1 files changed, 335 insertions, 0 deletions

diff --git a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
new file mode 100644
index 000000000000..fe92eed6da70
--- /dev/null
+++ b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
@@ -0,0 +1,335 @@
+/*
+ * drivers/mb862xx/mb862xxfb_accel.c
+ *
+ * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver acceleration support
+ *
+ * (C) 2007 Alexander Shishkin <virtuoso@slind.org>
+ * (C) 2009 Valentin Sitdikov <v.sitdikov@gmail.com>
+ * (C) 2009 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#if defined(CONFIG_OF)
+#include <linux/of_platform.h>
+#endif
+#include "mb862xxfb.h"
+#include "mb862xx_reg.h"
+#include "mb862xxfb_accel.h"
+
+static void mb862xxfb_write_fifo(u32 count, u32 *data, struct fb_info *info)
+{
+        struct mb862xxfb_par *par = info->par;
+        static u32 free;
+
+        u32 total = 0;
+        while (total < count) {
+                if (free) {
+                        outreg(geo, GDC_GEO_REG_INPUT_FIFO, data[total]);
+                        total++;
+                        free--;
+                } else {
+                        free = (u32) inreg(draw, GDC_REG_FIFO_COUNT);
+                }
+        }
+}
+
+static void mb86290fb_copyarea(struct fb_info *info,
+                               const struct fb_copyarea *area)
+{
+        __u32 cmd[6];
+
+        cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
+        /* Set raster operation */
+        cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
+        cmd[2] = GDC_TYPE_BLTCOPYP << 24;
+
+        if (area->sx >= area->dx && area->sy >= area->dy)
+                cmd[2] |= GDC_CMD_BLTCOPY_TOP_LEFT << 16;
+        else if (area->sx >= area->dx && area->sy <= area->dy)
+                cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_LEFT << 16;
+        else if (area->sx <= area->dx && area->sy >= area->dy)
+                cmd[2] |= GDC_CMD_BLTCOPY_TOP_RIGHT << 16;
+        else
+                cmd[2] |= GDC_CMD_BLTCOPY_BOTTOM_RIGHT << 16;
+
+        cmd[3] = (area->sy << 16) | area->sx;
+        cmd[4] = (area->dy << 16) | area->dx;
+        cmd[5] = (area->height << 16) | area->width;
+        mb862xxfb_write_fifo(6, cmd, info);
+}
+
+/*
+ * Fill in the cmd array /GDC FIFO commands/ to draw a 1bit image.
+ * Make sure cmd has enough room!
+ */
+static void mb86290fb_imageblit1(u32 *cmd, u16 step, u16 dx, u16 dy,
+                                 u16 width, u16 height, u32 fgcolor,
+                                 u32 bgcolor, const struct fb_image *image,
+                                 struct fb_info *info)
+{
+        int i;
+        unsigned const char *line;
+        u16 bytes;
+
+        /* set colors and raster operation regs */
+        cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
+        /* Set raster operation */
+        cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
+        cmd[2] =
+            (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
+        cmd[3] = fgcolor;
+        cmd[4] =
+            (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_BACK_COLOR << 16);
+        cmd[5] = bgcolor;
+
+        i = 0;
+        line = image->data;
+        bytes = (image->width + 7) >> 3;
+
+        /* and the image */
+        cmd[6] = (GDC_TYPE_DRAWBITMAPP << 24) |
+            (GDC_CMD_BITMAP << 16) | (2 + (step * height));
+        cmd[7] = (dy << 16) | dx;
+        cmd[8] = (height << 16) | width;
+
+        while (i < height) {
+                memcpy(&cmd[9 + i * step], line, step << 2);
+#ifdef __LITTLE_ENDIAN
+                {
+                        int k = 0;
+                        for (k = 0; k < step; k++)
+                                cmd[9 + i * step + k] =
+                                    cpu_to_be32(cmd[9 + i * step + k]);
+                }
+#endif
+                line += bytes;
+                i++;
+        }
+}
+
+/*
+ * Fill in the cmd array /GDC FIFO commands/ to draw a 8bit image.
+ * Make sure cmd has enough room!
+ */
+static void mb86290fb_imageblit8(u32 *cmd, u16 step, u16 dx, u16 dy,
+                                 u16 width, u16 height, u32 fgcolor,
+                                 u32 bgcolor, const struct fb_image *image,
+                                 struct fb_info *info)
+{
+        int i, j;
+        unsigned const char *line, *ptr;
+        u16 bytes;
+
+        cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
+            (GDC_CMD_BLT_DRAW << 16) | (2 + (height * step));
+        cmd[1] = (dy << 16) | dx;
+        cmd[2] = (height << 16) | width;
+
+        i = 0;
+        line = ptr = image->data;
+        bytes = image->width;
+
+        while (i < height) {
+                ptr = line;
+                for (j = 0; j < step; j++) {
+                        cmd[3 + i * step + j] =
+                            (((u32 *) (info->pseudo_palette))[*ptr]) & 0xffff;
+                        ptr++;
+                        cmd[3 + i * step + j] |=
+                            ((((u32 *) (info->
+                                        pseudo_palette))[*ptr]) & 0xffff) << 16;
+                        ptr++;
+                }
+
+                line += bytes;
+                i++;
+        }
+}
+
+/*
+ * Fill in the cmd array /GDC FIFO commands/ to draw a 16bit image.
+ * Make sure cmd has enough room!
+ */
+static void mb86290fb_imageblit16(u32 *cmd, u16 step, u16 dx, u16 dy,
+                                  u16 width, u16 height, u32 fgcolor,
+                                  u32 bgcolor, const struct fb_image *image,
+                                  struct fb_info *info)
+{
+        int i;
+        unsigned const char *line;
+        u16 bytes;
+
+        i = 0;
+        line = image->data;
+        bytes = image->width << 1;
+
+        cmd[0] = (GDC_TYPE_DRAWBITMAPP << 24) |
+            (GDC_CMD_BLT_DRAW << 16) | (2 + step * height);
+        cmd[1] = (dy << 16) | dx;
+        cmd[2] = (height << 16) | width;
+
+        while (i < height) {
+                memcpy(&cmd[3 + i * step], line, step);
+                line += bytes;
+                i++;
+        }
+}
+
+static void mb86290fb_imageblit(struct fb_info *info,
+                                const struct fb_image *image)
+{
+        int mdr;
+        u32 *cmd = NULL;
+        void (*cmdfn) (u32 *, u16, u16, u16, u16, u16, u32, u32,
+                       const struct fb_image *, struct fb_info *) = NULL;
+        u32 cmdlen;
+        u32 fgcolor = 0, bgcolor = 0;
+        u16 step;
+
+        u16 width = image->width, height = image->height;
+        u16 dx = image->dx, dy = image->dy;
+        int x2, y2, vxres, vyres;
+
+        mdr = (GDC_ROP_COPY << 9);
+        x2 = image->dx + image->width;
+        y2 = image->dy + image->height;
+        vxres = info->var.xres_virtual;
+        vyres = info->var.yres_virtual;
+        x2 = min(x2, vxres);
+        y2 = min(y2, vyres);
+        width = x2 - dx;
+        height = y2 - dy;
+
+        switch (image->depth) {
+        case 1:
+                step = (width + 31) >> 5;
+                cmdlen = 9 + height * step;
+                cmdfn = mb86290fb_imageblit1;
+                if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+                    info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+                        fgcolor =
+                            ((u32 *) (info->pseudo_palette))[image->fg_color];
+                        bgcolor =
+                            ((u32 *) (info->pseudo_palette))[image->bg_color];
+                } else {
+                        fgcolor = image->fg_color;
+                        bgcolor = image->bg_color;
+                }
+
+                break;
+
+        case 8:
+                step = (width + 1) >> 1;
+                cmdlen = 3 + height * step;
+                cmdfn = mb86290fb_imageblit8;
+                break;
+
+        case 16:
+                step = (width + 1) >> 1;
+                cmdlen = 3 + height * step;
+                cmdfn = mb86290fb_imageblit16;
+                break;
+
+        default:
+                cfb_imageblit(info, image);
+                return;
+        }
+
+        cmd = kmalloc(cmdlen * 4, GFP_DMA);
+        if (!cmd)
+                return cfb_imageblit(info, image);
+        cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info);
+        mb862xxfb_write_fifo(cmdlen, cmd, info);
+        kfree(cmd);
+}
+
+static void mb86290fb_fillrect(struct fb_info *info,
+                               const struct fb_fillrect *rect)
+{
+
+        u32 x2, y2, vxres, vyres, height, width, fg;
+        u32 cmd[7];
+
+        vxres = info->var.xres_virtual;
+        vyres = info->var.yres_virtual;
+
+        if (!rect->width || !rect->height || rect->dx > vxres
+            || rect->dy > vyres)
+                return;
+
+        /* We could use hardware clipping but on many cards you get around
+         * hardware clipping by writing to framebuffer directly. */
+        x2 = rect->dx + rect->width;
+        y2 = rect->dy + rect->height;
+        x2 = min(x2, vxres);
+        y2 = min(y2, vyres);
+        width = x2 - rect->dx;
+        height = y2 - rect->dy;
+        if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+            info->fix.visual == FB_VISUAL_DIRECTCOLOR)
+                fg = ((u32 *) (info->pseudo_palette))[rect->color];
+        else
+                fg = rect->color;
+
+        switch (rect->rop) {
+
+        case ROP_XOR:
+                /* Set raster operation */
+                cmd[1] = (2 << 7) | (GDC_ROP_XOR << 9);
+                break;
+
+        case ROP_COPY:
+                /* Set raster operation */
+                cmd[1] = (2 << 7) | (GDC_ROP_COPY << 9);
+                break;
+
+        }
+
+        cmd[0] = (GDC_TYPE_SETREGISTER << 24) | (1 << 16) | GDC_REG_MODE_BITMAP;
+        /* cmd[1] set earlier */
+        cmd[2] =
+            (GDC_TYPE_SETCOLORREGISTER << 24) | (GDC_CMD_BODY_FORE_COLOR << 16);
+        cmd[3] = fg;
+        cmd[4] = (GDC_TYPE_DRAWRECTP << 24) | (GDC_CMD_BLT_FILL << 16);
+        cmd[5] = (rect->dy << 16) | (rect->dx);
+        cmd[6] = (height << 16) | width;
+
+        mb862xxfb_write_fifo(7, cmd, info);
+}
+
+void mb862xxfb_init_accel(struct fb_info *info, int xres)
+{
+        struct mb862xxfb_par *par = info->par;
+
+        if (info->var.bits_per_pixel == 32) {
+                info->fbops->fb_fillrect = cfb_fillrect;
+                info->fbops->fb_copyarea = cfb_copyarea;
+                info->fbops->fb_imageblit = cfb_imageblit;
+        } else {
+                outreg(disp, GC_L0EM, 3);
+                info->fbops->fb_fillrect = mb86290fb_fillrect;
+                info->fbops->fb_copyarea = mb86290fb_copyarea;
+                info->fbops->fb_imageblit = mb86290fb_imageblit;
+        }
+        outreg(draw, GDC_REG_DRAW_BASE, 0);
+        outreg(draw, GDC_REG_MODE_MISC, 0x8000);
+        outreg(draw, GDC_REG_X_RESOLUTION, xres);
+
+        info->flags |=
+            FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
+            FBINFO_HWACCEL_IMAGEBLIT;
+        info->fix.accel = 0xff; /*FIXME: add right define */
+}
+EXPORT_SYMBOL(mb862xxfb_init_accel);
+
+MODULE_LICENSE("GPL v2");