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| author | Antoniu Miclaus <antoniu.miclaus@analog.com> | 2025-10-07 14:15:25 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-10-19 13:59:22 +0300 |
| commit | d34ad6467200380c8f8337ceefee9f3d8cee5492 (patch) | |
| tree | feedb4510a2fc09648c11af8f92387b8a2486635 | |
| parent | 83185903b4eca86e0c7145d62e55de768eeb9e7b (diff) | |
| download | linux-d34ad6467200380c8f8337ceefee9f3d8cee5492.tar.xz | |
iio: adc: ad4080: add support for AD4081
Add support for AD4081 20-bit SAR ADC. The AD4081 has the same
resolution as AD4080 (20-bit) but differs in LVDS CNV clock count
maximum (2 vs 7).
Changes:
- Add AD4081_CHIP_ID definition (0x0051)
- Create ad4081_channel with 20-bit resolution and 32-bit storage
- Add ad4081_chip_info with lvds_cnv_clk_cnt_max = 2
- Register AD4081 in device ID and OF match tables
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>
| -rw-r--r-- | drivers/iio/adc/ad4080.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad4080.c b/drivers/iio/adc/ad4080.c index d243b4336ac6..5940651655df 100644 --- a/drivers/iio/adc/ad4080.c +++ b/drivers/iio/adc/ad4080.c @@ -126,6 +126,7 @@ /* Miscellaneous Definitions */ #define AD4080_SPI_READ BIT(7) #define AD4080_CHIP_ID 0x0050 +#define AD4081_CHIP_ID 0x0051 #define AD4084_CHIP_ID 0x0054 #define AD4080_LVDS_CNV_CLK_CNT_MAX 7 @@ -436,6 +437,8 @@ static struct iio_chan_spec_ext_info ad4080_ext_info[] = { 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 ad4084_channel = AD4080_CHANNEL_DEFINE(16, 16); static const struct ad4080_chip_info ad4080_chip_info = { @@ -448,6 +451,16 @@ static const struct ad4080_chip_info ad4080_chip_info = { .lvds_cnv_clk_cnt_max = AD4080_LVDS_CNV_CLK_CNT_MAX, }; +static const struct ad4080_chip_info ad4081_chip_info = { + .name = "ad4081", + .product_id = AD4081_CHIP_ID, + .scale_table = ad4080_scale_table, + .num_scales = ARRAY_SIZE(ad4080_scale_table), + .num_channels = 1, + .channels = &ad4081_channel, + .lvds_cnv_clk_cnt_max = 2, +}; + static const struct ad4080_chip_info ad4084_chip_info = { .name = "ad4084", .product_id = AD4084_CHIP_ID, @@ -613,6 +626,7 @@ 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 }, { "ad4084", (kernel_ulong_t)&ad4084_chip_info }, { } }; @@ -620,6 +634,7 @@ 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,ad4084", &ad4084_chip_info }, { } }; |