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authorBoris Brezillon <boris.brezillon@free-electrons.com>2015-07-01 10:21:47 +0200
committerThierry Reding <thierry.reding@gmail.com>2015-07-20 09:46:06 +0200
commit5c31252c4a86dc591c23f1a951edd52ad791ef0e (patch)
tree4a955e92027bbf95cd5fc9222245c0e4c8810a43 /drivers/pwm/pwm-atmel.c
parentd770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff)
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.c6
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.