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-rt5645.ko | grep alias alias: acpi*:10EC3270:* alias: acpi*:10EC5640:* alias: acpi*:10EC5650:* alias: acpi*:10EC5648:* alias: acpi*:10EC5645:* alias: i2c:rt5650 alias: i2c:rt5645
After this patch:
$ modinfo sound/soc/codecs/snd-soc-rt5645.ko | grep alias alias: of:N*T*Crealtek,rt5650C* alias: of:N*T*Crealtek,rt5650 alias: of:N*T*Crealtek,rt5645C* alias: of:N*T*Crealtek,rt5645 alias: acpi*:10EC3270:* alias: acpi*:10EC5640:* alias: acpi*:10EC5650:* alias: acpi*:10EC5648:* alias: acpi*:10EC5645:* alias: i2c:rt5650 alias: i2c:rt5645
Signed-off-by: Javier Martinez Canillas javier@osg.samsung.com ---
sound/soc/codecs/rt5645.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index e149f3ce5401..87844a45886a 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -3542,6 +3542,15 @@ static const struct i2c_device_id rt5645_i2c_id[] = { }; MODULE_DEVICE_TABLE(i2c, rt5645_i2c_id);
+#ifdef CONFIG_OF +static const struct of_device_id rt5645_of_match[] = { + { .compatible = "realtek,rt5645", }, + { .compatible = "realtek,rt5650", }, + { } +}; +MODULE_DEVICE_TABLE(of, rt5645_of_match); +#endif + #ifdef CONFIG_ACPI static const struct acpi_device_id rt5645_acpi_match[] = { { "10EC5645", 0 }, @@ -3912,6 +3921,7 @@ static void rt5645_i2c_shutdown(struct i2c_client *i2c) static struct i2c_driver rt5645_i2c_driver = { .driver = { .name = "rt5645", + .of_match_table = of_match_ptr(rt5645_of_match), .acpi_match_table = ACPI_PTR(rt5645_acpi_match), }, .probe = rt5645_i2c_probe,