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-rw-r--r--src/legacy_output.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/src/legacy_output.c b/src/legacy_output.c
index 7134ee15..9123d589 100644
--- a/src/legacy_output.c
+++ b/src/legacy_output.c
@@ -912,6 +912,11 @@ legacy_output_dpms(xf86OutputPtr output, int mode)
ErrorF("enable LVDS\n");
tmp = INREG(RADEON_LVDS_GEN_CNTL);
tmp |= (RADEON_LVDS_ON | RADEON_LVDS_BLON | RADEON_LVDS_EN);
+#if defined(__powerpc__)
+ /* not sure if this is needed on non-Macs */
+ if (info->MacModel)
+ tmp |= RADEON_LVDS_BL_MOD_EN;
+#endif
tmp &= ~(RADEON_LVDS_DISPLAY_DIS);
usleep (lvds->PanelPwrDly * 1000);
OUTREG(RADEON_LVDS_GEN_CNTL, tmp);
@@ -1001,10 +1006,24 @@ legacy_output_dpms(xf86OutputPtr output, int mode)
*/
OUTPLLP(pScrn, RADEON_PIXCLKS_CNTL, 0, ~RADEON_PIXCLK_LVDS_ALWAYS_ONb);
}
- tmp = INREG(RADEON_LVDS_GEN_CNTL);
- tmp |= RADEON_LVDS_DISPLAY_DIS;
- tmp &= ~(RADEON_LVDS_ON | RADEON_LVDS_BLON | RADEON_LVDS_EN);
- OUTREG(RADEON_LVDS_GEN_CNTL, tmp);
+#if defined(__powerpc__)
+ /* not sure if this is needed on non-Macs */
+ if (info->MacModel) {
+ tmp = INREG(RADEON_LVDS_GEN_CNTL);
+ tmp |= RADEON_LVDS_DISPLAY_DIS;
+ tmp &= ~RADEON_LVDS_BL_MOD_EN;
+ OUTREG(RADEON_LVDS_GEN_CNTL, tmp);
+ usleep(100);
+ tmp &= ~(RADEON_LVDS_ON | RADEON_LVDS_EN);
+ OUTREG(RADEON_LVDS_GEN_CNTL, tmp);
+ } else
+#endif
+ {
+ tmp = INREG(RADEON_LVDS_GEN_CNTL);
+ tmp |= RADEON_LVDS_DISPLAY_DIS;
+ tmp &= ~(RADEON_LVDS_ON | RADEON_LVDS_BLON | RADEON_LVDS_EN);
+ OUTREG(RADEON_LVDS_GEN_CNTL, tmp);
+ }
save->lvds_gen_cntl |= RADEON_LVDS_DISPLAY_DIS;
save->lvds_gen_cntl &= ~(RADEON_LVDS_ON | RADEON_LVDS_BLON | RADEON_LVDS_EN);
if (info->IsMobility || info->IsIGP) {