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fbcon: Move fbcon_bmove(_rec) functions
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Avoids two forward declarations, and more importantly, matches what
I've done in my fbcon scrolling restore patches - so I need this to
avoid a bunch of conflicts in rebasing since we ended up merging
Helge's series instead.

Acked-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Du Cheng <[email protected]>
Cc: Tetsuo Handa <[email protected]>
Cc: Claudio Suarez <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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danvet committed Apr 7, 2022
1 parent 9ad7acd commit 6893331
Showing 1 changed file with 65 additions and 69 deletions.
134 changes: 65 additions & 69 deletions drivers/video/fbdev/core/fbcon.c
Original file line number Diff line number Diff line change
Expand Up @@ -164,15 +164,11 @@ static int fbcon_cursor_noblink;
*/

static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
int height, int width);
static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);

/*
* Internal routines
*/
static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break);
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
int unit);
static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
Expand Down Expand Up @@ -1667,6 +1663,71 @@ static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
}
}

static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
u_int b;

if (sy < y_break && sy + height > y_break) {
b = y_break - sy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
} else {
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
}
return;
}

if (dy < y_break && dy + height > y_break) {
b = y_break - dy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
} else {
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
}
return;
}
ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
height, width);
}

static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
int height, int width)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_display *p = &fb_display[vc->vc_num];

if (fbcon_is_inactive(vc, info))
return;

if (!width || !height)
return;

/* Split blits that cross physical y_wrap case.
* Pathological case involves 4 blits, better to use recursive
* code rather than unrolled case
*
* Recursive invocations don't need to erase the cursor over and
* over again, so we use fbcon_bmove_rec()
*/
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
p->vrows - p->yscroll);
}

static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
enum con_scroll dir, unsigned int count)
{
Expand Down Expand Up @@ -1867,71 +1928,6 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
}


static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
int height, int width)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_display *p = &fb_display[vc->vc_num];

if (fbcon_is_inactive(vc, info))
return;

if (!width || !height)
return;

/* Split blits that cross physical y_wrap case.
* Pathological case involves 4 blits, better to use recursive
* code rather than unrolled case
*
* Recursive invocations don't need to erase the cursor over and
* over again, so we use fbcon_bmove_rec()
*/
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
p->vrows - p->yscroll);
}

static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
u_int b;

if (sy < y_break && sy + height > y_break) {
b = y_break - sy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
} else {
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
}
return;
}

if (dy < y_break && dy + height > y_break) {
b = y_break - dy;
if (dy < sy) { /* Avoid trashing self */
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
} else {
fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
height - b, width, y_break);
fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
y_break);
}
return;
}
ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
height, width);
}

static void updatescrollmode_accel(struct fbcon_display *p,
struct fb_info *info,
struct vc_data *vc)
Expand Down

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