| Message ID | 20210808134117.66798-1-jitao.shi@mediatek.com |
|---|---|
| Headers | show |
| Series | force hsa hbp hfp packets multiple of lanenum to avoid screen shift | expand |
Hi, Jitao: Jitao Shi <jitao.shi@mediatek.com> 於 2021年8月8日 週日 下午9:41寫道： > > The bridge chip ANX7625 requires the packets on lanes aligned at the end, > or ANX7625 will shift the screen. In anx7625_attach_dsi(), it call mipi_dsi_attach(), and it call into mtk_dsi_host_attach(). I would like to pass this information from anx7623 driver to mtk_dsi driver when attach. Regards, Chun-Kuang. > > Signed-off-by: Jitao Shi <jitao.shi@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_dsi.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c > index ae403c67cbd9..033234d51e86 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c > @@ -194,6 +194,8 @@ struct mtk_dsi { > struct clk *hs_clk; > > u32 data_rate; > + /* force dsi line end without dsi_null data */ > + bool force_dsi_end_without_null; > > unsigned long mode_flags; > enum mipi_dsi_pixel_format format; > @@ -499,6 +501,13 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) > DRM_WARN("HFP + HBP less than d-phy, FPS will under 60Hz\n"); > } > > + if (dsi->force_dsi_end_without_null) { > + horizontal_sync_active_byte = roundup(horizontal_sync_active_byte, dsi->lanes) - 2; > + horizontal_frontporch_byte = roundup(horizontal_frontporch_byte, dsi->lanes) - 2; > + horizontal_backporch_byte = roundup(horizontal_backporch_byte, dsi->lanes) - 2; > + horizontal_backporch_byte -= (vm->hactive * dsi_tmp_buf_bpp + 2) % dsi->lanes; > + } > + > writel(horizontal_sync_active_byte, dsi->regs + DSI_HSA_WC); > writel(horizontal_backporch_byte, dsi->regs + DSI_HBP_WC); > writel(horizontal_frontporch_byte, dsi->regs + DSI_HFP_WC); > @@ -1095,6 +1104,10 @@ static int mtk_dsi_probe(struct platform_device *pdev) > dsi->bridge.of_node = dev->of_node; > dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; > > + if (dsi->next_bridge) > + dsi->force_dsi_end_without_null = of_device_is_compatible(dsi->next_bridge->of_node, > + "analogix,anx7625"); > + > drm_bridge_add(&dsi->bridge); > > ret = component_add(&pdev->dev, &mtk_dsi_component_ops); > -- > 2.25.1
Changes since v5: - Remvoe the anx7625 devicetree change. Use the compatible string intead. Changes since v4: - Move "dt-bindings: drm/bridge: anx7625: add force_dsi_end_without_null" before "drm/mediatek: force hsa hbp hfp packets multiple of lanenum to avoid". - Retitle "dt-bindings: drm/bridge: anx7625: add force_dsi_end_without_null". Jitao Shi (1): drm/mediatek: force hsa hbp hfp packets multiple of lanenum to avoid screen shift drivers/gpu/drm/mediatek/mtk_dsi.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) -- 2.25.1