We always translate the dma address such that the offsets of
the source image are zero. Hence we can remove manipulation of
the MXR_GRAPHIC_SXY(win) register.
We leave the register defines (in regs_mixer.h) in place, since
they document the hardware.
Signed-off-by: Tobias Jakobi <tjak...@math.uni-bielefeld.de>
---
drivers/gpu/drm/exynos/exynos_mixer.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c
b/drivers/gpu/drm/exynos/exynos_mixer.c
index 32970fb..b712f2a 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -585,7 +585,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
unsigned long flags;
unsigned int win = plane->index;
unsigned int x_ratio = 0, y_ratio = 0;
- unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
+ unsigned int dst_x_offset, dst_y_offset;
dma_addr_t dma_addr;
unsigned int fmt;
u32 val;
@@ -619,12 +619,10 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
dst_x_offset = state->crtc.x;
dst_y_offset = state->crtc.y;
- /* converting dma address base and source offset */
+ /* translate dma address base s.t. the source image offset is zero */
dma_addr = exynos_drm_fb_dma_addr(fb, 0)
+ (state->src.x * fb->format->cpp[0])
+ (state->src.y * fb->pitches[0]);
- src_x_offset = 0;
- src_y_offset = 0;
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
__set_bit(MXR_BIT_INTERLACE, &ctx->flags);
@@ -655,11 +653,6 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
val |= MXR_GRP_WH_V_SCALE(y_ratio);
mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
- /* setup offsets in source image */
- val = MXR_GRP_SXY_SX(src_x_offset);
- val |= MXR_GRP_SXY_SY(src_y_offset);
- mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
-
/* setup offsets in display image */
val = MXR_GRP_DXY_DX(dst_x_offset);
val |= MXR_GRP_DXY_DY(dst_y_offset);
--
2.7.3
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