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iio: adc: vf610_adc: limit i.MX6SX's channel number to 4

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i.MX6SX only has 4 ADC channels, so limit channel numbers to 4 for
compatible string 'fsl,imx6sx-adc'.

Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20241126195256.2441622-2-Frank.Li@nxp.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Frank Li 2024-11-26 14:52:56 -05:00 committed by Jonathan Cameron
parent 207149d9f7
commit 8278c08ad2
1 changed files with 18 additions and 2 deletions
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20
drivers/iio/adc/vf610_adc.c
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@ -177,6 +177,10 @@ struct vf610_adc {
} scan;
};
struct vf610_chip_info {
u8 num_channels;
};
static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
static const u32 vf610_lst_adder[] = { 3, 5, 7, 9, 13, 17, 21, 25 };
@ -808,8 +812,17 @@ static const struct iio_info vf610_adc_iio_info = {
.attrs = &vf610_attribute_group,
};
static const struct vf610_chip_info vf610_chip_info = {
.num_channels = ARRAY_SIZE(vf610_adc_iio_channels),
};
static const struct vf610_chip_info imx6sx_chip_info = {
.num_channels = 4,
};
static const struct of_device_id vf610_adc_match[] = {
{ .compatible = "fsl,vf610-adc", },
{ .compatible = "fsl,imx6sx-adc", .data = &imx6sx_chip_info},
{ .compatible = "fsl,vf610-adc", .data = &vf610_chip_info},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, vf610_adc_match);
@ -823,6 +836,7 @@ static void vf610_adc_action_remove(void *d)
static int vf610_adc_probe(struct platform_device *pdev)
{
const struct vf610_chip_info *chip_info;
struct device *dev = &pdev->dev;
struct vf610_adc *info;
struct iio_dev *indio_dev;
@ -840,6 +854,8 @@ static int vf610_adc_probe(struct platform_device *pdev)
if (IS_ERR(info->regs))
return PTR_ERR(info->regs);
chip_info = device_get_match_data(dev);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
@ -881,7 +897,7 @@ static int vf610_adc_probe(struct platform_device *pdev)
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);
indio_dev->num_channels = chip_info->num_channels;
vf610_adc_cfg_init(info);
vf610_adc_hw_init(info);