drm/radeon/cik: add hw cursor support (v2)

CIK (DCE8) hw cursors are programmed the same as evergreen
(DCE4) with the following caveats:
- cursors are now 128x128 pixels
- new alpha blend enable bit

v2: rebase

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
index b097d5b4ff39..9630e8d95fb4 100644
--- a/drivers/gpu/drm/radeon/radeon_cursor.c
+++ b/drivers/gpu/drm/radeon/radeon_cursor.c
@@ -27,9 +27,6 @@
 #include <drm/radeon_drm.h>
 #include "radeon.h"
 
-#define CURSOR_WIDTH 64
-#define CURSOR_HEIGHT 64
-
 static void radeon_lock_cursor(struct drm_crtc *crtc, bool lock)
 {
 	struct radeon_device *rdev = crtc->dev->dev_private;
@@ -167,7 +164,8 @@ int radeon_crtc_cursor_set(struct drm_crtc *crtc,
 		goto unpin;
 	}
 
-	if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
+	if ((width > radeon_crtc->max_cursor_width) ||
+	    (height > radeon_crtc->max_cursor_height)) {
 		DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 		return -EINVAL;
 	}
@@ -233,11 +231,11 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 	DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 
 	if (x < 0) {
-		xorigin = min(-x, CURSOR_WIDTH - 1);
+		xorigin = min(-x, radeon_crtc->max_cursor_width - 1);
 		x = 0;
 	}
 	if (y < 0) {
-		yorigin = min(-y, CURSOR_HEIGHT - 1);
+		yorigin = min(-y, radeon_crtc->max_cursor_height - 1);
 		y = 0;
 	}