1 // SPDX-License-Identifier: GPL-2.0
43 	ret = clk_prepare_enable(imx->clk_ipg);  in pwm_imx1_clk_prepare_enable()
47 	ret = clk_prepare_enable(imx->clk_per);  in pwm_imx1_clk_prepare_enable()
49 		clk_disable_unprepare(imx->clk_ipg);  in pwm_imx1_clk_prepare_enable()
60 	clk_disable_unprepare(imx->clk_per);  in pwm_imx1_clk_disable_unprepare()
61 	clk_disable_unprepare(imx->clk_ipg);  in pwm_imx1_clk_disable_unprepare()
75 	 * Bootloader (u-boot or WinCE+haret) has programmed the PWM  in pwm_imx1_config()
87 	max = readl(imx->mmio_base + MX1_PWMP);  in pwm_imx1_config()
90 	writel(max - p, imx->mmio_base + MX1_PWMS);  in pwm_imx1_config()
105 	value = readl(imx->mmio_base + MX1_PWMC);  in pwm_imx1_enable()
107 	writel(value, imx->mmio_base + MX1_PWMC);  in pwm_imx1_enable()
117 	value = readl(imx->mmio_base + MX1_PWMC);  in pwm_imx1_disable()
119 	writel(value, imx->mmio_base + MX1_PWMC);  in pwm_imx1_disable()
129 	if (state->polarity != PWM_POLARITY_NORMAL)  in pwm_imx1_apply()
130 		return -EINVAL;  in pwm_imx1_apply()
132 	if (!state->enabled) {  in pwm_imx1_apply()
133 		if (pwm->state.enabled)  in pwm_imx1_apply()
139 	err = pwm_imx1_config(chip, pwm, state->duty_cycle, state->period);  in pwm_imx1_apply()
143 	if (!pwm->state.enabled)  in pwm_imx1_apply()
154 	{ .compatible = "fsl,imx1-pwm", },
164 	chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*imx));  in pwm_imx1_probe()
169 	imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");  in pwm_imx1_probe()
170 	if (IS_ERR(imx->clk_ipg))  in pwm_imx1_probe()
171 		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_ipg),  in pwm_imx1_probe()
172 				     "getting ipg clock failed\n");  in pwm_imx1_probe()
174 	imx->clk_per = devm_clk_get(&pdev->dev, "per");  in pwm_imx1_probe()
175 	if (IS_ERR(imx->clk_per))  in pwm_imx1_probe()
176 		return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_per),  in pwm_imx1_probe()
177 				     "failed to get peripheral clock\n");  in pwm_imx1_probe()
179 	chip->ops = &pwm_imx1_ops;  in pwm_imx1_probe()
181 	imx->mmio_base = devm_platform_ioremap_resource(pdev, 0);  in pwm_imx1_probe()
182 	if (IS_ERR(imx->mmio_base))  in pwm_imx1_probe()
183 		return PTR_ERR(imx->mmio_base);  in pwm_imx1_probe()
185 	return devm_pwmchip_add(&pdev->dev, chip);  in pwm_imx1_probe()
190 		.name = "pwm-imx1",