diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-hibvt.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-hibvt.c b/drivers/pwm/pwm-hibvt.c index ffc803818c3c..a0b09603d13d 100644 --- a/drivers/pwm/pwm-hibvt.c +++ b/drivers/pwm/pwm-hibvt.c @@ -54,6 +54,7 @@ struct hibvt_pwm_chip { struct hibvt_pwm_soc { u32 num_pwms; + bool quirk_force_enable; }; static const struct hibvt_pwm_soc hi3516cv300_soc_info = { @@ -64,6 +65,16 @@ static const struct hibvt_pwm_soc hi3519v100_soc_info = { .num_pwms = 8, }; +static const struct hibvt_pwm_soc hi3559v100_shub_soc_info = { + .num_pwms = 8, + .quirk_force_enable = true, +}; + +static const struct hibvt_pwm_soc hi3559v100_soc_info = { + .num_pwms = 2, + .quirk_force_enable = true, +}; + static inline struct hibvt_pwm_chip *to_hibvt_pwm_chip(struct pwm_chip *chip) { return container_of(chip, struct hibvt_pwm_chip, chip); @@ -152,13 +163,23 @@ static void hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm, static int hibvt_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, struct pwm_state *state) { + struct hibvt_pwm_chip *hi_pwm_chip = to_hibvt_pwm_chip(chip); + if (state->polarity != pwm->state.polarity) hibvt_pwm_set_polarity(chip, pwm, state->polarity); if (state->period != pwm->state.period || - state->duty_cycle != pwm->state.duty_cycle) + state->duty_cycle != pwm->state.duty_cycle) { hibvt_pwm_config(chip, pwm, state->duty_cycle, state->period); + /* + * Some implementations require the PWM to be enabled twice + * each time the duty cycle is refreshed. + */ + if (hi_pwm_chip->soc->quirk_force_enable && state->enabled) + hibvt_pwm_enable(chip, pwm); + } + if (state->enabled != pwm->state.enabled) { if (state->enabled) hibvt_pwm_enable(chip, pwm); @@ -259,6 +280,10 @@ static const struct of_device_id hibvt_pwm_of_match[] = { .data = &hi3516cv300_soc_info }, { .compatible = "hisilicon,hi3519v100-pwm", .data = &hi3519v100_soc_info }, + { .compatible = "hisilicon,hi3559v100-shub-pwm", + .data = &hi3559v100_shub_soc_info }, + { .compatible = "hisilicon,hi3559v100-pwm", + .data = &hi3559v100_soc_info }, { } }; MODULE_DEVICE_TABLE(of, hibvt_pwm_of_match); |