From 13afaefc0392d377d23ce5b7e1f4f3944a00e1f1 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Wed, 28 Jan 2009 21:32:59 -0300 Subject: [PATCH] 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 Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/bt8xx/bttv-cards.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c index 2832baf..df4d775 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); -- 2.7.4