drm/radeon/kms: restore surface registers on resume.

On resume on my rv530 laptop surface cntl was left disabled, so
wierd stuff would happen with rendering to a tiled front buffer.

This checks if the surface regs are assigned to bos and reprograms
the surface registers on resume using the same path that clears
them all on init.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r100.c

@@ -3299,6 +3299,8 @@ int r100_resume(struct radeon_device *rdev)
 	radeon_combios_asic_init(rdev->ddev);
 	/* Resume clock after posting */
 	r100_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return r100_startup(rdev);
 }
 

drivers/gpu/drm/radeon/r300.c

@@ -1250,6 +1250,8 @@ int r300_resume(struct radeon_device *rdev)
 	radeon_combios_asic_init(rdev->ddev);
 	/* Resume clock after posting */
 	r300_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return r300_startup(rdev);
 }
 

drivers/gpu/drm/radeon/r420.c

@@ -231,7 +231,8 @@ int r420_resume(struct radeon_device *rdev)
 	}
 	/* Resume clock after posting */
 	r420_clock_resume(rdev);
-
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return r420_startup(rdev);
 }
 

drivers/gpu/drm/radeon/r520.c

@@ -220,6 +220,8 @@ int r520_resume(struct radeon_device *rdev)
 	atom_asic_init(rdev->mode_info.atom_context);
 	/* Resume clock after posting */
 	rv515_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return r520_startup(rdev);
 }
 

drivers/gpu/drm/radeon/radeon_device.c

@@ -44,10 +44,11 @@ void radeon_surface_init(struct radeon_device *rdev)
 	if (rdev->family < CHIP_R600) {
 		int i;
 
-		for (i = 0; i < 8; i++) {
-			WREG32(RADEON_SURFACE0_INFO +
-			       i * (RADEON_SURFACE1_INFO - RADEON_SURFACE0_INFO),
-			       0);
+		for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
+			if (rdev->surface_regs[i].bo)
+				radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
+			else
+				radeon_clear_surface_reg(rdev, i);
 		}
 		/* enable surfaces */
 		WREG32(RADEON_SURFACE_CNTL, 0);

drivers/gpu/drm/radeon/radeon_object.c

@@ -378,7 +378,7 @@ int radeon_bo_fbdev_mmap(struct radeon_bo *bo,
 	return ttm_fbdev_mmap(vma, &bo->tbo);
 }
 
-static int radeon_bo_get_surface_reg(struct radeon_bo *bo)
+int radeon_bo_get_surface_reg(struct radeon_bo *bo)
 {
 	struct radeon_device *rdev = bo->rdev;
 	struct radeon_surface_reg *reg;

drivers/gpu/drm/radeon/radeon_object.h

@@ -175,5 +175,5 @@ extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
 					struct ttm_mem_reg *mem);
 extern void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
-
+extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
 #endif

drivers/gpu/drm/radeon/rs400.c

@@ -430,6 +430,8 @@ int rs400_resume(struct radeon_device *rdev)
 	radeon_combios_asic_init(rdev->ddev);
 	/* Resume clock after posting */
 	r300_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return rs400_startup(rdev);
 }
 

drivers/gpu/drm/radeon/rs600.c

@@ -586,6 +586,8 @@ int rs600_resume(struct radeon_device *rdev)
 	atom_asic_init(rdev->mode_info.atom_context);
 	/* Resume clock after posting */
 	rv515_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return rs600_startup(rdev);
 }
 

drivers/gpu/drm/radeon/rs690.c

@@ -658,6 +658,8 @@ int rs690_resume(struct radeon_device *rdev)
 	atom_asic_init(rdev->mode_info.atom_context);
 	/* Resume clock after posting */
 	rv515_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return rs690_startup(rdev);
 }
 

drivers/gpu/drm/radeon/rv515.c

@@ -513,6 +513,8 @@ int rv515_resume(struct radeon_device *rdev)
 	atom_asic_init(rdev->mode_info.atom_context);
 	/* Resume clock after posting */
 	rv515_clock_startup(rdev);
+	/* Initialize surface registers */
+	radeon_surface_init(rdev);
 	return rv515_startup(rdev);
 }