/*-*- linux-c -*-
 *  linux/drivers/video/savage/savage_accel.c -- Hardware Acceleration
 *
 *      Copyright (C) 2004 Antonino Daplas<adaplas@pol.net>
 *      All Rights Reserved
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive for
 *  more details.
 */
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/fb.h>
#include <linux/module.h>

#include "savagefb.h"

static u32 savagefb_rop[] = {
        0xCC, /* ROP_COPY */
        0x5A  /* ROP_XOR  */
};

int savagefb_sync(struct fb_info *info)
{
        struct savagefb_par *par = info->par;

        par->SavageWaitIdle(par);
        return 0;
}

void savagefb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
{
        struct savagefb_par *par = info->par;
        int sx = region->sx, dx = region->dx;
        int sy = region->sy, dy = region->dy;
        int cmd;

        if (!region->width || !region->height)
                return;
        par->bci_ptr = 0;
        cmd = BCI_CMD_RECT | BCI_CMD_DEST_GBD | BCI_CMD_SRC_GBD;
        BCI_CMD_SET_ROP(cmd, savagefb_rop[0]);

        if (dx <= sx) {
                cmd |= BCI_CMD_RECT_XP;
        } else {
                sx += region->width - 1;
                dx += region->width - 1;
        }

        if (dy <= sy) {
                cmd |= BCI_CMD_RECT_YP;
        } else {
                sy += region->height - 1;
                dy += region->height - 1;
        }

        par->SavageWaitFifo(par,4);
        BCI_SEND(cmd);
        BCI_SEND(BCI_X_Y(sx, sy));
        BCI_SEND(BCI_X_Y(dx, dy));
        BCI_SEND(BCI_W_H(region->width, region->height));
}

void savagefb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
        struct savagefb_par *par = info->par;
        int cmd, color;

        if (!rect->width || !rect->height)
                return;

        if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
                color = rect->color;
        else
                color = ((u32 *)info->pseudo_palette)[rect->color];

        cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
              BCI_CMD_DEST_GBD | BCI_CMD_SRC_SOLID |
              BCI_CMD_SEND_COLOR;

        par->bci_ptr = 0;
        BCI_CMD_SET_ROP(cmd, savagefb_rop[rect->rop]);

        par->SavageWaitFifo(par,4);
        BCI_SEND(cmd);
        BCI_SEND(color);
        BCI_SEND( BCI_X_Y(rect->dx, rect->dy) );
        BCI_SEND( BCI_W_H(rect->width, rect->height) );
}

void savagefb_imageblit(struct fb_info *info, const struct fb_image *image)
{
        struct savagefb_par *par = info->par;
        int fg, bg, size, i, width;
        int cmd;
        u32 *src = (u32 *) image->data;

        if (!image->width || !image->height)
                return;

        if (image->depth != 1) {
                cfb_imageblit(info, image);
                return;
        }

        if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
                fg = image->fg_color;
                bg = image->bg_color;
        } else {
                fg = ((u32 *)info->pseudo_palette)[image->fg_color];
                bg = ((u32 *)info->pseudo_palette)[image->bg_color];
        }

        cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
              BCI_CMD_CLIP_LR | BCI_CMD_DEST_GBD | BCI_CMD_SRC_MONO |
              BCI_CMD_SEND_COLOR;

        par->bci_ptr = 0;
        BCI_CMD_SET_ROP(cmd, savagefb_rop[0]);

        width = (image->width + 31) & ~31;
        size = (width * image->height)/8;
        size >>= 2;

        par->SavageWaitFifo(par, size + 5);
        BCI_SEND(cmd);
        BCI_SEND(BCI_CLIP_LR(image->dx, image->dx + image->width - 1));
        BCI_SEND(fg);
        BCI_SEND(bg);
        BCI_SEND(BCI_X_Y(image->dx, image->dy));
        BCI_SEND(BCI_W_H(width, image->height));
        for (i = 0; i < size; i++)
                BCI_SEND(src[i]);
}

MODULE_LICENSE("GPL");