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authorPascal Roeleven <dev@pascalroeleven.nl>2020-03-17 16:59:03 +0100
committerThierry Reding <thierry.reding@gmail.com>2020-03-30 18:03:08 +0200
commitd3817a647059a3e5f8791e9b7225d194985aa75f (patch)
tree91d887b190019c58166e2bdfcc10ac0e0e3fc957 /drivers/pwm/pwm-sun4i.c
parent6b28fb6f3ca30bd98815041b4eb795743706402d (diff)
pwm: sun4i: Remove redundant needs_delay
'needs_delay' does now always evaluate to true, so remove all occurrences. Signed-off-by: Pascal Roeleven <dev@pascalroeleven.nl> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-sun4i.c')
-rw-r--r--drivers/pwm/pwm-sun4i.c13
1 files changed, 2 insertions, 11 deletions
diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index 3e3efa6c768f..5c677c563349 100644
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -90,7 +90,6 @@ struct sun4i_pwm_chip {
spinlock_t ctrl_lock;
const struct sun4i_pwm_data *data;
unsigned long next_period[2];
- bool needs_delay[2];
};
static inline struct sun4i_pwm_chip *to_sun4i_pwm_chip(struct pwm_chip *chip)
@@ -287,7 +286,6 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
sun4i_pwm_writel(sun4i_pwm, val, PWM_CH_PRD(pwm->hwpwm));
sun4i_pwm->next_period[pwm->hwpwm] = jiffies +
usecs_to_jiffies(cstate.period / 1000 + 1);
- sun4i_pwm->needs_delay[pwm->hwpwm] = true;
if (state->polarity != PWM_POLARITY_NORMAL)
ctrl &= ~BIT_CH(PWM_ACT_STATE, pwm->hwpwm);
@@ -298,7 +296,7 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (state->enabled) {
ctrl |= BIT_CH(PWM_EN, pwm->hwpwm);
- } else if (!sun4i_pwm->needs_delay[pwm->hwpwm]) {
+ } else {
ctrl &= ~BIT_CH(PWM_EN, pwm->hwpwm);
ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm);
}
@@ -310,15 +308,9 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
if (state->enabled)
return 0;
- if (!sun4i_pwm->needs_delay[pwm->hwpwm]) {
- clk_disable_unprepare(sun4i_pwm->clk);
- return 0;
- }
-
/* We need a full period to elapse before disabling the channel. */
now = jiffies;
- if (sun4i_pwm->needs_delay[pwm->hwpwm] &&
- time_before(now, sun4i_pwm->next_period[pwm->hwpwm])) {
+ if (time_before(now, sun4i_pwm->next_period[pwm->hwpwm])) {
delay_us = jiffies_to_usecs(sun4i_pwm->next_period[pwm->hwpwm] -
now);
if ((delay_us / 500) > MAX_UDELAY_MS)
@@ -326,7 +318,6 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
else
usleep_range(delay_us, delay_us * 2);
}
- sun4i_pwm->needs_delay[pwm->hwpwm] = false;
spin_lock(&sun4i_pwm->ctrl_lock);
ctrl = sun4i_pwm_readl(sun4i_pwm, PWM_CTRL_REG);