[ALSA] ymfpci: fix volume handling of the 44.1 kHz slot

The existing code for handling the 44.1 slot's volume has two problems:
the volume is not affected by the 'Wave Playback Volume' mixer control,
and the BUF441OUTVOL register, which is used to control the per-
substream volume for this slot, uses a different scale than the gain
fields of the other slots.
This patch makes the BUF441OUTVOL register a shadow of the
NATIVEDACOUTVOL register so that the Wave volume is consistent for all
substreams.
As a consequence of this, the per-substream PCM volume control gets no
longer activated for the substream using this slot.  The code for
(de)activating the mixer control is moved from the open/close to the
prepare/trigger_stop callbacks so that it is able to determine the
substream's slot.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 46 insertions, 24 deletions

diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index 7fa57c9ecc5f..e33e4aa6855c 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -171,17 +171,6 @@ static u32 snd_ymfpci_calc_lpfQ(u32 rate)
         return val[0];
 }
 
-static void snd_ymfpci_pcm_441_volume_set(struct snd_ymfpci_pcm *ypcm)
-{
-        unsigned int value;
-        struct snd_ymfpci_pcm_mixer *mixer;
-        
-        mixer = &ypcm->chip->pcm_mixer[ypcm->substream->number];
-        value = min_t(unsigned int, mixer->left, 0x7fff) >> 1;
-        value |= (min_t(unsigned int, mixer->right, 0x7fff) >> 1) << 16;
-        snd_ymfpci_writel(ypcm->chip, YDSXGR_BUF441OUTVOL, value);
-}
-
 /*
  *  Hardware start management
  */
@@ -389,6 +378,7 @@ static int snd_ymfpci_playback_trigger(struct snd_pcm_substream *substream,
 {
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_ymfpci_pcm *ypcm = substream->runtime->private_data;
+        struct snd_kcontrol *kctl = NULL;
         int result = 0;
 
         spin_lock(&chip->reg_lock);
@@ -406,6 +396,11 @@ static int snd_ymfpci_playback_trigger(struct snd_pcm_substream *substream,
                 ypcm->running = 1;
                 break;
         case SNDRV_PCM_TRIGGER_STOP:
+                if (substream->pcm == chip->pcm && !ypcm->use_441_slot) {
+                        kctl = chip->pcm_mixer[substream->number].ctl;
+                        kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+                }
+                /* fall through */
         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
         case SNDRV_PCM_TRIGGER_SUSPEND:
                 chip->ctrl_playback[ypcm->voices[0]->number + 1] = 0;
@@ -419,6 +414,8 @@ static int snd_ymfpci_playback_trigger(struct snd_pcm_substream *substream,
         }
       __unlock:
         spin_unlock(&chip->reg_lock);
+        if (kctl)
+                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
         return result;
 }
 static int snd_ymfpci_capture_trigger(struct snd_pcm_substream *substream,
@@ -526,7 +523,6 @@ static void snd_ymfpci_pcm_init_voice(struct snd_ymfpci_pcm *ypcm, unsigned int
                 ypcm->chip->src441_used = voice->number;
                 ypcm->use_441_slot = 1;
                 format |= 0x10000000;
-                snd_ymfpci_pcm_441_volume_set(ypcm);
         }
         if (ypcm->chip->src441_used == voice->number &&
             (format & 0x10000000) == 0) {
@@ -667,6 +663,7 @@ static int snd_ymfpci_playback_prepare(struct snd_pcm_substream *substream)
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct snd_ymfpci_pcm *ypcm = runtime->private_data;
+        struct snd_kcontrol *kctl;
         unsigned int nvoice;
 
         ypcm->period_size = runtime->period_size;
@@ -676,6 +673,12 @@ static int snd_ymfpci_playback_prepare(struct snd_pcm_substream *substream)
         for (nvoice = 0; nvoice < runtime->channels; nvoice++)
                 snd_ymfpci_pcm_init_voice(ypcm, nvoice, runtime,
                                           substream->pcm == chip->pcm);
+
+        if (substream->pcm == chip->pcm && !ypcm->use_441_slot) {
+                kctl = chip->pcm_mixer[substream->number].ctl;
+                kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
+        }
         return 0;
 }
 
@@ -926,7 +929,6 @@ static int snd_ymfpci_playback_open(struct snd_pcm_substream *substream)
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct snd_ymfpci_pcm *ypcm;
-        struct snd_kcontrol *kctl;
         int err;
         
         if ((err = snd_ymfpci_playback_open_1(substream)) < 0)
@@ -941,10 +943,6 @@ static int snd_ymfpci_playback_open(struct snd_pcm_substream *substream)
                 chip->rear_opened++;
         }
         spin_unlock_irq(&chip->reg_lock);
-
-        kctl = chip->pcm_mixer[substream->number].ctl;
-        kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
-        snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
         return 0;
 }
 
@@ -1039,7 +1037,6 @@ static int snd_ymfpci_playback_close(struct snd_pcm_substream *substream)
 {
         struct snd_ymfpci *chip = snd_pcm_substream_chip(substream);
         struct snd_ymfpci_pcm *ypcm = substream->runtime->private_data;
-        struct snd_kcontrol *kctl;
 
         spin_lock_irq(&chip->reg_lock);
         if (ypcm->output_rear && chip->rear_opened > 0) {
@@ -1047,9 +1044,6 @@ static int snd_ymfpci_playback_close(struct snd_pcm_substream *substream)
                 ymfpci_close_extension(chip);
         }
         spin_unlock_irq(&chip->reg_lock);
-        kctl = chip->pcm_mixer[substream->number].ctl;
-        kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
-        snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
         return snd_ymfpci_playback_close_1(substream);
 }
 
@@ -1552,6 +1546,26 @@ static int snd_ymfpci_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_e
         return change;
 }
 
+static int snd_ymfpci_put_nativedacvol(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_ymfpci *chip = snd_kcontrol_chip(kcontrol);
+        unsigned int reg = YDSXGR_NATIVEDACOUTVOL;
+        unsigned int reg2 = YDSXGR_BUF441OUTVOL;
+        int change;
+        unsigned int value, oval;
+        
+        value = ucontrol->value.integer.value[0] & 0x3fff;
+        value |= (ucontrol->value.integer.value[1] & 0x3fff) << 16;
+        spin_lock_irq(&chip->reg_lock);
+        oval = snd_ymfpci_readl(chip, reg);
+        change = value != oval;
+        snd_ymfpci_writel(chip, reg, value);
+        snd_ymfpci_writel(chip, reg2, value);
+        spin_unlock_irq(&chip->reg_lock);
+        return change;
+}
+
 /*
  * 4ch duplication
  */
@@ -1576,7 +1590,17 @@ static int snd_ymfpci_put_dup4ch(struct snd_kcontrol *kcontrol, struct snd_ctl_e
 
 
 static struct snd_kcontrol_new snd_ymfpci_controls[] __devinitdata = {
-YMFPCI_DOUBLE("Wave Playback Volume", 0, YDSXGR_NATIVEDACOUTVOL),
+{
+        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name = "Wave Playback Volume",
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
+                  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
+        .info = snd_ymfpci_info_double,
+        .get = snd_ymfpci_get_double,
+        .put = snd_ymfpci_put_nativedacvol,
+        .private_value = YDSXGR_NATIVEDACOUTVOL,
+        .tlv = { .p = db_scale_native },
+},
 YMFPCI_DOUBLE("Wave Capture Volume", 0, YDSXGR_NATIVEDACLOOPVOL),
 YMFPCI_DOUBLE("Digital Capture Volume", 0, YDSXGR_NATIVEDACINVOL),
 YMFPCI_DOUBLE("Digital Capture Volume", 1, YDSXGR_NATIVEADCINVOL),
@@ -1719,8 +1743,6 @@ static int snd_ymfpci_pcm_vol_put(struct snd_kcontrol *kcontrol,
                         struct snd_ymfpci_pcm *ypcm = substream->runtime->private_data;
                         if (!ypcm->use_441_slot)
                                 ypcm->update_pcm_vol = 2;
-                        else
-                                snd_ymfpci_pcm_441_volume_set(ypcm);
                 }
                 spin_unlock_irqrestore(&chip->voice_lock, flags);
                 return 1;