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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c
index cabd7d8e05cc..d4de0607b502 100644
--- a/drivers/pwm/pwm-tegra.c
+++ b/drivers/pwm/pwm-tegra.c
@@ -112,7 +112,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
          * If the PWM channel is disabled, make sure to turn on the clock
          * before writing the register. Otherwise, keep it enabled.
          */
-        if (!test_bit(PWMF_ENABLED, &pwm->flags)) {
+        if (!pwm_is_enabled(pwm)) {
                 err = clk_prepare_enable(pc->clk);
                 if (err < 0)
                         return err;
@@ -124,7 +124,7 @@ static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
         /*
          * If the PWM is not enabled, turn the clock off again to save power.
          */
-        if (!test_bit(PWMF_ENABLED, &pwm->flags))
+        if (!pwm_is_enabled(pwm))
                 clk_disable_unprepare(pc->clk);
 
         return 0;
@@ -214,7 +214,7 @@ static int tegra_pwm_remove(struct platform_device *pdev)
         for (i = 0; i < NUM_PWM; i++) {
                 struct pwm_device *pwm = &pc->chip.pwms[i];
 
-                if (!test_bit(PWMF_ENABLED, &pwm->flags))
+                if (!pwm_is_enabled(pwm))
                         if (clk_prepare_enable(pc->clk) < 0)
                                 continue;