[PATCH 2/2] iio: adc: ad4080: add support for AD4885

[Antoniu Miclaus]

Add support for the AD4885, a dual-channel, 16-bit, 10 MSPS SAR ADC.

The AD4885 is the dual-channel variant of the AD4085, sharing the same
register map and SPI interface as the rest of the AD4080 family. Like
the AD4884, it uses two independent ADC channels, each with its own SPI
configuration interface, but it runs at a lower maximum throughput and
therefore uses the same maximum LVDS conversion clock count as the
AD4085.

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 994625a7cf8b..4843ecdd91a8 100644
--- a/drivers/iio/adc/ad4080.c
+++ b/drivers/iio/adc/ad4080.c
@@ -137,6 +137,7 @@
 #define AD4880_CHIP_ID						0x0059
 #define AD4883_CHIP_ID						0x005B
 #define AD4884_CHIP_ID						0x005C
+#define AD4885_CHIP_ID						0x005D
 
 #define AD4080_MAX_CHANNELS					2
 
@@ -561,6 +562,11 @@ static const struct iio_chan_spec ad4884_channels[] = {
 	AD4880_CHANNEL_DEFINE(16, 16, 1),
 };
 
+static const struct iio_chan_spec ad4885_channels[] = {
+	AD4880_CHANNEL_DEFINE(16, 16, 0),
+	AD4880_CHANNEL_DEFINE(16, 16, 1),
+};
+
 static const struct ad4080_chip_info ad4080_chip_info = {
 	.name = "ad4080",
 	.product_id = AD4080_CHIP_ID,
@@ -681,6 +687,16 @@ static const struct ad4080_chip_info ad4884_chip_info = {
 	.lvds_cnv_clk_cnt_max = 2,
 };
 
+static const struct ad4080_chip_info ad4885_chip_info = {
+	.name = "ad4885",
+	.product_id = AD4885_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 2,
+	.channels = ad4885_channels,
+	.lvds_cnv_clk_cnt_max = 8,
+};
+
 static int ad4080_setup_channel(struct ad4080_state *st, unsigned int ch)
 {
 	struct device *dev = regmap_get_device(st->regmap[ch]);
@@ -890,6 +906,7 @@ static const struct spi_device_id ad4080_id[] = {
 	{ .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 },
+	{ .name = "ad4885", .driver_data = (kernel_ulong_t)&ad4885_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, ad4080_id);
@@ -907,6 +924,7 @@ static const struct of_device_id ad4080_of_match[] = {
 	{ .compatible = "adi,ad4880", &ad4880_chip_info },
 	{ .compatible = "adi,ad4883", &ad4883_chip_info },
 	{ .compatible = "adi,ad4884", &ad4884_chip_info },
+	{ .compatible = "adi,ad4885", &ad4885_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ad4080_of_match);
-- 
2.43.0