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()
155 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_free()  local
156 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_free()
162 static int meson_pwm_calc(struct meson_pwm *meson, struct pwm_device *pwm,  in meson_pwm_calc()  argument
165 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_calc()
184 		dev_err(meson->chip.dev, "invalid source clock frequency\n");  in meson_pwm_calc()
188 	dev_dbg(meson->chip.dev, "fin_freq: %lu Hz\n", fin_freq);  in meson_pwm_calc()
192 		dev_err(meson->chip.dev, "unable to get period pre_div\n");  in meson_pwm_calc()
198 		dev_err(meson->chip.dev, "unable to get period cnt\n");  in meson_pwm_calc()
202 	dev_dbg(meson->chip.dev, "period=%llu pre_div=%u cnt=%u\n", period,  in meson_pwm_calc()
217 			dev_err(meson->chip.dev, "unable to get duty cycle\n");  in meson_pwm_calc()
221 		dev_dbg(meson->chip.dev, "duty=%llu pre_div=%u duty_cnt=%u\n",  in meson_pwm_calc()
232 static void meson_pwm_enable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_enable()  argument
234 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_enable()
241 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_enable()
243 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
247 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
251 	writel(value, meson->base + channel_data->reg_offset);  in meson_pwm_enable()
253 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
255 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
257 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_enable()
260 static void meson_pwm_disable(struct meson_pwm *meson, struct pwm_device *pwm)  in meson_pwm_disable()  argument
265 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_disable()
267 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_disable()
269 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_disable()
271 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_disable()
277 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_apply()  local
278 	struct meson_pwm_channel *channel = &meson->channels[pwm->hwpwm];  in meson_pwm_apply()
302 			meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
304 			meson_pwm_disable(meson, pwm);  in meson_pwm_apply()
307 		err = meson_pwm_calc(meson, pwm, state);  in meson_pwm_apply()
311 		meson_pwm_enable(meson, pwm);  in meson_pwm_apply()
320 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_cnt_to_ns()  local
326 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_cnt_to_ns()
340 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_get_state()  local
348 	channel = &meson->channels[pwm->hwpwm];  in meson_pwm_get_state()
351 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_get_state()
359 	value = readl(meson->base + channel_data->reg_offset);  in meson_pwm_get_state()
469 		.compatible = "amlogic,meson-gxbb-pwm",
473 		.compatible = "amlogic,meson-gxbb-ao-pwm",
477 		.compatible = "amlogic,meson-axg-ee-pwm",
481 		.compatible = "amlogic,meson-axg-ao-pwm",
485 		.compatible = "amlogic,meson-g12a-ee-pwm",
489 		.compatible = "amlogic,meson-g12a-ao-pwm-ab",
493 		.compatible = "amlogic,meson-g12a-ao-pwm-cd",
500 static int meson_pwm_init_channels(struct meson_pwm *meson)  in meson_pwm_init_channels()  argument
502 	struct device *dev = meson->chip.dev;  in meson_pwm_init_channels()
508 	for (i = 0; i < meson->chip.npwm; i++) {  in meson_pwm_init_channels()
509 		struct meson_pwm_channel *channel = &meson->channels[i];  in meson_pwm_init_channels()
516 		init.parent_names = meson->data->parent_names;  in meson_pwm_init_channels()
517 		init.num_parents = meson->data->num_parents;  in meson_pwm_init_channels()
519 		channel->mux.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
524 		channel->mux.lock = &meson->lock;  in meson_pwm_init_channels()
547 	struct meson_pwm *meson;  in meson_pwm_probe()  local
551 	meson = devm_kzalloc(&pdev->dev, sizeof(*meson), GFP_KERNEL);  in meson_pwm_probe()
552 	if (!meson)  in meson_pwm_probe()
556 	meson->base = devm_ioremap_resource(&pdev->dev, regs);  in meson_pwm_probe()
557 	if (IS_ERR(meson->base))  in meson_pwm_probe()
558 		return PTR_ERR(meson->base);  in meson_pwm_probe()
560 	spin_lock_init(&meson->lock);  in meson_pwm_probe()
561 	meson->chip.dev = &pdev->dev;  in meson_pwm_probe()
562 	meson->chip.ops = &meson_pwm_ops;  in meson_pwm_probe()
563 	meson->chip.base = -1;  in meson_pwm_probe()
564 	meson->chip.npwm = MESON_NUM_PWMS;  in meson_pwm_probe()
565 	meson->chip.of_xlate = of_pwm_xlate_with_flags;  in meson_pwm_probe()
566 	meson->chip.of_pwm_n_cells = 3;  in meson_pwm_probe()
568 	meson->data = of_device_get_match_data(&pdev->dev);  in meson_pwm_probe()
570 	err = meson_pwm_init_channels(meson);  in meson_pwm_probe()
574 	err = pwmchip_add(&meson->chip);  in meson_pwm_probe()
580 	platform_set_drvdata(pdev, meson);  in meson_pwm_probe()
587 	struct meson_pwm *meson = platform_get_drvdata(pdev);  in meson_pwm_remove()  local
589 	return pwmchip_remove(&meson->chip);  in meson_pwm_remove()
594 		.name = "meson-pwm",
602 MODULE_DESCRIPTION("Amlogic Meson PWM Generator driver");