1 // SPDX-License-Identifier: GPL-2.0
41 	ret = clk_prepare_enable(imx->clk_ipg);  in pwm_imx1_clk_prepare_enable()
45 	ret = clk_prepare_enable(imx->clk_per);  in pwm_imx1_clk_prepare_enable()
47 		clk_disable_unprepare(imx->clk_ipg);  in pwm_imx1_clk_prepare_enable()
58 	clk_disable_unprepare(imx->clk_per);  in pwm_imx1_clk_disable_unprepare()
59 	clk_disable_unprepare(imx->clk_ipg);  in pwm_imx1_clk_disable_unprepare()
73 	 * Bootloader (u-boot or WinCE+haret) has programmed the PWM  in pwm_imx1_config()
85 	max = readl(imx->mmio_base + MX1_PWMP);  in pwm_imx1_config()
88 	writel(max - p, imx->mmio_base + MX1_PWMS);  in pwm_imx1_config()
103 	value = readl(imx->mmio_base + MX1_PWMC);  in pwm_imx1_enable()
105 	writel(value, imx->mmio_base + MX1_PWMC);  in pwm_imx1_enable()
115 	value = readl(imx->mmio_base + MX1_PWMC);  in pwm_imx1_disable()
117 	writel(value, imx->mmio_base + MX1_PWMC);  in pwm_imx1_disable()
127 	if (state->polarity != PWM_POLARITY_NORMAL)  in pwm_imx1_apply()
128 		return -EINVAL;  in pwm_imx1_apply()
130 	if (!state->enabled) {  in pwm_imx1_apply()
131 		if (pwm->state.enabled)  in pwm_imx1_apply()
137 	err = pwm_imx1_config(chip, pwm, state->duty_cycle, state->period);  in pwm_imx1_apply()
141 	if (!pwm->state.enabled)  in pwm_imx1_apply()
153 	{ .compatible = "fsl,imx1-pwm", },
162 	imx = devm_kzalloc(&pdev->dev, sizeof(*imx), GFP_KERNEL);  in pwm_imx1_probe()
164 		return -ENOMEM;  in pwm_imx1_probe()
166 	imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");  in pwm_imx1_probe()
167 	if (IS_ERR(imx->clk_ipg))  in pwm_imx1_probe()
168 		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_ipg),  in pwm_imx1_probe()
169 				     "getting ipg clock failed\n");  in pwm_imx1_probe()
171 	imx->clk_per = devm_clk_get(&pdev->dev, "per");  in pwm_imx1_probe()
172 	if (IS_ERR(imx->clk_per))  in pwm_imx1_probe()
173 		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_per),  in pwm_imx1_probe()
174 				     "failed to get peripheral clock\n");  in pwm_imx1_probe()
176 	imx->chip.ops = &pwm_imx1_ops;  in pwm_imx1_probe()
177 	imx->chip.dev = &pdev->dev;  in pwm_imx1_probe()
178 	imx->chip.npwm = 1;  in pwm_imx1_probe()
180 	imx->mmio_base = devm_platform_ioremap_resource(pdev, 0);  in pwm_imx1_probe()
181 	if (IS_ERR(imx->mmio_base))  in pwm_imx1_probe()
182 		return PTR_ERR(imx->mmio_base);  in pwm_imx1_probe()
184 	return devm_pwmchip_add(&pdev->dev, &imx->chip);  in pwm_imx1_probe()
189 		.name = "pwm-imx1",