165 static int meson_pwm_calc(struct meson_pwm *meson,  in meson_pwm_calc()  argument
173 	if (~(meson->inverter_mask >> id) & 0x1)  in meson_pwm_calc()
182 		dev_err(meson->chip.dev, "invalid source clock frequency\n");  in meson_pwm_calc()
186 	dev_dbg(meson->chip.dev, "fin_freq: %lu Hz\n", fin_freq);  in meson_pwm_calc()
194 		dev_dbg(meson->chip.dev, "fin_ps=%llu pre_div=%u cnt=%u\n",  in meson_pwm_calc()
201 		dev_err(meson->chip.dev, "unable to get period pre_div\n");  in meson_pwm_calc()
205 	dev_dbg(meson->chip.dev, "period=%u pre_div=%u cnt=%u\n", period,  in meson_pwm_calc()
221 			dev_err(meson->chip.dev, "unable to get duty cycle\n");  in meson_pwm_calc()
225 		dev_dbg(meson->chip.dev, "duty=%u pre_div=%u duty_cnt=%u\n",  in meson_pwm_calc()
236 static void meson_pwm_enable(struct meson_pwm *meson,  in meson_pwm_enable()  argument
263 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_enable()
265 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
269 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
272 	writel(value, meson->base + offset);  in meson_pwm_enable()
274 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_enable()
276 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_enable()
278 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_enable()
281 static void meson_pwm_disable(struct meson_pwm *meson, unsigned int id)  in meson_pwm_disable()  argument
299 	spin_lock_irqsave(&meson->lock, flags);  in meson_pwm_disable()
301 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_disable()
303 	writel(value, meson->base + REG_MISC_AB);  in meson_pwm_disable()
305 	spin_unlock_irqrestore(&meson->lock, flags);  in meson_pwm_disable()
312 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_apply()  local
319 		meson_pwm_disable(meson, pwm->hwpwm);  in meson_pwm_apply()
330 				meson->inverter_mask |= BIT(pwm->hwpwm);  in meson_pwm_apply()
332 				meson->inverter_mask &= ~BIT(pwm->hwpwm);  in meson_pwm_apply()
335 		err = meson_pwm_calc(meson, channel, pwm->hwpwm,  in meson_pwm_apply()
346 		meson_pwm_enable(meson, channel, pwm->hwpwm);  in meson_pwm_apply()
356 	struct meson_pwm *meson = to_meson_pwm(chip);  in meson_pwm_get_state()  local
375 	value = readl(meson->base + REG_MISC_AB);  in meson_pwm_get_state()
442 		.compatible = "amlogic,meson-gxbb-pwm",
446 		.compatible = "amlogic,meson-gxbb-ao-pwm",
450 		.compatible = "amlogic,meson-axg-ee-pwm",
454 		.compatible = "amlogic,meson-axg-ao-pwm",
461 static int meson_pwm_init_channels(struct meson_pwm *meson,  in meson_pwm_init_channels()  argument
464 	struct device *dev = meson->chip.dev;  in meson_pwm_init_channels()
470 	for (i = 0; i < meson->chip.npwm; i++) {  in meson_pwm_init_channels()
478 		init.parent_names = meson->data->parent_names;  in meson_pwm_init_channels()
479 		init.num_parents = meson->data->num_parents;  in meson_pwm_init_channels()
481 		channel->mux.reg = meson->base + REG_MISC_AB;  in meson_pwm_init_channels()
485 		channel->mux.lock = &meson->lock;  in meson_pwm_init_channels()
511 static void meson_pwm_add_channels(struct meson_pwm *meson,  in meson_pwm_add_channels()  argument
516 	for (i = 0; i < meson->chip.npwm; i++)  in meson_pwm_add_channels()
517 		pwm_set_chip_data(&meson->chip.pwms[i], &channels[i]);  in meson_pwm_add_channels()
523 	struct meson_pwm *meson;  in meson_pwm_probe()  local
527 	meson = devm_kzalloc(&pdev->dev, sizeof(*meson), GFP_KERNEL);  in meson_pwm_probe()
528 	if (!meson)  in meson_pwm_probe()
532 	meson->base = devm_ioremap_resource(&pdev->dev, regs);  in meson_pwm_probe()
533 	if (IS_ERR(meson->base))  in meson_pwm_probe()
534 		return PTR_ERR(meson->base);  in meson_pwm_probe()
536 	spin_lock_init(&meson->lock);  in meson_pwm_probe()
537 	meson->chip.dev = &pdev->dev;  in meson_pwm_probe()
538 	meson->chip.ops = &meson_pwm_ops;  in meson_pwm_probe()
539 	meson->chip.base = -1;  in meson_pwm_probe()
540 	meson->chip.npwm = 2;  in meson_pwm_probe()
541 	meson->chip.of_xlate = of_pwm_xlate_with_flags;  in meson_pwm_probe()
542 	meson->chip.of_pwm_n_cells = 3;  in meson_pwm_probe()
544 	meson->data = of_device_get_match_data(&pdev->dev);  in meson_pwm_probe()
545 	meson->inverter_mask = BIT(meson->chip.npwm) - 1;  in meson_pwm_probe()
547 	channels = devm_kcalloc(&pdev->dev, meson->chip.npwm,  in meson_pwm_probe()
552 	err = meson_pwm_init_channels(meson, channels);  in meson_pwm_probe()
556 	err = pwmchip_add(&meson->chip);  in meson_pwm_probe()
562 	meson_pwm_add_channels(meson, channels);  in meson_pwm_probe()
564 	platform_set_drvdata(pdev, meson);  in meson_pwm_probe()
571 	struct meson_pwm *meson = platform_get_drvdata(pdev);  in meson_pwm_remove()  local
573 	return pwmchip_remove(&meson->chip);  in meson_pwm_remove()
578 		.name = "meson-pwm",
586 MODULE_DESCRIPTION("Amlogic Meson PWM Generator driver");