ASoC: ac97: Add DT support

Add an of_match_table with 'realtek,alc203' to provide
DT support for the AC97 generic codec driver.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Link: https://patch.msgid.link/20250409-loongson1-ac97-v2-4-65d5db96a046@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/ac97.c b/sound/soc/codecs/ac97.c
index 0e013edfe63d7c210155f593f71b27a987a6fe31..d8444a083af2e20b068c4346c36165e19f6096bf 100644 (file)
--- a/sound/soc/codecs/ac97.c
+++ b/sound/soc/codecs/ac97.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>
@@ -127,9 +128,18 @@ static int ac97_probe(struct platform_device *pdev)
                        &soc_component_dev_ac97, &ac97_dai, 1);
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id ac97_codec_of_match[] = {
+       { .compatible = "realtek,alc203", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, ac97_codec_of_match);
+#endif
+
 static struct platform_driver ac97_codec_driver = {
        .driver = {
                .name = "ac97-codec",
+               .of_match_table = of_match_ptr(ac97_codec_of_match),
        },
 
        .probe = ac97_probe,