43 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_request()  local
46 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
49 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
56 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_free()  local
59 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
61 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
67 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_config()  local
68 	unsigned long rate = clk_get_rate(pc->clk);  in bcm2835_pwm_config()
72 		dev_err(pc->dev, "failed to get clock rate\n");  in bcm2835_pwm_config()
79 		dev_err(pc->dev, "period %d not supported, minimum %d\n",  in bcm2835_pwm_config()
84 	writel(duty_ns / scaler, pc->base + DUTY(pwm->hwpwm));  in bcm2835_pwm_config()
85 	writel(period_ns / scaler, pc->base + PERIOD(pwm->hwpwm));  in bcm2835_pwm_config()
92 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_enable()  local
95 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_enable()
97 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_enable()
104 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_disable()  local
107 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_disable()
109 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_disable()
115 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_set_polarity()  local
118 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_set_polarity()
125 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_set_polarity()
142 	struct bcm2835_pwm *pc;  in bcm2835_pwm_probe()  local
146 	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);  in bcm2835_pwm_probe()
147 	if (!pc)  in bcm2835_pwm_probe()
150 	pc->dev = &pdev->dev;  in bcm2835_pwm_probe()
153 	pc->base = devm_ioremap_resource(&pdev->dev, res);  in bcm2835_pwm_probe()
154 	if (IS_ERR(pc->base))  in bcm2835_pwm_probe()
155 		return PTR_ERR(pc->base);  in bcm2835_pwm_probe()
157 	pc->clk = devm_clk_get(&pdev->dev, NULL);  in bcm2835_pwm_probe()
158 	if (IS_ERR(pc->clk)) {  in bcm2835_pwm_probe()
159 		dev_err(&pdev->dev, "clock not found: %ld\n", PTR_ERR(pc->clk));  in bcm2835_pwm_probe()
160 		return PTR_ERR(pc->clk);  in bcm2835_pwm_probe()
163 	ret = clk_prepare_enable(pc->clk);  in bcm2835_pwm_probe()
167 	pc->chip.dev = &pdev->dev;  in bcm2835_pwm_probe()
168 	pc->chip.ops = &bcm2835_pwm_ops;  in bcm2835_pwm_probe()
169 	pc->chip.npwm = 2;  in bcm2835_pwm_probe()
170 	pc->chip.of_xlate = of_pwm_xlate_with_flags;  in bcm2835_pwm_probe()
171 	pc->chip.of_pwm_n_cells = 3;  in bcm2835_pwm_probe()
173 	platform_set_drvdata(pdev, pc);  in bcm2835_pwm_probe()
175 	ret = pwmchip_add(&pc->chip);  in bcm2835_pwm_probe()
182 	clk_disable_unprepare(pc->clk);  in bcm2835_pwm_probe()
188 	struct bcm2835_pwm *pc = platform_get_drvdata(pdev);  in bcm2835_pwm_remove()  local
190 	clk_disable_unprepare(pc->clk);  in bcm2835_pwm_remove()
192 	return pwmchip_remove(&pc->chip);  in bcm2835_pwm_remove()