From: Antoniu Miclaus <antoniu.miclaus@analog.com>
Date: Tue, 21 Oct 2025 10:53:44 +0000 (+0000)
Subject: iio: adc: ad4080: add support for AD4083
X-Git-Tag: v6.19-rc1~65^2~58^2~51
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4028cbcf3415f6e0810326d87c6e0b494814ae12;p=thirdparty%2Fkernel%2Flinux.git

iio: adc: ad4080: add support for AD4083

Add support for AD4083 16-bit SAR ADC. The AD4083 differs from
AD4080 in resolution (16-bit vs 20-bit) and LVDS CNV clock count
maximum (5 vs 7).

Changes:
- Add AD4083_CHIP_ID definition (0x0053)
- Create ad4083_channel with 16-bit resolution and storage
- Add ad4083_chip_info with lvds_cnv_clk_cnt_max = 5
- Register AD4083 in device ID and OF match tables

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/adc/ad4080.c b/drivers/iio/adc/ad4080.c
index 5940651655dfd..e2cdca2e91749 100644
--- a/drivers/iio/adc/ad4080.c
+++ b/drivers/iio/adc/ad4080.c
@@ -127,6 +127,7 @@
 #define AD4080_SPI_READ						BIT(7)
 #define AD4080_CHIP_ID						0x0050
 #define AD4081_CHIP_ID						0x0051
+#define AD4083_CHIP_ID						0x0053
 #define AD4084_CHIP_ID						0x0054
 
 #define AD4080_LVDS_CNV_CLK_CNT_MAX				7
@@ -439,6 +440,8 @@ static const struct iio_chan_spec ad4080_channel = AD4080_CHANNEL_DEFINE(20, 32)
 
 static const struct iio_chan_spec ad4081_channel = AD4080_CHANNEL_DEFINE(20, 32);
 
+static const struct iio_chan_spec ad4083_channel = AD4080_CHANNEL_DEFINE(16, 16);
+
 static const struct iio_chan_spec ad4084_channel = AD4080_CHANNEL_DEFINE(16, 16);
 
 static const struct ad4080_chip_info ad4080_chip_info = {
@@ -461,6 +464,16 @@ static const struct ad4080_chip_info ad4081_chip_info = {
 	.lvds_cnv_clk_cnt_max = 2,
 };
 
+static const struct ad4080_chip_info ad4083_chip_info = {
+	.name = "ad4083",
+	.product_id = AD4083_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 1,
+	.channels = &ad4083_channel,
+	.lvds_cnv_clk_cnt_max = 5,
+};
+
 static const struct ad4080_chip_info ad4084_chip_info = {
 	.name = "ad4084",
 	.product_id = AD4084_CHIP_ID,
@@ -627,6 +640,7 @@ static int ad4080_probe(struct spi_device *spi)
 static const struct spi_device_id ad4080_id[] = {
 	{ "ad4080", (kernel_ulong_t)&ad4080_chip_info },
 	{ "ad4081", (kernel_ulong_t)&ad4081_chip_info },
+	{ "ad4083", (kernel_ulong_t)&ad4083_chip_info },
 	{ "ad4084", (kernel_ulong_t)&ad4084_chip_info },
 	{ }
 };
@@ -635,6 +649,7 @@ MODULE_DEVICE_TABLE(spi, ad4080_id);
 static const struct of_device_id ad4080_of_match[] = {
 	{ .compatible = "adi,ad4080", &ad4080_chip_info },
 	{ .compatible = "adi,ad4081", &ad4081_chip_info },
+	{ .compatible = "adi,ad4083", &ad4083_chip_info },
 	{ .compatible = "adi,ad4084", &ad4084_chip_info },
 	{ }
 };