling_device_unregister(ctx->cdev);
Unfortunately there is still no prototype for this if CONFIG_THERMAL
is not configured.
Two options: Yet another revision, or wait a week until the prototypes
are (hopefully) available and submit a patch without the conditionals.
Guenter
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