67 static inline void pwm_busy_wait(struct vt8500_chip *vt8500, int nr, u8 bitmask)  in pwm_busy_wait()  argument
72 	while ((readl(vt8500->base + REG_STATUS) & mask) && --loops)  in pwm_busy_wait()
76 		dev_warn(vt8500->chip.dev, "Waiting for status bits 0x%x to clear timed out\n",  in pwm_busy_wait()
83 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_config()  local
89 	err = clk_enable(vt8500->clk);  in vt8500_pwm_config()
95 	c = clk_get_rate(vt8500->clk);  in vt8500_pwm_config()
108 		clk_disable(vt8500->clk);  in vt8500_pwm_config()
116 	writel(prescale, vt8500->base + REG_SCALAR(pwm->hwpwm));  in vt8500_pwm_config()
117 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_SCALAR_UPDATE);  in vt8500_pwm_config()
119 	writel(pv, vt8500->base + REG_PERIOD(pwm->hwpwm));  in vt8500_pwm_config()
120 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_PERIOD_UPDATE);  in vt8500_pwm_config()
122 	writel(dc, vt8500->base + REG_DUTY(pwm->hwpwm));  in vt8500_pwm_config()
123 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_DUTY_UPDATE);  in vt8500_pwm_config()
125 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_config()
127 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_config()
128 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_config()
130 	clk_disable(vt8500->clk);  in vt8500_pwm_config()
136 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_enable()  local
140 	err = clk_enable(vt8500->clk);  in vt8500_pwm_enable()
146 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_enable()
148 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_enable()
149 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_enable()
156 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_disable()  local
159 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_disable()
161 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_disable()
162 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_disable()
164 	clk_disable(vt8500->clk);  in vt8500_pwm_disable()
171 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_set_polarity()  local
174 	val = readl(vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_set_polarity()
181 	writel(val, vt8500->base + REG_CTRL(pwm->hwpwm));  in vt8500_pwm_set_polarity()
182 	pwm_busy_wait(vt8500, pwm->hwpwm, STATUS_CTRL_UPDATE);  in vt8500_pwm_set_polarity()