ALSA: virtuoso: add S/PDIF input support for all Xonars

All Xonar cards support S/PDIF input, but the cards without optical or
coaxial plugs have only undocumented pin connectors.  Support for the
ST/STX was already added in a previous patch; this adds support for the
D1/DX (JP2), DG (J5), DS (J5), and HDAV Slim (J12).

Many thanks to Zoltan Miklos for testing the DS and DX.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/oxygen/xonar_cs43xx.c

@@ -418,6 +418,7 @@ static const struct oxygen_model model_xonar_d1 = {
 	.device_config = PLAYBACK_0_TO_I2S |
 			 PLAYBACK_1_TO_SPDIF |
 			 CAPTURE_0_FROM_I2S_2 |
+			 CAPTURE_1_FROM_SPDIF |
 			 AC97_FMIC_SWITCH,
 	.dac_channels_pcm = 8,
 	.dac_channels_mixer = 8,

sound/pci/oxygen/xonar_dg.c

@@ -597,7 +597,8 @@ struct oxygen_model model_xonar_dg = {
 	.model_data_size = sizeof(struct dg),
 	.device_config = PLAYBACK_0_TO_I2S |
 			 PLAYBACK_1_TO_SPDIF |
-			 CAPTURE_0_FROM_I2S_2,
+			 CAPTURE_0_FROM_I2S_2 |
+			 CAPTURE_1_FROM_SPDIF,
 	.dac_channels_pcm = 6,
 	.dac_channels_mixer = 0,
 	.function_flags = OXYGEN_FUNCTION_SPI,

sound/pci/oxygen/xonar_wm87x6.c

@@ -1274,7 +1274,8 @@ static const struct oxygen_model model_xonar_ds = {
 	.model_data_size = sizeof(struct xonar_wm87x6),
 	.device_config = PLAYBACK_0_TO_I2S |
 			 PLAYBACK_1_TO_SPDIF |
-			 CAPTURE_0_FROM_I2S_1,
+			 CAPTURE_0_FROM_I2S_1 |
+			 CAPTURE_1_FROM_SPDIF,
 	.dac_channels_pcm = 8,
 	.dac_channels_mixer = 8,
 	.dac_volume_min = 255 - 2*60,
@@ -1306,7 +1307,8 @@ static const struct oxygen_model model_xonar_hdav_slim = {
 	.model_data_size = sizeof(struct xonar_wm87x6),
 	.device_config = PLAYBACK_0_TO_I2S |
 			 PLAYBACK_1_TO_SPDIF |
-			 CAPTURE_0_FROM_I2S_1,
+			 CAPTURE_0_FROM_I2S_1 |
+			 CAPTURE_1_FROM_SPDIF,
 	.dac_channels_pcm = 8,
 	.dac_channels_mixer = 2,
 	.dac_volume_min = 255 - 2*60,