59 static inline void vt8500_pwm_busy_wait(struct vt8500_chip *vt8500, int nr, u8 bitmask)  in vt8500_pwm_busy_wait()  argument
64 	while ((readl(vt8500->base + REG_STATUS) & mask) && --loops)  in vt8500_pwm_busy_wait()
68 		dev_warn(vt8500->chip.dev, "Waiting for status bits 0x%x to clear timed out\n",  in vt8500_pwm_busy_wait()
75 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_config()  local
81 	err = clk_enable(vt8500->clk);  in vt8500_pwm_config()
87 	c = clk_get_rate(vt8500->clk);  in vt8500_pwm_config()
100 		clk_disable(vt8500->clk);  in vt8500_pwm_config()
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()
122 	clk_disable(vt8500->clk);  in vt8500_pwm_config()
128 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_enable()  local
132 	err = clk_enable(vt8500->clk);  in vt8500_pwm_enable()
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()
148 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_disable()  local
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()
156 	clk_disable(vt8500->clk);  in vt8500_pwm_disable()
163 	struct vt8500_chip *vt8500 = to_vt8500_chip(chip);  in vt8500_pwm_set_polarity()  local
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()
238 	struct vt8500_chip *vt8500;  in vt8500_pwm_probe()  local
247 	vt8500 = devm_kzalloc(&pdev->dev, sizeof(*vt8500), GFP_KERNEL);  in vt8500_pwm_probe()
248 	if (vt8500 == NULL)  in vt8500_pwm_probe()
251 	vt8500->chip.dev = &pdev->dev;  in vt8500_pwm_probe()
252 	vt8500->chip.ops = &vt8500_pwm_ops;  in vt8500_pwm_probe()
253 	vt8500->chip.npwm = VT8500_NR_PWMS;  in vt8500_pwm_probe()
255 	vt8500->clk = devm_clk_get(&pdev->dev, NULL);  in vt8500_pwm_probe()
256 	if (IS_ERR(vt8500->clk)) {  in vt8500_pwm_probe()
258 		return PTR_ERR(vt8500->clk);  in vt8500_pwm_probe()
261 	vt8500->base = devm_platform_ioremap_resource(pdev, 0);  in vt8500_pwm_probe()
262 	if (IS_ERR(vt8500->base))  in vt8500_pwm_probe()
263 		return PTR_ERR(vt8500->base);  in vt8500_pwm_probe()
265 	ret = clk_prepare(vt8500->clk);  in vt8500_pwm_probe()
271 	ret = pwmchip_add(&vt8500->chip);  in vt8500_pwm_probe()
274 		clk_unprepare(vt8500->clk);  in vt8500_pwm_probe()
278 	platform_set_drvdata(pdev, vt8500);  in vt8500_pwm_probe()
284 	struct vt8500_chip *vt8500 = platform_get_drvdata(pdev);  in vt8500_pwm_remove()  local
286 	pwmchip_remove(&vt8500->chip);  in vt8500_pwm_remove()
288 	clk_unprepare(vt8500->clk);  in vt8500_pwm_remove()