diff options
Diffstat (limited to 'drivers/pwm/pwm-rcar.c')
| -rw-r--r-- | drivers/pwm/pwm-rcar.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c index 5b2b8ecc354c..2685577b6dd4 100644 --- a/drivers/pwm/pwm-rcar.c +++ b/drivers/pwm/pwm-rcar.c @@ -3,6 +3,9 @@ * R-Car PWM Timer driver * * Copyright (C) 2015 Renesas Electronics Corporation + * + * Limitations: + * - The hardware cannot generate a 0% duty cycle. */ #include <linux/clk.h> @@ -158,14 +161,12 @@ static void rcar_pwm_disable(struct rcar_pwm_chip *rp) } static int rcar_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, - struct pwm_state *state) + const struct pwm_state *state) { struct rcar_pwm_chip *rp = to_rcar_pwm_chip(chip); - struct pwm_state cur_state; int div, ret; /* This HW/driver only supports normal polarity */ - pwm_get_state(pwm, &cur_state); if (state->polarity != PWM_POLARITY_NORMAL) return -ENOTSUPP; @@ -187,7 +188,7 @@ static int rcar_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, /* The SYNC should be set to 0 even if rcar_pwm_set_counter failed */ rcar_pwm_update(rp, RCAR_PWMCR_SYNC, 0, RCAR_PWMCR); - if (!ret && state->enabled) + if (!ret) ret = rcar_pwm_enable(rp); return ret; |
