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