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authorBoris Brezillon <boris.brezillon@free-electrons.com>2016-04-14 22:17:39 +0300
committerThierry Reding <thierry.reding@gmail.com>2016-05-17 15:48:02 +0300
commit09a7e4a3d9fcb95ade2cb02167e85fbeb8315ce0 (patch)
treeae68e6ab54506c65b510d83aeda3c94906a7faca /drivers/pwm
parent43a276b003ed2e03de9d94b02a1ba49c1849b931 (diff)
downloadlinux-09a7e4a3d9fcb95ade2cb02167e85fbeb8315ce0.tar.xz
pwm: Move the enabled/disabled info into pwm_state
Prepare the transition to PWM atomic update by moving the enabled and disabled state into the pwm_state struct. This way we can easily update the whole PWM state by copying the new state in the ->state field. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/core.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index f3f91e716a42..c240b5437145 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -499,10 +499,10 @@ int pwm_enable(struct pwm_device *pwm)
if (!pwm)
return -EINVAL;
- if (!test_and_set_bit(PWMF_ENABLED, &pwm->flags)) {
+ if (!pwm_is_enabled(pwm)) {
err = pwm->chip->ops->enable(pwm->chip, pwm);
- if (err)
- clear_bit(PWMF_ENABLED, &pwm->flags);
+ if (!err)
+ pwm->state.enabled = true;
}
return err;
@@ -515,8 +515,13 @@ EXPORT_SYMBOL_GPL(pwm_enable);
*/
void pwm_disable(struct pwm_device *pwm)
{
- if (pwm && test_and_clear_bit(PWMF_ENABLED, &pwm->flags))
+ if (!pwm)
+ return;
+
+ if (pwm_is_enabled(pwm)) {
pwm->chip->ops->disable(pwm->chip, pwm);
+ pwm->state.enabled = false;
+ }
}
EXPORT_SYMBOL_GPL(pwm_disable);