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video: Allow driver to specify the line length

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At present line_length is always calculated in video_post_probe(). But
some hardware may use a different line length, e.g. with a 1366-wide
display.

Allow the driver to set this value if needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Simon Glass 2018-11-29 15:08:52 -07:00 committed by Anatolij Gustschin
parent 8f5bfb7615
commit 06696ebe67
3 changed files with 7 additions and 2 deletions
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1
drivers/pci/pci_rom.c
View File

@ -331,6 +331,7 @@ int vbe_setup_video_priv(struct vesa_mode_info *vesa,
return log_msg_ret("No x resolution", -ENXIO);
uc_priv->xsize = vesa->x_resolution;
uc_priv->ysize = vesa->y_resolution;
uc_priv->line_length = vesa->bytes_per_scanline;
switch (vesa->bits_per_pixel) {
case 32:
case 24:

4
drivers/video/video-uclass.c
View File

@ -226,7 +226,9 @@ static int video_post_probe(struct udevice *dev)
/* Set up the line and display size */
priv->fb = map_sysmem(plat->base, plat->size);
priv->line_length = priv->xsize * VNBYTES(priv->bpix);
if (!priv->line_length)
priv->line_length = priv->xsize * VNBYTES(priv->bpix);
priv->fb_size = priv->line_length * priv->ysize;
/* Set up colors */

4
include/video.h
View File

@ -61,7 +61,9 @@ enum video_log2_bpp {
* @font_size: Font size in pixels (0 to use a default value)
* @fb: Frame buffer
* @fb_size: Frame buffer size
* @line_length: Length of each frame buffer line, in bytes
* @line_length: Length of each frame buffer line, in bytes. This can be
* set by the driver, but if not, the uclass will set it after
* probing
* @colour_fg: Foreground colour (pixel value)
* @colour_bg: Background colour (pixel value)
* @flush_dcache: true to enable flushing of the data cache after