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staging: iio: light: isl29018: add ACPI support

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Add support for enumerating the device through ACPI.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Laurentiu Palcu 2014-01-09 10:20:00 +00:00 committed by Jonathan Cameron
parent f007d7f143
commit dc4ecaf21c
1 changed files with 40 additions and 6 deletions
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46
drivers/staging/iio/light/isl29018.c
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@ -30,6 +30,7 @@
#include <linux/slab.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/acpi.h>
#define CONVERSION_TIME_MS 100
@ -656,12 +657,28 @@ static const struct chip_info chip_info_tbl[] = {
},
};
static const char *isl29018_match_acpi_device(struct device *dev, int *data)
{
const struct acpi_device_id *id;
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!id)
return NULL;
*data = (int) id->driver_data;
return dev_name(dev);
}
static int isl29018_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct isl29018_chip *chip;
struct iio_dev *indio_dev;
int err;
const char *name = NULL;
int dev_id = 0;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
if (indio_dev == NULL) {
@ -673,9 +690,17 @@ static int isl29018_probe(struct i2c_client *client,
i2c_set_clientdata(client, indio_dev);
chip->dev = &client->dev;
if (id) {
name = id->name;
dev_id = id->driver_data;
}
if (ACPI_HANDLE(&client->dev))
name = isl29018_match_acpi_device(&client->dev, &dev_id);
mutex_init(&chip->lock);
chip->type = id->driver_data;
chip->type = dev_id;
chip->lux_scale = 1;
chip->lux_uscale = 0;
chip->range = 1000;
@ -683,7 +708,7 @@ static int isl29018_probe(struct i2c_client *client,
chip->suspended = false;
chip->regmap = devm_regmap_init_i2c(client,
chip_info_tbl[id->driver_data].regmap_cfg);
chip_info_tbl[dev_id].regmap_cfg);
if (IS_ERR(chip->regmap)) {
err = PTR_ERR(chip->regmap);
dev_err(chip->dev, "regmap initialization failed: %d\n", err);
@ -694,10 +719,10 @@ static int isl29018_probe(struct i2c_client *client,
if (err)
return err;
indio_dev->info = chip_info_tbl[id->driver_data].indio_info;
indio_dev->channels = chip_info_tbl[id->driver_data].channels;
indio_dev->num_channels = chip_info_tbl[id->driver_data].num_channels;
indio_dev->name = id->name;
indio_dev->info = chip_info_tbl[dev_id].indio_info;
indio_dev->channels = chip_info_tbl[dev_id].channels;
indio_dev->num_channels = chip_info_tbl[dev_id].num_channels;
indio_dev->name = name;
indio_dev->dev.parent = &client->dev;
indio_dev->modes = INDIO_DIRECT_MODE;
err = devm_iio_device_register(&client->dev, indio_dev);
@ -747,6 +772,14 @@ static SIMPLE_DEV_PM_OPS(isl29018_pm_ops, isl29018_suspend, isl29018_resume);
#define ISL29018_PM_OPS NULL
#endif
static const struct acpi_device_id isl29018_acpi_match[] = {
{"ISL29018", isl29018},
{"ISL29023", isl29023},
{"ISL29035", isl29035},
{},
};
MODULE_DEVICE_TABLE(acpi, isl29018_acpi_match);
static const struct i2c_device_id isl29018_id[] = {
{"isl29018", isl29018},
{"isl29023", isl29023},
@ -768,6 +801,7 @@ static struct i2c_driver isl29018_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "isl29018",
.acpi_match_table = ACPI_PTR(isl29018_acpi_match),
.pm = ISL29018_PM_OPS,
.owner = THIS_MODULE,
.of_match_table = isl29018_of_match,