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iio: light: vcnl4000: Mention and check support for VCNL4010 and VCNL4020

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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>
This commit is contained in:
Peter Meerwald-Stadler 2016-07-05 12:23:18 +02:00 committed by Jonathan Cameron
parent 1f25ca11d8
commit d978bfdd0c
2 changed files with 17 additions and 8 deletions
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6
drivers/iio/light/Kconfig
View File

@ -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.

19
drivers/iio/light/vcnl4000.c
View File

@ -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;