3  * PWM controller driver for Amlogic Meson SoCs.
122 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_request()  local
131 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_request()
161 static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,  in meson_pwm_calc()  argument
176 		dev_err(meson->chip.dev, "invalid source clock frequency\n");  in meson_pwm_calc()
180 	dev_dbg(meson->chip.dev, "fin_freq: %lu Hz\n", fin_freq);  in meson_pwm_calc()
184 		dev_err(meson->chip.dev, "unable to get period pre_div\n");  in meson_pwm_calc()
190 		dev_err(meson->chip.dev, "unable to get period cnt\n");  in meson_pwm_calc()
194 	dev_dbg(meson->chip.dev, "period=%u pre_div=%u cnt=%u\n", period,  in meson_pwm_calc()
210 			dev_err(meson->chip.dev, "unable to get duty cycle\n");  in meson_pwm_calc()
214 		dev_dbg(meson->chip.dev, "duty=%u pre_div=%u duty_cnt=%u\n",  in meson_pwm_calc()
225 static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_enable()  argument
234 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_enable()
236 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
240 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
244 	writel(value, meson->base + channel_data->reg_offset);  in meson_pwm_enable()
246 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
248 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
250 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_enable()
253 static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_disable()  argument
258 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_disable()
260 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_disable()
262 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_disable()
264 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_disable()
271 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_apply()  local
295 			meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
297 			meson_pwm_disable(meson, pwm);  in meson_pwm_apply()
300 		err = meson_pwm_calc(meson, pwm, state);  in meson_pwm_apply()
304 		meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
313 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_cnt_to_ns()  local
319 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_cnt_to_ns()
333 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_get_state()  local
341 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_get_state()
344 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_get_state()
352 	value = readl(meson->base + channel_data->reg_offset);  in meson_pwm_get_state()
461 		.compatible = "amlogic,meson-gxbb-pwm",
465 		.compatible = "amlogic,meson-gxbb-ao-pwm",
469 		.compatible = "amlogic,meson-axg-ee-pwm",
473 		.compatible = "amlogic,meson-axg-ao-pwm",
477 		.compatible = "amlogic,meson-g12a-ee-pwm",
481 		.compatible = "amlogic,meson-g12a-ao-pwm-ab",
485 		.compatible = "amlogic,meson-g12a-ao-pwm-cd",
492 static int meson_pwm_init_channels(struct meson_pwm *meson)  in meson_pwm_init_channels()  argument
494 	struct device *dev = meson->chip.dev;  in meson_pwm_init_channels()
500 	for (i = 0; i < meson->chip.npwm; i++) {  in meson_pwm_init_channels()
501 		struct meson_pwm_channel *channel = &meson->channels[i];  in meson_pwm_init_channels()
508 		init.parent_names = meson->data->parent_names;  in meson_pwm_init_channels()
509 		init.num_parents = meson->data->num_parents;  in meson_pwm_init_channels()
511 		channel->mux.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
516 		channel->mux.lock = &meson->lock;  in meson_pwm_init_channels()
539 	struct meson_pwm *meson;  in meson_pwm_probe()  local
543 	meson = devm_kzalloc(&pdev->dev, sizeof(*meson), GFP_KERNEL);  in meson_pwm_probe()
544 	if (!meson)  in meson_pwm_probe()
548 	meson->base = devm_ioremap_resource(&pdev->dev, regs);  in meson_pwm_probe()
549 	if (IS_ERR(meson->base))  in meson_pwm_probe()
550 		return PTR_ERR(meson->base);  in meson_pwm_probe()
552 	spin_lock_init(&meson->lock);  in meson_pwm_probe()
553 	meson->chip.dev = &pdev->dev;  in meson_pwm_probe()
554 	meson->chip.ops = &meson_pwm_ops;  in meson_pwm_probe()
555 	meson->chip.base = -1;  in meson_pwm_probe()
556 	meson->chip.npwm = MESON_NUM_PWMS;  in meson_pwm_probe()
557 	meson->chip.of_xlate = of_pwm_xlate_with_flags;  in meson_pwm_probe()
558 	meson->chip.of_pwm_n_cells = 3;  in meson_pwm_probe()
560 	meson->data = of_device_get_match_data(&pdev->dev);  in meson_pwm_probe()
562 	err = meson_pwm_init_channels(meson);  in meson_pwm_probe()
566 	err = pwmchip_add(&meson->chip);  in meson_pwm_probe()
572 	platform_set_drvdata(pdev, meson);  in meson_pwm_probe()
579 	struct meson_pwm *meson = platform_get_drvdata(pdev);  in meson_pwm_remove()  local
581 	return pwmchip_remove(&meson->chip);  in meson_pwm_remove()
586 		.name = "meson-pwm",
594 MODULE_DESCRIPTION("Amlogic Meson PWM Generator driver");