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Message-Id: <20210709010055.86663-1-someguy@effective-light.com>
Date: Thu, 8 Jul 2021 21:00:38 -0400
From: Hamza Mahfooz <someguy@...ective-light.com>
To: linux-kernel@...r.kernel.org
Cc: Hamza Mahfooz <someguy@...ective-light.com>,
Daniel Vetter <daniel.vetter@...ll.ch>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
Thomas Zimmermann <tzimmermann@...e.de>,
Peilin Ye <yepeilin.cs@...il.com>,
Jing Xiangfeng <jingxiangfeng@...wei.com>,
George Kennedy <george.kennedy@...cle.com>,
Sam Ravnborg <sam@...nborg.org>,
dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: [PATCH] fbcon: garbage collect fbdev scrolling acceleration
As per commit 39aead8373b3 ("fbcon: Disable accelerated scrolling"), we can
now remove all of the code that was made redundant by disabling scrolling
acceleration.
Signed-off-by: Hamza Mahfooz <someguy@...ective-light.com>
---
drivers/video/fbdev/core/bitblit.c | 16 -
drivers/video/fbdev/core/fbcon.c | 520 +-----------------------
drivers/video/fbdev/core/fbcon.h | 59 ---
drivers/video/fbdev/core/fbcon_ccw.c | 27 +-
drivers/video/fbdev/core/fbcon_cw.c | 27 +-
drivers/video/fbdev/core/fbcon_rotate.h | 9 -
drivers/video/fbdev/core/fbcon_ud.c | 36 +-
drivers/video/fbdev/core/tileblit.c | 16 -
8 files changed, 38 insertions(+), 672 deletions(-)
diff --git a/drivers/video/fbdev/core/bitblit.c b/drivers/video/fbdev/core/bitblit.c
index f98e8f298bc1..01fae2c96965 100644
--- a/drivers/video/fbdev/core/bitblit.c
+++ b/drivers/video/fbdev/core/bitblit.c
@@ -43,21 +43,6 @@ static void update_attr(u8 *dst, u8 *src, int attribute,
}
}
-static void bit_bmove(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width)
-{
- struct fb_copyarea area;
-
- area.sx = sx * vc->vc_font.width;
- area.sy = sy * vc->vc_font.height;
- area.dx = dx * vc->vc_font.width;
- area.dy = dy * vc->vc_font.height;
- area.height = height * vc->vc_font.height;
- area.width = width * vc->vc_font.width;
-
- info->fbops->fb_copyarea(info, &area);
-}
-
static void bit_clear(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width)
{
@@ -393,7 +378,6 @@ static int bit_update_start(struct fb_info *info)
void fbcon_set_bitops(struct fbcon_ops *ops)
{
- ops->bmove = bit_bmove;
ops->clear = bit_clear;
ops->putcs = bit_putcs;
ops->clear_margins = bit_clear_margins;
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 22bb3892f6bd..a2facd53e5a5 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -173,8 +173,6 @@ static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
int count, int ypos, int xpos);
static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
static void fbcon_cursor(struct vc_data *vc, int mode);
-static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
- int height, int width);
static int fbcon_switch(struct vc_data *vc);
static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
@@ -182,16 +180,8 @@ static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table);
/*
* Internal routines
*/
-static __inline__ void ywrap_up(struct vc_data *vc, int count);
-static __inline__ void ywrap_down(struct vc_data *vc, int count);
-static __inline__ void ypan_up(struct vc_data *vc, int count);
-static __inline__ void ypan_down(struct vc_data *vc, int count);
-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,
- int line, int count, int dy);
static void fbcon_modechanged(struct fb_info *info);
static void fbcon_set_all_vcs(struct fb_info *info);
static void fbcon_start(void);
@@ -1135,14 +1125,6 @@ static void fbcon_init(struct vc_data *vc, int init)
ops->graphics = 0;
- /*
- * No more hw acceleration for fbcon.
- *
- * FIXME: Garbage collect all the now dead code after sufficient time
- * has passed.
- */
- p->scrollmode = SCROLL_REDRAW;
-
/*
* ++guenther: console.c:vc_allocate() relies on initializing
* vc_{cols,rows}, but we must not set those if we are only
@@ -1229,7 +1211,7 @@ static void fbcon_deinit(struct vc_data *vc)
* This system is now divided into two levels because of complications
* caused by hardware scrolling. Top level functions:
*
- * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
+ * fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
*
* handles y values in range [0, scr_height-1] that correspond to real
* screen positions. y_wrap shift means that first line of bitmap may be
@@ -1409,224 +1391,6 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
}
}
-static __inline__ void ywrap_up(struct vc_data *vc, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *p = &fb_display[vc->vc_num];
-
- p->yscroll += count;
- if (p->yscroll >= p->vrows) /* Deal with wrap */
- p->yscroll -= p->vrows;
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode |= FB_VMODE_YWRAP;
- ops->update_start(info);
- scrollback_max += count;
- if (scrollback_max > scrollback_phys_max)
- scrollback_max = scrollback_phys_max;
- scrollback_current = 0;
-}
-
-static __inline__ void ywrap_down(struct vc_data *vc, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *p = &fb_display[vc->vc_num];
-
- p->yscroll -= count;
- if (p->yscroll < 0) /* Deal with wrap */
- p->yscroll += p->vrows;
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode |= FB_VMODE_YWRAP;
- ops->update_start(info);
- scrollback_max -= count;
- if (scrollback_max < 0)
- scrollback_max = 0;
- scrollback_current = 0;
-}
-
-static __inline__ void ypan_up(struct vc_data *vc, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_display *p = &fb_display[vc->vc_num];
- struct fbcon_ops *ops = info->fbcon_par;
-
- p->yscroll += count;
- if (p->yscroll > p->vrows - vc->vc_rows) {
- ops->bmove(vc, info, p->vrows - vc->vc_rows,
- 0, 0, 0, vc->vc_rows, vc->vc_cols);
- p->yscroll -= p->vrows - vc->vc_rows;
- }
-
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode &= ~FB_VMODE_YWRAP;
- ops->update_start(info);
- fbcon_clear_margins(vc, 1);
- scrollback_max += count;
- if (scrollback_max > scrollback_phys_max)
- scrollback_max = scrollback_phys_max;
- scrollback_current = 0;
-}
-
-static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *p = &fb_display[vc->vc_num];
-
- p->yscroll += count;
-
- if (p->yscroll > p->vrows - vc->vc_rows) {
- p->yscroll -= p->vrows - vc->vc_rows;
- fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
- }
-
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode &= ~FB_VMODE_YWRAP;
- ops->update_start(info);
- fbcon_clear_margins(vc, 1);
- scrollback_max += count;
- if (scrollback_max > scrollback_phys_max)
- scrollback_max = scrollback_phys_max;
- scrollback_current = 0;
-}
-
-static __inline__ void ypan_down(struct vc_data *vc, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_display *p = &fb_display[vc->vc_num];
- struct fbcon_ops *ops = info->fbcon_par;
-
- p->yscroll -= count;
- if (p->yscroll < 0) {
- ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
- 0, vc->vc_rows, vc->vc_cols);
- p->yscroll += p->vrows - vc->vc_rows;
- }
-
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode &= ~FB_VMODE_YWRAP;
- ops->update_start(info);
- fbcon_clear_margins(vc, 1);
- scrollback_max -= count;
- if (scrollback_max < 0)
- scrollback_max = 0;
- scrollback_current = 0;
-}
-
-static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
-{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *p = &fb_display[vc->vc_num];
-
- p->yscroll -= count;
-
- if (p->yscroll < 0) {
- p->yscroll += p->vrows - vc->vc_rows;
- fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
- }
-
- ops->var.xoffset = 0;
- ops->var.yoffset = p->yscroll * vc->vc_font.height;
- ops->var.vmode &= ~FB_VMODE_YWRAP;
- ops->update_start(info);
- fbcon_clear_margins(vc, 1);
- scrollback_max -= count;
- if (scrollback_max < 0)
- scrollback_max = 0;
- scrollback_current = 0;
-}
-
-static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
- int line, int count, int dy)
-{
- unsigned short *s = (unsigned short *)
- (vc->vc_origin + vc->vc_size_row * line);
-
- while (count--) {
- unsigned short *start = s;
- unsigned short *le = advance_row(s, 1);
- unsigned short c;
- int x = 0;
- unsigned short attr = 1;
-
- do {
- c = scr_readw(s);
- if (attr != (c & 0xff00)) {
- attr = c & 0xff00;
- if (s > start) {
- fbcon_putcs(vc, start, s - start,
- dy, x);
- x += s - start;
- start = s;
- }
- }
- console_conditional_schedule();
- s++;
- } while (s < le);
- if (s > start)
- fbcon_putcs(vc, start, s - start, dy, x);
- console_conditional_schedule();
- dy++;
- }
-}
-
-static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
- struct fbcon_display *p, int line, int count, int ycount)
-{
- int offset = ycount * vc->vc_cols;
- unsigned short *d = (unsigned short *)
- (vc->vc_origin + vc->vc_size_row * line);
- unsigned short *s = d + offset;
- struct fbcon_ops *ops = info->fbcon_par;
-
- while (count--) {
- unsigned short *start = s;
- unsigned short *le = advance_row(s, 1);
- unsigned short c;
- int x = 0;
-
- do {
- c = scr_readw(s);
-
- if (c == scr_readw(d)) {
- if (s > start) {
- ops->bmove(vc, info, line + ycount, x,
- line, x, 1, s-start);
- x += s - start + 1;
- start = s + 1;
- } else {
- x++;
- start++;
- }
- }
-
- scr_writew(c, d);
- console_conditional_schedule();
- s++;
- d++;
- } while (s < le);
- if (s > start)
- ops->bmove(vc, info, line + ycount, x, line, x, 1,
- s-start);
- console_conditional_schedule();
- if (ycount > 0)
- line++;
- else {
- line--;
- /* NOTE: We subtract two lines from these pointers */
- s -= vc->vc_size_row;
- d -= vc->vc_size_row;
- }
- }
-}
-
static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int offset)
{
@@ -1687,266 +1451,40 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_display *p = &fb_display[vc->vc_num];
- int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
if (fbcon_is_inactive(vc, info))
return true;
fbcon_cursor(vc, CM_ERASE);
-
- /*
- * ++Geert: Only use ywrap/ypan if the console is in text mode
- * ++Andrew: Only use ypan on hardware text mode when scrolling the
- * whole screen (prevents flicker).
- */
+ if (count > vc->vc_rows) /* Maximum realistic size */
+ count = vc->vc_rows;
switch (dir) {
case SM_UP:
- if (count > vc->vc_rows) /* Maximum realistic size */
- count = vc->vc_rows;
- if (logo_shown >= 0)
- goto redraw_up;
- switch (p->scrollmode) {
- case SCROLL_MOVE:
- fbcon_redraw_blit(vc, info, p, t, b - t - count,
- count);
- fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
- scr_memsetw((unsigned short *) (vc->vc_origin +
- vc->vc_size_row *
- (b - count)),
- vc->vc_video_erase_char,
- vc->vc_size_row * count);
- return true;
-
- case SCROLL_WRAP_MOVE:
- if (b - t - count > 3 * vc->vc_rows >> 2) {
- if (t > 0)
- fbcon_bmove(vc, 0, 0, count, 0, t,
- vc->vc_cols);
- ywrap_up(vc, count);
- if (vc->vc_rows - b > 0)
- fbcon_bmove(vc, b - count, 0, b, 0,
- vc->vc_rows - b,
- vc->vc_cols);
- } else if (info->flags & FBINFO_READS_FAST)
- fbcon_bmove(vc, t + count, 0, t, 0,
- b - t - count, vc->vc_cols);
- else
- goto redraw_up;
- fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_PAN_REDRAW:
- if ((p->yscroll + count <=
- 2 * (p->vrows - vc->vc_rows))
- && ((!scroll_partial && (b - t == vc->vc_rows))
- || (scroll_partial
- && (b - t - count >
- 3 * vc->vc_rows >> 2)))) {
- if (t > 0)
- fbcon_redraw_move(vc, p, 0, t, count);
- ypan_up_redraw(vc, t, count);
- if (vc->vc_rows - b > 0)
- fbcon_redraw_move(vc, p, b,
- vc->vc_rows - b, b);
- } else
- fbcon_redraw_move(vc, p, t + count, b - t - count, t);
- fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_PAN_MOVE:
- if ((p->yscroll + count <=
- 2 * (p->vrows - vc->vc_rows))
- && ((!scroll_partial && (b - t == vc->vc_rows))
- || (scroll_partial
- && (b - t - count >
- 3 * vc->vc_rows >> 2)))) {
- if (t > 0)
- fbcon_bmove(vc, 0, 0, count, 0, t,
- vc->vc_cols);
- ypan_up(vc, count);
- if (vc->vc_rows - b > 0)
- fbcon_bmove(vc, b - count, 0, b, 0,
- vc->vc_rows - b,
- vc->vc_cols);
- } else if (info->flags & FBINFO_READS_FAST)
- fbcon_bmove(vc, t + count, 0, t, 0,
- b - t - count, vc->vc_cols);
- else
- goto redraw_up;
- fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_REDRAW:
- redraw_up:
- fbcon_redraw(vc, p, t, b - t - count,
- count * vc->vc_cols);
- fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
- scr_memsetw((unsigned short *) (vc->vc_origin +
- vc->vc_size_row *
- (b - count)),
- vc->vc_video_erase_char,
- vc->vc_size_row * count);
- return true;
- }
- break;
+ fbcon_redraw(vc, p, t, b - t - count,
+ count * vc->vc_cols);
+ fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
+ scr_memsetw((unsigned short *) (vc->vc_origin +
+ vc->vc_size_row *
+ (b - count)),
+ vc->vc_video_erase_char,
+ vc->vc_size_row * count);
+ return true;
case SM_DOWN:
- if (count > vc->vc_rows) /* Maximum realistic size */
- count = vc->vc_rows;
- if (logo_shown >= 0)
- goto redraw_down;
- switch (p->scrollmode) {
- case SCROLL_MOVE:
- fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
- -count);
- fbcon_clear(vc, t, 0, count, vc->vc_cols);
- scr_memsetw((unsigned short *) (vc->vc_origin +
- vc->vc_size_row *
- t),
- vc->vc_video_erase_char,
- vc->vc_size_row * count);
- return true;
-
- case SCROLL_WRAP_MOVE:
- if (b - t - count > 3 * vc->vc_rows >> 2) {
- if (vc->vc_rows - b > 0)
- fbcon_bmove(vc, b, 0, b - count, 0,
- vc->vc_rows - b,
- vc->vc_cols);
- ywrap_down(vc, count);
- if (t > 0)
- fbcon_bmove(vc, count, 0, 0, 0, t,
- vc->vc_cols);
- } else if (info->flags & FBINFO_READS_FAST)
- fbcon_bmove(vc, t, 0, t + count, 0,
- b - t - count, vc->vc_cols);
- else
- goto redraw_down;
- fbcon_clear(vc, t, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_PAN_MOVE:
- if ((count - p->yscroll <= p->vrows - vc->vc_rows)
- && ((!scroll_partial && (b - t == vc->vc_rows))
- || (scroll_partial
- && (b - t - count >
- 3 * vc->vc_rows >> 2)))) {
- if (vc->vc_rows - b > 0)
- fbcon_bmove(vc, b, 0, b - count, 0,
- vc->vc_rows - b,
- vc->vc_cols);
- ypan_down(vc, count);
- if (t > 0)
- fbcon_bmove(vc, count, 0, 0, 0, t,
- vc->vc_cols);
- } else if (info->flags & FBINFO_READS_FAST)
- fbcon_bmove(vc, t, 0, t + count, 0,
- b - t - count, vc->vc_cols);
- else
- goto redraw_down;
- fbcon_clear(vc, t, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_PAN_REDRAW:
- if ((count - p->yscroll <= p->vrows - vc->vc_rows)
- && ((!scroll_partial && (b - t == vc->vc_rows))
- || (scroll_partial
- && (b - t - count >
- 3 * vc->vc_rows >> 2)))) {
- if (vc->vc_rows - b > 0)
- fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
- b - count);
- ypan_down_redraw(vc, t, count);
- if (t > 0)
- fbcon_redraw_move(vc, p, count, t, 0);
- } else
- fbcon_redraw_move(vc, p, t, b - t - count, t + count);
- fbcon_clear(vc, t, 0, count, vc->vc_cols);
- break;
-
- case SCROLL_REDRAW:
- redraw_down:
- fbcon_redraw(vc, p, b - 1, b - t - count,
- -count * vc->vc_cols);
- fbcon_clear(vc, t, 0, count, vc->vc_cols);
- scr_memsetw((unsigned short *) (vc->vc_origin +
- vc->vc_size_row *
- t),
- vc->vc_video_erase_char,
- vc->vc_size_row * count);
- return true;
- }
+ fbcon_redraw(vc, p, b - 1, b - t - count,
+ -count * vc->vc_cols);
+ fbcon_clear(vc, t, 0, count, vc->vc_cols);
+ scr_memsetw((unsigned short *) (vc->vc_origin +
+ vc->vc_size_row *
+ t),
+ vc->vc_video_erase_char,
+ vc->vc_size_row * count);
+ return true;
}
return false;
}
-
-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(struct fbcon_display *p,
struct fb_info *info,
struct vc_data *vc)
@@ -2119,21 +1657,7 @@ static int fbcon_switch(struct vc_data *vc)
updatescrollmode(p, info, vc);
- switch (p->scrollmode) {
- case SCROLL_WRAP_MOVE:
- scrollback_phys_max = p->vrows - vc->vc_rows;
- break;
- case SCROLL_PAN_MOVE:
- case SCROLL_PAN_REDRAW:
- scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
- if (scrollback_phys_max < 0)
- scrollback_phys_max = 0;
- break;
- default:
- scrollback_phys_max = 0;
- break;
- }
-
+ scrollback_phys_max = 0;
scrollback_max = 0;
scrollback_current = 0;
diff --git a/drivers/video/fbdev/core/fbcon.h b/drivers/video/fbdev/core/fbcon.h
index 9315b360c898..a00603b4451a 100644
--- a/drivers/video/fbdev/core/fbcon.h
+++ b/drivers/video/fbdev/core/fbcon.h
@@ -29,7 +29,6 @@ struct fbcon_display {
/* Filled in by the low-level console driver */
const u_char *fontdata;
int userfont; /* != 0 if fontdata kmalloc()ed */
- u_short scrollmode; /* Scroll Method */
u_short inverse; /* != 0 text black on white as default */
short yscroll; /* Hardware scrolling */
int vrows; /* number of virtual rows */
@@ -52,8 +51,6 @@ struct fbcon_display {
};
struct fbcon_ops {
- void (*bmove)(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width);
void (*clear)(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width);
void (*putcs)(struct vc_data *vc, struct fb_info *info,
@@ -152,62 +149,6 @@ static inline int attr_col_ec(int shift, struct vc_data *vc,
#define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0)
#define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1)
- /*
- * Scroll Method
- */
-
-/* There are several methods fbcon can use to move text around the screen:
- *
- * Operation Pan Wrap
- *---------------------------------------------
- * SCROLL_MOVE copyarea No No
- * SCROLL_PAN_MOVE copyarea Yes No
- * SCROLL_WRAP_MOVE copyarea No Yes
- * SCROLL_REDRAW imageblit No No
- * SCROLL_PAN_REDRAW imageblit Yes No
- * SCROLL_WRAP_REDRAW imageblit No Yes
- *
- * (SCROLL_WRAP_REDRAW is not implemented yet)
- *
- * In general, fbcon will choose the best scrolling
- * method based on the rule below:
- *
- * Pan/Wrap > accel imageblit > accel copyarea >
- * soft imageblit > (soft copyarea)
- *
- * Exception to the rule: Pan + accel copyarea is
- * preferred over Pan + accel imageblit.
- *
- * The above is typical for PCI/AGP cards. Unless
- * overridden, fbcon will never use soft copyarea.
- *
- * If you need to override the above rule, set the
- * appropriate flags in fb_info->flags. For example,
- * to prefer copyarea over imageblit, set
- * FBINFO_READS_FAST.
- *
- * Other notes:
- * + use the hardware engine to move the text
- * (hw-accelerated copyarea() and fillrect())
- * + use hardware-supported panning on a large virtual screen
- * + amifb can not only pan, but also wrap the display by N lines
- * (i.e. visible line i = physical line (i+N) % yres).
- * + read what's already rendered on the screen and
- * write it in a different place (this is cfb_copyarea())
- * + re-render the text to the screen
- *
- * Whether to use wrapping or panning can only be figured out at
- * runtime (when we know whether our font height is a multiple
- * of the pan/wrap step)
- *
- */
-
-#define SCROLL_MOVE 0x001
-#define SCROLL_PAN_MOVE 0x002
-#define SCROLL_WRAP_MOVE 0x003
-#define SCROLL_REDRAW 0x004
-#define SCROLL_PAN_REDRAW 0x005
-
#ifdef CONFIG_FB_TILEBLITTING
extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info);
#endif
diff --git a/drivers/video/fbdev/core/fbcon_ccw.c b/drivers/video/fbdev/core/fbcon_ccw.c
index 9cd2c4b05c32..3e787a4265db 100644
--- a/drivers/video/fbdev/core/fbcon_ccw.c
+++ b/drivers/video/fbdev/core/fbcon_ccw.c
@@ -59,31 +59,13 @@ static void ccw_update_attr(u8 *dst, u8 *src, int attribute,
}
}
-
-static void ccw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width)
-{
- struct fbcon_ops *ops = info->fbcon_par;
- struct fb_copyarea area;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
-
- area.sx = sy * vc->vc_font.height;
- area.sy = vyres - ((sx + width) * vc->vc_font.width);
- area.dx = dy * vc->vc_font.height;
- area.dy = vyres - ((dx + width) * vc->vc_font.width);
- area.width = height * vc->vc_font.height;
- area.height = width * vc->vc_font.width;
-
- info->fbops->fb_copyarea(info, &area);
-}
-
static void ccw_clear(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width)
{
struct fbcon_ops *ops = info->fbcon_par;
struct fb_fillrect region;
int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
region.color = attr_bgcol_ec(bgshift,vc,info);
region.dx = sy * vc->vc_font.height;
@@ -140,7 +122,7 @@ static void ccw_putcs(struct vc_data *vc, struct fb_info *info,
u32 cnt, pitch, size;
u32 attribute = get_attribute(info, scr_readw(s));
u8 *dst, *buf = NULL;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
if (!ops->fontbuffer)
return;
@@ -229,7 +211,7 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
int err = 1, dx, dy;
char *src;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
if (!ops->fontbuffer)
return;
@@ -387,7 +369,7 @@ static int ccw_update_start(struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
u32 yoffset;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
int err;
yoffset = (vyres - info->var.yres) - ops->var.xoffset;
@@ -402,7 +384,6 @@ static int ccw_update_start(struct fb_info *info)
void fbcon_rotate_ccw(struct fbcon_ops *ops)
{
- ops->bmove = ccw_bmove;
ops->clear = ccw_clear;
ops->putcs = ccw_putcs;
ops->clear_margins = ccw_clear_margins;
diff --git a/drivers/video/fbdev/core/fbcon_cw.c b/drivers/video/fbdev/core/fbcon_cw.c
index 88d89fad3f05..429ad4bf293e 100644
--- a/drivers/video/fbdev/core/fbcon_cw.c
+++ b/drivers/video/fbdev/core/fbcon_cw.c
@@ -44,31 +44,13 @@ static void cw_update_attr(u8 *dst, u8 *src, int attribute,
}
}
-
-static void cw_bmove(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width)
-{
- struct fbcon_ops *ops = info->fbcon_par;
- struct fb_copyarea area;
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
-
- area.sx = vxres - ((sy + height) * vc->vc_font.height);
- area.sy = sx * vc->vc_font.width;
- area.dx = vxres - ((dy + height) * vc->vc_font.height);
- area.dy = dx * vc->vc_font.width;
- area.width = height * vc->vc_font.height;
- area.height = width * vc->vc_font.width;
-
- info->fbops->fb_copyarea(info, &area);
-}
-
static void cw_clear(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width)
{
struct fbcon_ops *ops = info->fbcon_par;
struct fb_fillrect region;
int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vxres = info->var.xres;
region.color = attr_bgcol_ec(bgshift,vc,info);
region.dx = vxres - ((sy + height) * vc->vc_font.height);
@@ -125,7 +107,7 @@ static void cw_putcs(struct vc_data *vc, struct fb_info *info,
u32 cnt, pitch, size;
u32 attribute = get_attribute(info, scr_readw(s));
u8 *dst, *buf = NULL;
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vxres = info->var.xres;
if (!ops->fontbuffer)
return;
@@ -212,7 +194,7 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
int err = 1, dx, dy;
char *src;
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vxres = info->var.xres;
if (!ops->fontbuffer)
return;
@@ -369,7 +351,7 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode,
static int cw_update_start(struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vxres = info->var.xres;
u32 xoffset;
int err;
@@ -385,7 +367,6 @@ static int cw_update_start(struct fb_info *info)
void fbcon_rotate_cw(struct fbcon_ops *ops)
{
- ops->bmove = cw_bmove;
ops->clear = cw_clear;
ops->putcs = cw_putcs;
ops->clear_margins = cw_clear_margins;
diff --git a/drivers/video/fbdev/core/fbcon_rotate.h b/drivers/video/fbdev/core/fbcon_rotate.h
index e233444cda66..b528b2e54283 100644
--- a/drivers/video/fbdev/core/fbcon_rotate.h
+++ b/drivers/video/fbdev/core/fbcon_rotate.h
@@ -11,15 +11,6 @@
#ifndef _FBCON_ROTATE_H
#define _FBCON_ROTATE_H
-#define GETVYRES(s,i) ({ \
- (s == SCROLL_REDRAW || s == SCROLL_MOVE) ? \
- (i)->var.yres : (i)->var.yres_virtual; })
-
-#define GETVXRES(s,i) ({ \
- (s == SCROLL_REDRAW || s == SCROLL_MOVE || !(i)->fix.xpanstep) ? \
- (i)->var.xres : (i)->var.xres_virtual; })
-
-
static inline int pattern_test_bit(u32 x, u32 y, u32 pitch, const char *pat)
{
u32 tmp = (y * pitch) + x, index = tmp / 8, bit = tmp % 8;
diff --git a/drivers/video/fbdev/core/fbcon_ud.c b/drivers/video/fbdev/core/fbcon_ud.c
index 8d5e66b1bdfb..8a9d74dddf86 100644
--- a/drivers/video/fbdev/core/fbcon_ud.c
+++ b/drivers/video/fbdev/core/fbcon_ud.c
@@ -44,33 +44,14 @@ static void ud_update_attr(u8 *dst, u8 *src, int attribute,
}
}
-
-static void ud_bmove(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width)
-{
- struct fbcon_ops *ops = info->fbcon_par;
- struct fb_copyarea area;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
-
- area.sy = vyres - ((sy + height) * vc->vc_font.height);
- area.sx = vxres - ((sx + width) * vc->vc_font.width);
- area.dy = vyres - ((dy + height) * vc->vc_font.height);
- area.dx = vxres - ((dx + width) * vc->vc_font.width);
- area.height = height * vc->vc_font.height;
- area.width = width * vc->vc_font.width;
-
- info->fbops->fb_copyarea(info, &area);
-}
-
static void ud_clear(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width)
{
struct fbcon_ops *ops = info->fbcon_par;
struct fb_fillrect region;
int bgshift = (vc->vc_hi_font_mask) ? 13 : 12;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
+ u32 vxres = info->var.xres;
region.color = attr_bgcol_ec(bgshift,vc,info);
region.dy = vyres - ((sy + height) * vc->vc_font.height);
@@ -162,8 +143,8 @@ static void ud_putcs(struct vc_data *vc, struct fb_info *info,
u32 mod = vc->vc_font.width % 8, cnt, pitch, size;
u32 attribute = get_attribute(info, scr_readw(s));
u8 *dst, *buf = NULL;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
+ u32 vxres = info->var.xres;
if (!ops->fontbuffer)
return;
@@ -259,8 +240,8 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode,
int attribute, use_sw = vc->vc_cursor_type & CUR_SW;
int err = 1, dx, dy;
char *src;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
+ u32 vxres = info->var.xres;
if (!ops->fontbuffer)
return;
@@ -410,8 +391,8 @@ static int ud_update_start(struct fb_info *info)
{
struct fbcon_ops *ops = info->fbcon_par;
int xoffset, yoffset;
- u32 vyres = GETVYRES(ops->p->scrollmode, info);
- u32 vxres = GETVXRES(ops->p->scrollmode, info);
+ u32 vyres = info->var.yres;
+ u32 vxres = info->var.xres;
int err;
xoffset = vxres - info->var.xres - ops->var.xoffset;
@@ -429,7 +410,6 @@ static int ud_update_start(struct fb_info *info)
void fbcon_rotate_ud(struct fbcon_ops *ops)
{
- ops->bmove = ud_bmove;
ops->clear = ud_clear;
ops->putcs = ud_putcs;
ops->clear_margins = ud_clear_margins;
diff --git a/drivers/video/fbdev/core/tileblit.c b/drivers/video/fbdev/core/tileblit.c
index 2768eff247ba..72af95053bcb 100644
--- a/drivers/video/fbdev/core/tileblit.c
+++ b/drivers/video/fbdev/core/tileblit.c
@@ -16,21 +16,6 @@
#include <asm/types.h>
#include "fbcon.h"
-static void tile_bmove(struct vc_data *vc, struct fb_info *info, int sy,
- int sx, int dy, int dx, int height, int width)
-{
- struct fb_tilearea area;
-
- area.sx = sx;
- area.sy = sy;
- area.dx = dx;
- area.dy = dy;
- area.height = height;
- area.width = width;
-
- info->tileops->fb_tilecopy(info, &area);
-}
-
static void tile_clear(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width)
{
@@ -133,7 +118,6 @@ void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info)
struct fb_tilemap map;
struct fbcon_ops *ops = info->fbcon_par;
- ops->bmove = tile_bmove;
ops->clear = tile_clear;
ops->putcs = tile_putcs;
ops->clear_margins = tile_clear_margins;
--
2.32.0
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