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authorTrent Piepho <xyzzy@speakeasy.org>2009-01-28 21:32:59 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:42:47 -0300
commit13afaefc0392d377d23ce5b7e1f4f3944a00e1f1 (patch)
treef5d333810d3620844d60786916f12fd20c077fba /drivers/media/video
parent15f8eeb2a86b969d82bfca5d54f1fb30c35cf243 (diff)
V4L/DVB (10565): bttv: fix external mux for RemoteVision MX
Old versions of the bttv driver would use the high nibble of an input's muxsel value to program the GPIO lines enabled via gpiomask2. Apparently this was supposed to be for switching external audio muxes. Anyway, the code that did this was removed sometime in the pre-git 2.6 series. The RemoteVision MX board used this feature to control an external video mux and I guess no one noticed when they removed the code. Move the extra gpio mux data out of the high nibble of muxsel and to rv605_muxsel(), then have that function set the gpio lines with it. From looking at the CD22M3494E datasheet, it seems like the mdelay(1) is a much longer delay than necessary. It looks like only around 20 ns is necessary. Cc: Miguel Freitas <miguel@cetuc.puc-rio.br> Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/bt8xx/bttv-cards.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c
index 2832bafa3695..df4d7752eb77 100644
--- a/drivers/media/video/bt8xx/bttv-cards.c
+++ b/drivers/media/video/bt8xx/bttv-cards.c
@@ -1516,8 +1516,7 @@ struct tvcard bttv_tvcards[] = {
.svhs = NO_SVHS,
.gpiomask = 0x00,
.gpiomask2 = 0x07ff,
- .muxsel = { 0x33, 0x13, 0x23, 0x43, 0xf3, 0x73, 0xe3, 0x03,
- 0xd3, 0xb3, 0xc3, 0x63, 0x93, 0x53, 0x83, 0xa3 },
+ .muxsel = { 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 },
.no_msp34xx = 1,
.no_tda9875 = 1,
.tuner_type = TUNER_ABSENT,
@@ -4178,6 +4177,11 @@ void tea5757_set_freq(struct bttv *btv, unsigned short freq)
*/
static void rv605_muxsel(struct bttv *btv, unsigned int input)
{
+ static const u8 muxgpio[] = { 0x3, 0x1, 0x2, 0x4, 0xf, 0x7, 0xe, 0x0,
+ 0xd, 0xb, 0xc, 0x6, 0x9, 0x5, 0x8, 0xa };
+
+ gpio_bits(0x07f, muxgpio[input]);
+
/* reset all conections */
gpio_bits(0x200,0x200);
mdelay(1);
@@ -4185,7 +4189,6 @@ static void rv605_muxsel(struct bttv *btv, unsigned int input)
mdelay(1);
/* create a new connection */
- gpio_bits(0x480,0x080);
gpio_bits(0x480,0x480);
mdelay(1);
gpio_bits(0x480,0x080);