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Input: adxl34x - add OF match support 

The I2C subsystem can match devices without explicit OF support based on
the part of their compatible property after the comma. However, this
mechanism uses the first compatible value only. For adxl34x OF device
nodes the compatible property will contain the more specific
"adi,adxl345" or "adi,adxl346" value first. This prevents the device
node from being matched with the adxl34x driver.

Fix this by adding an OF match table with an "adi,adxl345" compatible
entry. There's no need to add the "adi,adxl346" entry as the ADXL346 is
backward-compatible with the ADXL345 with differences handled by runtime
detection of the device model.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Laurent Pinchart 2015-05-21 16:07:37 -07:00 committed by Dmitry Torokhov
parent e465bf6fc5
commit 3a38958d24
1 changed files with 21 additions and 0 deletions
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21
drivers/input/misc/adxl34x-i2c.c
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@ -10,6 +10,7 @@
#include <linux/input.h> /* BUS_I2C */
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/types.h>
#include <linux/pm.h>
#include "adxl34x.h"
@ -135,11 +136,31 @@ static const struct i2c_device_id adxl34x_id[] = {
MODULE_DEVICE_TABLE(i2c, adxl34x_id);
#ifdef CONFIG_OF
static const struct of_device_id adxl34x_of_id[] = {
/*
* The ADXL346 is backward-compatible with the ADXL345. Differences are
* handled by runtime detection of the device model, there's thus no
* need for listing the "adi,adxl346" compatible value explicitly.
*/
{ .compatible = "adi,adxl345", },
/*
* Deprecated, DT nodes should use one or more of the device-specific
* compatible values "adi,adxl345" and "adi,adxl346".
*/
{ .compatible = "adi,adxl34x", },
{ }
};
MODULE_DEVICE_TABLE(of, adxl34x_of_id);
#endif
static struct i2c_driver adxl34x_driver = {
.driver = {
.name = "adxl34x",
.owner = THIS_MODULE,
.pm = &adxl34x_i2c_pm,
.of_match_table = of_match_ptr(adxl34x_of_id),
},
.probe = adxl34x_i2c_probe,
.remove = adxl34x_i2c_remove,