igfx: add support for 915gm

tested on a t43 with igfx and a 1600x1200 t43p screen
what works: lvds, blanking
what doesn't: hwgc (not visible), snarfing edid
untested: vga

based on realemu traces.

diff --git a/sys/src/9/pc/vgaigfx.c b/sys/src/9/pc/vgaigfx.c
index ca31dade659af2a15dabb297c10617525529708f..8702c29ee997587111fd8884f368d19b13043b66 100644 (file)
--- a/sys/src/9/pc/vgaigfx.c
+++ b/sys/src/9/pc/vgaigfx.c
@@ -66,6 +66,7 @@ igfxblank(VGAscr *scr, int blank)
 
        case 0x2a02:    /* GM965 */
        case 0x2a42:    /* GM45 */
+       case 0x2592:    /* GM915 */
                off = 0x61204;
                break;
 
@@ -156,6 +157,7 @@ igfxcurregs(VGAscr* scr, int pipe)
                if(pipe > 2)
                        return nil;
                break;
+       case 0x2592:    /* GM915 */
        case 0x2a42:    /* X200 */
        case 0x29a2:    /* 82P965/G965 HECI desktop */
        case 0x2a02:    /* CF-R7 */

diff --git a/sys/src/cmd/aux/vga/igfx.c b/sys/src/cmd/aux/vga/igfx.c
index 3d7841a3669b9b79f4c2d5383cb7c1b59cbb3e13..c636706b0cea2fb53f3d8b2d3f55102e3143f0a5 100644 (file)
--- a/sys/src/cmd/aux/vga/igfx.c
+++ b/sys/src/cmd/aux/vga/igfx.c
@@ -379,6 +379,7 @@ devtype(Igfx *igfx)
        case 0x29a2:    /* 82P965/G965 HECI desktop */
        case 0x2a02:    /* GM965/GL960/X3100 - ThinkPad X61 Tablet */
        case 0x2a42:    /* 4 Series Mobile - ThinkPad X200 */
+       case 0x2592:    /* 915GM */
                return TypeG45;
        }
        return -1;
@@ -889,7 +890,7 @@ initdpll(Igfx *igfx, int x, int freq, int port)
        dpll->ctrl.v |=  0x010000<<(p1-1);
 
        /* FP1 P1 Post divisor */
-       if(igfx->pci->did != 0x27a2){
+       if(igfx->pci->did != 0x27a2 && igfx->pci->did != 0x2592){
                dpll->ctrl.v &= ~0xFF;
                dpll->ctrl.v |=  0x01<<(p1-1);
                dpll->fp1.v = dpll->fp0.v;