41 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_request()  local
44 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
47 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_request()
54 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_free()  local
57 	value = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
59 	writel(value, pc->base + PWM_CONTROL);  in bcm2835_pwm_free()
66 	struct bcm2835_pwm *pc = to_bcm2835_pwm(chip);  in bcm2835_pwm_apply()  local
86 	max_period = DIV_ROUND_UP_ULL((u64)U32_MAX * NSEC_PER_SEC + NSEC_PER_SEC / 2, pc->rate) - 1;  in bcm2835_pwm_apply()
92 	period_cycles = DIV_ROUND_CLOSEST_ULL(state->period * pc->rate, NSEC_PER_SEC);  in bcm2835_pwm_apply()
98 	writel(period_cycles, pc->base + PERIOD(pwm->hwpwm));  in bcm2835_pwm_apply()
101 	val = DIV_ROUND_CLOSEST_ULL(state->duty_cycle * pc->rate, NSEC_PER_SEC);  in bcm2835_pwm_apply()
102 	writel(val, pc->base + DUTY(pwm->hwpwm));  in bcm2835_pwm_apply()
105 	val = readl(pc->base + PWM_CONTROL);  in bcm2835_pwm_apply()
118 	writel(val, pc->base + PWM_CONTROL);  in bcm2835_pwm_apply()
138 	struct bcm2835_pwm *pc;  in bcm2835_pwm_probe()  local
141 	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);  in bcm2835_pwm_probe()
142 	if (!pc)  in bcm2835_pwm_probe()
145 	pc->dev = &pdev->dev;  in bcm2835_pwm_probe()
147 	pc->base = devm_platform_ioremap_resource(pdev, 0);  in bcm2835_pwm_probe()
148 	if (IS_ERR(pc->base))  in bcm2835_pwm_probe()
149 		return PTR_ERR(pc->base);  in bcm2835_pwm_probe()
151 	pc->clk = devm_clk_get_enabled(&pdev->dev, NULL);  in bcm2835_pwm_probe()
152 	if (IS_ERR(pc->clk))  in bcm2835_pwm_probe()
153 		return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk),  in bcm2835_pwm_probe()
156 	ret = clk_rate_exclusive_get(pc->clk);  in bcm2835_pwm_probe()
162 				       pc->clk);  in bcm2835_pwm_probe()
166 	pc->rate = clk_get_rate(pc->clk);  in bcm2835_pwm_probe()
167 	if (!pc->rate)  in bcm2835_pwm_probe()
171 	pc->chip.dev = &pdev->dev;  in bcm2835_pwm_probe()
172 	pc->chip.ops = &bcm2835_pwm_ops;  in bcm2835_pwm_probe()
173 	pc->chip.atomic = true;  in bcm2835_pwm_probe()
174 	pc->chip.npwm = 2;  in bcm2835_pwm_probe()
176 	platform_set_drvdata(pdev, pc);  in bcm2835_pwm_probe()
178 	ret = devm_pwmchip_add(&pdev->dev, &pc->chip);  in bcm2835_pwm_probe()
188 	struct bcm2835_pwm *pc = dev_get_drvdata(dev);  in bcm2835_pwm_suspend()  local
190 	clk_disable_unprepare(pc->clk);  in bcm2835_pwm_suspend()
197 	struct bcm2835_pwm *pc = dev_get_drvdata(dev);  in bcm2835_pwm_resume()  local
199 	return clk_prepare_enable(pc->clk);  in bcm2835_pwm_resume()