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power: supply: ltc2941-battery-gauge: Add OF device ID table

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The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Javier Martinez Canillas 2017-03-29 12:00:57 -04:00 committed by Sebastian Reichel
parent c67c372ca6
commit 9697277ed5
1 changed files with 17 additions and 2 deletions
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19
drivers/power/supply/ltc2941-battery-gauge.c
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@ -9,6 +9,7 @@
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/swab.h>
@ -61,7 +62,7 @@ struct ltc294x_info {
struct power_supply *supply; /* Supply pointer */
struct power_supply_desc supply_desc; /* Supply description */
struct delayed_work work; /* Work scheduler */
int num_regs; /* Number of registers (chip type) */
unsigned long num_regs; /* Number of registers (chip type) */
int charge; /* Last charge register content */
int r_sense; /* mOhm */
int Qlsb; /* nAh */
@ -387,7 +388,7 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
np = of_node_get(client->dev.of_node);
info->num_regs = id->driver_data;
info->num_regs = (unsigned long)of_device_get_match_data(&client->dev);
info->supply_desc.name = np->name;
/* r_sense can be negative, when sense+ is connected to the battery
@ -497,9 +498,23 @@ static const struct i2c_device_id ltc294x_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, ltc294x_i2c_id);
static const struct of_device_id ltc294x_i2c_of_match[] = {
{
.compatible = "lltc,ltc2941",
.data = (void *)LTC2941_NUM_REGS
},
{
.compatible = "lltc,ltc2943",
.data = (void *)LTC2943_NUM_REGS
},
{ },
};
MODULE_DEVICE_TABLE(of, ltc294x_i2c_of_match);
static struct i2c_driver ltc294x_driver = {
.driver = {
.name = "LTC2941",
.of_match_table = ltc294x_i2c_of_match,
.pm = LTC294X_PM_OPS,
},
.probe = ltc294x_i2c_probe,