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charset="utf-8" Add support for starting the sync process used for data capture alignment. Signed-off-by: Antoniu Miclaus --- changes in v4: - rework data_align function. - rename bit definitions/functions. drivers/iio/adc/adi-axi-adc.c | 37 +++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 2a3a6c3f5e59..2a79c043c0de 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -44,6 +44,7 @@ #define ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N BIT(7) =20 #define ADI_AXI_ADC_REG_CTRL 0x0044 +#define ADI_AXI_ADC_CTRL_SYNC_MSK BIT(3) #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) =20 #define ADI_AXI_ADC_REG_CNTRL_3 0x004c @@ -54,6 +55,9 @@ #define AXI_AD485X_PACKET_FORMAT_32BIT 0x2 #define AXI_AD408X_CNTRL_3_FILTER_EN_MSK BIT(0) =20 +#define ADI_AXI_ADC_REG_SYNC_STATUS 0x0068 +#define ADI_AXI_ADC_SYNC_STATUS_ADC_SYNC_MSK BIT(0) + #define ADI_AXI_ADC_REG_DRP_STATUS 0x0074 #define ADI_AXI_ADC_DRP_LOCKED BIT(17) =20 @@ -416,6 +420,38 @@ static int axi_adc_ad408x_filter_type_set(struct iio_b= ackend *back, AXI_AD408X_CNTRL_3_FILTER_EN_MSK); } =20 +static int axi_adc_ad408x_interface_data_align(struct iio_backend *back, + u32 timeout) +{ + struct adi_axi_adc_state *st =3D iio_backend_get_priv(back); + bool sync_en; + u32 val; + int ret; + + ret =3D regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CTRL, + ADI_AXI_ADC_CTRL_SYNC_MSK); + if (ret) + return ret; + + do { + ret =3D regmap_read(st->regmap, ADI_AXI_ADC_REG_SYNC_STATUS, &val); + if (ret) + return ret; + + sync_en =3D FIELD_GET(ADI_AXI_ADC_SYNC_STATUS_ADC_SYNC_MSK, val); + + if (!sync_en) + dev_dbg(st->dev, "Not Locked: Running Bit Slip\n"); + + fsleep(500); + } while (--timeout && !sync_en); + + if (!timeout) + return -ETIMEDOUT; + + return 0; +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -605,6 +641,7 @@ static const struct iio_backend_ops adi_ad408x_ops =3D { .free_buffer =3D axi_adc_free_buffer, .data_sample_trigger =3D axi_adc_data_sample_trigger, .filter_type_set =3D axi_adc_ad408x_filter_type_set, + .interface_data_align =3D axi_adc_ad408x_interface_data_align, .debugfs_reg_access =3D iio_backend_debugfs_ptr(axi_adc_reg_access), .debugfs_print_chan_status =3D iio_backend_debugfs_ptr(axi_adc_debugfs_pr= int_chan_status), }; --=20 2.49.0