diff options
| author |   Boris Brezillon <boris.brezillon@free-electrons.com> | 2015-07-01 10:21:47 +0200 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2015-07-20 09:46:06 +0200 |
| commit | 5c31252c4a86dc591c23f1a951edd52ad791ef0e (patch) | |
| tree | 4a955e92027bbf95cd5fc9222245c0e4c8810a43 /drivers/pwm/pwm-atmel.c | |
| parent | Linux 4.2-rc1 (diff) | |
| download | linux-dev-5c31252c4a86dc591c23f1a951edd52ad791ef0e.tar.xz linux-dev-5c31252c4a86dc591c23f1a951edd52ad791ef0e.zip | |
pwm: Add the pwm_is_enabled() helper
Some PWM drivers are testing the PWMF_ENABLED flag. Create a helper
function to hide the logic behind enabled test. This will allow us to
smoothly move from the current approach to an atomic PWM update
approach.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-atmel.c')
| -rw-r--r-- | drivers/pwm/pwm-atmel.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-atmel.c b/drivers/pwm/pwm-atmel.c index a947c9095d9d..b3b294de88e0 100644 --- a/drivers/pwm/pwm-atmel.c +++ b/drivers/pwm/pwm-atmel.c @@ -114,7 +114,7 @@ static int atmel_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, u32 val; int ret; - if (test_bit(PWMF_ENABLED, &pwm->flags) && (period_ns != pwm->period)) { + if (pwm_is_enabled(pwm) && (period_ns != pwm->period)) { dev_err(chip->dev, "cannot change PWM period while enabled\n"); return -EBUSY; } @@ -176,7 +176,7 @@ static void atmel_pwm_config_v1(struct pwm_chip *chip, struct pwm_device *pwm, * If the PWM channel is enabled, only update CDTY by using the update * register, it needs to set bit 10 of CMR to 0 */ - if (test_bit(PWMF_ENABLED, &pwm->flags)) + if (pwm_is_enabled(pwm)) return; /* * If the PWM channel is disabled, write value to duty and period @@ -191,7 +191,7 @@ static void atmel_pwm_config_v2(struct pwm_chip *chip, struct pwm_device *pwm, { struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip); - if (test_bit(PWMF_ENABLED, &pwm->flags)) { + if (pwm_is_enabled(pwm)) { /* * If the PWM channel is enabled, using the duty update register * to update the value. |