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iio: adc: ad4080: add support for AD4087 

Add support for AD4087 14-bit SAR ADC. The AD4087 differs from
AD4080 in resolution (14-bit vs 20-bit) and LVDS CNV clock count
maximum (1 vs 7).

Changes:
- Add AD4087_CHIP_ID definition (0x0057)
- Create ad4087_channel with 14-bit resolution and 16-bit storage
- Add ad4087_chip_info with lvds_cnv_clk_cnt_max = 1
- Register AD4087 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>
pull/1354/merge
Antoniu Miclaus 2025-10-21 10:53:48 +00:00 committed by Jonathan Cameron
parent 24e6d7e9f2
commit 451a9c4a41
1 changed files with 15 additions and 0 deletions
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15
drivers/iio/adc/ad4080.c
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@ -130,6 +130,7 @@
#define AD4083_CHIP_ID 0x0053
#define AD4084_CHIP_ID 0x0054
#define AD4086_CHIP_ID 0x0056
#define AD4087_CHIP_ID 0x0057
#define AD4080_LVDS_CNV_CLK_CNT_MAX 7
@ -447,6 +448,8 @@ static const struct iio_chan_spec ad4084_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 ad4080_chip_info ad4080_chip_info = {
.name = "ad4080",
.product_id = AD4080_CHIP_ID,
@ -497,6 +500,16 @@ static const struct ad4080_chip_info ad4086_chip_info = {
.lvds_cnv_clk_cnt_max = 4,
};
static const struct ad4080_chip_info ad4087_chip_info = {
.name = "ad4087",
.product_id = AD4087_CHIP_ID,
.scale_table = ad4080_scale_table,
.num_scales = ARRAY_SIZE(ad4080_scale_table),
.num_channels = 1,
.channels = &ad4087_channel,
.lvds_cnv_clk_cnt_max = 1,
};
static int ad4080_setup(struct iio_dev *indio_dev)
{
struct ad4080_state *st = iio_priv(indio_dev);
@ -656,6 +669,7 @@ static const struct spi_device_id ad4080_id[] = {
{ "ad4083", (kernel_ulong_t)&ad4083_chip_info },
{ "ad4084", (kernel_ulong_t)&ad4084_chip_info },
{ "ad4086", (kernel_ulong_t)&ad4086_chip_info },
{ "ad4087", (kernel_ulong_t)&ad4087_chip_info },
{ }
};
MODULE_DEVICE_TABLE(spi, ad4080_id);
@ -666,6 +680,7 @@ static const struct of_device_id ad4080_of_match[] = {
{ .compatible = "adi,ad4083", &ad4083_chip_info },
{ .compatible = "adi,ad4084", &ad4084_chip_info },
{ .compatible = "adi,ad4086", &ad4086_chip_info },
{ .compatible = "adi,ad4087", &ad4087_chip_info },
{ }
};
MODULE_DEVICE_TABLE(of, ad4080_of_match);