drivers/video/omap2/dss/hdmi.c

   1 /*
   2  * hdmi.c
   3  *
   4  * HDMI interface DSS driver setting for TI's OMAP4 family of processor.
   5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
   6  * Authors: Yong Zhi
   7  *      Mythri pk <mythripk@ti.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License version 2 as published by
  11  * the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along with
  19  * this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #define DSS_SUBSYS_NAME "HDMI"
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/err.h>
  27 #include <linux/io.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/mutex.h>
  30 #include <linux/delay.h>
  31 #include <linux/string.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/pm_runtime.h>
  34 #include <linux/clk.h>
  35 #include <linux/gpio.h>
  36 #include <linux/regulator/consumer.h>
  37 #include <video/omapdss.h>
  38
  39 #include "ti_hdmi.h"
  40 #include "dss.h"
  41 #include "dss_features.h"
  42
  43 #define HDMI_WP                 0x0
  44 #define HDMI_CORE_SYS           0x400
  45 #define HDMI_CORE_AV            0x900
  46 #define HDMI_PLLCTRL            0x200
  47 #define HDMI_PHY                0x300
  48
  49 /* HDMI EDID Length move this */
  50 #define HDMI_EDID_MAX_LENGTH                    256
  51 #define EDID_TIMING_DESCRIPTOR_SIZE             0x12
  52 #define EDID_DESCRIPTOR_BLOCK0_ADDRESS          0x36
  53 #define EDID_DESCRIPTOR_BLOCK1_ADDRESS          0x80
  54 #define EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR      4
  55 #define EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR      4
  56
  57 #define HDMI_DEFAULT_REGN 16
  58 #define HDMI_DEFAULT_REGM2 1
  59
  60 static struct {
  61         struct mutex lock;
  62         struct platform_device *pdev;
  63
  64         struct hdmi_ip_data ip_data;
  65
  66         struct clk *sys_clk;
  67         struct regulator *vdda_hdmi_dac_reg;
  68
  69         int ct_cp_hpd_gpio;
  70         int ls_oe_gpio;
  71         int hpd_gpio;
  72
  73         struct omap_dss_device output;
  74 } hdmi;
  75
  76 /*
  77  * Logic for the below structure :
  78  * user enters the CEA or VESA timings by specifying the HDMI/DVI code.
  79  * There is a correspondence between CEA/VESA timing and code, please
  80  * refer to section 6.3 in HDMI 1.3 specification for timing code.
  81  *
  82  * In the below structure, cea_vesa_timings corresponds to all OMAP4
  83  * supported CEA and VESA timing values.code_cea corresponds to the CEA
  84  * code, It is used to get the timing from cea_vesa_timing array.Similarly
  85  * with code_vesa. Code_index is used for back mapping, that is once EDID
  86  * is read from the TV, EDID is parsed to find the timing values and then
  87  * map it to corresponding CEA or VESA index.
  88  */
  89
  90 static const struct hdmi_config cea_timings[] = {
  91         {
  92                 { 640, 480, 25200, 96, 16, 48, 2, 10, 33,
  93                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
  94                         false, },
  95                 { 1, HDMI_HDMI },
  96         },
  97         {
  98                 { 720, 480, 27027, 62, 16, 60, 6, 9, 30,
  99                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 100                         false, },
 101                 { 2, HDMI_HDMI },
 102         },
 103         {
 104                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
 105                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 106                         false, },
 107                 { 4, HDMI_HDMI },
 108         },
 109         {
 110                 { 1920, 540, 74250, 44, 88, 148, 5, 2, 15,
 111                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 112                         true, },
 113                 { 5, HDMI_HDMI },
 114         },
 115         {
 116                 { 1440, 240, 27027, 124, 38, 114, 3, 4, 15,
 117                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 118                         true, },
 119                 { 6, HDMI_HDMI },
 120         },
 121         {
 122                 { 1920, 1080, 148500, 44, 88, 148, 5, 4, 36,
 123                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 124                         false, },
 125                 { 16, HDMI_HDMI },
 126         },
 127         {
 128                 { 720, 576, 27000, 64, 12, 68, 5, 5, 39,
 129                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 130                         false, },
 131                 { 17, HDMI_HDMI },
 132         },
 133         {
 134                 { 1280, 720, 74250, 40, 440, 220, 5, 5, 20,
 135                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 136                         false, },
 137                 { 19, HDMI_HDMI },
 138         },
 139         {
 140                 { 1920, 540, 74250, 44, 528, 148, 5, 2, 15,
 141                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 142                         true, },
 143                 { 20, HDMI_HDMI },
 144         },
 145         {
 146                 { 1440, 288, 27000, 126, 24, 138, 3, 2, 19,
 147                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 148                         true, },
 149                 { 21, HDMI_HDMI },
 150         },
 151         {
 152                 { 1440, 576, 54000, 128, 24, 136, 5, 5, 39,
 153                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 154                         false, },
 155                 { 29, HDMI_HDMI },
 156         },
 157         {
 158                 { 1920, 1080, 148500, 44, 528, 148, 5, 4, 36,
 159                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 160                         false, },
 161                 { 31, HDMI_HDMI },
 162         },
 163         {
 164                 { 1920, 1080, 74250, 44, 638, 148, 5, 4, 36,
 165                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 166                         false, },
 167                 { 32, HDMI_HDMI },
 168         },
 169         {
 170                 { 2880, 480, 108108, 248, 64, 240, 6, 9, 30,
 171                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 172                         false, },
 173                 { 35, HDMI_HDMI },
 174         },
 175         {
 176                 { 2880, 576, 108000, 256, 48, 272, 5, 5, 39,
 177                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 178                         false, },
 179                 { 37, HDMI_HDMI },
 180         },
 181 };
 182
 183 static const struct hdmi_config vesa_timings[] = {
 184 /* VESA From Here */
 185         {
 186                 { 640, 480, 25175, 96, 16, 48, 2, 11, 31,
 187                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 188                         false, },
 189                 { 4, HDMI_DVI },
 190         },
 191         {
 192                 { 800, 600, 40000, 128, 40, 88, 4, 1, 23,
 193                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 194                         false, },
 195                 { 9, HDMI_DVI },
 196         },
 197         {
 198                 { 848, 480, 33750, 112, 16, 112, 8, 6, 23,
 199                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 200                         false, },
 201                 { 0xE, HDMI_DVI },
 202         },
 203         {
 204                 { 1280, 768, 79500, 128, 64, 192, 7, 3, 20,
 205                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 206                         false, },
 207                 { 0x17, HDMI_DVI },
 208         },
 209         {
 210                 { 1280, 800, 83500, 128, 72, 200, 6, 3, 22,
 211                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 212                         false, },
 213                 { 0x1C, HDMI_DVI },
 214         },
 215         {
 216                 { 1360, 768, 85500, 112, 64, 256, 6, 3, 18,
 217                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 218                         false, },
 219                 { 0x27, HDMI_DVI },
 220         },
 221         {
 222                 { 1280, 960, 108000, 112, 96, 312, 3, 1, 36,
 223                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 224                         false, },
 225                 { 0x20, HDMI_DVI },
 226         },
 227         {
 228                 { 1280, 1024, 108000, 112, 48, 248, 3, 1, 38,
 229                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 230                         false, },
 231                 { 0x23, HDMI_DVI },
 232         },
 233         {
 234                 { 1024, 768, 65000, 136, 24, 160, 6, 3, 29,
 235                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 236                         false, },
 237                 { 0x10, HDMI_DVI },
 238         },
 239         {
 240                 { 1400, 1050, 121750, 144, 88, 232, 4, 3, 32,
 241                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 242                         false, },
 243                 { 0x2A, HDMI_DVI },
 244         },
 245         {
 246                 { 1440, 900, 106500, 152, 80, 232, 6, 3, 25,
 247                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 248                         false, },
 249                 { 0x2F, HDMI_DVI },
 250         },
 251         {
 252                 { 1680, 1050, 146250, 176 , 104, 280, 6, 3, 30,
 253                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 254                         false, },
 255                 { 0x3A, HDMI_DVI },
 256         },
 257         {
 258                 { 1366, 768, 85500, 143, 70, 213, 3, 3, 24,
 259                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 260                         false, },
 261                 { 0x51, HDMI_DVI },
 262         },
 263         {
 264                 { 1920, 1080, 148500, 44, 148, 80, 5, 4, 36,
 265                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 266                         false, },
 267                 { 0x52, HDMI_DVI },
 268         },
 269         {
 270                 { 1280, 768, 68250, 32, 48, 80, 7, 3, 12,
 271                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 272                         false, },
 273                 { 0x16, HDMI_DVI },
 274         },
 275         {
 276                 { 1400, 1050, 101000, 32, 48, 80, 4, 3, 23,
 277                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 278                         false, },
 279                 { 0x29, HDMI_DVI },
 280         },
 281         {
 282                 { 1680, 1050, 119000, 32, 48, 80, 6, 3, 21,
 283                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 284                         false, },
 285                 { 0x39, HDMI_DVI },
 286         },
 287         {
 288                 { 1280, 800, 79500, 32, 48, 80, 6, 3, 14,
 289                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 290                         false, },
 291                 { 0x1B, HDMI_DVI },
 292         },
 293         {
 294                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
 295                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 296                         false, },
 297                 { 0x55, HDMI_DVI },
 298         },
 299         {
 300                 { 1920, 1200, 154000, 32, 48, 80, 6, 3, 26,
 301                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 302                         false, },
 303                 { 0x44, HDMI_DVI },
 304         },
 305 };
 306
 307 static int hdmi_runtime_get(void)
 308 {
 309         int r;
 310
 311         DSSDBG("hdmi_runtime_get\n");
 312
 313         r = pm_runtime_get_sync(&hdmi.pdev->dev);
 314         WARN_ON(r < 0);
 315         if (r < 0)
 316                 return r;
 317
 318         return 0;
 319 }
 320
 321 static void hdmi_runtime_put(void)
 322 {
 323         int r;
 324
 325         DSSDBG("hdmi_runtime_put\n");
 326
 327         r = pm_runtime_put_sync(&hdmi.pdev->dev);
 328         WARN_ON(r < 0 && r != -ENOSYS);
 329 }
 330
 331 static int hdmi_init_regulator(void)
 332 {
 333         struct regulator *reg;
 334
 335         if (hdmi.vdda_hdmi_dac_reg != NULL)
 336                 return 0;
 337
 338         reg = devm_regulator_get(&hdmi.pdev->dev, "vdda_hdmi_dac");
 339
 340         /* DT HACK: try VDAC to make omapdss work for o4 sdp/panda */
 341         if (IS_ERR(reg))
 342                 reg = devm_regulator_get(&hdmi.pdev->dev, "VDAC");
 343
 344         if (IS_ERR(reg)) {
 345                 DSSERR("can't get VDDA_HDMI_DAC regulator\n");
 346                 return PTR_ERR(reg);
 347         }
 348
 349         hdmi.vdda_hdmi_dac_reg = reg;
 350
 351         return 0;
 352 }
 353
 354 static int hdmi_init_display(struct omap_dss_device *dssdev)
 355 {
 356         int r;
 357
 358         struct gpio gpios[] = {
 359                 { hdmi.ct_cp_hpd_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd" },
 360                 { hdmi.ls_oe_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ls_oe" },
 361                 { hdmi.hpd_gpio, GPIOF_DIR_IN, "hdmi_hpd" },
 362         };
 363
 364         DSSDBG("init_display\n");
 365
 366         dss_init_hdmi_ip_ops(&hdmi.ip_data, omapdss_get_version());
 367
 368         r = hdmi_init_regulator();
 369         if (r)
 370                 return r;
 371
 372         r = gpio_request_array(gpios, ARRAY_SIZE(gpios));
 373         if (r)
 374                 return r;
 375
 376         return 0;
 377 }
 378
 379 static void hdmi_uninit_display(struct omap_dss_device *dssdev)
 380 {
 381         DSSDBG("uninit_display\n");
 382
 383         gpio_free(hdmi.ct_cp_hpd_gpio);
 384         gpio_free(hdmi.ls_oe_gpio);
 385         gpio_free(hdmi.hpd_gpio);
 386 }
 387
 388 static const struct hdmi_config *hdmi_find_timing(
 389                                         const struct hdmi_config *timings_arr,
 390                                         int len)
 391 {
 392         int i;
 393
 394         for (i = 0; i < len; i++) {
 395                 if (timings_arr[i].cm.code == hdmi.ip_data.cfg.cm.code)
 396                         return &timings_arr[i];
 397         }
 398         return NULL;
 399 }
 400
 401 static const struct hdmi_config *hdmi_get_timings(void)
 402 {
 403        const struct hdmi_config *arr;
 404        int len;
 405
 406        if (hdmi.ip_data.cfg.cm.mode == HDMI_DVI) {
 407                arr = vesa_timings;
 408                len = ARRAY_SIZE(vesa_timings);
 409        } else {
 410                arr = cea_timings;
 411                len = ARRAY_SIZE(cea_timings);
 412        }
 413
 414        return hdmi_find_timing(arr, len);
 415 }
 416
 417 static bool hdmi_timings_compare(struct omap_video_timings *timing1,
 418                                 const struct omap_video_timings *timing2)
 419 {
 420         int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync;
 421
 422         if ((DIV_ROUND_CLOSEST(timing2->pixel_clock, 1000) ==
 423                         DIV_ROUND_CLOSEST(timing1->pixel_clock, 1000)) &&
 424                 (timing2->x_res == timing1->x_res) &&
 425                 (timing2->y_res == timing1->y_res)) {
 426
 427                 timing2_hsync = timing2->hfp + timing2->hsw + timing2->hbp;
 428                 timing1_hsync = timing1->hfp + timing1->hsw + timing1->hbp;
 429                 timing2_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
 430                 timing1_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
 431
 432                 DSSDBG("timing1_hsync = %d timing1_vsync = %d"\
 433                         "timing2_hsync = %d timing2_vsync = %d\n",
 434                         timing1_hsync, timing1_vsync,
 435                         timing2_hsync, timing2_vsync);
 436
 437                 if ((timing1_hsync == timing2_hsync) &&
 438                         (timing1_vsync == timing2_vsync)) {
 439                         return true;
 440                 }
 441         }
 442         return false;
 443 }
 444
 445 static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing)
 446 {
 447         int i;
 448         struct hdmi_cm cm = {-1};
 449         DSSDBG("hdmi_get_code\n");
 450
 451         for (i = 0; i < ARRAY_SIZE(cea_timings); i++) {
 452                 if (hdmi_timings_compare(timing, &cea_timings[i].timings)) {
 453                         cm = cea_timings[i].cm;
 454                         goto end;
 455                 }
 456         }
 457         for (i = 0; i < ARRAY_SIZE(vesa_timings); i++) {
 458                 if (hdmi_timings_compare(timing, &vesa_timings[i].timings)) {
 459                         cm = vesa_timings[i].cm;
 460                         goto end;
 461                 }
 462         }
 463
 464 end:    return cm;
 465
 466 }
 467
 468 unsigned long hdmi_get_pixel_clock(void)
 469 {
 470         /* HDMI Pixel Clock in Mhz */
 471         return hdmi.ip_data.cfg.timings.pixel_clock * 1000;
 472 }
 473
 474 static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
 475                 struct hdmi_pll_info *pi)
 476 {
 477         unsigned long clkin, refclk;
 478         u32 mf;
 479
 480         clkin = clk_get_rate(hdmi.sys_clk) / 10000;
 481         /*
 482          * Input clock is predivided by N + 1
 483          * out put of which is reference clk
 484          */
 485
 486         pi->regn = HDMI_DEFAULT_REGN;
 487
 488         refclk = clkin / pi->regn;
 489
 490         pi->regm2 = HDMI_DEFAULT_REGM2;
 491
 492         /*
 493          * multiplier is pixel_clk/ref_clk
 494          * Multiplying by 100 to avoid fractional part removal
 495          */
 496         pi->regm = phy * pi->regm2 / refclk;
 497
 498         /*
 499          * fractional multiplier is remainder of the difference between
 500          * multiplier and actual phy(required pixel clock thus should be
 501          * multiplied by 2^18(262144) divided by the reference clock
 502          */
 503         mf = (phy - pi->regm / pi->regm2 * refclk) * 262144;
 504         pi->regmf = pi->regm2 * mf / refclk;
 505
 506         /*
 507          * Dcofreq should be set to 1 if required pixel clock
 508          * is greater than 1000MHz
 509          */
 510         pi->dcofreq = phy > 1000 * 100;
 511         pi->regsd = ((pi->regm * clkin / 10) / (pi->regn * 250) + 5) / 10;
 512
 513         /* Set the reference clock to sysclk reference */
 514         pi->refsel = HDMI_REFSEL_SYSCLK;
 515
 516         DSSDBG("M = %d Mf = %d\n", pi->regm, pi->regmf);
 517         DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd);
 518 }
 519
 520 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
 521 {
 522         int r;
 523
 524         gpio_set_value(hdmi.ct_cp_hpd_gpio, 1);
 525         gpio_set_value(hdmi.ls_oe_gpio, 1);
 526
 527         /* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */
 528         udelay(300);
 529
 530         r = regulator_enable(hdmi.vdda_hdmi_dac_reg);
 531         if (r)
 532                 goto err_vdac_enable;
 533
 534         r = hdmi_runtime_get();
 535         if (r)
 536                 goto err_runtime_get;
 537
 538         /* Make selection of HDMI in DSS */
 539         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 540
 541         return 0;
 542
 543 err_runtime_get:
 544         regulator_disable(hdmi.vdda_hdmi_dac_reg);
 545 err_vdac_enable:
 546         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
 547         gpio_set_value(hdmi.ls_oe_gpio, 0);
 548         return r;
 549 }
 550
 551 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
 552 {
 553         hdmi_runtime_put();
 554         regulator_disable(hdmi.vdda_hdmi_dac_reg);
 555         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
 556         gpio_set_value(hdmi.ls_oe_gpio, 0);
 557 }
 558
 559 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
 560 {
 561         int r;
 562         struct omap_video_timings *p;
 563         struct omap_overlay_manager *mgr = hdmi.output.manager;
 564         unsigned long phy;
 565
 566         r = hdmi_power_on_core(dssdev);
 567         if (r)
 568                 return r;
 569
 570         dss_mgr_disable(mgr);
 571
 572         p = &hdmi.ip_data.cfg.timings;
 573
 574         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 575
 576         phy = p->pixel_clock;
 577
 578         hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data);
 579
 580         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 581
 582         /* config the PLL and PHY hdmi_set_pll_pwrfirst */
 583         r = hdmi.ip_data.ops->pll_enable(&hdmi.ip_data);
 584         if (r) {
 585                 DSSDBG("Failed to lock PLL\n");
 586                 goto err_pll_enable;
 587         }
 588
 589         r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data);
 590         if (r) {
 591                 DSSDBG("Failed to start PHY\n");
 592                 goto err_phy_enable;
 593         }
 594
 595         hdmi.ip_data.ops->video_configure(&hdmi.ip_data);
 596
 597         /* bypass TV gamma table */
 598         dispc_enable_gamma_table(0);
 599
 600         /* tv size */
 601         dss_mgr_set_timings(mgr, p);
 602
 603         r = hdmi.ip_data.ops->video_enable(&hdmi.ip_data);
 604         if (r)
 605                 goto err_vid_enable;
 606
 607         r = dss_mgr_enable(mgr);
 608         if (r)
 609                 goto err_mgr_enable;
 610
 611         return 0;
 612
 613 err_mgr_enable:
 614         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 615 err_vid_enable:
 616         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
 617 err_phy_enable:
 618         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
 619 err_pll_enable:
 620         hdmi_power_off_core(dssdev);
 621         return -EIO;
 622 }
 623
 624 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
 625 {
 626         struct omap_overlay_manager *mgr = hdmi.output.manager;
 627
 628         dss_mgr_disable(mgr);
 629
 630         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 631         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
 632         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
 633
 634         hdmi_power_off_core(dssdev);
 635 }
 636
 637 int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
 638                                         struct omap_video_timings *timings)
 639 {
 640         struct hdmi_cm cm;
 641
 642         cm = hdmi_get_code(timings);
 643         if (cm.code == -1) {
 644                 return -EINVAL;
 645         }
 646
 647         return 0;
 648
 649 }
 650
 651 void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev,
 652                 struct omap_video_timings *timings)
 653 {
 654         struct hdmi_cm cm;
 655         const struct hdmi_config *t;
 656
 657         mutex_lock(&hdmi.lock);
 658
 659         cm = hdmi_get_code(timings);
 660         hdmi.ip_data.cfg.cm = cm;
 661
 662         t = hdmi_get_timings();
 663         if (t != NULL)
 664                 hdmi.ip_data.cfg = *t;
 665
 666         mutex_unlock(&hdmi.lock);
 667 }
 668
 669 static void hdmi_dump_regs(struct seq_file *s)
 670 {
 671         mutex_lock(&hdmi.lock);
 672
 673         if (hdmi_runtime_get()) {
 674                 mutex_unlock(&hdmi.lock);
 675                 return;
 676         }
 677
 678         hdmi.ip_data.ops->dump_wrapper(&hdmi.ip_data, s);
 679         hdmi.ip_data.ops->dump_pll(&hdmi.ip_data, s);
 680         hdmi.ip_data.ops->dump_phy(&hdmi.ip_data, s);
 681         hdmi.ip_data.ops->dump_core(&hdmi.ip_data, s);
 682
 683         hdmi_runtime_put();
 684         mutex_unlock(&hdmi.lock);
 685 }
 686
 687 int omapdss_hdmi_read_edid(u8 *buf, int len)
 688 {
 689         int r;
 690
 691         mutex_lock(&hdmi.lock);
 692
 693         r = hdmi_runtime_get();
 694         BUG_ON(r);
 695
 696         r = hdmi.ip_data.ops->read_edid(&hdmi.ip_data, buf, len);
 697
 698         hdmi_runtime_put();
 699         mutex_unlock(&hdmi.lock);
 700
 701         return r;
 702 }
 703
 704 bool omapdss_hdmi_detect(void)
 705 {
 706         int r;
 707
 708         mutex_lock(&hdmi.lock);
 709
 710         r = hdmi_runtime_get();
 711         BUG_ON(r);
 712
 713         r = hdmi.ip_data.ops->detect(&hdmi.ip_data);
 714
 715         hdmi_runtime_put();
 716         mutex_unlock(&hdmi.lock);
 717
 718         return r == 1;
 719 }
 720
 721 int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 722 {
 723         struct omap_dss_device *out = &hdmi.output;
 724         int r = 0;
 725
 726         DSSDBG("ENTER hdmi_display_enable\n");
 727
 728         mutex_lock(&hdmi.lock);
 729
 730         if (out == NULL || out->manager == NULL) {
 731                 DSSERR("failed to enable display: no output/manager\n");
 732                 r = -ENODEV;
 733                 goto err0;
 734         }
 735
 736         hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
 737
 738         r = hdmi_power_on_full(dssdev);
 739         if (r) {
 740                 DSSERR("failed to power on device\n");
 741                 goto err0;
 742         }
 743
 744         mutex_unlock(&hdmi.lock);
 745         return 0;
 746
 747 err0:
 748         mutex_unlock(&hdmi.lock);
 749         return r;
 750 }
 751
 752 void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev)
 753 {
 754         DSSDBG("Enter hdmi_display_disable\n");
 755
 756         mutex_lock(&hdmi.lock);
 757
 758         hdmi_power_off_full(dssdev);
 759
 760         mutex_unlock(&hdmi.lock);
 761 }
 762
 763 int omapdss_hdmi_core_enable(struct omap_dss_device *dssdev)
 764 {
 765         int r = 0;
 766
 767         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
 768
 769         mutex_lock(&hdmi.lock);
 770
 771         hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
 772
 773         r = hdmi_power_on_core(dssdev);
 774         if (r) {
 775                 DSSERR("failed to power on device\n");
 776                 goto err0;
 777         }
 778
 779         mutex_unlock(&hdmi.lock);
 780         return 0;
 781
 782 err0:
 783         mutex_unlock(&hdmi.lock);
 784         return r;
 785 }
 786
 787 void omapdss_hdmi_core_disable(struct omap_dss_device *dssdev)
 788 {
 789         DSSDBG("Enter omapdss_hdmi_core_disable\n");
 790
 791         mutex_lock(&hdmi.lock);
 792
 793         hdmi_power_off_core(dssdev);
 794
 795         mutex_unlock(&hdmi.lock);
 796 }
 797
 798 static int hdmi_get_clocks(struct platform_device *pdev)
 799 {
 800         struct clk *clk;
 801
 802         clk = devm_clk_get(&pdev->dev, "sys_clk");
 803         if (IS_ERR(clk)) {
 804                 DSSERR("can't get sys_clk\n");
 805                 return PTR_ERR(clk);
 806         }
 807
 808         hdmi.sys_clk = clk;
 809
 810         return 0;
 811 }
 812
 813 #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
 814 int hdmi_compute_acr(u32 sample_freq, u32 *n, u32 *cts)
 815 {
 816         u32 deep_color;
 817         bool deep_color_correct = false;
 818         u32 pclk = hdmi.ip_data.cfg.timings.pixel_clock;
 819
 820         if (n == NULL || cts == NULL)
 821                 return -EINVAL;
 822
 823         /* TODO: When implemented, query deep color mode here. */
 824         deep_color = 100;
 825
 826         /*
 827          * When using deep color, the default N value (as in the HDMI
 828          * specification) yields to an non-integer CTS. Hence, we
 829          * modify it while keeping the restrictions described in
 830          * section 7.2.1 of the HDMI 1.4a specification.
 831          */
 832         switch (sample_freq) {
 833         case 32000:
 834         case 48000:
 835         case 96000:
 836         case 192000:
 837                 if (deep_color == 125)
 838                         if (pclk == 27027 || pclk == 74250)
 839                                 deep_color_correct = true;
 840                 if (deep_color == 150)
 841                         if (pclk == 27027)
 842                                 deep_color_correct = true;
 843                 break;
 844         case 44100:
 845         case 88200:
 846         case 176400:
 847                 if (deep_color == 125)
 848                         if (pclk == 27027)
 849                                 deep_color_correct = true;
 850                 break;
 851         default:
 852                 return -EINVAL;
 853         }
 854
 855         if (deep_color_correct) {
 856                 switch (sample_freq) {
 857                 case 32000:
 858                         *n = 8192;
 859                         break;
 860                 case 44100:
 861                         *n = 12544;
 862                         break;
 863                 case 48000:
 864                         *n = 8192;
 865                         break;
 866                 case 88200:
 867                         *n = 25088;
 868                         break;
 869                 case 96000:
 870                         *n = 16384;
 871                         break;
 872                 case 176400:
 873                         *n = 50176;
 874                         break;
 875                 case 192000:
 876                         *n = 32768;
 877                         break;
 878                 default:
 879                         return -EINVAL;
 880                 }
 881         } else {
 882                 switch (sample_freq) {
 883                 case 32000:
 884                         *n = 4096;
 885                         break;
 886                 case 44100:
 887                         *n = 6272;
 888                         break;
 889                 case 48000:
 890                         *n = 6144;
 891                         break;
 892                 case 88200:
 893                         *n = 12544;
 894                         break;
 895                 case 96000:
 896                         *n = 12288;
 897                         break;
 898                 case 176400:
 899                         *n = 25088;
 900                         break;
 901                 case 192000:
 902                         *n = 24576;
 903                         break;
 904                 default:
 905                         return -EINVAL;
 906                 }
 907         }
 908         /* Calculate CTS. See HDMI 1.3a or 1.4a specifications */
 909         *cts = pclk * (*n / 128) * deep_color / (sample_freq / 10);
 910
 911         return 0;
 912 }
 913
 914 int hdmi_audio_enable(void)
 915 {
 916         DSSDBG("audio_enable\n");
 917
 918         return hdmi.ip_data.ops->audio_enable(&hdmi.ip_data);
 919 }
 920
 921 void hdmi_audio_disable(void)
 922 {
 923         DSSDBG("audio_disable\n");
 924
 925         hdmi.ip_data.ops->audio_disable(&hdmi.ip_data);
 926 }
 927
 928 int hdmi_audio_start(void)
 929 {
 930         DSSDBG("audio_start\n");
 931
 932         return hdmi.ip_data.ops->audio_start(&hdmi.ip_data);
 933 }
 934
 935 void hdmi_audio_stop(void)
 936 {
 937         DSSDBG("audio_stop\n");
 938
 939         hdmi.ip_data.ops->audio_stop(&hdmi.ip_data);
 940 }
 941
 942 bool hdmi_mode_has_audio(void)
 943 {
 944         if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI)
 945                 return true;
 946         else
 947                 return false;
 948 }
 949
 950 int hdmi_audio_config(struct omap_dss_audio *audio)
 951 {
 952         return hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio);
 953 }
 954
 955 #endif
 956
 957 static struct omap_dss_device *hdmi_find_dssdev(struct platform_device *pdev)
 958 {
 959         struct omap_dss_board_info *pdata = pdev->dev.platform_data;
 960         const char *def_disp_name = omapdss_get_default_display_name();
 961         struct omap_dss_device *def_dssdev;
 962         int i;
 963
 964         def_dssdev = NULL;
 965
 966         for (i = 0; i < pdata->num_devices; ++i) {
 967                 struct omap_dss_device *dssdev = pdata->devices[i];
 968
 969                 if (dssdev->type != OMAP_DISPLAY_TYPE_HDMI)
 970                         continue;
 971
 972                 if (def_dssdev == NULL)
 973                         def_dssdev = dssdev;
 974
 975                 if (def_disp_name != NULL &&
 976                                 strcmp(dssdev->name, def_disp_name) == 0) {
 977                         def_dssdev = dssdev;
 978                         break;
 979                 }
 980         }
 981
 982         return def_dssdev;
 983 }
 984
 985 static int hdmi_probe_pdata(struct platform_device *pdev)
 986 {
 987         struct omap_dss_device *plat_dssdev;
 988         struct omap_dss_device *dssdev;
 989         struct omap_dss_hdmi_data *priv;
 990         int r;
 991
 992         plat_dssdev = hdmi_find_dssdev(pdev);
 993
 994         if (!plat_dssdev)
 995                 return 0;
 996
 997         dssdev = dss_alloc_and_init_device(&pdev->dev);
 998         if (!dssdev)
 999                 return -ENOMEM;
1000
1001         dss_copy_device_pdata(dssdev, plat_dssdev);
1002
1003         priv = dssdev->data;
1004
1005         hdmi.ct_cp_hpd_gpio = priv->ct_cp_hpd_gpio;
1006         hdmi.ls_oe_gpio = priv->ls_oe_gpio;
1007         hdmi.hpd_gpio = priv->hpd_gpio;
1008
1009         r = hdmi_init_display(dssdev);
1010         if (r) {
1011                 DSSERR("device %s init failed: %d\n", dssdev->name, r);
1012                 dss_put_device(dssdev);
1013                 return r;
1014         }
1015
1016         r = omapdss_output_set_device(&hdmi.output, dssdev);
1017         if (r) {
1018                 DSSERR("failed to connect output to new device: %s\n",
1019                                 dssdev->name);
1020                 dss_put_device(dssdev);
1021                 return r;
1022         }
1023
1024         r = dss_add_device(dssdev);
1025         if (r) {
1026                 DSSERR("device %s register failed: %d\n", dssdev->name, r);
1027                 omapdss_output_unset_device(&hdmi.output);
1028                 hdmi_uninit_display(dssdev);
1029                 dss_put_device(dssdev);
1030                 return r;
1031         }
1032
1033         return 0;
1034 }
1035
1036 static void hdmi_init_output(struct platform_device *pdev)
1037 {
1038         struct omap_dss_device *out = &hdmi.output;
1039
1040         out->dev = &pdev->dev;
1041         out->id = OMAP_DSS_OUTPUT_HDMI;
1042         out->output_type = OMAP_DISPLAY_TYPE_HDMI;
1043         out->name = "hdmi.0";
1044         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
1045         out->owner = THIS_MODULE;
1046
1047         dss_register_output(out);
1048 }
1049
1050 static void __exit hdmi_uninit_output(struct platform_device *pdev)
1051 {
1052         struct omap_dss_device *out = &hdmi.output;
1053
1054         dss_unregister_output(out);
1055 }
1056
1057 /* HDMI HW IP initialisation */
1058 static int omapdss_hdmihw_probe(struct platform_device *pdev)
1059 {
1060         struct resource *res;
1061         int r;
1062
1063         hdmi.pdev = pdev;
1064
1065         mutex_init(&hdmi.lock);
1066         mutex_init(&hdmi.ip_data.lock);
1067
1068         res = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0);
1069
1070         /* Base address taken from platform */
1071         hdmi.ip_data.base_wp = devm_ioremap_resource(&pdev->dev, res);
1072         if (IS_ERR(hdmi.ip_data.base_wp))
1073                 return PTR_ERR(hdmi.ip_data.base_wp);
1074
1075         r = hdmi_get_clocks(pdev);
1076         if (r) {
1077                 DSSERR("can't get clocks\n");
1078                 return r;
1079         }
1080
1081         pm_runtime_enable(&pdev->dev);
1082
1083         hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS;
1084         hdmi.ip_data.core_av_offset = HDMI_CORE_AV;
1085         hdmi.ip_data.pll_offset = HDMI_PLLCTRL;
1086         hdmi.ip_data.phy_offset = HDMI_PHY;
1087
1088         hdmi_init_output(pdev);
1089
1090         r = hdmi_panel_init();
1091         if (r) {
1092                 DSSERR("can't init panel\n");
1093                 return r;
1094         }
1095
1096         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
1097
1098         if (pdev->dev.platform_data) {
1099                 r = hdmi_probe_pdata(pdev);
1100                 if (r)
1101                         goto err_probe;
1102         }
1103
1104         return 0;
1105
1106 err_probe:
1107         hdmi_panel_exit();
1108         hdmi_uninit_output(pdev);
1109         pm_runtime_disable(&pdev->dev);
1110         return r;
1111 }
1112
1113 static int __exit hdmi_remove_child(struct device *dev, void *data)
1114 {
1115         struct omap_dss_device *dssdev = to_dss_device(dev);
1116         hdmi_uninit_display(dssdev);
1117         return 0;
1118 }
1119
1120 static int __exit omapdss_hdmihw_remove(struct platform_device *pdev)
1121 {
1122         device_for_each_child(&pdev->dev, NULL, hdmi_remove_child);
1123
1124         dss_unregister_child_devices(&pdev->dev);
1125
1126         hdmi_panel_exit();
1127
1128         hdmi_uninit_output(pdev);
1129
1130         pm_runtime_disable(&pdev->dev);
1131
1132         return 0;
1133 }
1134
1135 static int hdmi_runtime_suspend(struct device *dev)
1136 {
1137         clk_disable_unprepare(hdmi.sys_clk);
1138
1139         dispc_runtime_put();
1140
1141         return 0;
1142 }
1143
1144 static int hdmi_runtime_resume(struct device *dev)
1145 {
1146         int r;
1147
1148         r = dispc_runtime_get();
1149         if (r < 0)
1150                 return r;
1151
1152         clk_prepare_enable(hdmi.sys_clk);
1153
1154         return 0;
1155 }
1156
1157 static const struct dev_pm_ops hdmi_pm_ops = {
1158         .runtime_suspend = hdmi_runtime_suspend,
1159         .runtime_resume = hdmi_runtime_resume,
1160 };
1161
1162 static struct platform_driver omapdss_hdmihw_driver = {
1163         .probe          = omapdss_hdmihw_probe,
1164         .remove         = __exit_p(omapdss_hdmihw_remove),
1165         .driver         = {
1166                 .name   = "omapdss_hdmi",
1167                 .owner  = THIS_MODULE,
1168                 .pm     = &hdmi_pm_ops,
1169         },
1170 };
1171
1172 int __init hdmi_init_platform_driver(void)
1173 {
1174         return platform_driver_register(&omapdss_hdmihw_driver);
1175 }
1176
1177 void __exit hdmi_uninit_platform_driver(void)
1178 {
1179         platform_driver_unregister(&omapdss_hdmihw_driver);
1180 }