From d60defb7b2c05b5c4b187171c09b714b0a00efe9 Mon Sep 17 00:00:00 2001 From: Florian Tobias Schandinat Date: Sat, 21 May 2011 22:46:31 +0000 Subject: viafb: use more compact modesetting functions This patch replaces the old timing setup code with a redesigned one. The new code might be slightly faster as it has no conditinals and does not write the same register multiple times. Also it makes the comparison to the documentation easier. Regressions are unlikely but could happen as a lot of hardware is undocumented. Signed-off-by: Florian Tobias Schandinat --- drivers/video/via/via_modesetting.c | 100 ++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) (limited to 'drivers/video/via/via_modesetting.c') diff --git a/drivers/video/via/via_modesetting.c b/drivers/video/via/via_modesetting.c index 3cddcff88ab9..016d457b6681 100644 --- a/drivers/video/via/via_modesetting.c +++ b/drivers/video/via/via_modesetting.c @@ -29,6 +29,106 @@ #include "share.h" #include "debug.h" + +void via_set_primary_timing(const struct display_timing *timing) +{ + struct display_timing raw; + + raw.hor_total = timing->hor_total / 8 - 5; + raw.hor_addr = timing->hor_addr / 8 - 1; + raw.hor_blank_start = timing->hor_blank_start / 8 - 1; + raw.hor_blank_end = timing->hor_blank_end / 8 - 1; + raw.hor_sync_start = timing->hor_sync_start / 8; + raw.hor_sync_end = timing->hor_sync_end / 8; + raw.ver_total = timing->ver_total - 2; + raw.ver_addr = timing->ver_addr - 1; + raw.ver_blank_start = timing->ver_blank_start - 1; + raw.ver_blank_end = timing->ver_blank_end - 1; + raw.ver_sync_start = timing->ver_sync_start - 1; + raw.ver_sync_end = timing->ver_sync_end - 1; + + /* unlock timing registers */ + via_write_reg_mask(VIACR, 0x11, 0x00, 0x80); + + via_write_reg(VIACR, 0x00, raw.hor_total & 0xFF); + via_write_reg(VIACR, 0x01, raw.hor_addr & 0xFF); + via_write_reg(VIACR, 0x02, raw.hor_blank_start & 0xFF); + via_write_reg_mask(VIACR, 0x03, raw.hor_blank_end & 0x1F, 0x1F); + via_write_reg(VIACR, 0x04, raw.hor_sync_start & 0xFF); + via_write_reg_mask(VIACR, 0x05, (raw.hor_sync_end & 0x1F) + | (raw.hor_blank_end << (7 - 5) & 0x80), 0x9F); + via_write_reg(VIACR, 0x06, raw.ver_total & 0xFF); + via_write_reg_mask(VIACR, 0x07, (raw.ver_total >> 8 & 0x01) + | (raw.ver_addr >> (8 - 1) & 0x02) + | (raw.ver_sync_start >> (8 - 2) & 0x04) + | (raw.ver_blank_start >> (8 - 3) & 0x08) + | (raw.ver_total >> (9 - 5) & 0x20) + | (raw.ver_addr >> (9 - 6) & 0x40) + | (raw.ver_sync_start >> (9 - 7) & 0x80), 0xEF); + via_write_reg_mask(VIACR, 0x09, raw.ver_blank_start >> (9 - 5) & 0x20, + 0x20); + via_write_reg(VIACR, 0x10, raw.ver_sync_start & 0xFF); + via_write_reg_mask(VIACR, 0x11, raw.ver_sync_end & 0x0F, 0x0F); + via_write_reg(VIACR, 0x12, raw.ver_addr & 0xFF); + via_write_reg(VIACR, 0x15, raw.ver_blank_start & 0xFF); + via_write_reg(VIACR, 0x16, raw.ver_blank_end & 0xFF); + via_write_reg_mask(VIACR, 0x33, (raw.hor_sync_start >> (8 - 4) & 0x10) + | (raw.hor_blank_end >> (6 - 5) & 0x20), 0x30); + via_write_reg_mask(VIACR, 0x35, (raw.ver_total >> 10 & 0x01) + | (raw.ver_sync_start >> (10 - 1) & 0x02) + | (raw.ver_addr >> (10 - 2) & 0x04) + | (raw.ver_blank_start >> (10 - 3) & 0x08), 0x0F); + via_write_reg_mask(VIACR, 0x36, raw.hor_total >> (8 - 3) & 0x08, 0x08); + + /* lock timing registers */ + via_write_reg_mask(VIACR, 0x11, 0x80, 0x80); +} + +void via_set_secondary_timing(const struct display_timing *timing) +{ + struct display_timing raw; + + raw.hor_total = timing->hor_total - 1; + raw.hor_addr = timing->hor_addr - 1; + raw.hor_blank_start = timing->hor_blank_start - 1; + raw.hor_blank_end = timing->hor_blank_end - 1; + raw.hor_sync_start = timing->hor_sync_start - 1; + raw.hor_sync_end = timing->hor_sync_end - 1; + raw.ver_total = timing->ver_total - 1; + raw.ver_addr = timing->ver_addr - 1; + raw.ver_blank_start = timing->ver_blank_start - 1; + raw.ver_blank_end = timing->ver_blank_end - 1; + raw.ver_sync_start = timing->ver_sync_start - 1; + raw.ver_sync_end = timing->ver_sync_end - 1; + + via_write_reg(VIACR, 0x50, raw.hor_total & 0xFF); + via_write_reg(VIACR, 0x51, raw.hor_addr & 0xFF); + via_write_reg(VIACR, 0x52, raw.hor_blank_start & 0xFF); + via_write_reg(VIACR, 0x53, raw.hor_blank_end & 0xFF); + via_write_reg(VIACR, 0x54, (raw.hor_blank_start >> 8 & 0x07) + | (raw.hor_blank_end >> (8 - 3) & 0x38) + | (raw.hor_sync_start >> (8 - 6) & 0xC0)); + via_write_reg_mask(VIACR, 0x55, (raw.hor_total >> 8 & 0x0F) + | (raw.hor_addr >> (8 - 4) & 0x70), 0x7F); + via_write_reg(VIACR, 0x56, raw.hor_sync_start & 0xFF); + via_write_reg(VIACR, 0x57, raw.hor_sync_end & 0xFF); + via_write_reg(VIACR, 0x58, raw.ver_total & 0xFF); + via_write_reg(VIACR, 0x59, raw.ver_addr & 0xFF); + via_write_reg(VIACR, 0x5A, raw.ver_blank_start & 0xFF); + via_write_reg(VIACR, 0x5B, raw.ver_blank_end & 0xFF); + via_write_reg(VIACR, 0x5C, (raw.ver_blank_start >> 8 & 0x07) + | (raw.ver_blank_end >> (8 - 3) & 0x38) + | (raw.hor_sync_end >> (8 - 6) & 0x40) + | (raw.hor_sync_start >> (10 - 7) & 0x80)); + via_write_reg(VIACR, 0x5D, (raw.ver_total >> 8 & 0x07) + | (raw.ver_addr >> (8 - 3) & 0x38) + | (raw.hor_blank_end >> (11 - 6) & 0x40) + | (raw.hor_sync_start >> (11 - 7) & 0x80)); + via_write_reg(VIACR, 0x5E, raw.ver_sync_start & 0xFF); + via_write_reg(VIACR, 0x5F, (raw.ver_sync_end & 0x1F) + | (raw.ver_sync_start >> (8 - 5) & 0xE0)); +} + void via_set_primary_address(u32 addr) { DEBUG_MSG(KERN_DEBUG "via_set_primary_address(0x%08X)\n", addr); -- cgit v1.2.2