iio: adc: ad4080: add support for AD4082, AD4085 and AD4088

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>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad4080.c b/drivers/iio/adc/ad4080.c
index 7cf3b6ed7940a07d4e20e1576f57679c96484979..fc261d3d76872ccf630b653c971345836987fb7c 100644 (file)
--- 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);