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| author |   Takashi Iwai <tiwai@suse.de> | 2020-09-09 18:26:07 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-09-09 18:26:48 +0200 |
| commit | 9ddb236f13594b34a12dacf69a5adca7a1aef35e (patch) | |
| tree | 1dc1f6e54962a2e3ad3d56c894522cb4b1ddce93 /drivers/pwm/pwm-bcm-iproc.c | |
| parent | ALSA: vx: vx_pcm: remove redundant assignment (diff) | |
| parent | ALSA: hda/realtek - The Mic on a RedmiBook doesn't work (diff) | |
| download | linux-dev-9ddb236f13594b34a12dacf69a5adca7a1aef35e.tar.xz linux-dev-9ddb236f13594b34a12dacf69a5adca7a1aef35e.zip | |
Merge branch 'for-linus' into for-next
Back-merge to apply the tasklet conversion patches that are based
on the already applied tasklet API changes on 5.9-rc4.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/pwm/pwm-bcm-iproc.c')
| -rw-r--r-- | drivers/pwm/pwm-bcm-iproc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c index 1f829edd8ee7..79b1e58e946d 100644 --- a/drivers/pwm/pwm-bcm-iproc.c +++ b/drivers/pwm/pwm-bcm-iproc.c @@ -85,8 +85,6 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm, u64 tmp, multi, rate; u32 value, prescale; - rate = clk_get_rate(ip->clk); - value = readl(ip->base + IPROC_PWM_CTRL_OFFSET); if (value & BIT(IPROC_PWM_CTRL_EN_SHIFT(pwm->hwpwm))) @@ -99,6 +97,13 @@ static void iproc_pwmc_get_state(struct pwm_chip *chip, struct pwm_device *pwm, else state->polarity = PWM_POLARITY_INVERSED; + rate = clk_get_rate(ip->clk); + if (rate == 0) { + state->period = 0; + state->duty_cycle = 0; + return; + } + value = readl(ip->base + IPROC_PWM_PRESCALE_OFFSET); prescale = value >> IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm); prescale &= IPROC_PWM_PRESCALE_MAX; @@ -143,8 +148,7 @@ static int iproc_pwmc_apply(struct pwm_chip *chip, struct pwm_device *pwm, value = rate * state->duty_cycle; duty = div64_u64(value, div); - if (period < IPROC_PWM_PERIOD_MIN || - duty < IPROC_PWM_DUTY_CYCLE_MIN) + if (period < IPROC_PWM_PERIOD_MIN) return -EINVAL; if (period <= IPROC_PWM_PERIOD_MAX && |