releases/2.6.17.14/video-fix-msp343xg-handling-regression.patch

From stable-bounces@linux.kernel.org Sun Oct  8 12:56:28 2006
Message-ID: <4529476D.3030009@linuxtv.org>
Date: Sun, 08 Oct 2006 14:46:05 -0400
From: Hans Verkuil <hverkuil@xs4all.nl>
To: stable@kernel.org
Cc: Hans Verkuil <hverkuil@xs4all.nl>,
        Linux and Kernel Video <video4linux-list@redhat.com>,
        v4l-dvb maintainer list <v4l-dvb-maintainer@linuxtv.org>
Subject: V4L: Fix msp343xG handling regression

From: Hans Verkuil <hverkuil@xs4all.nl>

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@xs4all.nl>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 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(-)

--- linux-2.6.17.13.orig/drivers/media/video/msp3400-driver.c
+++ linux-2.6.17.13/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) {
--- linux-2.6.17.13.orig/drivers/media/video/msp3400-driver.h
+++ linux-2.6.17.13/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;
--- linux-2.6.17.13.orig/drivers/media/video/msp3400-kthreads.c
+++ linux-2.6.17.13/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");