1 // SPDX-License-Identifier: GPL-2.0+
7 #include <linux/clk.h>
16 	struct clk *clk;  member
27 	unsigned int freq = clk_get_rate(priv->clk);  in clps711x_pwm_request()
30 		return -EINVAL;  in clps711x_pwm_request()
33 	pwm->args.period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, freq);  in clps711x_pwm_request()
42 	/* PWM0 - bits 4..7, PWM1 - bits 8..11 */  in clps711x_pwm_apply()
43 	u32 shift = (pwm->hwpwm + 1) * 4;  in clps711x_pwm_apply()
46 	if (state->polarity != PWM_POLARITY_NORMAL)  in clps711x_pwm_apply()
47 		return -EINVAL;  in clps711x_pwm_apply()
49 	if (state->period != pwm->args.period)  in clps711x_pwm_apply()
50 		return -EINVAL;  in clps711x_pwm_apply()
52 	if (state->enabled)  in clps711x_pwm_apply()
53 		val = mul_u64_u64_div_u64(state->duty_cycle, 0xf, state->period);  in clps711x_pwm_apply()
57 	pmpcon = readl(priv->pmpcon);  in clps711x_pwm_apply()
60 	writel(pmpcon, priv->pmpcon);  in clps711x_pwm_apply()
75 	chip = devm_pwmchip_alloc(&pdev->dev, 2, sizeof(*priv));  in clps711x_pwm_probe()
80 	priv->pmpcon = devm_platform_ioremap_resource(pdev, 0);  in clps711x_pwm_probe()
81 	if (IS_ERR(priv->pmpcon))  in clps711x_pwm_probe()
82 		return PTR_ERR(priv->pmpcon);  in clps711x_pwm_probe()
84 	priv->clk = devm_clk_get(&pdev->dev, NULL);  in clps711x_pwm_probe()
85 	if (IS_ERR(priv->clk))  in clps711x_pwm_probe()
86 		return PTR_ERR(priv->clk);  in clps711x_pwm_probe()
88 	chip->ops = &clps711x_pwm_ops;  in clps711x_pwm_probe()
90 	return devm_pwmchip_add(&pdev->dev, chip);  in clps711x_pwm_probe()
94 	{ .compatible = "cirrus,ep7209-pwm", },
101 		.name = "clps711x-pwm",