firmware/target/arm/tms320dm320/creative-zvm/lcd-creativezvm.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2008 by Maurus Cuelenaere
  11 *
  12 * This program is free software; you can redistribute it and/or
  13 * modify it under the terms of the GNU General Public License
  14 * as published by the Free Software Foundation; either version 2
  15 * of the License, or (at your option) any later version.
  16 *
  17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18 * KIND, either express or implied.
  19 *
  20 ****************************************************************************/
  21 #include "config.h"
  22
  23 #include "hwcompat.h"
  24 #include "kernel.h"
  25 #include "lcd.h"
  26 #include "system.h"
  27 #include "memory.h"
  28 #include "cpu.h"
  29 #include "spi.h"
  30 #include "spi-target.h"
  31 #include "lcd-target.h"
  32 #include "ltv350qv.h"
  33
  34 /* Power and display status */
  35 static bool display_on = false; /* Is the display turned on? */
  36 static bool direct_fb_access = false; /* Does the DM320 has direct access to the FB? */
  37
  38 /* Copies a rectangle from one framebuffer to another. Can be used in
  39    single transfer mode with width = num pixels, and height = 1 which
  40    allows a full-width rectangle to be copied more efficiently. */
  41 extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
  42                                  int width, int height);
  43
  44 int lcd_default_contrast(void)
  45 {
  46     return 0x1f;
  47 }
  48
  49 void lcd_set_contrast(int val)
  50 {
  51     /* find S6F2002 controller datasheet first */
  52     (void)val;
  53 }
  54
  55 void lcd_set_invert_display(bool yesno) {
  56   (void) yesno;
  57   /* TODO: */
  58 }
  59
  60 void lcd_set_flip(bool yesno) {
  61   (void) yesno;
  62   /* TODO: */
  63 }
  64
  65 static void enable_venc(bool enable)
  66 {
  67     if(enable)
  68     {
  69         /* Set OSD clock */
  70         IO_CLK_MOD1 &= ~(CLK_MOD1_VENC | CLK_MOD1_OSD); /* disable OSD clock and VENC clock */
  71         IO_CLK_O2DIV = 3;
  72
  73         IO_CLK_OSEL &= ~CLK_OSEL_O2SEL(0xF); /* reset 'General purpose clock output (GIO26, GIO34)' and */
  74         IO_CLK_OSEL |= CLK_OSEL_O2SEL(4);    /* set to 'PLLIN clock' */
  75
  76         IO_CLK_SEL1 |= (CLK_SEL1_OSD | CLK_SEL1_VENC(7)); /* set to 'GP clock output 2 (GIO26, GIO34)' and turn on 'VENC clock' */
  77         IO_CLK_MOD1 |= (CLK_MOD1_VENC | CLK_MOD1_OSD);    /* enable OSD clock and VENC clock */
  78     }
  79     else
  80     {
  81         /* Disable video encoder */
  82         IO_VID_ENC_VMOD &= ~VENC_VMOD_VENC;
  83         /* Disable clock for power saving */
  84         IO_CLK_MOD1 &= ~(CLK_MOD1_VENC | CLK_MOD1_OSD);
  85     }
  86 }
  87
  88 /* LTV250QV panel functions */
  89 static void lcd_write_reg(unsigned char reg, unsigned short val)
  90 {
  91     unsigned char block[3] = {LTV_OPC_INDEX, 0, reg | 0xFF};
  92     spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0);
  93     block[0] = LTV_OPC_DATA;
  94     block[1] = val >> 8;
  95     block[2] = val & 0xFF;
  96     spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0);
  97 }
  98
  99 static void sleep_ms(unsigned int ms)
 100 {
 101     sleep(ms*HZ/1000);
 102 }
 103
 104 static void lcd_display_on(bool reset)
 105 {
 106     /* Enable main power */
 107     IO_GIO_BITSET2 |= (1 << 3);
 108
 109     /* power on sequence as per the ZVM firmware */
 110     sleep_ms(250);
 111     IO_GIO_BITSET1 = (1 << 13);
 112     sleep_ms(5);
 113     IO_GIO_BITSET2 = (1 << 5);
 114     IO_GIO_BITSET2 = (1 << 8);
 115     sleep_ms(1);
 116
 117     /*Init SPI here... */
 118     sleep_ms(32);
 119
 120     IO_GIO_BITSET2 = (1 << 0);
 121     sleep_ms(5);
 122     IO_GIO_BITSET2 = (1 << 7);
 123     sleep_ms(5);
 124     IO_GIO_BITSET2 = (1 << 4);
 125     sleep_ms(5);
 126     IO_GIO_BITCLR2 = (1 << 8);
 127     /*TODO: figure out what OF does after this... */
 128     IO_GIO_BITSET2 = (1 << 8);
 129     sleep_ms(1);
 130
 131     lcd_write_reg(LTV_IFCTL,     LTV_NL(29));
 132     lcd_write_reg(LTV_DATACTL,   0);
 133     lcd_write_reg(LTV_ENTRY_MODE,0);
 134     lcd_write_reg(LTV_GATECTL1,  0);
 135     lcd_write_reg(LTV_GATECTL2,  (LTV_NW_INV_1LINE | LTV_FHN | LTV_FTI(2) | LTV_FWI(3)));
 136     lcd_write_reg(LTV_VBP,       0);
 137     lcd_write_reg(LTV_HBP,       0);
 138     lcd_write_reg(LTV_SOTCTL,    0);
 139     lcd_write_reg(LTV_PWRCTL1,   0);
 140     lcd_write_reg(LTV_PWRCTL2,   0);
 141     lcd_write_reg(LTV_GAMMA(0),  0);
 142     lcd_write_reg(LTV_GAMMA(1),  0);
 143     lcd_write_reg(LTV_GAMMA(2),  0);
 144     lcd_write_reg(LTV_GAMMA(3),  0);
 145     lcd_write_reg(LTV_GAMMA(4),  0);
 146     lcd_write_reg(LTV_GAMMA(5),  0);
 147     lcd_write_reg(LTV_GAMMA(6),  0);
 148     lcd_write_reg(LTV_GAMMA(7),  0);
 149     lcd_write_reg(LTV_GAMMA(8),  0);
 150     lcd_write_reg(LTV_GAMMA(9),  0);
 151     sleep_ms(10);
 152
 153     lcd_write_reg(LTV_PWRCTL1,   (LTV_VCOM_DISABLE | LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
 154     lcd_write_reg(LTV_PWRCTL2,   0);
 155     sleep_ms(40);
 156
 157     lcd_write_reg(LTV_PWRCTL2,   LTV_VCOML_ENABLE);
 158     sleep_ms(40);
 159
 160     lcd_write_reg(LTV_IFCTL,     (LTV_NMD | LTV_NL(29)));
 161     lcd_write_reg(LTV_DATACTL,   (LTV_DS_SAME | LTV_CHS_480 | LTV_DF_RGB | LTV_RGB_BGR));
 162     lcd_write_reg(LTV_ENTRY_MODE,(LTV_VSPL_ACTIVE_LOW | LTV_HSPL_ACTIVE_LOW | LTV_DPL_SAMPLE_RISING | LTV_EPL_ACTIVE_LOW | LTV_SS_RIGHT_TO_LEFT));
 163     lcd_write_reg(LTV_GATECTL1,  LTV_CLW(1));
 164     lcd_write_reg(LTV_GATECTL2,  (LTV_NW_INV_1LINE | LTV_DSC | LTV_FTI(3) | LTV_FWI(3)));
 165     lcd_write_reg(LTV_VBP,       0x5);
 166     lcd_write_reg(LTV_HBP,       0x1B);
 167     lcd_write_reg(LTV_SOTCTL,    LTV_SDT(2));
 168     lcd_write_reg(LTV_GAMMA(0),  0x203);
 169     lcd_write_reg(LTV_GAMMA(1),  0x302);
 170     lcd_write_reg(LTV_GAMMA(2),  0xC08);
 171     lcd_write_reg(LTV_GAMMA(3),  0xC08);
 172     lcd_write_reg(LTV_GAMMA(4),  0x707);
 173     lcd_write_reg(LTV_GAMMA(5),  0x707);
 174     lcd_write_reg(LTV_GAMMA(6),  0x104);
 175     lcd_write_reg(LTV_GAMMA(7),  0x306);
 176     lcd_write_reg(LTV_GAMMA(8),  0);
 177     lcd_write_reg(LTV_GAMMA(9),  0);
 178     sleep_ms(60);
 179
 180     lcd_write_reg(LTV_PWRCTL1,   (LTV_VCOMOUT_ENABLE | LTV_POWER_ON | LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
 181     lcd_write_reg(LTV_PWRCTL2,   (LTV_VCOML_VOLTAGE(17) | LTV_VCOMH_VOLTAGE(26))); /* VCOML=0,0625V VCOMH=1,21875V */
 182     sleep_ms(10);
 183
 184     if(!reset)
 185     {
 186         enable_venc(true);
 187         /* Re-enable video encoder */
 188         IO_VID_ENC_VMOD |= VENC_VMOD_VENC;
 189     }
 190     /* tell that we're on now */
 191     display_on = true;
 192 }
 193
 194 #ifdef HAVE_LCD_ENABLE
 195 static void lcd_display_off(void)
 196 {
 197     /* LQV shutdown sequence */
 198     lcd_write_reg(LTV_PWRCTL1,  (LTV_VCOMOUT_ENABLE | LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
 199     sleep_ms(20);
 200
 201     lcd_write_reg(LTV_PWRCTL1,  (LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
 202     lcd_write_reg(LTV_GATECTL2, (LTV_NW_INV_1LINE | LTV_FTI(3) | LTV_FWI(3)));
 203     lcd_write_reg(LTV_PWRCTL2,  0);
 204     sleep_ms(20);
 205
 206     lcd_write_reg(LTV_PWRCTL1,  0);
 207     sleep_ms(10);
 208     unsigned char temp[1];
 209     temp[0] = 0;
 210     spi_block_transfer(SPI_target_LTV250QV, temp, sizeof(temp), NULL, 0);
 211
 212     IO_GIO_BITCLR2 = (1 << 4);
 213     sleep_ms(5);
 214     IO_GIO_BITCLR2 = (1 << 7);
 215     sleep_ms(5);
 216     IO_GIO_BITCLR2 = (1 << 0);
 217     sleep_ms(2);
 218     IO_GIO_BITCLR2 = (1 << 8);
 219     IO_GIO_BITCLR2 = (1 << 5);
 220
 221     /* Disable main power */
 222     IO_GIO_BITCLR2 |= (1 << 3);
 223
 224     enable_venc(false);
 225
 226     display_on = false;
 227 }
 228
 229 void lcd_enable(bool on)
 230 {
 231 /* Disabled until properly working */
 232 return;
 233     if (on == display_on)
 234         return;
 235
 236     if (on)
 237     {
 238         lcd_display_on(false);  /* Turn on display */
 239         lcd_update();      /* Resync display */
 240         send_event(LCD_EVENT_ACTIVATION, NULL);
 241     }
 242     else
 243     {
 244         lcd_display_off();  /* Turn off display */
 245     }
 246 }
 247 #endif
 248
 249 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 250 bool lcd_active(void)
 251 {
 252     return display_on;
 253 }
 254 #endif
 255
 256 void lcd_set_direct_fb(bool yes)
 257 {
 258     unsigned int addr;
 259     direct_fb_access = yes;
 260     if(yes)
 261         addr = ((unsigned int)&lcd_framebuffer-CONFIG_SDRAM_START) / 32;
 262     else
 263         addr = ((unsigned int)FRAME-CONFIG_SDRAM_START) / 32;
 264     IO_OSD_OSDWINADH = addr >> 16;
 265     IO_OSD_OSDWIN0ADL = addr & 0xFFFF;
 266 }
 267
 268 bool lcd_get_direct_fb(void)
 269 {
 270     return direct_fb_access;
 271 }
 272
 273 static bool _lcd_enabled(void)
 274 {
 275     /* Needed to detect if VENC/LCD already is initialized... */
 276     if(IO_VID_ENC_VDCTL & VENC_VDCTL_VCLKE)
 277         return true;
 278     else if(!(IO_VID_ENC_VDCTL & VENC_VDCTL_YCDC))
 279         return true;
 280     else if(IO_CLK_MOD1 & CLK_MOD1_VENC)
 281         return true;
 282     else if(IO_CLK_MOD1 & CLK_MOD1_OSD)
 283         return true;
 284     else
 285         return false;
 286 }
 287
 288 void lcd_init_device(void)
 289 {
 290     if(!_lcd_enabled())
 291     {
 292         lcd_display_on(true);
 293
 294         enable_venc(true);
 295
 296         /* Set LCD values in Video Encoder */
 297         IO_VID_ENC_VMOD &= 0x8800; /* Clear all values */
 298         IO_VID_ENC_VMOD |= (VENC_VMOD_DACPD | VENC_VMOD_VMD | VENC_VMOD_ITLC | VENC_VMOD_VDMD(2)); /* set mode to RGB666 parallel 16 bit */
 299         IO_VID_ENC_VDCTL &= 0x8FE8; /* Clear all values */
 300         IO_VID_ENC_VDCTL |= (VENC_VDCTL_VCLKP | VENC_VDCTL_DOMD(2)),
 301         IO_VID_ENC_VDPRO = VENC_VDPRO_PFLTR;
 302         IO_VID_ENC_SYNCTL &= 0xE000; /* Clear all values */
 303         IO_VID_ENC_SYNCTL |= (VENC_SYNCTL_VPL | VENC_SYNCTL_HPL);
 304         IO_VID_ENC_HSDLY = 0;
 305         IO_VID_ENC_HSPLS = 0x12;
 306         IO_VID_ENC_HSTART = 0x1B;
 307         IO_VID_ENC_HVALID = 0x140;
 308         IO_VID_ENC_HINT = 0x168;
 309         IO_VID_ENC_VSDLY = 0;
 310         IO_VID_ENC_VSPLS = 3;
 311         IO_VID_ENC_VSTART = 5;
 312         IO_VID_ENC_VVALID = 0xF0;
 313         IO_VID_ENC_VINT = 0x118;
 314         IO_VID_ENC_RGBCTL &= 0x088; /* Clear all values */
 315         IO_VID_ENC_RGBCTL |= VENC_RGBCTL_DFLTR;
 316         IO_VID_ENC_RGBCLP = VENC_RGBCLP_UCLIP(0xFF);
 317         IO_VID_ENC_LCDOUT &= 0xFE00; /* Clear all values */
 318         IO_VID_ENC_LCDOUT |= (VENC_LCDOUT_OEE | VENC_LCDOUT_FIDS);
 319         IO_VID_ENC_DCLKCTL &= 0xC0C0; /* Clear all values */
 320         IO_VID_ENC_DCLKCTL |= VENC_DCLKCTL_DCKEC;
 321         IO_VID_ENC_DCLKPTN0 = 1;
 322         DM320_REG(0x0864) = 0; /* ???? */
 323     }
 324     else
 325         display_on = true;
 326
 327     /* Based on lcd-mr500.c from Catalin Patulea */
 328     /* Clear the Frame */
 329     memset16(FRAME, 0x0000, LCD_WIDTH*LCD_HEIGHT);
 330
 331     IO_OSD_MODE = 0x00ff;
 332     IO_OSD_VIDWINMD = 0x0002;
 333     IO_OSD_OSDWINMD0 = 0x2001;
 334     IO_OSD_OSDWINMD1 = 0x0002;
 335     IO_OSD_ATRMD = 0x0000;
 336     IO_OSD_RECTCUR = 0x0000;
 337
 338     unsigned int addr;
 339     IO_OSD_OSDWIN0OFST = (LCD_WIDTH*16) / 256;
 340     addr = ((unsigned int)FRAME-CONFIG_SDRAM_START) / 32;
 341     IO_OSD_OSDWINADH = addr >> 16;
 342     IO_OSD_OSDWIN0ADL = addr & 0xFFFF;
 343
 344 #ifndef ZEN_VISION
 345     IO_OSD_BASEPX = 26;
 346     IO_OSD_BASEPY = 5;
 347 #else
 348     IO_OSD_BASEPX = 80;
 349     IO_OSD_BASEPY = 0;
 350 #endif
 351
 352     IO_OSD_OSDWIN0XP = 0;
 353     IO_OSD_OSDWIN0YP = 0;
 354     IO_OSD_OSDWIN0XL = LCD_WIDTH;
 355     IO_OSD_OSDWIN0YL = LCD_HEIGHT;
 356
 357     IO_VID_ENC_VDCTL |= VENC_VDCTL_VCLKE; /* Enable VCLK */
 358     IO_VID_ENC_VMOD |= VENC_VMOD_VENC; /* Enable video encoder */
 359     IO_VID_ENC_SYNCTL |= VENC_SYNCTL_SYE; /* Enable sync output */
 360     IO_VID_ENC_VDCTL &= ~VENC_VDCTL_DOMD(3); /* Normal digital data output */
 361 }
 362
 363
 364 /*** Update functions ***/
 365
 366 /* Update a fraction of the display. */
 367 void lcd_update_rect(int x, int y, int width, int height)
 368 {
 369     register fb_data *dst, *src;
 370
 371     if (!display_on || direct_fb_access)
 372         return;
 373
 374     if (x + width > LCD_WIDTH)
 375         width = LCD_WIDTH - x; /* Clip right */
 376     if (x < 0)
 377         width += x, x = 0; /* Clip left */
 378     if (width <= 0)
 379     return; /* nothing left to do */
 380
 381     if (y + height > LCD_HEIGHT)
 382         height = LCD_HEIGHT - y; /* Clip bottom */
 383     if (y < 0)
 384         height += y, y = 0; /* Clip top */
 385     if (height <= 0)
 386         return; /* nothing left to do */
 387
 388 #if CONFIG_ORIENTATION == SCREEN_PORTRAIT
 389     dst = (fb_data *)FRAME + LCD_WIDTH*y + x;
 390     src = &lcd_framebuffer[y][x];
 391
 392     /* Copy part of the Rockbox framebuffer to the second framebuffer */
 393     if (width < LCD_WIDTH)
 394     {
 395         /* Not full width - do line-by-line */
 396         lcd_copy_buffer_rect(dst, src, width, height);
 397     }
 398     else
 399     {
 400         /* Full width - copy as one line */
 401         lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
 402     }
 403 #else
 404     src = &lcd_framebuffer[y][x];
 405
 406     register int xc, yc;
 407     register fb_data *start=FRAME + LCD_HEIGHT*(LCD_WIDTH-x-1) + y + 1;
 408
 409     for(yc=0;yc<height;yc++)
 410     {
 411         dst=start+yc;
 412         for(xc=0; xc<width; xc++)
 413         {
 414             *dst=*src++;
 415             dst-=LCD_HEIGHT;
 416         }
 417         src+=x;
 418     }
 419 #endif
 420 }
 421
 422 /* Update the display.
 423 This must be called after all other LCD functions that change the display. */
 424 void lcd_update(void)
 425 {
 426     if (!display_on || direct_fb_access)
 427         return;
 428 #if CONFIG_ORIENTATION == SCREEN_PORTRAIT
 429     lcd_copy_buffer_rect((fb_data *)FRAME, &lcd_framebuffer[0][0],
 430                          LCD_WIDTH*LCD_HEIGHT, 1);
 431 #else
 432     lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
 433 #endif
 434 }
 435
 436 /* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
 437 extern void lcd_write_yuv420_lines(fb_data *dst,
 438 unsigned char chroma_buf[LCD_HEIGHT/2*3],
 439 unsigned char const * const src[3],
 440 int width,
 441 int stride);
 442 /* Performance function to blit a YUV bitmap directly to the LCD */
 443 /* For the Gigabeat - show it rotated */
 444 /* So the LCD_WIDTH is now the height */
 445 void lcd_blit_yuv(unsigned char * const src[3],
 446                   int src_x, int src_y, int stride,
 447                   int x, int y, int width, int height)
 448 {
 449     /* Caches for chroma data so it only need be recalculated every other
 450        line */
 451     unsigned char chroma_buf[LCD_HEIGHT/2*3]; /* 480 bytes */
 452     unsigned char const * yuv_src[3];
 453     off_t z;
 454
 455     if (!display_on || direct_fb_access)
 456         return;
 457
 458     /* Sorry, but width and height must be >= 2 or else */
 459     width &= ~1;
 460     height >>= 1;
 461
 462     fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + (LCD_WIDTH - y) - 1;
 463
 464     z = stride*src_y;
 465     yuv_src[0] = src[0] + z + src_x;
 466     yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
 467     yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
 468
 469     do
 470     {
 471         lcd_write_yuv420_lines(dst, chroma_buf, yuv_src, width,
 472         stride);
 473
 474         yuv_src[0] += stride << 1; /* Skip down two luma lines */
 475         yuv_src[1] += stride >> 1; /* Skip down one chroma line */
 476         yuv_src[2] += stride >> 1;
 477         dst -= 2;
 478     }
 479     while (--height > 0);
 480 }
 481