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iio: adc: adi-axi-adc: add data align process

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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>
This commit is contained in:
Antoniu Miclaus 2025-05-16 11:26:26 +03:00 committed by Jonathan Cameron
parent 8ee8009420
commit d2ca659c3d
1 changed files with 23 additions and 0 deletions
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23
drivers/iio/adc/adi-axi-adc.c
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@ -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),
};