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video: dw_mipi_dsi: Fix hsync/vsync settings

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These must be read from timings->flags, like other DSI HOST drivers do.

And they must not be inverted either. Low means low.

Without this fix, panel drivers that set *SYNC_LOW produce corrupted
output on screen (shifted horizontally and vertically by back porch
distance).

Signed-off-by: Ondrej Jirman <megi@xff.cz>
This commit is contained in:
Ondrej Jirman 2023-05-22 23:47:02 +02:00 • committed by Anatolij Gustschin
parent f4c7efe011
commit e62f2a622b
1 changed files with 2 additions and 2 deletions
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4
drivers/video/dw_mipi_dsi.c
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@ -538,9 +538,9 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,
break; break;
} }
if (device->mode_flags & DISPLAY_FLAGS_VSYNC_HIGH) if (timings->flags & DISPLAY_FLAGS_VSYNC_LOW)
val |= VSYNC_ACTIVE_LOW; val |= VSYNC_ACTIVE_LOW;
if (device->mode_flags & DISPLAY_FLAGS_HSYNC_HIGH) if (timings->flags & DISPLAY_FLAGS_HSYNC_LOW)
val |= HSYNC_ACTIVE_LOW; val |= HSYNC_ACTIVE_LOW;
dsi_write(dsi, DSI_DPI_VCID, DPI_VCID(dsi->channel)); dsi_write(dsi, DSI_DPI_VCID, DPI_VCID(dsi->channel));