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video: Allow filling the display with a colour

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Generalise the video_clear() function to allow filling with a different
colour.

Tidy up the comments while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-10-06 08:36:08 -06:00 committed by Anatolij Gustschin
parent 820b5894c1
commit 50d562c01f
2 changed files with 27 additions and 6 deletions
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20
drivers/video/video-uclass.c
View file

@ -126,7 +126,7 @@ int video_reserve(ulong *addrp)
return 0;
}
int video_clear(struct udevice *dev)
int video_fill(struct udevice *dev, u32 colour)
{
struct video_priv *priv = dev_get_uclass_priv(dev);
int ret;
@ -138,7 +138,7 @@ int video_clear(struct udevice *dev)
u16 *end = priv->fb + priv->fb_size;
while (ppix < end)
*ppix++ = priv->colour_bg;
*ppix++ = colour;
break;
}
case VIDEO_BPP32:
@ -147,11 +147,11 @@ int video_clear(struct udevice *dev)
u32 *end = priv->fb + priv->fb_size;
while (ppix < end)
*ppix++ = priv->colour_bg;
*ppix++ = colour;
break;
}
default:
memset(priv->fb, priv->colour_bg, priv->fb_size);
memset(priv->fb, colour, priv->fb_size);
break;
}
ret = video_sync_copy(dev, priv->fb, priv->fb + priv->fb_size);
@ -161,6 +161,18 @@ int video_clear(struct udevice *dev)
return video_sync(dev, false);
}
int video_clear(struct udevice *dev)
{
struct video_priv *priv = dev_get_uclass_priv(dev);
int ret;
ret = video_fill(dev, priv->colour_bg);
if (ret)
return ret;
return 0;
}
static const struct vid_rgb colours[VID_COLOUR_COUNT] = {
{ 0x00, 0x00, 0x00 }, /* black */
{ 0xc0, 0x00, 0x00 }, /* red */

13
include/video.h
View file

@ -185,13 +185,22 @@ u32 video_index_to_colour(struct video_priv *priv, unsigned int idx);
int video_reserve(ulong *addrp);
/**
* video_clear() - Clear a device's frame buffer to background color.
* video_clear() - Clear a device's frame buffer to background colour.
*
* @dev: Device to clear
* Return: 0
* Return: 0 on success
*/
int video_clear(struct udevice *dev);
/**
* video_fill() - Fill a device's frame buffer to a colour.
*
* @dev: Device to fill
* @colour: Colour to use, in the frame buffer's format
* Return: 0 on success
*/
int video_fill(struct udevice *dev, u32 colour);
/**
* video_sync() - Sync a device's frame buffer with its hardware
*