diff options
Diffstat (limited to 'drivers/iio/adc/imx7d_adc.c')
| -rw-r--r-- | drivers/iio/adc/imx7d_adc.c | 88 |
1 files changed, 36 insertions, 52 deletions
diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c index 147ee8575ad0..0922ee08546b 100644 --- a/drivers/iio/adc/imx7d_adc.c +++ b/drivers/iio/adc/imx7d_adc.c @@ -434,6 +434,33 @@ static void imx7d_adc_power_down(struct imx7d_adc *info) writel(adc_cfg, info->regs + IMX7D_REG_ADC_ADC_CFG); } +static int imx7d_adc_enable(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct imx7d_adc *info = iio_priv(indio_dev); + int ret; + + ret = regulator_enable(info->vref); + if (ret) { + dev_err(info->dev, + "Can't enable adc reference top voltage, err = %d\n", + ret); + return ret; + } + + ret = clk_prepare_enable(info->clk); + if (ret) { + dev_err(info->dev, + "Could not prepare or enable clock.\n"); + regulator_disable(info->vref); + return ret; + } + + imx7d_adc_hw_init(info); + + return 0; +} + static int imx7d_adc_probe(struct platform_device *pdev) { struct imx7d_adc *info; @@ -479,14 +506,6 @@ static int imx7d_adc_probe(struct platform_device *pdev) return ret; } - ret = regulator_enable(info->vref); - if (ret) { - dev_err(dev, - "Can't enable adc reference top voltage, err = %d\n", - ret); - return ret; - } - platform_set_drvdata(pdev, indio_dev); init_completion(&info->completion); @@ -498,38 +517,30 @@ static int imx7d_adc_probe(struct platform_device *pdev) indio_dev->channels = imx7d_adc_iio_channels; indio_dev->num_channels = ARRAY_SIZE(imx7d_adc_iio_channels); - ret = clk_prepare_enable(info->clk); - if (ret) { - dev_err(dev, "Could not prepare or enable the clock.\n"); - goto error_adc_clk_enable; - } - ret = devm_request_irq(dev, irq, imx7d_adc_isr, 0, dev_name(dev), info); if (ret < 0) { dev_err(dev, "Failed requesting irq, irq = %d\n", irq); - goto error_iio_device_register; + return ret; } imx7d_adc_feature_config(info); - imx7d_adc_hw_init(info); + + ret = imx7d_adc_enable(&indio_dev->dev); + if (ret) + return ret; ret = iio_device_register(indio_dev); if (ret) { imx7d_adc_power_down(info); + clk_disable_unprepare(info->clk); + regulator_disable(info->vref); dev_err(&pdev->dev, "Couldn't register the device.\n"); - goto error_iio_device_register; + return ret; } return 0; - -error_iio_device_register: - clk_disable_unprepare(info->clk); -error_adc_clk_enable: - regulator_disable(info->vref); - - return ret; } static int imx7d_adc_remove(struct platform_device *pdev) @@ -560,34 +571,7 @@ static int __maybe_unused imx7d_adc_suspend(struct device *dev) return 0; } -static int __maybe_unused imx7d_adc_resume(struct device *dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct imx7d_adc *info = iio_priv(indio_dev); - int ret; - - ret = regulator_enable(info->vref); - if (ret) { - dev_err(info->dev, - "Can't enable adc reference top voltage, err = %d\n", - ret); - return ret; - } - - ret = clk_prepare_enable(info->clk); - if (ret) { - dev_err(info->dev, - "Could not prepare or enable clock.\n"); - regulator_disable(info->vref); - return ret; - } - - imx7d_adc_hw_init(info); - - return 0; -} - -static SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_suspend, imx7d_adc_resume); +static SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_suspend, imx7d_adc_enable); static struct platform_driver imx7d_adc_driver = { .probe = imx7d_adc_probe, |