[alsa-devel] [PATCH 1/2] ALSA: hda/ca0132 - setup/cleanup streams

[Takashi Iwai]

At Wed, 19 Feb 2014 14:27:07 +0800,
Hsin-Yu Chao wrote:
> 
> When a HDMI stream is opened with the same stream tag
> as a following opened stream to ca0132, audio will be
> heard from two ports simultaneously.
> Fix this issue by change to use snd_hda_codec_setup_stream
> and snd_hda_codec_cleanup_stream instead, so that an
> inactive stream can be marked as 'dirty' when found
> with a conflict stream tag, and then get purified.
> 
> Signed-off-by: Hsin-Yu Chao <hychao at chromium.org>
> Reviewed-by: Chih-Chung Chang <chihchung at chromium.org>

Thanks, I applied both patches now with Cc to stable.


Takashi

> ---
>  sound/pci/hda/patch_ca0132.c | 66 +++++---------------------------------------
>  1 file changed, 7 insertions(+), 59 deletions(-)
> 
> diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
> index 54d1479..0aa72ee 100644
> --- a/sound/pci/hda/patch_ca0132.c
> +++ b/sound/pci/hda/patch_ca0132.c
> @@ -2662,60 +2662,6 @@ static bool dspload_wait_loaded(struct hda_codec *codec)
>  }
>  
>  /*
> - * PCM stuffs
> - */
> -static void ca0132_setup_stream(struct hda_codec *codec, hda_nid_t nid,
> -				 u32 stream_tag,
> -				 int channel_id, int format)
> -{
> -	unsigned int oldval, newval;
> -
> -	if (!nid)
> -		return;
> -
> -	snd_printdd(
> -		   "ca0132_setup_stream: NID=0x%x, stream=0x%x, "
> -		   "channel=%d, format=0x%x\n",
> -		   nid, stream_tag, channel_id, format);
> -
> -	/* update the format-id if changed */
> -	oldval = snd_hda_codec_read(codec, nid, 0,
> -				    AC_VERB_GET_STREAM_FORMAT,
> -				    0);
> -	if (oldval != format) {
> -		msleep(20);
> -		snd_hda_codec_write(codec, nid, 0,
> -				    AC_VERB_SET_STREAM_FORMAT,
> -				    format);
> -	}
> -
> -	oldval = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
> -	newval = (stream_tag << 4) | channel_id;
> -	if (oldval != newval) {
> -		snd_hda_codec_write(codec, nid, 0,
> -				    AC_VERB_SET_CHANNEL_STREAMID,
> -				    newval);
> -	}
> -}
> -
> -static void ca0132_cleanup_stream(struct hda_codec *codec, hda_nid_t nid)
> -{
> -	unsigned int val;
> -
> -	if (!nid)
> -		return;
> -
> -	snd_printdd(KERN_INFO "ca0132_cleanup_stream: NID=0x%x\n", nid);
> -
> -	val = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0);
> -	if (!val)
> -		return;
> -
> -	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0);
> -	snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0);
> -}
> -
> -/*
>   * PCM callbacks
>   */
>  static int ca0132_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
> @@ -2726,7 +2672,7 @@ static int ca0132_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
>  {
>  	struct ca0132_spec *spec = codec->spec;
>  
> -	ca0132_setup_stream(codec, spec->dacs[0], stream_tag, 0, format);
> +	snd_hda_codec_setup_stream(codec, spec->dacs[0], stream_tag, 0, format);
>  
>  	return 0;
>  }
> @@ -2745,7 +2691,7 @@ static int ca0132_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
>  	if (spec->effects_switch[PLAY_ENHANCEMENT - EFFECT_START_NID])
>  		msleep(50);
>  
> -	ca0132_cleanup_stream(codec, spec->dacs[0]);
> +	snd_hda_codec_cleanup_stream(codec, spec->dacs[0]);
>  
>  	return 0;
>  }
> @@ -2824,8 +2770,8 @@ static int ca0132_capture_pcm_prepare(struct hda_pcm_stream *hinfo,
>  {
>  	struct ca0132_spec *spec = codec->spec;
>  
> -	ca0132_setup_stream(codec, spec->adcs[substream->number],
> -			    stream_tag, 0, format);
> +	snd_hda_codec_setup_stream(codec, spec->adcs[substream->number],
> +				   stream_tag, 0, format);
>  
>  	return 0;
>  }
> @@ -2839,7 +2785,7 @@ static int ca0132_capture_pcm_cleanup(struct hda_pcm_stream *hinfo,
>  	if (spec->dsp_state == DSP_DOWNLOADING)
>  		return 0;
>  
> -	ca0132_cleanup_stream(codec, hinfo->nid);
> +	snd_hda_codec_cleanup_stream(codec, hinfo->nid);
>  	return 0;
>  }
>  
> @@ -4742,6 +4688,8 @@ static int patch_ca0132(struct hda_codec *codec)
>  		return err;
>  
>  	codec->patch_ops = ca0132_patch_ops;
> +	codec->pcm_format_first = 1;
> +	codec->no_sticky_stream = 1;
>  
>  	return 0;
>  }
> -- 
> 1.8.3.2
>