1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright (c) 2017-2018 Vasily Khoruzhick <anarsoul@gmail.com>
54 static int sunxi_pwm_set_invert(struct udevice *dev, uint channel,  in sunxi_pwm_set_invert()  argument
57 	struct sunxi_pwm_priv *priv = dev_get_priv(dev);  in sunxi_pwm_set_invert()
60 	priv->invert = polarity;  in sunxi_pwm_set_invert()
65 static int sunxi_pwm_set_config(struct udevice *dev, uint channel,  in sunxi_pwm_set_config()  argument
68 	struct sunxi_pwm_priv *priv = dev_get_priv(dev);  in sunxi_pwm_set_config()
69 	struct sunxi_pwm *regs = priv->regs;  in sunxi_pwm_set_config()
85 		if ((period - 1 <= SUNXI_PWM_CH0_PERIOD_MAX) &&  in sunxi_pwm_set_config()
93 	if (best_period - 1 > SUNXI_PWM_CH0_PERIOD_MAX) {  in sunxi_pwm_set_config()
95 		return -EINVAL;  in sunxi_pwm_set_config()
100 	if (priv->prescaler != best_prescaler) {  in sunxi_pwm_set_config()
102 		v = readl(&regs->ctrl);  in sunxi_pwm_set_config()
104 		writel(v, &regs->ctrl);  in sunxi_pwm_set_config()
107 		writel(v, &regs->ctrl);  in sunxi_pwm_set_config()
109 		writel(v, &regs->ctrl);  in sunxi_pwm_set_config()
110 		priv->prescaler = best_prescaler;  in sunxi_pwm_set_config()
114 	       SUNXI_PWM_CH0_PERIOD_DUTY(duty), &regs->ch0_period);  in sunxi_pwm_set_config()
117 	      __func__, priv->prescaler,  in sunxi_pwm_set_config()
123 static int sunxi_pwm_set_enable(struct udevice *dev, uint channel, bool enable)  in sunxi_pwm_set_enable()  argument
125 	struct sunxi_pwm_priv *priv = dev_get_priv(dev);  in sunxi_pwm_set_enable()
126 	struct sunxi_pwm *regs = priv->regs;  in sunxi_pwm_set_enable()
129 	debug("%s: Enable '%s'\n", __func__, dev->name);  in sunxi_pwm_set_enable()
131 	v = readl(&regs->ctrl);  in sunxi_pwm_set_enable()
134 		writel(v, &regs->ctrl);  in sunxi_pwm_set_enable()
140 	if (priv->invert)  in sunxi_pwm_set_enable()
145 	writel(v, &regs->ctrl);  in sunxi_pwm_set_enable()
150 static int sunxi_pwm_ofdata_to_platdata(struct udevice *dev)  in sunxi_pwm_ofdata_to_platdata()  argument
152 	struct sunxi_pwm_priv *priv = dev_get_priv(dev);  in sunxi_pwm_ofdata_to_platdata()
154 	priv->regs = (struct sunxi_pwm *)devfdt_get_addr(dev);  in sunxi_pwm_ofdata_to_platdata()
159 static int sunxi_pwm_probe(struct udevice *dev)  in sunxi_pwm_probe()  argument
171 	{ .compatible = "allwinner,sun5i-a13-pwm" },
172 	{ .compatible = "allwinner,sun50i-a64-pwm" },