add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/iio/light/si1133.c
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@@ -17,6 +17,8 @@
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 #include <linux/util_macros.h>
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+#include <asm/unaligned.h>
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+
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 #define SI1133_REG_PART_ID		0x00
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 #define SI1133_REG_REV_ID		0x01
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 #define SI1133_REG_MFR_ID		0x02
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@@ -103,8 +105,6 @@
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 #define SI1133_LUX_OUTPUT_FRACTION	12
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 #define SI1133_LUX_BUFFER_SIZE		9
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 #define SI1133_MEASURE_BUFFER_SIZE	3
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-
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-#define SI1133_SIGN_BIT_INDEX 23
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 static const int si1133_scale_available[] = {
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 	1, 2, 4, 8, 16, 32, 64, 128};
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@@ -633,8 +633,7 @@
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 	if (err)
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 		return err;
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-	*val = sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
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-			     SI1133_SIGN_BIT_INDEX);
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+	*val = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
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 	return err;
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 }
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@@ -723,16 +722,11 @@
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 	if (err)
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 		return err;
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-	high_vis =
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-		sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
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-			      SI1133_SIGN_BIT_INDEX);
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+	high_vis = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
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-	low_vis =
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-		sign_extend32((buffer[3] << 16) | (buffer[4] << 8) | buffer[5],
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-			      SI1133_SIGN_BIT_INDEX);
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+	low_vis = sign_extend32(get_unaligned_be24(&buffer[3]), 23);
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-	ir = sign_extend32((buffer[6] << 16) | (buffer[7] << 8) | buffer[8],
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-			   SI1133_SIGN_BIT_INDEX);
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+	ir = sign_extend32(get_unaligned_be24(&buffer[6]), 23);
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 	if (high_vis > SI1133_ADC_THRESHOLD || ir > SI1133_ADC_THRESHOLD)
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 		lux = si1133_calc_polynomial(high_vis, ir,
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@@ -1021,7 +1015,6 @@
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 	i2c_set_clientdata(client, iio_dev);
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 	data->client = client;
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-	iio_dev->dev.parent = &client->dev;
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 	iio_dev->name = id->name;
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 	iio_dev->channels = si1133_channels;
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 	iio_dev->num_channels = ARRAY_SIZE(si1133_channels);