1 files changed, 49 insertions, 17 deletions

diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c
index 3091b20124b4..756fafb41d78 100644
--- a/drivers/video/s3fb.c
+++ b/drivers/video/s3fb.c
@@ -65,7 +65,7 @@ static const struct svga_fb_format s3fb_formats[] = {
 
 
 static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3,
-        60000, 240000, 14318};
+        35000, 240000, 14318};
 
 static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512};
 
@@ -164,7 +164,7 @@ MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, defau
 static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
 {
         const u8 *font = map->data;
-        u8* fb = (u8 *) info->screen_base;
+        u8 __iomem *fb = (u8 __iomem *) info->screen_base;
         int i, c;
 
         if ((map->width != 8) || (map->height != 16) ||
@@ -177,20 +177,19 @@ static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
         fb += 2;
         for (i = 0; i < map->height; i++) {
                 for (c = 0; c < map->length; c++) {
-                        fb[c * 4] = font[c * map->height + i];
+                        fb_writeb(font[c * map->height + i], fb + c * 4);
                 }
                 fb += 1024;
         }
 }
 
-
-
 static struct fb_tile_ops s3fb_tile_ops = {
         .fb_settile     = svga_settile,
         .fb_tilecopy    = svga_tilecopy,
         .fb_tilefill    = svga_tilefill,
         .fb_tileblit    = svga_tileblit,
         .fb_tilecursor  = svga_tilecursor,
+        .fb_get_tilemax = svga_get_tilemax,
 };
 
 static struct fb_tile_ops s3fb_fast_tile_ops = {
@@ -199,6 +198,7 @@ static struct fb_tile_ops s3fb_fast_tile_ops = {
         .fb_tilefill    = svga_tilefill,
         .fb_tileblit    = svga_tileblit,
         .fb_tilecursor  = svga_tilecursor,
+        .fb_get_tilemax = svga_get_tilemax,
 };
 
 
@@ -326,8 +326,13 @@ static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
 {
         u16 m, n, r;
         u8 regval;
+        int rv;
 
-        svga_compute_pll(&s3_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
+        rv = svga_compute_pll(&s3_pll, 1000000000 / pixclock, &m, &n, &r, info->node);
+        if (rv < 0) {
+                printk(KERN_ERR "fb%d: cannot set requested pixclock, keeping old value\n", info->node);
+                return;
+        }
 
         /* Set VGA misc register  */
         regval = vga_r(NULL, VGA_MIS_R);
@@ -449,6 +454,10 @@ static int s3fb_set_par(struct fb_info *info)
                 info->flags &= ~FBINFO_MISC_TILEBLITTING;
                 info->tileops = NULL;
 
+                /* in 4bpp supports 8p wide tiles only, any tiles otherwise */
+                info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0);
+                info->pixmap.blit_y = ~(u32)0;
+
                 offset_value = (info->var.xres_virtual * bpp) / 64;
                 screen_size = info->var.yres_virtual * info->fix.line_length;
         } else {
@@ -458,6 +467,10 @@ static int s3fb_set_par(struct fb_info *info)
                 info->flags |= FBINFO_MISC_TILEBLITTING;
                 info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
 
+                /* supports 8x16 tiles only */
+                info->pixmap.blit_x = 1 << (8 - 1);
+                info->pixmap.blit_y = 1 << (16 - 1);
+
                 offset_value = info->var.xres_virtual / 16;
                 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64;
         }
@@ -656,7 +669,7 @@ static int s3fb_set_par(struct fb_info *info)
         value = ((value * hmul) / 8) - 5;
         vga_wcrt(NULL, 0x3C, (value + 1) / 2);
 
-        memset((u8*)info->screen_base, 0x00, screen_size);
+        memset_io(info->screen_base, 0x00, screen_size);
         /* Device and screen back on */
         svga_wcrt_mask(0x17, 0x80, 0x80);
         svga_wseq_mask(0x01, 0x00, 0x20);
@@ -699,7 +712,7 @@ static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
                 break;
         case 16:
                 if (regno >= 16)
-                        return -EINVAL;
+                        return 0;
 
                 if (fb->var.green.length == 5)
                         ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) |
@@ -712,9 +725,9 @@ static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
         case 24:
         case 32:
                 if (regno >= 16)
-                        return -EINVAL;
+                        return 0;
 
-                ((u32*)fb->pseudo_palette)[regno] = ((transp & 0xFF00) << 16) | ((red & 0xFF00) << 8) |
+                ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) |
                         (green & 0xFF00) | ((blue & 0xFF00) >> 8);
                 break;
         default:
@@ -767,12 +780,6 @@ static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 
         unsigned int offset;
 
-        /* Validate the offsets */
-        if ((var->xoffset + var->xres) > var->xres_virtual)
-                return -EINVAL;
-        if ((var->yoffset + var->yres) > var->yres_virtual)
-                return -EINVAL;
-
         /* Calculate the offset */
         if (var->bits_per_pixel == 0) {
                 offset = (var->yoffset / 16) * (var->xres_virtual / 2) + (var->xoffset / 2);
@@ -789,6 +796,23 @@ static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
         return 0;
 }
 
+/* Get capabilities of accelerator based on the mode */
+
+static void s3fb_get_caps(struct fb_info *info, struct fb_blit_caps *caps,
+                          struct fb_var_screeninfo *var)
+{
+        if (var->bits_per_pixel == 0) {
+                /* can only support 256 8x16 bitmap */
+                caps->x = 1 << (8 - 1);
+                caps->y = 1 << (16 - 1);
+                caps->len = 256;
+        } else {
+                caps->x = ~(u32)0;
+                caps->y = ~(u32)0;
+                caps->len = ~(u32)0;
+        }
+}
+
 /* ------------------------------------------------------------------------- */
 
 /* Frame buffer operations */
@@ -805,6 +829,7 @@ static struct fb_ops s3fb_ops = {
         .fb_fillrect    = s3fb_fillrect,
         .fb_copyarea    = cfb_copyarea,
         .fb_imageblit   = s3fb_imageblit,
+        .fb_get_caps    = s3fb_get_caps,
 };
 
 /* ------------------------------------------------------------------------- */
@@ -1061,6 +1086,7 @@ static int s3_pci_resume(struct pci_dev* dev)
 {
         struct fb_info *info = pci_get_drvdata(dev);
         struct s3fb_info *par = info->par;
+        int err;
 
         dev_info(&(dev->dev), "resume\n");
 
@@ -1075,7 +1101,13 @@ static int s3_pci_resume(struct pci_dev* dev)
 
         pci_set_power_state(dev, PCI_D0);
         pci_restore_state(dev);
-        pci_enable_device(dev);
+        err = pci_enable_device(dev);
+        if (err) {
+                mutex_unlock(&(par->open_lock));
+                release_console_sem();
+                dev_err(&(dev->dev), "error %d enabling device for resume\n", err);
+                return err;
+        }
         pci_set_master(dev);
 
         s3fb_set_par(info);