iio/dac/lpc18xx_dac.c

52 	struct lpc18xx_dac *dac = iio_priv(indio_dev);
57 		reg = readl(dac->base + LPC18XX_DAC_CR);
64 		*val = regulator_get_voltage(dac->vref) / 1000;
77 	struct lpc18xx_dac *dac = iio_priv(indio_dev);
88 		mutex_lock(&dac->lock);
89 		writel(reg, dac->base + LPC18XX_DAC_CR);
90 		writel(LPC18XX_DAC_CTRL_DMA_ENA, dac->base + LPC18XX_DAC_CTRL);
91 		mutex_unlock(&dac->lock);
107 	struct lpc18xx_dac *dac;
110 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*dac));
115 	dac = iio_priv(indio_dev);
116 	mutex_init(&dac->lock);
118 	dac->base = devm_platform_ioremap_resource(pdev, 0);
119 	if (IS_ERR(dac->base))
120 		return PTR_ERR(dac->base);
122 	dac->clk = devm_clk_get(&pdev->dev, NULL);
123 	if (IS_ERR(dac->clk))
124 		return dev_err_probe(&pdev->dev, PTR_ERR(dac->clk),
127 	dac->vref = devm_regulator_get(&pdev->dev, "vref");
128 	if (IS_ERR(dac->vref))
129 		return dev_err_probe(&pdev->dev, PTR_ERR(dac->vref),
138 	ret = regulator_enable(dac->vref);
144 	ret = clk_prepare_enable(dac->clk);
150 	writel(0, dac->base + LPC18XX_DAC_CTRL);
151 	writel(0, dac->base + LPC18XX_DAC_CR);
162 	clk_disable_unprepare(dac->clk);
164 	regulator_disable(dac->vref);
171 	struct lpc18xx_dac *dac = iio_priv(indio_dev);
175 	writel(0, dac->base + LPC18XX_DAC_CTRL);
176 	clk_disable_unprepare(dac->clk);
177 	regulator_disable(dac->vref);
181 	{ .compatible = "nxp,lpc1850-dac" },
190 		.name = "lpc18xx-dac",