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iio: dac: bd79703: Add chip data

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Add a chip data structure which allows handling the different variants
(ROHM BD79700, BD79701) with different number of channels.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/2cacb4bec5455fe1aa58a0b28d2d91b96a396d1a.1743576022.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matti Vaittinen 2025-04-02 09:46:13 +03:00 committed by Jonathan Cameron
parent f026928c20
commit 67c318c46c
1 changed files with 24 additions and 5 deletions
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29
drivers/iio/dac/rohm-bd79703.c
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@ -38,11 +38,19 @@ static const struct regmap_config bd79703_regmap_config = {
.cache_type = REGCACHE_RBTREE,
};
/* Dynamic driver private data */
struct bd79703_data {
struct regmap *regmap;
int vfs;
};
/* Static, IC type specific data for different variants */
struct bd7970x_chip_data {
const char *name;
const struct iio_chan_spec *channels;
int num_channels;
};
static int bd79703_read_raw(struct iio_dev *idev,
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
@ -94,13 +102,24 @@ static const struct iio_chan_spec bd79703_channels[] = {
BD79703_CHAN(5),
};
static const struct bd7970x_chip_data bd79703_chip_data = {
.name = "bd79703",
.channels = bd79703_channels,
.num_channels = ARRAY_SIZE(bd79703_channels),
};
static int bd79703_probe(struct spi_device *spi)
{
const struct bd7970x_chip_data *cd;
struct device *dev = &spi->dev;
struct bd79703_data *data;
struct iio_dev *idev;
int ret;
cd = spi_get_device_match_data(spi);
if (!cd)
return -ENODEV;
idev = devm_iio_device_alloc(dev, sizeof(*data));
if (!idev)
return -ENOMEM;
@ -121,11 +140,11 @@ static int bd79703_probe(struct spi_device *spi)
return dev_err_probe(dev, ret, "Failed to get Vfs\n");
data->vfs = ret;
idev->channels = bd79703_channels;
idev->num_channels = ARRAY_SIZE(bd79703_channels);
idev->channels = cd->channels;
idev->num_channels = cd->num_channels;
idev->modes = INDIO_DIRECT_MODE;
idev->info = &bd79703_info;
idev->name = "bd79703";
idev->name = cd->name;
/* Initialize all to output zero */
ret = regmap_write(data->regmap, BD79703_REG_OUT_ALL, 0);
@ -136,13 +155,13 @@ static int bd79703_probe(struct spi_device *spi)
}
static const struct spi_device_id bd79703_id[] = {
{ "bd79703", },
{ "bd79703", (kernel_ulong_t)&bd79703_chip_data },
{ }
};
MODULE_DEVICE_TABLE(spi, bd79703_id);
static const struct of_device_id bd79703_of_match[] = {
{ .compatible = "rohm,bd79703", },
{ .compatible = "rohm,bd79703", .data = &bd79703_chip_data },
{ }
};
MODULE_DEVICE_TABLE(of, bd79703_of_match);