ps3fb: Set FBINFO_READS_FAST to speed up text console scrolling

[safe/jmp/linux-2.6] / drivers / video / neofb.c

diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c
index 459ca55..731d7a5 100644 (file)
--- a/drivers/video/neofb.c
+++ b/drivers/video/neofb.c
@@ -556,14 +556,16 @@ static int
 neofb_open(struct fb_info *info, int user)
 {
        struct neofb_par *par = info->par;
-       int cnt = atomic_read(&par->ref_count);
 
-       if (!cnt) {
+       mutex_lock(&par->open_lock);
+       if (!par->ref_count) {
                memset(&par->state, 0, sizeof(struct vgastate));
                par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS;
                save_vga(&par->state);
        }
-       atomic_inc(&par->ref_count);
+       par->ref_count++;
+       mutex_unlock(&par->open_lock);
+
        return 0;
 }
 
@@ -571,14 +573,18 @@ static int
 neofb_release(struct fb_info *info, int user)
 {
        struct neofb_par *par = info->par;
-       int cnt = atomic_read(&par->ref_count);
 
-       if (!cnt)
+       mutex_lock(&par->open_lock);
+       if (!par->ref_count) {
+               mutex_unlock(&par->open_lock);
                return -EINVAL;
-       if (cnt == 1) {
+       }
+       if (par->ref_count == 1) {
                restore_vga(&par->state);
        }
-       atomic_dec(&par->ref_count);
+       par->ref_count--;
+       mutex_unlock(&par->open_lock);
+
        return 0;
 }
 
@@ -659,6 +665,7 @@ neofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
        var->red.msb_right = 0;
        var->green.msb_right = 0;
        var->blue.msb_right = 0;
+       var->transp.msb_right = 0;
 
        switch (var->bits_per_pixel) {
        case 8:         /* PSEUDOCOLOUR, 256 */
@@ -1279,34 +1286,36 @@ static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
        if (regno >= fb->cmap.len || regno > 255)
                return -EINVAL;
 
-       switch (fb->var.bits_per_pixel) {
-       case 8:
+       if (fb->var.bits_per_pixel <= 8) {
                outb(regno, 0x3c8);
 
                outb(red >> 10, 0x3c9);
                outb(green >> 10, 0x3c9);
                outb(blue >> 10, 0x3c9);
-               break;
-       case 16:
-               ((u32 *) fb->pseudo_palette)[regno] =
+       } else if (regno < 16) {
+               switch (fb->var.bits_per_pixel) {
+               case 16:
+                       ((u32 *) fb->pseudo_palette)[regno] =
                                ((red & 0xf800)) | ((green & 0xfc00) >> 5) |
                                ((blue & 0xf800) >> 11);
-               break;
-       case 24:
-               ((u32 *) fb->pseudo_palette)[regno] =
+                       break;
+               case 24:
+                       ((u32 *) fb->pseudo_palette)[regno] =
                                ((red & 0xff00) << 8) | ((green & 0xff00)) |
                                ((blue & 0xff00) >> 8);
-               break;
+                       break;
 #ifdef NO_32BIT_SUPPORT_YET
-       case 32:
-               ((u32 *) fb->pseudo_palette)[regno] =
+               case 32:
+                       ((u32 *) fb->pseudo_palette)[regno] =
                                ((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
                                ((green & 0xff00)) | ((blue & 0xff00) >> 8);
-               break;
+                       break;
 #endif
-       default:
-               return 1;
+               default:
+                       return 1;
+               }
        }
+
        return 0;
 }
 
@@ -2047,6 +2056,7 @@ static struct fb_info *__devinit neo_alloc_fb_info(struct pci_dev *dev, const st
 
        info->fix.accel = id->driver_data;
 
+       mutex_init(&par->open_lock);
        par->pci_burst = !nopciburst;
        par->lcd_stretch = !nostretch;
        par->libretto = libretto;