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| 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-tegra.c | |
| parent | d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff) | |
| download | lwn-5c31252c4a86dc591c23f1a951edd52ad791ef0e.tar.gz lwn-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-tegra.c')
| -rw-r--r-- | drivers/pwm/pwm-tegra.c | 6 |
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; |