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

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Message-ID: <20250220135429.8615-9-antoniu.miclaus@analog.com>
Date: Thu, 20 Feb 2025 15:54:18 +0200
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: <jic23@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
        <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH 08/14] iio: adc: adi-axi-adc: add bitslip enable/disable

Add support for enabling/disabling the sync process.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
 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