4 files changed, 45 insertions, 3 deletions

diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 539db129a9f4..aea3f038cff6 100644
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -208,8 +208,11 @@ static void cx25840_initialize(struct i2c_client *client, int loadfw)
 
 static void input_change(struct i2c_client *client)
 {
+        struct cx25840_state *state = i2c_get_clientdata(client);
         v4l2_std_id std = cx25840_get_v4lstd(client);
 
+        /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
+           instead of V4L2_STD_PAL. Someone needs to test this. */
         if (std & V4L2_STD_PAL) {
                 /* Follow tuner change procedure for PAL */
                 cx25840_write(client, 0x808, 0xff);
@@ -220,7 +223,32 @@ static void input_change(struct i2c_client *client)
                 cx25840_write(client, 0x80b, 0x10);
         } else if (std & V4L2_STD_NTSC) {
                 /* NTSC */
-                cx25840_write(client, 0x808, 0xf6);
+                if (state->cardtype == CARDTYPE_PVR150_WORKAROUND) {
+                        /* Certain Hauppauge PVR150 models have a hardware bug
+                           that causes audio to drop out. For these models the
+                           audio standard must be set explicitly.
+                           To be precise: it affects cards with tuner models
+                           85, 99 and 112 (model numbers from tveeprom). */
+                        if (std == V4L2_STD_NTSC_M_JP) {
+                                /* Japan uses EIAJ audio standard */
+                                cx25840_write(client, 0x808, 0x2f);
+                        } else {
+                                /* Others use the BTSC audio standard */
+                                cx25840_write(client, 0x808, 0x1f);
+                        }
+                        /* South Korea uses the A2-M (aka Zweiton M) audio
+                           standard, and should set 0x808 to 0x3f, but I don't
+                           know how to detect this. */
+                } else if (std == V4L2_STD_NTSC_M_JP) {
+                        /* Japan uses EIAJ audio standard */
+                        cx25840_write(client, 0x808, 0xf7);
+                } else {
+                        /* Others use the BTSC audio standard */
+                        cx25840_write(client, 0x808, 0xf6);
+                }
+                /* South Korea uses the A2-M (aka Zweiton M) audio standard,
+                   and should set 0x808 to 0xf8, but I don't know how to
+                   detect this. */
                 cx25840_write(client, 0x80b, 0x00);
         }
 
@@ -241,7 +269,8 @@ static int set_input(struct i2c_client *client, enum cx25840_input input)
         case CX25840_TUNER:
                 cx25840_dbg("now setting Tuner input\n");
 
-                if (state->cardtype == CARDTYPE_PVR150) {
+                if (state->cardtype == CARDTYPE_PVR150 ||
+                    state->cardtype == CARDTYPE_PVR150_WORKAROUND) {
                         /* CH_SEL_ADC2=1 */
                         cx25840_and_or(client, 0x102, ~0x2, 0x02);
                 }
@@ -363,6 +392,7 @@ static int set_v4lctrl(struct i2c_client *client, struct v4l2_control *ctrl)
         case CX25840_CID_CARDTYPE:
                 switch (ctrl->value) {
                 case CARDTYPE_PVR150:
+                case CARDTYPE_PVR150_WORKAROUND:
                 case CARDTYPE_PG600:
                         state->cardtype = ctrl->value;
                         break;
diff --git a/drivers/media/video/cx25840/cx25840.h b/drivers/media/video/cx25840/cx25840.h
index 5c3f0639fb77..4932ed1c9b19 100644
--- a/drivers/media/video/cx25840/cx25840.h
+++ b/drivers/media/video/cx25840/cx25840.h
@@ -40,9 +40,16 @@ extern int cx25840_debug;
 
 #define CX25840_CID_CARDTYPE (V4L2_CID_PRIVATE_BASE+0)
 
+/* The CARDTYPE_PVR150_WORKAROUND cardtype activates a workaround for a
+   hardware bug that is present in PVR150 (and possible PVR500) cards that
+   have certain NTSC tuners (tveeprom model numbers 85, 99 and 112). The
+   audio autodetect fails on some channels for these models and the workaround
+   is to select the audio standard explicitly. Many thanks to Hauppauge for
+   providing this information. */
 enum cx25840_cardtype {
         CARDTYPE_PVR150,
-        CARDTYPE_PG600
+        CARDTYPE_PG600,
+        CARDTYPE_PVR150_WORKAROUND,
 };
 
 enum cx25840_input {
diff --git a/drivers/media/video/tveeprom.c b/drivers/media/video/tveeprom.c
index f048fd44f0e2..3a986c2a0f72 100644
--- a/drivers/media/video/tveeprom.c
+++ b/drivers/media/video/tveeprom.c
@@ -339,6 +339,7 @@ static int hasRadioTuner(int tunerType)
                 case 78: //PNPEnv_TUNER_TDA8275C1_8290_FM:
                 case 89: //PNPEnv_TUNER_TCL_MFPE05_2:
                 case 92: //PNPEnv_TUNER_PHILIPS_FQ1236A_MK4:
+                case 105:
                 return 1;
         }
         return 0;
@@ -596,6 +597,8 @@ void tveeprom_hauppauge_analog(struct i2c_client *c, struct tveeprom *tvee,
                 t_name2 = "unknown";
         }
 
+        tvee->tuner_hauppauge_model = tuner1;
+        tvee->tuner2_hauppauge_model = tuner2;
         tvee->tuner_formats = 0;
         tvee->tuner2_formats = 0;
         for (i = j = 0; i < 8; i++) {
diff --git a/include/media/tveeprom.h b/include/media/tveeprom.h
index 97930081699f..e9fc1a785497 100644
--- a/include/media/tveeprom.h
+++ b/include/media/tveeprom.h
@@ -8,9 +8,11 @@ struct tveeprom {
 
         u32 tuner_type;
         u32 tuner_formats;
+        u32 tuner_hauppauge_model;
 
         u32 tuner2_type;
         u32 tuner2_formats;
+        u32 tuner2_hauppauge_model;
 
         u32 digitizer;
         u32 digitizer_formats;