drm/i915: fix IVB cursor support

The cursor regs have moved around, add the offsets and new macros for
getting at them.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

2 files changed, 43 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6cad6b1e3355..c7ef323d716e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2573,10 +2573,18 @@
 #define _CURBBASE               0x700c4
 #define _CURBPOS                        0x700c8
 
+#define _CURBCNTR_IVB           0x71080
+#define _CURBBASE_IVB           0x71084
+#define _CURBPOS_IVB            0x71088
+
 #define CURCNTR(pipe) _PIPE(pipe, _CURACNTR, _CURBCNTR)
 #define CURBASE(pipe) _PIPE(pipe, _CURABASE, _CURBBASE)
 #define CURPOS(pipe) _PIPE(pipe, _CURAPOS, _CURBPOS)
 
+#define CURCNTR_IVB(pipe) _PIPE(pipe, _CURACNTR, _CURBCNTR_IVB)
+#define CURBASE_IVB(pipe) _PIPE(pipe, _CURABASE, _CURBBASE_IVB)
+#define CURPOS_IVB(pipe) _PIPE(pipe, _CURAPOS, _CURBPOS_IVB)
+
 /* Display A control */
 #define _DSPACNTR                0x70180
 #define   DISPLAY_PLANE_ENABLE                  (1<<31)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 880d44e38353..2371a8e38047 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5998,6 +5998,31 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
         I915_WRITE(CURBASE(pipe), base);
 }
 
+static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
+{
+        struct drm_device *dev = crtc->dev;
+        struct drm_i915_private *dev_priv = dev->dev_private;
+        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+        int pipe = intel_crtc->pipe;
+        bool visible = base != 0;
+
+        if (intel_crtc->cursor_visible != visible) {
+                uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
+                if (base) {
+                        cntl &= ~CURSOR_MODE;
+                        cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
+                } else {
+                        cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
+                        cntl |= CURSOR_MODE_DISABLE;
+                }
+                I915_WRITE(CURCNTR_IVB(pipe), cntl);
+
+                intel_crtc->cursor_visible = visible;
+        }
+        /* and commit changes on next vblank */
+        I915_WRITE(CURBASE_IVB(pipe), base);
+}
+
 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
                                      bool on)
@@ -6045,11 +6070,16 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
         if (!visible && !intel_crtc->cursor_visible)
                 return;
 
-        I915_WRITE(CURPOS(pipe), pos);
-        if (IS_845G(dev) || IS_I865G(dev))
-                i845_update_cursor(crtc, base);
-        else
-                i9xx_update_cursor(crtc, base);
+        if (IS_IVYBRIDGE(dev)) {
+                I915_WRITE(CURPOS_IVB(pipe), pos);
+                ivb_update_cursor(crtc, base);
+        } else {
+                I915_WRITE(CURPOS(pipe), pos);
+                if (IS_845G(dev) || IS_I865G(dev))
+                        i845_update_cursor(crtc, base);
+                else
+                        i9xx_update_cursor(crtc, base);
+        }
 
         if (visible)
                 intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);