ALSA: hda: move open coded tricks into get_wcaps_channels()

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 12 insertions, 5 deletions

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index fa57cb93b443..5f1dcc59002b 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -410,6 +410,16 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
 /* get the widget type from widget capability bits */
 #define get_wcaps_type(wcaps) (((wcaps) & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT)
 
+static inline unsigned int get_wcaps_channels(u32 wcaps)
+{
+        unsigned int chans;
+
+        chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
+        chans = ((chans << 1) | 1) + 1;
+
+        return chans;
+}
+
 u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
 int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
                               unsigned int caps);
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index a721eb08a290..95f24e4729f8 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -515,9 +515,7 @@ static void print_codec_info(struct snd_info_entry *entry,
                 snd_iprintf(buffer, "Node 0x%02x [%s] wcaps 0x%x:", nid,
                             get_wid_type_name(wid_type), wid_caps);
                 if (wid_caps & AC_WCAP_STEREO) {
-                        unsigned int chans;
-                        chans = (wid_caps & AC_WCAP_CHAN_CNT_EXT) >> 13;
-                        chans = ((chans << 1) | 1) + 1;
+                        unsigned int chans = get_wcaps_channels(wid_caps);
                         if (chans == 2)
                                 snd_iprintf(buffer, " Stereo");
                         else
diff --git a/sound/pci/hda/patch_atihdmi.c b/sound/pci/hda/patch_atihdmi.c
index 233e4778bba9..fb684f00156b 100644
--- a/sound/pci/hda/patch_atihdmi.c
+++ b/sound/pci/hda/patch_atihdmi.c
@@ -141,8 +141,7 @@ static int atihdmi_build_pcms(struct hda_codec *codec)
         /* FIXME: we must check ELD and change the PCM parameters dynamically
          */
         chans = get_wcaps(codec, CVT_NID);
-        chans = (chans & AC_WCAP_CHAN_CNT_EXT) >> 13;
-        chans = ((chans << 1) | 1) + 1;
+        chans = get_wcaps_channels(chans);
         info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
 
         return 0;