mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
3d838118c6
The PM280 has an internal standby-mode, but to really save power we should shut the sensor down and disconnect the power. With the proper .pm hooks we can enable both runtime and system power management of the sensor. We use the *force callbacks from the system PM hooks. When the sensor comes back we always reconfigure it to make sure it is ready to roll as expected. Cc: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/of.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "bmp280.h"
|
|
|
|
static int bmp280_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct regmap *regmap;
|
|
const struct regmap_config *regmap_config;
|
|
|
|
switch (id->driver_data) {
|
|
case BMP180_CHIP_ID:
|
|
regmap_config = &bmp180_regmap_config;
|
|
break;
|
|
case BMP280_CHIP_ID:
|
|
case BME280_CHIP_ID:
|
|
regmap_config = &bmp280_regmap_config;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
regmap = devm_regmap_init_i2c(client, regmap_config);
|
|
if (IS_ERR(regmap)) {
|
|
dev_err(&client->dev, "failed to allocate register map\n");
|
|
return PTR_ERR(regmap);
|
|
}
|
|
|
|
return bmp280_common_probe(&client->dev,
|
|
regmap,
|
|
id->driver_data,
|
|
id->name,
|
|
client->irq);
|
|
}
|
|
|
|
static int bmp280_i2c_remove(struct i2c_client *client)
|
|
{
|
|
return bmp280_common_remove(&client->dev);
|
|
}
|
|
|
|
static const struct acpi_device_id bmp280_acpi_i2c_match[] = {
|
|
{"BMP0280", BMP280_CHIP_ID },
|
|
{"BMP0180", BMP180_CHIP_ID },
|
|
{"BMP0085", BMP180_CHIP_ID },
|
|
{"BME0280", BME280_CHIP_ID },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, bmp280_acpi_i2c_match);
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id bmp280_of_i2c_match[] = {
|
|
{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
|
|
{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
|
|
{ .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
|
|
{ .compatible = "bosch,bmp085", .data = (void *)BMP180_CHIP_ID },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
|
|
#else
|
|
#define bmp280_of_i2c_match NULL
|
|
#endif
|
|
|
|
static const struct i2c_device_id bmp280_i2c_id[] = {
|
|
{"bmp280", BMP280_CHIP_ID },
|
|
{"bmp180", BMP180_CHIP_ID },
|
|
{"bmp085", BMP180_CHIP_ID },
|
|
{"bme280", BME280_CHIP_ID },
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
|
|
|
|
static struct i2c_driver bmp280_i2c_driver = {
|
|
.driver = {
|
|
.name = "bmp280",
|
|
.acpi_match_table = ACPI_PTR(bmp280_acpi_i2c_match),
|
|
.of_match_table = of_match_ptr(bmp280_of_i2c_match),
|
|
.pm = &bmp280_dev_pm_ops,
|
|
},
|
|
.probe = bmp280_i2c_probe,
|
|
.remove = bmp280_i2c_remove,
|
|
.id_table = bmp280_i2c_id,
|
|
};
|
|
module_i2c_driver(bmp280_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
|
|
MODULE_DESCRIPTION("Driver for Bosch Sensortec BMP180/BMP280 pressure and temperature sensor");
|
|
MODULE_LICENSE("GPL v2");
|