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video: Provide a function to set the cursor position

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Add an exported function which allows the cursor position to be set to
pixel granularity. Make use of this in the existing code.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-10-06 08:36:04 -06:00 committed by Anatolij Gustschin
parent a032e4b55e
commit 6b6dc0d2fb
2 changed files with 25 additions and 5 deletions
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18
drivers/video/vidconsole-uclass.c
View File

@ -122,6 +122,15 @@ static char *parsenum(char *s, int *num)
return end;
}
void vidconsole_set_cursor_pos(struct udevice *dev, int x, int y)
{
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
priv->xcur_frac = VID_TO_POS(x);
priv->xstart_frac = priv->xcur_frac;
priv->ycur = y;
}
/**
* set_cursor_position() - set cursor position
*
@ -614,12 +623,11 @@ void vidconsole_position_cursor(struct udevice *dev, unsigned col, unsigned row)
struct vidconsole_priv *priv = dev_get_uclass_priv(dev);
struct udevice *vid_dev = dev->parent;
struct video_priv *vid_priv = dev_get_uclass_priv(vid_dev);
short x, y;
col *= priv->x_charsize;
row *= priv->y_charsize;
priv->xcur_frac = VID_TO_POS(min_t(short, col, vid_priv->xsize - 1));
priv->xstart_frac = priv->xcur_frac;
priv->ycur = min_t(short, row, vid_priv->ysize - 1);
x = min_t(short, col * priv->x_charsize, vid_priv->xsize - 1);
y = min_t(short, row * priv->y_charsize, vid_priv->ysize - 1);
vidconsole_set_cursor_pos(dev, x, y);
}
static int do_video_setcursor(struct cmd_tbl *cmdtp, int flag, int argc,

12
include/video_console.h
View File

@ -219,6 +219,18 @@ int vidconsole_put_string(struct udevice *dev, const char *str);
void vidconsole_position_cursor(struct udevice *dev, unsigned col,
unsigned row);
/**
* vidconsole_set_cursor_pos() - set cursor position
*
* The cursor is set to the new position and the start-of-line information is
* updated to the same position, so that a newline will return to @x
*
* @dev: video console device to update
* @x: x position from left in pixels
* @y: y position from top in pixels
*/
void vidconsole_set_cursor_pos(struct udevice *dev, int x, int y);
#ifdef CONFIG_VIDEO_COPY
/**
* vidconsole_sync_copy() - Sync back to the copy framebuffer