[ALSA] HDA codec & CA0106 - add/fix TLV support

Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 33 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 23201f3eeb12..78ff4575699d 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -29,6 +29,7 @@
 #include <sound/core.h>
 #include "hda_codec.h"
 #include <sound/asoundef.h>
+#include <sound/tlv.h>
 #include <sound/initval.h>
 #include "hda_local.h"
 
@@ -841,6 +842,38 @@ int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_e
         return change;
 }
 
+int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
+                          unsigned int size, unsigned int __user *_tlv)
+{
+        struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+        hda_nid_t nid = get_amp_nid(kcontrol);
+        int dir = get_amp_direction(kcontrol);
+        u32 caps, val1, val2;
+
+        if (size < 4 * sizeof(unsigned int))
+                return -ENOMEM;
+        caps = query_amp_caps(codec, nid, dir);
+        val2 = (((caps & AC_AMPCAP_STEP_SIZE) >> AC_AMPCAP_STEP_SIZE_SHIFT) + 1) * 25;
+        val1 = -((caps & AC_AMPCAP_OFFSET) >> AC_AMPCAP_OFFSET_SHIFT);
+        val1 = ((int)val1) * ((int)val2);
+        if (caps & AC_AMPCAP_MUTE)
+                val2 |= 0x10000;
+        if ((val2 & 0x10000) == 0 && dir == HDA_OUTPUT) {
+                caps = query_amp_caps(codec, nid, HDA_INPUT);
+                if (caps & AC_AMPCAP_MUTE)
+                        val2 |= 0x10000;
+        }
+        if (put_user(SNDRV_CTL_TLVT_DB_SCALE, _tlv))
+                return -EFAULT;
+        if (put_user(2 * sizeof(unsigned int), _tlv + 1))
+                return -EFAULT;
+        if (put_user(val1, _tlv + 2))
+                return -EFAULT;
+        if (put_user(val2, _tlv + 3))
+                return -EFAULT;
+        return 0;
+}
+
 /* switch */
 int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 {