Hi Daniel, On 2014년 05월 05일 00:26, Daniel Kurtz wrote: > Mixer hardware supports offsetting dma from start of source buffer using > the MXR_GRP_SXY register. > > Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > --- > drivers/gpu/drm/exynos/exynos_mixer.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c > index 475eb49..40cf39b 100644 > --- a/drivers/gpu/drm/exynos/exynos_mixer.c > +++ b/drivers/gpu/drm/exynos/exynos_mixer.c > @@ -529,13 +529,11 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win) > > dst_x_offset = win_data->crtc_x; > dst_y_offset = win_data->crtc_y; > + src_x_offset = win_data->fb_x; > + src_y_offset = win_data->fb_y; > > /* converting dma address base and source offset */ > - dma_addr = win_data->dma_addr > - + (win_data->fb_x * win_data->bpp >> 3) > - + (win_data->fb_y * win_data->fb_width * win_data->bpp >> 3); > - src_x_offset = 0; > - src_y_offset = 0; > + dma_addr = win_data->dma_addr; Basically, you are right and source offset register can be used. But because of limitation of resolution for mixer up to 1920x1080, I considered modified soruce dma address to set one frame buffer, which is bigger than 1920x1080, on to both fimd and hdmi. Regards, - Seung-Woo Kim > > if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE) > ctx->interlace = true; > -- Seung-Woo Kim Samsung Software R&D Center -- -- 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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