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[v2,6/7] drm/mediatek: plane: Use FB's format's cpp to compute x offset

Message ID 1470279597-60453-7-git-send-email-bibby.hsieh@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bibby Hsieh Aug. 4, 2016, 2:59 a.m. UTC 
From: Daniel Kurtz <djkurtz@chromium.org>

Use the framebuffer's format to compute its cpp, and use it when
calculating the address shift value.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_plane.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index b3ddb20..c461a23 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -135,7 +135,7 @@  static void mtk_plane_atomic_update(struct drm_plane *plane,
 	pitch = fb->pitches[0];
 	format = fb->pixel_format;
 
-	addr += (plane->state->src.x1 >> 16) * 4;
+	addr += (plane->state->src.x1 >> 16) * drm_format_plane_cpp(format, 0);
 	addr += (plane->state->src.y1 >> 16) * pitch;
 
 	state->pending.enable = true;