LXR uboot/drivers/video/sed13806.c

   1/*
   2 * (C) Copyright 2002
   3 * Stäubli Faverges - <www.staubli.com>
   4 * Pierre AUBERT  p.aubert@staubli.com
   5 *
   6 * See file CREDITS for list of people who contributed to this
   7 * project.
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License as
  11 * published by the Free Software Foundation; either version 2 of
  12 * the License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22 * MA 02111-1307 USA
  23 */
  24/* Video support for Epson SED13806 chipset                                  */
  25
  26#include <common.h>
  27
  28#include <video_fb.h>
  29#include <sed13806.h>
  30
  31#define readByte(ptrReg)                \
  32    *(volatile unsigned char *)(sed13806.isaBase + ptrReg)
  33
  34#define writeByte(ptrReg,value) \
  35    *(volatile unsigned char *)(sed13806.isaBase + ptrReg) = value
  36
  37#ifdef CONFIG_TOTAL5200
  38#define writeWord(ptrReg,value) \
  39    (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = value)
  40#else
  41#define writeWord(ptrReg,value) \
  42    (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = ((value >> 8 ) & 0xff) | ((value << 8) & 0xff00))
  43#endif
  44
  45GraphicDevice sed13806;
  46
  47/*-----------------------------------------------------------------------------
  48 * EpsonSetRegs --
  49 *-----------------------------------------------------------------------------
  50 */
  51static void EpsonSetRegs (void)
  52{
  53    /* the content of the chipset register depends on the board (clocks, ...)*/
  54    const S1D_REGS *preg = board_get_regs ();
  55    while (preg -> Index) {
  56        writeByte (preg -> Index, preg -> Value);
  57        preg ++;
  58    }
  59}
  60
  61/*-----------------------------------------------------------------------------
  62 * video_hw_init --
  63 *-----------------------------------------------------------------------------
  64 */
  65void *video_hw_init (void)
  66{
  67    unsigned int *vm, i;
  68
  69    memset (&sed13806, 0, sizeof (GraphicDevice));
  70
  71    /* Initialization of the access to the graphic chipset
  72       Retreive base address of the chipset
  73       (see board/RPXClassic/eccx.c)                                         */
  74    if ((sed13806.isaBase = board_video_init ()) == 0) {
  75        return (NULL);
  76    }
  77
  78    sed13806.frameAdrs = sed13806.isaBase + FRAME_BUFFER_OFFSET;
  79    sed13806.winSizeX = board_get_width ();
  80    sed13806.winSizeY = board_get_height ();
  81
  82#if defined(CONFIG_VIDEO_SED13806_8BPP)
  83    sed13806.gdfIndex = GDF__8BIT_INDEX;
  84    sed13806.gdfBytesPP = 1;
  85
  86#elif defined(CONFIG_VIDEO_SED13806_16BPP)
  87    sed13806.gdfIndex = GDF_16BIT_565RGB;
  88    sed13806.gdfBytesPP = 2;
  89
  90#else
  91#error Unsupported SED13806 BPP
  92#endif
  93
  94    sed13806.memSize = sed13806.winSizeX * sed13806.winSizeY * sed13806.gdfBytesPP;
  95
  96    /* Load SED registers                                                    */
  97    EpsonSetRegs ();
  98
  99    /* (see board/RPXClassic/RPXClassic.c)                                   */
 100    board_validate_screen (sed13806.isaBase);
 101
 102    /* Clear video memory */
 103    i = sed13806.memSize/4;
 104    vm = (unsigned int *)sed13806.frameAdrs;
 105    while(i--)
 106        *vm++ = 0;
 107
 108
 109    return (&sed13806);
 110}
 111/*-----------------------------------------------------------------------------
 112 * Epson_wait_idle -- Wait for hardware to become idle
 113 *-----------------------------------------------------------------------------
 114 */
 115static void Epson_wait_idle (void)
 116{
 117    while (readByte (BLT_CTRL0) & 0x80);
 118
 119    /* Read a word in the BitBLT memory area to shutdown the BitBLT engine   */
 120    *(volatile unsigned short *)(sed13806.isaBase + BLT_REG);
 121}
 122
 123/*-----------------------------------------------------------------------------
 124 * video_hw_bitblt --
 125 *-----------------------------------------------------------------------------
 126 */
 127void video_hw_bitblt (
 128    unsigned int bpp,             /* bytes per pixel */
 129    unsigned int src_x,           /* source pos x */
 130    unsigned int src_y,           /* source pos y */
 131    unsigned int dst_x,           /* dest pos x */
 132    unsigned int dst_y,           /* dest pos y */
 133    unsigned int dim_x,           /* frame width */
 134    unsigned int dim_y            /* frame height */
 135    )
 136{
 137    register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 138    unsigned long       srcAddr, dstAddr;
 139    unsigned int stride = bpp * pGD -> winSizeX;
 140
 141    srcAddr = (src_y * stride) + (src_x * bpp);
 142    dstAddr = (dst_y * stride) + (dst_x * bpp);
 143
 144    Epson_wait_idle ();
 145
 146    writeByte(BLT_ROP,0x0C);    /* source */
 147    writeByte(BLT_OP,0x02);/* move blit in positive direction with ROP */
 148    writeWord(BLT_MEM_OFF0, stride / 2);
 149    if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 150        writeByte(BLT_CTRL1,0x00);
 151    }
 152    else {
 153        writeByte(BLT_CTRL1,0x01);
 154    }
 155
 156    writeWord(BLT_WIDTH0,(dim_x - 1));
 157    writeWord(BLT_HEIGHT0,(dim_y - 1));
 158
 159    /* set up blit registers                                                 */
 160    writeByte(BLT_SRC_ADDR0,srcAddr);
 161    writeByte(BLT_SRC_ADDR1,srcAddr>>8);
 162    writeByte(BLT_SRC_ADDR2,srcAddr>>16);
 163
 164    writeByte(BLT_DST_ADDR0,dstAddr);
 165    writeByte(BLT_DST_ADDR1,dstAddr>>8);
 166    writeByte(BLT_DST_ADDR2,dstAddr>>16);
 167
 168    /* Engage the blt engine                                                 */
 169    /* rectangular region for src and dst                                    */
 170    writeByte(BLT_CTRL0,0x80);
 171
 172    /* wait untill current blits finished                                    */
 173    Epson_wait_idle ();
 174}
 175/*-----------------------------------------------------------------------------
 176 * video_hw_rectfill --
 177 *-----------------------------------------------------------------------------
 178 */
 179void video_hw_rectfill (
 180    unsigned int bpp,             /* bytes per pixel */
 181    unsigned int dst_x,           /* dest pos x */
 182    unsigned int dst_y,           /* dest pos y */
 183    unsigned int dim_x,           /* frame width */
 184    unsigned int dim_y,           /* frame height */
 185    unsigned int color            /* fill color */
 186     )
 187{
 188    register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 189    unsigned long       dstAddr;
 190    unsigned int stride = bpp * pGD -> winSizeX;
 191
 192    dstAddr = (dst_y * stride) + (dst_x * bpp);
 193
 194    Epson_wait_idle ();
 195
 196    /* set up blit registers                                                 */
 197    writeByte(BLT_DST_ADDR0,dstAddr);
 198    writeByte(BLT_DST_ADDR1,dstAddr>>8);
 199    writeByte(BLT_DST_ADDR2,dstAddr>>16);
 200
 201    writeWord(BLT_WIDTH0,(dim_x - 1));
 202    writeWord(BLT_HEIGHT0,(dim_y - 1));
 203    writeWord(BLT_FGCOLOR0,color);
 204
 205    writeByte(BLT_OP,0x0C);  /* solid fill                                   */
 206    writeWord(BLT_MEM_OFF0,stride / 2);
 207
 208    if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 209        writeByte(BLT_CTRL1,0x00);
 210    }
 211    else {
 212        writeByte(BLT_CTRL1,0x01);
 213    }
 214
 215    /* Engage the blt engine                                                 */
 216    /* rectangular region for src and dst                                    */
 217    writeByte(BLT_CTRL0,0x80);
 218
 219    /* wait untill current blits finished                                    */
 220    Epson_wait_idle ();
 221}
 222
 223/*-----------------------------------------------------------------------------
 224 * video_set_lut --
 225 *-----------------------------------------------------------------------------
 226 */
 227void video_set_lut (
 228    unsigned int index,           /* color number */
 229    unsigned char r,              /* red */
 230    unsigned char g,              /* green */
 231    unsigned char b               /* blue */
 232    )
 233{
 234    writeByte(REG_LUT_ADDR, index );
 235    writeByte(REG_LUT_DATA, r);
 236    writeByte(REG_LUT_DATA, g);
 237    writeByte(REG_LUT_DATA, b);
 238}
 239#ifdef CONFIG_VIDEO_HW_CURSOR
 240/*-----------------------------------------------------------------------------
 241 * video_set_hw_cursor --
 242 *-----------------------------------------------------------------------------
 243 */
 244void video_set_hw_cursor (int x, int y)
 245{
 246    writeByte (LCD_CURSOR_XL, (x & 0xff));
 247    writeByte (LCD_CURSOR_XM, (x >> 8));
 248    writeByte (LCD_CURSOR_YL, (y & 0xff));
 249    writeByte (LCD_CURSOR_YM, (y >> 8));
 250}
 251
 252/*-----------------------------------------------------------------------------
 253 * video_init_hw_cursor --
 254 *-----------------------------------------------------------------------------
 255 */
 256void video_init_hw_cursor (int font_width, int font_height)
 257{
 258    volatile unsigned char *ptr;
 259    unsigned char pattern;
 260    int i;
 261
 262
 263    /* Init cursor content
 264       Cursor size is 64x64 pixels
 265       Start of the cursor memory depends on panel type (dual panel ...)     */
 266    if ((i = readByte (LCD_CURSOR_START)) == 0) {
 267        ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - HWCURSORSIZE);
 268    }
 269    else {
 270        ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - (i * 8192));
 271    }
 272
 273    /* Fill the first line and the first empty line after cursor             */
 274    for (i = 0, pattern = 0; i < 64; i++) {
 275        if (i < font_width) {
 276            /* Invert background                                             */
 277            pattern |= 0x3;
 278
 279        }
 280        else {
 281            /* Background                                                    */
 282            pattern |= 0x2;
 283        }
 284        if ((i & 3) == 3) {
 285            *ptr = pattern;
 286            *(ptr + font_height * 16) = 0xaa;
 287            ptr ++;
 288            pattern = 0;
 289        }
 290        pattern <<= 2;
 291    }
 292
 293    /* Duplicate this line                                                   */
 294    for (i = 1; i < font_height; i++) {
 295        memcpy ((void *)ptr, (void *)(ptr - 16), 16);
 296        ptr += 16;
 297    }
 298
 299    for (; i < 64; i++) {
 300        memcpy ((void *)(ptr + 16), (void *)ptr, 16);
 301        ptr += 16;
 302    }
 303
 304    /* Select cursor mode                                                    */
 305    writeByte (LCD_CURSOR_CNTL, 1);
 306}
 307#endif
 308