+ status = s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0);
+
+ /* its empty so room for 16 words */
+ if (status & BBLT_FIFO_EMPTY)
+ return 16;
+
+ /* its full so we dont want to add */
+ if (status & BBLT_FIFO_FULL)
+ return 0;
+
+ /* its atleast half full but we can add one atleast */
+ if (status & BBLT_FIFO_NOT_FULL)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * s1d13xxxfb_bitblt_copyarea - accelerated copyarea function
+ * @info : framebuffer structure
+ * @area : fb_copyarea structure
+ *
+ * supports (atleast) S1D13506
+ *
+ */
+static void
+s1d13xxxfb_bitblt_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ u32 dst, src;
+ u32 stride;
+ u16 reverse = 0;
+ u16 sx = area->sx, sy = area->sy;
+ u16 dx = area->dx, dy = area->dy;
+ u16 width = area->width, height = area->height;
+ u16 bpp;
+
+ spin_lock(&s1d13xxxfb_bitblt_lock);
+
+ /* bytes per xres line */
+ bpp = (info->var.bits_per_pixel >> 3);
+ stride = bpp * info->var.xres;
+
+ /* reverse, calculate the last pixel in rectangle */
+ if ((dy > sy) || ((dy == sy) && (dx >= sx))) {
+ dst = (((dy + height - 1) * stride) + (bpp * (dx + width - 1)));
+ src = (((sy + height - 1) * stride) + (bpp * (sx + width - 1)));
+ reverse = 1;
+ /* not reverse, calculate the first pixel in rectangle */
+ } else { /* (y * xres) + (bpp * x) */
+ dst = (dy * stride) + (bpp * dx);
+ src = (sy * stride) + (bpp * sx);
+ }
+
+ /* set source adress */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START0, (src & 0xff));
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START1, (src >> 8) & 0x00ff);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_SRC_START2, (src >> 16) & 0x00ff);
+
+ /* set destination adress */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START0, (dst & 0xff));
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START1, (dst >> 8) & 0x00ff);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START2, (dst >> 16) & 0x00ff);
+
+ /* program height and width */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH0, (width & 0xff) - 1);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH1, (width >> 8));
+
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT0, (height & 0xff) - 1);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT1, (height >> 8));
+
+ /* negative direction ROP */
+ if (reverse == 1) {
+ dbg_blit("(copyarea) negative rop\n");
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, 0x03);
+ } else /* positive direction ROP */ {
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, 0x02);
+ dbg_blit("(copyarea) positive rop\n");
+ }
+
+ /* set for rectangel mode and not linear */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x0);
+
+ /* setup the bpp 1 = 16bpp, 0 = 8bpp*/
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL1, (bpp >> 1));
+
+ /* set words per xres */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF0, (stride >> 1) & 0xff);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF1, (stride >> 9));
+
+ dbg_blit("(copyarea) dx=%d, dy=%d\n", dx, dy);
+ dbg_blit("(copyarea) sx=%d, sy=%d\n", sx, sy);
+ dbg_blit("(copyarea) width=%d, height=%d\n", width - 1, height - 1);
+ dbg_blit("(copyarea) stride=%d\n", stride);
+ dbg_blit("(copyarea) bpp=%d=0x0%d, mem_offset1=%d, mem_offset2=%d\n", bpp, (bpp >> 1),
+ (stride >> 1) & 0xff, stride >> 9);
+
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CC_EXP, 0x0c);
+
+ /* initialize the engine */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x80);
+
+ /* wait to complete */
+ bltbit_wait_bitclear(info, 0x80, 8000);
+
+ spin_unlock(&s1d13xxxfb_bitblt_lock);
+}
+
+/**
+ *
+ * s1d13xxxfb_bitblt_solidfill - accelerated solidfill function
+ * @info : framebuffer structure
+ * @rect : fb_fillrect structure
+ *
+ * supports (atleast 13506)
+ *
+ **/
+static void
+s1d13xxxfb_bitblt_solidfill(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ u32 screen_stride, dest;
+ u32 fg;
+ u16 bpp = (info->var.bits_per_pixel >> 3);
+
+ /* grab spinlock */
+ spin_lock(&s1d13xxxfb_bitblt_lock);
+
+ /* bytes per x width */
+ screen_stride = (bpp * info->var.xres);
+
+ /* bytes to starting point */
+ dest = ((rect->dy * screen_stride) + (bpp * rect->dx));
+
+ dbg_blit("(solidfill) dx=%d, dy=%d, stride=%d, dest=%d\n"
+ "(solidfill) : rect_width=%d, rect_height=%d\n",
+ rect->dx, rect->dy, screen_stride, dest,
+ rect->width - 1, rect->height - 1);
+
+ dbg_blit("(solidfill) : xres=%d, yres=%d, bpp=%d\n",
+ info->var.xres, info->var.yres,
+ info->var.bits_per_pixel);
+ dbg_blit("(solidfill) : rop=%d\n", rect->rop);
+
+ /* We split the destination into the three registers */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START0, (dest & 0x00ff));
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START1, ((dest >> 8) & 0x00ff));
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_DST_START2, ((dest >> 16) & 0x00ff));
+
+ /* give information regarding rectangel width */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH0, ((rect->width) & 0x00ff) - 1);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_WIDTH1, (rect->width >> 8));
+
+ /* give information regarding rectangel height */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT0, ((rect->height) & 0x00ff) - 1);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_HEIGHT1, (rect->height >> 8));
+
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ fg = ((u32 *)info->pseudo_palette)[rect->color];
+ dbg_blit("(solidfill) truecolor/directcolor\n");
+ dbg_blit("(solidfill) pseudo_palette[%d] = %d\n", rect->color, fg);
+ } else {
+ fg = rect->color;
+ dbg_blit("(solidfill) color = %d\n", rect->color);
+ }
+
+ /* set foreground color */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_FGC0, (fg & 0xff));
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_FGC1, (fg >> 8) & 0xff);
+
+ /* set rectangual region of memory (rectangle and not linear) */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x0);
+
+ /* set operation mode SOLID_FILL */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_OP, BBLT_SOLID_FILL);
+
+ /* set bits per pixel (1 = 16bpp, 0 = 8bpp) */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL1, (info->var.bits_per_pixel >> 4));
+
+ /* set the memory offset for the bblt in word sizes */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF0, (screen_stride >> 1) & 0x00ff);
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_MEM_OFF1, (screen_stride >> 9));
+
+ /* and away we go.... */
+ s1d13xxxfb_writereg(info->par, S1DREG_BBLT_CTL0, 0x80);
+
+ /* wait until its done */
+ bltbit_wait_bitclear(info, 0x80, 8000);
+
+ /* let others play */
+ spin_unlock(&s1d13xxxfb_bitblt_lock);
+}
+
+/* framebuffer information structures */
git.samba.org / sfrench / cifs-2.6.git / blobdiff