summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/fbdev/core/fbcon.c334
1 files changed, 4 insertions, 330 deletions
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 66167830fefd..983472dbd2aa 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -122,12 +122,6 @@ static int logo_lines;
/* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
enums. */
static int logo_shown = FBCON_LOGO_CANSHOW;
-/* Software scrollback */
-static int fbcon_softback_size = 32768;
-static unsigned long softback_buf, softback_curr;
-static unsigned long softback_in;
-static unsigned long softback_top, softback_end;
-static int softback_lines;
/* console mappings */
static int first_fb_vc;
static int last_fb_vc = MAX_NR_CONSOLES - 1;
@@ -167,8 +161,6 @@ static int margin_color;
static const struct consw fb_con;
-#define CM_SOFTBACK (8)
-
#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
static int fbcon_set_origin(struct vc_data *);
@@ -373,18 +365,6 @@ static int get_color(struct vc_data *vc, struct fb_info *info,
return color;
}
-static void fbcon_update_softback(struct vc_data *vc)
-{
- int l = fbcon_softback_size / vc->vc_size_row;
-
- if (l > 5)
- softback_end = softback_buf + l * vc->vc_size_row;
- else
- /* Smaller scrollback makes no sense, and 0 would screw
- the operation totally */
- softback_top = 0;
-}
-
static void fb_flashcursor(struct work_struct *work)
{
struct fb_info *info = container_of(work, struct fb_info, queue);
@@ -414,7 +394,7 @@ static void fb_flashcursor(struct work_struct *work)
c = scr_readw((u16 *) vc->vc_pos);
mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
CM_ERASE : CM_DRAW;
- ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
+ ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
console_unlock();
}
@@ -471,13 +451,7 @@ static int __init fb_console_setup(char *this_opt)
}
if (!strncmp(options, "scrollback:", 11)) {
- options += 11;
- if (*options) {
- fbcon_softback_size = simple_strtoul(options, &options, 0);
- if (*options == 'k' || *options == 'K') {
- fbcon_softback_size *= 1024;
- }
- }
+ pr_warn("Ignoring scrollback size option\n");
continue;
}
@@ -1022,31 +996,6 @@ static const char *fbcon_startup(void)
set_blitting_type(vc, info);
- if (info->fix.type != FB_TYPE_TEXT) {
- if (fbcon_softback_size) {
- if (!softback_buf) {
- softback_buf =
- (unsigned long)
- kvmalloc(fbcon_softback_size,
- GFP_KERNEL);
- if (!softback_buf) {
- fbcon_softback_size = 0;
- softback_top = 0;
- }
- }
- } else {
- if (softback_buf) {
- kvfree((void *) softback_buf);
- softback_buf = 0;
- softback_top = 0;
- }
- }
- if (softback_buf)
- softback_in = softback_top = softback_curr =
- softback_buf;
- softback_lines = 0;
- }
-
/* Setup default font */
if (!p->fontdata && !vc->vc_font.data) {
if (!fontname[0] || !(font = find_font(fontname)))
@@ -1220,9 +1169,6 @@ static void fbcon_init(struct vc_data *vc, int init)
if (logo)
fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
- if (vc == svc && softback_buf)
- fbcon_update_softback(vc);
-
if (ops->rotate_font && ops->rotate_font(info, vc)) {
ops->rotate = FB_ROTATE_UR;
set_blitting_type(vc, info);
@@ -1385,7 +1331,6 @@ static void fbcon_cursor(struct vc_data *vc, int mode)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- int y;
int c = scr_readw((u16 *) vc->vc_pos);
ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
@@ -1399,16 +1344,8 @@ static void fbcon_cursor(struct vc_data *vc, int mode)
fbcon_add_cursor_timer(info);
ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
- if (mode & CM_SOFTBACK) {
- mode &= ~CM_SOFTBACK;
- y = softback_lines;
- } else {
- if (softback_lines)
- fbcon_set_origin(vc);
- y = 0;
- }
- ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
+ ops->cursor(vc, info, mode, 0, get_color(vc, info, c, 1),
get_color(vc, info, c, 0));
}
@@ -1479,8 +1416,6 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
if (con_is_visible(vc)) {
update_screen(vc);
- if (softback_buf)
- fbcon_update_softback(vc);
}
}
@@ -1618,99 +1553,6 @@ static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
scrollback_current = 0;
}
-static void fbcon_redraw_softback(struct vc_data *vc, struct fbcon_display *p,
- long delta)
-{
- int count = vc->vc_rows;
- unsigned short *d, *s;
- unsigned long n;
- int line = 0;
-
- d = (u16 *) softback_curr;
- if (d == (u16 *) softback_in)
- d = (u16 *) vc->vc_origin;
- n = softback_curr + delta * vc->vc_size_row;
- softback_lines -= delta;
- if (delta < 0) {
- if (softback_curr < softback_top && n < softback_buf) {
- n += softback_end - softback_buf;
- if (n < softback_top) {
- softback_lines -=
- (softback_top - n) / vc->vc_size_row;
- n = softback_top;
- }
- } else if (softback_curr >= softback_top
- && n < softback_top) {
- softback_lines -=
- (softback_top - n) / vc->vc_size_row;
- n = softback_top;
- }
- } else {
- if (softback_curr > softback_in && n >= softback_end) {
- n += softback_buf - softback_end;
- if (n > softback_in) {
- n = softback_in;
- softback_lines = 0;
- }
- } else if (softback_curr <= softback_in && n > softback_in) {
- n = softback_in;
- softback_lines = 0;
- }
- }
- if (n == softback_curr)
- return;
- softback_curr = n;
- s = (u16 *) softback_curr;
- if (s == (u16 *) softback_in)
- s = (u16 *) vc->vc_origin;
- while (count--) {
- unsigned short *start;
- unsigned short *le;
- unsigned short c;
- int x = 0;
- unsigned short attr = 1;
-
- start = s;
- le = advance_row(s, 1);
- do {
- c = scr_readw(s);
- if (attr != (c & 0xff00)) {
- attr = c & 0xff00;
- if (s > start) {
- fbcon_putcs(vc, start, s - start,
- line, x);
- x += s - start;
- start = s;
- }
- }
- if (c == scr_readw(d)) {
- if (s > start) {
- fbcon_putcs(vc, start, s - start,
- line, x);
- x += s - start + 1;
- start = s + 1;
- } else {
- x++;
- start++;
- }
- }
- s++;
- d++;
- } while (s < le);
- if (s > start)
- fbcon_putcs(vc, start, s - start, line, x);
- line++;
- if (d == (u16 *) softback_end)
- d = (u16 *) softback_buf;
- if (d == (u16 *) softback_in)
- d = (u16 *) vc->vc_origin;
- if (s == (u16 *) softback_end)
- s = (u16 *) softback_buf;
- if (s == (u16 *) softback_in)
- s = (u16 *) vc->vc_origin;
- }
-}
-
static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int dy)
{
@@ -1850,31 +1692,6 @@ static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
}
}
-static inline void fbcon_softback_note(struct vc_data *vc, int t,
- int count)
-{
- unsigned short *p;
-
- if (vc->vc_num != fg_console)
- return;
- p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
-
- while (count) {
- scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
- count--;
- p = advance_row(p, 1);
- softback_in += vc->vc_size_row;
- if (softback_in == softback_end)
- softback_in = softback_buf;
- if (softback_in == softback_top) {
- softback_top += vc->vc_size_row;
- if (softback_top == softback_end)
- softback_top = softback_buf;
- }
- }
- softback_curr = softback_in;
-}
-
static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
enum con_scroll dir, unsigned int count)
{
@@ -1897,8 +1714,6 @@ static bool fbcon_scroll(struct vc_data *vc, unsigned int t, unsigned int b,
case SM_UP:
if (count > vc->vc_rows) /* Maximum realistic size */
count = vc->vc_rows;
- if (softback_top)
- fbcon_softback_note(vc, t, count);
if (logo_shown >= 0)
goto redraw_up;
switch (p->scrollmode) {
@@ -2269,14 +2084,6 @@ static int fbcon_switch(struct vc_data *vc)
info = registered_fb[con2fb_map[vc->vc_num]];
ops = info->fbcon_par;
- if (softback_top) {
- if (softback_lines)
- fbcon_set_origin(vc);
- softback_top = softback_curr = softback_in = softback_buf;
- softback_lines = 0;
- fbcon_update_softback(vc);
- }
-
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;
@@ -2600,9 +2407,6 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
int cnt;
char *old_data = NULL;
- if (con_is_visible(vc) && softback_lines)
- fbcon_set_origin(vc);
-
resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
if (p->userfont)
old_data = vc->vc_font.data;
@@ -2628,8 +2432,6 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
cols /= w;
rows /= h;
vc_resize(vc, cols, rows);
- if (con_is_visible(vc) && softback_buf)
- fbcon_update_softback(vc);
} else if (con_is_visible(vc)
&& vc->vc_mode == KD_TEXT) {
fbcon_clear_margins(vc, 0);
@@ -2788,19 +2590,7 @@ static void fbcon_set_palette(struct vc_data *vc, const unsigned char *table)
static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
{
- unsigned long p;
- int line;
-
- if (vc->vc_num != fg_console || !softback_lines)
- return (u16 *) (vc->vc_origin + offset);
- line = offset / vc->vc_size_row;
- if (line >= softback_lines)
- return (u16 *) (vc->vc_origin + offset -
- softback_lines * vc->vc_size_row);
- p = softback_curr + offset;
- if (p >= softback_end)
- p += softback_buf - softback_end;
- return (u16 *) p;
+ return (u16 *) (vc->vc_origin + offset);
}
static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
@@ -2814,22 +2604,7 @@ static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
x = offset % vc->vc_cols;
y = offset / vc->vc_cols;
- if (vc->vc_num == fg_console)
- y += softback_lines;
ret = pos + (vc->vc_cols - x) * 2;
- } else if (vc->vc_num == fg_console && softback_lines) {
- unsigned long offset = pos - softback_curr;
-
- if (pos < softback_curr)
- offset += softback_end - softback_buf;
- offset /= 2;
- x = offset % vc->vc_cols;
- y = offset / vc->vc_cols;
- ret = pos + (vc->vc_cols - x) * 2;
- if (ret == softback_end)
- ret = softback_buf;
- if (ret == softback_in)
- ret = vc->vc_origin;
} else {
/* Should not happen */
x = y = 0;
@@ -2857,106 +2632,11 @@ static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
(((a) & 0x0700) << 4);
scr_writew(a, p++);
- if (p == (u16 *) softback_end)
- p = (u16 *) softback_buf;
- if (p == (u16 *) softback_in)
- p = (u16 *) vc->vc_origin;
- }
-}
-
-static void fbcon_scrolldelta(struct vc_data *vc, int lines)
-{
- struct fb_info *info = registered_fb[con2fb_map[fg_console]];
- struct fbcon_ops *ops = info->fbcon_par;
- struct fbcon_display *disp = &fb_display[fg_console];
- int offset, limit, scrollback_old;
-
- if (softback_top) {
- if (vc->vc_num != fg_console)
- return;
- if (vc->vc_mode != KD_TEXT || !lines)
- return;
- if (logo_shown >= 0) {
- struct vc_data *conp2 = vc_cons[logo_shown].d;
-
- if (conp2->vc_top == logo_lines
- && conp2->vc_bottom == conp2->vc_rows)
- conp2->vc_top = 0;
- if (logo_shown == vc->vc_num) {
- unsigned long p, q;
- int i;
-
- p = softback_in;
- q = vc->vc_origin +
- logo_lines * vc->vc_size_row;
- for (i = 0; i < logo_lines; i++) {
- if (p == softback_top)
- break;
- if (p == softback_buf)
- p = softback_end;
- p -= vc->vc_size_row;
- q -= vc->vc_size_row;
- scr_memcpyw((u16 *) q, (u16 *) p,
- vc->vc_size_row);
- }
- softback_in = softback_curr = p;
- update_region(vc, vc->vc_origin,
- logo_lines * vc->vc_cols);
- }
- logo_shown = FBCON_LOGO_CANSHOW;
- }
- fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
- fbcon_redraw_softback(vc, disp, lines);
- fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
- return;
}
-
- if (!scrollback_phys_max)
- return;
-
- scrollback_old = scrollback_current;
- scrollback_current -= lines;
- if (scrollback_current < 0)
- scrollback_current = 0;
- else if (scrollback_current > scrollback_max)
- scrollback_current = scrollback_max;
- if (scrollback_current == scrollback_old)
- return;
-
- if (fbcon_is_inactive(vc, info))
- return;
-
- fbcon_cursor(vc, CM_ERASE);
-
- offset = disp->yscroll - scrollback_current;
- limit = disp->vrows;
- switch (disp->scrollmode) {
- case SCROLL_WRAP_MOVE:
- info->var.vmode |= FB_VMODE_YWRAP;
- break;
- case SCROLL_PAN_MOVE:
- case SCROLL_PAN_REDRAW:
- limit -= vc->vc_rows;
- info->var.vmode &= ~FB_VMODE_YWRAP;
- break;
- }
- if (offset < 0)
- offset += limit;
- else if (offset >= limit)
- offset -= limit;
-
- ops->var.xoffset = 0;
- ops->var.yoffset = offset * vc->vc_font.height;
- ops->update_start(info);
-
- if (!scrollback_current)
- fbcon_cursor(vc, CM_DRAW);
}
static int fbcon_set_origin(struct vc_data *vc)
{
- if (softback_lines)
- fbcon_scrolldelta(vc, softback_lines);
return 0;
}
@@ -3020,8 +2700,6 @@ static void fbcon_modechanged(struct fb_info *info)
fbcon_set_palette(vc, color_table);
update_screen(vc);
- if (softback_buf)
- fbcon_update_softback(vc);
}
}
@@ -3432,7 +3110,6 @@ static const struct consw fb_con = {
.con_font_default = fbcon_set_def_font,
.con_font_copy = fbcon_copy_font,
.con_set_palette = fbcon_set_palette,
- .con_scrolldelta = fbcon_scrolldelta,
.con_set_origin = fbcon_set_origin,
.con_invert_region = fbcon_invert_region,
.con_screen_pos = fbcon_screen_pos,
@@ -3667,9 +3344,6 @@ static void fbcon_exit(void)
}
#endif
- kvfree((void *)softback_buf);
- softback_buf = 0UL;
-
for_each_registered_fb(i) {
int pending = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 08:49:10 +0000