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Commit 5cf015d9 authored by Javier Martinez Canillas's avatar Javier Martinez Canillas Committed by Mark Brown
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ASoC: wm8978: Add OF device ID table 



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-wm8978.ko | grep alias
alias:          i2c:wm8978

After this patch:

$ modinfo sound/soc/codecs/snd-soc-wm8978.ko | grep alias
alias:          i2c:wm8978
alias:          of:N*T*Cwlf,wm8978C*
alias:          of:N*T*Cwlf,wm8978

Signed-off-by: default avatarJavier Martinez Canillas <javier@osg.samsung.com>
Acked-by: default avatarCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a5de5b74

sound/soc/codecs/wm8978.c

+7 −0
Original line number Diff line number Diff line
@@ -1071,9 +1071,16 @@ static const struct i2c_device_id wm8978_i2c_id[] = { 
};

MODULE_DEVICE_TABLE(i2c, wm8978_i2c_id);



static const struct of_device_id wm8978_of_match[] = {

	{ .compatible = "wlf,wm8978", },

	{ }

};

MODULE_DEVICE_TABLE(of, wm8978_of_match);



static struct i2c_driver wm8978_i2c_driver = {

	.driver = {

		.name = "wm8978",

		.of_match_table = wm8978_of_match,

	},

	.probe =    wm8978_i2c_probe,

	.remove =   wm8978_i2c_remove,