drm/i915: Adjust CRC capture for pre-gen5/vlv

Should work down to gen2. The #defines for the interrupt sources are
already there in PIPESTAT and are the same on all gmch platforms for
gen2 up to vlv.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_irq.c

@@ -1249,21 +1249,31 @@ static void ivb_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
 				I915_READ(PIPE_CRC_RES_5_IVB(pipe)));
 }
 
-static void ilk_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
+static void i9xx_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
+	uint32_t res1, res2;
+
+	if (INTEL_INFO(dev)->gen >= 3)
+		res1 = I915_READ(PIPE_CRC_RES_RES1_I915(pipe));
+	else
+		res1 = 0;
+
+	if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
+		res2 = I915_READ(PIPE_CRC_RES_RES2_G4X(pipe));
+	else
+		res2 = 0;
 
 	display_pipe_crc_update(dev, pipe,
-				I915_READ(PIPE_CRC_RES_RED_ILK(pipe)),
-				I915_READ(PIPE_CRC_RES_GREEN_ILK(pipe)),
-				I915_READ(PIPE_CRC_RES_BLUE_ILK(pipe)),
-				I915_READ(PIPE_CRC_RES_RES1_ILK(pipe)),
-				I915_READ(PIPE_CRC_RES_RES2_ILK(pipe)));
+				I915_READ(PIPE_CRC_RES_RED(pipe)),
+				I915_READ(PIPE_CRC_RES_GREEN(pipe)),
+				I915_READ(PIPE_CRC_RES_BLUE(pipe)),
+				res1, res2);
 }
 #else
 static inline void hsw_pipe_crc_update(struct drm_device *dev, int pipe) {}
 static inline void ivb_pipe_crc_update(struct drm_device *dev, int pipe) {}
-static inline void ilk_pipe_crc_update(struct drm_device *dev, int pipe) {}
+static inline void i9xx_pipe_crc_update(struct drm_device *dev, int pipe) {}
 #endif
 
 /* The RPS events need forcewake, so we add them to a work queue and mask their
@@ -1543,10 +1553,10 @@ static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir)
 			DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
 
 	if (de_iir & DE_PIPEA_CRC_DONE)
-		ilk_pipe_crc_update(dev, PIPE_A);
+		i9xx_pipe_crc_update(dev, PIPE_A);
 
 	if (de_iir & DE_PIPEB_CRC_DONE)
-		ilk_pipe_crc_update(dev, PIPE_B);
+		i9xx_pipe_crc_update(dev, PIPE_B);
 
 	if (de_iir & DE_PLANEA_FLIP_DONE) {
 		intel_prepare_page_flip(dev, 0);

drivers/gpu/drm/i915/i915_reg.h

@@ -1858,11 +1858,11 @@
 #define _PIPE_CRC_RES_4_A_IVB		0x60070
 #define _PIPE_CRC_RES_5_A_IVB		0x60074
 
-#define _PIPE_CRC_RES_RED_A_ILK		0x60060
-#define _PIPE_CRC_RES_GREEN_A_ILK	0x60064
-#define _PIPE_CRC_RES_BLUE_A_ILK	0x60068
-#define _PIPE_CRC_RES_RES1_A_ILK	0x6006c
-#define _PIPE_CRC_RES_RES2_A_ILK	0x60080
+#define _PIPE_CRC_RES_RED_A		(dev_priv->info->display_mmio_offset + 0x60060)
+#define _PIPE_CRC_RES_GREEN_A		(dev_priv->info->display_mmio_offset + 0x60064)
+#define _PIPE_CRC_RES_BLUE_A		(dev_priv->info->display_mmio_offset + 0x60068)
+#define _PIPE_CRC_RES_RES1_A_I915	(dev_priv->info->display_mmio_offset + 0x6006c)
+#define _PIPE_CRC_RES_RES2_A_G4X	(dev_priv->info->display_mmio_offset + 0x60080)
 
 /* Pipe B CRC regs */
 #define _PIPE_CRC_CTL_B			0x61050
@@ -1884,16 +1884,16 @@
 #define PIPE_CRC_RES_5_IVB(pipe)	\
 	_PIPE(pipe, _PIPE_CRC_RES_5_A_IVB, _PIPE_CRC_RES_5_B_IVB)
 
-#define PIPE_CRC_RES_RED_ILK(pipe) \
-	_PIPE_INC(pipe, _PIPE_CRC_RES_RED_A_ILK, 0x01000)
-#define PIPE_CRC_RES_GREEN_ILK(pipe) \
-	_PIPE_INC(pipe, _PIPE_CRC_RES_GREEN_A_ILK, 0x01000)
-#define PIPE_CRC_RES_BLUE_ILK(pipe) \
-	_PIPE_INC(pipe, _PIPE_CRC_RES_BLUE_A_ILK, 0x01000)
-#define PIPE_CRC_RES_RES1_ILK(pipe) \
-	_PIPE_INC(pipe, _PIPE_CRC_RES_RES1_A_ILK, 0x01000)
-#define PIPE_CRC_RES_RES2_ILK(pipe) \
-	_PIPE_INC(pipe, _PIPE_CRC_RES_RES2_A_ILK, 0x01000)
+#define PIPE_CRC_RES_RED(pipe) \
+	_PIPE_INC(pipe, _PIPE_CRC_RES_RED_A, 0x01000)
+#define PIPE_CRC_RES_GREEN(pipe) \
+	_PIPE_INC(pipe, _PIPE_CRC_RES_GREEN_A, 0x01000)
+#define PIPE_CRC_RES_BLUE(pipe) \
+	_PIPE_INC(pipe, _PIPE_CRC_RES_BLUE_A, 0x01000)
+#define PIPE_CRC_RES_RES1_I915(pipe) \
+	_PIPE_INC(pipe, _PIPE_CRC_RES_RES1_A_I915, 0x01000)
+#define PIPE_CRC_RES_RES2_G4X(pipe) \
+	_PIPE_INC(pipe, _PIPE_CRC_RES_RES2_A_G4X, 0x01000)
 
 /* Pipe A timing regs */
 #define _HTOTAL_A	(dev_priv->info->display_mmio_offset + 0x60000)