3  * PWM controller driver for Amlogic Meson SoCs.
123 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_request()  local
124 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_request()
140 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_free()  local
141 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_free()
146 static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,  in meson_pwm_calc()  argument
149 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_calc()
172 		dev_err(meson->chip.dev, "invalid source clock frequency\n");  in meson_pwm_calc()
176 	dev_dbg(meson->chip.dev, "fin_freq: %lu Hz\n", fin_freq);  in meson_pwm_calc()
180 		dev_err(meson->chip.dev, "unable to get period cnt\n");  in meson_pwm_calc()
184 	dev_dbg(meson->chip.dev, "period=%llu cnt=%u\n", period, cnt);  in meson_pwm_calc()
195 		dev_dbg(meson->chip.dev, "duty=%llu duty_cnt=%u\n", duty, duty_cnt);  in meson_pwm_calc()
206 static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_enable()  argument
208 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_enable()
218 		dev_err(meson->chip.dev, "setting clock rate failed\n");  in meson_pwm_enable()
220 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_enable()
224 	writel(value, meson->base + channel_data->reg_offset);  in meson_pwm_enable()
226 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
228 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
230 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_enable()
233 static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_disable()  argument
238 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_disable()
240 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_disable()
242 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_disable()
244 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_disable()
250 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_apply()  local
251 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_apply()
272 			meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
274 			meson_pwm_disable(meson, pwm);  in meson_pwm_apply()
277 		err = meson_pwm_calc(meson, pwm, state);  in meson_pwm_apply()
281 		meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
290 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_cnt_to_ns()  local
295 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_cnt_to_ns()
307 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_get_state()  local
315 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_get_state()
318 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_get_state()
321 	value = readl(meson->base + channel_data->reg_offset);  in meson_pwm_get_state()
404 		.compatible = "amlogic,meson-gxbb-pwm",
408 		.compatible = "amlogic,meson-gxbb-ao-pwm",
412 		.compatible = "amlogic,meson-axg-ee-pwm",
416 		.compatible = "amlogic,meson-axg-ao-pwm",
420 		.compatible = "amlogic,meson-g12a-ee-pwm",
424 		.compatible = "amlogic,meson-g12a-ao-pwm-ab",
428 		.compatible = "amlogic,meson-g12a-ao-pwm-cd",
435 static int meson_pwm_init_channels(struct meson_pwm *meson)  in meson_pwm_init_channels()  argument
438 	struct device *dev = meson->chip.dev;  in meson_pwm_init_channels()
443 	for (i = 0; i < meson->data->num_parents; i++) {  in meson_pwm_init_channels()
445 		mux_parent_data[i].name = meson->data->parent_names[i];  in meson_pwm_init_channels()
448 	for (i = 0; i < meson->chip.npwm; i++) {  in meson_pwm_init_channels()
449 		struct meson_pwm_channel *channel = &meson->channels[i];  in meson_pwm_init_channels()
459 		init.num_parents = meson->data->num_parents;  in meson_pwm_init_channels()
461 		channel->mux.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
466 		channel->mux.lock = &meson->lock;  in meson_pwm_init_channels()
485 		channel->div.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
490 		channel->div.lock = &meson->lock;  in meson_pwm_init_channels()
507 		channel->gate.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
511 		channel->gate.lock = &meson->lock;  in meson_pwm_init_channels()
528 	struct meson_pwm *meson;  in meson_pwm_probe()  local
531 	meson = devm_kzalloc(&pdev->dev, sizeof(*meson), GFP_KERNEL);  in meson_pwm_probe()
532 	if (!meson)  in meson_pwm_probe()
535 	meson->base = devm_platform_ioremap_resource(pdev, 0);  in meson_pwm_probe()
536 	if (IS_ERR(meson->base))  in meson_pwm_probe()
537 		return PTR_ERR(meson->base);  in meson_pwm_probe()
539 	spin_lock_init(&meson->lock);  in meson_pwm_probe()
540 	meson->chip.dev = &pdev->dev;  in meson_pwm_probe()
541 	meson->chip.ops = &meson_pwm_ops;  in meson_pwm_probe()
542 	meson->chip.npwm = MESON_NUM_PWMS;  in meson_pwm_probe()
544 	meson->data = of_device_get_match_data(&pdev->dev);  in meson_pwm_probe()
546 	err = meson_pwm_init_channels(meson);  in meson_pwm_probe()
550 	err = devm_pwmchip_add(&pdev->dev, &meson->chip);  in meson_pwm_probe()
560 		.name = "meson-pwm",
567 MODULE_DESCRIPTION("Amlogic Meson PWM Generator driver");