patch-2.3.51 linux/drivers/video/fbcon.c

• Lines: 205
• Date: Wed Mar 8 14:00:08 2000
• Orig file: v2.3.50/linux/drivers/video/fbcon.c
• Orig date: Tue Mar 7 14:32:26 2000

diff -u --recursive --new-file v2.3.50/linux/drivers/video/fbcon.c linux/drivers/video/fbcon.c
@@ -111,6 +111,10 @@
 #define LOGO_W			80
 #define LOGO_LINE	(LOGO_W/8)
 
+static int first_fb_vc = 0;
+static int last_fb_vc = MAX_NR_CONSOLES-1;
+static int fbcon_is_default = 1;
+
 struct display fb_display[MAX_NR_CONSOLES];
 char con2fb_map[MAX_NR_CONSOLES];
 static int logo_lines;
@@ -128,6 +132,8 @@
 #define FNTSUM(fd)	(((int *)(fd))[-4])
 #define FONT_EXTRA_WORDS 4
 
+static char fontname[40] __initdata = { 0 };     /* default font name */
+
 #define CM_SOFTBACK	(8)
 
 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * conp->vc_size_row)
@@ -197,7 +203,8 @@
  *  Internal routines
  */
 
-static void fbcon_setup(int con, int init, int logo);
+static int __init fbcon_setup(char *options);
+static void fbcon_set_disp(int con, int init, int logo);
 static __inline__ int real_y(struct display *p, int ypos);
 static void fbcon_vbl_handler(int irq, void *dummy, struct pt_regs *fp);
 static __inline__ void updatescrollmode(struct display *p);
@@ -293,6 +300,8 @@
        newfb = registered_fb[newidx];
        if (newfb->fbops->fb_open(newfb,0))
            return;
+       newfb->count++;
+       oldfb->count--;		
        oldfb->fbops->fb_release(oldfb,0);
        conp = fb_display[unit].conp;
        fontdata = fb_display[unit].fontdata;
@@ -323,6 +332,57 @@
    }
 }
 
+static int __init fbcon_setup(char *options)
+{
+    int i, j;
+
+    if (!options || !*options)
+            return 0;
+
+    if (!strncmp(options, "font:", 5))
+        strcpy(fontname, options+5);
+
+    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;
+                        options++;
+                }
+                if (*options != ',')
+                        return 0;
+                options++;
+            } else
+                return 0;
+    }
+
+    if (!strncmp(options, "map:", 4)) {
+            options += 4;
+            if (*options)
+                    for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
+                            if (!options[j])
+                                    j = 0;
+                            con2fb_map[i] = (options[j++]-'0') % FB_MAX;
+                    }
+            return 0;
+    }
+
+    if (!strncmp(options, "vc:", 3)) {
+            options += 3;
+            if (*options)
+                first_fb_vc = simple_strtoul(options, &options, 10) - 1;
+            if (first_fb_vc < 0)
+                first_fb_vc = 0;
+            if (*options++ == '-')
+                last_fb_vc = simple_strtoul(options, &options, 10) - 1;
+            fbcon_is_default = 0;
+    }
+    return 0;
+}
+
+__setup("fbcon=", fbcon_setup);
+
 /*
  *  Low Level Operations
  */
@@ -419,15 +479,23 @@
     return display_desc;
 }
 
-
 static void fbcon_init(struct vc_data *conp, int init)
 {
-    int unit = conp->vc_num;
+    int j, unit = conp->vc_num;
     struct fb_info *info;
-
+	
     /* on which frame buffer will we open this console? */
     info = registered_fb[(int)con2fb_map[unit]];
 
+    /*
+     *  We assume initial frame buffer devices can be opened this
+     *  many times
+     */
+    for (j = 0; j < (last_fb_vc - first_fb_vc + 1); j++) {
+        info->fbops->fb_open(info,0);
+	info->count++;	
+    } 	
+
     info->changevar = &fbcon_changevar;
     fb_display[unit] = *(info->disp);	/* copy from default */
     DPRINTK("mode:   %s\n",info->modename);
@@ -443,8 +511,8 @@
     fb_display[unit].cmap.green = 0;
     fb_display[unit].cmap.blue = 0;
     fb_display[unit].cmap.transp = 0;
-    fbcon_setup(unit, init, !init);
-    /* Must be done after fbcon_setup to prevent excess updates */
+    fbcon_set_disp(unit, init, !init);
+    /* Must be done after fbcon_set_disp to prevent excess updates */
     conp->vc_display_fg = &info->display_fg;
     if (!info->display_fg)
         info->display_fg = conp;
@@ -458,6 +526,7 @@
 
     fbcon_free_font(p);
     p->dispsw = &fbcon_dummy;
+    p->fb_info->count = 0;	
     p->conp = 0;
 }
 
@@ -465,7 +534,7 @@
 static int fbcon_changevar(int con)
 {
     if (fb_display[con].conp)
-	    fbcon_setup(con, 0, 0);
+	    fbcon_set_disp(con, 0, 0);
     return 0;
 }
 
@@ -504,7 +573,7 @@
 
 #define fontwidthvalid(p,w) ((p)->dispsw->fontwidthmask & FONTWIDTH(w))
 
-static void fbcon_setup(int con, int init, int logo)
+static void fbcon_set_disp(int con, int init, int logo)
 {
     struct display *p = &fb_display[con];
     struct vc_data *conp = p->conp;
@@ -568,9 +637,8 @@
     }
 
     if (!p->fontdata) {
-        if (!p->fb_info->fontname[0] ||
-	    !(font = fbcon_find_font(p->fb_info->fontname)))
-	        font = fbcon_get_default_font(p->var.xres, p->var.yres);
+        if (!fontname[0] || !(font = fbcon_find_font(fontname)))
+	    font = fbcon_get_default_font(p->var.xres, p->var.yres);
         p->_fontwidth = font->width;
         p->_fontheight = font->height;
         p->fontdata = font->data;
@@ -586,7 +654,7 @@
 #endif
 	{
 	    /* ++Geert: changed from panic() to `correct and continue' */
-	    printk(KERN_ERR "fbcon_setup: No support for fontwidth %d\n", fontwidth(p));
+	    printk(KERN_ERR "fbcon_set_disp: No support for fontwidth %d\n", fontwidth(p));
 	    p->dispsw = &fbcon_dummy;
 	}
     }
@@ -669,7 +737,7 @@
     }
 
     if (p->dispsw == &fbcon_dummy)
-	printk(KERN_WARNING "fbcon_setup: type %d (aux %d, depth %d) not "
+	printk(KERN_WARNING "fbcon_set_disp: type %d (aux %d, depth %d) not "
 	       "supported\n", p->type, p->type_aux, p->var.bits_per_pixel);
     p->dispsw->setup(p);
 
@@ -2394,6 +2462,13 @@
     con_getxy:		fbcon_getxy,
 };
 
+void __init fbconsole_init(void)
+{
+	if (!num_registered_fb || (first_fb_vc > last_fb_vc))
+                return;
+
+	take_over_console(&fb_con, first_fb_vc, last_fb_vc, fbcon_is_default);
+}
 
 /*
  *  Dummy Low Level Operations