release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/msm/lcdc_gordon.c

   1 /* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License version 2 and
   5  * only version 2 as published by the Free Software Foundation.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  15  * 02110-1301, USA.
  16  */
  17
  18 #include <linux/delay.h>
  19 #include <mach/gpio.h>
  20 #include "msm_fb.h"
  21
  22 /* registers */
  23 #define GORDON_REG_NOP          0x00
  24 #define GORDON_REG_IMGCTL1      0x10
  25 #define GORDON_REG_IMGCTL2      0x11
  26 #define GORDON_REG_IMGSET1      0x12
  27 #define GORDON_REG_IMGSET2      0x13
  28 #define GORDON_REG_IVBP1        0x14
  29 #define GORDON_REG_IHBP1        0x15
  30 #define GORDON_REG_IVNUM1       0x16
  31 #define GORDON_REG_IHNUM1       0x17
  32 #define GORDON_REG_IVBP2        0x18
  33 #define GORDON_REG_IHBP2        0x19
  34 #define GORDON_REG_IVNUM2       0x1A
  35 #define GORDON_REG_IHNUM2       0x1B
  36 #define GORDON_REG_LCDIFCTL1    0x30
  37 #define GORDON_REG_VALTRAN      0x31
  38 #define GORDON_REG_AVCTL        0x33
  39 #define GORDON_REG_LCDIFCTL2    0x34
  40 #define GORDON_REG_LCDIFCTL3    0x35
  41 #define GORDON_REG_LCDIFSET1    0x36
  42 #define GORDON_REG_PCCTL        0x3C
  43 #define GORDON_REG_TPARAM1      0x40
  44 #define GORDON_REG_TLCDIF1      0x41
  45 #define GORDON_REG_TSSPB_ST1    0x42
  46 #define GORDON_REG_TSSPB_ED1    0x43
  47 #define GORDON_REG_TSCK_ST1     0x44
  48 #define GORDON_REG_TSCK_WD1     0x45
  49 #define GORDON_REG_TGSPB_VST1   0x46
  50 #define GORDON_REG_TGSPB_VED1   0x47
  51 #define GORDON_REG_TGSPB_CH1    0x48
  52 #define GORDON_REG_TGCK_ST1     0x49
  53 #define GORDON_REG_TGCK_ED1     0x4A
  54 #define GORDON_REG_TPCTL_ST1    0x4B
  55 #define GORDON_REG_TPCTL_ED1    0x4C
  56 #define GORDON_REG_TPCHG_ED1    0x4D
  57 #define GORDON_REG_TCOM_CH1     0x4E
  58 #define GORDON_REG_THBP1        0x4F
  59 #define GORDON_REG_TPHCTL1      0x50
  60 #define GORDON_REG_EVPH1        0x51
  61 #define GORDON_REG_EVPL1        0x52
  62 #define GORDON_REG_EVNH1        0x53
  63 #define GORDON_REG_EVNL1        0x54
  64 #define GORDON_REG_TBIAS1       0x55
  65 #define GORDON_REG_TPARAM2      0x56
  66 #define GORDON_REG_TLCDIF2      0x57
  67 #define GORDON_REG_TSSPB_ST2    0x58
  68 #define GORDON_REG_TSSPB_ED2    0x59
  69 #define GORDON_REG_TSCK_ST2     0x5A
  70 #define GORDON_REG_TSCK_WD2     0x5B
  71 #define GORDON_REG_TGSPB_VST2   0x5C
  72 #define GORDON_REG_TGSPB_VED2   0x5D
  73 #define GORDON_REG_TGSPB_CH2    0x5E
  74 #define GORDON_REG_TGCK_ST2     0x5F
  75 #define GORDON_REG_TGCK_ED2     0x60
  76 #define GORDON_REG_TPCTL_ST2    0x61
  77 #define GORDON_REG_TPCTL_ED2    0x62
  78 #define GORDON_REG_TPCHG_ED2    0x63
  79 #define GORDON_REG_TCOM_CH2     0x64
  80 #define GORDON_REG_THBP2        0x65
  81 #define GORDON_REG_TPHCTL2      0x66
  82 #define GORDON_REG_POWCTL       0x80
  83
  84 static int lcdc_gordon_panel_off(struct platform_device *pdev);
  85
  86 static int spi_cs;
  87 static int spi_sclk;
  88 static int spi_sdo;
  89 static int spi_sdi;
  90 static int spi_dac;
  91 static unsigned char bit_shift[8] = { (1 << 7), /* MSB */
  92         (1 << 6),
  93         (1 << 5),
  94         (1 << 4),
  95         (1 << 3),
  96         (1 << 2),
  97         (1 << 1),
  98         (1 << 0)                               /* LSB */
  99 };
 100
 101 struct gordon_state_type{
 102         boolean disp_initialized;
 103         boolean display_on;
 104         boolean disp_powered_up;
 105 };
 106
 107 static struct gordon_state_type gordon_state = { 0 };
 108 static struct msm_panel_common_pdata *lcdc_gordon_pdata;
 109
 110 static void serigo(uint16 reg, uint8 data)
 111 {
 112         unsigned int tx_val = ((0x00FF & reg) << 8) | data;
 113         unsigned char i, val = 0;
 114
 115         /* Enable the Chip Select */
 116         gpio_set_value(spi_cs, 1);
 117         udelay(33);
 118
 119         /* Transmit it in two parts, Higher Byte first, then Lower Byte */
 120         val = (unsigned char)((tx_val & 0xFF00) >> 8);
 121
 122         /* Clock should be Low before entering ! */
 123         for (i = 0; i < 8; i++) {
 124                 /* #1: Drive the Data (High or Low) */
 125                 if (val & bit_shift[i])
 126                         gpio_set_value(spi_sdi, 1);
 127                 else
 128                         gpio_set_value(spi_sdi, 0);
 129
 130                 /* #2: Drive the Clk High and then Low */
 131                 udelay(33);
 132                 gpio_set_value(spi_sclk, 1);
 133                 udelay(33);
 134                 gpio_set_value(spi_sclk, 0);
 135         }
 136
 137         /* Idle state of SDO (MOSI) is Low */
 138         gpio_set_value(spi_sdi, 0);
 139         /* ..then Lower Byte */
 140         val = (uint8) (tx_val & 0x00FF);
 141         /* Before we enter here the Clock should be Low ! */
 142
 143         for (i = 0; i < 8; i++) {
 144                 /* #1: Drive the Data (High or Low) */
 145                 if (val & bit_shift[i])
 146                         gpio_set_value(spi_sdi, 1);
 147                 else
 148                         gpio_set_value(spi_sdi, 0);
 149
 150                 /* #2: Drive the Clk High and then Low */
 151                 udelay(33);
 152
 153                 gpio_set_value(spi_sclk, 1);
 154                 udelay(33);
 155                 gpio_set_value(spi_sclk, 0);
 156         }
 157
 158         /* Idle state of SDO (MOSI) is Low */
 159         gpio_set_value(spi_sdi, 0);
 160
 161         /* Now Disable the Chip Select */
 162         udelay(33);
 163         gpio_set_value(spi_cs, 0);
 164 }
 165
 166 static void spi_init(void)
 167 {
 168         /* Setting the Default GPIO's */
 169         spi_sclk = *(lcdc_gordon_pdata->gpio_num);
 170         spi_cs   = *(lcdc_gordon_pdata->gpio_num + 1);
 171         spi_sdi  = *(lcdc_gordon_pdata->gpio_num + 2);
 172         spi_sdo  = *(lcdc_gordon_pdata->gpio_num + 3);
 173
 174         /* Set the output so that we dont disturb the slave device */
 175         gpio_set_value(spi_sclk, 0);
 176         gpio_set_value(spi_sdi, 0);
 177
 178         /* Set the Chip Select De-asserted */
 179         gpio_set_value(spi_cs, 0);
 180
 181 }
 182
 183 static void gordon_disp_powerup(void)
 184 {
 185         if (!gordon_state.disp_powered_up && !gordon_state.display_on) {
 186                 /* Reset the hardware first */
 187                 /* Include DAC power up implementation here */
 188               gordon_state.disp_powered_up = TRUE;
 189         }
 190 }
 191
 192 static void gordon_init(void)
 193 {
 194         /* Image interface settings */
 195         serigo(GORDON_REG_IMGCTL2, 0x00);
 196         serigo(GORDON_REG_IMGSET1, 0x00);
 197
 198         /* Exchange the RGB signal for J510(Softbank mobile) */
 199         serigo(GORDON_REG_IMGSET2, 0x12);
 200         serigo(GORDON_REG_LCDIFSET1, 0x00);
 201
 202         /* Pre-charge settings */
 203         serigo(GORDON_REG_PCCTL, 0x09);
 204         serigo(GORDON_REG_LCDIFCTL2, 0x7B);
 205
 206         mdelay(1);
 207 }
 208
 209 static void gordon_disp_on(void)
 210 {
 211         if (gordon_state.disp_powered_up && !gordon_state.display_on) {
 212                 gordon_init();
 213                 mdelay(20);
 214                 /* gordon_dispmode setting */
 215                 serigo(GORDON_REG_TPARAM1, 0x30);
 216                 serigo(GORDON_REG_TLCDIF1, 0x00);
 217                 serigo(GORDON_REG_TSSPB_ST1, 0x8B);
 218                 serigo(GORDON_REG_TSSPB_ED1, 0x93);
 219                 serigo(GORDON_REG_TSCK_ST1, 0x88);
 220                 serigo(GORDON_REG_TSCK_WD1, 0x00);
 221                 serigo(GORDON_REG_TGSPB_VST1, 0x01);
 222                 serigo(GORDON_REG_TGSPB_VED1, 0x02);
 223                 serigo(GORDON_REG_TGSPB_CH1, 0x5E);
 224                 serigo(GORDON_REG_TGCK_ST1, 0x80);
 225                 serigo(GORDON_REG_TGCK_ED1, 0x3C);
 226                 serigo(GORDON_REG_TPCTL_ST1, 0x50);
 227                 serigo(GORDON_REG_TPCTL_ED1, 0x74);
 228                 serigo(GORDON_REG_TPCHG_ED1, 0x78);
 229                 serigo(GORDON_REG_TCOM_CH1, 0x50);
 230                 serigo(GORDON_REG_THBP1, 0x84);
 231                 serigo(GORDON_REG_TPHCTL1, 0x00);
 232                 serigo(GORDON_REG_EVPH1, 0x70);
 233                 serigo(GORDON_REG_EVPL1, 0x64);
 234                 serigo(GORDON_REG_EVNH1, 0x56);
 235                 serigo(GORDON_REG_EVNL1, 0x48);
 236                 serigo(GORDON_REG_TBIAS1, 0x88);
 237
 238                 /* QVGA settings */
 239                 serigo(GORDON_REG_TPARAM2, 0x28);
 240                 serigo(GORDON_REG_TLCDIF2, 0x14);
 241                 serigo(GORDON_REG_TSSPB_ST2, 0x49);
 242                 serigo(GORDON_REG_TSSPB_ED2, 0x4B);
 243                 serigo(GORDON_REG_TSCK_ST2, 0x4A);
 244                 serigo(GORDON_REG_TSCK_WD2, 0x02);
 245                 serigo(GORDON_REG_TGSPB_VST2, 0x02);
 246                 serigo(GORDON_REG_TGSPB_VED2, 0x03);
 247                 serigo(GORDON_REG_TGSPB_CH2, 0x2F);
 248                 serigo(GORDON_REG_TGCK_ST2, 0x40);
 249                 serigo(GORDON_REG_TGCK_ED2, 0x1E);
 250                 serigo(GORDON_REG_TPCTL_ST2, 0x2C);
 251                 serigo(GORDON_REG_TPCTL_ED2, 0x3A);
 252                 serigo(GORDON_REG_TPCHG_ED2, 0x3C);
 253                 serigo(GORDON_REG_TCOM_CH2, 0x28);
 254                 serigo(GORDON_REG_THBP2, 0x4D);
 255                 serigo(GORDON_REG_TPHCTL2, 0x1A);
 256
 257                 /* VGA settings */
 258                 serigo(GORDON_REG_IVBP1, 0x02);
 259                 serigo(GORDON_REG_IHBP1, 0x90);
 260                 serigo(GORDON_REG_IVNUM1, 0xA0);
 261                 serigo(GORDON_REG_IHNUM1, 0x78);
 262
 263                 /* QVGA settings */
 264                 serigo(GORDON_REG_IVBP2, 0x02);
 265                 serigo(GORDON_REG_IHBP2, 0x48);
 266                 serigo(GORDON_REG_IVNUM2, 0x50);
 267                 serigo(GORDON_REG_IHNUM2, 0x3C);
 268
 269                 /* Gordon Charge pump settings and ON */
 270                 serigo(GORDON_REG_POWCTL, 0x03);
 271                 mdelay(15);
 272                 serigo(GORDON_REG_POWCTL, 0x07);
 273                 mdelay(15);
 274
 275                 serigo(GORDON_REG_POWCTL, 0x0F);
 276                 mdelay(15);
 277
 278                 serigo(GORDON_REG_AVCTL, 0x03);
 279                 mdelay(15);
 280
 281                 serigo(GORDON_REG_POWCTL, 0x1F);
 282                 mdelay(15);
 283
 284                 serigo(GORDON_REG_POWCTL, 0x5F);
 285                 mdelay(15);
 286
 287                 serigo(GORDON_REG_POWCTL, 0x7F);
 288                 mdelay(15);
 289
 290                 serigo(GORDON_REG_LCDIFCTL1, 0x02);
 291                 mdelay(15);
 292
 293                 serigo(GORDON_REG_IMGCTL1, 0x00);
 294                 mdelay(15);
 295
 296                 serigo(GORDON_REG_LCDIFCTL3, 0x00);
 297                 mdelay(15);
 298
 299                 serigo(GORDON_REG_VALTRAN, 0x01);
 300                 mdelay(15);
 301
 302                 serigo(GORDON_REG_LCDIFCTL1, 0x03);
 303                 mdelay(1);
 304                 gordon_state.display_on = TRUE;
 305         }
 306 }
 307
 308 static int lcdc_gordon_panel_on(struct platform_device *pdev)
 309 {
 310         if (!gordon_state.disp_initialized) {
 311                 /* Configure reset GPIO that drives DAC */
 312                 lcdc_gordon_pdata->panel_config_gpio(1);
 313                 spi_dac = *(lcdc_gordon_pdata->gpio_num + 4);
 314                 gpio_set_value(spi_dac, 0);
 315                 udelay(15);
 316                 gpio_set_value(spi_dac, 1);
 317                 spi_init();     /* LCD needs SPI */
 318                 gordon_disp_powerup();
 319                 gordon_disp_on();
 320                 gordon_state.disp_initialized = TRUE;
 321         }
 322         return 0;
 323 }
 324
 325 static int lcdc_gordon_panel_off(struct platform_device *pdev)
 326 {
 327         if (gordon_state.disp_powered_up && gordon_state.display_on) {
 328                 serigo(GORDON_REG_LCDIFCTL2, 0x7B);
 329                 serigo(GORDON_REG_VALTRAN, 0x01);
 330                 serigo(GORDON_REG_LCDIFCTL1, 0x02);
 331                 serigo(GORDON_REG_LCDIFCTL3, 0x01);
 332                 mdelay(20);
 333                 serigo(GORDON_REG_VALTRAN, 0x01);
 334                 serigo(GORDON_REG_IMGCTL1, 0x01);
 335                 serigo(GORDON_REG_LCDIFCTL1, 0x00);
 336                 mdelay(20);
 337
 338                 serigo(GORDON_REG_POWCTL, 0x1F);
 339                 mdelay(40);
 340
 341                 serigo(GORDON_REG_POWCTL, 0x07);
 342                 mdelay(40);
 343
 344                 serigo(GORDON_REG_POWCTL, 0x03);
 345                 mdelay(40);
 346
 347                 serigo(GORDON_REG_POWCTL, 0x00);
 348                 mdelay(40);
 349                 lcdc_gordon_pdata->panel_config_gpio(0);
 350                 gordon_state.display_on = FALSE;
 351                 gordon_state.disp_initialized = FALSE;
 352         }
 353         return 0;
 354 }
 355
 356 static void lcdc_gordon_set_backlight(struct msm_fb_data_type *mfd)
 357 {
 358                 int bl_level = mfd->bl_level;
 359
 360                 if (bl_level <= 1) {
 361                         /* keep back light OFF */
 362                         serigo(GORDON_REG_LCDIFCTL2, 0x0B);
 363                         udelay(15);
 364                         serigo(GORDON_REG_VALTRAN, 0x01);
 365                 } else {
 366                         /* keep back light ON */
 367                         serigo(GORDON_REG_LCDIFCTL2, 0x7B);
 368                         udelay(15);
 369                         serigo(GORDON_REG_VALTRAN, 0x01);
 370                 }
 371 }
 372
 373 static int __init gordon_probe(struct platform_device *pdev)
 374 {
 375         if (pdev->id == 0) {
 376                 lcdc_gordon_pdata = pdev->dev.platform_data;
 377                 return 0;
 378         }
 379         msm_fb_add_device(pdev);
 380         return 0;
 381 }
 382
 383 static struct platform_driver this_driver = {
 384         .probe  = gordon_probe,
 385         .driver = {
 386                 .name   = "lcdc_gordon_vga",
 387         },
 388 };
 389
 390 static struct msm_fb_panel_data gordon_panel_data = {
 391         .on = lcdc_gordon_panel_on,
 392         .off = lcdc_gordon_panel_off,
 393         .set_backlight = lcdc_gordon_set_backlight,
 394 };
 395
 396 static struct platform_device this_device = {
 397         .name   = "lcdc_gordon_vga",
 398         .id     = 1,
 399         .dev    = {
 400                 .platform_data = &gordon_panel_data,
 401         }
 402 };
 403
 404 static int __init lcdc_gordon_panel_init(void)
 405 {
 406         int ret;
 407         struct msm_panel_info *pinfo;
 408
 409 #ifdef CONFIG_FB_MSM_TRY_MDDI_CATCH_LCDC_PRISM
 410         if (msm_fb_detect_client("lcdc_gordon_vga"))
 411                 return 0;
 412 #endif
 413         ret = platform_driver_register(&this_driver);
 414         if (ret)
 415                 return ret;
 416
 417         pinfo = &gordon_panel_data.panel_info;
 418         pinfo->xres = 480;
 419         pinfo->yres = 640;
 420         pinfo->type = LCDC_PANEL;
 421         pinfo->pdest = DISPLAY_1;
 422         pinfo->wait_cycle = 0;
 423         pinfo->bpp = 24;
 424         pinfo->fb_num = 2;
 425         pinfo->clk_rate = 24500000;
 426         pinfo->bl_max = 4;
 427         pinfo->bl_min = 1;
 428
 429         pinfo->lcdc.h_back_porch = 84;
 430         pinfo->lcdc.h_front_porch = 33;
 431         pinfo->lcdc.h_pulse_width = 60;
 432         pinfo->lcdc.v_back_porch = 0;
 433         pinfo->lcdc.v_front_porch = 2;
 434         pinfo->lcdc.v_pulse_width = 2;
 435         pinfo->lcdc.border_clr = 0;     /* blk */
 436         pinfo->lcdc.underflow_clr = 0xff;       /* blue */
 437         pinfo->lcdc.hsync_skew = 0;
 438
 439         ret = platform_device_register(&this_device);
 440         if (ret)
 441                 platform_driver_unregister(&this_driver);
 442
 443         return ret;
 444 }
 445
 446 module_init(lcdc_gordon_panel_init);