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         struct hdmi_ip_data ip_data;
  64
  65         struct clk *sys_clk;
  66         struct regulator *vdda_hdmi_dac_reg;
  67
  68         int ct_cp_hpd_gpio;
  69         int ls_oe_gpio;
  70         int hpd_gpio;
  71
  72         struct omap_dss_output output;
  73 } hdmi;
  74
  75 /*
  76  * Logic for the below structure :
  77  * user enters the CEA or VESA timings by specifying the HDMI/DVI code.
  78  * There is a correspondence between CEA/VESA timing and code, please
  79  * refer to section 6.3 in HDMI 1.3 specification for timing code.
  80  *
  81  * In the below structure, cea_vesa_timings corresponds to all OMAP4
  82  * supported CEA and VESA timing values.code_cea corresponds to the CEA
  83  * code, It is used to get the timing from cea_vesa_timing array.Similarly
  84  * with code_vesa. Code_index is used for back mapping, that is once EDID
  85  * is read from the TV, EDID is parsed to find the timing values and then
  86  * map it to corresponding CEA or VESA index.
  87  */
  88
  89 static const struct hdmi_config cea_timings[] = {
  90         {
  91                 { 640, 480, 25200, 96, 16, 48, 2, 10, 33,
  92                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
  93                         false, },
  94                 { 1, HDMI_HDMI },
  95         },
  96         {
  97                 { 720, 480, 27027, 62, 16, 60, 6, 9, 30,
  98                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
  99                         false, },
 100                 { 2, HDMI_HDMI },
 101         },
 102         {
 103                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
 104                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 105                         false, },
 106                 { 4, HDMI_HDMI },
 107         },
 108         {
 109                 { 1920, 540, 74250, 44, 88, 148, 5, 2, 15,
 110                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 111                         true, },
 112                 { 5, HDMI_HDMI },
 113         },
 114         {
 115                 { 1440, 240, 27027, 124, 38, 114, 3, 4, 15,
 116                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 117                         true, },
 118                 { 6, HDMI_HDMI },
 119         },
 120         {
 121                 { 1920, 1080, 148500, 44, 88, 148, 5, 4, 36,
 122                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 123                         false, },
 124                 { 16, HDMI_HDMI },
 125         },
 126         {
 127                 { 720, 576, 27000, 64, 12, 68, 5, 5, 39,
 128                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 129                         false, },
 130                 { 17, HDMI_HDMI },
 131         },
 132         {
 133                 { 1280, 720, 74250, 40, 440, 220, 5, 5, 20,
 134                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 135                         false, },
 136                 { 19, HDMI_HDMI },
 137         },
 138         {
 139                 { 1920, 540, 74250, 44, 528, 148, 5, 2, 15,
 140                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 141                         true, },
 142                 { 20, HDMI_HDMI },
 143         },
 144         {
 145                 { 1440, 288, 27000, 126, 24, 138, 3, 2, 19,
 146                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 147                         true, },
 148                 { 21, HDMI_HDMI },
 149         },
 150         {
 151                 { 1440, 576, 54000, 128, 24, 136, 5, 5, 39,
 152                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 153                         false, },
 154                 { 29, HDMI_HDMI },
 155         },
 156         {
 157                 { 1920, 1080, 148500, 44, 528, 148, 5, 4, 36,
 158                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 159                         false, },
 160                 { 31, HDMI_HDMI },
 161         },
 162         {
 163                 { 1920, 1080, 74250, 44, 638, 148, 5, 4, 36,
 164                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 165                         false, },
 166                 { 32, HDMI_HDMI },
 167         },
 168         {
 169                 { 2880, 480, 108108, 248, 64, 240, 6, 9, 30,
 170                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 171                         false, },
 172                 { 35, HDMI_HDMI },
 173         },
 174         {
 175                 { 2880, 576, 108000, 256, 48, 272, 5, 5, 39,
 176                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 177                         false, },
 178                 { 37, HDMI_HDMI },
 179         },
 180 };
 181
 182 static const struct hdmi_config vesa_timings[] = {
 183 /* VESA From Here */
 184         {
 185                 { 640, 480, 25175, 96, 16, 48, 2, 11, 31,
 186                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 187                         false, },
 188                 { 4, HDMI_DVI },
 189         },
 190         {
 191                 { 800, 600, 40000, 128, 40, 88, 4, 1, 23,
 192                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 193                         false, },
 194                 { 9, HDMI_DVI },
 195         },
 196         {
 197                 { 848, 480, 33750, 112, 16, 112, 8, 6, 23,
 198                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 199                         false, },
 200                 { 0xE, HDMI_DVI },
 201         },
 202         {
 203                 { 1280, 768, 79500, 128, 64, 192, 7, 3, 20,
 204                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 205                         false, },
 206                 { 0x17, HDMI_DVI },
 207         },
 208         {
 209                 { 1280, 800, 83500, 128, 72, 200, 6, 3, 22,
 210                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 211                         false, },
 212                 { 0x1C, HDMI_DVI },
 213         },
 214         {
 215                 { 1360, 768, 85500, 112, 64, 256, 6, 3, 18,
 216                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 217                         false, },
 218                 { 0x27, HDMI_DVI },
 219         },
 220         {
 221                 { 1280, 960, 108000, 112, 96, 312, 3, 1, 36,
 222                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 223                         false, },
 224                 { 0x20, HDMI_DVI },
 225         },
 226         {
 227                 { 1280, 1024, 108000, 112, 48, 248, 3, 1, 38,
 228                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 229                         false, },
 230                 { 0x23, HDMI_DVI },
 231         },
 232         {
 233                 { 1024, 768, 65000, 136, 24, 160, 6, 3, 29,
 234                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
 235                         false, },
 236                 { 0x10, HDMI_DVI },
 237         },
 238         {
 239                 { 1400, 1050, 121750, 144, 88, 232, 4, 3, 32,
 240                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 241                         false, },
 242                 { 0x2A, HDMI_DVI },
 243         },
 244         {
 245                 { 1440, 900, 106500, 152, 80, 232, 6, 3, 25,
 246                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 247                         false, },
 248                 { 0x2F, HDMI_DVI },
 249         },
 250         {
 251                 { 1680, 1050, 146250, 176 , 104, 280, 6, 3, 30,
 252                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
 253                         false, },
 254                 { 0x3A, HDMI_DVI },
 255         },
 256         {
 257                 { 1366, 768, 85500, 143, 70, 213, 3, 3, 24,
 258                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 259                         false, },
 260                 { 0x51, HDMI_DVI },
 261         },
 262         {
 263                 { 1920, 1080, 148500, 44, 148, 80, 5, 4, 36,
 264                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 265                         false, },
 266                 { 0x52, HDMI_DVI },
 267         },
 268         {
 269                 { 1280, 768, 68250, 32, 48, 80, 7, 3, 12,
 270                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 271                         false, },
 272                 { 0x16, HDMI_DVI },
 273         },
 274         {
 275                 { 1400, 1050, 101000, 32, 48, 80, 4, 3, 23,
 276                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 277                         false, },
 278                 { 0x29, HDMI_DVI },
 279         },
 280         {
 281                 { 1680, 1050, 119000, 32, 48, 80, 6, 3, 21,
 282                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 283                         false, },
 284                 { 0x39, HDMI_DVI },
 285         },
 286         {
 287                 { 1280, 800, 79500, 32, 48, 80, 6, 3, 14,
 288                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
 289                         false, },
 290                 { 0x1B, HDMI_DVI },
 291         },
 292         {
 293                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
 294                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
 295                         false, },
 296                 { 0x55, HDMI_DVI },
 297         },
 298 };
 299
 300 static int hdmi_runtime_get(void)
 301 {
 302         int r;
 303
 304         DSSDBG("hdmi_runtime_get\n");
 305
 306         r = pm_runtime_get_sync(&hdmi.pdev->dev);
 307         WARN_ON(r < 0);
 308         if (r < 0)
 309                 return r;
 310
 311         return 0;
 312 }
 313
 314 static void hdmi_runtime_put(void)
 315 {
 316         int r;
 317
 318         DSSDBG("hdmi_runtime_put\n");
 319
 320         r = pm_runtime_put_sync(&hdmi.pdev->dev);
 321         WARN_ON(r < 0 && r != -ENOSYS);
 322 }
 323
 324 static int __init hdmi_init_display(struct omap_dss_device *dssdev)
 325 {
 326         int r;
 327
 328         struct gpio gpios[] = {
 329                 { hdmi.ct_cp_hpd_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd" },
 330                 { hdmi.ls_oe_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ls_oe" },
 331                 { hdmi.hpd_gpio, GPIOF_DIR_IN, "hdmi_hpd" },
 332         };
 333
 334         DSSDBG("init_display\n");
 335
 336         dss_init_hdmi_ip_ops(&hdmi.ip_data);
 337
 338         if (hdmi.vdda_hdmi_dac_reg == NULL) {
 339                 struct regulator *reg;
 340
 341                 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda_hdmi_dac");
 342
 343                 if (IS_ERR(reg)) {
 344                         DSSERR("can't get VDDA_HDMI_DAC regulator\n");
 345                         return PTR_ERR(reg);
 346                 }
 347
 348                 hdmi.vdda_hdmi_dac_reg = reg;
 349         }
 350
 351         r = gpio_request_array(gpios, ARRAY_SIZE(gpios));
 352         if (r)
 353                 return r;
 354
 355         return 0;
 356 }
 357
 358 static void __exit hdmi_uninit_display(struct omap_dss_device *dssdev)
 359 {
 360         DSSDBG("uninit_display\n");
 361
 362         gpio_free(hdmi.ct_cp_hpd_gpio);
 363         gpio_free(hdmi.ls_oe_gpio);
 364         gpio_free(hdmi.hpd_gpio);
 365 }
 366
 367 static const struct hdmi_config *hdmi_find_timing(
 368                                         const struct hdmi_config *timings_arr,
 369                                         int len)
 370 {
 371         int i;
 372
 373         for (i = 0; i < len; i++) {
 374                 if (timings_arr[i].cm.code == hdmi.ip_data.cfg.cm.code)
 375                         return &timings_arr[i];
 376         }
 377         return NULL;
 378 }
 379
 380 static const struct hdmi_config *hdmi_get_timings(void)
 381 {
 382        const struct hdmi_config *arr;
 383        int len;
 384
 385        if (hdmi.ip_data.cfg.cm.mode == HDMI_DVI) {
 386                arr = vesa_timings;
 387                len = ARRAY_SIZE(vesa_timings);
 388        } else {
 389                arr = cea_timings;
 390                len = ARRAY_SIZE(cea_timings);
 391        }
 392
 393        return hdmi_find_timing(arr, len);
 394 }
 395
 396 static bool hdmi_timings_compare(struct omap_video_timings *timing1,
 397                                 const struct omap_video_timings *timing2)
 398 {
 399         int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync;
 400
 401         if ((timing2->pixel_clock == timing1->pixel_clock) &&
 402                 (timing2->x_res == timing1->x_res) &&
 403                 (timing2->y_res == timing1->y_res)) {
 404
 405                 timing2_hsync = timing2->hfp + timing2->hsw + timing2->hbp;
 406                 timing1_hsync = timing1->hfp + timing1->hsw + timing1->hbp;
 407                 timing2_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
 408                 timing1_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
 409
 410                 DSSDBG("timing1_hsync = %d timing1_vsync = %d"\
 411                         "timing2_hsync = %d timing2_vsync = %d\n",
 412                         timing1_hsync, timing1_vsync,
 413                         timing2_hsync, timing2_vsync);
 414
 415                 if ((timing1_hsync == timing2_hsync) &&
 416                         (timing1_vsync == timing2_vsync)) {
 417                         return true;
 418                 }
 419         }
 420         return false;
 421 }
 422
 423 static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing)
 424 {
 425         int i;
 426         struct hdmi_cm cm = {-1};
 427         DSSDBG("hdmi_get_code\n");
 428
 429         for (i = 0; i < ARRAY_SIZE(cea_timings); i++) {
 430                 if (hdmi_timings_compare(timing, &cea_timings[i].timings)) {
 431                         cm = cea_timings[i].cm;
 432                         goto end;
 433                 }
 434         }
 435         for (i = 0; i < ARRAY_SIZE(vesa_timings); i++) {
 436                 if (hdmi_timings_compare(timing, &vesa_timings[i].timings)) {
 437                         cm = vesa_timings[i].cm;
 438                         goto end;
 439                 }
 440         }
 441
 442 end:    return cm;
 443
 444 }
 445
 446 unsigned long hdmi_get_pixel_clock(void)
 447 {
 448         /* HDMI Pixel Clock in Mhz */
 449         return hdmi.ip_data.cfg.timings.pixel_clock * 1000;
 450 }
 451
 452 static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
 453                 struct hdmi_pll_info *pi)
 454 {
 455         unsigned long clkin, refclk;
 456         u32 mf;
 457
 458         clkin = clk_get_rate(hdmi.sys_clk) / 10000;
 459         /*
 460          * Input clock is predivided by N + 1
 461          * out put of which is reference clk
 462          */
 463         if (dssdev->clocks.hdmi.regn == 0)
 464                 pi->regn = HDMI_DEFAULT_REGN;
 465         else
 466                 pi->regn = dssdev->clocks.hdmi.regn;
 467
 468         refclk = clkin / pi->regn;
 469
 470         if (dssdev->clocks.hdmi.regm2 == 0)
 471                 pi->regm2 = HDMI_DEFAULT_REGM2;
 472         else
 473                 pi->regm2 = dssdev->clocks.hdmi.regm2;
 474
 475         /*
 476          * multiplier is pixel_clk/ref_clk
 477          * Multiplying by 100 to avoid fractional part removal
 478          */
 479         pi->regm = phy * pi->regm2 / refclk;
 480
 481         /*
 482          * fractional multiplier is remainder of the difference between
 483          * multiplier and actual phy(required pixel clock thus should be
 484          * multiplied by 2^18(262144) divided by the reference clock
 485          */
 486         mf = (phy - pi->regm / pi->regm2 * refclk) * 262144;
 487         pi->regmf = pi->regm2 * mf / refclk;
 488
 489         /*
 490          * Dcofreq should be set to 1 if required pixel clock
 491          * is greater than 1000MHz
 492          */
 493         pi->dcofreq = phy > 1000 * 100;
 494         pi->regsd = ((pi->regm * clkin / 10) / (pi->regn * 250) + 5) / 10;
 495
 496         /* Set the reference clock to sysclk reference */
 497         pi->refsel = HDMI_REFSEL_SYSCLK;
 498
 499         DSSDBG("M = %d Mf = %d\n", pi->regm, pi->regmf);
 500         DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd);
 501 }
 502
 503 static int hdmi_power_on(struct omap_dss_device *dssdev)
 504 {
 505         int r;
 506         struct omap_video_timings *p;
 507         struct omap_overlay_manager *mgr = dssdev->output->manager;
 508         unsigned long phy;
 509
 510         gpio_set_value(hdmi.ct_cp_hpd_gpio, 1);
 511         gpio_set_value(hdmi.ls_oe_gpio, 1);
 512
 513         /* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */
 514         udelay(300);
 515
 516         r = regulator_enable(hdmi.vdda_hdmi_dac_reg);
 517         if (r)
 518                 goto err_vdac_enable;
 519
 520         r = hdmi_runtime_get();
 521         if (r)
 522                 goto err_runtime_get;
 523
 524         dss_mgr_disable(mgr);
 525
 526         p = &hdmi.ip_data.cfg.timings;
 527
 528         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
 529
 530         phy = p->pixel_clock;
 531
 532         hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data);
 533
 534         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 535
 536         /* config the PLL and PHY hdmi_set_pll_pwrfirst */
 537         r = hdmi.ip_data.ops->pll_enable(&hdmi.ip_data);
 538         if (r) {
 539                 DSSDBG("Failed to lock PLL\n");
 540                 goto err_pll_enable;
 541         }
 542
 543         r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data);
 544         if (r) {
 545                 DSSDBG("Failed to start PHY\n");
 546                 goto err_phy_enable;
 547         }
 548
 549         hdmi.ip_data.ops->video_configure(&hdmi.ip_data);
 550
 551         /* Make selection of HDMI in DSS */
 552         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
 553
 554         /* Select the dispc clock source as PRCM clock, to ensure that it is not
 555          * DSI PLL source as the clock selected by DSI PLL might not be
 556          * sufficient for the resolution selected / that can be changed
 557          * dynamically by user. This can be moved to single location , say
 558          * Boardfile.
 559          */
 560         dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
 561
 562         /* bypass TV gamma table */
 563         dispc_enable_gamma_table(0);
 564
 565         /* tv size */
 566         dss_mgr_set_timings(mgr, p);
 567
 568         r = hdmi.ip_data.ops->video_enable(&hdmi.ip_data);
 569         if (r)
 570                 goto err_vid_enable;
 571
 572         r = dss_mgr_enable(mgr);
 573         if (r)
 574                 goto err_mgr_enable;
 575
 576         return 0;
 577
 578 err_mgr_enable:
 579         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 580 err_vid_enable:
 581         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
 582 err_phy_enable:
 583         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
 584 err_pll_enable:
 585         hdmi_runtime_put();
 586 err_runtime_get:
 587         regulator_disable(hdmi.vdda_hdmi_dac_reg);
 588 err_vdac_enable:
 589         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
 590         gpio_set_value(hdmi.ls_oe_gpio, 0);
 591         return -EIO;
 592 }
 593
 594 static void hdmi_power_off(struct omap_dss_device *dssdev)
 595 {
 596         struct omap_overlay_manager *mgr = dssdev->output->manager;
 597
 598         dss_mgr_disable(mgr);
 599
 600         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
 601         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
 602         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
 603         hdmi_runtime_put();
 604
 605         regulator_disable(hdmi.vdda_hdmi_dac_reg);
 606
 607         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
 608         gpio_set_value(hdmi.ls_oe_gpio, 0);
 609 }
 610
 611 int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
 612                                         struct omap_video_timings *timings)
 613 {
 614         struct hdmi_cm cm;
 615
 616         cm = hdmi_get_code(timings);
 617         if (cm.code == -1) {
 618                 return -EINVAL;
 619         }
 620
 621         return 0;
 622
 623 }
 624
 625 void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev,
 626                 struct omap_video_timings *timings)
 627 {
 628         struct hdmi_cm cm;
 629         const struct hdmi_config *t;
 630
 631         mutex_lock(&hdmi.lock);
 632
 633         cm = hdmi_get_code(timings);
 634         hdmi.ip_data.cfg.cm = cm;
 635
 636         t = hdmi_get_timings();
 637         if (t != NULL)
 638                 hdmi.ip_data.cfg = *t;
 639
 640         mutex_unlock(&hdmi.lock);
 641 }
 642
 643 static void hdmi_dump_regs(struct seq_file *s)
 644 {
 645         mutex_lock(&hdmi.lock);
 646
 647         if (hdmi_runtime_get()) {
 648                 mutex_unlock(&hdmi.lock);
 649                 return;
 650         }
 651
 652         hdmi.ip_data.ops->dump_wrapper(&hdmi.ip_data, s);
 653         hdmi.ip_data.ops->dump_pll(&hdmi.ip_data, s);
 654         hdmi.ip_data.ops->dump_phy(&hdmi.ip_data, s);
 655         hdmi.ip_data.ops->dump_core(&hdmi.ip_data, s);
 656
 657         hdmi_runtime_put();
 658         mutex_unlock(&hdmi.lock);
 659 }
 660
 661 int omapdss_hdmi_read_edid(u8 *buf, int len)
 662 {
 663         int r;
 664
 665         mutex_lock(&hdmi.lock);
 666
 667         r = hdmi_runtime_get();
 668         BUG_ON(r);
 669
 670         r = hdmi.ip_data.ops->read_edid(&hdmi.ip_data, buf, len);
 671
 672         hdmi_runtime_put();
 673         mutex_unlock(&hdmi.lock);
 674
 675         return r;
 676 }
 677
 678 bool omapdss_hdmi_detect(void)
 679 {
 680         int r;
 681
 682         mutex_lock(&hdmi.lock);
 683
 684         r = hdmi_runtime_get();
 685         BUG_ON(r);
 686
 687         r = hdmi.ip_data.ops->detect(&hdmi.ip_data);
 688
 689         hdmi_runtime_put();
 690         mutex_unlock(&hdmi.lock);
 691
 692         return r == 1;
 693 }
 694
 695 int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 696 {
 697         struct omap_dss_output *out = dssdev->output;
 698         int r = 0;
 699
 700         DSSDBG("ENTER hdmi_display_enable\n");
 701
 702         mutex_lock(&hdmi.lock);
 703
 704         if (out == NULL || out->manager == NULL) {
 705                 DSSERR("failed to enable display: no output/manager\n");
 706                 r = -ENODEV;
 707                 goto err0;
 708         }
 709
 710         hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
 711
 712         r = omap_dss_start_device(dssdev);
 713         if (r) {
 714                 DSSERR("failed to start device\n");
 715                 goto err0;
 716         }
 717
 718         r = hdmi_power_on(dssdev);
 719         if (r) {
 720                 DSSERR("failed to power on device\n");
 721                 goto err1;
 722         }
 723
 724         mutex_unlock(&hdmi.lock);
 725         return 0;
 726
 727 err1:
 728         omap_dss_stop_device(dssdev);
 729 err0:
 730         mutex_unlock(&hdmi.lock);
 731         return r;
 732 }
 733
 734 void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev)
 735 {
 736         DSSDBG("Enter hdmi_display_disable\n");
 737
 738         mutex_lock(&hdmi.lock);
 739
 740         hdmi_power_off(dssdev);
 741
 742         omap_dss_stop_device(dssdev);
 743
 744         mutex_unlock(&hdmi.lock);
 745 }
 746
 747 static int hdmi_get_clocks(struct platform_device *pdev)
 748 {
 749         struct clk *clk;
 750
 751         clk = clk_get(&pdev->dev, "sys_clk");
 752         if (IS_ERR(clk)) {
 753                 DSSERR("can't get sys_clk\n");
 754                 return PTR_ERR(clk);
 755         }
 756
 757         hdmi.sys_clk = clk;
 758
 759         return 0;
 760 }
 761
 762 static void hdmi_put_clocks(void)
 763 {
 764         if (hdmi.sys_clk)
 765                 clk_put(hdmi.sys_clk);
 766 }
 767
 768 #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
 769 int hdmi_compute_acr(u32 sample_freq, u32 *n, u32 *cts)
 770 {
 771         u32 deep_color;
 772         bool deep_color_correct = false;
 773         u32 pclk = hdmi.ip_data.cfg.timings.pixel_clock;
 774
 775         if (n == NULL || cts == NULL)
 776                 return -EINVAL;
 777
 778         /* TODO: When implemented, query deep color mode here. */
 779         deep_color = 100;
 780
 781         /*
 782          * When using deep color, the default N value (as in the HDMI
 783          * specification) yields to an non-integer CTS. Hence, we
 784          * modify it while keeping the restrictions described in
 785          * section 7.2.1 of the HDMI 1.4a specification.
 786          */
 787         switch (sample_freq) {
 788         case 32000:
 789         case 48000:
 790         case 96000:
 791         case 192000:
 792                 if (deep_color == 125)
 793                         if (pclk == 27027 || pclk == 74250)
 794                                 deep_color_correct = true;
 795                 if (deep_color == 150)
 796                         if (pclk == 27027)
 797                                 deep_color_correct = true;
 798                 break;
 799         case 44100:
 800         case 88200:
 801         case 176400:
 802                 if (deep_color == 125)
 803                         if (pclk == 27027)
 804                                 deep_color_correct = true;
 805                 break;
 806         default:
 807                 return -EINVAL;
 808         }
 809
 810         if (deep_color_correct) {
 811                 switch (sample_freq) {
 812                 case 32000:
 813                         *n = 8192;
 814                         break;
 815                 case 44100:
 816                         *n = 12544;
 817                         break;
 818                 case 48000:
 819                         *n = 8192;
 820                         break;
 821                 case 88200:
 822                         *n = 25088;
 823                         break;
 824                 case 96000:
 825                         *n = 16384;
 826                         break;
 827                 case 176400:
 828                         *n = 50176;
 829                         break;
 830                 case 192000:
 831                         *n = 32768;
 832                         break;
 833                 default:
 834                         return -EINVAL;
 835                 }
 836         } else {
 837                 switch (sample_freq) {
 838                 case 32000:
 839                         *n = 4096;
 840                         break;
 841                 case 44100:
 842                         *n = 6272;
 843                         break;
 844                 case 48000:
 845                         *n = 6144;
 846                         break;
 847                 case 88200:
 848                         *n = 12544;
 849                         break;
 850                 case 96000:
 851                         *n = 12288;
 852                         break;
 853                 case 176400:
 854                         *n = 25088;
 855                         break;
 856                 case 192000:
 857                         *n = 24576;
 858                         break;
 859                 default:
 860                         return -EINVAL;
 861                 }
 862         }
 863         /* Calculate CTS. See HDMI 1.3a or 1.4a specifications */
 864         *cts = pclk * (*n / 128) * deep_color / (sample_freq / 10);
 865
 866         return 0;
 867 }
 868
 869 int hdmi_audio_enable(void)
 870 {
 871         DSSDBG("audio_enable\n");
 872
 873         return hdmi.ip_data.ops->audio_enable(&hdmi.ip_data);
 874 }
 875
 876 void hdmi_audio_disable(void)
 877 {
 878         DSSDBG("audio_disable\n");
 879
 880         hdmi.ip_data.ops->audio_disable(&hdmi.ip_data);
 881 }
 882
 883 int hdmi_audio_start(void)
 884 {
 885         DSSDBG("audio_start\n");
 886
 887         return hdmi.ip_data.ops->audio_start(&hdmi.ip_data);
 888 }
 889
 890 void hdmi_audio_stop(void)
 891 {
 892         DSSDBG("audio_stop\n");
 893
 894         hdmi.ip_data.ops->audio_stop(&hdmi.ip_data);
 895 }
 896
 897 bool hdmi_mode_has_audio(void)
 898 {
 899         if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI)
 900                 return true;
 901         else
 902                 return false;
 903 }
 904
 905 int hdmi_audio_config(struct omap_dss_audio *audio)
 906 {
 907         return hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio);
 908 }
 909
 910 #endif
 911
 912 static struct omap_dss_device * __init hdmi_find_dssdev(struct platform_device *pdev)
 913 {
 914         struct omap_dss_board_info *pdata = pdev->dev.platform_data;
 915         const char *def_disp_name = dss_get_default_display_name();
 916         struct omap_dss_device *def_dssdev;
 917         int i;
 918
 919         def_dssdev = NULL;
 920
 921         for (i = 0; i < pdata->num_devices; ++i) {
 922                 struct omap_dss_device *dssdev = pdata->devices[i];
 923
 924                 if (dssdev->type != OMAP_DISPLAY_TYPE_HDMI)
 925                         continue;
 926
 927                 if (def_dssdev == NULL)
 928                         def_dssdev = dssdev;
 929
 930                 if (def_disp_name != NULL &&
 931                                 strcmp(dssdev->name, def_disp_name) == 0) {
 932                         def_dssdev = dssdev;
 933                         break;
 934                 }
 935         }
 936
 937         return def_dssdev;
 938 }
 939
 940 static void __init hdmi_probe_pdata(struct platform_device *pdev)
 941 {
 942         struct omap_dss_device *plat_dssdev;
 943         struct omap_dss_device *dssdev;
 944         struct omap_dss_hdmi_data *priv;
 945         int r;
 946
 947         plat_dssdev = hdmi_find_dssdev(pdev);
 948
 949         if (!plat_dssdev)
 950                 return;
 951
 952         dssdev = dss_alloc_and_init_device(&pdev->dev);
 953         if (!dssdev)
 954                 return;
 955
 956         dss_copy_device_pdata(dssdev, plat_dssdev);
 957
 958         priv = dssdev->data;
 959
 960         hdmi.ct_cp_hpd_gpio = priv->ct_cp_hpd_gpio;
 961         hdmi.ls_oe_gpio = priv->ls_oe_gpio;
 962         hdmi.hpd_gpio = priv->hpd_gpio;
 963
 964         dssdev->channel = OMAP_DSS_CHANNEL_DIGIT;
 965
 966         r = hdmi_init_display(dssdev);
 967         if (r) {
 968                 DSSERR("device %s init failed: %d\n", dssdev->name, r);
 969                 dss_put_device(dssdev);
 970                 return;
 971         }
 972
 973         r = dss_add_device(dssdev);
 974         if (r) {
 975                 DSSERR("device %s register failed: %d\n", dssdev->name, r);
 976                 dss_put_device(dssdev);
 977                 return;
 978         }
 979 }
 980
 981 static void __init hdmi_init_output(struct platform_device *pdev)
 982 {
 983         struct omap_dss_output *out = &hdmi.output;
 984
 985         out->pdev = pdev;
 986         out->id = OMAP_DSS_OUTPUT_HDMI;
 987         out->type = OMAP_DISPLAY_TYPE_HDMI;
 988
 989         dss_register_output(out);
 990 }
 991
 992 static void __exit hdmi_uninit_output(struct platform_device *pdev)
 993 {
 994         struct omap_dss_output *out = &hdmi.output;
 995
 996         dss_unregister_output(out);
 997 }
 998
 999 /* HDMI HW IP initialisation */
1000 static int __init omapdss_hdmihw_probe(struct platform_device *pdev)
1001 {
1002         struct resource *hdmi_mem;
1003         int r;
1004
1005         hdmi.pdev = pdev;
1006
1007         mutex_init(&hdmi.lock);
1008
1009         hdmi_mem = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0);
1010         if (!hdmi_mem) {
1011                 DSSERR("can't get IORESOURCE_MEM HDMI\n");
1012                 return -EINVAL;
1013         }
1014
1015         /* Base address taken from platform */
1016         hdmi.ip_data.base_wp = ioremap(hdmi_mem->start,
1017                                                 resource_size(hdmi_mem));
1018         if (!hdmi.ip_data.base_wp) {
1019                 DSSERR("can't ioremap WP\n");
1020                 return -ENOMEM;
1021         }
1022
1023         r = hdmi_get_clocks(pdev);
1024         if (r) {
1025                 iounmap(hdmi.ip_data.base_wp);
1026                 return r;
1027         }
1028
1029         pm_runtime_enable(&pdev->dev);
1030
1031         hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS;
1032         hdmi.ip_data.core_av_offset = HDMI_CORE_AV;
1033         hdmi.ip_data.pll_offset = HDMI_PLLCTRL;
1034         hdmi.ip_data.phy_offset = HDMI_PHY;
1035
1036         mutex_init(&hdmi.ip_data.lock);
1037
1038         hdmi_panel_init();
1039
1040         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
1041
1042         hdmi_init_output(pdev);
1043
1044         hdmi_probe_pdata(pdev);
1045
1046         return 0;
1047 }
1048
1049 static int __exit hdmi_remove_child(struct device *dev, void *data)
1050 {
1051         struct omap_dss_device *dssdev = to_dss_device(dev);
1052         hdmi_uninit_display(dssdev);
1053         return 0;
1054 }
1055
1056 static int __exit omapdss_hdmihw_remove(struct platform_device *pdev)
1057 {
1058         device_for_each_child(&pdev->dev, NULL, hdmi_remove_child);
1059
1060         dss_unregister_child_devices(&pdev->dev);
1061
1062         hdmi_panel_exit();
1063
1064         hdmi_uninit_output(pdev);
1065
1066         pm_runtime_disable(&pdev->dev);
1067
1068         hdmi_put_clocks();
1069
1070         iounmap(hdmi.ip_data.base_wp);
1071
1072         return 0;
1073 }
1074
1075 static int hdmi_runtime_suspend(struct device *dev)
1076 {
1077         clk_disable_unprepare(hdmi.sys_clk);
1078
1079         dispc_runtime_put();
1080
1081         return 0;
1082 }
1083
1084 static int hdmi_runtime_resume(struct device *dev)
1085 {
1086         int r;
1087
1088         r = dispc_runtime_get();
1089         if (r < 0)
1090                 return r;
1091
1092         clk_prepare_enable(hdmi.sys_clk);
1093
1094         return 0;
1095 }
1096
1097 static const struct dev_pm_ops hdmi_pm_ops = {
1098         .runtime_suspend = hdmi_runtime_suspend,
1099         .runtime_resume = hdmi_runtime_resume,
1100 };
1101
1102 static struct platform_driver omapdss_hdmihw_driver = {
1103         .remove         = __exit_p(omapdss_hdmihw_remove),
1104         .driver         = {
1105                 .name   = "omapdss_hdmi",
1106                 .owner  = THIS_MODULE,
1107                 .pm     = &hdmi_pm_ops,
1108         },
1109 };
1110
1111 int __init hdmi_init_platform_driver(void)
1112 {
1113         return platform_driver_probe(&omapdss_hdmihw_driver, omapdss_hdmihw_probe);
1114 }
1115
1116 void __exit hdmi_uninit_platform_driver(void)
1117 {
1118         platform_driver_unregister(&omapdss_hdmihw_driver);
1119 }