From: Hans Verkuil <hverkuil@xs4all.nl>
Date: Sun, 8 Oct 2006 18:41:42 +0000 (-0400)
Subject: V4L: Fix msp343xG handling regression
X-Git-Tag: v2.6.18.1~65
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c998b8df9876512097947fb3cbe3bb4397a05819;p=thirdparty%2Fkernel%2Fstable.git

V4L: Fix msp343xG handling regression

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.

The workaround for kernel 2.6.18 is to use 'standard=32' as msp3400 module
option.

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>
---

diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 56246b8578f32..cf43df3fe708c 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -904,6 +904,8 @@ static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
 	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 545e4ac094f2e..7531efa1615e7 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 ed02ff8113886..4c7f85b566a0a 100644
--- a/drivers/media/video/msp3400-kthreads.c
+++ b/drivers/media/video/msp3400-kthreads.c
@@ -960,9 +960,10 @@ int msp34xxg_thread(void *data)
 
 		/* setup the chip*/
 		msp34xxg_reset(client);
-		state->std = state->radio ? 0x40 : msp_standard;
-		/* start autodetect */
+		state->std = state->radio ? 0x40 :
+			(state->force_btsc && msp_standard == 1) ? 32 : msp_standard;
 		msp_write_dem(client, 0x20, state->std);
+		/* start autodetect */
 		if (state->std != 1)
 			goto unmute;