3  * PWM Controller Driver for HiSilicon BVT SoCs
15 #include <linux/pwm.h>
82 static void hibvt_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)  in hibvt_pwm_enable()  argument
86 	hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CTRL_ADDR(pwm->hwpwm),  in hibvt_pwm_enable()
90 static void hibvt_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)  in hibvt_pwm_disable()  argument
94 	hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CTRL_ADDR(pwm->hwpwm),  in hibvt_pwm_disable()
98 static void hibvt_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,  in hibvt_pwm_config()  argument
109 	hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CFG0_ADDR(pwm->hwpwm),  in hibvt_pwm_config()
112 	hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CFG1_ADDR(pwm->hwpwm),  in hibvt_pwm_config()
117 					struct pwm_device *pwm,  in hibvt_pwm_set_polarity()  argument
123 		hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CTRL_ADDR(pwm->hwpwm),  in hibvt_pwm_set_polarity()
126 		hibvt_pwm_set_bits(hi_pwm_chip->base, PWM_CTRL_ADDR(pwm->hwpwm),  in hibvt_pwm_set_polarity()
130 static int hibvt_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,  in hibvt_pwm_get_state()  argument
140 	value = readl(base + PWM_CFG0_ADDR(pwm->hwpwm));  in hibvt_pwm_get_state()
143 	value = readl(base + PWM_CFG1_ADDR(pwm->hwpwm));  in hibvt_pwm_get_state()
146 	value = readl(base + PWM_CTRL_ADDR(pwm->hwpwm));  in hibvt_pwm_get_state()
153 static int hibvt_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,  in hibvt_pwm_apply()  argument
158 	if (state->polarity != pwm->state.polarity)  in hibvt_pwm_apply()
159 		hibvt_pwm_set_polarity(chip, pwm, state->polarity);  in hibvt_pwm_apply()
161 	if (state->period != pwm->state.period ||  in hibvt_pwm_apply()
162 	    state->duty_cycle != pwm->state.duty_cycle) {  in hibvt_pwm_apply()
163 		hibvt_pwm_config(chip, pwm, state->duty_cycle, state->period);  in hibvt_pwm_apply()
166 		 * Some implementations require the PWM to be enabled twice  in hibvt_pwm_apply()
170 			hibvt_pwm_enable(chip, pwm);  in hibvt_pwm_apply()
173 	if (state->enabled != pwm->state.enabled) {  in hibvt_pwm_apply()
175 			hibvt_pwm_enable(chip, pwm);  in hibvt_pwm_apply()
177 			hibvt_pwm_disable(chip, pwm);  in hibvt_pwm_apply()
261 	{ .compatible = "hisilicon,hi3516cv300-pwm",
263 	{ .compatible = "hisilicon,hi3519v100-pwm",
265 	{ .compatible = "hisilicon,hi3559v100-shub-pwm",
267 	{ .compatible = "hisilicon,hi3559v100-pwm",
275 		.name = "hibvt-pwm",
284 MODULE_DESCRIPTION("HiSilicon BVT SoCs PWM driver");