Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=177a7cdbd1d88be5cbf957a2793a59ffa50cbef9
Commit:     177a7cdbd1d88be5cbf957a2793a59ffa50cbef9
Parent:     eafe57084786d5711e434165297f13864697f9f9
Author:     Clemens Ladisch <[EMAIL PROTECTED]>
AuthorDate: Mon Jul 23 17:38:44 2007 +0200
Committer:  Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Tue Oct 16 15:57:50 2007 +0200

    [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 <[EMAIL PROTECTED]>
    Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
 sound/pci/ymfpci/ymfpci_main.c |   70 ++++++++++++++++++++++++++--------------
 1 files changed, 46 insertions(+), 24 deletions(-)

diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index 7fa57c9..e33e4aa 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;
-
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