Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: 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>
authored by
Frank Li
and committed by
Jonathan Cameron
8278c08a
207149d9
+18
-2
+18
-2
drivers/iio/adc/vf610_adc.c
+18
-2
drivers/iio/adc/vf610_adc.c
···
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} scan;
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};
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+
struct vf610_chip_info {
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+
u8 num_channels;
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+
};
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+
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static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
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static const u32 vf610_lst_adder[] = { 3, 5, 7, 9, 13, 17, 21, 25 };
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···
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.attrs = &vf610_attribute_group,
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};
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+
static const struct vf610_chip_info vf610_chip_info = {
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.num_channels = ARRAY_SIZE(vf610_adc_iio_channels),
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+
};
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+
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static const struct vf610_chip_info imx6sx_chip_info = {
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+
.num_channels = 4,
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+
};
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+
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static const struct of_device_id vf610_adc_match[] = {
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-
{ .compatible = "fsl,vf610-adc", },
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+
{ .compatible = "fsl,imx6sx-adc", .data = &imx6sx_chip_info},
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{ .compatible = "fsl,vf610-adc", .data = &vf610_chip_info},
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, vf610_adc_match);
···
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static int vf610_adc_probe(struct platform_device *pdev)
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{
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+
const struct vf610_chip_info *chip_info;
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struct device *dev = &pdev->dev;
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struct vf610_adc *info;
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struct iio_dev *indio_dev;
···
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info->regs = devm_platform_ioremap_resource(pdev, 0);
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if (IS_ERR(info->regs))
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return PTR_ERR(info->regs);
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+
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+
chip_info = device_get_match_data(dev);
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
···
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indio_dev->info = &vf610_adc_iio_info;
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indio_dev->modes = INDIO_DIRECT_MODE;
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indio_dev->channels = vf610_adc_iio_channels;
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-
indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels);
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+
indio_dev->num_channels = chip_info->num_channels;
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vf610_adc_cfg_init(info);
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vf610_adc_hw_init(info);