ALSA: hdspm - Also check for TCO sync states

This patch prepares snd_hdspm_get_sync_check() to also check the TCO
sync state. The added feature will be exposed to the user in a later
commit.

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

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 82f209f..8b7c9fb 100644 (file)
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -3447,6 +3447,16 @@ static int snd_hdspm_put_playback_mixer(struct snd_kcontrol *kcontrol,
        .get = snd_hdspm_get_sync_check \
 }
 
+#define HDSPM_TCO_LOCK_CHECK(xname, xindex) \
+{      .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
+       .name = xname, \
+       .private_value = xindex, \
+       .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+       .info = snd_hdspm_tco_info_lock_check, \
+       .get = snd_hdspm_get_sync_check \
+}
+
+
 
 static int snd_hdspm_info_sync_check(struct snd_kcontrol *kcontrol,
                                     struct snd_ctl_elem_info *uinfo)
@@ -3456,6 +3466,14 @@ static int snd_hdspm_info_sync_check(struct snd_kcontrol *kcontrol,
        return 0;
 }
 
+static int snd_hdspm_tco_info_lock_check(struct snd_kcontrol *kcontrol,
+                                    struct snd_ctl_elem_info *uinfo)
+{
+       static char *texts[] = { "No Lock", "Lock" };
+       ENUMERATED_CTL_INFO(uinfo, texts);
+       return 0;
+}
+
 static int hdspm_wc_sync_check(struct hdspm *hdspm)
 {
        int status, status2;
@@ -3585,6 +3603,14 @@ static int hdspm_aes_sync_check(struct hdspm *hdspm, int idx)
        return 0;
 }
 
+static int hdspm_tco_input_check(struct hdspm *hdspm, u32 mask)
+{
+       u32 status;
+       status = hdspm_read(hdspm, HDSPM_RD_TCO + 4);
+
+       return (status & mask) ? 1 : 0;
+}
+
 
 static int hdspm_tco_sync_check(struct hdspm *hdspm)
 {
@@ -3692,6 +3718,22 @@ static int snd_hdspm_get_sync_check(struct snd_kcontrol *kcontrol,
 
        }
 
+       if (hdspm->tco) {
+               switch (kcontrol->private_value) {
+               case 11:
+                       /* Check TCO for lock state of its current input */
+                       val = hdspm_tco_input_check(hdspm, HDSPM_TCO1_TCO_lock);
+                       break;
+               case 12:
+                       /* Check TCO for valid time code on LTC input. */
+                       val = hdspm_tco_input_check(hdspm,
+                               HDSPM_TCO1_LTC_Input_valid);
+                       break;
+               default:
+                       break;
+               }
+       }
+
        if (-1 == val)
                val = 3;