31 #define REG_CTRL(pwm)		(((pwm) << 4) + 0x00)  argument
32 #define REG_SCALAR(pwm)		(((pwm) << 4) + 0x04)  argument
33 #define REG_PERIOD(pwm)		(((pwm) << 4) + 0x08)  argument
34 #define REG_DUTY(pwm)		(((pwm) << 4) + 0x0C)  argument
72 static int vt8500_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,  in vt8500_pwm_config()  argument
108 	writel(prescale, vt8500->base + REG_SCALAR(pwm->hwpwm));  in vt8500_pwm_config()
109 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_SCALAR_UPDATE);  in vt8500_pwm_config()
111 	writel(pv, vt8500->base + REG_PERIOD(pwm->hwpwm));  in vt8500_pwm_config()
112 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_PERIOD_UPDATE);  in vt8500_pwm_config()
114 	writel(dc, vt8500->base + REG_DUTY(pwm->hwpwm));  in vt8500_pwm_config()
115 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_DUTY_UPDATE);  in vt8500_pwm_config()
117 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_config()
119 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_config()
120 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_config()
126 static int vt8500_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)  in vt8500_pwm_enable()  argument
138 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_enable()
140 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_enable()
141 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_enable()
146 static void vt8500_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)  in vt8500_pwm_disable()  argument
151 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_disable()
153 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_disable()
154 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_disable()
160 				   struct pwm_device *pwm,  in vt8500_pwm_set_polarity()  argument
166 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_set_polarity()
173 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_set_polarity()
174 	vt8500_pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_set_polarity()
179 static int vt8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,  in vt8500_pwm_apply()  argument
183 	bool enabled = pwm->state.enabled;  in vt8500_pwm_apply()
185 	if (state->polarity != pwm->state.polarity) {  in vt8500_pwm_apply()
191 			vt8500_pwm_disable(chip, pwm);  in vt8500_pwm_apply()
196 		err = vt8500_pwm_set_polarity(chip, pwm, state->polarity);  in vt8500_pwm_apply()
203 			vt8500_pwm_disable(chip, pwm);  in vt8500_pwm_apply()
215 	err = vt8500_pwm_config(pwm->chip, pwm, state->duty_cycle, state->period);  in vt8500_pwm_apply()
220 		err = vt8500_pwm_enable(chip, pwm);  in vt8500_pwm_apply()