[PATCH v3 2/2] iio: adc: ad4080: add support for AD4082, AD4085 and AD4088

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

Add support for the AD4082, AD4085 and AD4088 SAR ADCs. These devices
share the same resolution as their base variants but differ in LVDS CNV
clock count maximum:
  - AD4082 (20-bit, like AD4080): lvds_cnv_clk_cnt_max 8 vs 7
  - AD4085 (16-bit, like AD4084): lvds_cnv_clk_cnt_max 8 vs 2
  - AD4088 (14-bit, like AD4087): lvds_cnv_clk_cnt_max 8 vs 1

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
Changes in v3:
  - Merged individual per-device driver patches into a single patch
    adding AD4082, AD4085 and AD4088.

 drivers/iio/adc/ad4080.c | 45 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/drivers/iio/adc/ad4080.c b/drivers/iio/adc/ad4080.c
index 7cf3b6ed7940..fc261d3d7687 100644
--- a/drivers/iio/adc/ad4080.c
+++ b/drivers/iio/adc/ad4080.c
@@ -127,10 +127,13 @@
 #define AD4080_SPI_READ						BIT(7)
 #define AD4080_CHIP_ID						0x0050
 #define AD4081_CHIP_ID						0x0051
+#define AD4082_CHIP_ID						0x0052
 #define AD4083_CHIP_ID						0x0053
 #define AD4084_CHIP_ID						0x0054
+#define AD4085_CHIP_ID						0x0055
 #define AD4086_CHIP_ID						0x0056
 #define AD4087_CHIP_ID						0x0057
+#define AD4088_CHIP_ID						0x0058
 
 #define AD4080_LVDS_CNV_CLK_CNT_MAX				7
 
@@ -442,14 +445,20 @@ 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 ad4082_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 iio_chan_spec ad4085_channel = AD4080_CHANNEL_DEFINE(16, 16);
+
 static const struct iio_chan_spec ad4086_channel = AD4080_CHANNEL_DEFINE(14, 16);
 
 static const struct iio_chan_spec ad4087_channel = AD4080_CHANNEL_DEFINE(14, 16);
 
+static const struct iio_chan_spec ad4088_channel = AD4080_CHANNEL_DEFINE(14, 16);
+
 static const struct ad4080_chip_info ad4080_chip_info = {
 	.name = "ad4080",
 	.product_id = AD4080_CHIP_ID,
@@ -470,6 +479,16 @@ static const struct ad4080_chip_info ad4081_chip_info = {
 	.lvds_cnv_clk_cnt_max = 2,
 };
 
+static const struct ad4080_chip_info ad4082_chip_info = {
+	.name = "ad4082",
+	.product_id = AD4082_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 1,
+	.channels = &ad4082_channel,
+	.lvds_cnv_clk_cnt_max = 8,
+};
+
 static const struct ad4080_chip_info ad4083_chip_info = {
 	.name = "ad4083",
 	.product_id = AD4083_CHIP_ID,
@@ -490,6 +509,16 @@ static const struct ad4080_chip_info ad4084_chip_info = {
 	.lvds_cnv_clk_cnt_max = 2,
 };
 
+static const struct ad4080_chip_info ad4085_chip_info = {
+	.name = "ad4085",
+	.product_id = AD4085_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 1,
+	.channels = &ad4085_channel,
+	.lvds_cnv_clk_cnt_max = 8,
+};
+
 static const struct ad4080_chip_info ad4086_chip_info = {
 	.name = "ad4086",
 	.product_id = AD4086_CHIP_ID,
@@ -510,6 +539,16 @@ static const struct ad4080_chip_info ad4087_chip_info = {
 	.lvds_cnv_clk_cnt_max = 1,
 };
 
+static const struct ad4080_chip_info ad4088_chip_info = {
+	.name = "ad4088",
+	.product_id = AD4088_CHIP_ID,
+	.scale_table = ad4080_scale_table,
+	.num_scales = ARRAY_SIZE(ad4080_scale_table),
+	.num_channels = 1,
+	.channels = &ad4088_channel,
+	.lvds_cnv_clk_cnt_max = 8,
+};
+
 static int ad4080_setup(struct iio_dev *indio_dev)
 {
 	struct ad4080_state *st = iio_priv(indio_dev);
@@ -666,10 +705,13 @@ 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 },
+	{ "ad4082", (kernel_ulong_t)&ad4082_chip_info },
 	{ "ad4083", (kernel_ulong_t)&ad4083_chip_info },
 	{ "ad4084", (kernel_ulong_t)&ad4084_chip_info },
+	{ "ad4085", (kernel_ulong_t)&ad4085_chip_info },
 	{ "ad4086", (kernel_ulong_t)&ad4086_chip_info },
 	{ "ad4087", (kernel_ulong_t)&ad4087_chip_info },
+	{ "ad4088", (kernel_ulong_t)&ad4088_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, ad4080_id);
@@ -677,10 +719,13 @@ 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,ad4082", &ad4082_chip_info },
 	{ .compatible = "adi,ad4083", &ad4083_chip_info },
 	{ .compatible = "adi,ad4084", &ad4084_chip_info },
+	{ .compatible = "adi,ad4085", &ad4085_chip_info },
 	{ .compatible = "adi,ad4086", &ad4086_chip_info },
 	{ .compatible = "adi,ad4087", &ad4087_chip_info },
+	{ .compatible = "adi,ad4088", &ad4088_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ad4080_of_match);
-- 
2.43.0