drm/i915: Don't restore palettes through VGA registers.

The VGA registers just hit the pipe registers that we already set through
MMIO.  This fixes strange colors on resume.

Signed-off-by: Pierre Willenbrock <pierre@pirsoft.de>
Signed-off-by: Eric Anholt <eric@anholt.net>

2 files changed, 0 insertions, 12 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9186d43be011..d6cc9861e0a1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -279,7 +279,6 @@ typedef struct drm_i915_private {
         u8 saveAR_INDEX;
         u8 saveAR[21];
         u8 saveDACMASK;
-        u8 saveDACDATA[256*3]; /* 256 3-byte colors */
         u8 saveCR[37];
 
         struct {
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 5d84027ee8f3..d669cc2b42c0 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -119,11 +119,6 @@ static void i915_save_vga(struct drm_device *dev)
 
         /* VGA color palette registers */
         dev_priv->saveDACMASK = I915_READ8(VGA_DACMASK);
-        /* DACCRX automatically increments during read */
-        I915_WRITE8(VGA_DACRX, 0);
-        /* Read 3 bytes of color data from each index */
-        for (i = 0; i < 256 * 3; i++)
-                dev_priv->saveDACDATA[i] = I915_READ8(VGA_DACDATA);
 
         /* MSR bits */
         dev_priv->saveMSR = I915_READ8(VGA_MSR_READ);
@@ -225,12 +220,6 @@ static void i915_restore_vga(struct drm_device *dev)
 
         /* VGA color palette registers */
         I915_WRITE8(VGA_DACMASK, dev_priv->saveDACMASK);
-        /* DACCRX automatically increments during read */
-        I915_WRITE8(VGA_DACWX, 0);
-        /* Read 3 bytes of color data from each index */
-        for (i = 0; i < 256 * 3; i++)
-                I915_WRITE8(VGA_DACDATA, dev_priv->saveDACDATA[i]);
-
 }
 
 int i915_save_state(struct drm_device *dev)