drm/gma500/mrst: Replace WMs and chickenbits with values from EMGD

For the minnowboard to work the values found in EMGD are required.
This might break Oaktrail but without hardware to test with I cannot
really tell (and do not really care).

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>

1 files changed, 6 insertions, 7 deletions

diff --git a/drivers/gpu/drm/gma500/oaktrail_crtc.c b/drivers/gpu/drm/gma500/oaktrail_crtc.c
index 25bf206b46f2..8195e8592107 100644
--- a/drivers/gpu/drm/gma500/oaktrail_crtc.c
+++ b/drivers/gpu/drm/gma500/oaktrail_crtc.c
@@ -332,16 +332,15 @@ static void oaktrail_crtc_dpms(struct drm_crtc *crtc, int mode)
                 break;
         }
 
-        /*Set FIFO Watermarks*/
-        REG_WRITE(DSPARB, 0x3FFF);
-        REG_WRITE(DSPFW1, 0x3F88080A);
-        REG_WRITE(DSPFW2, 0x0b060808);
+        /* Set FIFO Watermarks (values taken from EMGD) */
+        REG_WRITE(DSPARB, 0x3f80);
+        REG_WRITE(DSPFW1, 0x3f8f0404);
+        REG_WRITE(DSPFW2, 0x04040f04);
         REG_WRITE(DSPFW3, 0x0);
-        REG_WRITE(DSPFW4, 0x08030404);
+        REG_WRITE(DSPFW4, 0x04040404);
         REG_WRITE(DSPFW5, 0x04040404);
         REG_WRITE(DSPFW6, 0x78);
-        REG_WRITE(0x70400, REG_READ(0x70400) | 0x4000);
-        /* Must write Bit 14 of the Chicken Bit Register */
+        REG_WRITE(DSPCHICKENBIT, REG_READ(DSPCHICKENBIT) | 0xc040);
 
         gma_power_end(dev);
 }