Commit 7a58fc54 authored by Mathieu Othacehe's avatar Mathieu Othacehe Committed by Thierry Reding
Browse files

pwm: hibvt: Add hi3559v100 support 



Add support for the hi3559v100-shub-pwm and hisilicon,hi3559v100-pwm
platforms. They require a special quirk: the PWM has to be enabled twice
to force a duty_cycle refresh.

Signed-off-by: default avatarMathieu Othacehe <m.othacehe@gmail.com>
Signed-off-by: default avatarThierry Reding <thierry.reding@gmail.com>
parent 50e69143

drivers/pwm/pwm-hibvt.c

+26 −1
Original line number Diff line number Diff line
@@ -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);