82 static void kona_pwmc_prepare_for_settings(struct kona_pwmc *kp,  in kona_pwmc_prepare_for_settings()  argument
85 	unsigned int value = readl(kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_prepare_for_settings()
89 	writel(value, kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_prepare_for_settings()
98 static void kona_pwmc_apply_settings(struct kona_pwmc *kp, unsigned int chan)  in kona_pwmc_apply_settings()  argument
100 	unsigned int value = readl(kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_apply_settings()
105 	writel(value, kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_apply_settings()
114 	struct kona_pwmc *kp = to_kona_pwmc(chip);  in kona_pwmc_config()  local
130 	rate = clk_get_rate(kp->clk);  in kona_pwmc_config()
159 		kona_pwmc_prepare_for_settings(kp, chan);  in kona_pwmc_config()
161 		value = readl(kp->base + PRESCALE_OFFSET);  in kona_pwmc_config()
164 		writel(value, kp->base + PRESCALE_OFFSET);  in kona_pwmc_config()
166 		writel(pc, kp->base + PERIOD_COUNT_OFFSET(chan));  in kona_pwmc_config()
168 		writel(dc, kp->base + DUTY_CYCLE_HIGH_OFFSET(chan));  in kona_pwmc_config()
170 		kona_pwmc_apply_settings(kp, chan);  in kona_pwmc_config()
179 	struct kona_pwmc *kp = to_kona_pwmc(chip);  in kona_pwmc_set_polarity()  local
184 	ret = clk_prepare_enable(kp->clk);  in kona_pwmc_set_polarity()
190 	kona_pwmc_prepare_for_settings(kp, chan);  in kona_pwmc_set_polarity()
192 	value = readl(kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_set_polarity()
199 	writel(value, kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_set_polarity()
201 	kona_pwmc_apply_settings(kp, chan);  in kona_pwmc_set_polarity()
203 	clk_disable_unprepare(kp->clk);  in kona_pwmc_set_polarity()
210 	struct kona_pwmc *kp = to_kona_pwmc(chip);  in kona_pwmc_enable()  local
213 	ret = clk_prepare_enable(kp->clk);  in kona_pwmc_enable()
222 		clk_disable_unprepare(kp->clk);  in kona_pwmc_enable()
231 	struct kona_pwmc *kp = to_kona_pwmc(chip);  in kona_pwmc_disable()  local
235 	kona_pwmc_prepare_for_settings(kp, chan);  in kona_pwmc_disable()
238 	writel(0, kp->base + DUTY_CYCLE_HIGH_OFFSET(chan));  in kona_pwmc_disable()
239 	writel(0, kp->base + PERIOD_COUNT_OFFSET(chan));  in kona_pwmc_disable()
242 	value = readl(kp->base + PRESCALE_OFFSET);  in kona_pwmc_disable()
244 	writel(value, kp->base + PRESCALE_OFFSET);  in kona_pwmc_disable()
246 	kona_pwmc_apply_settings(kp, chan);  in kona_pwmc_disable()
248 	clk_disable_unprepare(kp->clk);  in kona_pwmc_disable()
261 	struct kona_pwmc *kp;  in kona_pwmc_probe()  local
267 	kp = devm_kzalloc(&pdev->dev, sizeof(*kp), GFP_KERNEL);  in kona_pwmc_probe()
268 	if (kp == NULL)  in kona_pwmc_probe()
271 	platform_set_drvdata(pdev, kp);  in kona_pwmc_probe()
273 	kp->chip.dev = &pdev->dev;  in kona_pwmc_probe()
274 	kp->chip.ops = &kona_pwm_ops;  in kona_pwmc_probe()
275 	kp->chip.base = -1;  in kona_pwmc_probe()
276 	kp->chip.npwm = 6;  in kona_pwmc_probe()
277 	kp->chip.of_xlate = of_pwm_xlate_with_flags;  in kona_pwmc_probe()
278 	kp->chip.of_pwm_n_cells = 3;  in kona_pwmc_probe()
279 	kp->chip.can_sleep = true;  in kona_pwmc_probe()
282 	kp->base = devm_ioremap_resource(&pdev->dev, res);  in kona_pwmc_probe()
283 	if (IS_ERR(kp->base))  in kona_pwmc_probe()
284 		return PTR_ERR(kp->base);  in kona_pwmc_probe()
286 	kp->clk = devm_clk_get(&pdev->dev, NULL);  in kona_pwmc_probe()
287 	if (IS_ERR(kp->clk)) {  in kona_pwmc_probe()
289 			PTR_ERR(kp->clk));  in kona_pwmc_probe()
290 		return PTR_ERR(kp->clk);  in kona_pwmc_probe()
293 	ret = clk_prepare_enable(kp->clk);  in kona_pwmc_probe()
300 	for (chan = 0; chan < kp->chip.npwm; chan++)  in kona_pwmc_probe()
303 	writel(value, kp->base + PWM_CONTROL_OFFSET);  in kona_pwmc_probe()
305 	clk_disable_unprepare(kp->clk);  in kona_pwmc_probe()
307 	ret = pwmchip_add_with_polarity(&kp->chip, PWM_POLARITY_INVERSED);  in kona_pwmc_probe()
316 	struct kona_pwmc *kp = platform_get_drvdata(pdev);  in kona_pwmc_remove()  local
319 	for (chan = 0; chan < kp->chip.npwm; chan++)  in kona_pwmc_remove()
320 		if (pwm_is_enabled(&kp->chip.pwms[chan]))  in kona_pwmc_remove()
321 			clk_disable_unprepare(kp->clk);  in kona_pwmc_remove()
323 	return pwmchip_remove(&kp->chip);  in kona_pwmc_remove()