[PATCH 1/4] ALSA: hda - Simplify PCM setup overrides

Takashi Iwai
2015-03-18T08:51:01Z

This patch does two things:
- code refactoring with a local helper function,
- allow codec drivers to provide the specific PCM stream info pointers
only for overriding the non-NULL entries, instead of copying the
whole.

This simplifies the codec driver side (currently the only user is
alc269's 44kHz fixed rate).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/pci/hda/hda_generic.c | 110 +++++++++++++++++++++++-------------------
sound/pci/hda/patch_realtek.c | 41 ----------------
2 files changed, 60 insertions(+), 91 deletions(-)

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index ebdbc023583d..27ce54701f0f 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -5137,6 +5137,33 @@ static void fill_pcm_stream_name(char *str, size_t len, const char *sfx,
strlcat(str, sfx, len);
}

+/* copy PCM stream info from @default_str, and override non-NULL entries
+ * from @spec_str and @nid
+ */
+static void setup_pcm_stream(struct hda_pcm_stream *str,
+ const struct hda_pcm_stream *default_str,
+ const struct hda_pcm_stream *spec_str,
+ hda_nid_t nid)
+{
+ *str = *default_str;
+ if (nid)
+ str->nid = nid;
+ if (spec_str) {
+ if (spec_str->substreams)
+ str->substreams = spec_str->substreams;
+ if (spec_str->channels_min)
+ str->channels_min = spec_str->channels_min;
+ if (spec_str->channels_max)
+ str->channels_max = spec_str->channels_max;
+ if (spec_str->rates)
+ str->rates = spec_str->rates;
+ if (spec_str->formats)
+ str->formats = spec_str->formats;
+ if (spec_str->maxbps)
+ str->maxbps = spec_str->maxbps;
+ }
+}
+
/**
* snd_hda_gen_build_pcms - build PCM streams based on the parsed results
* @codec: the HDA codec
@@ -5147,7 +5174,6 @@ int snd_hda_gen_build_pcms(struct hda_codec *codec)
{
struct hda_gen_spec *spec = codec->spec;
struct hda_pcm *info;
- const struct hda_pcm_stream *p;
bool have_multi_adcs;

if (spec->no_analog)
@@ -5162,11 +5188,10 @@ int snd_hda_gen_build_pcms(struct hda_codec *codec)
spec->pcm_rec[0] = info;

if (spec->multiout.num_dacs > 0) {
- p = spec->stream_analog_playback;
- if (!p)
- p = &pcm_analog_playback;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK] = *p;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->multiout.dac_nids[0];
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_PLAYBACK],
+ &pcm_analog_playback,
+ spec->stream_analog_playback,
+ spec->multiout.dac_nids[0]);
info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max =
spec->multiout.max_channels;
if (spec->autocfg.line_out_type == AUTO_PIN_SPEAKER_OUT &&
@@ -5175,15 +5200,11 @@ int snd_hda_gen_build_pcms(struct hda_codec *codec)
snd_pcm_2_1_chmaps;
}
if (spec->num_adc_nids) {
- p = spec->stream_analog_capture;
- if (!p) {
- if (spec->dyn_adc_switch)
- p = &dyn_adc_pcm_analog_capture;
- else
- p = &pcm_analog_capture;
- }
- info->stream[SNDRV_PCM_STREAM_CAPTURE] = *p;
- info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->adc_nids[0];
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_CAPTURE],
+ (spec->dyn_adc_switch ?
+ &dyn_adc_pcm_analog_capture : &pcm_analog_capture),
+ spec->stream_analog_capture,
+ spec->adc_nids[0]);
}

skip_analog:
@@ -5202,20 +5223,16 @@ int snd_hda_gen_build_pcms(struct hda_codec *codec)
info->pcm_type = spec->dig_out_type;
else
info->pcm_type = HDA_PCM_TYPE_SPDIF;
- if (spec->multiout.dig_out_nid) {
- p = spec->stream_digital_playback;
- if (!p)
- p = &pcm_digital_playback;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK] = *p;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->multiout.dig_out_nid;
- }
- if (spec->dig_in_nid) {
- p = spec->stream_digital_capture;
- if (!p)
- p = &pcm_digital_capture;
- info->stream[SNDRV_PCM_STREAM_CAPTURE] = *p;
- info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->dig_in_nid;
- }
+ if (spec->multiout.dig_out_nid)
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_PLAYBACK],
+ &pcm_digital_playback,
+ spec->stream_digital_playback,
+ spec->multiout.dig_out_nid);
+ if (spec->dig_in_nid)
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_CAPTURE],
+ &pcm_digital_capture,
+ spec->stream_digital_capture,
+ spec->dig_in_nid);
}

if (spec->no_analog)
@@ -5236,31 +5253,24 @@ int snd_hda_gen_build_pcms(struct hda_codec *codec)
if (!info)
return -ENOMEM;
spec->pcm_rec[2] = info;
- if (spec->alt_dac_nid) {
- p = spec->stream_analog_alt_playback;
- if (!p)
- p = &pcm_analog_alt_playback;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK] = *p;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid =
- spec->alt_dac_nid;
- } else {
- info->stream[SNDRV_PCM_STREAM_PLAYBACK] =
- pcm_null_stream;
- info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = 0;
- }
+ if (spec->alt_dac_nid)
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_PLAYBACK],
+ &pcm_analog_alt_playback,
+ spec->stream_analog_alt_playback,
+ spec->alt_dac_nid);
+ else
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_PLAYBACK],
+ &pcm_null_stream, NULL, 0);
if (have_multi_adcs) {
- p = spec->stream_analog_alt_capture;
- if (!p)
- p = &pcm_analog_alt_capture;
- info->stream[SNDRV_PCM_STREAM_CAPTURE] = *p;
- info->stream[SNDRV_PCM_STREAM_CAPTURE].nid =
- spec->adc_nids[1];
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_CAPTURE],
+ &pcm_analog_alt_capture,
+ spec->stream_analog_alt_capture,
+ spec->adc_nids[1]);
info->stream[SNDRV_PCM_STREAM_CAPTURE].substreams =
spec->num_adc_nids - 1;
} else {
- info->stream[SNDRV_PCM_STREAM_CAPTURE] =
- pcm_null_stream;
- info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = 0;
+ setup_pcm_stream(&info->stream[SNDRV_PCM_STREAM_CAPTURE],
+ &pcm_null_stream, NULL, 0);
}
}

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 2a61bda8115d..124eacf67fc4 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2602,53 +2602,12 @@ static int patch_alc268(struct hda_codec *codec)
* ALC269
*/

-static int playback_pcm_open(struct hda_pcm_stream *hinfo,
- struct hda_codec *codec,
- struct snd_pcm_substream *substream)
-{
- struct hda_gen_spec *spec = codec->spec;
- return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream,
- hinfo);
-}
-
-static int playback_pcm_prepare(struct hda_pcm_stream *hinfo,
- struct hda_codec *codec,
- unsigned int stream_tag,
- unsigned int format,
- struct snd_pcm_substream *substream)
-{
- struct hda_gen_spec *spec = codec->spec;
- return snd_hda_multi_out_analog_prepare(codec, &spec->multiout,
- stream_tag, format, substream);
-}
-
-static int playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
- struct hda_codec *codec,
- struct snd_pcm_substream *substream)
-{
- struct hda_gen_spec *spec = codec->spec;
- return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);
-}
-
static const struct hda_pcm_stream alc269_44k_pcm_analog_playback = {
- .substreams = 1,
- .channels_min = 2,
- .channels_max = 8,
.rates = SNDRV_PCM_RATE_44100, /* fixed rate */
- /* NID is set in alc_build_pcms */
- .ops = {
- .open = playback_pcm_open,
- .prepare = playback_pcm_prepare,
- .cleanup = playback_pcm_cleanup
- },
};

static const struct hda_pcm_stream alc269_44k_pcm_analog_capture = {
- .substreams = 1,
- .channels_min = 2,
- .channels_max = 2,
.rates = SNDRV_PCM_RATE_44100, /* fixed rate */
- /* NID is set in alc_build_pcms */
};

/* different alc269-variants */
--
2.3.3