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path: root/drivers/video/via/via_modesetting.c
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Diffstat (limited to 'drivers/video/via/via_modesetting.c')
-rw-r--r--drivers/video/via/via_modesetting.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/video/via/via_modesetting.c b/drivers/video/via/via_modesetting.c
index 3cddcff..0e431ae 100644
--- a/drivers/video/via/via_modesetting.c
+++ b/drivers/video/via/via_modesetting.c
@@ -29,6 +29,110 @@
#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);
+
+ /* reset timing control */
+ via_write_reg_mask(VIACR, 0x17, 0x00, 0x80);
+ via_write_reg_mask(VIACR, 0x17, 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);

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