[alsa-devel] [PATCH 108/112] ALSA: hda - Fix multi-io channel mode management
Takashi Iwai
tiwai at suse.de
Tue Jan 8 12:39:41 CET 2013
The multi-io channels can vary not only from 1 to 6 but also may vary
from 6 to 8 or such. At the same time, there are more speaker pins
available than the primary output pins. So, we need three variables
to check: the minimum channel counts for primary outputs, the current
channel counts for primary outputs, and the minimum channel counts for
all outputs.
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
sound/pci/hda/hda_generic.c | 92 ++++++++++++++++++++++++++++++---------------
sound/pci/hda/hda_generic.h | 16 +++++++-
2 files changed, 76 insertions(+), 32 deletions(-)
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index d13e404..193dd55 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -1125,6 +1125,25 @@ static int check_aamix_out_path(struct hda_codec *codec, int path_idx)
return snd_hda_get_path_idx(codec, path);
}
+/* fill the empty entries in the dac array for speaker/hp with the
+ * shared dac pointed by the paths
+ */
+static void refill_shared_dacs(struct hda_codec *codec, int num_outs,
+ hda_nid_t *dacs, int *path_idx)
+{
+ struct nid_path *path;
+ int i;
+
+ for (i = 0; i < num_outs; i++) {
+ if (dacs[i])
+ continue;
+ path = snd_hda_get_path_from_idx(codec, path_idx[i]);
+ if (!path)
+ continue;
+ dacs[i] = path->path[0];
+ }
+}
+
/* fill in the dac_nids table from the parsed pin configuration */
static int fill_and_eval_dacs(struct hda_codec *codec,
bool fill_hardwired,
@@ -1183,19 +1202,6 @@ static int fill_and_eval_dacs(struct hda_codec *codec,
spec->private_dac_nids, spec->out_paths,
&main_out_badness);
- /* re-count num_dacs and squash invalid entries */
- spec->multiout.num_dacs = 0;
- for (i = 0; i < cfg->line_outs; i++) {
- if (spec->private_dac_nids[i])
- spec->multiout.num_dacs++;
- else {
- memmove(spec->private_dac_nids + i,
- spec->private_dac_nids + i + 1,
- sizeof(hda_nid_t) * (cfg->line_outs - i - 1));
- spec->private_dac_nids[cfg->line_outs - 1] = 0;
- }
- }
-
if (fill_mio_first &&
cfg->line_outs == 1 && cfg->line_out_type != AUTO_PIN_SPEAKER_OUT) {
/* try to fill multi-io first */
@@ -1246,16 +1252,41 @@ static int fill_and_eval_dacs(struct hda_codec *codec,
if (count_multiio_pins(codec, cfg->hp_pins[0]) >= 2)
spec->multi_ios = 1; /* give badness */
+ /* re-count num_dacs and squash invalid entries */
+ spec->multiout.num_dacs = 0;
+ for (i = 0; i < cfg->line_outs; i++) {
+ if (spec->private_dac_nids[i])
+ spec->multiout.num_dacs++;
+ else {
+ memmove(spec->private_dac_nids + i,
+ spec->private_dac_nids + i + 1,
+ sizeof(hda_nid_t) * (cfg->line_outs - i - 1));
+ spec->private_dac_nids[cfg->line_outs - 1] = 0;
+ }
+ }
+
+ spec->ext_channel_count = spec->min_channel_count =
+ spec->multiout.num_dacs;
+
if (spec->multi_ios == 2) {
for (i = 0; i < 2; i++)
spec->private_dac_nids[spec->multiout.num_dacs++] =
spec->multi_io[i].dac;
- spec->ext_channel_count = 2;
} else if (spec->multi_ios) {
spec->multi_ios = 0;
badness += BAD_MULTI_IO;
}
+ /* re-fill the shared DAC for speaker / headphone */
+ if (cfg->line_out_type != AUTO_PIN_HP_OUT)
+ refill_shared_dacs(codec, cfg->hp_outs,
+ spec->multiout.hp_out_nid,
+ spec->hp_paths);
+ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT)
+ refill_shared_dacs(codec, cfg->speaker_outs,
+ spec->multiout.extra_out_nid,
+ spec->speaker_paths);
+
return badness;
}
@@ -1608,14 +1639,15 @@ static int ch_mode_info(struct snd_kcontrol *kcontrol,
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct hda_gen_spec *spec = codec->spec;
+ int chs;
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = spec->multi_ios + 1;
if (uinfo->value.enumerated.item > spec->multi_ios)
uinfo->value.enumerated.item = spec->multi_ios;
- sprintf(uinfo->value.enumerated.name, "%dch",
- (uinfo->value.enumerated.item + 1) * 2);
+ chs = uinfo->value.enumerated.item * 2 + spec->min_channel_count;
+ sprintf(uinfo->value.enumerated.name, "%dch", chs);
return 0;
}
@@ -1624,7 +1656,8 @@ static int ch_mode_get(struct snd_kcontrol *kcontrol,
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct hda_gen_spec *spec = codec->spec;
- ucontrol->value.enumerated.item[0] = (spec->ext_channel_count - 1) / 2;
+ ucontrol->value.enumerated.item[0] =
+ (spec->ext_channel_count - spec->min_channel_count) / 2;
return 0;
}
@@ -1672,9 +1705,9 @@ static int ch_mode_put(struct snd_kcontrol *kcontrol,
ch = ucontrol->value.enumerated.item[0];
if (ch < 0 || ch > spec->multi_ios)
return -EINVAL;
- if (ch == (spec->ext_channel_count - 1) / 2)
+ if (ch == (spec->ext_channel_count - spec->min_channel_count) / 2)
return 0;
- spec->ext_channel_count = (ch + 1) * 2;
+ spec->ext_channel_count = ch * 2 + spec->min_channel_count;
for (i = 0; i < spec->multi_ios; i++)
set_multi_io(codec, i, i < ch);
spec->multiout.max_channels = max(spec->ext_channel_count,
@@ -3125,17 +3158,16 @@ int snd_hda_gen_parse_auto_config(struct hda_codec *codec,
if (err < 0)
return err;
- /* check the multiple speaker pins */
- if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
- spec->const_channel_count = cfg->line_outs * 2;
- else
- spec->const_channel_count = cfg->speaker_outs * 2;
-
- if (spec->multi_ios > 0)
- spec->multiout.max_channels = max(spec->ext_channel_count,
- spec->const_channel_count);
- else
- spec->multiout.max_channels = spec->multiout.num_dacs * 2;
+ spec->const_channel_count = spec->ext_channel_count;
+ /* check the multiple speaker and headphone pins */
+ if (cfg->line_out_type != AUTO_PIN_SPEAKER_OUT)
+ spec->const_channel_count = max(spec->const_channel_count,
+ cfg->speaker_outs * 2);
+ if (cfg->line_out_type != AUTO_PIN_HP_OUT)
+ spec->const_channel_count = max(spec->const_channel_count,
+ cfg->hp_outs * 2);
+ spec->multiout.max_channels = max(spec->ext_channel_count,
+ spec->const_channel_count);
err = check_auto_mute_availability(codec);
if (err < 0)
diff --git a/sound/pci/hda/hda_generic.h b/sound/pci/hda/hda_generic.h
index 00a1eab..b65769c 100644
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -117,8 +117,20 @@ struct hda_gen_spec {
unsigned int cur_mux[3];
/* channel model */
- int const_channel_count; /* min. channel count (for speakers) */
- int ext_channel_count; /* current channel count for multi-io */
+ /* min_channel_count contains the minimum channel count for primary
+ * outputs. When multi_ios is set, the channels can be configured
+ * between min_channel_count and (min_channel_count + multi_ios * 2).
+ *
+ * ext_channel_count contains the current channel count of the primary
+ * out. This varies in the range above.
+ *
+ * Meanwhile, const_channel_count is the channel count for all outputs
+ * including headphone and speakers. It's a constant value, and the
+ * PCM is set up as max(ext_channel_count, const_channel_count).
+ */
+ int min_channel_count; /* min. channel count for primary out */
+ int ext_channel_count; /* current channel count for primary */
+ int const_channel_count; /* channel count for all */
/* PCM information */
struct hda_pcm pcm_rec[3]; /* used in build_pcms() */
--
1.8.0.1
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