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
  45 GraphicDevice sed13806;
  46
  47 /*-----------------------------------------------------------------------------
  48  * EpsonSetRegs --
  49  *-----------------------------------------------------------------------------
  50  */
  51 static 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  */
  65 void *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  */
 115 static 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  */
 127 void 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  */
 179 void 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  */
 227 void 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  */
 244 void 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  */
 256 void 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