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iio: adc: ti-adc128s052: Simplify using be16_to_cpu()

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The register data is 12-bit big-endian data. Use be16_to_cpu() to do
the conversion, and simple bitwise AND for masking to make it more
obvious.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/8202060d90221beb9b8cf467606641349ad47fe9.1744022065.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matti Vaittinen
2025-04-07 14:35:56 +03:00
committed by Jonathan Cameron
parent 085831cfce
commit 7af2ea72d6
1 changed files with 7 additions and 6 deletions
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13
drivers/iio/adc/ti-adc128s052.c
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@@ -28,7 +28,10 @@ struct adc128 {
struct regulator *reg;
struct mutex lock;
u8 buffer[2] __aligned(IIO_DMA_MINALIGN);
union {
__be16 buffer16;
u8 buffer[2];
} __aligned(IIO_DMA_MINALIGN);
};
static int adc128_adc_conversion(struct adc128 *adc, u8 channel)
@@ -40,20 +43,18 @@ static int adc128_adc_conversion(struct adc128 *adc, u8 channel)
adc->buffer[0] = channel << 3;
adc->buffer[1] = 0;
ret = spi_write(adc->spi, &adc->buffer, 2);
ret = spi_write(adc->spi, &adc->buffer, sizeof(adc->buffer));
if (ret < 0) {
mutex_unlock(&adc->lock);
return ret;
}
ret = spi_read(adc->spi, &adc->buffer, 2);
ret = spi_read(adc->spi, &adc->buffer16, sizeof(adc->buffer16));
mutex_unlock(&adc->lock);
if (ret < 0)
return ret;
return ((adc->buffer[0] << 8 | adc->buffer[1]) & 0xFFF);
return be16_to_cpu(adc->buffer16) & 0xFFF;
}
static int adc128_read_raw(struct iio_dev *indio_dev,