drm/i915: Save/restore cursor state on suspend/resume.

This may fix cursor corruption in X on resume, which would persist until
the cursor was hidden and then shown again.

V2: Also include the cursor control regs.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index c431fa5..fcaa544 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -285,6 +285,13 @@ typedef struct drm_i915_private {
        u8 saveDACMASK;
        u8 saveCR[37];
        uint64_t saveFENCE[16];
+       u32 saveCURACNTR;
+       u32 saveCURAPOS;
+       u32 saveCURABASE;
+       u32 saveCURBCNTR;
+       u32 saveCURBPOS;
+       u32 saveCURBBASE;
+       u32 saveCURSIZE;
 
        struct {
                struct drm_mm gtt_space;
@@ -642,6 +649,7 @@ void i915_gem_detach_phys_object(struct drm_device *dev,
 void i915_gem_free_all_phys_object(struct drm_device *dev);
 int i915_gem_object_get_pages(struct drm_gem_object *obj);
 void i915_gem_object_put_pages(struct drm_gem_object *obj);
+void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv);
 
 /* i915_gem_tiling.c */
 void i915_gem_detect_bit_6_swizzle(struct drm_device *dev);

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index ce8a213..a98e283 100644 (file)
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -295,6 +295,16 @@ int i915_save_state(struct drm_device *dev)
        i915_save_palette(dev, PIPE_B);
        dev_priv->savePIPEBSTAT = I915_READ(PIPEBSTAT);
 
+       /* Cursor state */
+       dev_priv->saveCURACNTR = I915_READ(CURACNTR);
+       dev_priv->saveCURAPOS = I915_READ(CURAPOS);
+       dev_priv->saveCURABASE = I915_READ(CURABASE);
+       dev_priv->saveCURBCNTR = I915_READ(CURBCNTR);
+       dev_priv->saveCURBPOS = I915_READ(CURBPOS);
+       dev_priv->saveCURBBASE = I915_READ(CURBBASE);
+       if (!IS_I9XX(dev))
+               dev_priv->saveCURSIZE = I915_READ(CURSIZE);
+
        /* CRT state */
        dev_priv->saveADPA = I915_READ(ADPA);
 
@@ -480,6 +490,16 @@ int i915_restore_state(struct drm_device *dev)
        I915_WRITE(DSPBCNTR, dev_priv->saveDSPBCNTR);
        I915_WRITE(DSPBADDR, I915_READ(DSPBADDR));
 
+       /* Cursor state */
+       I915_WRITE(CURAPOS, dev_priv->saveCURAPOS);
+       I915_WRITE(CURACNTR, dev_priv->saveCURACNTR);
+       I915_WRITE(CURABASE, dev_priv->saveCURABASE);
+       I915_WRITE(CURBPOS, dev_priv->saveCURBPOS);
+       I915_WRITE(CURBCNTR, dev_priv->saveCURBCNTR);
+       I915_WRITE(CURBBASE, dev_priv->saveCURBBASE);
+       if (!IS_I9XX(dev))
+               I915_WRITE(CURSIZE, dev_priv->saveCURSIZE);
+
        /* CRT state */
        I915_WRITE(ADPA, dev_priv->saveADPA);