pm3fb: copyarea and partial imageblit suppor

This patch adds accelerated copyarea and partially accelerated imageblit
functions. There is also fixed one register address in the pm3fb.h file.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 169 insertions, 11 deletions

diff --git a/drivers/video/pm3fb.c b/drivers/video/pm3fb.c
index 5b3f54c0918e..438872a5f43f 100644
--- a/drivers/video/pm3fb.c
+++ b/drivers/video/pm3fb.c
@@ -276,15 +276,22 @@ static void pm3fb_init_engine(struct fb_info *info)
 
         PM3_WAIT(par, 2);
         {
-                unsigned long rm = 1;
+                /* invert bits in bitmask */
+                unsigned long rm = 1 | (3 << 7);
                 switch (info->var.bits_per_pixel) {
                 case 8:
                         PM3_WRITE_REG(par, PM3PixelSize,
                                            PM3PixelSize_GLOBAL_8BIT);
+#ifdef __BIG_ENDIAN
+                        rm |= 3 << 15;
+#endif
                         break;
                 case 16:
                         PM3_WRITE_REG(par, PM3PixelSize,
                                            PM3PixelSize_GLOBAL_16BIT);
+#ifdef __BIG_ENDIAN
+                        rm |= 2 << 15;
+#endif
                         break;
                 case 32:
                         PM3_WRITE_REG(par, PM3PixelSize,
@@ -394,18 +401,18 @@ static void pm3fb_fillrect (struct fb_info *info,
                 color |= color << 16;
 
         PM3_WAIT(par, 4);
-
+        /* ROP Ox3 is GXcopy */
         PM3_WRITE_REG(par, PM3Config2D,
-                                  PM3Config2D_UseConstantSource |
-                                  PM3Config2D_ForegroundROPEnable |
-                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
-                                  PM3Config2D_FBWriteEnable);
+                        PM3Config2D_UseConstantSource |
+                        PM3Config2D_ForegroundROPEnable |
+                        (PM3Config2D_ForegroundROP(0x3)) |
+                        PM3Config2D_FBWriteEnable);
 
         PM3_WRITE_REG(par, PM3ForegroundColor, color);
 
         PM3_WRITE_REG(par, PM3RectanglePosition,
-                      (PM3RectanglePosition_XOffset(modded.dx)) |
-                      (PM3RectanglePosition_YOffset(modded.dy)));
+                        (PM3RectanglePosition_XOffset(modded.dx)) |
+                        (PM3RectanglePosition_YOffset(modded.dy)));
 
         PM3_WRITE_REG(par, PM3Render2D,
                       PM3Render2D_XPositive |
@@ -415,6 +422,154 @@ static void pm3fb_fillrect (struct fb_info *info,
                       (PM3Render2D_Width(modded.width)) |
                       (PM3Render2D_Height(modded.height)));
 }
+
+static void pm3fb_copyarea(struct fb_info *info,
+                                const struct fb_copyarea *area)
+{
+        struct pm3_par *par = info->par;
+        struct fb_copyarea modded;
+        u32 vxres, vyres;
+        int x_align, o_x, o_y;
+
+        if (info->state != FBINFO_STATE_RUNNING)
+                return;
+        if (info->flags & FBINFO_HWACCEL_DISABLED) {
+                cfb_copyarea(info, area);
+                return;
+        }
+
+        memcpy(&modded, area, sizeof(struct fb_copyarea));
+
+        vxres = info->var.xres_virtual;
+        vyres = info->var.yres_virtual;
+
+        if(!modded.width || !modded.height ||
+           modded.sx >= vxres || modded.sy >= vyres ||
+           modded.dx >= vxres || modded.dy >= vyres)
+                return;
+
+        if(modded.sx + modded.width > vxres)
+                modded.width = vxres - modded.sx;
+        if(modded.dx + modded.width > vxres)
+                modded.width = vxres - modded.dx;
+        if(modded.sy + modded.height > vyres)
+                modded.height = vyres - modded.sy;
+        if(modded.dy + modded.height > vyres)
+                modded.height = vyres - modded.dy;
+
+        o_x = modded.sx - modded.dx;    /*(sx > dx ) ? (sx - dx) : (dx - sx); */
+        o_y = modded.sy - modded.dy;    /*(sy > dy ) ? (sy - dy) : (dy - sy); */
+
+        x_align = (modded.sx & 0x1f);
+
+        PM3_WAIT(par, 6);
+
+        PM3_WRITE_REG(par, PM3Config2D,
+                        PM3Config2D_UserScissorEnable |
+                        PM3Config2D_ForegroundROPEnable |
+                        PM3Config2D_Blocking |
+                        (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
+                        PM3Config2D_FBWriteEnable);
+
+        PM3_WRITE_REG(par, PM3ScissorMinXY,
+                        ((modded.dy & 0x0fff) << 16) | (modded.dx & 0x0fff));
+        PM3_WRITE_REG(par, PM3ScissorMaxXY,
+                        (((modded.dy + modded.height) & 0x0fff) << 16) |
+                        ((modded.dx + modded.width) & 0x0fff));
+
+        PM3_WRITE_REG(par, PM3FBSourceReadBufferOffset,
+                        PM3FBSourceReadBufferOffset_XOffset(o_x) |
+                        PM3FBSourceReadBufferOffset_YOffset(o_y));
+
+        PM3_WRITE_REG(par, PM3RectanglePosition,
+                        (PM3RectanglePosition_XOffset(modded.dx - x_align)) |
+                        (PM3RectanglePosition_YOffset(modded.dy)));
+
+        PM3_WRITE_REG(par, PM3Render2D,
+                        ((modded.sx > modded.dx) ? PM3Render2D_XPositive : 0) |
+                        ((modded.sy > modded.dy) ? PM3Render2D_YPositive : 0) |
+                        PM3Render2D_Operation_Normal |
+                        PM3Render2D_SpanOperation |
+                        PM3Render2D_FBSourceReadEnable |
+                        (PM3Render2D_Width(modded.width + x_align)) |
+                        (PM3Render2D_Height(modded.height)));
+}
+
+static void pm3fb_imageblit(struct fb_info *info, const struct fb_image *image)
+{
+        struct pm3_par *par = info->par;
+        u32 height = image->height;
+        u32 fgx, bgx;
+        const u32 *src = (const u32*)image->data;
+
+        switch (info->fix.visual) {
+                case FB_VISUAL_PSEUDOCOLOR:
+                        fgx = image->fg_color;
+                        bgx = image->bg_color;
+                        break;
+                case FB_VISUAL_TRUECOLOR:
+                default:
+                        fgx = par->palette[image->fg_color];
+                        bgx = par->palette[image->bg_color];
+                        break;
+        }
+        if (image->depth != 1 || (image->width & 0x1f)) {
+                return cfb_imageblit(info, image);
+        }
+        if (info->var.bits_per_pixel == 8) {
+                fgx |= fgx << 8;
+                bgx |= bgx << 8;
+        }
+        if (info->var.bits_per_pixel <= 16) {
+                fgx |= fgx << 16;
+                bgx |= bgx << 16;
+        }
+
+        PM3_WAIT(par, 5);
+
+        PM3_WRITE_REG(par, PM3ForegroundColor, fgx);
+        PM3_WRITE_REG(par, PM3BackgroundColor, bgx);
+
+        /* ROP Ox3 is GXcopy */
+        PM3_WRITE_REG(par, PM3Config2D,
+                        PM3Config2D_UseConstantSource |
+                        PM3Config2D_ForegroundROPEnable |
+                        (PM3Config2D_ForegroundROP(0x3)) |
+                        PM3Config2D_OpaqueSpan |
+                        PM3Config2D_FBWriteEnable);
+        PM3_WRITE_REG(par, PM3RectanglePosition,
+                        (PM3RectanglePosition_XOffset(image->dx)) |
+                        (PM3RectanglePosition_YOffset(image->dy)));
+        PM3_WRITE_REG(par, PM3Render2D,
+                        PM3Render2D_XPositive |
+                        PM3Render2D_YPositive |
+                        PM3Render2D_Operation_SyncOnBitMask |
+                        PM3Render2D_SpanOperation |
+                        (PM3Render2D_Width(image->width)) |
+                        (PM3Render2D_Height(image->height)));
+
+
+        while (height--) {
+                u32 width = (image->width + 31) >> 5;
+
+                while (width >= PM3_FIFO_SIZE) {
+                        int i = PM3_FIFO_SIZE - 1;
+
+                        PM3_WAIT(par, PM3_FIFO_SIZE);
+                        while (i--) {
+                                PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
+                                src++;
+                        }
+                        width -= PM3_FIFO_SIZE - 1;
+                }
+
+                PM3_WAIT(par, width + 1);
+                while (width--) {
+                        PM3_WRITE_REG(par, PM3BitMaskPattern, *src);
+                        src++;
+                }
+        }
+}
 /* end of acceleration functions */
 
 /* write the mode to registers */
@@ -907,8 +1062,8 @@ static struct fb_ops pm3fb_ops = {
         .fb_setcolreg   = pm3fb_setcolreg,
         .fb_pan_display = pm3fb_pan_display,
         .fb_fillrect    = pm3fb_fillrect,
-        .fb_copyarea    = cfb_copyarea,
-        .fb_imageblit   = cfb_imageblit,
+        .fb_copyarea    = pm3fb_copyarea,
+        .fb_imageblit   = pm3fb_imageblit,
         .fb_blank       = pm3fb_blank,
         .fb_sync        = pm3fb_sync,
 };
@@ -1080,7 +1235,10 @@ static int __devinit pm3fb_probe(struct pci_dev *dev,
         info->fix = pm3fb_fix;
         info->pseudo_palette = par->palette;
         info->flags = FBINFO_DEFAULT |
-                        FBINFO_HWACCEL_FILLRECT;/* | FBINFO_HWACCEL_YPAN;*/
+/*                      FBINFO_HWACCEL_YPAN |*/
+                        FBINFO_HWACCEL_COPYAREA |
+                        FBINFO_HWACCEL_IMAGEBLIT |
+                        FBINFO_HWACCEL_FILLRECT;
 
         /*
          * This should give a reasonable default video mode. The following is