drivers/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 #ifdef CONFIG_VIDEO_SED13806
  29
  30 #include <video_fb.h>
  31 #include <sed13806.h>
  32
  33 #define readByte(ptrReg)                \
  34     *(volatile unsigned char *)(sed13806.isaBase + ptrReg)
  35
  36 #define writeByte(ptrReg,value) \
  37     *(volatile unsigned char *)(sed13806.isaBase + ptrReg) = value
  38
  39 #ifdef CONFIG_TOTAL5200
  40 #define writeWord(ptrReg,value) \
  41     (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = value)
  42 #else
  43 #define writeWord(ptrReg,value) \
  44     (*(volatile unsigned short *)(sed13806.isaBase + ptrReg) = ((value >> 8 ) & 0xff) | ((value << 8) & 0xff00))
  45 #endif
  46
  47 GraphicDevice sed13806;
  48
  49 /*-----------------------------------------------------------------------------
  50  * EpsonSetRegs --
  51  *-----------------------------------------------------------------------------
  52  */
  53 static void EpsonSetRegs (void)
  54 {
  55     /* the content of the chipset register depends on the board (clocks, ...)*/
  56     const S1D_REGS *preg = board_get_regs ();
  57     while (preg -> Index) {
  58         writeByte (preg -> Index, preg -> Value);
  59         preg ++;
  60     }
  61 }
  62
  63 /*-----------------------------------------------------------------------------
  64  * video_hw_init --
  65  *-----------------------------------------------------------------------------
  66  */
  67 void *video_hw_init (void)
  68 {
  69     unsigned int *vm, i;
  70
  71     memset (&sed13806, 0, sizeof (GraphicDevice));
  72
  73     /* Initialization of the access to the graphic chipset
  74        Retreive base address of the chipset
  75        (see board/RPXClassic/eccx.c)                                         */
  76     if ((sed13806.isaBase = board_video_init ()) == 0) {
  77         return (NULL);
  78     }
  79
  80     sed13806.frameAdrs = sed13806.isaBase + FRAME_BUFFER_OFFSET;
  81     sed13806.winSizeX = board_get_width ();
  82     sed13806.winSizeY = board_get_height ();
  83
  84 #if defined(CONFIG_VIDEO_SED13806_8BPP)
  85     sed13806.gdfIndex = GDF__8BIT_INDEX;
  86     sed13806.gdfBytesPP = 1;
  87
  88 #elif defined(CONFIG_VIDEO_SED13806_16BPP)
  89     sed13806.gdfIndex = GDF_16BIT_565RGB;
  90     sed13806.gdfBytesPP = 2;
  91
  92 #else
  93 #error Unsupported SED13806 BPP
  94 #endif
  95
  96     sed13806.memSize = sed13806.winSizeX * sed13806.winSizeY * sed13806.gdfBytesPP;
  97
  98     /* Load SED registers                                                    */
  99     EpsonSetRegs ();
 100
 101     /* (see board/RPXClassic/RPXClassic.c)                                   */
 102     board_validate_screen (sed13806.isaBase);
 103
 104     /* Clear video memory */
 105     i = sed13806.memSize/4;
 106     vm = (unsigned int *)sed13806.frameAdrs;
 107     while(i--)
 108         *vm++ = 0;
 109
 110
 111     return (&sed13806);
 112 }
 113 /*-----------------------------------------------------------------------------
 114  * Epson_wait_idle -- Wait for hardware to become idle
 115  *-----------------------------------------------------------------------------
 116  */
 117 static void Epson_wait_idle (void)
 118 {
 119     while (readByte (BLT_CTRL0) & 0x80);
 120
 121     /* Read a word in the BitBLT memory area to shutdown the BitBLT engine   */
 122     *(volatile unsigned short *)(sed13806.isaBase + BLT_REG);
 123 }
 124
 125 /*-----------------------------------------------------------------------------
 126  * video_hw_bitblt --
 127  *-----------------------------------------------------------------------------
 128  */
 129 void video_hw_bitblt (
 130     unsigned int bpp,             /* bytes per pixel */
 131     unsigned int src_x,           /* source pos x */
 132     unsigned int src_y,           /* source pos y */
 133     unsigned int dst_x,           /* dest pos x */
 134     unsigned int dst_y,           /* dest pos y */
 135     unsigned int dim_x,           /* frame width */
 136     unsigned int dim_y            /* frame height */
 137     )
 138 {
 139     register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 140     unsigned long       srcAddr, dstAddr;
 141     unsigned int stride = bpp * pGD -> winSizeX;
 142
 143     srcAddr = (src_y * stride) + (src_x * bpp);
 144     dstAddr = (dst_y * stride) + (dst_x * bpp);
 145
 146     Epson_wait_idle ();
 147
 148     writeByte(BLT_ROP,0x0C);    /* source */
 149     writeByte(BLT_OP,0x02);/* move blit in positive direction with ROP */
 150     writeWord(BLT_MEM_OFF0, stride / 2);
 151     if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 152         writeByte(BLT_CTRL1,0x00);
 153     }
 154     else {
 155         writeByte(BLT_CTRL1,0x01);
 156     }
 157
 158     writeWord(BLT_WIDTH0,(dim_x - 1));
 159     writeWord(BLT_HEIGHT0,(dim_y - 1));
 160
 161     /* set up blit registers                                                 */
 162     writeByte(BLT_SRC_ADDR0,srcAddr);
 163     writeByte(BLT_SRC_ADDR1,srcAddr>>8);
 164     writeByte(BLT_SRC_ADDR2,srcAddr>>16);
 165
 166     writeByte(BLT_DST_ADDR0,dstAddr);
 167     writeByte(BLT_DST_ADDR1,dstAddr>>8);
 168     writeByte(BLT_DST_ADDR2,dstAddr>>16);
 169
 170     /* Engage the blt engine                                                 */
 171     /* rectangular region for src and dst                                    */
 172     writeByte(BLT_CTRL0,0x80);
 173
 174     /* wait untill current blits finished                                    */
 175     Epson_wait_idle ();
 176 }
 177 /*-----------------------------------------------------------------------------
 178  * video_hw_rectfill --
 179  *-----------------------------------------------------------------------------
 180  */
 181 void video_hw_rectfill (
 182     unsigned int bpp,             /* bytes per pixel */
 183     unsigned int dst_x,           /* dest pos x */
 184     unsigned int dst_y,           /* dest pos y */
 185     unsigned int dim_x,           /* frame width */
 186     unsigned int dim_y,           /* frame height */
 187     unsigned int color            /* fill color */
 188      )
 189 {
 190     register GraphicDevice *pGD = (GraphicDevice *)&sed13806;
 191     unsigned long       dstAddr;
 192     unsigned int stride = bpp * pGD -> winSizeX;
 193
 194     dstAddr = (dst_y * stride) + (dst_x * bpp);
 195
 196     Epson_wait_idle ();
 197
 198     /* set up blit registers                                                 */
 199     writeByte(BLT_DST_ADDR0,dstAddr);
 200     writeByte(BLT_DST_ADDR1,dstAddr>>8);
 201     writeByte(BLT_DST_ADDR2,dstAddr>>16);
 202
 203     writeWord(BLT_WIDTH0,(dim_x - 1));
 204     writeWord(BLT_HEIGHT0,(dim_y - 1));
 205     writeWord(BLT_FGCOLOR0,color);
 206
 207     writeByte(BLT_OP,0x0C);  /* solid fill                                   */
 208     writeWord(BLT_MEM_OFF0,stride / 2);
 209
 210     if (pGD -> gdfIndex == GDF__8BIT_INDEX) {
 211         writeByte(BLT_CTRL1,0x00);
 212     }
 213     else {
 214         writeByte(BLT_CTRL1,0x01);
 215     }
 216
 217     /* Engage the blt engine                                                 */
 218     /* rectangular region for src and dst                                    */
 219     writeByte(BLT_CTRL0,0x80);
 220
 221     /* wait untill current blits finished                                    */
 222     Epson_wait_idle ();
 223 }
 224
 225 /*-----------------------------------------------------------------------------
 226  * video_set_lut --
 227  *-----------------------------------------------------------------------------
 228  */
 229 void video_set_lut (
 230     unsigned int index,           /* color number */
 231     unsigned char r,              /* red */
 232     unsigned char g,              /* green */
 233     unsigned char b               /* blue */
 234     )
 235 {
 236     writeByte(REG_LUT_ADDR, index );
 237     writeByte(REG_LUT_DATA, r);
 238     writeByte(REG_LUT_DATA, g);
 239     writeByte(REG_LUT_DATA, b);
 240 }
 241 #ifdef CONFIG_VIDEO_HW_CURSOR
 242 /*-----------------------------------------------------------------------------
 243  * video_set_hw_cursor --
 244  *-----------------------------------------------------------------------------
 245  */
 246 void video_set_hw_cursor (int x, int y)
 247 {
 248     writeByte (LCD_CURSOR_XL, (x & 0xff));
 249     writeByte (LCD_CURSOR_XM, (x >> 8));
 250     writeByte (LCD_CURSOR_YL, (y & 0xff));
 251     writeByte (LCD_CURSOR_YM, (y >> 8));
 252 }
 253
 254 /*-----------------------------------------------------------------------------
 255  * video_init_hw_cursor --
 256  *-----------------------------------------------------------------------------
 257  */
 258 void video_init_hw_cursor (int font_width, int font_height)
 259 {
 260     volatile unsigned char *ptr;
 261     unsigned char pattern;
 262     int i;
 263
 264
 265     /* Init cursor content
 266        Cursor size is 64x64 pixels
 267        Start of the cursor memory depends on panel type (dual panel ...)     */
 268     if ((i = readByte (LCD_CURSOR_START)) == 0) {
 269         ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - HWCURSORSIZE);
 270     }
 271     else {
 272         ptr = (unsigned char *)(sed13806.frameAdrs + DEFAULT_VIDEO_MEMORY_SIZE - (i * 8192));
 273     }
 274
 275     /* Fill the first line and the first empty line after cursor             */
 276     for (i = 0, pattern = 0; i < 64; i++) {
 277         if (i < font_width) {
 278             /* Invert background                                             */
 279             pattern |= 0x3;
 280
 281         }
 282         else {
 283             /* Background                                                    */
 284             pattern |= 0x2;
 285         }
 286         if ((i & 3) == 3) {
 287             *ptr = pattern;
 288             *(ptr + font_height * 16) = 0xaa;
 289             ptr ++;
 290             pattern = 0;
 291         }
 292         pattern <<= 2;
 293     }
 294
 295     /* Duplicate this line                                                   */
 296     for (i = 1; i < font_height; i++) {
 297         memcpy ((void *)ptr, (void *)(ptr - 16), 16);
 298         ptr += 16;
 299     }
 300
 301     for (; i < 64; i++) {
 302         memcpy ((void *)(ptr + 16), (void *)ptr, 16);
 303         ptr += 16;
 304     }
 305
 306     /* Select cursor mode                                                    */
 307     writeByte (LCD_CURSOR_CNTL, 1);
 308 }
 309 #endif
 310 #endif