drivers/video/bus_vcxk.c

   1 /*
   2  * (C) Copyright 2005-2009
   3  * Jens Scharsig @ BuS Elektronik GmbH & Co. KG, <esw@bus-elektronik.de>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <bmp_layout.h>
  26 #include <asm/io.h>
  27
  28 vu_char  *vcxk_bws      = ((vu_char *) (CONFIG_SYS_VCXK_BASE));
  29 vu_short *vcxk_bws_word = ((vu_short *)(CONFIG_SYS_VCXK_BASE));
  30 vu_long  *vcxk_bws_long = ((vu_long *) (CONFIG_SYS_VCXK_BASE));
  31
  32 #ifdef CONFIG_AT91RM9200
  33         #include <asm/arch/hardware.h>
  34         #include <asm/arch/at91_pio.h>
  35
  36         #ifndef VCBITMASK
  37                 #define VCBITMASK(bitno)        (0x0001 << (bitno % 16))
  38         #endif
  39 #ifndef CONFIG_AT91_LEGACY
  40 at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE;
  41 #define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
  42         do { \
  43                 writel(PIN, &pio->PORT.per); \
  44                 writel(PIN, &pio->PORT.DDR); \
  45                 writel(PIN, &pio->PORT.mddr); \
  46                 if (!I0O1) \
  47                         writel(PIN, &pio->PORT.puer); \
  48         } while (0);
  49
  50 #define VCXK_SET_PIN(PORT, PIN) writel(PIN, &pio->PORT.sodr);
  51 #define VCXK_CLR_PIN(PORT, PIN) writel(PIN, &pio->PORT.codr);
  52
  53 #define VCXK_ACKNOWLEDGE        \
  54         (!(readl(&pio->CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT.pdsr) & \
  55                         CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
  56 #else
  57         #define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
  58                 ((AT91PS_PIO) PORT)->PIO_PER = PIN; \
  59                 ((AT91PS_PIO) PORT)->DDR = PIN; \
  60                 ((AT91PS_PIO) PORT)->PIO_MDDR = PIN; \
  61                 if (!I0O1) ((AT91PS_PIO) PORT)->PIO_PPUER = PIN;
  62
  63         #define VCXK_SET_PIN(PORT, PIN) ((AT91PS_PIO) PORT)->PIO_SODR  = PIN;
  64         #define VCXK_CLR_PIN(PORT, PIN) ((AT91PS_PIO) PORT)->PIO_CODR  = PIN;
  65
  66         #define VCXK_ACKNOWLEDGE        \
  67                 (!(((AT91PS_PIO) CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT)->\
  68                         PIO_PDSR & CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
  69 #endif
  70 #elif defined(CONFIG_MCF52x2)
  71         #include <asm/m5282.h>
  72         #ifndef VCBITMASK
  73                 #define VCBITMASK(bitno) (0x8000 >> (bitno % 16))
  74         #endif
  75
  76         #define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
  77                 if (I0O1) DDR |= PIN; else DDR &= ~PIN;
  78
  79         #define VCXK_SET_PIN(PORT, PIN) PORT |= PIN;
  80         #define VCXK_CLR_PIN(PORT, PIN) PORT &= ~PIN;
  81
  82         #define VCXK_ACKNOWLEDGE \
  83                 (!(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT &   \
  84                         CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
  85
  86 #else
  87         #error no vcxk support for selected ARCH
  88 #endif
  89
  90 #define VCXK_DISABLE\
  91         VCXK_SET_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
  92 #define VCXK_ENABLE\
  93         VCXK_CLR_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
  94
  95 #ifndef CONFIG_SYS_VCXK_DOUBLEBUFFERED
  96         #define VCXK_BWS(x, data)               vcxk_bws[x] = data;
  97         #define VCXK_BWS_WORD_SET(x, mask)      vcxk_bws_word[x] |= mask;
  98         #define VCXK_BWS_WORD_CLEAR(x, mask)    vcxk_bws_word[x] &= ~mask;
  99         #define VCXK_BWS_LONG(x, data)          vcxk_bws_long[x] = data;
 100 #else
 101         u_char double_bws[16384];
 102         u_short *double_bws_word;
 103         u_long  *double_bws_long;
 104         #define VCXK_BWS(x,data)        \
 105                 double_bws[x] = data; vcxk_bws[x] = data;
 106         #define VCXK_BWS_WORD_SET(x,mask)       \
 107                 double_bws_word[x] |= mask;     \
 108                 vcxk_bws_word[x] = double_bws_word[x];
 109         #define VCXK_BWS_WORD_CLEAR(x,mask)     \
 110                 double_bws_word[x] &= ~mask;    \
 111                 vcxk_bws_word[x] = double_bws_word[x];
 112         #define VCXK_BWS_LONG(x,data) \
 113                 double_bws_long[x] = data; vcxk_bws_long[x] = data;
 114 #endif
 115
 116 #define VC4K16_Bright1  vcxk_bws_word[0x20004 / 2]
 117 #define VC4K16_Bright2  vcxk_bws_word[0x20006 / 2]
 118 #define VC2K_Bright     vcxk_bws[0x8000]
 119 #define VC8K_BrightH    vcxk_bws[0xC000]
 120 #define VC8K_BrightL    vcxk_bws[0xC001]
 121
 122 vu_char VC4K16;
 123
 124 u_long display_width;
 125 u_long display_height;
 126 u_long display_bwidth;
 127
 128 ulong search_vcxk_driver(void);
 129 void vcxk_cls(void);
 130 void vcxk_setbrightness(unsigned int side, short brightness);
 131 int vcxk_request(void);
 132 int vcxk_acknowledge_wait(void);
 133 void vcxk_clear(void);
 134
 135 /*
 136  ****f* bus_vcxk/vcxk_init
 137  * FUNCTION
 138  * initialalize Video Controller
 139  * PARAMETERS
 140  * width        visible display width in pixel
 141  * height       visible display height  in pixel
 142  ***
 143  */
 144
 145 int vcxk_init(unsigned long width, unsigned long height)
 146 {
 147 #ifdef CONFIG_SYS_VCXK_RESET_PORT
 148         VCXK_INIT_PIN(CONFIG_SYS_VCXK_RESET_PORT,
 149                 CONFIG_SYS_VCXK_RESET_PIN, CONFIG_SYS_VCXK_RESET_DDR, 1)
 150         VCXK_SET_PIN(CONFIG_SYS_VCXK_RESET_PORT, CONFIG_SYS_VCXK_RESET_PIN);
 151 #endif
 152
 153 #ifdef CONFIG_SYS_VCXK_DOUBLEBUFFERED
 154         double_bws_word  = (u_short *)double_bws;
 155         double_bws_long  = (u_long *)double_bws;
 156         debug("%lx %lx %lx \n", double_bws, double_bws_word, double_bws_long);
 157 #endif
 158         display_width  = width;
 159         display_height = height;
 160 #if (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 4)
 161         display_bwidth = ((width + 31) / 8) & ~0x3;
 162 #elif (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 2)
 163         display_bwidth = ((width + 15) / 8) & ~0x1;
 164 #else
 165         #error CONFIG_SYS_VCXK_DEFAULT_LINEALIGN is invalid
 166 #endif
 167         debug("linesize ((%ld + 15) / 8 & ~0x1) = %ld\n",
 168                 display_width, display_bwidth);
 169
 170 #ifdef CONFIG_SYS_VCXK_AUTODETECT
 171         VC4K16 = 0;
 172         vcxk_bws_long[1] = 0x0;
 173         vcxk_bws_long[1] = 0x55AAAA55;
 174         vcxk_bws_long[5] = 0x0;
 175         if (vcxk_bws_long[1] == 0x55AAAA55)
 176                 VC4K16 = 1;
 177 #else
 178         VC4K16 = 1;
 179         debug("No autodetect: use vc4k\n");
 180 #endif
 181
 182         VCXK_INIT_PIN(CONFIG_SYS_VCXK_INVERT_PORT,
 183                 CONFIG_SYS_VCXK_INVERT_PIN, CONFIG_SYS_VCXK_INVERT_DDR, 1)
 184         VCXK_SET_PIN(CONFIG_SYS_VCXK_INVERT_PORT, CONFIG_SYS_VCXK_INVERT_PIN)
 185
 186         VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT, CONFIG_SYS_VCXK_REQUEST_PIN);
 187         VCXK_INIT_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 188                 CONFIG_SYS_VCXK_REQUEST_PIN, CONFIG_SYS_VCXK_REQUEST_DDR, 1)
 189
 190         VCXK_INIT_PIN(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT,
 191                 CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN,
 192                 CONFIG_SYS_VCXK_ACKNOWLEDGE_DDR, 0)
 193
 194         VCXK_DISABLE;
 195         VCXK_INIT_PIN(CONFIG_SYS_VCXK_ENABLE_PORT,
 196                 CONFIG_SYS_VCXK_ENABLE_PIN, CONFIG_SYS_VCXK_ENABLE_DDR, 1)
 197
 198         vcxk_cls();
 199         vcxk_cls();     /* clear second/hidden page */
 200
 201         vcxk_setbrightness(3, 1000);
 202         VCXK_ENABLE;
 203         return 1;
 204 }
 205
 206 /*
 207  ****f* bus_vcxk/vcxk_setpixel
 208  * FUNCTION
 209  * set the pixel[x,y] with the given color
 210  * PARAMETER
 211  * x            pixel colum
 212  * y            pixel row
 213  * color        <0x40 off/black
 214  *                      >0x40 on
 215  ***
 216  */
 217
 218 void vcxk_setpixel(int x, int y, unsigned long color)
 219 {
 220         vu_short dataptr;
 221
 222         if ((x < display_width) && (y < display_height)) {
 223                 dataptr = ((x / 16)) + (y * (display_bwidth >> 1));
 224
 225                 color = ((color >> 16) & 0xFF) |
 226                             ((color >> 8) & 0xFF) | (color & 0xFF);
 227
 228                 if (color > 0x40) {
 229                         VCXK_BWS_WORD_SET(dataptr, VCBITMASK(x));
 230                 } else {
 231                         VCXK_BWS_WORD_CLEAR(dataptr, VCBITMASK(x));
 232                 }
 233         }
 234 }
 235
 236 /*
 237  ****f* bus_vcxk/vcxk_loadimage
 238  * FUNCTION
 239  * copies a binary image to display memory
 240  ***
 241  */
 242
 243 void vcxk_loadimage(ulong source)
 244 {
 245         int cnt;
 246         vcxk_acknowledge_wait();
 247         if (VC4K16) {
 248                 for (cnt = 0; cnt < (16384 / 4); cnt++) {
 249                         VCXK_BWS_LONG(cnt, (*(ulong *) source));
 250                         source = source + 4;
 251                 }
 252         } else {
 253                 for (cnt = 0; cnt < 16384; cnt++) {
 254                         VCXK_BWS_LONG(cnt*2, (*(vu_char *) source));
 255                         source++;
 256                 }
 257         }
 258         vcxk_request();
 259 }
 260
 261 /*
 262  ****f* bus_vcxk/vcxk_cls
 263  * FUNCTION
 264  * clear the display
 265  ***
 266  */
 267
 268 void vcxk_cls(void)
 269 {
 270         vcxk_acknowledge_wait();
 271         vcxk_clear();
 272         vcxk_request();
 273 }
 274
 275 /*
 276  ****f* bus_vcxk/vcxk_clear(void)
 277  * FUNCTION
 278  * clear the display memory
 279  ***
 280  */
 281
 282 void vcxk_clear(void)
 283 {
 284         int cnt;
 285
 286         for (cnt = 0; cnt < (16384 / 4); cnt++) {
 287                 VCXK_BWS_LONG(cnt, 0)
 288         }
 289 }
 290
 291 /*
 292  ****f* bus_vcxk/vcxk_setbrightness
 293  * FUNCTION
 294  * set the display brightness
 295  * PARAMETER
 296  * side 1       set front side brightness
 297  *              2       set back  side brightness
 298  *              3       set brightness for both sides
 299  * brightness 0..1000
 300  ***
 301  */
 302
 303 void vcxk_setbrightness(unsigned int side, short brightness)
 304 {
 305         if (VC4K16) {
 306                 if ((side == 0) || (side & 0x1))
 307                         VC4K16_Bright1 = brightness + 23;
 308                 if ((side == 0) || (side & 0x2))
 309                         VC4K16_Bright2 = brightness + 23;
 310         } else  {
 311                 VC2K_Bright = (brightness >> 4) + 2;
 312                 VC8K_BrightH = (brightness + 23) >> 8;
 313                 VC8K_BrightL = (brightness + 23) & 0xFF;
 314         }
 315 }
 316
 317 /*
 318  ****f* bus_vcxk/vcxk_request
 319  * FUNCTION
 320  * requests viewing of display memory
 321  ***
 322  */
 323
 324 int vcxk_request(void)
 325 {
 326         VCXK_CLR_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 327                 CONFIG_SYS_VCXK_REQUEST_PIN)
 328         VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 329                 CONFIG_SYS_VCXK_REQUEST_PIN);
 330         return 1;
 331 }
 332
 333 /*
 334  ****f* bus_vcxk/vcxk_acknowledge_wait
 335  * FUNCTION
 336  * wait for acknowledge viewing requests
 337  ***
 338  */
 339
 340 int vcxk_acknowledge_wait(void)
 341 {
 342         while (VCXK_ACKNOWLEDGE)
 343                 ;
 344         return 1;
 345 }
 346
 347 /*
 348  ****f* bus_vcxk/vcxk_draw_mono
 349  * FUNCTION
 350  * copies a monochrom bitmap (BMP-Format) from given memory
 351  * PARAMETER
 352  * dataptr      pointer to bitmap
 353  * x            output bitmap @ columne
 354  * y            output bitmap @ row
 355  ***
 356  */
 357
 358 void vcxk_draw_mono(unsigned char *dataptr, unsigned long linewidth,
 359         unsigned long  cp_width, unsigned long cp_height)
 360 {
 361         unsigned char *lineptr;
 362         unsigned long xcnt, ycnt;
 363
 364         for (ycnt = cp_height; ycnt > 0; ycnt--) {
 365                 lineptr = dataptr;
 366                 for (xcnt = 0; xcnt < cp_width; xcnt++) {
 367                         if ((*lineptr << (xcnt % 8)) & 0x80)
 368                                 vcxk_setpixel(xcnt, ycnt - 1, 0xFFFFFF);
 369                         else
 370                                 vcxk_setpixel(xcnt, ycnt-1, 0);
 371
 372                         if ((xcnt % 8) == 7)
 373                                 lineptr++;
 374                 } /* endfor xcnt */
 375                 dataptr = dataptr + linewidth;
 376         } /* endfor ycnt */
 377 }
 378
 379 /*
 380  ****f* bus_vcxk/vcxk_display_bitmap
 381  * FUNCTION
 382  * copies a bitmap (BMP-Format) to the given position
 383  * PARAMETER
 384  * addr         pointer to bitmap
 385  * x            output bitmap @ columne
 386  * y            output bitmap @ row
 387  ***
 388  */
 389
 390 int vcxk_display_bitmap(ulong addr, int x, int y)
 391 {
 392         bmp_image_t *bmp;
 393         unsigned long width;
 394         unsigned long height;
 395         unsigned long bpp;
 396
 397         unsigned long lw;
 398
 399         unsigned long c_width;
 400         unsigned long c_height;
 401         unsigned char *dataptr;
 402
 403         bmp = (bmp_image_t *) addr;
 404         if ((bmp->header.signature[0] == 'B') &&
 405             (bmp->header.signature[1] == 'M')) {
 406                 width        = le32_to_cpu(bmp->header.width);
 407                 height       = le32_to_cpu(bmp->header.height);
 408                 bpp          = le16_to_cpu(bmp->header.bit_count);
 409
 410                 dataptr = (unsigned char *) bmp +
 411                                 le32_to_cpu(bmp->header.data_offset);
 412
 413                 if (display_width < (width + x))
 414                         c_width = display_width - x;
 415                 else
 416                         c_width = width;
 417                 if (display_height < (height + y))
 418                         c_height = display_height - y;
 419                 else
 420                         c_height = height;
 421
 422                 lw = (((width + 7) / 8) + 3) & ~0x3;
 423
 424                 if (c_height < height)
 425                         dataptr = dataptr + lw * (height - c_height);
 426                 switch (bpp) {
 427                 case 1:
 428                         vcxk_draw_mono(dataptr, lw, c_width, c_height);
 429                         break;
 430                 default:
 431                         printf("Error: %ld bit per pixel "
 432                                 "not supported by VCxK\n", bpp);
 433                         return 0;
 434                 }
 435         } else  {
 436                 printf("Error: no valid bmp at %lx\n", (ulong) bmp);
 437                 return 0;
 438         }
 439         return 1;
 440 }
 441
 442 /*
 443  ****f* bus_vcxk/video_display_bitmap
 444  ***
 445  */
 446
 447 int video_display_bitmap(ulong addr, int x, int y)
 448 {
 449         vcxk_acknowledge_wait();
 450         if (vcxk_display_bitmap(addr, x, y)) {
 451                 vcxk_request();
 452                 return 0;
 453         }
 454         return 1;
 455 }
 456
 457 /* EOF */