[PATCH 2/2] iio: adc: ad4080: add support for AD4883

[Antoniu Miclaus]

Add support for the AD4883, a dual-channel, 16-bit, 40 MSPS SAR ADC.

The AD4883 is the dual-channel variant of the AD4083, sharing the same
register map and SPI interface as the rest of the AD4080 family. Like
the AD4880, it uses two independent ADC channels, each with its own SPI
configuration interface.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
---
 drivers/iio/adc/ad4080.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/iio/adc/ad4080.c b/drivers/iio/adc/ad4080.c
index c7ecf6971be4..543728c7e88c 100644
--- a/drivers/iio/adc/ad4080.c
+++ b/drivers/iio/adc/ad4080.c
@@ -135,6 +135,7 @@
 #define AD4087_CHIP_ID						0x0057
 #define AD4088_CHIP_ID						0x0058
 #define AD4880_CHIP_ID						0x0059
+#define AD4883_CHIP_ID						0x005B
 #define AD4884_CHIP_ID						0x005C
 
 #define AD4080_MAX_CHANNELS					2
@@ -541,6 +542,11 @@ static const struct iio_chan_spec ad4880_channels[] = {
 	AD4880_CHANNEL_DEFINE(20, 32, 1),
 };
 
+static const struct iio_chan_spec ad4883_channels[] = {
+	AD4880_CHANNEL_DEFINE(16, 16, 0),
+	AD4880_CHANNEL_DEFINE(16, 16, 1),
+};
+
 static const struct iio_chan_spec ad4884_channels[] = {
 	AD4880_CHANNEL_DEFINE(16, 16, 0),
 	AD4880_CHANNEL_DEFINE(16, 16, 1),
@@ -646,6 +652,16 @@ static const struct ad4080_chip_info ad4880_chip_info = {
 	.lvds_cnv_clk_cnt_max = AD4080_LVDS_CNV_CLK_CNT_MAX,
 };
 
+static const struct ad4080_chip_info ad4883_chip_info = {
+	.name = "ad4883",
+	.product_id = AD4883_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 2,
+	.channels = ad4883_channels,
+	.lvds_cnv_clk_cnt_max = 5,
+};
+
 static const struct ad4080_chip_info ad4884_chip_info = {
 	.name = "ad4884",
 	.product_id = AD4884_CHIP_ID,
@@ -858,6 +874,7 @@ static const struct spi_device_id ad4080_id[] = {
 	{ .name = "ad4087", .driver_data = (kernel_ulong_t)&ad4087_chip_info },
 	{ .name = "ad4088", .driver_data = (kernel_ulong_t)&ad4088_chip_info },
 	{ .name = "ad4880", .driver_data = (kernel_ulong_t)&ad4880_chip_info },
+	{ .name = "ad4883", .driver_data = (kernel_ulong_t)&ad4883_chip_info },
 	{ .name = "ad4884", .driver_data = (kernel_ulong_t)&ad4884_chip_info },
 	{ }
 };
@@ -874,6 +891,7 @@ static const struct of_device_id ad4080_of_match[] = {
 	{ .compatible = "adi,ad4087", &ad4087_chip_info },
 	{ .compatible = "adi,ad4088", &ad4088_chip_info },
 	{ .compatible = "adi,ad4880", &ad4880_chip_info },
+	{ .compatible = "adi,ad4883", &ad4883_chip_info },
 	{ .compatible = "adi,ad4884", &ad4884_chip_info },
 	{ }
 };
-- 
2.43.0