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V4L/DVB (7158): Fix em28xx audio initialization 

AC97 register initialization seem to always be needed. This patch fixes audio
for Prolink/Pixelview USB2 board.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2008-02-05 22:29:26 -03:00
parent 1685a6fed2
commit 7463dda2ae
2 changed files with 6 additions and 11 deletions
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6
drivers/media/video/em28xx/em28xx-cards.c
View File

@ -393,15 +393,15 @@ struct em28xx_board em28xx_boards[] = {
.input = { {
.type = EM28XX_VMUX_TELEVISION,
.vmux = SAA7115_COMPOSITE2,
.amux = 1,
.amux = EM28XX_AMUX_LINE_IN,
}, {
.type = EM28XX_VMUX_COMPOSITE1,
.vmux = SAA7115_COMPOSITE0,
.amux = 1,
.amux = EM28XX_AMUX_LINE_IN,
}, {
.type = EM28XX_VMUX_SVIDEO,
.vmux = SAA7115_SVIDEO3,
.amux = 1,
.amux = EM28XX_AMUX_LINE_IN,
} },
},
};

11
drivers/media/video/em28xx/em28xx-core.c
View File

@ -274,7 +274,6 @@ int em28xx_set_audio_source(struct em28xx *dev)
static char *disable = "\x08\x88";
char *video = enable, *line = disable;
int ret;
int no_ac97 = 0;
u8 input;
if (dev->is_em2800) {
@ -294,11 +293,9 @@ int em28xx_set_audio_source(struct em28xx *dev)
switch (dev->ctl_ainput) {
case EM28XX_AMUX_VIDEO:
input = EM28XX_AUDIO_SRC_TUNER;
no_ac97 = 1;
break;
case EM28XX_AMUX_LINE_IN:
input = EM28XX_AUDIO_SRC_LINE;
no_ac97 = 1;
break;
case EM28XX_AMUX_AC97_VIDEO:
input = EM28XX_AUDIO_SRC_LINE;
@ -315,11 +312,9 @@ int em28xx_set_audio_source(struct em28xx *dev)
if (ret < 0)
return ret;
if (no_ac97)
return 0;
/* Sets AC97 mixer registers */
/* Sets AC97 mixer registers
This is seems to be needed, even for non-ac97 configs
*/
ret = em28xx_write_ac97(dev, VIDEO_AC97, video);
if (ret < 0)
return ret;