Commit 8278c08a authored by Frank Li's avatar Frank Li Committed by Jonathan Cameron
Browse files

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



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

Reviewed-by: default avatarHaibo Chen <haibo.chen@nxp.com>
Signed-off-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20241126195256.2441622-2-Frank.Li@nxp.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 207149d9

drivers/iio/adc/vf610_adc.c

+18 −2
Original line number Diff line number Diff line
@@ -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);