ASoC: AD1980 codec: add multi-channel function support

We added multi-channel function to this codec driver and Blackfin ASoC driver as well.
It was tested on Blackfin hardware.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 15 insertions, 4 deletions

diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index 1397b8e06c0b..410fed953c54 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -85,6 +85,9 @@ SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
 SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
 SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
 
+SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
+SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
+
 SOC_ENUM("Capture Source", ad1980_cap_src),
 
 SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
@@ -145,7 +148,7 @@ struct snd_soc_dai ad1980_dai = {
         .playback = {
                 .stream_name = "Playback",
                 .channels_min = 2,
-                .channels_max = 2,
+                .channels_max = 6,
                 .rates = SNDRV_PCM_RATE_48000,
                 .formats = SNDRV_PCM_FMTBIT_S16_LE, },
         .capture = {
@@ -192,6 +195,7 @@ static int ad1980_soc_probe(struct platform_device *pdev)
         struct snd_soc_codec *codec;
         int ret = 0;
         u16 vendor_id2;
+        u16 ext_status;
 
         printk(KERN_INFO "AD1980 SoC Audio Codec\n");
 
@@ -253,9 +257,16 @@ static int ad1980_soc_probe(struct platform_device *pdev)
                                 "supported\n");
         }
 
-        ac97_write(codec, AC97_MASTER, 0x0000); /* unmute line out volume */
-        ac97_write(codec, AC97_PCM, 0x0000);    /* unmute PCM out volume */
-        ac97_write(codec, AC97_REC_GAIN, 0x0000);/* unmute record volume */
+        /* unmute captures and playbacks volume */
+        ac97_write(codec, AC97_MASTER, 0x0000);
+        ac97_write(codec, AC97_PCM, 0x0000);
+        ac97_write(codec, AC97_REC_GAIN, 0x0000);
+        ac97_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
+        ac97_write(codec, AC97_SURROUND_MASTER, 0x0000);
+
+        /*power on LFE/CENTER/Surround DACs*/
+        ext_status = ac97_read(codec, AC97_EXTENDED_STATUS);
+        ac97_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
 
         ad1980_add_controls(codec);
         ret = snd_soc_register_card(socdev);