diff options
| author | Antoniu Miclaus <antoniu.miclaus@analog.com> | 2025-05-16 11:26:26 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-06-09 07:45:34 +0100 |
| commit | d2ca659c3d1573e04a1304ecd2c8f2d485a708df (patch) | |
| tree | 84a09af79cbf29c3a7cbe09341614076db517d95 | |
| parent | 8ee8009420e7b94d2335c03528f5084f41b25511 (diff) | |
| download | linux-d2ca659c3d1573e04a1304ecd2c8f2d485a708df.tar.gz linux-d2ca659c3d1573e04a1304ecd2c8f2d485a708df.zip | |
iio: adc: adi-axi-adc: add data align process
Add support for starting the sync process used for data
capture alignment.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-7-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/adc/adi-axi-adc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 9531aa39faee..a21e5a7e13cf 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) #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) #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) +#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) @@ -416,6 +420,24 @@ static int axi_adc_ad408x_filter_type_set(struct iio_backend *back, AXI_AD408X_CNTRL_3_FILTER_EN_MSK); } +static int axi_adc_ad408x_interface_data_align(struct iio_backend *back, + u32 timeout_us) +{ + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + u32 val; + int ret; + + ret = regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CTRL, + ADI_AXI_ADC_CTRL_SYNC_MSK); + if (ret) + return ret; + + return regmap_read_poll_timeout(st->regmap, ADI_AXI_ADC_REG_SYNC_STATUS, + val, + FIELD_GET(ADI_AXI_ADC_SYNC_STATUS_ADC_SYNC_MSK, val), + 1, timeout_us); +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -605,6 +627,7 @@ static const struct iio_backend_ops adi_ad408x_ops = { .free_buffer = axi_adc_free_buffer, .data_sample_trigger = axi_adc_data_sample_trigger, .filter_type_set = axi_adc_ad408x_filter_type_set, + .interface_data_align = axi_adc_ad408x_interface_data_align, .debugfs_reg_access = iio_backend_debugfs_ptr(axi_adc_reg_access), .debugfs_print_chan_status = iio_backend_debugfs_ptr(axi_adc_debugfs_print_chan_status), }; |