hw/pl110_template.h

   1 /*
   2  * Arm PrimeCell PL110 Color LCD Controller
   3  *
   4  * Copyright (c) 2005 CodeSourcery, LLC.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the GNU LGPL
   8  *
   9  * Framebuffer format conversion routines.
  10  */
  11
  12 #ifndef ORDER
  13
  14 #if BITS == 8
  15 #define COPY_PIXEL(to, from) *(to++) = from
  16 #elif BITS == 15 || BITS == 16
  17 #define COPY_PIXEL(to, from) *(uint16_t *)to = from; to += 2;
  18 #elif BITS == 24
  19 #define COPY_PIXEL(to, from) \
  20   *(to++) = from; *(to++) = (from) >> 8; *(to++) = (from) >> 16
  21 #elif BITS == 32
  22 #define COPY_PIXEL(to, from) *(uint32_t *)to = from; to += 4;
  23 #else
  24 #error unknown bit depth
  25 #endif
  26
  27 #undef RGB
  28 #define BORDER bgr
  29 #define ORDER 0
  30 #include "pl110_template.h"
  31 #define ORDER 1
  32 #include "pl110_template.h"
  33 #define ORDER 2
  34 #include "pl110_template.h"
  35 #undef BORDER
  36 #define RGB
  37 #define BORDER rgb
  38 #define ORDER 0
  39 #include "pl110_template.h"
  40 #define ORDER 1
  41 #include "pl110_template.h"
  42 #define ORDER 2
  43 #include "pl110_template.h"
  44 #undef BORDER
  45
  46 static drawfn glue(pl110_draw_fn_,BITS)[48] =
  47 {
  48     glue(pl110_draw_line1_lblp_bgr,BITS),
  49     glue(pl110_draw_line2_lblp_bgr,BITS),
  50     glue(pl110_draw_line4_lblp_bgr,BITS),
  51     glue(pl110_draw_line8_lblp_bgr,BITS),
  52     glue(pl110_draw_line16_555_lblp_bgr,BITS),
  53     glue(pl110_draw_line32_lblp_bgr,BITS),
  54     glue(pl110_draw_line16_lblp_bgr,BITS),
  55     glue(pl110_draw_line12_lblp_bgr,BITS),
  56
  57     glue(pl110_draw_line1_bbbp_bgr,BITS),
  58     glue(pl110_draw_line2_bbbp_bgr,BITS),
  59     glue(pl110_draw_line4_bbbp_bgr,BITS),
  60     glue(pl110_draw_line8_bbbp_bgr,BITS),
  61     glue(pl110_draw_line16_555_bbbp_bgr,BITS),
  62     glue(pl110_draw_line32_bbbp_bgr,BITS),
  63     glue(pl110_draw_line16_bbbp_bgr,BITS),
  64     glue(pl110_draw_line12_bbbp_bgr,BITS),
  65
  66     glue(pl110_draw_line1_lbbp_bgr,BITS),
  67     glue(pl110_draw_line2_lbbp_bgr,BITS),
  68     glue(pl110_draw_line4_lbbp_bgr,BITS),
  69     glue(pl110_draw_line8_lbbp_bgr,BITS),
  70     glue(pl110_draw_line16_555_lbbp_bgr,BITS),
  71     glue(pl110_draw_line32_lbbp_bgr,BITS),
  72     glue(pl110_draw_line16_lbbp_bgr,BITS),
  73     glue(pl110_draw_line12_lbbp_bgr,BITS),
  74
  75     glue(pl110_draw_line1_lblp_rgb,BITS),
  76     glue(pl110_draw_line2_lblp_rgb,BITS),
  77     glue(pl110_draw_line4_lblp_rgb,BITS),
  78     glue(pl110_draw_line8_lblp_rgb,BITS),
  79     glue(pl110_draw_line16_555_lblp_rgb,BITS),
  80     glue(pl110_draw_line32_lblp_rgb,BITS),
  81     glue(pl110_draw_line16_lblp_rgb,BITS),
  82     glue(pl110_draw_line12_lblp_rgb,BITS),
  83
  84     glue(pl110_draw_line1_bbbp_rgb,BITS),
  85     glue(pl110_draw_line2_bbbp_rgb,BITS),
  86     glue(pl110_draw_line4_bbbp_rgb,BITS),
  87     glue(pl110_draw_line8_bbbp_rgb,BITS),
  88     glue(pl110_draw_line16_555_bbbp_rgb,BITS),
  89     glue(pl110_draw_line32_bbbp_rgb,BITS),
  90     glue(pl110_draw_line16_bbbp_rgb,BITS),
  91     glue(pl110_draw_line12_bbbp_rgb,BITS),
  92
  93     glue(pl110_draw_line1_lbbp_rgb,BITS),
  94     glue(pl110_draw_line2_lbbp_rgb,BITS),
  95     glue(pl110_draw_line4_lbbp_rgb,BITS),
  96     glue(pl110_draw_line8_lbbp_rgb,BITS),
  97     glue(pl110_draw_line16_555_lbbp_rgb,BITS),
  98     glue(pl110_draw_line32_lbbp_rgb,BITS),
  99     glue(pl110_draw_line16_lbbp_rgb,BITS),
 100     glue(pl110_draw_line12_lbbp_rgb,BITS),
 101 };
 102
 103 #undef BITS
 104 #undef COPY_PIXEL
 105
 106 #else
 107
 108 #if ORDER == 0
 109 #define NAME glue(glue(lblp_, BORDER), BITS)
 110 #ifdef HOST_WORDS_BIGENDIAN
 111 #define SWAP_WORDS 1
 112 #endif
 113 #elif ORDER == 1
 114 #define NAME glue(glue(bbbp_, BORDER), BITS)
 115 #ifndef HOST_WORDS_BIGENDIAN
 116 #define SWAP_WORDS 1
 117 #endif
 118 #else
 119 #define SWAP_PIXELS 1
 120 #define NAME glue(glue(lbbp_, BORDER), BITS)
 121 #ifdef HOST_WORDS_BIGENDIAN
 122 #define SWAP_WORDS 1
 123 #endif
 124 #endif
 125
 126 #define FN_2(x, y) FN(x, y) FN(x+1, y)
 127 #define FN_4(x, y) FN_2(x, y) FN_2(x+2, y)
 128 #define FN_8(y) FN_4(0, y) FN_4(4, y)
 129
 130 static void glue(pl110_draw_line1_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 131 {
 132     uint32_t *palette = opaque;
 133     uint32_t data;
 134     while (width > 0) {
 135         data = *(uint32_t *)src;
 136 #ifdef SWAP_PIXELS
 137 #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 7 - (x))) & 1]);
 138 #else
 139 #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x) + y)) & 1]);
 140 #endif
 141 #ifdef SWAP_WORDS
 142         FN_8(24)
 143         FN_8(16)
 144         FN_8(8)
 145         FN_8(0)
 146 #else
 147         FN_8(0)
 148         FN_8(8)
 149         FN_8(16)
 150         FN_8(24)
 151 #endif
 152 #undef FN
 153         width -= 32;
 154         src += 4;
 155     }
 156 }
 157
 158 static void glue(pl110_draw_line2_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 159 {
 160     uint32_t *palette = opaque;
 161     uint32_t data;
 162     while (width > 0) {
 163         data = *(uint32_t *)src;
 164 #ifdef SWAP_PIXELS
 165 #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 6 - (x)*2)) & 3]);
 166 #else
 167 #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*2 + y)) & 3]);
 168 #endif
 169 #ifdef SWAP_WORDS
 170         FN_4(0, 24)
 171         FN_4(0, 16)
 172         FN_4(0, 8)
 173         FN_4(0, 0)
 174 #else
 175         FN_4(0, 0)
 176         FN_4(0, 8)
 177         FN_4(0, 16)
 178         FN_4(0, 24)
 179 #endif
 180 #undef FN
 181         width -= 16;
 182         src += 4;
 183     }
 184 }
 185
 186 static void glue(pl110_draw_line4_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 187 {
 188     uint32_t *palette = opaque;
 189     uint32_t data;
 190     while (width > 0) {
 191         data = *(uint32_t *)src;
 192 #ifdef SWAP_PIXELS
 193 #define FN(x, y) COPY_PIXEL(d, palette[(data >> (y + 4 - (x)*4)) & 0xf]);
 194 #else
 195 #define FN(x, y) COPY_PIXEL(d, palette[(data >> ((x)*4 + y)) & 0xf]);
 196 #endif
 197 #ifdef SWAP_WORDS
 198         FN_2(0, 24)
 199         FN_2(0, 16)
 200         FN_2(0, 8)
 201         FN_2(0, 0)
 202 #else
 203         FN_2(0, 0)
 204         FN_2(0, 8)
 205         FN_2(0, 16)
 206         FN_2(0, 24)
 207 #endif
 208 #undef FN
 209         width -= 8;
 210         src += 4;
 211     }
 212 }
 213
 214 static void glue(pl110_draw_line8_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 215 {
 216     uint32_t *palette = opaque;
 217     uint32_t data;
 218     while (width > 0) {
 219         data = *(uint32_t *)src;
 220 #define FN(x) COPY_PIXEL(d, palette[(data >> (x)) & 0xff]);
 221 #ifdef SWAP_WORDS
 222         FN(24)
 223         FN(16)
 224         FN(8)
 225         FN(0)
 226 #else
 227         FN(0)
 228         FN(8)
 229         FN(16)
 230         FN(24)
 231 #endif
 232 #undef FN
 233         width -= 4;
 234         src += 4;
 235     }
 236 }
 237
 238 static void glue(pl110_draw_line16_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 239 {
 240     uint32_t data;
 241     unsigned int r, g, b;
 242     while (width > 0) {
 243         data = *(uint32_t *)src;
 244 #ifdef SWAP_WORDS
 245         data = bswap32(data);
 246 #endif
 247 #ifdef RGB
 248 #define LSB r
 249 #define MSB b
 250 #else
 251 #define LSB b
 252 #define MSB r
 253 #endif
 254 #if 0
 255         LSB = data & 0x1f;
 256         data >>= 5;
 257         g = data & 0x3f;
 258         data >>= 6;
 259         MSB = data & 0x1f;
 260         data >>= 5;
 261 #else
 262         LSB = (data & 0x1f) << 3;
 263         data >>= 5;
 264         g = (data & 0x3f) << 2;
 265         data >>= 6;
 266         MSB = (data & 0x1f) << 3;
 267         data >>= 5;
 268 #endif
 269         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 270         LSB = (data & 0x1f) << 3;
 271         data >>= 5;
 272         g = (data & 0x3f) << 2;
 273         data >>= 6;
 274         MSB = (data & 0x1f) << 3;
 275         data >>= 5;
 276         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 277 #undef MSB
 278 #undef LSB
 279         width -= 2;
 280         src += 4;
 281     }
 282 }
 283
 284 static void glue(pl110_draw_line32_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 285 {
 286     uint32_t data;
 287     unsigned int r, g, b;
 288     while (width > 0) {
 289         data = *(uint32_t *)src;
 290 #ifdef RGB
 291 #define LSB r
 292 #define MSB b
 293 #else
 294 #define LSB b
 295 #define MSB r
 296 #endif
 297 #ifndef SWAP_WORDS
 298         LSB = data & 0xff;
 299         g = (data >> 8) & 0xff;
 300         MSB = (data >> 16) & 0xff;
 301 #else
 302         LSB = (data >> 24) & 0xff;
 303         g = (data >> 16) & 0xff;
 304         MSB = (data >> 8) & 0xff;
 305 #endif
 306         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 307 #undef MSB
 308 #undef LSB
 309         width--;
 310         src += 4;
 311     }
 312 }
 313
 314 static void glue(pl110_draw_line16_555_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 315 {
 316     /* RGB 555 plus an intensity bit (which we ignore) */
 317     uint32_t data;
 318     unsigned int r, g, b;
 319     while (width > 0) {
 320         data = *(uint32_t *)src;
 321 #ifdef SWAP_WORDS
 322         data = bswap32(data);
 323 #endif
 324 #ifdef RGB
 325 #define LSB r
 326 #define MSB b
 327 #else
 328 #define LSB b
 329 #define MSB r
 330 #endif
 331         LSB = (data & 0x1f) << 3;
 332         data >>= 5;
 333         g = (data & 0x1f) << 3;
 334         data >>= 5;
 335         MSB = (data & 0x1f) << 3;
 336         data >>= 5;
 337         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 338         LSB = (data & 0x1f) << 3;
 339         data >>= 5;
 340         g = (data & 0x1f) << 3;
 341         data >>= 5;
 342         MSB = (data & 0x1f) << 3;
 343         data >>= 6;
 344         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 345 #undef MSB
 346 #undef LSB
 347         width -= 2;
 348         src += 4;
 349     }
 350 }
 351
 352 static void glue(pl110_draw_line12_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 353 {
 354     /* RGB 444 with 4 bits of zeroes at the top of each halfword */
 355     uint32_t data;
 356     unsigned int r, g, b;
 357     while (width > 0) {
 358         data = *(uint32_t *)src;
 359 #ifdef SWAP_WORDS
 360         data = bswap32(data);
 361 #endif
 362 #ifdef RGB
 363 #define LSB r
 364 #define MSB b
 365 #else
 366 #define LSB b
 367 #define MSB r
 368 #endif
 369         LSB = (data & 0xf) << 4;
 370         data >>= 4;
 371         g = (data & 0xf) << 4;
 372         data >>= 4;
 373         MSB = (data & 0xf) << 4;
 374         data >>= 8;
 375         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 376         LSB = (data & 0xf) << 4;
 377         data >>= 4;
 378         g = (data & 0xf) << 4;
 379         data >>= 4;
 380         MSB = (data & 0xf) << 4;
 381         data >>= 8;
 382         COPY_PIXEL(d, glue(rgb_to_pixel,BITS)(r, g, b));
 383 #undef MSB
 384 #undef LSB
 385         width -= 2;
 386         src += 4;
 387     }
 388 }
 389
 390 #undef SWAP_PIXELS
 391 #undef NAME
 392 #undef SWAP_WORDS
 393 #undef ORDER
 394
 395 #endif