ALSA: hdspm - Provide MADI speed mode selector on RME MADI and MADIface
Adrian Knoth [Fri, 29 Jul 2011 01:11:02 +0000 (03:11 +0200)]
When running in slave mode (no clock master), there is no way to
determine the real wirespeed on the MADI link (single/double/quad
speed). Like physical gear, simply provide the user with a tristate
switch to select the appropriate format.

Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/rme9652/hdspm.c

index af130ee..d219649 100644 (file)
@@ -3415,6 +3415,91 @@ static int snd_hdspm_put_qs_wire(struct snd_kcontrol *kcontrol,
        return change;
 }
 
+#define HDSPM_MADI_SPEEDMODE(xname, xindex) \
+{      .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+       .name = xname, \
+       .index = xindex, \
+       .info = snd_hdspm_info_madi_speedmode, \
+       .get = snd_hdspm_get_madi_speedmode, \
+       .put = snd_hdspm_put_madi_speedmode \
+}
+
+static int hdspm_madi_speedmode(struct hdspm *hdspm)
+{
+       if (hdspm->control_register & HDSPM_QuadSpeed)
+               return 2;
+       if (hdspm->control_register & HDSPM_DoubleSpeed)
+               return 1;
+       return 0;
+}
+
+static int hdspm_set_madi_speedmode(struct hdspm *hdspm, int mode)
+{
+       hdspm->control_register &= ~(HDSPM_DoubleSpeed | HDSPM_QuadSpeed);
+       switch (mode) {
+       case 0:
+               break;
+       case 1:
+               hdspm->control_register |= HDSPM_DoubleSpeed;
+               break;
+       case 2:
+               hdspm->control_register |= HDSPM_QuadSpeed;
+               break;
+       }
+       hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);
+
+       return 0;
+}
+
+static int snd_hdspm_info_madi_speedmode(struct snd_kcontrol *kcontrol,
+                                      struct snd_ctl_elem_info *uinfo)
+{
+       static char *texts[] = { "Single", "Double", "Quad" };
+
+       uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+       uinfo->count = 1;
+       uinfo->value.enumerated.items = 3;
+
+       if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+               uinfo->value.enumerated.item =
+                   uinfo->value.enumerated.items - 1;
+       strcpy(uinfo->value.enumerated.name,
+              texts[uinfo->value.enumerated.item]);
+
+       return 0;
+}
+
+static int snd_hdspm_get_madi_speedmode(struct snd_kcontrol *kcontrol,
+                                     struct snd_ctl_elem_value *ucontrol)
+{
+       struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);
+
+       spin_lock_irq(&hdspm->lock);
+       ucontrol->value.enumerated.item[0] = hdspm_madi_speedmode(hdspm);
+       spin_unlock_irq(&hdspm->lock);
+       return 0;
+}
+
+static int snd_hdspm_put_madi_speedmode(struct snd_kcontrol *kcontrol,
+                                     struct snd_ctl_elem_value *ucontrol)
+{
+       struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);
+       int change;
+       int val;
+
+       if (!snd_hdspm_use_is_exclusive(hdspm))
+               return -EBUSY;
+       val = ucontrol->value.integer.value[0];
+       if (val < 0)
+               val = 0;
+       if (val > 2)
+               val = 2;
+       spin_lock_irq(&hdspm->lock);
+       change = val != hdspm_madi_speedmode(hdspm);
+       hdspm_set_madi_speedmode(hdspm, val);
+       spin_unlock_irq(&hdspm->lock);
+       return change;
+}
 
 #define HDSPM_MIXER(xname, xindex) \
 { .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
@@ -4289,7 +4374,8 @@ static struct snd_kcontrol_new snd_hdspm_controls_madi[] = {
        HDSPM_TX_64("TX 64 channels mode", 0),
        HDSPM_C_TMS("Clear Track Marker", 0),
        HDSPM_SAFE_MODE("Safe Mode", 0),
-       HDSPM_INPUT_SELECT("Input Select", 0)
+       HDSPM_INPUT_SELECT("Input Select", 0),
+       HDSPM_MADI_SPEEDMODE("MADI Speed Mode", 0)
 };
 
 
@@ -4302,7 +4388,8 @@ static struct snd_kcontrol_new snd_hdspm_controls_madiface[] = {
        HDSPM_SYNC_CHECK("MADI SyncCheck", 0),
        HDSPM_TX_64("TX 64 channels mode", 0),
        HDSPM_C_TMS("Clear Track Marker", 0),
-       HDSPM_SAFE_MODE("Safe Mode", 0)
+       HDSPM_SAFE_MODE("Safe Mode", 0),
+       HDSPM_MADI_SPEEDMODE("MADI Speed Mode", 0)
 };
 
 static struct snd_kcontrol_new snd_hdspm_controls_aio[] = {