diff options
| author |   Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2022-05-07 10:29:01 +0200 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2022-05-20 16:29:01 +0200 |
| commit | 5fa3b87fe8fb1ce941c6418539f7b8062c0dea9c (patch) | |
| tree | e81206fd0f0bbaa4e73ef68b61fa6c4a0f6aea65 /drivers/pwm | |
| parent | pwm: tegra: Implement .apply() callback (diff) | |
| download | linux-dev-5fa3b87fe8fb1ce941c6418539f7b8062c0dea9c.tar.xz linux-dev-5fa3b87fe8fb1ce941c6418539f7b8062c0dea9c.zip | |
pwm: lpc32xx: Implement .apply() callback
To eventually get rid of all legacy drivers convert this driver to the
modern world implementing .apply().
This just pushed a variant of pwm_apply_legacy() into the driver that was
slightly simplified because the driver doesn't provide a .set_polarity()
callback.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-lpc32xx.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c index ddeab5687cb8..86a0ea0f6955 100644 --- a/drivers/pwm/pwm-lpc32xx.c +++ b/drivers/pwm/pwm-lpc32xx.c @@ -88,10 +88,33 @@ static void lpc32xx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) clk_disable_unprepare(lpc32xx->clk); } +static int lpc32xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, + const struct pwm_state *state) +{ + int err; + + if (state->polarity != PWM_POLARITY_NORMAL) + return -EINVAL; + + if (!state->enabled) { + if (pwm->state.enabled) + lpc32xx_pwm_disable(chip, pwm); + + return 0; + } + + err = lpc32xx_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period); + if (err) + return err; + + if (!pwm->state.enabled) + err = lpc32xx_pwm_enable(chip, pwm); + + return err; +} + static const struct pwm_ops lpc32xx_pwm_ops = { - .config = lpc32xx_pwm_config, - .enable = lpc32xx_pwm_enable, - .disable = lpc32xx_pwm_disable, + .apply = lpc32xx_pwm_apply, .owner = THIS_MODULE, }; |