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Apparently the settings from ad9265 were copied by mistake when support for the device was added to the driver. Fixes: 4606d0f4b05f ("iio: adc: ad9467: add support for AD9434 high-speed A= DC") Signed-off-by: Tomas Melin Reviewed-by: Andy Shevchenko Reviewed-by: David Lechner Reviewed-by: Nuno S=C3=A1 --- drivers/iio/adc/ad9467.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c index f7a9f46ea0dc405e25f312197df4b2131871b4bc..2d8f8da3671dac61994a1864a82= cdbef7f54c1af 100644 --- a/drivers/iio/adc/ad9467.c +++ b/drivers/iio/adc/ad9467.c @@ -95,7 +95,7 @@ =20 #define CHIPID_AD9434 0x6A #define AD9434_DEF_OUTPUT_MODE 0x00 -#define AD9434_REG_VREF_MASK 0xC0 +#define AD9434_REG_VREF_MASK GENMASK(4, 0) =20 /* * Analog Devices AD9467 16-Bit, 200/250 MSPS ADC --=20 2.47.3 From nobody Sat Feb 7 17:48:44 2026 Received: from GVXPR05CU001.outbound.protection.outlook.com (mail-swedencentralazon11023086.outbound.protection.outlook.com [52.101.83.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4EA57302143; 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Among the devices currently supported by this driver, this setting is specific to ad9434. The offset can be used to calibrate the output against a known input. The register is called offset, but the procedure is best mapped internally with calibbias operation. Signed-off-by: Tomas Melin Reviewed-by: David Lechner --- drivers/iio/adc/ad9467.c | 60 ++++++++++++++++++++++++++++++++++++++++++++= +++- 1 file changed, 59 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c index 2d8f8da3671dac61994a1864a82cdbef7f54c1af..c3cf7ae977d4279ce5e80a7c956= c3844483eb8bd 100644 --- a/drivers/iio/adc/ad9467.c +++ b/drivers/iio/adc/ad9467.c @@ -145,6 +145,7 @@ struct ad9467_chip_info { unsigned int num_lanes; unsigned int dco_en; unsigned int test_points; + const int *offset_range; /* data clock output */ bool has_dco; bool has_dco_invert; @@ -234,6 +235,10 @@ static int ad9467_reg_access(struct iio_dev *indio_dev= , unsigned int reg, return 0; } =20 +static const int ad9434_offset_range[] =3D { + -128, 1, 127, +}; + static const unsigned int ad9265_scale_table[][2] =3D { {1250, 0x00}, {1500, 0x40}, {1750, 0x80}, {2000, 0xC0}, }; @@ -298,7 +303,24 @@ static void __ad9467_get_scale(struct ad9467_state *st= , int index, } =20 static const struct iio_chan_spec ad9434_channels[] =3D { - AD9467_CHAN(0, BIT(IIO_CHAN_INFO_SCALE), 0, 12, 's'), + { + .type =3D IIO_VOLTAGE, + .indexed =3D 1, + .channel =3D 0, + .info_mask_shared_by_type =3D + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_SAMP_FREQ) | + BIT(IIO_CHAN_INFO_CALIBBIAS), + .info_mask_shared_by_type_available =3D + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_CALIBBIAS), + .scan_index =3D 0, + .scan_type =3D { + .sign =3D 's', + .realbits =3D 12, + .storagebits =3D 16, + }, + }, }; =20 static const struct iio_chan_spec ad9467_channels[] =3D { @@ -367,6 +389,7 @@ static const struct ad9467_chip_info ad9434_chip_tbl = =3D { .default_output_mode =3D AD9434_DEF_OUTPUT_MODE, .vref_mask =3D AD9434_REG_VREF_MASK, .num_lanes =3D 6, + .offset_range =3D ad9434_offset_range, }; =20 static const struct ad9467_chip_info ad9265_chip_tbl =3D { @@ -499,6 +522,33 @@ static int ad9467_set_scale(struct ad9467_state *st, i= nt val, int val2) return -EINVAL; } =20 +static int ad9467_get_offset(struct ad9467_state *st, int *val) +{ + int ret; + + ret =3D ad9467_spi_read(st, AN877_ADC_REG_OFFSET); + if (ret < 0) + return ret; + *val =3D ret; + + return IIO_VAL_INT; +} + +static int ad9467_set_offset(struct ad9467_state *st, int val) +{ + int ret; + + if (val < st->info->offset_range[0] || val > st->info->offset_range[2]) + return -EINVAL; + + ret =3D ad9467_spi_write(st, AN877_ADC_REG_OFFSET, val); + if (ret < 0) + return ret; + /* Sync registers */ + return ad9467_spi_write(st, AN877_ADC_REG_TRANSFER, + AN877_ADC_TRANSFER_SYNC); +} + static int ad9467_outputmode_set(struct ad9467_state *st, unsigned int mod= e) { int ret; @@ -802,6 +852,8 @@ static int ad9467_read_raw(struct iio_dev *indio_dev, struct ad9467_state *st =3D iio_priv(indio_dev); =20 switch (m) { + case IIO_CHAN_INFO_CALIBBIAS: + return ad9467_get_offset(st, val); case IIO_CHAN_INFO_SCALE: return ad9467_get_scale(st, val, val2); case IIO_CHAN_INFO_SAMP_FREQ: @@ -836,6 +888,8 @@ static int ad9467_write_raw(struct iio_dev *indio_dev, int ret; =20 switch (mask) { + case IIO_CHAN_INFO_CALIBBIAS: + return ad9467_set_offset(st, val); case IIO_CHAN_INFO_SCALE: return ad9467_set_scale(st, val, val2); case IIO_CHAN_INFO_SAMP_FREQ: @@ -874,6 +928,10 @@ static int ad9467_read_avail(struct iio_dev *indio_dev, const struct ad9467_chip_info *info =3D st->info; =20 switch (mask) { + case IIO_CHAN_INFO_CALIBBIAS: + *type =3D IIO_VAL_INT; + *vals =3D info->offset_range; + return IIO_AVAIL_RANGE; case IIO_CHAN_INFO_SCALE: *vals =3D (const int *)st->scales; *type =3D IIO_VAL_INT_PLUS_MICRO; --=20 2.47.3