static int vf610_adc_probe(struct platform_device *pdev)
{
struct vf610_adc *info;
struct iio_dev *indio_dev;
struct resource *mem;
int irq;
int ret;
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(struct vf610_adc));
if (!indio_dev) {
dev_err(&pdev->dev, "Failed allocating iio device\n");
return -ENOMEM;
}
info = iio_priv(indio_dev);
info->dev = &pdev->dev;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
info->regs = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(info->regs))
return PTR_ERR(info->regs);
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "no irq resource?\n");
return irq;
}
ret = devm_request_irq(info->dev, irq,
vf610_adc_isr, 0,
dev_name(&pdev->dev), indio_dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
return ret;
}
info->clk = devm_clk_get(&pdev->dev, "adc");
if (IS_ERR(info->clk)) {
dev_err(&pdev->dev, "failed getting clock, err = %ld\n",
PTR_ERR(info->clk));
return PTR_ERR(info->clk);
}
info->vref = devm_regulator_get(&pdev->dev, "vref");
if (IS_ERR(info->vref))
return PTR_ERR(info->vref);
ret = regulator_enable(info->vref);
if (ret)
return ret;
info->vref_uv = regulator_get_voltage(info->vref);
of_property_read_u32_array(pdev->dev.of_node, "fsl,adck-max-frequency",
info->max_adck_rate, 3);
ret = of_property_read_u32(pdev->dev.of_node, "min-sample-time",
&info->adc_feature.default_sample_time);
if (ret)
info->adc_feature.default_sample_time = DEFAULT_SAMPLE_TIME;
platform_set_drvdata(pdev, indio_dev);
init_completion(&info->completion);
indio_dev->name = dev_name(&pdev->dev);
indio_dev->dev.parent = &pdev->dev;
indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->info = &vf610_adc_iio_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = vf610_adc_iio_channels;
indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels);
ret = clk_prepare_enable(info->clk);
if (ret) {
dev_err(&pdev->dev,
"Could not prepare or enable the clock.\n");
goto error_adc_clk_enable;
}
vf610_adc_cfg_init(info);
vf610_adc_hw_init(info);
ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
NULL, &iio_triggered_buffer_setup_ops);
if (ret < 0) {
dev_err(&pdev->dev, "Couldn't initialise the buffer\n");
goto error_iio_device_register;
}
ret = iio_device_register(indio_dev);
if (ret) {
dev_err(&pdev->dev, "Couldn't register the device.\n");
goto error_adc_buffer_init;
}
return 0;
error_adc_buffer_init:
iio_triggered_buffer_cleanup(indio_dev);
error_iio_device_register:
clk_disable_unprepare(info->clk);
error_adc_clk_enable:
regulator_disable(info->vref);
return ret;
}
static int vf610_adc_probe(struct platform_device *pdev)
{
struct vf610_adc *info;
struct iio_dev *indio_dev;
struct resource *mem;
int irq;
int ret;
u32 channels;
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(struct vf610_adc));
if (!indio_dev) {
dev_err(&pdev->dev, "Failed allocating iio device\n");
return -ENOMEM;
}
info = iio_priv(indio_dev);
info->dev = &pdev->dev;
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
info->regs = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(info->regs))
return PTR_ERR(info->regs);
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(&pdev->dev, "no irq resource?\n");
return -EINVAL;
}
ret = devm_request_irq(info->dev, irq,
vf610_adc_isr, 0,
dev_name(&pdev->dev), info);
if (ret < 0) {
dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
return ret;
}
info->clk = devm_clk_get(&pdev->dev, "adc");
if (IS_ERR(info->clk)) {
dev_err(&pdev->dev, "failed getting clock, err = %ld\n",
PTR_ERR(info->clk));
ret = PTR_ERR(info->clk);
return ret;
}
info->vref = devm_regulator_get(&pdev->dev, "vref");
if (IS_ERR(info->vref))
return PTR_ERR(info->vref);
ret = regulator_enable(info->vref);
if (ret)
return ret;
info->vref_uv = regulator_get_voltage(info->vref);
platform_set_drvdata(pdev, indio_dev);
init_completion(&info->completion);
ret = of_property_read_u32(pdev->dev.of_node,
"num-channels", &channels);
if (ret)
channels = ARRAY_SIZE(vf610_adc_iio_channels);
indio_dev->name = dev_name(&pdev->dev);
indio_dev->dev.parent = &pdev->dev;
indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->info = &vf610_adc_iio_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = vf610_adc_iio_channels;
indio_dev->num_channels = (int)channels;
ret = clk_prepare_enable(info->clk);
if (ret) {
dev_err(&pdev->dev,
"Could not prepare or enable the clock.\n");
goto error_adc_clk_enable;
}
vf610_adc_cfg_init(info);
vf610_adc_hw_init(info);
ret = iio_device_register(indio_dev);
if (ret) {
dev_err(&pdev->dev, "Couldn't register the device.\n");
goto error_iio_device_register;
}
return 0;
error_iio_device_register:
clk_disable_unprepare(info->clk);
error_adc_clk_enable:
regulator_disable(info->vref);
return ret;
}
