hw/tc6393xb_template.h

   1 /*
   2  * Toshiba TC6393XB I/O Controller.
   3  * Found in Sharp Zaurus SL-6000 (tosa) or some
   4  * Toshiba e-Series PDAs.
   5  *
   6  * FB support code. Based on G364 fb emulator
   7  *
   8  * Copyright (c) 2007 Hervé Poussineau
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #if BITS == 8
  27 # define SET_PIXEL(addr, color) *(uint8_t*)addr = color;
  28 #elif BITS == 15 || BITS == 16
  29 # define SET_PIXEL(addr, color) *(uint16_t*)addr = color;
  30 #elif BITS == 24
  31 # define SET_PIXEL(addr, color) \
  32     addr[0] = color; addr[1] = (color) >> 8; addr[2] = (color) >> 16;
  33 #elif BITS == 32
  34 # define SET_PIXEL(addr, color) *(uint32_t*)addr = color;
  35 #else
  36 # error unknown bit depth
  37 #endif
  38
  39
  40 static void glue(tc6393xb_draw_graphic, BITS)(struct tc6393xb_s *s)
  41 {
  42     int i;
  43     int w_display;
  44     uint16_t *data_buffer;
  45     uint8_t *data_display;
  46
  47     data_buffer = (uint16_t*)(phys_ram_base + s->vram_addr);
  48     w_display = s->scr_width * BITS / 8;
  49     data_display = s->ds->data;
  50     for(i = 0; i < s->scr_height; i++) {
  51 #if (BITS == 16)
  52         memcpy(data_display, data_buffer, s->scr_width * 2);
  53         data_buffer += s->scr_width;
  54         data_display += s->ds->linesize;
  55 #else
  56         int j;
  57         for (j = 0; j < s->scr_width; j++, data_display += BITS / 8, data_buffer++) {
  58             uint16_t color = *data_buffer;
  59             uint32_t dest_color = glue(rgb_to_pixel, BITS)(
  60                            ((color & 0xf800) * 0x108) >> 11,
  61                            ((color & 0x7e0) * 0x41) >> 9,
  62                            ((color & 0x1f) * 0x21) >> 2
  63                            );
  64             SET_PIXEL(data_display, dest_color);
  65         }
  66 #endif
  67     }
  68 }
  69
  70 #undef BITS
  71 #undef SET_PIXEL
  72