linux-kernel - [PATCH 09/14] iio: adc: adi-axi-adc: add self sync support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250220135429.8615-10-antoniu.miclaus@analog.com>
Date: Thu, 20 Feb 2025 15:54:19 +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 09/14] iio: adc: adi-axi-adc: add self sync support

Add support for data capture synchronization through CNV signal or
bit-slip.

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 c7811667f853..7f6dc0ff7c54 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -53,6 +53,7 @@
 #define   AXI_AD485X_PACKET_FORMAT_20BIT	0x0
 #define   AXI_AD485X_PACKET_FORMAT_24BIT	0x1
 #define   AXI_AD485X_PACKET_FORMAT_32BIT	0x2
+#define   AXI_AD408X_CNTRL_3_SELF_SYNC_EN_MSK	BIT(1)
 #define   AXI_AD408X_CNTRL_3_FILTER_EN_MSK	BIT(0)
 
 #define ADI_AXI_ADC_REG_DRP_STATUS		0x0074
@@ -436,6 +437,22 @@ static int axi_adc_ad408x_bitslip_disable(struct iio_backend *back)
 				 AXI_AD408X_CTRL_BITSLIP_EN_MSK);
 }
 
+static int axi_adc_ad408x_self_sync_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_CNTRL_3,
+			       AXI_AD408X_CNTRL_3_SELF_SYNC_EN_MSK);
+}
+
+static int axi_adc_ad408x_self_sync_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_CNTRL_3,
+				 AXI_AD408X_CNTRL_3_SELF_SYNC_EN_MSK);
+}
+
 static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
 						 struct iio_dev *indio_dev)
 {
@@ -628,6 +645,8 @@ static const struct iio_backend_ops adi_ad408x_ops = {
 	.filter_disable = axi_adc_ad408x_filter_disable,
 	.bitslip_enable = axi_adc_ad408x_bitslip_enable,
 	.bitslip_disable = axi_adc_ad408x_bitslip_disable,
+	.self_sync_enable = axi_adc_ad408x_self_sync_enable,
+	.self_sync_disable = axi_adc_ad408x_self_sync_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