From a68660e0c63d8f7ab8725f9e771119c08e9f953b Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Thu, 10 May 2007 19:27:27 +0200 Subject: [ALSA] ASoC AC97 device reg bugfix This patch fixes a bug whereby AC97 bus device data was being clobbered when AC97 codecs using the generic ac97_codec.c driver were being registered. Codecs that didn't use the generic driver were unaffected (e.g. WM9712, WM9713). Changes:- o Add new AC97 codec class for custom (or need bus dev registration) AC97 codecs. o Only register/deregister this custom codec device with the AC97 bus. The generic AC97 driver already does this for generic codec devices. This may be related to bug #3038 :- https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3038 Signed-off-by: Liam Girdwood Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- include/sound/soc.h | 4 +++- sound/soc/codecs/ac97.c | 1 + sound/soc/codecs/wm9712.c | 1 + sound/soc/soc-core.c | 18 +++++++++++++++--- 4 files changed, 20 insertions(+), 4 deletions(-) diff --git a/include/sound/soc.h b/include/sound/soc.h index b1dc364b8f7..db6edba8ef0 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -22,7 +22,7 @@ #include #include -#define SND_SOC_VERSION "0.13.0" +#define SND_SOC_VERSION "0.13.1" /* * Convenience kcontrol builders @@ -83,6 +83,7 @@ #define SND_SOC_DAI_AC97 0x1 #define SND_SOC_DAI_I2S 0x2 #define SND_SOC_DAI_PCM 0x4 +#define SND_SOC_DAI_AC97_BUS 0x8 /* for custom i.e. non ac97_codec.c */ /* * DAI hardware audio formats @@ -278,6 +279,7 @@ struct snd_soc_cpu_ops { struct snd_soc_codec_dai { char *name; int id; + unsigned char type; /* DAI capabilities */ struct snd_soc_pcm_stream playback; diff --git a/sound/soc/codecs/ac97.c b/sound/soc/codecs/ac97.c index f3b3b9efbb6..0b8a6f8b366 100644 --- a/sound/soc/codecs/ac97.c +++ b/sound/soc/codecs/ac97.c @@ -45,6 +45,7 @@ static int ac97_prepare(struct snd_pcm_substream *substream) struct snd_soc_codec_dai ac97_dai = { .name = "AC97 HiFi", + .type = SND_SOC_DAI_AC97, .playback = { .stream_name = "AC97 Playback", .channels_min = 1, diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c index 264413a00ca..986b5d59cef 100644 --- a/sound/soc/codecs/wm9712.c +++ b/sound/soc/codecs/wm9712.c @@ -544,6 +544,7 @@ static int ac97_aux_prepare(struct snd_pcm_substream *substream) struct snd_soc_codec_dai wm9712_dai[] = { { .name = "AC97 HiFi", + .type = SND_SOC_DAI_AC97_BUS, .playback = { .stream_name = "HiFi Playback", .channels_min = 1, diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 36519aef55d..92d5d917b73 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -116,6 +116,7 @@ static int soc_ac97_dev_register(struct snd_soc_codec *codec) static inline const char* get_dai_name(int type) { switch(type) { + case SND_SOC_DAI_AC97_BUS: case SND_SOC_DAI_AC97: return "AC97"; case SND_SOC_DAI_I2S: @@ -1099,7 +1100,8 @@ int snd_soc_register_card(struct snd_soc_device *socdev) continue; } } - if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97) + if (socdev->machine->dai_link[i].codec_dai->type == + SND_SOC_DAI_AC97_BUS) ac97 = 1; } snprintf(codec->card->shortname, sizeof(codec->card->shortname), @@ -1148,11 +1150,21 @@ EXPORT_SYMBOL_GPL(snd_soc_register_card); void snd_soc_free_pcms(struct snd_soc_device *socdev) { struct snd_soc_codec *codec = socdev->codec; +#ifdef CONFIG_SND_SOC_AC97_BUS + struct snd_soc_codec_dai *codec_dai; + int i; +#endif mutex_lock(&codec->mutex); #ifdef CONFIG_SND_SOC_AC97_BUS - if (codec->ac97) - soc_ac97_dev_unregister(codec); + for(i = 0; i < codec->num_dai; i++) { + codec_dai = &codec->dai[i]; + if (codec_dai->type == SND_SOC_DAI_AC97_BUS && codec->ac97) { + soc_ac97_dev_unregister(codec); + goto free_card; + } + } +free_card: #endif if (codec->card) -- cgit v1.2.3-70-g09d2