firmware/target/arm/pbell/vibe500/lcd-vibe500.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id:$
   9  *
  10  * Copyright (C) 2009 by Szymon Dziok
  11  * Based on the Iriver H10 code by Barry Wardell
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22 #include "config.h"
  23 #include "cpu.h"
  24 #include "lcd.h"
  25 #include "kernel.h"
  26 #include "system.h"
  27
  28 /** Initialized in lcd_init_device() **/
  29 /* Is the power turned on? */
  30 static bool power_on;
  31 /* Is the display turned on? */
  32 static bool display_on;
  33 /* Reverse flag. Must be remembered when display is turned off. */
  34 static unsigned short disp_control_rev;
  35 /* Contrast setting << 8 */
  36 static int lcd_contrast;
  37
  38 static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
  39
  40 /* Forward declarations */
  41 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
  42 static void lcd_display_off(void);
  43 #endif
  44
  45 /* register defines for the Renesas HD66773R */
  46 /*
  47    In Packard Bell from the OF - it seems to be
  48    HD66774(gate) with HD66772(source) - registers
  49    are very similar but not all the same
  50 */
  51 #define R_START_OSC             0x00
  52 #define R_DEVICE_CODE_READ      0x00
  53 #define R_DRV_OUTPUT_CONTROL    0x01
  54 #define R_DRV_AC_CONTROL        0x02
  55 #define R_POWER_CONTROL1        0x03
  56 #define R_POWER_CONTROL2        0x04
  57 #define R_ENTRY_MODE            0x05
  58 #define R_COMPARE_REG           0x06
  59 #define R_DISP_CONTROL          0x07
  60 #define R_FRAME_CYCLE_CONTROL   0x0b
  61 #define R_POWER_CONTROL3        0x0c
  62 #define R_POWER_CONTROL4        0x0d
  63 #define R_POWER_CONTROL5        0x0e
  64 #define R_GATE_SCAN_START_POS   0x0f
  65 #define R_VERT_SCROLL_CONTROL   0x11
  66 #define R_1ST_SCR_DRV_POS       0x14
  67 #define R_2ND_SCR_DRV_POS       0x15
  68 #define R_HORIZ_RAM_ADDR_POS    0x16
  69 #define R_VERT_RAM_ADDR_POS     0x17
  70 #define R_RAM_WRITE_DATA_MASK   0x20
  71 #define R_RAM_ADDR_SET          0x21
  72 #define R_WRITE_DATA_2_GRAM     0x22
  73 #define R_RAM_READ_DATA         0x22
  74 #define R_GAMMA_FINE_ADJ_POS1   0x30
  75 #define R_GAMMA_FINE_ADJ_POS2   0x31
  76 #define R_GAMMA_FINE_ADJ_POS3   0x32
  77 #define R_GAMMA_GRAD_ADJ_POS    0x33
  78 #define R_GAMMA_FINE_ADJ_NEG1   0x34
  79 #define R_GAMMA_FINE_ADJ_NEG2   0x35
  80 #define R_GAMMA_FINE_ADJ_NEG3   0x36
  81 #define R_GAMMA_GRAD_ADJ_NEG    0x37
  82 #define R_GAMMA_AMP_ADJ_POS     0x3a
  83 #define R_GAMMA_AMP_ADJ_NEG     0x3b
  84
  85 static inline void lcd_wait_write(void)
  86 {
  87     while (LCD1_CONTROL & LCD1_BUSY_MASK);
  88 }
  89
  90 /* Send command */
  91 static inline void lcd_send_cmd(unsigned v)
  92 {
  93     lcd_wait_write();
  94     LCD1_CMD = (v >> 8);
  95     lcd_wait_write();
  96     LCD1_CMD = (v & 0xff);
  97 }
  98
  99 /* Send 16-bit data */
 100 static inline void lcd_send_data(unsigned v)
 101 {
 102     lcd_wait_write();
 103     LCD1_DATA = (v >> 8);
 104     lcd_wait_write();
 105     LCD1_DATA = (v & 0xff);
 106 }
 107
 108 /* Send 16-bit data byte-swapped.  */
 109 static inline void lcd_send_data_swapped(unsigned v)
 110 {
 111     lcd_wait_write();
 112     LCD1_DATA = (v & 0xff);
 113     lcd_wait_write();
 114     LCD1_DATA = (v >> 8);
 115 }
 116
 117 /* Write value to register */
 118 static void lcd_write_reg(int reg, int val)
 119 {
 120     lcd_send_cmd(reg);
 121     lcd_send_data(val);
 122 }
 123
 124 /*** hardware configuration ***/
 125
 126 int lcd_default_contrast(void)
 127 {
 128     return DEFAULT_CONTRAST_SETTING;
 129 }
 130
 131 void lcd_set_contrast(int val)
 132 {
 133     lcd_contrast = (val&0x1f) << 8;
 134     if (!power_on) return;
 135
 136     /* VCOMG=1, VDV4-0=xxxxx, VCM4-0=11000 */
 137     lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
 138 }
 139
 140 void lcd_set_invert_display(bool yesno)
 141 {
 142     if (yesno == (disp_control_rev == 0x0000))
 143         return;
 144
 145     disp_control_rev = yesno ? 0x0000 : 0x0004;
 146
 147     if (!display_on)
 148         return;
 149
 150     /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */
 151     lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev);
 152 }
 153
 154 /* turn the display upside down (call lcd_update() afterwards) */
 155 void lcd_set_flip(bool yesno)
 156 {
 157     if (!power_on)
 158         return;
 159
 160     /* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160) */
 161     lcd_write_reg(R_DRV_OUTPUT_CONTROL, yesno ? 0x0313 : 0x0013);
 162 }
 163
 164 /* LCD init */
 165 void lcd_init_device(void)
 166 {
 167     power_on = true;
 168     display_on = true;
 169     disp_control_rev = 0x0004;
 170     lcd_contrast     = DEFAULT_CONTRAST_SETTING << 8;
 171 }
 172
 173 #ifdef HAVE_LCD_SLEEP
 174 static void lcd_power_on(void)
 175 {
 176     /* from the OF */
 177     lcd_write_reg(R_START_OSC,0x01); /* START_OSC */
 178     sleep(HZ/40); /* 25ms */
 179     /* set 396x160 dots, SM=0, GS=x, SS=0, NL4-0=10011 G1-G160)*/
 180     lcd_write_reg(R_DRV_OUTPUT_CONTROL,0x13);
 181     /* FLD1-0=01 (1 field), B/C=1, EOR=1 (C-pat), NW5-0=000000 (1 row) */
 182     lcd_write_reg(R_DRV_AC_CONTROL,7 << 8);
 183     /* DIT=0, BGR=1, HWM=0, I/D1-0=0 - decrement AC, AM=1, LG2-0=000 */
 184     lcd_write_reg(R_ENTRY_MODE,0x1008);
 185     lcd_write_reg(0x25,0x0000); /* - ?? */
 186     lcd_write_reg(0x26,0x0202); /* - ?? */
 187     lcd_write_reg(0x0A,0x0000); /* - ?? */
 188     lcd_write_reg(R_FRAME_CYCLE_CONTROL,0x0000);
 189     lcd_write_reg(R_POWER_CONTROL4,0x0000);
 190     sleep(HZ/67); /* 15ms */
 191     lcd_write_reg(R_POWER_CONTROL5,0x0000);
 192     sleep(HZ/67); /* 15ms */
 193     lcd_write_reg(R_POWER_CONTROL3,0x0000);
 194     lcd_write_reg(0x09,0x0008); /* - ?? */
 195     sleep(HZ/67); /* 15ms */
 196     lcd_write_reg(R_POWER_CONTROL4,0x0003);
 197     sleep(HZ/67); /* 15ms */
 198     lcd_write_reg(R_POWER_CONTROL5,0x1019);
 199     sleep(HZ/20); /* 50ms */
 200     lcd_write_reg(R_POWER_CONTROL4,0x0013);
 201     sleep(HZ/67); /* 15ms */
 202     lcd_write_reg(R_POWER_CONTROL1,0x0010);
 203     sleep(HZ/67); /* 15ms */
 204     lcd_write_reg(0x09,0x0000); /* - ?? */
 205     sleep(HZ/67); /* 15ms */
 206     lcd_write_reg(R_POWER_CONTROL1,0x0010);
 207     sleep(HZ/67); /* 15ms */
 208     lcd_write_reg(R_POWER_CONTROL5,0x3019);
 209     sleep(HZ*10/66);/* /6.6 = 150ms */
 210     lcd_write_reg(0x09,0x0002); /* - ?? */
 211     sleep(HZ/67); /* 15ms */
 212     lcd_write_reg(R_POWER_CONTROL4,0x0018);
 213     sleep(HZ/20); /* 50ms */
 214     /* RAM Address set (0x0000) */
 215     lcd_write_reg(R_RAM_ADDR_SET,0x0000);
 216     /* Gamma settings */
 217     lcd_write_reg(R_GAMMA_FINE_ADJ_POS1,0x0004);
 218     lcd_write_reg(R_GAMMA_FINE_ADJ_POS2,0x0606);
 219     lcd_write_reg(R_GAMMA_FINE_ADJ_POS3,0x0505);
 220     lcd_write_reg(R_GAMMA_GRAD_ADJ_POS,0x0206);
 221     lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1,0x0505);
 222     lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2,0x0707);
 223     lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3,0x0105);
 224     lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG,0x0301);
 225     lcd_write_reg(R_GAMMA_AMP_ADJ_POS,0x1A00);
 226     lcd_write_reg(R_GAMMA_AMP_ADJ_NEG,0x010E);
 227
 228     lcd_write_reg(R_GATE_SCAN_START_POS,0x0000);
 229     /* Horizontal ram address start/end position (0,127); */
 230     lcd_write_reg(R_HORIZ_RAM_ADDR_POS,0x7F00);
 231     /* Vertical ram address start/end position (0,159); */
 232     lcd_write_reg(R_VERT_RAM_ADDR_POS,0x9F00);
 233
 234     lcd_write_reg(R_DISP_CONTROL,0x0005);
 235     sleep(HZ/25); /* 40ms */
 236     lcd_write_reg(R_DISP_CONTROL,0x0025);
 237     lcd_write_reg(R_DISP_CONTROL,0x0027);
 238     sleep(HZ/25); /* 40ms */
 239     lcd_write_reg(R_DISP_CONTROL,0x0033 | disp_control_rev);
 240     sleep(HZ/100); /* 10ms */
 241     lcd_write_reg(R_POWER_CONTROL1,0x0110);
 242     lcd_write_reg(R_FRAME_CYCLE_CONTROL,0x0000);
 243     lcd_write_reg(R_POWER_CONTROL4,0x0013);
 244     lcd_write_reg(R_POWER_CONTROL5,0x2018 | lcd_contrast);
 245     sleep(HZ/20); /* 50ms */
 246
 247     power_on = true;
 248 }
 249
 250 static void lcd_power_off(void)
 251 {
 252     /* Display must be off first */
 253     if (display_on)
 254         lcd_display_off();
 255
 256     /* power_on = false; */
 257
 258     /** Power OFF sequence **/
 259     /* The method is unknown */
 260 }
 261
 262 void lcd_sleep(void)
 263 {
 264     if (power_on)
 265         lcd_power_off();
 266
 267     /* Set standby mode */
 268     /* Because we dont know how to power off display
 269        we cannot set standby */
 270     /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=1 */
 271     /* lcd_write_reg(R_POWER_CONTROL1, 0x0001); */
 272 }
 273 #endif
 274
 275 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 276 static void lcd_display_off(void)
 277 {
 278     display_on = false;
 279
 280     /** Display OFF sequence **/
 281     /* In the OF it is called "EnterStandby" */
 282
 283     /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=10 */
 284     lcd_write_reg(R_DISP_CONTROL, 0x0032 | disp_control_rev);
 285     sleep(HZ/22); /* 45ms */
 286     /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=10 */
 287     lcd_write_reg(R_DISP_CONTROL, 0x0022 | disp_control_rev);
 288     sleep(HZ/22); /* 45ms */
 289     /* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=00 */
 290     lcd_write_reg(R_DISP_CONTROL, 0x0000);
 291
 292     lcd_write_reg(R_POWER_CONTROL1, 0x0000);
 293     lcd_write_reg(0x09, 0x0000); /* -?? */
 294     lcd_write_reg(R_POWER_CONTROL4, 0x0000);
 295
 296     sleep(HZ/22); /* 45ms */
 297 }
 298 #endif
 299
 300 #if defined(HAVE_LCD_ENABLE)
 301 static void lcd_display_on(void)
 302 {
 303     /* Be sure power is on first */
 304     if (!power_on)
 305         lcd_power_on();
 306
 307     /** Display ON Sequence **/
 308     /* In the OF it is called "ExitStandby" */
 309
 310     lcd_write_reg(R_START_OSC,1);
 311     sleep(HZ/40); /* 25ms */
 312     lcd_write_reg(R_POWER_CONTROL4,0);
 313     sleep(HZ/67); /* 15ms */
 314     lcd_write_reg(R_POWER_CONTROL5,0);
 315     sleep(HZ/67); /* 15ms */
 316     lcd_write_reg(R_DISP_CONTROL,0);
 317     sleep(HZ/67); /* 15ms */
 318     lcd_write_reg(R_POWER_CONTROL3,0);
 319     lcd_write_reg(0x09,8); /* -?? */
 320     sleep(HZ/67); /* 15ms */
 321     lcd_write_reg(R_POWER_CONTROL4,3);
 322     sleep(HZ/67); /* 15ms */
 323     lcd_write_reg(R_POWER_CONTROL5,0x1019);
 324     sleep(HZ/20); /* 50ms */
 325     lcd_write_reg(R_POWER_CONTROL4,0x13);
 326     sleep(HZ/67); /* 15ms */
 327     lcd_write_reg(R_POWER_CONTROL1,0x10);
 328     sleep(HZ/20); /* 50ms */
 329     lcd_write_reg(0x09,0); /* -?? */
 330     sleep(HZ/67); /* 15ms */
 331     lcd_write_reg(R_POWER_CONTROL1,0x10);
 332     sleep(HZ/67); /* 15ms */
 333     lcd_write_reg(R_POWER_CONTROL5,0x3019);
 334     sleep(HZ*10/66);/* /6.6 = 150ms */
 335     lcd_write_reg(0x09,2); /* -?? */
 336     sleep(HZ/20); /* 50ms */
 337     lcd_write_reg(R_DISP_CONTROL,5);
 338     sleep(HZ/22); /* 45ms */
 339     lcd_write_reg(R_DISP_CONTROL,0x25);
 340     sleep(HZ/22); /* 45ms */
 341     lcd_write_reg(R_DISP_CONTROL,0x27);
 342     sleep(HZ/25); /* 40ms */
 343     lcd_write_reg(R_DISP_CONTROL,0x33 | disp_control_rev);
 344     sleep(HZ/22); /* 45ms */
 345     /* fix contrast */
 346     lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast);
 347
 348     display_on = true;
 349 }
 350
 351 void lcd_enable(bool on)
 352 {
 353     if (on == display_on)
 354         return;
 355
 356     if (on)
 357     {
 358         lcd_display_on();
 359         /* Probably out of sync and we don't wanna pepper the code with
 360            lcd_update() calls for this. */
 361         lcd_update();
 362         send_event(LCD_EVENT_ACTIVATION, NULL);
 363     }
 364     else
 365     {
 366         lcd_display_off();
 367     }
 368 }
 369 #endif
 370
 371 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 372 bool lcd_active(void)
 373 {
 374     return display_on;
 375 }
 376 #endif
 377
 378 /*** update functions ***/
 379
 380 void lcd_yuv_set_options(unsigned options)
 381 {
 382     lcd_yuv_options = options;
 383 }
 384
 385 /* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
 386
 387 extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
 388                                    int width,
 389                                    int stride);
 390 extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
 391                                            int width,
 392                                            int stride,
 393                                            int x_screen, /* To align dither pattern */
 394                                            int y_screen);
 395
 396 /* Performance function to blit a YUV bitmap directly to the LCD */
 397 void lcd_blit_yuv(unsigned char * const src[3],
 398                   int src_x, int src_y, int stride,
 399                   int x, int y, int width, int height)
 400 {
 401     const unsigned char *yuv_src[3];
 402     const unsigned char *ysrc_max;
 403     int y0;
 404     int options;
 405
 406     if (!display_on)
 407         return;
 408
 409     width &= ~1;
 410     height &= ~1;
 411
 412     lcd_write_reg(R_VERT_RAM_ADDR_POS, ((LCD_WIDTH - 1 - x) << 8) |
 413     ((LCD_WIDTH-1) - (x + width - 1)));
 414
 415     y0 = LCD_HEIGHT - 1 - y;
 416
 417     lcd_write_reg(R_ENTRY_MODE,0x1000);
 418
 419     yuv_src[0] = src[0] + src_y * stride + src_x;
 420     yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1);
 421     yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
 422     ysrc_max = yuv_src[0] + height * stride;
 423
 424     options = lcd_yuv_options;
 425
 426     do
 427     {
 428         lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y0 << 8) | (y0 - 1));
 429         lcd_write_reg(R_RAM_ADDR_SET, ((LCD_WIDTH - 1 - x) << 8) | y0);
 430
 431         /* start drawing */
 432         lcd_send_cmd(R_WRITE_DATA_2_GRAM);
 433
 434         if (options & LCD_YUV_DITHER)
 435         {
 436             lcd_write_yuv420_lines_odither(yuv_src, width, stride,x, y);
 437             y -= 2;
 438         }
 439         else
 440         {
 441             lcd_write_yuv420_lines(yuv_src, width, stride);
 442         }
 443
 444         y0 -= 2;
 445         yuv_src[0] += stride << 1;
 446         yuv_src[1] += stride >> 1;
 447         yuv_src[2] += stride >> 1;
 448     }
 449     while (yuv_src[0] < ysrc_max);
 450     lcd_write_reg(R_ENTRY_MODE,0x1008);
 451 }
 452
 453 /* Update a fraction of the display. */
 454 void lcd_update_rect(int x0, int y0, int width, int height)
 455 {
 456     const fb_data *addr;
 457     int x1, y1;
 458
 459     if (!display_on)
 460        return;
 461
 462     if ((width<=0)||(height<=0))
 463        return;
 464
 465     if ((x0 + width)>=LCD_WIDTH)
 466        width = LCD_WIDTH - x0;
 467     if ((y0 + height)>=LCD_HEIGHT)
 468        height = LCD_HEIGHT - y0;
 469
 470     y1 = (y0 + height) - 1;
 471     x1 = (x0 + width) - 1;
 472
 473     /* In the PB Vibe LCD is flipped and the RAM addresses are decremented */
 474     lcd_send_cmd(R_HORIZ_RAM_ADDR_POS);
 475     lcd_send_data( (((LCD_HEIGHT-1)-y0) << 8) | ((LCD_HEIGHT-1)-y1));
 476
 477     lcd_send_cmd(R_VERT_RAM_ADDR_POS);
 478     lcd_send_data( (((LCD_WIDTH -1)-x0) << 8) | ((LCD_WIDTH -1)-x1));
 479
 480     lcd_send_cmd(R_RAM_ADDR_SET);
 481     lcd_send_data( (((LCD_WIDTH -1)-x0) << 8) | ((LCD_HEIGHT-1)-y0));
 482
 483     /* start drawing */
 484     lcd_send_cmd(R_WRITE_DATA_2_GRAM);
 485
 486     addr = FBADDR(x0, y0)
 487
 488     int c, r;
 489     for (r = 0; r < height; r++)
 490     {
 491         for (c = 0; c < width; c++)
 492         lcd_send_data_swapped(*addr++);
 493         addr += LCD_WIDTH - width;
 494     }
 495 }
 496
 497 /* Update the display.
 498    This must be called after all other LCD
 499    functions that change the display. */
 500 void lcd_update(void)
 501 {
 502     lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
 503 }