diff options
Diffstat (limited to 'drivers/pwm/pwm-jz4740.c')
| -rw-r--r-- | drivers/pwm/pwm-jz4740.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c index f901e8a0d33d..9d78cc21cb12 100644 --- a/drivers/pwm/pwm-jz4740.c +++ b/drivers/pwm/pwm-jz4740.c @@ -2,6 +2,11 @@ /* * Copyright (C) 2010, Lars-Peter Clausen <[email protected]> * JZ4740 platform PWM support + * + * Limitations: + * - The .apply callback doesn't complete the currently running period before + * reconfiguring the hardware. + * - Each period starts with the inactive part. */ #include <linux/clk.h> @@ -83,7 +88,7 @@ static void jz4740_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) } static int jz4740_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, - struct pwm_state *state) + const struct pwm_state *state) { struct jz4740_pwm_chip *jz4740 = to_jz4740(pwm->chip); unsigned long long tmp; |