drivers/video/bus_vcxk.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2005-2009
   4  * Jens Scharsig @ BuS Elektronik GmbH & Co. KG, <esw@bus-elektronik.de>
   5  */
   6
   7 #include <common.h>
   8 #include <bmp_layout.h>
   9 #include <asm/io.h>
  10
  11 vu_char  *vcxk_bws      = ((vu_char *) (CONFIG_SYS_VCXK_BASE));
  12 vu_short *vcxk_bws_word = ((vu_short *)(CONFIG_SYS_VCXK_BASE));
  13 vu_long  *vcxk_bws_long = ((vu_long *) (CONFIG_SYS_VCXK_BASE));
  14
  15 #ifdef CONFIG_AT91RM9200
  16         #include <asm/arch/hardware.h>
  17         #include <asm/arch/at91_pio.h>
  18
  19         #ifndef VCBITMASK
  20                 #define VCBITMASK(bitno)        (0x0001 << (bitno % 16))
  21         #endif
  22 at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE;
  23 #define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
  24         do { \
  25                 writel(PIN, &pio->PORT.per); \
  26                 writel(PIN, &pio->PORT.DDR); \
  27                 writel(PIN, &pio->PORT.mddr); \
  28                 if (!I0O1) \
  29                         writel(PIN, &pio->PORT.puer); \
  30         } while (0);
  31
  32 #define VCXK_SET_PIN(PORT, PIN) writel(PIN, &pio->PORT.sodr);
  33 #define VCXK_CLR_PIN(PORT, PIN) writel(PIN, &pio->PORT.codr);
  34
  35 #define VCXK_ACKNOWLEDGE        \
  36         (!(readl(&pio->CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT.pdsr) & \
  37                         CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
  38 #elif defined(CONFIG_MCF52x2)
  39         #include <asm/m5282.h>
  40         #ifndef VCBITMASK
  41                 #define VCBITMASK(bitno) (0x8000 >> (bitno % 16))
  42         #endif
  43
  44         #define VCXK_INIT_PIN(PORT, PIN, DDR, I0O1) \
  45                 if (I0O1) DDR |= PIN; else DDR &= ~PIN;
  46
  47         #define VCXK_SET_PIN(PORT, PIN) PORT |= PIN;
  48         #define VCXK_CLR_PIN(PORT, PIN) PORT &= ~PIN;
  49
  50         #define VCXK_ACKNOWLEDGE \
  51                 (!(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT &   \
  52                         CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN))
  53
  54 #else
  55         #error no vcxk support for selected ARCH
  56 #endif
  57
  58 #define VCXK_DISABLE\
  59         VCXK_SET_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
  60 #define VCXK_ENABLE\
  61         VCXK_CLR_PIN(CONFIG_SYS_VCXK_ENABLE_PORT, CONFIG_SYS_VCXK_ENABLE_PIN)
  62
  63 #ifndef CONFIG_SYS_VCXK_DOUBLEBUFFERED
  64         #define VCXK_BWS(x, data)               vcxk_bws[x] = data;
  65         #define VCXK_BWS_WORD_SET(x, mask)      vcxk_bws_word[x] |= mask;
  66         #define VCXK_BWS_WORD_CLEAR(x, mask)    vcxk_bws_word[x] &= ~mask;
  67         #define VCXK_BWS_LONG(x, data)          vcxk_bws_long[x] = data;
  68 #else
  69         u_char double_bws[16384];
  70         u_short *double_bws_word;
  71         u_long  *double_bws_long;
  72         #define VCXK_BWS(x,data)        \
  73                 double_bws[x] = data; vcxk_bws[x] = data;
  74         #define VCXK_BWS_WORD_SET(x,mask)       \
  75                 double_bws_word[x] |= mask;     \
  76                 vcxk_bws_word[x] = double_bws_word[x];
  77         #define VCXK_BWS_WORD_CLEAR(x,mask)     \
  78                 double_bws_word[x] &= ~mask;    \
  79                 vcxk_bws_word[x] = double_bws_word[x];
  80         #define VCXK_BWS_LONG(x,data) \
  81                 double_bws_long[x] = data; vcxk_bws_long[x] = data;
  82 #endif
  83
  84 #define VC4K16_Bright1  vcxk_bws_word[0x20004 / 2]
  85 #define VC4K16_Bright2  vcxk_bws_word[0x20006 / 2]
  86 #define VC2K_Bright     vcxk_bws[0x8000]
  87 #define VC8K_BrightH    vcxk_bws[0xC000]
  88 #define VC8K_BrightL    vcxk_bws[0xC001]
  89
  90 vu_char VC4K16;
  91
  92 u_long display_width;
  93 u_long display_height;
  94 u_long display_bwidth;
  95
  96 ulong search_vcxk_driver(void);
  97 void vcxk_cls(void);
  98 void vcxk_setbrightness(unsigned int side, short brightness);
  99 int vcxk_request(void);
 100 int vcxk_acknowledge_wait(void);
 101 void vcxk_clear(void);
 102
 103 /*
 104  ****f* bus_vcxk/vcxk_init
 105  * FUNCTION
 106  * initialalize Video Controller
 107  * PARAMETERS
 108  * width        visible display width in pixel
 109  * height       visible display height  in pixel
 110  ***
 111  */
 112
 113 int vcxk_init(unsigned long width, unsigned long height)
 114 {
 115 #ifdef CONFIG_SYS_VCXK_RESET_PORT
 116         VCXK_INIT_PIN(CONFIG_SYS_VCXK_RESET_PORT,
 117                 CONFIG_SYS_VCXK_RESET_PIN, CONFIG_SYS_VCXK_RESET_DDR, 1)
 118         VCXK_SET_PIN(CONFIG_SYS_VCXK_RESET_PORT, CONFIG_SYS_VCXK_RESET_PIN);
 119 #endif
 120
 121 #ifdef CONFIG_SYS_VCXK_DOUBLEBUFFERED
 122         double_bws_word  = (u_short *)double_bws;
 123         double_bws_long  = (u_long *)double_bws;
 124         debug("%px %px %px\n", double_bws, double_bws_word, double_bws_long);
 125 #endif
 126         display_width  = width;
 127         display_height = height;
 128 #if (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 4)
 129         display_bwidth = ((width + 31) / 8) & ~0x3;
 130 #elif (CONFIG_SYS_VCXK_DEFAULT_LINEALIGN == 2)
 131         display_bwidth = ((width + 15) / 8) & ~0x1;
 132 #else
 133         #error CONFIG_SYS_VCXK_DEFAULT_LINEALIGN is invalid
 134 #endif
 135         debug("linesize ((%ld + 15) / 8 & ~0x1) = %ld\n",
 136                 display_width, display_bwidth);
 137
 138 #ifdef CONFIG_SYS_VCXK_AUTODETECT
 139         VC4K16 = 0;
 140         vcxk_bws_long[1] = 0x0;
 141         vcxk_bws_long[1] = 0x55AAAA55;
 142         vcxk_bws_long[5] = 0x0;
 143         if (vcxk_bws_long[1] == 0x55AAAA55)
 144                 VC4K16 = 1;
 145 #else
 146         VC4K16 = 1;
 147         debug("No autodetect: use vc4k\n");
 148 #endif
 149
 150         VCXK_INIT_PIN(CONFIG_SYS_VCXK_INVERT_PORT,
 151                 CONFIG_SYS_VCXK_INVERT_PIN, CONFIG_SYS_VCXK_INVERT_DDR, 1)
 152         VCXK_SET_PIN(CONFIG_SYS_VCXK_INVERT_PORT, CONFIG_SYS_VCXK_INVERT_PIN)
 153
 154         VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT, CONFIG_SYS_VCXK_REQUEST_PIN);
 155         VCXK_INIT_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 156                 CONFIG_SYS_VCXK_REQUEST_PIN, CONFIG_SYS_VCXK_REQUEST_DDR, 1)
 157
 158         VCXK_INIT_PIN(CONFIG_SYS_VCXK_ACKNOWLEDGE_PORT,
 159                 CONFIG_SYS_VCXK_ACKNOWLEDGE_PIN,
 160                 CONFIG_SYS_VCXK_ACKNOWLEDGE_DDR, 0)
 161
 162         VCXK_DISABLE;
 163         VCXK_INIT_PIN(CONFIG_SYS_VCXK_ENABLE_PORT,
 164                 CONFIG_SYS_VCXK_ENABLE_PIN, CONFIG_SYS_VCXK_ENABLE_DDR, 1)
 165
 166         vcxk_cls();
 167         vcxk_cls();     /* clear second/hidden page */
 168
 169         vcxk_setbrightness(3, 1000);
 170         VCXK_ENABLE;
 171         return 1;
 172 }
 173
 174 /*
 175  ****f* bus_vcxk/vcxk_setpixel
 176  * FUNCTION
 177  * set the pixel[x,y] with the given color
 178  * PARAMETER
 179  * x            pixel colum
 180  * y            pixel row
 181  * color        <0x40 off/black
 182  *                      >0x40 on
 183  ***
 184  */
 185
 186 void vcxk_setpixel(int x, int y, unsigned long color)
 187 {
 188         vu_short dataptr;
 189
 190         if ((x < display_width) && (y < display_height)) {
 191                 dataptr = ((x / 16)) + (y * (display_bwidth >> 1));
 192
 193                 color = ((color >> 16) & 0xFF) |
 194                             ((color >> 8) & 0xFF) | (color & 0xFF);
 195
 196                 if (color > 0x40) {
 197                         VCXK_BWS_WORD_SET(dataptr, VCBITMASK(x));
 198                 } else {
 199                         VCXK_BWS_WORD_CLEAR(dataptr, VCBITMASK(x));
 200                 }
 201         }
 202 }
 203
 204 /*
 205  ****f* bus_vcxk/vcxk_loadimage
 206  * FUNCTION
 207  * copies a binary image to display memory
 208  ***
 209  */
 210
 211 void vcxk_loadimage(ulong source)
 212 {
 213         int cnt;
 214         vcxk_acknowledge_wait();
 215         if (VC4K16) {
 216                 for (cnt = 0; cnt < (16384 / 4); cnt++) {
 217                         VCXK_BWS_LONG(cnt, (*(ulong *) source));
 218                         source = source + 4;
 219                 }
 220         } else {
 221                 for (cnt = 0; cnt < 16384; cnt++) {
 222                         VCXK_BWS_LONG(cnt*2, (*(vu_char *) source));
 223                         source++;
 224                 }
 225         }
 226         vcxk_request();
 227 }
 228
 229 /*
 230  ****f* bus_vcxk/vcxk_cls
 231  * FUNCTION
 232  * clear the display
 233  ***
 234  */
 235
 236 void vcxk_cls(void)
 237 {
 238         vcxk_acknowledge_wait();
 239         vcxk_clear();
 240         vcxk_request();
 241 }
 242
 243 /*
 244  ****f* bus_vcxk/vcxk_clear(void)
 245  * FUNCTION
 246  * clear the display memory
 247  ***
 248  */
 249
 250 void vcxk_clear(void)
 251 {
 252         int cnt;
 253
 254         for (cnt = 0; cnt < (16384 / 4); cnt++) {
 255                 VCXK_BWS_LONG(cnt, 0)
 256         }
 257 }
 258
 259 /*
 260  ****f* bus_vcxk/vcxk_setbrightness
 261  * FUNCTION
 262  * set the display brightness
 263  * PARAMETER
 264  * side 1       set front side brightness
 265  *              2       set back  side brightness
 266  *              3       set brightness for both sides
 267  * brightness 0..1000
 268  ***
 269  */
 270
 271 void vcxk_setbrightness(unsigned int side, short brightness)
 272 {
 273         if (VC4K16) {
 274                 if ((side == 0) || (side & 0x1))
 275                         VC4K16_Bright1 = brightness + 23;
 276                 if ((side == 0) || (side & 0x2))
 277                         VC4K16_Bright2 = brightness + 23;
 278         } else  {
 279                 VC2K_Bright = (brightness >> 4) + 2;
 280                 VC8K_BrightH = (brightness + 23) >> 8;
 281                 VC8K_BrightL = (brightness + 23) & 0xFF;
 282         }
 283 }
 284
 285 /*
 286  ****f* bus_vcxk/vcxk_request
 287  * FUNCTION
 288  * requests viewing of display memory
 289  ***
 290  */
 291
 292 int vcxk_request(void)
 293 {
 294         VCXK_CLR_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 295                 CONFIG_SYS_VCXK_REQUEST_PIN)
 296         VCXK_SET_PIN(CONFIG_SYS_VCXK_REQUEST_PORT,
 297                 CONFIG_SYS_VCXK_REQUEST_PIN);
 298         return 1;
 299 }
 300
 301 /*
 302  ****f* bus_vcxk/vcxk_acknowledge_wait
 303  * FUNCTION
 304  * wait for acknowledge viewing requests
 305  ***
 306  */
 307
 308 int vcxk_acknowledge_wait(void)
 309 {
 310         while (VCXK_ACKNOWLEDGE)
 311                 ;
 312         return 1;
 313 }
 314
 315 /*
 316  ****f* bus_vcxk/vcxk_draw_mono
 317  * FUNCTION
 318  * copies a monochrom bitmap (BMP-Format) from given memory
 319  * PARAMETER
 320  * dataptr      pointer to bitmap
 321  * x            output bitmap @ columne
 322  * y            output bitmap @ row
 323  ***
 324  */
 325
 326 void vcxk_draw_mono(unsigned char *dataptr, unsigned long linewidth,
 327         unsigned long  cp_width, unsigned long cp_height)
 328 {
 329         unsigned char *lineptr;
 330         unsigned long xcnt, ycnt;
 331
 332         for (ycnt = cp_height; ycnt > 0; ycnt--) {
 333                 lineptr = dataptr;
 334                 for (xcnt = 0; xcnt < cp_width; xcnt++) {
 335                         if ((*lineptr << (xcnt % 8)) & 0x80)
 336                                 vcxk_setpixel(xcnt, ycnt - 1, 0xFFFFFF);
 337                         else
 338                                 vcxk_setpixel(xcnt, ycnt-1, 0);
 339
 340                         if ((xcnt % 8) == 7)
 341                                 lineptr++;
 342                 } /* endfor xcnt */
 343                 dataptr = dataptr + linewidth;
 344         } /* endfor ycnt */
 345 }
 346
 347 /*
 348  ****f* bus_vcxk/vcxk_display_bitmap
 349  * FUNCTION
 350  * copies a bitmap (BMP-Format) to the given position
 351  * PARAMETER
 352  * addr         pointer to bitmap
 353  * x            output bitmap @ columne
 354  * y            output bitmap @ row
 355  ***
 356  */
 357
 358 int vcxk_display_bitmap(ulong addr, int x, int y)
 359 {
 360         struct bmp_image *bmp;
 361         unsigned long width;
 362         unsigned long height;
 363         unsigned long bpp;
 364
 365         unsigned long lw;
 366
 367         unsigned long c_width;
 368         unsigned long c_height;
 369         unsigned char *dataptr;
 370
 371         bmp = (struct bmp_image *)addr;
 372         if ((bmp->header.signature[0] == 'B') &&
 373             (bmp->header.signature[1] == 'M')) {
 374                 width        = le32_to_cpu(bmp->header.width);
 375                 height       = le32_to_cpu(bmp->header.height);
 376                 bpp          = le16_to_cpu(bmp->header.bit_count);
 377
 378                 dataptr = (unsigned char *) bmp +
 379                                 le32_to_cpu(bmp->header.data_offset);
 380
 381                 if (display_width < (width + x))
 382                         c_width = display_width - x;
 383                 else
 384                         c_width = width;
 385                 if (display_height < (height + y))
 386                         c_height = display_height - y;
 387                 else
 388                         c_height = height;
 389
 390                 lw = (((width + 7) / 8) + 3) & ~0x3;
 391
 392                 if (c_height < height)
 393                         dataptr = dataptr + lw * (height - c_height);
 394                 switch (bpp) {
 395                 case 1:
 396                         vcxk_draw_mono(dataptr, lw, c_width, c_height);
 397                         break;
 398                 default:
 399                         printf("Error: %ld bit per pixel "
 400                                 "not supported by VCxK\n", bpp);
 401                         return 0;
 402                 }
 403         } else  {
 404                 printf("Error: no valid bmp at %lx\n", (ulong) bmp);
 405                 return 0;
 406         }
 407         return 1;
 408 }
 409
 410 /*
 411  ****f* bus_vcxk/video_display_bitmap
 412  ***
 413  */
 414
 415 int video_display_bitmap(ulong addr, int x, int y)
 416 {
 417         vcxk_acknowledge_wait();
 418         if (vcxk_display_bitmap(addr, x, y)) {
 419                 vcxk_request();
 420                 return 0;
 421         }
 422         return 1;
 423 }
 424
 425 /* EOF */