diff options
| author | Peter Meerwald-Stadler <pmeerw@pmeerw.net> | 2016-07-05 10:23:18 (GMT) |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-07-10 13:44:04 (GMT) |
| commit | d978bfdd0cd5fc31c27b587337f88e32deb768eb (patch) | |
| tree | 121b68380c519da8e7837a3e0939f74602a55b16 /drivers/iio/light | |
| parent | 1f25ca11d84a3aa01b2b12a419a1385c2f5513bc (diff) | |
| download | linux-d978bfdd0cd5fc31c27b587337f88e32deb768eb.tar.xz | |
iio: light: vcnl4000: Mention and check support for VCNL4010 and VCNL4020
VCNL4000, VCNL4010 and VCNL4020 chips are fairly compatible from a software
point of view, added features are not yet supported by the driver
patch adds a check for the product ID and demotes the corresponding
dev_info() to dev_dbg()
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/light')
| -rw-r--r-- | drivers/iio/light/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/iio/light/vcnl4000.c | 19 |
2 files changed, 17 insertions, 8 deletions
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 7c566f5..2821747 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -333,11 +333,11 @@ config US5182D will be called us5182d. config VCNL4000 - tristate "VCNL4000 combined ALS and proximity sensor" + tristate "VCNL4000/4010/4020 combined ALS and proximity sensor" depends on I2C help - Say Y here if you want to build a driver for the Vishay VCNL4000 - combined ambient light and proximity sensor. + Say Y here if you want to build a driver for the Vishay VCNL4000, + VCNL4010, VCNL4020 combined ambient light and proximity sensor. To compile this driver as a module, choose M here: the module will be called vcnl4000. diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c index c9d85bb..071ff97 100644 --- a/drivers/iio/light/vcnl4000.c +++ b/drivers/iio/light/vcnl4000.c @@ -1,6 +1,6 @@ /* - * vcnl4000.c - Support for Vishay VCNL4000 combined ambient light and - * proximity sensor + * vcnl4000.c - Support for Vishay VCNL4000/4010/4020 combined ambient + * light and proximity sensor * * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net> * @@ -13,6 +13,8 @@ * TODO: * allow to adjust IR current * proximity threshold and event handling + * periodic ALS/proximity measurement (VCNL4010/20) + * interrupts (VCNL4010/20) */ #include <linux/module.h> @@ -24,6 +26,8 @@ #include <linux/iio/sysfs.h> #define VCNL4000_DRV_NAME "vcnl4000" +#define VCNL4000_ID 0x01 +#define VCNL4010_ID 0x02 /* for VCNL4020, VCNL4010 */ #define VCNL4000_COMMAND 0x80 /* Command register */ #define VCNL4000_PROD_REV 0x81 /* Product ID and Revision ID */ @@ -155,7 +159,7 @@ static int vcnl4000_probe(struct i2c_client *client, { struct vcnl4000_data *data; struct iio_dev *indio_dev; - int ret; + int ret, prod_id; indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); if (!indio_dev) @@ -169,8 +173,13 @@ static int vcnl4000_probe(struct i2c_client *client, if (ret < 0) return ret; - dev_info(&client->dev, "VCNL4000 Ambient light/proximity sensor, Prod %02x, Rev: %02x\n", - ret >> 4, ret & 0xf); + prod_id = ret >> 4; + if (prod_id != VCNL4010_ID && prod_id != VCNL4000_ID) + return -ENODEV; + + dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n", + (prod_id == VCNL4010_ID) ? "VCNL4010/4020" : "VCNL4000", + ret & 0xf); indio_dev->dev.parent = &client->dev; indio_dev->info = &vcnl4000_info; |