em28xx: enable Compro VideoMate ForYou sound

From: Vitaly Wool <vital@embeddedalley.com>

Compro VideoMate uses an external audio DSP chip, controlled via tvaudio
module (tda9874a). This patch improves em28xx infrastructure to support
an external audio processor and fixes the Compro VideoMate entry to work
with it.

Signed-off-by: Vitaly Wool <vital@embeddedalley.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 39 insertions, 1 deletions

diff --git a/linux/drivers/media/video/em28xx/em28xx-cards.c b/linux/drivers/media/video/em28xx/em28xx-cards.c
index 74f35b6d6..fcb8131e6 100644
--- a/linux/drivers/media/video/em28xx/em28xx-cards.c
+++ b/linux/drivers/media/video/em28xx/em28xx-cards.c
@@ -135,6 +135,22 @@ static struct em28xx_reg_seq default_tuner_gpio[] = {
 	{  -1,			-1,		-1,		-1},
 };
 
+/* Mute/unmute */
+static struct em28xx_reg_seq compro_unmute_tv_gpio[] = {
+	{EM28XX_R08_GPIO,	5,		7,		10},
+	{  -1,			-1,		-1,		-1},
+};
+
+static struct em28xx_reg_seq compro_unmute_svid_gpio[] = {
+	{EM28XX_R08_GPIO,	4,		7,		10},
+	{  -1,			-1,		-1,		-1},
+};
+
+static struct em28xx_reg_seq compro_mute_gpio[] = {
+	{EM28XX_R08_GPIO,	6,		7,		10},
+	{  -1,			-1,		-1,		-1},
+};
+
 /*
  *  Board definitions
  */
@@ -1290,14 +1306,17 @@ struct em28xx_board em28xx_boards[] = {
 		.tda9887_conf = TDA9887_PRESENT,
 		.decoder      = EM28XX_TVP5150,
 		.adecoder     = EM28XX_TVAUDIO,
+		.mute_gpio    = compro_mute_gpio,
 		.input        = { {
 			.type     = EM28XX_VMUX_TELEVISION,
 			.vmux     = TVP5150_COMPOSITE0,
-			.amux     = EM28XX_AMUX_LINE_IN,
+			.amux     = EM28XX_AMUX_VIDEO,
+			.gpio     = compro_unmute_tv_gpio,
 		}, {
 			.type     = EM28XX_VMUX_SVIDEO,
 			.vmux     = TVP5150_SVIDEO,
 			.amux     = EM28XX_AMUX_LINE_IN,
+			.gpio     = compro_unmute_svid_gpio,
 		} },
 	},
 	[EM2860_BOARD_KAIOMY_TVNPC_U2] = {
diff --git a/linux/drivers/media/video/em28xx/em28xx-core.c b/linux/drivers/media/video/em28xx/em28xx-core.c
index f10abc5b4..0d4c9fcc2 100644
--- a/linux/drivers/media/video/em28xx/em28xx-core.c
+++ b/linux/drivers/media/video/em28xx/em28xx-core.c
@@ -378,6 +378,11 @@ static int em28xx_set_audio_source(struct em28xx *dev)
 		}
 	}
 
+	if (dev->board.mute_gpio && dev->mute)
+		em28xx_gpio_set(dev, dev->board.mute_gpio);
+	else
+		em28xx_gpio_set(dev, INPUT(dev->ctl_input)->gpio);
+
 	ret = em28xx_write_reg_bits(dev, EM28XX_R0E_AUDIOSRC, input, 0xc0);
 	if (ret < 0)
 		return ret;
diff --git a/linux/drivers/media/video/em28xx/em28xx-i2c.c b/linux/drivers/media/video/em28xx/em28xx-i2c.c
index 1bdcf2500..e9abb2769 100644
--- a/linux/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/linux/drivers/media/video/em28xx/em28xx-i2c.c
@@ -510,12 +510,17 @@ static int attach_inform(struct i2c_client *client)
 		dprintk1(1, "attach_inform: tvp5150 detected.\n");
 		break;
 
+	case 0xb0:
+		dprintk1(1, "attach_inform: tda9874 detected\n");
+		break;
+
 	default:
 		if (!dev->tuner_addr)
 			dev->tuner_addr = client->addr;
 
 		dprintk1(1, "attach inform: detected I2C address %x\n",
 				client->addr << 1);
+		dprintk1(1, "driver id %d\n", client->driver->id);
 
 	}
 
@@ -557,6 +562,7 @@ static char *i2c_devs[128] = {
 	[0x80 >> 1] = "msp34xx",
 	[0x88 >> 1] = "msp34xx",
 	[0xa0 >> 1] = "eeprom",
+	[0xb0 >> 1] = "tda9874",
 	[0xb8 >> 1] = "tvp5150a",
 	[0xba >> 1] = "tvp5150a",
 	[0xc0 >> 1] = "tuner (analog)",
diff --git a/linux/drivers/media/video/em28xx/em28xx-video.c b/linux/drivers/media/video/em28xx/em28xx-video.c
index 448a02b04..ef02999ec 100644
--- a/linux/drivers/media/video/em28xx/em28xx-video.c
+++ b/linux/drivers/media/video/em28xx/em28xx-video.c
@@ -544,6 +544,13 @@ static void video_mux(struct em28xx *dev, int index)
 			&route);
 	}
 
+	if (dev->board.adecoder != EM28XX_NOADECODER) {
+		route.input = dev->ctl_ainput;
+		route.output = dev->ctl_aoutput;
+		em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING,
+			&route);
+	}
+
 	em28xx_audio_analog_set(dev);
 }
 
diff --git a/linux/drivers/media/video/em28xx/em28xx.h b/linux/drivers/media/video/em28xx/em28xx.h
index 43c537e66..c9be33aba 100644
--- a/linux/drivers/media/video/em28xx/em28xx.h
+++ b/linux/drivers/media/video/em28xx/em28xx.h
@@ -375,6 +375,7 @@ struct em28xx_board {
 	struct em28xx_reg_seq *dvb_gpio;
 	struct em28xx_reg_seq *suspend_gpio;
 	struct em28xx_reg_seq *tuner_gpio;
+	struct em28xx_reg_seq *mute_gpio;
 
 	unsigned int is_em2800:1;
 	unsigned int has_msp34xx:1;