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.
Before this patch:
$ modinfo sound/soc/codecs/snd-soc-sta529.ko | grep alias alias: i2c:sta529
After this patch:
$ modinfo sound/soc/codecs/snd-soc-sta529.ko | grep alias alias: of:N*T*Cst,sta529C* alias: of:N*T*Cst,sta529 alias: i2c:sta529
Signed-off-by: Javier Martinez Canillas javier@osg.samsung.com ---
sound/soc/codecs/sta529.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/sound/soc/codecs/sta529.c b/sound/soc/codecs/sta529.c index d4b384e4b266..660734359bf3 100644 --- a/sound/soc/codecs/sta529.c +++ b/sound/soc/codecs/sta529.c @@ -375,9 +375,16 @@ static const struct i2c_device_id sta529_i2c_id[] = { }; MODULE_DEVICE_TABLE(i2c, sta529_i2c_id);
+static const struct of_device_id sta529_of_match[] = { + { .compatible = "st,sta529", }, + { } +}; +MODULE_DEVICE_TABLE(of, sta529_of_match); + static struct i2c_driver sta529_i2c_driver = { .driver = { .name = "sta529", + .of_match_table = sta529_of_match, }, .probe = sta529_i2c_probe, .remove = sta529_i2c_remove,