197 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_calculate_cprd_and_pres()  local
210 	shift = fls(cycles) - atmel_pwm->data->cfg.period_bits;  in atmel_pwm_calculate_cprd_and_pres()
242 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_update_cdty()  local
245 	if (atmel_pwm->data->regs.duty_upd ==  in atmel_pwm_update_cdty()
246 	    atmel_pwm->data->regs.period_upd) {  in atmel_pwm_update_cdty()
247 		val = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm, PWM_CMR);  in atmel_pwm_update_cdty()
249 		atmel_pwm_ch_writel(atmel_pwm, pwm->hwpwm, PWM_CMR, val);  in atmel_pwm_update_cdty()
252 	atmel_pwm_ch_writel(atmel_pwm, pwm->hwpwm,  in atmel_pwm_update_cdty()
253 			    atmel_pwm->data->regs.duty_upd, cdty);  in atmel_pwm_update_cdty()
254 	atmel_pwm_set_pending(atmel_pwm, pwm->hwpwm);  in atmel_pwm_update_cdty()
261 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_set_cprd_cdty()  local
263 	atmel_pwm_ch_writel(atmel_pwm, pwm->hwpwm,  in atmel_pwm_set_cprd_cdty()
264 			    atmel_pwm->data->regs.duty, cdty);  in atmel_pwm_set_cprd_cdty()
265 	atmel_pwm_ch_writel(atmel_pwm, pwm->hwpwm,  in atmel_pwm_set_cprd_cdty()
266 			    atmel_pwm->data->regs.period, cprd);  in atmel_pwm_set_cprd_cdty()
272 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_disable()  local
275 	atmel_pwm_wait_nonpending(atmel_pwm, pwm->hwpwm);  in atmel_pwm_disable()
277 	atmel_pwm_writel(atmel_pwm, PWM_DIS, 1 << pwm->hwpwm);  in atmel_pwm_disable()
285 	while ((atmel_pwm_readl(atmel_pwm, PWM_SR) & (1 << pwm->hwpwm)) &&  in atmel_pwm_disable()
290 		clk_disable(atmel_pwm->clk);  in atmel_pwm_disable()
296 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_apply()  local
305 		unsigned long clkrate = clk_get_rate(atmel_pwm->clk);  in atmel_pwm_apply()
310 			u32 cmr = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm, PWM_CMR);  in atmel_pwm_apply()
312 			cprd = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm,  in atmel_pwm_apply()
313 						  atmel_pwm->data->regs.period);  in atmel_pwm_apply()
334 			ret = clk_enable(atmel_pwm->clk);  in atmel_pwm_apply()
342 		val = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm, PWM_CMR);  in atmel_pwm_apply()
348 		atmel_pwm_ch_writel(atmel_pwm, pwm->hwpwm, PWM_CMR, val);  in atmel_pwm_apply()
350 		atmel_pwm_writel(atmel_pwm, PWM_ENA, 1 << pwm->hwpwm);  in atmel_pwm_apply()
361 	struct atmel_pwm_chip *atmel_pwm = to_atmel_pwm_chip(chip);  in atmel_pwm_get_state()  local
364 	sr = atmel_pwm_readl(atmel_pwm, PWM_SR);  in atmel_pwm_get_state()
365 	cmr = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm, PWM_CMR);  in atmel_pwm_get_state()
368 		unsigned long rate = clk_get_rate(atmel_pwm->clk);  in atmel_pwm_get_state()
374 		cprd = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm,  in atmel_pwm_get_state()
375 					  atmel_pwm->data->regs.period);  in atmel_pwm_get_state()
381 		atmel_pwm_wait_nonpending(atmel_pwm, pwm->hwpwm);  in atmel_pwm_get_state()
383 		cdty = atmel_pwm_ch_readl(atmel_pwm, pwm->hwpwm,  in atmel_pwm_get_state()
384 					  atmel_pwm->data->regs.duty);  in atmel_pwm_get_state()
466 static int atmel_pwm_enable_clk_if_on(struct atmel_pwm_chip *atmel_pwm, bool on)  in atmel_pwm_enable_clk_if_on()  argument
472 	sr = atmel_pwm_readl(atmel_pwm, PWM_SR) & PWM_SR_ALL_CH_MASK;  in atmel_pwm_enable_clk_if_on()
476 	cnt = bitmap_weight(&sr, atmel_pwm->chip.npwm);  in atmel_pwm_enable_clk_if_on()
482 		ret = clk_enable(atmel_pwm->clk);  in atmel_pwm_enable_clk_if_on()
484 			dev_err(atmel_pwm->chip.dev,  in atmel_pwm_enable_clk_if_on()
497 		clk_disable(atmel_pwm->clk);  in atmel_pwm_enable_clk_if_on()
504 	struct atmel_pwm_chip *atmel_pwm;  in atmel_pwm_probe()  local
507 	atmel_pwm = devm_kzalloc(&pdev->dev, sizeof(*atmel_pwm), GFP_KERNEL);  in atmel_pwm_probe()
508 	if (!atmel_pwm)  in atmel_pwm_probe()
511 	atmel_pwm->data = of_device_get_match_data(&pdev->dev);  in atmel_pwm_probe()
513 	atmel_pwm->update_pending = 0;  in atmel_pwm_probe()
514 	spin_lock_init(&atmel_pwm->lock);  in atmel_pwm_probe()
516 	atmel_pwm->base = devm_platform_ioremap_resource(pdev, 0);  in atmel_pwm_probe()
517 	if (IS_ERR(atmel_pwm->base))  in atmel_pwm_probe()
518 		return PTR_ERR(atmel_pwm->base);  in atmel_pwm_probe()
520 	atmel_pwm->clk = devm_clk_get_prepared(&pdev->dev, NULL);  in atmel_pwm_probe()
521 	if (IS_ERR(atmel_pwm->clk))  in atmel_pwm_probe()
522 		return dev_err_probe(&pdev->dev, PTR_ERR(atmel_pwm->clk),  in atmel_pwm_probe()
525 	atmel_pwm->chip.dev = &pdev->dev;  in atmel_pwm_probe()
526 	atmel_pwm->chip.ops = &atmel_pwm_ops;  in atmel_pwm_probe()
527 	atmel_pwm->chip.npwm = 4;  in atmel_pwm_probe()
529 	ret = atmel_pwm_enable_clk_if_on(atmel_pwm, true);  in atmel_pwm_probe()
533 	ret = devm_pwmchip_add(&pdev->dev, &atmel_pwm->chip);  in atmel_pwm_probe()
542 	atmel_pwm_enable_clk_if_on(atmel_pwm, false);  in atmel_pwm_probe()