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path: root/drivers/video/console/fbcon.c
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Diffstat (limited to 'drivers/video/console/fbcon.c')
-rw-r--r--drivers/video/console/fbcon.c114
1 files changed, 36 insertions, 78 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 0fc8bb499c3..3cf1b61ff1f 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -281,6 +281,18 @@ static inline 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(void *private)
{
struct fb_info *info = private;
@@ -618,6 +630,15 @@ static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
kfree(oldinfo->fbcon_par);
oldinfo->fbcon_par = NULL;
module_put(oldinfo->fbops->owner);
+ /*
+ If oldinfo and newinfo are driving the same hardware,
+ the fb_release() method of oldinfo may attempt to
+ restore the hardware state. This will leave the
+ newinfo in an undefined state. Thus, a call to
+ fb_set_par() may be needed for the newinfo.
+ */
+ if (newinfo->fbops->fb_set_par)
+ newinfo->fbops->fb_set_par(newinfo);
}
return err;
@@ -1007,16 +1028,8 @@ 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) {
- 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;
- }
- }
+ if (vc == svc && softback_buf)
+ fbcon_update_softback(vc);
}
static void fbcon_deinit(struct vc_data *vc)
@@ -1223,18 +1236,8 @@ static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
vc_resize(vc, cols, rows);
if (CON_IS_VISIBLE(vc)) {
update_screen(vc);
- if (softback_buf) {
- 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;
- }
- }
+ if (softback_buf)
+ fbcon_update_softback(vc);
}
}
@@ -1892,24 +1895,11 @@ static int fbcon_resize(struct vc_data *vc, unsigned int width,
mode = fb_find_best_mode(&var, &info->modelist);
if (mode == NULL)
return -EINVAL;
+ display_to_var(&var, p);
fb_videomode_to_var(&var, mode);
+
if (width > var.xres/fw || height > var.yres/fh)
return -EINVAL;
- /*
- * The following can probably have any value... Do we need to
- * set all of them?
- */
- var.bits_per_pixel = p->bits_per_pixel;
- var.xres_virtual = p->xres_virtual;
- var.yres_virtual = p->yres_virtual;
- var.accel_flags = p->accel_flags;
- var.width = p->width;
- var.height = p->height;
- var.red = p->red;
- var.green = p->green;
- var.blue = p->blue;
- var.transp = p->transp;
- var.nonstd = p->nonstd;
DPRINTK("resize now %ix%i\n", var.xres, var.yres);
if (CON_IS_VISIBLE(vc)) {
@@ -1933,19 +1923,11 @@ static int fbcon_switch(struct vc_data *vc)
info = registered_fb[con2fb_map[vc->vc_num]];
if (softback_top) {
- int l = fbcon_softback_size / vc->vc_size_row;
if (softback_lines)
fbcon_set_origin(vc);
softback_top = softback_curr = softback_in = softback_buf;
softback_lines = 0;
-
- 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;
- }
+ fbcon_update_softback(vc);
}
if (logo_shown >= 0) {
@@ -2235,17 +2217,8 @@ static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
/* reset wrap/pan */
info->var.xoffset = info->var.yoffset = p->yscroll = 0;
vc_resize(vc, info->var.xres / w, info->var.yres / h);
- if (CON_IS_VISIBLE(vc) && softback_buf) {
- 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;
- }
- }
+ 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);
@@ -2615,16 +2588,8 @@ static void fbcon_modechanged(struct fb_info *info)
update_var(vc->vc_num, info);
fbcon_set_palette(vc, color_table);
update_screen(vc);
- if (softback_buf) {
- 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;
- }
- }
+ if (softback_buf)
+ fbcon_update_softback(vc);
}
}
@@ -2659,16 +2624,8 @@ static void fbcon_set_all_vcs(struct fb_info *info)
update_var(vc->vc_num, info);
fbcon_set_palette(vc, color_table);
update_screen(vc);
- if (softback_buf) {
- 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;
- }
- }
+ if (softback_buf)
+ fbcon_update_softback(vc);
}
}
}
@@ -2758,7 +2715,8 @@ static void fbcon_new_modelist(struct fb_info *info)
continue;
vc = vc_cons[i].d;
display_to_var(&var, &fb_display[i]);
- mode = fb_find_nearest_mode(&var, &info->modelist);
+ mode = fb_find_nearest_mode(fb_display[i].mode,
+ &info->modelist);
fb_videomode_to_var(&var, mode);
if (vc)
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-09 16:52:49 +0000