Lines Matching defs:adc
70 static int lpc18xx_adc_read_chan(struct lpc18xx_adc *adc, unsigned int ch)
75 reg = adc->cr_reg | BIT(ch) | LPC18XX_ADC_CR_START_NOW;
76 writel(reg, adc->base + LPC18XX_ADC_CR);
78 ret = readl_poll_timeout(adc->base + LPC18XX_ADC_GDR, reg,
81 dev_warn(adc->dev, "adc read timed out\n");
92 struct lpc18xx_adc *adc = iio_priv(indio_dev);
96 mutex_lock(&adc->lock);
97 *val = lpc18xx_adc_read_chan(adc, chan->channel);
98 mutex_unlock(&adc->lock);
105 *val = regulator_get_voltage(adc->vref) / 1000;
121 struct lpc18xx_adc *adc;
126 indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc));
131 adc = iio_priv(indio_dev);
132 adc->dev = &pdev->dev;
133 mutex_init(&adc->lock);
135 adc->base = devm_platform_ioremap_resource(pdev, 0);
136 if (IS_ERR(adc->base))
137 return PTR_ERR(adc->base);
139 adc->clk = devm_clk_get(&pdev->dev, NULL);
140 if (IS_ERR(adc->clk)) {
142 return PTR_ERR(adc->clk);
145 rate = clk_get_rate(adc->clk);
148 adc->vref = devm_regulator_get(&pdev->dev, "vref");
149 if (IS_ERR(adc->vref)) {
151 return PTR_ERR(adc->vref);
160 ret = regulator_enable(adc->vref);
166 ret = clk_prepare_enable(adc->clk);
172 adc->cr_reg = (clkdiv << LPC18XX_ADC_CR_CLKDIV_SHIFT) |
174 writel(adc->cr_reg, adc->base + LPC18XX_ADC_CR);
185 writel(0, adc->base + LPC18XX_ADC_CR);
186 clk_disable_unprepare(adc->clk);
188 regulator_disable(adc->vref);
195 struct lpc18xx_adc *adc = iio_priv(indio_dev);
199 writel(0, adc->base + LPC18XX_ADC_CR);
200 clk_disable_unprepare(adc->clk);
201 regulator_disable(adc->vref);
207 { .compatible = "nxp,lpc1850-adc" },
216 .name = "lpc18xx-adc",