[PATCH 08/14] iio: adc: adi-axi-adc: add bitslip enable/disable

From: Antoniu Miclaus
Date: Thu Feb 20 2025 - 08:59:55 EST


Add support for enabling/disabling the sync process.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
---
drivers/iio/adc/adi-axi-adc.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index d4466e02fc28..c7811667f853 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 AXI_AD408X_CTRL_BITSLIP_EN_MSK BIT(3)
#define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1)

#define ADI_AXI_ADC_REG_CNTRL_3 0x004c
@@ -419,6 +420,22 @@ static int axi_adc_ad408x_filter_disable(struct iio_backend *back)
AXI_AD408X_CNTRL_3_FILTER_EN_MSK);
}

+static int axi_adc_ad408x_bitslip_enable(struct iio_backend *back)
+{
+ struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+
+ return regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CTRL,
+ AXI_AD408X_CTRL_BITSLIP_EN_MSK);
+}
+
+static int axi_adc_ad408x_bitslip_disable(struct iio_backend *back)
+{
+ struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+
+ return regmap_clear_bits(st->regmap, ADI_AXI_ADC_REG_CTRL,
+ AXI_AD408X_CTRL_BITSLIP_EN_MSK);
+}
+
static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
struct iio_dev *indio_dev)
{
@@ -609,6 +626,8 @@ static const struct iio_backend_ops adi_ad408x_ops = {
.data_sample_trigger = axi_adc_data_sample_trigger,
.filter_enable = axi_adc_ad408x_filter_enable,
.filter_disable = axi_adc_ad408x_filter_disable,
+ .bitslip_enable = axi_adc_ad408x_bitslip_enable,
+ .bitslip_disable = axi_adc_ad408x_bitslip_disable,
.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),
};
--
2.48.1