83 	struct pwm_chip chip;  member
109 struct samsung_pwm_chip *to_samsung_pwm_chip(struct pwm_chip *chip)  in to_samsung_pwm_chip()  argument
111 	return container_of(chip, struct samsung_pwm_chip, chip);  in to_samsung_pwm_chip()
140 static int pwm_samsung_is_tdiv(struct samsung_pwm_chip *chip, unsigned int chan)  in pwm_samsung_is_tdiv()  argument
142 	struct samsung_pwm_variant *variant = &chip->variant;  in pwm_samsung_is_tdiv()
145 	reg = readl(chip->base + REG_TCFG1);  in pwm_samsung_is_tdiv()
152 static unsigned long pwm_samsung_get_tin_rate(struct samsung_pwm_chip *chip,  in pwm_samsung_get_tin_rate()  argument
158 	rate = clk_get_rate(chip->base_clk);  in pwm_samsung_get_tin_rate()
160 	reg = readl(chip->base + REG_TCFG0);  in pwm_samsung_get_tin_rate()
168 static unsigned long pwm_samsung_calc_tin(struct samsung_pwm_chip *chip,  in pwm_samsung_calc_tin()  argument
171 	struct samsung_pwm_variant *variant = &chip->variant;  in pwm_samsung_calc_tin()
176 	if (!pwm_samsung_is_tdiv(chip, chan)) {  in pwm_samsung_calc_tin()
177 		clk = (chan < 2) ? chip->tclk0 : chip->tclk1;  in pwm_samsung_calc_tin()
184 		dev_warn(chip->chip.dev,  in pwm_samsung_calc_tin()
188 	rate = pwm_samsung_get_tin_rate(chip, chan);  in pwm_samsung_calc_tin()
189 	dev_dbg(chip->chip.dev, "tin parent at %lu\n", rate);  in pwm_samsung_calc_tin()
200 	pwm_samsung_set_divisor(chip, chan, BIT(div));  in pwm_samsung_calc_tin()
205 static int pwm_samsung_request(struct pwm_chip *chip, struct pwm_device *pwm)  in pwm_samsung_request()  argument
207 	struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);  in pwm_samsung_request()
211 		dev_warn(chip->dev,  in pwm_samsung_request()
217 	our_chan = devm_kzalloc(chip->dev, sizeof(*our_chan), GFP_KERNEL);  in pwm_samsung_request()
226 static void pwm_samsung_free(struct pwm_chip *chip, struct pwm_device *pwm)  in pwm_samsung_free()  argument
228 	devm_kfree(chip->dev, pwm_get_chip_data(pwm));  in pwm_samsung_free()
232 static int pwm_samsung_enable(struct pwm_chip *chip, struct pwm_device *pwm)  in pwm_samsung_enable()  argument
234 	struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);  in pwm_samsung_enable()
256 static void pwm_samsung_disable(struct pwm_chip *chip, struct pwm_device *pwm)  in pwm_samsung_disable()  argument
258 	struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);  in pwm_samsung_disable()
272 static void pwm_samsung_manual_update(struct samsung_pwm_chip *chip,  in pwm_samsung_manual_update()  argument
281 	tcon = readl(chip->base + REG_TCON);  in pwm_samsung_manual_update()
283 	writel(tcon, chip->base + REG_TCON);  in pwm_samsung_manual_update()
286 	writel(tcon, chip->base + REG_TCON);  in pwm_samsung_manual_update()
291 static int pwm_samsung_config(struct pwm_chip *chip, struct pwm_device *pwm,  in pwm_samsung_config()  argument
294 	struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);  in pwm_samsung_config()
322 		dev_dbg(our_chip->chip.dev, "duty_ns=%d, period_ns=%d (%u)\n",  in pwm_samsung_config()
327 		dev_dbg(our_chip->chip.dev, "tin_rate=%lu\n", tin_rate);  in pwm_samsung_config()
351 	dev_dbg(our_chip->chip.dev,  in pwm_samsung_config()
364 		dev_dbg(our_chip->chip.dev, "Forcing manual update");  in pwm_samsung_config()
375 static void pwm_samsung_set_invert(struct samsung_pwm_chip *chip,  in pwm_samsung_set_invert()  argument
384 	tcon = readl(chip->base + REG_TCON);  in pwm_samsung_set_invert()
387 		chip->inverter_mask |= BIT(channel);  in pwm_samsung_set_invert()
390 		chip->inverter_mask &= ~BIT(channel);  in pwm_samsung_set_invert()
394 	writel(tcon, chip->base + REG_TCON);  in pwm_samsung_set_invert()
399 static int pwm_samsung_set_polarity(struct pwm_chip *chip,  in pwm_samsung_set_polarity()  argument
403 	struct samsung_pwm_chip *our_chip = to_samsung_pwm_chip(chip);  in pwm_samsung_set_polarity()
460 static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip)  in pwm_samsung_parse_dt()  argument
462 	struct device_node *np = chip->chip.dev->of_node;  in pwm_samsung_parse_dt()
472 	memcpy(&chip->variant, match->data, sizeof(chip->variant));  in pwm_samsung_parse_dt()
476 			dev_err(chip->chip.dev,  in pwm_samsung_parse_dt()
481 		chip->variant.output_mask |= BIT(val);  in pwm_samsung_parse_dt()
487 static int pwm_samsung_parse_dt(struct samsung_pwm_chip *chip)  in pwm_samsung_parse_dt()  argument
496 	struct samsung_pwm_chip *chip;  in pwm_samsung_probe()  local
501 	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);  in pwm_samsung_probe()
502 	if (chip == NULL)  in pwm_samsung_probe()
505 	chip->chip.dev = &pdev->dev;  in pwm_samsung_probe()
506 	chip->chip.ops = &pwm_samsung_ops;  in pwm_samsung_probe()
507 	chip->chip.base = -1;  in pwm_samsung_probe()
508 	chip->chip.npwm = SAMSUNG_PWM_NUM;  in pwm_samsung_probe()
509 	chip->inverter_mask = BIT(SAMSUNG_PWM_NUM) - 1;  in pwm_samsung_probe()
512 		ret = pwm_samsung_parse_dt(chip);  in pwm_samsung_probe()
516 		chip->chip.of_xlate = of_pwm_xlate_with_flags;  in pwm_samsung_probe()
517 		chip->chip.of_pwm_n_cells = 3;  in pwm_samsung_probe()
524 		memcpy(&chip->variant, pdev->dev.platform_data,  in pwm_samsung_probe()
525 							sizeof(chip->variant));  in pwm_samsung_probe()
529 	chip->base = devm_ioremap_resource(&pdev->dev, res);  in pwm_samsung_probe()
530 	if (IS_ERR(chip->base))  in pwm_samsung_probe()
531 		return PTR_ERR(chip->base);  in pwm_samsung_probe()
533 	chip->base_clk = devm_clk_get(&pdev->dev, "timers");  in pwm_samsung_probe()
534 	if (IS_ERR(chip->base_clk)) {  in pwm_samsung_probe()
536 		return PTR_ERR(chip->base_clk);  in pwm_samsung_probe()
539 	ret = clk_prepare_enable(chip->base_clk);  in pwm_samsung_probe()
546 		if (chip->variant.output_mask & BIT(chan))  in pwm_samsung_probe()
547 			pwm_samsung_set_invert(chip, chan, true);  in pwm_samsung_probe()
550 	chip->tclk0 = devm_clk_get(&pdev->dev, "pwm-tclk0");  in pwm_samsung_probe()
551 	chip->tclk1 = devm_clk_get(&pdev->dev, "pwm-tclk1");  in pwm_samsung_probe()
553 	platform_set_drvdata(pdev, chip);  in pwm_samsung_probe()
555 	ret = pwmchip_add(&chip->chip);  in pwm_samsung_probe()
558 		clk_disable_unprepare(chip->base_clk);  in pwm_samsung_probe()
563 		clk_get_rate(chip->base_clk),  in pwm_samsung_probe()
564 		!IS_ERR(chip->tclk0) ? clk_get_rate(chip->tclk0) : 0,  in pwm_samsung_probe()
565 		!IS_ERR(chip->tclk1) ? clk_get_rate(chip->tclk1) : 0);  in pwm_samsung_probe()
572 	struct samsung_pwm_chip *chip = platform_get_drvdata(pdev);  in pwm_samsung_remove()  local
575 	ret = pwmchip_remove(&chip->chip);  in pwm_samsung_remove()
579 	clk_disable_unprepare(chip->base_clk);  in pwm_samsung_remove()
587 	struct samsung_pwm_chip *chip = dev_get_drvdata(dev);  in pwm_samsung_suspend()  local
596 		struct pwm_device *pwm = &chip->chip.pwms[i];  in pwm_samsung_suspend()
611 	struct samsung_pwm_chip *chip = dev_get_drvdata(dev);  in pwm_samsung_resume()  local
619 		if (chip->variant.output_mask & BIT(chan))  in pwm_samsung_resume()
620 			pwm_samsung_set_invert(chip, chan,  in pwm_samsung_resume()
621 					chip->inverter_mask & BIT(chan));  in pwm_samsung_resume()