49 static inline u32 pwm_lpss_read(const struct pwm_device *pwm)  in pwm_lpss_read()  argument
51 	struct pwm_lpss_chip *lpwm = to_lpwm(pwm->chip);  in pwm_lpss_read()
53 	return readl(lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM);  in pwm_lpss_read()
56 static inline void pwm_lpss_write(const struct pwm_device *pwm, u32 value)  in pwm_lpss_write()  argument
58 	struct pwm_lpss_chip *lpwm = to_lpwm(pwm->chip);  in pwm_lpss_write()
60 	writel(value, lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM);  in pwm_lpss_write()
63 static int pwm_lpss_wait_for_update(struct pwm_device *pwm)  in pwm_lpss_wait_for_update()  argument
65 	struct pwm_lpss_chip *lpwm = to_lpwm(pwm->chip);  in pwm_lpss_wait_for_update()
66 	const void __iomem *addr = lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM;  in pwm_lpss_wait_for_update()
84 		dev_err(pwm->chip->dev, "PWM_SW_UPDATE was not cleared\n");  in pwm_lpss_wait_for_update()
89 static inline int pwm_lpss_is_updating(struct pwm_device *pwm)  in pwm_lpss_is_updating()  argument
91 	return (pwm_lpss_read(pwm) & PWM_SW_UPDATE) ? -EBUSY : 0;  in pwm_lpss_is_updating()
94 static void pwm_lpss_prepare(struct pwm_lpss_chip *lpwm, struct pwm_device *pwm,  in pwm_lpss_prepare()  argument
117 	orig_ctrl = ctrl = pwm_lpss_read(pwm);  in pwm_lpss_prepare()
125 		pwm_lpss_write(pwm, ctrl);  in pwm_lpss_prepare()
126 		pwm_lpss_write(pwm, ctrl | PWM_SW_UPDATE);  in pwm_lpss_prepare()
130 static inline void pwm_lpss_cond_enable(struct pwm_device *pwm, bool cond)  in pwm_lpss_cond_enable()  argument
133 		pwm_lpss_write(pwm, pwm_lpss_read(pwm) | PWM_ENABLE);  in pwm_lpss_cond_enable()
136 static int pwm_lpss_apply(struct pwm_chip *chip, struct pwm_device *pwm,  in pwm_lpss_apply()  argument
143 		if (!pwm_is_enabled(pwm)) {  in pwm_lpss_apply()
145 			ret = pwm_lpss_is_updating(pwm);  in pwm_lpss_apply()
150 			pwm_lpss_prepare(lpwm, pwm, state->duty_cycle, state->period);  in pwm_lpss_apply()
151 			pwm_lpss_cond_enable(pwm, lpwm->info->bypass == false);  in pwm_lpss_apply()
152 			ret = pwm_lpss_wait_for_update(pwm);  in pwm_lpss_apply()
157 			pwm_lpss_cond_enable(pwm, lpwm->info->bypass == true);  in pwm_lpss_apply()
159 			ret = pwm_lpss_is_updating(pwm);  in pwm_lpss_apply()
162 			pwm_lpss_prepare(lpwm, pwm, state->duty_cycle, state->period);  in pwm_lpss_apply()
163 			return pwm_lpss_wait_for_update(pwm);  in pwm_lpss_apply()
165 	} else if (pwm_is_enabled(pwm)) {  in pwm_lpss_apply()
166 		pwm_lpss_write(pwm, pwm_lpss_read(pwm) & ~PWM_ENABLE);  in pwm_lpss_apply()