/*
* 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 <valentin.sitdikov@siemens.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/pci.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);
