Inki Dae wrote: > > > 2017년 08월 09일 20:48에 Tobias Jakobi 이(가) 쓴 글: >> 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 <tjakobi@xxxxxxxxxxxxxxxxxxxxx> >> --- >> 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 8d68de85bada..28fbe79befff 100644 >> --- a/drivers/gpu/drm/exynos/exynos_mixer.c >> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c >> @@ -584,7 +584,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx, >> unsigned long flags; >> unsigned int win =lane->index; >> unsigned int x_ratio =, 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; >> @@ -618,12 +618,10 @@ static void mixer_graph_buffer(struct mixer_context *ctx, >> dst_x_offset =tate->crtc.x; >> dst_y_offset =tate->crtc.y; >> >> - /* converting dma address base and source offset */ >> + /* translate dma address base s.t. the source image offset is zero */ >> dma_addr =xynos_drm_fb_dma_addr(fb, 0) >> + (state->src.x * fb->format->cpp[0]) >> + (state->src.y * fb->pitches[0]); >> - src_x_offset =; >> - src_y_offset =; >> >> if (mode->flags & DRM_MODE_FLAG_INTERLACE) >> __set_bit(MXR_BIT_INTERLACE, &ctx->flags); >> @@ -654,11 +652,6 @@ static void mixer_graph_buffer(struct mixer_context *ctx, >> val |=XR_GRP_WH_V_SCALE(y_ratio); >> mixer_reg_write(res, MXR_GRAPHIC_WH(win), val); >> >> - /* setup offsets in source image */ >> - val =XR_GRP_SXY_SX(src_x_offset); >> - val |=XR_GRP_SXY_SY(src_y_offset); >> - mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val); > > The offset of source buffer can be set at bootloader so previous value can be keeped. I think MXR_GRAPHIC_SXY register should be cleared at mixer_win_reset function if you want to remove above lines. > Good idea, will do so. - Tobias >> - >> /* setup offsets in display image */ >> val =XR_GRP_DXY_DX(dst_x_offset); >> val |=XR_GRP_DXY_DY(dst_y_offset); >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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