[PATCH] Fix msp343xG handling regression

[Hans Verkuil]

The msp3430G and msp3435G models cannot do Automatic Standard Detection,
so these should be forced to BTSC. These chips are early production
versions for the msp34xxG series and are quite rare.

Due to broken handling of the 'standard' option in 2.6.17, there is
no workaround possible.

Signed-off-by: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Michael Krufky <mkrufky@xxxxxxxxxxx>
---
 drivers/media/video/msp3400-driver.c   |    2 ++
 drivers/media/video/msp3400-driver.h   |    1 +
 drivers/media/video/msp3400-kthreads.c |    7 ++++---
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index b806999..dd23219 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -942,6 +942,8 @@ static int msp_attach(struct i2c_adapter
 	state->has_virtual_dolby_surround = msp_revision == 'G' && msp_prod_lo == 1;
 	/* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
 	state->has_dolby_pro_logic = msp_revision == 'G' && msp_prod_lo == 2;
+	/* The msp343xG supports BTSC only and cannot do Automatic Standard Detection. */
+	state->force_btsc = msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
 
 	state->opmode = opmode;
 	if (state->opmode == OPMODE_AUTO) {
diff --git a/drivers/media/video/msp3400-driver.h b/drivers/media/video/msp3400-driver.h
index 4e45104..6359d74 100644
--- a/drivers/media/video/msp3400-driver.h
+++ b/drivers/media/video/msp3400-driver.h
@@ -64,6 +64,7 @@ struct msp_state {
 	u8 has_sound_processing;
 	u8 has_virtual_dolby_surround;
 	u8 has_dolby_pro_logic;
+	u8 force_btsc;
 
 	int radio;
 	int opmode;
diff --git a/drivers/media/video/msp3400-kthreads.c b/drivers/media/video/msp3400-kthreads.c
index 633a102..a0ac592 100644
--- a/drivers/media/video/msp3400-kthreads.c
+++ b/drivers/media/video/msp3400-kthreads.c
@@ -949,11 +949,12 @@ int msp34xxg_thread(void *data)
 
 		/* setup the chip*/
 		msp34xxg_reset(client);
-		state->std = state->radio ? 0x40 : msp_standard;
-		if (state->std != 1)
-			goto unmute;
+		state->std = state->radio ? 0x40 :
+			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
 		/* start autodetect */
 		msp_write_dem(client, 0x20, state->std);
+		if (state->std != 1)
+			goto unmute;
 
 		/* watch autodetect */
 		v4l_dbg(1, msp_debug, client, "started autodetect, waiting for result\n");
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/