drivers/gpu/drm/bridge/parade-ps8622.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
bridge_to_ps8622
connector_to_ps8622
ps8622_set
ps8622_send_config
ps8622_backlight_update
ps8622_pre_enable
ps8622_enable
ps8622_disable
ps8622_post_disable
ps8622_get_modes
ps8622_attach
ps8622_probe
ps8622_remove
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Parade PS8622 eDP/LVDS bridge driver
   4  *
   5  * Copyright (C) 2014 Google, Inc.
   6  */
   7 
   8 #include <linux/backlight.h>
   9 #include <linux/delay.h>
  10 #include <linux/err.h>
  11 #include <linux/gpio/consumer.h>
  12 #include <linux/i2c.h>
  13 #include <linux/module.h>
  14 #include <linux/of.h>
  15 #include <linux/of_device.h>
  16 #include <linux/pm.h>
  17 #include <linux/regulator/consumer.h>
  18 
  19 #include <drm/drm_atomic_helper.h>
  20 #include <drm/drm_crtc.h>
  21 #include <drm/drm_of.h>
  22 #include <drm/drm_panel.h>
  23 #include <drm/drm_print.h>
  24 #include <drm/drm_probe_helper.h>
  25 
  26 /* Brightness scale on the Parade chip */
  27 #define PS8622_MAX_BRIGHTNESS 0xff
  28 
  29 /* Timings taken from the version 1.7 datasheet for the PS8622/PS8625 */
  30 #define PS8622_POWER_RISE_T1_MIN_US 10
  31 #define PS8622_POWER_RISE_T1_MAX_US 10000
  32 #define PS8622_RST_HIGH_T2_MIN_US 3000
  33 #define PS8622_RST_HIGH_T2_MAX_US 30000
  34 #define PS8622_PWMO_END_T12_MS 200
  35 #define PS8622_POWER_FALL_T16_MAX_US 10000
  36 #define PS8622_POWER_OFF_T17_MS 500
  37 
  38 #if ((PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US) > \
  39         (PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US))
  40 #error "T2.min + T1.max must be less than T2.max + T1.min"
  41 #endif
  42 
  43 struct ps8622_bridge {
  44         struct drm_connector connector;
  45         struct i2c_client *client;
  46         struct drm_bridge bridge;
  47         struct drm_panel *panel;
  48         struct regulator *v12;
  49         struct backlight_device *bl;
  50 
  51         struct gpio_desc *gpio_slp;
  52         struct gpio_desc *gpio_rst;
  53 
  54         u32 max_lane_count;
  55         u32 lane_count;
  56 
  57         bool enabled;
  58 };
  59 
  60 static inline struct ps8622_bridge *
  61                 bridge_to_ps8622(struct drm_bridge *bridge)
  62 {
  63         return container_of(bridge, struct ps8622_bridge, bridge);
  64 }
  65 
  66 static inline struct ps8622_bridge *
  67                 connector_to_ps8622(struct drm_connector *connector)
  68 {
  69         return container_of(connector, struct ps8622_bridge, connector);
  70 }
  71 
  72 static int ps8622_set(struct i2c_client *client, u8 page, u8 reg, u8 val)
  73 {
  74         int ret;
  75         struct i2c_adapter *adap = client->adapter;
  76         struct i2c_msg msg;
  77         u8 data[] = {reg, val};
  78 
  79         msg.addr = client->addr + page;
  80         msg.flags = 0;
  81         msg.len = sizeof(data);
  82         msg.buf = data;
  83 
  84         ret = i2c_transfer(adap, &msg, 1);
  85         if (ret != 1)
  86                 pr_warn("PS8622 I2C write (0x%02x,0x%02x,0x%02x) failed: %d\n",
  87                         client->addr + page, reg, val, ret);
  88         return !(ret == 1);
  89 }
  90 
  91 static int ps8622_send_config(struct ps8622_bridge *ps8622)
  92 {
  93         struct i2c_client *cl = ps8622->client;
  94         int err = 0;
  95 
  96         /* HPD low */
  97         err = ps8622_set(cl, 0x02, 0xa1, 0x01);
  98         if (err)
  99                 goto error;
 100 
 101         /* SW setting: [1:0] SW output 1.2V voltage is lower to 96% */
 102         err = ps8622_set(cl, 0x04, 0x14, 0x01);
 103         if (err)
 104                 goto error;
 105 
 106         /* RCO SS setting: [5:4] = b01 0.5%, b10 1%, b11 1.5% */
 107         err = ps8622_set(cl, 0x04, 0xe3, 0x20);
 108         if (err)
 109                 goto error;
 110 
 111         /* [7] RCO SS enable */
 112         err = ps8622_set(cl, 0x04, 0xe2, 0x80);
 113         if (err)
 114                 goto error;
 115 
 116         /* RPHY Setting
 117          * [3:2] CDR tune wait cycle before measure for fine tune
 118          * b00: 1us b01: 0.5us b10:2us, b11: 4us
 119          */
 120         err = ps8622_set(cl, 0x04, 0x8a, 0x0c);
 121         if (err)
 122                 goto error;
 123 
 124         /* [3] RFD always on */
 125         err = ps8622_set(cl, 0x04, 0x89, 0x08);
 126         if (err)
 127                 goto error;
 128 
 129         /* CTN lock in/out: 20000ppm/80000ppm. Lock out 2 times. */
 130         err = ps8622_set(cl, 0x04, 0x71, 0x2d);
 131         if (err)
 132                 goto error;
 133 
 134         /* 2.7G CDR settings: NOF=40LSB for HBR CDR  setting */
 135         err = ps8622_set(cl, 0x04, 0x7d, 0x07);
 136         if (err)
 137                 goto error;
 138 
 139         /* [1:0] Fmin=+4bands */
 140         err = ps8622_set(cl, 0x04, 0x7b, 0x00);
 141         if (err)
 142                 goto error;
 143 
 144         /* [7:5] DCO_FTRNG=+-40% */
 145         err = ps8622_set(cl, 0x04, 0x7a, 0xfd);
 146         if (err)
 147                 goto error;
 148 
 149         /* 1.62G CDR settings: [5:2]NOF=64LSB [1:0]DCO scale is 2/5 */
 150         err = ps8622_set(cl, 0x04, 0xc0, 0x12);
 151         if (err)
 152                 goto error;
 153 
 154         /* Gitune=-37% */
 155         err = ps8622_set(cl, 0x04, 0xc1, 0x92);
 156         if (err)
 157                 goto error;
 158 
 159         /* Fbstep=100% */
 160         err = ps8622_set(cl, 0x04, 0xc2, 0x1c);
 161         if (err)
 162                 goto error;
 163 
 164         /* [7] LOS signal disable */
 165         err = ps8622_set(cl, 0x04, 0x32, 0x80);
 166         if (err)
 167                 goto error;
 168 
 169         /* RPIO Setting: [7:4] LVDS driver bias current : 75% (250mV swing) */
 170         err = ps8622_set(cl, 0x04, 0x00, 0xb0);
 171         if (err)
 172                 goto error;
 173 
 174         /* [7:6] Right-bar GPIO output strength is 8mA */
 175         err = ps8622_set(cl, 0x04, 0x15, 0x40);
 176         if (err)
 177                 goto error;
 178 
 179         /* EQ Training State Machine Setting, RCO calibration start */
 180         err = ps8622_set(cl, 0x04, 0x54, 0x10);
 181         if (err)
 182                 goto error;
 183 
 184         /* Logic, needs more than 10 I2C command */
 185         /* [4:0] MAX_LANE_COUNT set to max supported lanes */
 186         err = ps8622_set(cl, 0x01, 0x02, 0x80 | ps8622->max_lane_count);
 187         if (err)
 188                 goto error;
 189 
 190         /* [4:0] LANE_COUNT_SET set to chosen lane count */
 191         err = ps8622_set(cl, 0x01, 0x21, 0x80 | ps8622->lane_count);
 192         if (err)
 193                 goto error;
 194 
 195         err = ps8622_set(cl, 0x00, 0x52, 0x20);
 196         if (err)
 197                 goto error;
 198 
 199         /* HPD CP toggle enable */
 200         err = ps8622_set(cl, 0x00, 0xf1, 0x03);
 201         if (err)
 202                 goto error;
 203 
 204         err = ps8622_set(cl, 0x00, 0x62, 0x41);
 205         if (err)
 206                 goto error;
 207 
 208         /* Counter number, add 1ms counter delay */
 209         err = ps8622_set(cl, 0x00, 0xf6, 0x01);
 210         if (err)
 211                 goto error;
 212 
 213         /* [6]PWM function control by DPCD0040f[7], default is PWM block */
 214         err = ps8622_set(cl, 0x00, 0x77, 0x06);
 215         if (err)
 216                 goto error;
 217 
 218         /* 04h Adjust VTotal toleranceto fix the 30Hz no display issue */
 219         err = ps8622_set(cl, 0x00, 0x4c, 0x04);
 220         if (err)
 221                 goto error;
 222 
 223         /* DPCD00400='h00, Parade OUI ='h001cf8 */
 224         err = ps8622_set(cl, 0x01, 0xc0, 0x00);
 225         if (err)
 226                 goto error;
 227 
 228         /* DPCD00401='h1c */
 229         err = ps8622_set(cl, 0x01, 0xc1, 0x1c);
 230         if (err)
 231                 goto error;
 232 
 233         /* DPCD00402='hf8 */
 234         err = ps8622_set(cl, 0x01, 0xc2, 0xf8);
 235         if (err)
 236                 goto error;
 237 
 238         /* DPCD403~408 = ASCII code, D2SLV5='h4432534c5635 */
 239         err = ps8622_set(cl, 0x01, 0xc3, 0x44);
 240         if (err)
 241                 goto error;
 242 
 243         /* DPCD404 */
 244         err = ps8622_set(cl, 0x01, 0xc4, 0x32);
 245         if (err)
 246                 goto error;
 247 
 248         /* DPCD405 */
 249         err = ps8622_set(cl, 0x01, 0xc5, 0x53);
 250         if (err)
 251                 goto error;
 252 
 253         /* DPCD406 */
 254         err = ps8622_set(cl, 0x01, 0xc6, 0x4c);
 255         if (err)
 256                 goto error;
 257 
 258         /* DPCD407 */
 259         err = ps8622_set(cl, 0x01, 0xc7, 0x56);
 260         if (err)
 261                 goto error;
 262 
 263         /* DPCD408 */
 264         err = ps8622_set(cl, 0x01, 0xc8, 0x35);
 265         if (err)
 266                 goto error;
 267 
 268         /* DPCD40A, Initial Code major revision '01' */
 269         err = ps8622_set(cl, 0x01, 0xca, 0x01);
 270         if (err)
 271                 goto error;
 272 
 273         /* DPCD40B, Initial Code minor revision '05' */
 274         err = ps8622_set(cl, 0x01, 0xcb, 0x05);
 275         if (err)
 276                 goto error;
 277 
 278 
 279         if (ps8622->bl) {
 280                 /* DPCD720, internal PWM */
 281                 err = ps8622_set(cl, 0x01, 0xa5, 0xa0);
 282                 if (err)
 283                         goto error;
 284 
 285                 /* FFh for 100% brightness, 0h for 0% brightness */
 286                 err = ps8622_set(cl, 0x01, 0xa7,
 287                                 ps8622->bl->props.brightness);
 288                 if (err)
 289                         goto error;
 290         } else {
 291                 /* DPCD720, external PWM */
 292                 err = ps8622_set(cl, 0x01, 0xa5, 0x80);
 293                 if (err)
 294                         goto error;
 295         }
 296 
 297         /* Set LVDS output as 6bit-VESA mapping, single LVDS channel */
 298         err = ps8622_set(cl, 0x01, 0xcc, 0x13);
 299         if (err)
 300                 goto error;
 301 
 302         /* Enable SSC set by register */
 303         err = ps8622_set(cl, 0x02, 0xb1, 0x20);
 304         if (err)
 305                 goto error;
 306 
 307         /* Set SSC enabled and +/-1% central spreading */
 308         err = ps8622_set(cl, 0x04, 0x10, 0x16);
 309         if (err)
 310                 goto error;
 311 
 312         /* Logic end */
 313         /* MPU Clock source: LC => RCO */
 314         err = ps8622_set(cl, 0x04, 0x59, 0x60);
 315         if (err)
 316                 goto error;
 317 
 318         /* LC -> RCO */
 319         err = ps8622_set(cl, 0x04, 0x54, 0x14);
 320         if (err)
 321                 goto error;
 322 
 323         /* HPD high */
 324         err = ps8622_set(cl, 0x02, 0xa1, 0x91);
 325 
 326 error:
 327         return err ? -EIO : 0;
 328 }
 329 
 330 static int ps8622_backlight_update(struct backlight_device *bl)
 331 {
 332         struct ps8622_bridge *ps8622 = dev_get_drvdata(&bl->dev);
 333         int ret, brightness = bl->props.brightness;
 334 
 335         if (bl->props.power != FB_BLANK_UNBLANK ||
 336             bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
 337                 brightness = 0;
 338 
 339         if (!ps8622->enabled)
 340                 return -EINVAL;
 341 
 342         ret = ps8622_set(ps8622->client, 0x01, 0xa7, brightness);
 343 
 344         return ret;
 345 }
 346 
 347 static const struct backlight_ops ps8622_backlight_ops = {
 348         .update_status  = ps8622_backlight_update,
 349 };
 350 
 351 static void ps8622_pre_enable(struct drm_bridge *bridge)
 352 {
 353         struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
 354         int ret;
 355 
 356         if (ps8622->enabled)
 357                 return;
 358 
 359         gpiod_set_value(ps8622->gpio_rst, 0);
 360 
 361         if (ps8622->v12) {
 362                 ret = regulator_enable(ps8622->v12);
 363                 if (ret)
 364                         DRM_ERROR("fails to enable ps8622->v12");
 365         }
 366 
 367         if (drm_panel_prepare(ps8622->panel)) {
 368                 DRM_ERROR("failed to prepare panel\n");
 369                 return;
 370         }
 371 
 372         gpiod_set_value(ps8622->gpio_slp, 1);
 373 
 374         /*
 375          * T1 is the range of time that it takes for the power to rise after we
 376          * enable the lcd/ps8622 fet. T2 is the range of time in which the
 377          * data sheet specifies we should deassert the reset pin.
 378          *
 379          * If it takes T1.max for the power to rise, we need to wait atleast
 380          * T2.min before deasserting the reset pin. If it takes T1.min for the
 381          * power to rise, we need to wait at most T2.max before deasserting the
 382          * reset pin.
 383          */
 384         usleep_range(PS8622_RST_HIGH_T2_MIN_US + PS8622_POWER_RISE_T1_MAX_US,
 385                      PS8622_RST_HIGH_T2_MAX_US + PS8622_POWER_RISE_T1_MIN_US);
 386 
 387         gpiod_set_value(ps8622->gpio_rst, 1);
 388 
 389         /* wait 20ms after RST high */
 390         usleep_range(20000, 30000);
 391 
 392         ret = ps8622_send_config(ps8622);
 393         if (ret) {
 394                 DRM_ERROR("Failed to send config to bridge (%d)\n", ret);
 395                 return;
 396         }
 397 
 398         ps8622->enabled = true;
 399 }
 400 
 401 static void ps8622_enable(struct drm_bridge *bridge)
 402 {
 403         struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
 404 
 405         if (drm_panel_enable(ps8622->panel)) {
 406                 DRM_ERROR("failed to enable panel\n");
 407                 return;
 408         }
 409 }
 410 
 411 static void ps8622_disable(struct drm_bridge *bridge)
 412 {
 413         struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
 414 
 415         if (drm_panel_disable(ps8622->panel)) {
 416                 DRM_ERROR("failed to disable panel\n");
 417                 return;
 418         }
 419         msleep(PS8622_PWMO_END_T12_MS);
 420 }
 421 
 422 static void ps8622_post_disable(struct drm_bridge *bridge)
 423 {
 424         struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
 425 
 426         if (!ps8622->enabled)
 427                 return;
 428 
 429         ps8622->enabled = false;
 430 
 431         /*
 432          * This doesn't matter if the regulators are turned off, but something
 433          * else might keep them on. In that case, we want to assert the slp gpio
 434          * to lower power.
 435          */
 436         gpiod_set_value(ps8622->gpio_slp, 0);
 437 
 438         if (drm_panel_unprepare(ps8622->panel)) {
 439                 DRM_ERROR("failed to unprepare panel\n");
 440                 return;
 441         }
 442 
 443         if (ps8622->v12)
 444                 regulator_disable(ps8622->v12);
 445 
 446         /*
 447          * Sleep for at least the amount of time that it takes the power rail to
 448          * fall to prevent asserting the rst gpio from doing anything.
 449          */
 450         usleep_range(PS8622_POWER_FALL_T16_MAX_US,
 451                      2 * PS8622_POWER_FALL_T16_MAX_US);
 452         gpiod_set_value(ps8622->gpio_rst, 0);
 453 
 454         msleep(PS8622_POWER_OFF_T17_MS);
 455 }
 456 
 457 static int ps8622_get_modes(struct drm_connector *connector)
 458 {
 459         struct ps8622_bridge *ps8622;
 460 
 461         ps8622 = connector_to_ps8622(connector);
 462 
 463         return drm_panel_get_modes(ps8622->panel);
 464 }
 465 
 466 static const struct drm_connector_helper_funcs ps8622_connector_helper_funcs = {
 467         .get_modes = ps8622_get_modes,
 468 };
 469 
 470 static const struct drm_connector_funcs ps8622_connector_funcs = {
 471         .fill_modes = drm_helper_probe_single_connector_modes,
 472         .destroy = drm_connector_cleanup,
 473         .reset = drm_atomic_helper_connector_reset,
 474         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 475         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 476 };
 477 
 478 static int ps8622_attach(struct drm_bridge *bridge)
 479 {
 480         struct ps8622_bridge *ps8622 = bridge_to_ps8622(bridge);
 481         int ret;
 482 
 483         if (!bridge->encoder) {
 484                 DRM_ERROR("Parent encoder object not found");
 485                 return -ENODEV;
 486         }
 487 
 488         ps8622->connector.polled = DRM_CONNECTOR_POLL_HPD;
 489         ret = drm_connector_init(bridge->dev, &ps8622->connector,
 490                         &ps8622_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
 491         if (ret) {
 492                 DRM_ERROR("Failed to initialize connector with drm\n");
 493                 return ret;
 494         }
 495         drm_connector_helper_add(&ps8622->connector,
 496                                         &ps8622_connector_helper_funcs);
 497         drm_connector_register(&ps8622->connector);
 498         drm_connector_attach_encoder(&ps8622->connector,
 499                                                         bridge->encoder);
 500 
 501         if (ps8622->panel)
 502                 drm_panel_attach(ps8622->panel, &ps8622->connector);
 503 
 504         drm_helper_hpd_irq_event(ps8622->connector.dev);
 505 
 506         return ret;
 507 }
 508 
 509 static const struct drm_bridge_funcs ps8622_bridge_funcs = {
 510         .pre_enable = ps8622_pre_enable,
 511         .enable = ps8622_enable,
 512         .disable = ps8622_disable,
 513         .post_disable = ps8622_post_disable,
 514         .attach = ps8622_attach,
 515 };
 516 
 517 static const struct of_device_id ps8622_devices[] = {
 518         {.compatible = "parade,ps8622",},
 519         {.compatible = "parade,ps8625",},
 520         {}
 521 };
 522 MODULE_DEVICE_TABLE(of, ps8622_devices);
 523 
 524 static int ps8622_probe(struct i2c_client *client,
 525                                         const struct i2c_device_id *id)
 526 {
 527         struct device *dev = &client->dev;
 528         struct ps8622_bridge *ps8622;
 529         int ret;
 530 
 531         ps8622 = devm_kzalloc(dev, sizeof(*ps8622), GFP_KERNEL);
 532         if (!ps8622)
 533                 return -ENOMEM;
 534 
 535         ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0, &ps8622->panel, NULL);
 536         if (ret)
 537                 return ret;
 538 
 539         ps8622->client = client;
 540 
 541         ps8622->v12 = devm_regulator_get(dev, "vdd12");
 542         if (IS_ERR(ps8622->v12)) {
 543                 dev_info(dev, "no 1.2v regulator found for PS8622\n");
 544                 ps8622->v12 = NULL;
 545         }
 546 
 547         ps8622->gpio_slp = devm_gpiod_get(dev, "sleep", GPIOD_OUT_HIGH);
 548         if (IS_ERR(ps8622->gpio_slp)) {
 549                 ret = PTR_ERR(ps8622->gpio_slp);
 550                 dev_err(dev, "cannot get gpio_slp %d\n", ret);
 551                 return ret;
 552         }
 553 
 554         /*
 555          * Assert the reset pin high to avoid the bridge being
 556          * initialized prematurely
 557          */
 558         ps8622->gpio_rst = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
 559         if (IS_ERR(ps8622->gpio_rst)) {
 560                 ret = PTR_ERR(ps8622->gpio_rst);
 561                 dev_err(dev, "cannot get gpio_rst %d\n", ret);
 562                 return ret;
 563         }
 564 
 565         ps8622->max_lane_count = id->driver_data;
 566 
 567         if (of_property_read_u32(dev->of_node, "lane-count",
 568                                                 &ps8622->lane_count)) {
 569                 ps8622->lane_count = ps8622->max_lane_count;
 570         } else if (ps8622->lane_count > ps8622->max_lane_count) {
 571                 dev_info(dev, "lane-count property is too high,"
 572                                                 "using max_lane_count\n");
 573                 ps8622->lane_count = ps8622->max_lane_count;
 574         }
 575 
 576         if (!of_find_property(dev->of_node, "use-external-pwm", NULL)) {
 577                 ps8622->bl = backlight_device_register("ps8622-backlight",
 578                                 dev, ps8622, &ps8622_backlight_ops,
 579                                 NULL);
 580                 if (IS_ERR(ps8622->bl)) {
 581                         DRM_ERROR("failed to register backlight\n");
 582                         ret = PTR_ERR(ps8622->bl);
 583                         ps8622->bl = NULL;
 584                         return ret;
 585                 }
 586                 ps8622->bl->props.max_brightness = PS8622_MAX_BRIGHTNESS;
 587                 ps8622->bl->props.brightness = PS8622_MAX_BRIGHTNESS;
 588         }
 589 
 590         ps8622->bridge.funcs = &ps8622_bridge_funcs;
 591         ps8622->bridge.of_node = dev->of_node;
 592         drm_bridge_add(&ps8622->bridge);
 593 
 594         i2c_set_clientdata(client, ps8622);
 595 
 596         return 0;
 597 }
 598 
 599 static int ps8622_remove(struct i2c_client *client)
 600 {
 601         struct ps8622_bridge *ps8622 = i2c_get_clientdata(client);
 602 
 603         backlight_device_unregister(ps8622->bl);
 604         drm_bridge_remove(&ps8622->bridge);
 605 
 606         return 0;
 607 }
 608 
 609 static const struct i2c_device_id ps8622_i2c_table[] = {
 610         /* Device type, max_lane_count */
 611         {"ps8622", 1},
 612         {"ps8625", 2},
 613         {},
 614 };
 615 MODULE_DEVICE_TABLE(i2c, ps8622_i2c_table);
 616 
 617 static struct i2c_driver ps8622_driver = {
 618         .id_table       = ps8622_i2c_table,
 619         .probe          = ps8622_probe,
 620         .remove         = ps8622_remove,
 621         .driver         = {
 622                 .name   = "ps8622",
 623                 .of_match_table = ps8622_devices,
 624         },
 625 };
 626 module_i2c_driver(ps8622_driver);
 627 
 628 MODULE_AUTHOR("Vincent Palatin <vpalatin@chromium.org>");
 629 MODULE_DESCRIPTION("Parade ps8622/ps8625 eDP-LVDS converter driver");
 630 MODULE_LICENSE("GPL v2");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/gpu/drm/bridge/parade-ps8622.c

DEFINITIONS
