ALSA: Define more channel map positions

[firefly-linux-kernel-4.4.55.git] / Documentation / sound / alsa / Channel-Mapping-API.txt

diff --git a/Documentation/sound/alsa/Channel-Mapping-API.txt b/Documentation/sound/alsa/Channel-Mapping-API.txt
index 4bbf12d5553fef59b0870654a4d77fd82ca5e368..3c43d1a4ca0ea88e91ac62b86d942fadf69888a6 100644 (file)
--- a/Documentation/sound/alsa/Channel-Mapping-API.txt
+++ b/Documentation/sound/alsa/Channel-Mapping-API.txt
@@ -76,8 +76,10 @@ here is a cut:
 
 /* channel positions */
 enum {
-       /* this follows the alsa-lib mixer channel value + 1 */
        SNDRV_CHMAP_UNKNOWN = 0,
+       SNDRV_CHMAP_NA,         /* N/A, silent */
+       SNDRV_CHMAP_MONO,       /* mono stream */
+       /* this follows the alsa-lib mixer channel value + 3 */
        SNDRV_CHMAP_FL,         /* front left */
        SNDRV_CHMAP_FR,         /* front right */
        SNDRV_CHMAP_RL,         /* rear left */
@@ -98,8 +100,13 @@ enum {
        SNDRV_CHMAP_FCH,        /* front center high */
        SNDRV_CHMAP_FRH,        /* front right high */
        SNDRV_CHMAP_TC,         /* top center */
-       SNDRV_CHMAP_NA,         /* N/A, silent */
-       SNDRV_CHMAP_LAST = SNDRV_CHMAP_NA,
+       SNDRV_CHMAP_TFL,        /* top front left */
+       SNDRV_CHMAP_TFR,        /* top front right */
+       SNDRV_CHMAP_TFC,        /* top front center */
+       SNDRV_CHMAP_TRL,        /* top rear left */
+       SNDRV_CHMAP_TRR,        /* top rear right */
+       SNDRV_CHMAP_TRC,        /* top rear center */
+       SNDRV_CHMAP_LAST = SNDRV_CHMAP_TRC,
 };
 
 When a PCM stream can provide more than one channel map, you can