44 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_request()  local
47 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
50 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
57 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_free()  local
60 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
62 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
68 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_config()  local
71 		dev_err(pc->dev, "period %d not supported, minimum %d\n",  in bcm2835_pwm_config()
76 	writel(duty_ns / pc->scaler, pc->base + DUTY(pwm->hwpwm));  in bcm2835_pwm_config()
77 	writel(period_ns / pc->scaler, pc->base + PERIOD(pwm->hwpwm));  in bcm2835_pwm_config()
84 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_enable()  local
87 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_enable()
89 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_enable()
96 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_disable()  local
99 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_disable()
101 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_disable()
107 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_set_polarity()  local
110 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_set_polarity()
117 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_set_polarity()
134 	struct bcm2835_pwm *pc;  in bcm2835_pwm_probe()  local
138 	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);  in bcm2835_pwm_probe()
139 	if (!pc)  in bcm2835_pwm_probe()
142 	pc->dev = &pdev->dev;  in bcm2835_pwm_probe()
145 	pc->base = devm_ioremap_resource(&pdev->dev, res);  in bcm2835_pwm_probe()
146 	if (IS_ERR(pc->base))  in bcm2835_pwm_probe()
147 		return PTR_ERR(pc->base);  in bcm2835_pwm_probe()
149 	pc->clk = devm_clk_get(&pdev->dev, NULL);  in bcm2835_pwm_probe()
150 	if (IS_ERR(pc->clk)) {  in bcm2835_pwm_probe()
151 		dev_err(&pdev->dev, "clock not found: %ld\n", PTR_ERR(pc->clk));  in bcm2835_pwm_probe()
152 		return PTR_ERR(pc->clk);  in bcm2835_pwm_probe()
155 	ret = clk_prepare_enable(pc->clk);  in bcm2835_pwm_probe()
159 	pc->scaler = NSEC_PER_SEC / clk_get_rate(pc->clk);  in bcm2835_pwm_probe()
161 	pc->chip.dev = &pdev->dev;  in bcm2835_pwm_probe()
162 	pc->chip.ops = &bcm2835_pwm_ops;  in bcm2835_pwm_probe()
163 	pc->chip.npwm = 2;  in bcm2835_pwm_probe()
165 	platform_set_drvdata(pdev, pc);  in bcm2835_pwm_probe()
167 	ret = pwmchip_add(&pc->chip);  in bcm2835_pwm_probe()
174 	clk_disable_unprepare(pc->clk);  in bcm2835_pwm_probe()
180 	struct bcm2835_pwm *pc = platform_get_drvdata(pdev);  in bcm2835_pwm_remove()  local
182 	clk_disable_unprepare(pc->clk);  in bcm2835_pwm_remove()
184 	return pwmchip_remove(&pc->chip);  in bcm2835_pwm_remove()