Re: [PATCH v4 1/2] Revert "drm/mediatek: dsi: Fix scrolling of panel with small hfp or hbp"

[Bilal Wasim]

Hi Jitao,

On Sat, 10 Oct 2020 15:09:09 +0800
Jitao Shi  wrote:

> This reverts commit 35bf948f1edbf507f6e57e0879fa6ea36d2d2930.
> 
> Signed-off-by: Jitao Shi 
> ---
>  drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c
> b/drivers/gpu/drm/mediatek/mtk_dsi.c index 80b7a082e874..16fd99dcdacf
> 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -466,13 +466,14 @@ static void mtk_dsi_config_vdo_timing(struct
> mtk_dsi *dsi) horizontal_sync_active_byte = (vm->hsync_len *
> dsi_tmp_buf_bpp - 10); 
>   if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
> - horizontal_backporch_byte = vm->hback_porch *
> dsi_tmp_buf_bpp;
> + horizontal_backporch_byte =
> + (vm->hback_porch * dsi_tmp_buf_bpp - 10);
>   else
> - horizontal_backporch_byte = (vm->hback_porch +
> vm->hsync_len) *
> - dsi_tmp_buf_bpp;
> + horizontal_backporch_byte = ((vm->hback_porch +
> vm->hsync_len) *
> + dsi_tmp_buf_bpp - 10);
>  
>   data_phy_cycles = timing->lpx + timing->da_hs_prepare +
> -   timing->da_hs_zero + timing->da_hs_exit;
> +   timing->da_hs_zero + timing->da_hs_exit +
> 3; 
>   if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
>   if ((vm->hfront_porch + vm->hback_porch) *
> dsi_tmp_buf_bpp >

Reviewed-by: Bilal Wasim 
Tested-by: Bilal Wasim 

Thanks,
Bilal

[PATCH v4 1/2] Revert "drm/mediatek: dsi: Fix scrolling of panel with small hfp or hbp"

[Jitao Shi]

This reverts commit 35bf948f1edbf507f6e57e0879fa6ea36d2d2930.

Signed-off-by: Jitao Shi 
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c 
b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 80b7a082e874..16fd99dcdacf 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -466,13 +466,14 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi)
horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10);
 
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
-   horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp;
+   horizontal_backporch_byte =
+   (vm->hback_porch * dsi_tmp_buf_bpp - 10);
else
-   horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) *
-   dsi_tmp_buf_bpp;
+   horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) *
+   dsi_tmp_buf_bpp - 10);
 
data_phy_cycles = timing->lpx + timing->da_hs_prepare +
- timing->da_hs_zero + timing->da_hs_exit;
+ timing->da_hs_zero + timing->da_hs_exit + 3;
 
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) {
if ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp >
-- 
2.12.5