5.4-stable review patch. If anyone has any objections, please let me know.
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From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ Upstream commit 758de66f4bd2cac2b1d71db917c65c3d611d4e74 ]
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 Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Signed-off-by: Thierry Reding thierry.reding@gmail.com Stable-dep-of: f21d136caf81 ("pwm: mediatek: Fix duty and period setting") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pwm/pwm-mediatek.c | 29 ++++++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-)
--- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -210,10 +210,33 @@ static void pwm_mediatek_disable(struct pwm_mediatek_clk_disable(chip, pwm); }
+static int pwm_mediatek_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) + pwm_mediatek_disable(chip, pwm); + + return 0; + } + + err = pwm_mediatek_config(pwm->chip, pwm, state->duty_cycle, state->period); + if (err) + return err; + + if (!pwm->state.enabled) + err = pwm_mediatek_enable(chip, pwm); + + return err; +} + static const struct pwm_ops pwm_mediatek_ops = { - .config = pwm_mediatek_config, - .enable = pwm_mediatek_enable, - .disable = pwm_mediatek_disable, + .apply = pwm_mediatek_apply, .owner = THIS_MODULE, };