From 15f8eeb2a86b969d82bfca5d54f1fb30c35cf243 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Wed, 28 Jan 2009 21:32:59 -0300 Subject: [PATCH] V4L/DVB (10564): bttv: fix external mux for PHYTEC VD-009 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. These phytec boards used this feature to control an external video mux and I guess no one noticed when they removed the code. So add a muxsel_hook for these boards that does the necessary gpio setting. BTW, I doubt the needs_tvaudio setting for these cards is correct. Cc: Dirk Heer Signed-off-by: Trent Piepho Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/bt8xx/bttv-cards.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/media/video/bt8xx/bttv-cards.c b/drivers/media/video/bt8xx/bttv-cards.c index d055c2770469..2832bafa3695 100644 --- a/drivers/media/video/bt8xx/bttv-cards.c +++ b/drivers/media/video/bt8xx/bttv-cards.c @@ -73,6 +73,8 @@ static void sigmaSQ_muxsel(struct bttv *btv, unsigned int input); static void geovision_muxsel(struct bttv *btv, unsigned int input); +static void phytec_muxsel(struct bttv *btv, unsigned int input); + static int terratec_active_radio_upgrade(struct bttv *btv); static int tea5757_read(struct bttv *btv); static int tea5757_write(struct bttv *btv, int value); @@ -2054,10 +2056,9 @@ struct tvcard bttv_tvcards[] = { /* .audio_inputs= 0, */ .svhs = 9, .gpiomask = 0x00, - .gpiomask2 = 0x03, /* gpiomask2 defines the bits used to switch audio - via the upper nibble of muxsel. here: used for - xternal video-mux */ - .muxsel = { 0x02, 0x12, 0x22, 0x32, 0x03, 0x13, 0x23, 0x33, 0x01, 0x00 }, + .gpiomask2 = 0x03, /* used for external vodeo mux */ + .muxsel = { 2, 2, 2, 2, 3, 3, 3, 3, 1, 0 }, + .muxsel_hook = phytec_muxsel, .gpiomux = { 0, 0, 0, 0 }, /* card has no audio */ .needs_tvaudio = 1, .pll = PLL_28, @@ -2070,10 +2071,9 @@ struct tvcard bttv_tvcards[] = { /* .audio_inputs= 0, */ .svhs = 9, .gpiomask = 0x00, - .gpiomask2 = 0x03, /* gpiomask2 defines the bits used to switch audio - via the upper nibble of muxsel. here: used for - xternal video-mux */ - .muxsel = { 0x02, 0x12, 0x22, 0x32, 0x03, 0x13, 0x23, 0x33, 0x01, 0x01 }, + .gpiomask2 = 0x03, /* used for external vodeo mux */ + .muxsel = { 2, 2, 2, 2, 3, 3, 3, 3, 1, 1 }, + .muxsel_hook = phytec_muxsel, .gpiomux = { 0, 0, 0, 0 }, /* card has no audio */ .needs_tvaudio = 1, .pll = PLL_28, @@ -4528,6 +4528,16 @@ static void PXC200_muxsel(struct bttv *btv, unsigned int input) printk(KERN_DEBUG "bttv%d: setting input channel to:%d\n", btv->c.nr,(int)mux); } +static void phytec_muxsel(struct bttv *btv, unsigned int input) +{ + unsigned int mux = input % 4; + + if (input == btv->svhs) + mux = 0; + + gpio_bits(0x3, mux); +} + /* ----------------------------------------------------------------------- */ /* motherboard chipset specific stuff */ -- 2.20.1