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iio: amplifiers: ad8366: add device tree support

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Drop the enum ID, split chip info table into per-device structs and add
of_match_table. Additionally, add 'name' field into the chip info struct,
dropping the usage of spi_get_device_id().

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Rodrigo Alencar 2026-02-16 17:10:53 +00:00 committed by Jonathan Cameron
parent 314b184b82
commit d5e02d0d00
1 changed files with 59 additions and 48 deletions
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107
drivers/iio/amplifiers/ad8366.c
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@ -29,15 +29,8 @@
#include <linux/iio/iio.h> #include <linux/iio/iio.h>
enum ad8366_type {
ID_AD8366,
ID_ADA4961,
ID_ADL5240,
ID_HMC792,
ID_HMC1119,
};
struct ad8366_info { struct ad8366_info {
const char *name;
int gain_min; int gain_min;
int gain_max; int gain_max;
int gain_step; int gain_step;
@ -68,38 +61,45 @@ static size_t ad8366_pack_code(const unsigned char *code, size_t num_channels,
return sizeof(__be16); return sizeof(__be16);
} }
static const struct ad8366_info ad8366_infos[] = { static const struct ad8366_info ad8366_chip_info = {
[ID_AD8366] = { .name = "ad8366",
.gain_min = 4500, .gain_min = 4500,
.gain_max = 20500, .gain_max = 20500,
.gain_step = 253, .gain_step = 253,
.num_channels = 2, .num_channels = 2,
.pack_code = ad8366_pack_code, .pack_code = ad8366_pack_code,
}, };
[ID_ADA4961] = {
.gain_min = -6000, static const struct ad8366_info ada4961_chip_info = {
.gain_max = 15000, .name = "ada4961",
.gain_step = -1000, .gain_min = -6000,
.num_channels = 1, .gain_max = 15000,
}, .gain_step = -1000,
[ID_ADL5240] = { .num_channels = 1,
.gain_min = -11500, };
.gain_max = 20000,
.gain_step = 500, static const struct ad8366_info adl5240_chip_info = {
.num_channels = 1, .name = "adl5240",
}, .gain_min = -11500,
[ID_HMC792] = { .gain_max = 20000,
.gain_min = -15750, .gain_step = 500,
.gain_max = 0, .num_channels = 1,
.gain_step = 250, };
.num_channels = 1,
}, static const struct ad8366_info hmc792_chip_info = {
[ID_HMC1119] = { .name = "hmc792a",
.gain_min = -31750, .gain_min = -15750,
.gain_max = 0, .gain_max = 0,
.gain_step = -250, .gain_step = 250,
.num_channels = 1, .num_channels = 1,
}, };
static const struct ad8366_info hmc1119_chip_info = {
.name = "hmc1119",
.gain_min = -31750,
.gain_max = 0,
.gain_step = -250,
.num_channels = 1,
}; };
static int ad8366_write_code(struct ad8366_state *st) static int ad8366_write_code(struct ad8366_state *st)
@ -237,14 +237,14 @@ static int ad8366_probe(struct spi_device *spi)
return dev_err_probe(dev, ret, "Failed to get regulator\n"); return dev_err_probe(dev, ret, "Failed to get regulator\n");
st->spi = spi; st->spi = spi;
st->info = &ad8366_infos[spi_get_device_id(spi)->driver_data]; st->info = spi_get_device_match_data(spi);
rstc = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL); rstc = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL);
if (IS_ERR(rstc)) if (IS_ERR(rstc))
return dev_err_probe(dev, PTR_ERR(rstc), return dev_err_probe(dev, PTR_ERR(rstc),
"Failed to get reset controller\n"); "Failed to get reset controller\n");
indio_dev->name = spi_get_device_id(spi)->name; indio_dev->name = st->info->name;
indio_dev->info = &ad8366_info; indio_dev->info = &ad8366_info;
indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = ad8366_channels; indio_dev->channels = ad8366_channels;
@ -258,18 +258,29 @@ static int ad8366_probe(struct spi_device *spi)
} }
static const struct spi_device_id ad8366_id[] = { static const struct spi_device_id ad8366_id[] = {
{"ad8366", ID_AD8366}, { "ad8366", (kernel_ulong_t)&ad8366_chip_info },
{"ada4961", ID_ADA4961}, { "ada4961", (kernel_ulong_t)&ada4961_chip_info },
{"adl5240", ID_ADL5240}, { "adl5240", (kernel_ulong_t)&adl5240_chip_info },
{"hmc792a", ID_HMC792}, { "hmc792a", (kernel_ulong_t)&hmc792_chip_info },
{"hmc1119", ID_HMC1119}, { "hmc1119", (kernel_ulong_t)&hmc1119_chip_info },
{ } { }
}; };
MODULE_DEVICE_TABLE(spi, ad8366_id); MODULE_DEVICE_TABLE(spi, ad8366_id);
static const struct of_device_id ad8366_of_match[] = {
{ .compatible = "adi,ad8366", .data = &ad8366_chip_info },
{ .compatible = "adi,ada4961", .data = &ada4961_chip_info },
{ .compatible = "adi,adl5240", .data = &adl5240_chip_info },
{ .compatible = "adi,hmc792a", .data = &hmc792_chip_info },
{ .compatible = "adi,hmc1119", .data = &hmc1119_chip_info },
{ }
};
MODULE_DEVICE_TABLE(of, ad8366_of_match);
static struct spi_driver ad8366_driver = { static struct spi_driver ad8366_driver = {
.driver = { .driver = {
.name = KBUILD_MODNAME, .name = KBUILD_MODNAME,
.of_match_table = ad8366_of_match,
}, },
.probe = ad8366_probe, .probe = ad8366_probe,
.id_table = ad8366_id, .id_table = ad8366_id,