drivers/media/i2c/tc358743.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * tc358743 - Toshiba HDMI to CSI-2 bridge
   4  *
   5  * Copyright 2015 Cisco Systems, Inc. and/or its affiliates. All rights
   6  * reserved.
   7  */
   8
   9 /*
  10  * References (c = chapter, p = page):
  11  * REF_01 - Toshiba, TC358743XBG (H2C), Functional Specification, Rev 0.60
  12  * REF_02 - Toshiba, TC358743XBG_HDMI-CSI_Tv11p_nm.xls
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/slab.h>
  18 #include <linux/i2c.h>
  19 #include <linux/clk.h>
  20 #include <linux/delay.h>
  21 #include <linux/gpio/consumer.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/timer.h>
  24 #include <linux/of_graph.h>
  25 #include <linux/videodev2.h>
  26 #include <linux/workqueue.h>
  27 #include <linux/v4l2-dv-timings.h>
  28 #include <linux/hdmi.h>
  29 #include <media/cec.h>
  30 #include <media/v4l2-dv-timings.h>
  31 #include <media/v4l2-device.h>
  32 #include <media/v4l2-ctrls.h>
  33 #include <media/v4l2-event.h>
  34 #include <media/v4l2-fwnode.h>
  35 #include <media/i2c/tc358743.h>
  36
  37 #include "tc358743_regs.h"
  38
  39 static int debug;
  40 module_param(debug, int, 0644);
  41 MODULE_PARM_DESC(debug, "debug level (0-3)");
  42
  43 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver");
  44 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>");
  45 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>");
  46 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>");
  47 MODULE_LICENSE("GPL");
  48
  49 #define EDID_NUM_BLOCKS_MAX 8
  50 #define EDID_BLOCK_SIZE 128
  51
  52 #define I2C_MAX_XFER_SIZE  (EDID_BLOCK_SIZE + 2)
  53
  54 #define POLL_INTERVAL_CEC_MS    10
  55 #define POLL_INTERVAL_MS        1000
  56
  57 static const struct v4l2_dv_timings_cap tc358743_timings_cap = {
  58         .type = V4L2_DV_BT_656_1120,
  59         /* keep this initialization for compatibility with GCC < 4.4.6 */
  60         .reserved = { 0 },
  61         /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */
  62         V4L2_INIT_BT_TIMINGS(640, 1920, 350, 1200, 13000000, 165000000,
  63                         V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
  64                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
  65                         V4L2_DV_BT_CAP_PROGRESSIVE |
  66                         V4L2_DV_BT_CAP_REDUCED_BLANKING |
  67                         V4L2_DV_BT_CAP_CUSTOM)
  68 };
  69
  70 struct tc358743_state {
  71         struct tc358743_platform_data pdata;
  72         struct v4l2_mbus_config_mipi_csi2 bus;
  73         struct v4l2_subdev sd;
  74         struct media_pad pad;
  75         struct v4l2_ctrl_handler hdl;
  76         struct i2c_client *i2c_client;
  77         /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */
  78         struct mutex confctl_mutex;
  79
  80         /* controls */
  81         struct v4l2_ctrl *detect_tx_5v_ctrl;
  82         struct v4l2_ctrl *audio_sampling_rate_ctrl;
  83         struct v4l2_ctrl *audio_present_ctrl;
  84
  85         struct delayed_work delayed_work_enable_hotplug;
  86
  87         struct timer_list timer;
  88         struct work_struct work_i2c_poll;
  89
  90         /* edid  */
  91         u8 edid_blocks_written;
  92
  93         struct v4l2_dv_timings timings;
  94         u32 mbus_fmt_code;
  95         u8 csi_lanes_in_use;
  96
  97         struct gpio_desc *reset_gpio;
  98
  99         struct cec_adapter *cec_adap;
 100 };
 101
 102 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
 103                 bool cable_connected);
 104 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd);
 105
 106 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd)
 107 {
 108         return container_of(sd, struct tc358743_state, sd);
 109 }
 110
 111 /* --------------- I2C --------------- */
 112
 113 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
 114 {
 115         struct tc358743_state *state = to_state(sd);
 116         struct i2c_client *client = state->i2c_client;
 117         int err;
 118         u8 buf[2] = { reg >> 8, reg & 0xff };
 119         struct i2c_msg msgs[] = {
 120                 {
 121                         .addr = client->addr,
 122                         .flags = 0,
 123                         .len = 2,
 124                         .buf = buf,
 125                 },
 126                 {
 127                         .addr = client->addr,
 128                         .flags = I2C_M_RD,
 129                         .len = n,
 130                         .buf = values,
 131                 },
 132         };
 133
 134         err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
 135         if (err != ARRAY_SIZE(msgs)) {
 136                 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed: %d\n",
 137                                 __func__, reg, client->addr, err);
 138         }
 139 }
 140
 141 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n)
 142 {
 143         struct tc358743_state *state = to_state(sd);
 144         struct i2c_client *client = state->i2c_client;
 145         int err, i;
 146         struct i2c_msg msg;
 147         u8 data[I2C_MAX_XFER_SIZE];
 148
 149         if ((2 + n) > I2C_MAX_XFER_SIZE) {
 150                 n = I2C_MAX_XFER_SIZE - 2;
 151                 v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n",
 152                           reg, 2 + n);
 153         }
 154
 155         msg.addr = client->addr;
 156         msg.buf = data;
 157         msg.len = 2 + n;
 158         msg.flags = 0;
 159
 160         data[0] = reg >> 8;
 161         data[1] = reg & 0xff;
 162
 163         for (i = 0; i < n; i++)
 164                 data[2 + i] = values[i];
 165
 166         err = i2c_transfer(client->adapter, &msg, 1);
 167         if (err != 1) {
 168                 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed: %d\n",
 169                                 __func__, reg, client->addr, err);
 170                 return;
 171         }
 172
 173         if (debug < 3)
 174                 return;
 175
 176         switch (n) {
 177         case 1:
 178                 v4l2_info(sd, "I2C write 0x%04x = 0x%02x",
 179                                 reg, data[2]);
 180                 break;
 181         case 2:
 182                 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x",
 183                                 reg, data[3], data[2]);
 184                 break;
 185         case 4:
 186                 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x",
 187                                 reg, data[5], data[4], data[3], data[2]);
 188                 break;
 189         default:
 190                 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n",
 191                                 n, reg);
 192         }
 193 }
 194
 195 static noinline u32 i2c_rdreg(struct v4l2_subdev *sd, u16 reg, u32 n)
 196 {
 197         __le32 val = 0;
 198
 199         i2c_rd(sd, reg, (u8 __force *)&val, n);
 200
 201         return le32_to_cpu(val);
 202 }
 203
 204 static noinline void i2c_wrreg(struct v4l2_subdev *sd, u16 reg, u32 val, u32 n)
 205 {
 206         __le32 raw = cpu_to_le32(val);
 207
 208         i2c_wr(sd, reg, (u8 __force *)&raw, n);
 209 }
 210
 211 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg)
 212 {
 213         return i2c_rdreg(sd, reg, 1);
 214 }
 215
 216 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val)
 217 {
 218         i2c_wrreg(sd, reg, val, 1);
 219 }
 220
 221 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg,
 222                 u8 mask, u8 val)
 223 {
 224         i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 1) & mask) | val, 1);
 225 }
 226
 227 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg)
 228 {
 229         return i2c_rdreg(sd, reg, 2);
 230 }
 231
 232 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val)
 233 {
 234         i2c_wrreg(sd, reg, val, 2);
 235 }
 236
 237 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val)
 238 {
 239         i2c_wrreg(sd, reg, (i2c_rdreg(sd, reg, 2) & mask) | val, 2);
 240 }
 241
 242 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg)
 243 {
 244         return i2c_rdreg(sd, reg, 4);
 245 }
 246
 247 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val)
 248 {
 249         i2c_wrreg(sd, reg, val, 4);
 250 }
 251
 252 /* --------------- STATUS --------------- */
 253
 254 static inline bool is_hdmi(struct v4l2_subdev *sd)
 255 {
 256         return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI;
 257 }
 258
 259 static inline bool tx_5v_power_present(struct v4l2_subdev *sd)
 260 {
 261         return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V;
 262 }
 263
 264 static inline bool no_signal(struct v4l2_subdev *sd)
 265 {
 266         return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS);
 267 }
 268
 269 static inline bool no_sync(struct v4l2_subdev *sd)
 270 {
 271         return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC);
 272 }
 273
 274 static inline bool audio_present(struct v4l2_subdev *sd)
 275 {
 276         return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE;
 277 }
 278
 279 static int get_audio_sampling_rate(struct v4l2_subdev *sd)
 280 {
 281         static const int code_to_rate[] = {
 282                 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800,
 283                 88200, 768000, 96000, 705600, 176400, 0, 192000, 0
 284         };
 285
 286         /* Register FS_SET is not cleared when the cable is disconnected */
 287         if (no_signal(sd))
 288                 return 0;
 289
 290         return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS];
 291 }
 292
 293 /* --------------- TIMINGS --------------- */
 294
 295 static inline unsigned fps(const struct v4l2_bt_timings *t)
 296 {
 297         if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t))
 298                 return 0;
 299
 300         return DIV_ROUND_CLOSEST((unsigned)t->pixelclock,
 301                         V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t));
 302 }
 303
 304 static int tc358743_get_detected_timings(struct v4l2_subdev *sd,
 305                                      struct v4l2_dv_timings *timings)
 306 {
 307         struct v4l2_bt_timings *bt = &timings->bt;
 308         unsigned width, height, frame_width, frame_height, frame_interval, fps;
 309
 310         memset(timings, 0, sizeof(struct v4l2_dv_timings));
 311
 312         if (no_signal(sd)) {
 313                 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
 314                 return -ENOLINK;
 315         }
 316         if (no_sync(sd)) {
 317                 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__);
 318                 return -ENOLCK;
 319         }
 320
 321         timings->type = V4L2_DV_BT_656_1120;
 322         bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ?
 323                 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
 324
 325         width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) +
 326                 i2c_rd8(sd, DE_WIDTH_H_LO);
 327         height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) +
 328                 i2c_rd8(sd, DE_WIDTH_V_LO);
 329         frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) +
 330                 i2c_rd8(sd, H_SIZE_LO);
 331         frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) +
 332                 i2c_rd8(sd, V_SIZE_LO)) / 2;
 333         /* frame interval in milliseconds * 10
 334          * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */
 335         frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) +
 336                 i2c_rd8(sd, FV_CNT_LO);
 337         fps = (frame_interval > 0) ?
 338                 DIV_ROUND_CLOSEST(10000, frame_interval) : 0;
 339
 340         bt->width = width;
 341         bt->height = height;
 342         bt->vsync = frame_height - height;
 343         bt->hsync = frame_width - width;
 344         bt->pixelclock = frame_width * frame_height * fps;
 345         if (bt->interlaced == V4L2_DV_INTERLACED) {
 346                 bt->height *= 2;
 347                 bt->il_vsync = bt->vsync + 1;
 348                 bt->pixelclock /= 2;
 349         }
 350
 351         return 0;
 352 }
 353
 354 /* --------------- HOTPLUG / HDCP / EDID --------------- */
 355
 356 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work)
 357 {
 358         struct delayed_work *dwork = to_delayed_work(work);
 359         struct tc358743_state *state = container_of(dwork,
 360                         struct tc358743_state, delayed_work_enable_hotplug);
 361         struct v4l2_subdev *sd = &state->sd;
 362
 363         v4l2_dbg(2, debug, sd, "%s:\n", __func__);
 364
 365         i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0);
 366 }
 367
 368 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable)
 369 {
 370         v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ?
 371                                 "enable" : "disable");
 372
 373         if (enable) {
 374                 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, KEY_RD_CMD);
 375
 376                 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION, 0);
 377
 378                 i2c_wr8_and_or(sd, HDCP_REG1, 0xff,
 379                                 MASK_AUTH_UNAUTH_SEL_16_FRAMES |
 380                                 MASK_AUTH_UNAUTH_AUTO);
 381
 382                 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET,
 383                                 SET_AUTO_P3_RESET_FRAMES(0x0f));
 384         } else {
 385                 i2c_wr8_and_or(sd, HDCP_MODE, ~MASK_MANUAL_AUTHENTICATION,
 386                                 MASK_MANUAL_AUTHENTICATION);
 387         }
 388 }
 389
 390 static void tc358743_disable_edid(struct v4l2_subdev *sd)
 391 {
 392         struct tc358743_state *state = to_state(sd);
 393
 394         v4l2_dbg(2, debug, sd, "%s:\n", __func__);
 395
 396         cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
 397
 398         /* DDC access to EDID is also disabled when hotplug is disabled. See
 399          * register DDC_CTL */
 400         i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0);
 401 }
 402
 403 static void tc358743_enable_edid(struct v4l2_subdev *sd)
 404 {
 405         struct tc358743_state *state = to_state(sd);
 406
 407         if (state->edid_blocks_written == 0) {
 408                 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__);
 409                 tc358743_s_ctrl_detect_tx_5v(sd);
 410                 return;
 411         }
 412
 413         v4l2_dbg(2, debug, sd, "%s:\n", __func__);
 414
 415         /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when
 416          * hotplug is enabled. See register DDC_CTL */
 417         schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 10);
 418
 419         tc358743_enable_interrupts(sd, true);
 420         tc358743_s_ctrl_detect_tx_5v(sd);
 421 }
 422
 423 static void tc358743_erase_bksv(struct v4l2_subdev *sd)
 424 {
 425         int i;
 426
 427         for (i = 0; i < 5; i++)
 428                 i2c_wr8(sd, BKSV + i, 0);
 429 }
 430
 431 /* --------------- AVI infoframe --------------- */
 432
 433 static void print_avi_infoframe(struct v4l2_subdev *sd)
 434 {
 435         struct i2c_client *client = v4l2_get_subdevdata(sd);
 436         struct device *dev = &client->dev;
 437         union hdmi_infoframe frame;
 438         u8 buffer[HDMI_INFOFRAME_SIZE(AVI)];
 439
 440         if (!is_hdmi(sd)) {
 441                 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n");
 442                 return;
 443         }
 444
 445         i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI));
 446
 447         if (hdmi_infoframe_unpack(&frame, buffer, sizeof(buffer)) < 0) {
 448                 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__);
 449                 return;
 450         }
 451
 452         hdmi_infoframe_log(KERN_INFO, dev, &frame);
 453 }
 454
 455 /* --------------- CTRLS --------------- */
 456
 457 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd)
 458 {
 459         struct tc358743_state *state = to_state(sd);
 460
 461         return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl,
 462                         tx_5v_power_present(sd));
 463 }
 464
 465 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd)
 466 {
 467         struct tc358743_state *state = to_state(sd);
 468
 469         return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl,
 470                         get_audio_sampling_rate(sd));
 471 }
 472
 473 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd)
 474 {
 475         struct tc358743_state *state = to_state(sd);
 476
 477         return v4l2_ctrl_s_ctrl(state->audio_present_ctrl,
 478                         audio_present(sd));
 479 }
 480
 481 static int tc358743_update_controls(struct v4l2_subdev *sd)
 482 {
 483         int ret = 0;
 484
 485         ret |= tc358743_s_ctrl_detect_tx_5v(sd);
 486         ret |= tc358743_s_ctrl_audio_sampling_rate(sd);
 487         ret |= tc358743_s_ctrl_audio_present(sd);
 488
 489         return ret;
 490 }
 491
 492 /* --------------- INIT --------------- */
 493
 494 static void tc358743_reset_phy(struct v4l2_subdev *sd)
 495 {
 496         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
 497
 498         i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0);
 499         i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL);
 500 }
 501
 502 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask)
 503 {
 504         u16 sysctl = i2c_rd16(sd, SYSCTL);
 505
 506         i2c_wr16(sd, SYSCTL, sysctl | mask);
 507         i2c_wr16(sd, SYSCTL, sysctl & ~mask);
 508 }
 509
 510 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable)
 511 {
 512         i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP,
 513                         enable ? MASK_SLEEP : 0);
 514 }
 515
 516 static inline void enable_stream(struct v4l2_subdev *sd, bool enable)
 517 {
 518         struct tc358743_state *state = to_state(sd);
 519
 520         v4l2_dbg(3, debug, sd, "%s: %sable\n",
 521                         __func__, enable ? "en" : "dis");
 522
 523         if (enable) {
 524                 /* It is critical for CSI receiver to see lane transition
 525                  * LP11->HS. Set to non-continuous mode to enable clock lane
 526                  * LP11 state. */
 527                 i2c_wr32(sd, TXOPTIONCNTRL, 0);
 528                 /* Set to continuous mode to trigger LP11->HS transition */
 529                 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE);
 530                 /* Unmute video */
 531                 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE);
 532         } else {
 533                 /* Mute video so that all data lanes go to LSP11 state.
 534                  * No data is output to CSI Tx block. */
 535                 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE);
 536         }
 537
 538         mutex_lock(&state->confctl_mutex);
 539         i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN),
 540                         enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0);
 541         mutex_unlock(&state->confctl_mutex);
 542 }
 543
 544 static void tc358743_set_pll(struct v4l2_subdev *sd)
 545 {
 546         struct tc358743_state *state = to_state(sd);
 547         struct tc358743_platform_data *pdata = &state->pdata;
 548         u16 pllctl0 = i2c_rd16(sd, PLLCTL0);
 549         u16 pllctl1 = i2c_rd16(sd, PLLCTL1);
 550         u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) |
 551                 SET_PLL_FBD(pdata->pll_fbd);
 552         u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
 553
 554         v4l2_dbg(2, debug, sd, "%s:\n", __func__);
 555
 556         /* Only rewrite when needed (new value or disabled), since rewriting
 557          * triggers another format change event. */
 558         if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) {
 559                 u16 pll_frs;
 560
 561                 if (hsck > 500000000)
 562                         pll_frs = 0x0;
 563                 else if (hsck > 250000000)
 564                         pll_frs = 0x1;
 565                 else if (hsck > 125000000)
 566                         pll_frs = 0x2;
 567                 else
 568                         pll_frs = 0x3;
 569
 570                 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__);
 571                 tc358743_sleep_mode(sd, true);
 572                 i2c_wr16(sd, PLLCTL0, pllctl0_new);
 573                 i2c_wr16_and_or(sd, PLLCTL1,
 574                                 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN),
 575                                 (SET_PLL_FRS(pll_frs) | MASK_RESETB |
 576                                  MASK_PLL_EN));
 577                 udelay(10); /* REF_02, Sheet "Source HDMI" */
 578                 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN);
 579                 tc358743_sleep_mode(sd, false);
 580         }
 581 }
 582
 583 static void tc358743_set_ref_clk(struct v4l2_subdev *sd)
 584 {
 585         struct tc358743_state *state = to_state(sd);
 586         struct tc358743_platform_data *pdata = &state->pdata;
 587         u32 sys_freq;
 588         u32 lockdet_ref;
 589         u32 cec_freq;
 590         u16 fh_min;
 591         u16 fh_max;
 592
 593         BUG_ON(!(pdata->refclk_hz == 26000000 ||
 594                  pdata->refclk_hz == 27000000 ||
 595                  pdata->refclk_hz == 42000000));
 596
 597         sys_freq = pdata->refclk_hz / 10000;
 598         i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00ff);
 599         i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xff00) >> 8);
 600
 601         i2c_wr8_and_or(sd, PHY_CTL0, ~MASK_PHY_SYSCLK_IND,
 602                         (pdata->refclk_hz == 42000000) ?
 603                         MASK_PHY_SYSCLK_IND : 0x0);
 604
 605         fh_min = pdata->refclk_hz / 100000;
 606         i2c_wr8(sd, FH_MIN0, fh_min & 0x00ff);
 607         i2c_wr8(sd, FH_MIN1, (fh_min & 0xff00) >> 8);
 608
 609         fh_max = (fh_min * 66) / 10;
 610         i2c_wr8(sd, FH_MAX0, fh_max & 0x00ff);
 611         i2c_wr8(sd, FH_MAX1, (fh_max & 0xff00) >> 8);
 612
 613         lockdet_ref = pdata->refclk_hz / 100;
 614         i2c_wr8(sd, LOCKDET_REF0, lockdet_ref & 0x0000ff);
 615         i2c_wr8(sd, LOCKDET_REF1, (lockdet_ref & 0x00ff00) >> 8);
 616         i2c_wr8(sd, LOCKDET_REF2, (lockdet_ref & 0x0f0000) >> 16);
 617
 618         i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD,
 619                         (pdata->refclk_hz == 27000000) ?
 620                         MASK_NCO_F0_MOD_27MHZ : 0x0);
 621
 622         /*
 623          * Trial and error suggests that the default register value
 624          * of 656 is for a 42 MHz reference clock. Use that to derive
 625          * a new value based on the actual reference clock.
 626          */
 627         cec_freq = (656 * sys_freq) / 4200;
 628         i2c_wr16(sd, CECHCLK, cec_freq);
 629         i2c_wr16(sd, CECLCLK, cec_freq);
 630 }
 631
 632 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd)
 633 {
 634         struct tc358743_state *state = to_state(sd);
 635
 636         switch (state->mbus_fmt_code) {
 637         case MEDIA_BUS_FMT_UYVY8_1X16:
 638                 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__);
 639                 i2c_wr8_and_or(sd, VOUT_SET2,
 640                                 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
 641                                 MASK_SEL422 | MASK_VOUT_422FIL_100);
 642                 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
 643                                 MASK_VOUT_COLOR_601_YCBCR_LIMITED);
 644                 mutex_lock(&state->confctl_mutex);
 645                 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT,
 646                                 MASK_YCBCRFMT_422_8_BIT);
 647                 mutex_unlock(&state->confctl_mutex);
 648                 break;
 649         case MEDIA_BUS_FMT_RGB888_1X24:
 650                 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__);
 651                 i2c_wr8_and_or(sd, VOUT_SET2,
 652                                 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff,
 653                                 0x00);
 654                 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff,
 655                                 MASK_VOUT_COLOR_RGB_FULL);
 656                 mutex_lock(&state->confctl_mutex);
 657                 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0);
 658                 mutex_unlock(&state->confctl_mutex);
 659                 break;
 660         default:
 661                 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n",
 662                                 __func__, state->mbus_fmt_code);
 663         }
 664 }
 665
 666 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd)
 667 {
 668         struct tc358743_state *state = to_state(sd);
 669         struct v4l2_bt_timings *bt = &state->timings.bt;
 670         struct tc358743_platform_data *pdata = &state->pdata;
 671         u32 bits_pr_pixel =
 672                 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ?  16 : 24;
 673         u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel;
 674         u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd;
 675
 676         return DIV_ROUND_UP(bps, bps_pr_lane);
 677 }
 678
 679 static void tc358743_set_csi(struct v4l2_subdev *sd)
 680 {
 681         struct tc358743_state *state = to_state(sd);
 682         struct tc358743_platform_data *pdata = &state->pdata;
 683         unsigned lanes = tc358743_num_csi_lanes_needed(sd);
 684
 685         v4l2_dbg(3, debug, sd, "%s:\n", __func__);
 686
 687         state->csi_lanes_in_use = lanes;
 688
 689         tc358743_reset(sd, MASK_CTXRST);
 690
 691         if (lanes < 1)
 692                 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE);
 693         if (lanes < 1)
 694                 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE);
 695         if (lanes < 2)
 696                 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE);
 697         if (lanes < 3)
 698                 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE);
 699         if (lanes < 4)
 700                 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE);
 701
 702         i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt);
 703         i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt);
 704         i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt);
 705         i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt);
 706         i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt);
 707         i2c_wr32(sd, TWAKEUP, pdata->twakeup);
 708         i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt);
 709         i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt);
 710         i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt);
 711
 712         i2c_wr32(sd, HSTXVREGEN,
 713                         ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) |
 714                         ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) |
 715                         ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) |
 716                         ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) |
 717                         ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0));
 718
 719         i2c_wr32(sd, TXOPTIONCNTRL, (state->bus.flags &
 720                  V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK) ? 0 : MASK_CONTCLKMODE);
 721         i2c_wr32(sd, STARTCNTRL, MASK_START);
 722         i2c_wr32(sd, CSI_START, MASK_STRT);
 723
 724         i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
 725                         MASK_ADDRESS_CSI_CONTROL |
 726                         MASK_CSI_MODE |
 727                         MASK_TXHSMD |
 728                         ((lanes == 4) ? MASK_NOL_4 :
 729                          (lanes == 3) ? MASK_NOL_3 :
 730                          (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1));
 731
 732         i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
 733                         MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK |
 734                         MASK_WCER | MASK_INER);
 735
 736         i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR |
 737                         MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK);
 738
 739         i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET |
 740                         MASK_ADDRESS_CSI_INT_ENA | MASK_INTER);
 741 }
 742
 743 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd)
 744 {
 745         struct tc358743_state *state = to_state(sd);
 746         struct tc358743_platform_data *pdata = &state->pdata;
 747
 748         /* Default settings from REF_02, sheet "Source HDMI"
 749          * and custom settings as platform data */
 750         i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0);
 751         i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) |
 752                         SET_FREQ_RANGE_MODE_CYCLES(1));
 753         i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn,
 754                         (pdata->hdmi_phy_auto_reset_tmds_detected ?
 755                          MASK_PHY_AUTO_RST2 : 0) |
 756                         (pdata->hdmi_phy_auto_reset_tmds_in_range ?
 757                          MASK_PHY_AUTO_RST3 : 0) |
 758                         (pdata->hdmi_phy_auto_reset_tmds_valid ?
 759                          MASK_PHY_AUTO_RST4 : 0));
 760         i2c_wr8(sd, PHY_BIAS, 0x40);
 761         i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a));
 762         i2c_wr8(sd, AVM_CTL, 45);
 763         i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V,
 764                         pdata->hdmi_detection_delay << 4);
 765         i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST),
 766                         (pdata->hdmi_phy_auto_reset_hsync_out_of_range ?
 767                          MASK_H_PI_RST : 0) |
 768                         (pdata->hdmi_phy_auto_reset_vsync_out_of_range ?
 769                          MASK_V_PI_RST : 0));
 770         i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY);
 771 }
 772
 773 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd)
 774 {
 775         struct tc358743_state *state = to_state(sd);
 776
 777         /* Default settings from REF_02, sheet "Source HDMI" */
 778         i2c_wr8(sd, FORCE_MUTE, 0x00);
 779         i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 |
 780                         MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 |
 781                         MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0);
 782         i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9);
 783         i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2);
 784         i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500));
 785         i2c_wr8(sd, FS_MUTE, 0x00);
 786         i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE);
 787         i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE);
 788         i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM);
 789         i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM);
 790         i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S);
 791         i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100));
 792
 793         mutex_lock(&state->confctl_mutex);
 794         i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 |
 795                         MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX);
 796         mutex_unlock(&state->confctl_mutex);
 797 }
 798
 799 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd)
 800 {
 801         /* Default settings from REF_02, sheet "Source HDMI" */
 802         i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE |
 803                         MASK_ACP_INT_MODE | MASK_VS_INT_MODE |
 804                         MASK_SPD_INT_MODE | MASK_MS_INT_MODE |
 805                         MASK_AUD_INT_MODE | MASK_AVI_INT_MODE);
 806         i2c_wr8(sd, NO_PKT_LIMIT, 0x2c);
 807         i2c_wr8(sd, NO_PKT_CLR, 0x53);
 808         i2c_wr8(sd, ERR_PK_LIMIT, 0x01);
 809         i2c_wr8(sd, NO_PKT_LIMIT2, 0x30);
 810         i2c_wr8(sd, NO_GDB_LIMIT, 0x10);
 811 }
 812
 813 static void tc358743_initial_setup(struct v4l2_subdev *sd)
 814 {
 815         struct tc358743_state *state = to_state(sd);
 816         struct tc358743_platform_data *pdata = &state->pdata;
 817
 818         /*
 819          * IR is not supported by this driver.
 820          * CEC is only enabled if needed.
 821          */
 822         i2c_wr16_and_or(sd, SYSCTL, ~(MASK_IRRST | MASK_CECRST),
 823                                      (MASK_IRRST | MASK_CECRST));
 824
 825         tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST);
 826 #ifdef CONFIG_VIDEO_TC358743_CEC
 827         tc358743_reset(sd, MASK_CECRST);
 828 #endif
 829         tc358743_sleep_mode(sd, false);
 830
 831         i2c_wr16(sd, FIFOCTL, pdata->fifo_level);
 832
 833         tc358743_set_ref_clk(sd);
 834
 835         i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE,
 836                         pdata->ddc5v_delay & MASK_DDC5V_MODE);
 837         i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC);
 838
 839         tc358743_set_hdmi_phy(sd);
 840         tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp);
 841         tc358743_set_hdmi_audio(sd);
 842         tc358743_set_hdmi_info_frame_mode(sd);
 843
 844         /* All CE and IT formats are detected as RGB full range in DVI mode */
 845         i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0);
 846
 847         i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE,
 848                         MASK_VOUTCOLORMODE_AUTO);
 849         i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT);
 850 }
 851
 852 /* --------------- CEC --------------- */
 853
 854 #ifdef CONFIG_VIDEO_TC358743_CEC
 855 static int tc358743_cec_adap_enable(struct cec_adapter *adap, bool enable)
 856 {
 857         struct tc358743_state *state = adap->priv;
 858         struct v4l2_subdev *sd = &state->sd;
 859
 860         i2c_wr32(sd, CECIMSK, enable ? MASK_CECTIM | MASK_CECRIM : 0);
 861         i2c_wr32(sd, CECICLR, MASK_CECTICLR | MASK_CECRICLR);
 862         i2c_wr32(sd, CECEN, enable);
 863         if (enable)
 864                 i2c_wr32(sd, CECREN, MASK_CECREN);
 865         return 0;
 866 }
 867
 868 static int tc358743_cec_adap_monitor_all_enable(struct cec_adapter *adap,
 869                                                 bool enable)
 870 {
 871         struct tc358743_state *state = adap->priv;
 872         struct v4l2_subdev *sd = &state->sd;
 873         u32 reg;
 874
 875         reg = i2c_rd32(sd, CECRCTL1);
 876         if (enable)
 877                 reg |= MASK_CECOTH;
 878         else
 879                 reg &= ~MASK_CECOTH;
 880         i2c_wr32(sd, CECRCTL1, reg);
 881         return 0;
 882 }
 883
 884 static int tc358743_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
 885 {
 886         struct tc358743_state *state = adap->priv;
 887         struct v4l2_subdev *sd = &state->sd;
 888         unsigned int la = 0;
 889
 890         if (log_addr != CEC_LOG_ADDR_INVALID) {
 891                 la = i2c_rd32(sd, CECADD);
 892                 la |= 1 << log_addr;
 893         }
 894         i2c_wr32(sd, CECADD, la);
 895         return 0;
 896 }
 897
 898 static int tc358743_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
 899                                    u32 signal_free_time, struct cec_msg *msg)
 900 {
 901         struct tc358743_state *state = adap->priv;
 902         struct v4l2_subdev *sd = &state->sd;
 903         unsigned int i;
 904
 905         i2c_wr32(sd, CECTCTL,
 906                  (cec_msg_is_broadcast(msg) ? MASK_CECBRD : 0) |
 907                  (signal_free_time - 1));
 908         for (i = 0; i < msg->len; i++)
 909                 i2c_wr32(sd, CECTBUF1 + i * 4,
 910                         msg->msg[i] | ((i == msg->len - 1) ? MASK_CECTEOM : 0));
 911         i2c_wr32(sd, CECTEN, MASK_CECTEN);
 912         return 0;
 913 }
 914
 915 static const struct cec_adap_ops tc358743_cec_adap_ops = {
 916         .adap_enable = tc358743_cec_adap_enable,
 917         .adap_log_addr = tc358743_cec_adap_log_addr,
 918         .adap_transmit = tc358743_cec_adap_transmit,
 919         .adap_monitor_all_enable = tc358743_cec_adap_monitor_all_enable,
 920 };
 921
 922 static void tc358743_cec_handler(struct v4l2_subdev *sd, u16 intstatus,
 923                                  bool *handled)
 924 {
 925         struct tc358743_state *state = to_state(sd);
 926         unsigned int cec_rxint, cec_txint;
 927         unsigned int clr = 0;
 928
 929         cec_rxint = i2c_rd32(sd, CECRSTAT);
 930         cec_txint = i2c_rd32(sd, CECTSTAT);
 931
 932         if (intstatus & MASK_CEC_RINT)
 933                 clr |= MASK_CECRICLR;
 934         if (intstatus & MASK_CEC_TINT)
 935                 clr |= MASK_CECTICLR;
 936         i2c_wr32(sd, CECICLR, clr);
 937
 938         if ((intstatus & MASK_CEC_TINT) && cec_txint) {
 939                 if (cec_txint & MASK_CECTIEND)
 940                         cec_transmit_attempt_done(state->cec_adap,
 941                                                   CEC_TX_STATUS_OK);
 942                 else if (cec_txint & MASK_CECTIAL)
 943                         cec_transmit_attempt_done(state->cec_adap,
 944                                                   CEC_TX_STATUS_ARB_LOST);
 945                 else if (cec_txint & MASK_CECTIACK)
 946                         cec_transmit_attempt_done(state->cec_adap,
 947                                                   CEC_TX_STATUS_NACK);
 948                 else if (cec_txint & MASK_CECTIUR) {
 949                         /*
 950                          * Not sure when this bit is set. Treat
 951                          * it as an error for now.
 952                          */
 953                         cec_transmit_attempt_done(state->cec_adap,
 954                                                   CEC_TX_STATUS_ERROR);
 955                 }
 956                 if (handled)
 957                         *handled = true;
 958         }
 959         if ((intstatus & MASK_CEC_RINT) &&
 960             (cec_rxint & MASK_CECRIEND)) {
 961                 struct cec_msg msg = {};
 962                 unsigned int i;
 963                 unsigned int v;
 964
 965                 v = i2c_rd32(sd, CECRCTR);
 966                 msg.len = v & 0x1f;
 967                 if (msg.len > CEC_MAX_MSG_SIZE)
 968                         msg.len = CEC_MAX_MSG_SIZE;
 969                 for (i = 0; i < msg.len; i++) {
 970                         v = i2c_rd32(sd, CECRBUF1 + i * 4);
 971                         msg.msg[i] = v & 0xff;
 972                 }
 973                 cec_received_msg(state->cec_adap, &msg);
 974                 if (handled)
 975                         *handled = true;
 976         }
 977         i2c_wr16(sd, INTSTATUS,
 978                  intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
 979 }
 980
 981 #endif
 982
 983 /* --------------- IRQ --------------- */
 984
 985 static void tc358743_format_change(struct v4l2_subdev *sd)
 986 {
 987         struct tc358743_state *state = to_state(sd);
 988         struct v4l2_dv_timings timings;
 989         const struct v4l2_event tc358743_ev_fmt = {
 990                 .type = V4L2_EVENT_SOURCE_CHANGE,
 991                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 992         };
 993
 994         if (tc358743_get_detected_timings(sd, &timings)) {
 995                 enable_stream(sd, false);
 996
 997                 v4l2_dbg(1, debug, sd, "%s: No signal\n",
 998                                 __func__);
 999         } else {
1000                 if (!v4l2_match_dv_timings(&state->timings, &timings, 0, false))
1001                         enable_stream(sd, false);
1002
1003                 if (debug)
1004                         v4l2_print_dv_timings(sd->name,
1005                                         "tc358743_format_change: New format: ",
1006                                         &timings, false);
1007         }
1008
1009         if (sd->devnode)
1010                 v4l2_subdev_notify_event(sd, &tc358743_ev_fmt);
1011 }
1012
1013 static void tc358743_init_interrupts(struct v4l2_subdev *sd)
1014 {
1015         u16 i;
1016
1017         /* clear interrupt status registers */
1018         for (i = SYS_INT; i <= KEY_INT; i++)
1019                 i2c_wr8(sd, i, 0xff);
1020
1021         i2c_wr16(sd, INTSTATUS, 0xffff);
1022 }
1023
1024 static void tc358743_enable_interrupts(struct v4l2_subdev *sd,
1025                 bool cable_connected)
1026 {
1027         v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__,
1028                         cable_connected);
1029
1030         if (cable_connected) {
1031                 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET |
1032                                         MASK_M_HDMI_DET) & 0xff);
1033                 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG);
1034                 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK |
1035                                         MASK_M_AF_UNLOCK) & 0xff);
1036                 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END);
1037                 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG);
1038         } else {
1039                 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff);
1040                 i2c_wr8(sd, CLK_INTM, 0xff);
1041                 i2c_wr8(sd, CBIT_INTM, 0xff);
1042                 i2c_wr8(sd, AUDIO_INTM, 0xff);
1043                 i2c_wr8(sd, MISC_INTM, 0xff);
1044         }
1045 }
1046
1047 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd,
1048                 bool *handled)
1049 {
1050         u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM);
1051         u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask;
1052
1053         i2c_wr8(sd, AUDIO_INT, audio_int);
1054
1055         v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int);
1056
1057         tc358743_s_ctrl_audio_sampling_rate(sd);
1058         tc358743_s_ctrl_audio_present(sd);
1059 }
1060
1061 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled)
1062 {
1063         v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR));
1064
1065         i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER);
1066 }
1067
1068 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd,
1069                 bool *handled)
1070 {
1071         u8 misc_int_mask = i2c_rd8(sd, MISC_INTM);
1072         u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask;
1073
1074         i2c_wr8(sd, MISC_INT, misc_int);
1075
1076         v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int);
1077
1078         if (misc_int & MASK_I_SYNC_CHG) {
1079                 /* Reset the HDMI PHY to try to trigger proper lock on the
1080                  * incoming video format. Erase BKSV to prevent that old keys
1081                  * are used when a new source is connected. */
1082                 if (no_sync(sd) || no_signal(sd)) {
1083                         tc358743_reset_phy(sd);
1084                         tc358743_erase_bksv(sd);
1085                 }
1086
1087                 tc358743_format_change(sd);
1088
1089                 misc_int &= ~MASK_I_SYNC_CHG;
1090                 if (handled)
1091                         *handled = true;
1092         }
1093
1094         if (misc_int) {
1095                 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n",
1096                                 __func__, misc_int);
1097         }
1098 }
1099
1100 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd,
1101                 bool *handled)
1102 {
1103         u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM);
1104         u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask;
1105
1106         i2c_wr8(sd, CBIT_INT, cbit_int);
1107
1108         v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int);
1109
1110         if (cbit_int & MASK_I_CBIT_FS) {
1111
1112                 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n",
1113                                 __func__);
1114                 tc358743_s_ctrl_audio_sampling_rate(sd);
1115
1116                 cbit_int &= ~MASK_I_CBIT_FS;
1117                 if (handled)
1118                         *handled = true;
1119         }
1120
1121         if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) {
1122
1123                 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n",
1124                                 __func__);
1125                 tc358743_s_ctrl_audio_present(sd);
1126
1127                 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK);
1128                 if (handled)
1129                         *handled = true;
1130         }
1131
1132         if (cbit_int) {
1133                 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n",
1134                                 __func__, cbit_int);
1135         }
1136 }
1137
1138 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled)
1139 {
1140         u8 clk_int_mask = i2c_rd8(sd, CLK_INTM);
1141         u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask;
1142
1143         /* Bit 7 and bit 6 are set even when they are masked */
1144         i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG);
1145
1146         v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int);
1147
1148         if (clk_int & (MASK_I_IN_DE_CHG)) {
1149
1150                 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n",
1151                                 __func__);
1152
1153                 /* If the source switch to a new resolution with the same pixel
1154                  * frequency as the existing (e.g. 1080p25 -> 720p50), the
1155                  * I_SYNC_CHG interrupt is not always triggered, while the
1156                  * I_IN_DE_CHG interrupt seems to work fine. Format change
1157                  * notifications are only sent when the signal is stable to
1158                  * reduce the number of notifications. */
1159                 if (!no_signal(sd) && !no_sync(sd))
1160                         tc358743_format_change(sd);
1161
1162                 clk_int &= ~(MASK_I_IN_DE_CHG);
1163                 if (handled)
1164                         *handled = true;
1165         }
1166
1167         if (clk_int) {
1168                 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n",
1169                                 __func__, clk_int);
1170         }
1171 }
1172
1173 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled)
1174 {
1175         struct tc358743_state *state = to_state(sd);
1176         u8 sys_int_mask = i2c_rd8(sd, SYS_INTM);
1177         u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask;
1178
1179         i2c_wr8(sd, SYS_INT, sys_int);
1180
1181         v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int);
1182
1183         if (sys_int & MASK_I_DDC) {
1184                 bool tx_5v = tx_5v_power_present(sd);
1185
1186                 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n",
1187                                 __func__, tx_5v ?  "yes" : "no");
1188
1189                 if (tx_5v) {
1190                         tc358743_enable_edid(sd);
1191                 } else {
1192                         tc358743_enable_interrupts(sd, false);
1193                         tc358743_disable_edid(sd);
1194                         memset(&state->timings, 0, sizeof(state->timings));
1195                         tc358743_erase_bksv(sd);
1196                         tc358743_update_controls(sd);
1197                 }
1198
1199                 sys_int &= ~MASK_I_DDC;
1200                 if (handled)
1201                         *handled = true;
1202         }
1203
1204         if (sys_int & MASK_I_DVI) {
1205                 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n",
1206                                 __func__);
1207
1208                 /* Reset the HDMI PHY to try to trigger proper lock on the
1209                  * incoming video format. Erase BKSV to prevent that old keys
1210                  * are used when a new source is connected. */
1211                 if (no_sync(sd) || no_signal(sd)) {
1212                         tc358743_reset_phy(sd);
1213                         tc358743_erase_bksv(sd);
1214                 }
1215
1216                 sys_int &= ~MASK_I_DVI;
1217                 if (handled)
1218                         *handled = true;
1219         }
1220
1221         if (sys_int & MASK_I_HDMI) {
1222                 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n",
1223                                 __func__);
1224
1225                 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */
1226                 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON);
1227
1228                 sys_int &= ~MASK_I_HDMI;
1229                 if (handled)
1230                         *handled = true;
1231         }
1232
1233         if (sys_int) {
1234                 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n",
1235                                 __func__, sys_int);
1236         }
1237 }
1238
1239 /* --------------- CORE OPS --------------- */
1240
1241 static int tc358743_log_status(struct v4l2_subdev *sd)
1242 {
1243         struct tc358743_state *state = to_state(sd);
1244         struct v4l2_dv_timings timings;
1245         uint8_t hdmi_sys_status =  i2c_rd8(sd, SYS_STATUS);
1246         uint16_t sysctl = i2c_rd16(sd, SYSCTL);
1247         u8 vi_status3 =  i2c_rd8(sd, VI_STATUS3);
1248         const int deep_color_mode[4] = { 8, 10, 12, 16 };
1249         static const char * const input_color_space[] = {
1250                 "RGB", "YCbCr 601", "opRGB", "YCbCr 709", "NA (4)",
1251                 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601",
1252                 "NA(10)", "NA(11)", "NA(12)", "opYCC 601"};
1253
1254         v4l2_info(sd, "-----Chip status-----\n");
1255         v4l2_info(sd, "Chip ID: 0x%02x\n",
1256                         (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8);
1257         v4l2_info(sd, "Chip revision: 0x%02x\n",
1258                         i2c_rd16(sd, CHIPID) & MASK_REVID);
1259         v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n",
1260                         !!(sysctl & MASK_IRRST),
1261                         !!(sysctl & MASK_CECRST),
1262                         !!(sysctl & MASK_CTXRST),
1263                         !!(sysctl & MASK_HDMIRST));
1264         v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off");
1265         v4l2_info(sd, "Cable detected (+5V power): %s\n",
1266                         hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no");
1267         v4l2_info(sd, "DDC lines enabled: %s\n",
1268                         (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ?
1269                         "yes" : "no");
1270         v4l2_info(sd, "Hotplug enabled: %s\n",
1271                         (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ?
1272                         "yes" : "no");
1273         v4l2_info(sd, "CEC enabled: %s\n",
1274                         (i2c_rd16(sd, CECEN) & MASK_CECEN) ?  "yes" : "no");
1275         v4l2_info(sd, "-----Signal status-----\n");
1276         v4l2_info(sd, "TMDS signal detected: %s\n",
1277                         hdmi_sys_status & MASK_S_TMDS ? "yes" : "no");
1278         v4l2_info(sd, "Stable sync signal: %s\n",
1279                         hdmi_sys_status & MASK_S_SYNC ? "yes" : "no");
1280         v4l2_info(sd, "PHY PLL locked: %s\n",
1281                         hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no");
1282         v4l2_info(sd, "PHY DE detected: %s\n",
1283                         hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no");
1284
1285         if (tc358743_get_detected_timings(sd, &timings)) {
1286                 v4l2_info(sd, "No video detected\n");
1287         } else {
1288                 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings,
1289                                 true);
1290         }
1291         v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings,
1292                         true);
1293
1294         v4l2_info(sd, "-----CSI-TX status-----\n");
1295         v4l2_info(sd, "Lanes needed: %d\n",
1296                         tc358743_num_csi_lanes_needed(sd));
1297         v4l2_info(sd, "Lanes in use: %d\n",
1298                         state->csi_lanes_in_use);
1299         v4l2_info(sd, "Waiting for particular sync signal: %s\n",
1300                         (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ?
1301                         "yes" : "no");
1302         v4l2_info(sd, "Transmit mode: %s\n",
1303                         (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ?
1304                         "yes" : "no");
1305         v4l2_info(sd, "Receive mode: %s\n",
1306                         (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ?
1307                         "yes" : "no");
1308         v4l2_info(sd, "Stopped: %s\n",
1309                         (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ?
1310                         "yes" : "no");
1311         v4l2_info(sd, "Color space: %s\n",
1312                         state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ?
1313                         "YCbCr 422 16-bit" :
1314                         state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ?
1315                         "RGB 888 24-bit" : "Unsupported");
1316
1317         v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
1318         v4l2_info(sd, "HDCP encrypted content: %s\n",
1319                         hdmi_sys_status & MASK_S_HDCP ? "yes" : "no");
1320         v4l2_info(sd, "Input color space: %s %s range\n",
1321                         input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1],
1322                         (vi_status3 & MASK_LIMITED) ? "limited" : "full");
1323         if (!is_hdmi(sd))
1324                 return 0;
1325         v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" :
1326                         "off");
1327         v4l2_info(sd, "Deep color mode: %d-bits per channel\n",
1328                         deep_color_mode[(i2c_rd8(sd, VI_STATUS1) &
1329                                 MASK_S_DEEPCOLOR) >> 2]);
1330         print_avi_infoframe(sd);
1331
1332         return 0;
1333 }
1334
1335 #ifdef CONFIG_VIDEO_ADV_DEBUG
1336 static void tc358743_print_register_map(struct v4l2_subdev *sd)
1337 {
1338         v4l2_info(sd, "0x0000-0x00FF: Global Control Register\n");
1339         v4l2_info(sd, "0x0100-0x01FF: CSI2-TX PHY Register\n");
1340         v4l2_info(sd, "0x0200-0x03FF: CSI2-TX PPI Register\n");
1341         v4l2_info(sd, "0x0400-0x05FF: Reserved\n");
1342         v4l2_info(sd, "0x0600-0x06FF: CEC Register\n");
1343         v4l2_info(sd, "0x0700-0x84FF: Reserved\n");
1344         v4l2_info(sd, "0x8500-0x85FF: HDMIRX System Control Register\n");
1345         v4l2_info(sd, "0x8600-0x86FF: HDMIRX Audio Control Register\n");
1346         v4l2_info(sd, "0x8700-0x87FF: HDMIRX InfoFrame packet data Register\n");
1347         v4l2_info(sd, "0x8800-0x88FF: HDMIRX HDCP Port Register\n");
1348         v4l2_info(sd, "0x8900-0x89FF: HDMIRX Video Output Port & 3D Register\n");
1349         v4l2_info(sd, "0x8A00-0x8BFF: Reserved\n");
1350         v4l2_info(sd, "0x8C00-0x8FFF: HDMIRX EDID-RAM (1024bytes)\n");
1351         v4l2_info(sd, "0x9000-0x90FF: HDMIRX GBD Extraction Control\n");
1352         v4l2_info(sd, "0x9100-0x92FF: HDMIRX GBD RAM read\n");
1353         v4l2_info(sd, "0x9300-      : Reserved\n");
1354 }
1355
1356 static int tc358743_get_reg_size(u16 address)
1357 {
1358         /* REF_01 p. 66-72 */
1359         if (address <= 0x00ff)
1360                 return 2;
1361         else if ((address >= 0x0100) && (address <= 0x06FF))
1362                 return 4;
1363         else if ((address >= 0x0700) && (address <= 0x84ff))
1364                 return 2;
1365         else
1366                 return 1;
1367 }
1368
1369 static int tc358743_g_register(struct v4l2_subdev *sd,
1370                                struct v4l2_dbg_register *reg)
1371 {
1372         if (reg->reg > 0xffff) {
1373                 tc358743_print_register_map(sd);
1374                 return -EINVAL;
1375         }
1376
1377         reg->size = tc358743_get_reg_size(reg->reg);
1378
1379         reg->val = i2c_rdreg(sd, reg->reg, reg->size);
1380
1381         return 0;
1382 }
1383
1384 static int tc358743_s_register(struct v4l2_subdev *sd,
1385                                const struct v4l2_dbg_register *reg)
1386 {
1387         if (reg->reg > 0xffff) {
1388                 tc358743_print_register_map(sd);
1389                 return -EINVAL;
1390         }
1391
1392         /* It should not be possible for the user to enable HDCP with a simple
1393          * v4l2-dbg command.
1394          *
1395          * DO NOT REMOVE THIS unless all other issues with HDCP have been
1396          * resolved.
1397          */
1398         if (reg->reg == HDCP_MODE ||
1399             reg->reg == HDCP_REG1 ||
1400             reg->reg == HDCP_REG2 ||
1401             reg->reg == HDCP_REG3 ||
1402             reg->reg == BCAPS)
1403                 return 0;
1404
1405         i2c_wrreg(sd, (u16)reg->reg, reg->val,
1406                         tc358743_get_reg_size(reg->reg));
1407
1408         return 0;
1409 }
1410 #endif
1411
1412 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1413 {
1414         u16 intstatus = i2c_rd16(sd, INTSTATUS);
1415
1416         v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus);
1417
1418         if (intstatus & MASK_HDMI_INT) {
1419                 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0);
1420                 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1);
1421
1422                 if (hdmi_int0 & MASK_I_MISC)
1423                         tc358743_hdmi_misc_int_handler(sd, handled);
1424                 if (hdmi_int1 & MASK_I_CBIT)
1425                         tc358743_hdmi_cbit_int_handler(sd, handled);
1426                 if (hdmi_int1 & MASK_I_CLK)
1427                         tc358743_hdmi_clk_int_handler(sd, handled);
1428                 if (hdmi_int1 & MASK_I_SYS)
1429                         tc358743_hdmi_sys_int_handler(sd, handled);
1430                 if (hdmi_int1 & MASK_I_AUD)
1431                         tc358743_hdmi_audio_int_handler(sd, handled);
1432
1433                 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT);
1434                 intstatus &= ~MASK_HDMI_INT;
1435         }
1436
1437 #ifdef CONFIG_VIDEO_TC358743_CEC
1438         if (intstatus & (MASK_CEC_RINT | MASK_CEC_TINT)) {
1439                 tc358743_cec_handler(sd, intstatus, handled);
1440                 i2c_wr16(sd, INTSTATUS,
1441                          intstatus & (MASK_CEC_RINT | MASK_CEC_TINT));
1442                 intstatus &= ~(MASK_CEC_RINT | MASK_CEC_TINT);
1443         }
1444 #endif
1445
1446         if (intstatus & MASK_CSI_INT) {
1447                 u32 csi_int = i2c_rd32(sd, CSI_INT);
1448
1449                 if (csi_int & MASK_INTER)
1450                         tc358743_csi_err_int_handler(sd, handled);
1451
1452                 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT);
1453         }
1454
1455         intstatus = i2c_rd16(sd, INTSTATUS);
1456         if (intstatus) {
1457                 v4l2_dbg(1, debug, sd,
1458                                 "%s: Unhandled IntStatus interrupts: 0x%02x\n",
1459                                 __func__, intstatus);
1460         }
1461
1462         return 0;
1463 }
1464
1465 static irqreturn_t tc358743_irq_handler(int irq, void *dev_id)
1466 {
1467         struct tc358743_state *state = dev_id;
1468         bool handled = false;
1469
1470         tc358743_isr(&state->sd, 0, &handled);
1471
1472         return handled ? IRQ_HANDLED : IRQ_NONE;
1473 }
1474
1475 static void tc358743_irq_poll_timer(struct timer_list *t)
1476 {
1477         struct tc358743_state *state = from_timer(state, t, timer);
1478         unsigned int msecs;
1479
1480         schedule_work(&state->work_i2c_poll);
1481         /*
1482          * If CEC is present, then we need to poll more frequently,
1483          * otherwise we will miss CEC messages.
1484          */
1485         msecs = state->cec_adap ? POLL_INTERVAL_CEC_MS : POLL_INTERVAL_MS;
1486         mod_timer(&state->timer, jiffies + msecs_to_jiffies(msecs));
1487 }
1488
1489 static void tc358743_work_i2c_poll(struct work_struct *work)
1490 {
1491         struct tc358743_state *state = container_of(work,
1492                         struct tc358743_state, work_i2c_poll);
1493         bool handled;
1494
1495         tc358743_isr(&state->sd, 0, &handled);
1496 }
1497
1498 static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
1499                                     struct v4l2_event_subscription *sub)
1500 {
1501         switch (sub->type) {
1502         case V4L2_EVENT_SOURCE_CHANGE:
1503                 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
1504         case V4L2_EVENT_CTRL:
1505                 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
1506         default:
1507                 return -EINVAL;
1508         }
1509 }
1510
1511 /* --------------- VIDEO OPS --------------- */
1512
1513 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status)
1514 {
1515         *status = 0;
1516         *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0;
1517         *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0;
1518
1519         v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status);
1520
1521         return 0;
1522 }
1523
1524 static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
1525                                  struct v4l2_dv_timings *timings)
1526 {
1527         struct tc358743_state *state = to_state(sd);
1528
1529         if (!timings)
1530                 return -EINVAL;
1531
1532         if (debug)
1533                 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ",
1534                                 timings, false);
1535
1536         if (v4l2_match_dv_timings(&state->timings, timings, 0, false)) {
1537                 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1538                 return 0;
1539         }
1540
1541         if (!v4l2_valid_dv_timings(timings,
1542                                 &tc358743_timings_cap, NULL, NULL)) {
1543                 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1544                 return -ERANGE;
1545         }
1546
1547         state->timings = *timings;
1548
1549         enable_stream(sd, false);
1550         tc358743_set_pll(sd);
1551         tc358743_set_csi(sd);
1552
1553         return 0;
1554 }
1555
1556 static int tc358743_g_dv_timings(struct v4l2_subdev *sd,
1557                                  struct v4l2_dv_timings *timings)
1558 {
1559         struct tc358743_state *state = to_state(sd);
1560
1561         *timings = state->timings;
1562
1563         return 0;
1564 }
1565
1566 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd,
1567                                     struct v4l2_enum_dv_timings *timings)
1568 {
1569         if (timings->pad != 0)
1570                 return -EINVAL;
1571
1572         return v4l2_enum_dv_timings_cap(timings,
1573                         &tc358743_timings_cap, NULL, NULL);
1574 }
1575
1576 static int tc358743_query_dv_timings(struct v4l2_subdev *sd,
1577                 struct v4l2_dv_timings *timings)
1578 {
1579         int ret;
1580
1581         ret = tc358743_get_detected_timings(sd, timings);
1582         if (ret)
1583                 return ret;
1584
1585         if (debug)
1586                 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ",
1587                                 timings, false);
1588
1589         if (!v4l2_valid_dv_timings(timings,
1590                                 &tc358743_timings_cap, NULL, NULL)) {
1591                 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);
1592                 return -ERANGE;
1593         }
1594
1595         return 0;
1596 }
1597
1598 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd,
1599                 struct v4l2_dv_timings_cap *cap)
1600 {
1601         if (cap->pad != 0)
1602                 return -EINVAL;
1603
1604         *cap = tc358743_timings_cap;
1605
1606         return 0;
1607 }
1608
1609 static int tc358743_get_mbus_config(struct v4l2_subdev *sd,
1610                                     unsigned int pad,
1611                                     struct v4l2_mbus_config *cfg)
1612 {
1613         struct tc358743_state *state = to_state(sd);
1614
1615         cfg->type = V4L2_MBUS_CSI2_DPHY;
1616
1617         /* Support for non-continuous CSI-2 clock is missing in the driver */
1618         cfg->bus.mipi_csi2.flags = 0;
1619         cfg->bus.mipi_csi2.num_data_lanes = state->csi_lanes_in_use;
1620
1621         return 0;
1622 }
1623
1624 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable)
1625 {
1626         enable_stream(sd, enable);
1627         if (!enable) {
1628                 /* Put all lanes in LP-11 state (STOPSTATE) */
1629                 tc358743_set_csi(sd);
1630         }
1631
1632         return 0;
1633 }
1634
1635 /* --------------- PAD OPS --------------- */
1636
1637 static int tc358743_enum_mbus_code(struct v4l2_subdev *sd,
1638                 struct v4l2_subdev_state *sd_state,
1639                 struct v4l2_subdev_mbus_code_enum *code)
1640 {
1641         switch (code->index) {
1642         case 0:
1643                 code->code = MEDIA_BUS_FMT_RGB888_1X24;
1644                 break;
1645         case 1:
1646                 code->code = MEDIA_BUS_FMT_UYVY8_1X16;
1647                 break;
1648         default:
1649                 return -EINVAL;
1650         }
1651         return 0;
1652 }
1653
1654 static int tc358743_get_fmt(struct v4l2_subdev *sd,
1655                 struct v4l2_subdev_state *sd_state,
1656                 struct v4l2_subdev_format *format)
1657 {
1658         struct tc358743_state *state = to_state(sd);
1659         u8 vi_rep = i2c_rd8(sd, VI_REP);
1660
1661         if (format->pad != 0)
1662                 return -EINVAL;
1663
1664         format->format.code = state->mbus_fmt_code;
1665         format->format.width = state->timings.bt.width;
1666         format->format.height = state->timings.bt.height;
1667         format->format.field = V4L2_FIELD_NONE;
1668
1669         switch (vi_rep & MASK_VOUT_COLOR_SEL) {
1670         case MASK_VOUT_COLOR_RGB_FULL:
1671         case MASK_VOUT_COLOR_RGB_LIMITED:
1672                 format->format.colorspace = V4L2_COLORSPACE_SRGB;
1673                 break;
1674         case MASK_VOUT_COLOR_601_YCBCR_LIMITED:
1675         case MASK_VOUT_COLOR_601_YCBCR_FULL:
1676                 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M;
1677                 break;
1678         case MASK_VOUT_COLOR_709_YCBCR_FULL:
1679         case MASK_VOUT_COLOR_709_YCBCR_LIMITED:
1680                 format->format.colorspace = V4L2_COLORSPACE_REC709;
1681                 break;
1682         default:
1683                 format->format.colorspace = 0;
1684                 break;
1685         }
1686
1687         return 0;
1688 }
1689
1690 static int tc358743_set_fmt(struct v4l2_subdev *sd,
1691                 struct v4l2_subdev_state *sd_state,
1692                 struct v4l2_subdev_format *format)
1693 {
1694         struct tc358743_state *state = to_state(sd);
1695
1696         u32 code = format->format.code; /* is overwritten by get_fmt */
1697         int ret = tc358743_get_fmt(sd, sd_state, format);
1698
1699         format->format.code = code;
1700
1701         if (ret)
1702                 return ret;
1703
1704         switch (code) {
1705         case MEDIA_BUS_FMT_RGB888_1X24:
1706         case MEDIA_BUS_FMT_UYVY8_1X16:
1707                 break;
1708         default:
1709                 return -EINVAL;
1710         }
1711
1712         if (format->which == V4L2_SUBDEV_FORMAT_TRY)
1713                 return 0;
1714
1715         state->mbus_fmt_code = format->format.code;
1716
1717         enable_stream(sd, false);
1718         tc358743_set_pll(sd);
1719         tc358743_set_csi(sd);
1720         tc358743_set_csi_color_space(sd);
1721
1722         return 0;
1723 }
1724
1725 static int tc358743_g_edid(struct v4l2_subdev *sd,
1726                 struct v4l2_subdev_edid *edid)
1727 {
1728         struct tc358743_state *state = to_state(sd);
1729
1730         memset(edid->reserved, 0, sizeof(edid->reserved));
1731
1732         if (edid->pad != 0)
1733                 return -EINVAL;
1734
1735         if (edid->start_block == 0 && edid->blocks == 0) {
1736                 edid->blocks = state->edid_blocks_written;
1737                 return 0;
1738         }
1739
1740         if (state->edid_blocks_written == 0)
1741                 return -ENODATA;
1742
1743         if (edid->start_block >= state->edid_blocks_written ||
1744                         edid->blocks == 0)
1745                 return -EINVAL;
1746
1747         if (edid->start_block + edid->blocks > state->edid_blocks_written)
1748                 edid->blocks = state->edid_blocks_written - edid->start_block;
1749
1750         i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid,
1751                         edid->blocks * EDID_BLOCK_SIZE);
1752
1753         return 0;
1754 }
1755
1756 static int tc358743_s_edid(struct v4l2_subdev *sd,
1757                                 struct v4l2_subdev_edid *edid)
1758 {
1759         struct tc358743_state *state = to_state(sd);
1760         u16 edid_len = edid->blocks * EDID_BLOCK_SIZE;
1761         u16 pa;
1762         int err;
1763         int i;
1764
1765         v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n",
1766                  __func__, edid->pad, edid->start_block, edid->blocks);
1767
1768         memset(edid->reserved, 0, sizeof(edid->reserved));
1769
1770         if (edid->pad != 0)
1771                 return -EINVAL;
1772
1773         if (edid->start_block != 0)
1774                 return -EINVAL;
1775
1776         if (edid->blocks > EDID_NUM_BLOCKS_MAX) {
1777                 edid->blocks = EDID_NUM_BLOCKS_MAX;
1778                 return -E2BIG;
1779         }
1780         pa = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL);
1781         err = v4l2_phys_addr_validate(pa, &pa, NULL);
1782         if (err)
1783                 return err;
1784
1785         cec_phys_addr_invalidate(state->cec_adap);
1786
1787         tc358743_disable_edid(sd);
1788
1789         i2c_wr8(sd, EDID_LEN1, edid_len & 0xff);
1790         i2c_wr8(sd, EDID_LEN2, edid_len >> 8);
1791
1792         if (edid->blocks == 0) {
1793                 state->edid_blocks_written = 0;
1794                 return 0;
1795         }
1796
1797         for (i = 0; i < edid_len; i += EDID_BLOCK_SIZE)
1798                 i2c_wr(sd, EDID_RAM + i, edid->edid + i, EDID_BLOCK_SIZE);
1799
1800         state->edid_blocks_written = edid->blocks;
1801
1802         cec_s_phys_addr(state->cec_adap, pa, false);
1803
1804         if (tx_5v_power_present(sd))
1805                 tc358743_enable_edid(sd);
1806
1807         return 0;
1808 }
1809
1810 /* -------------------------------------------------------------------------- */
1811
1812 static const struct v4l2_subdev_core_ops tc358743_core_ops = {
1813         .log_status = tc358743_log_status,
1814 #ifdef CONFIG_VIDEO_ADV_DEBUG
1815         .g_register = tc358743_g_register,
1816         .s_register = tc358743_s_register,
1817 #endif
1818         .interrupt_service_routine = tc358743_isr,
1819         .subscribe_event = tc358743_subscribe_event,
1820         .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1821 };
1822
1823 static const struct v4l2_subdev_video_ops tc358743_video_ops = {
1824         .g_input_status = tc358743_g_input_status,
1825         .s_dv_timings = tc358743_s_dv_timings,
1826         .g_dv_timings = tc358743_g_dv_timings,
1827         .query_dv_timings = tc358743_query_dv_timings,
1828         .s_stream = tc358743_s_stream,
1829 };
1830
1831 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = {
1832         .enum_mbus_code = tc358743_enum_mbus_code,
1833         .set_fmt = tc358743_set_fmt,
1834         .get_fmt = tc358743_get_fmt,
1835         .get_edid = tc358743_g_edid,
1836         .set_edid = tc358743_s_edid,
1837         .enum_dv_timings = tc358743_enum_dv_timings,
1838         .dv_timings_cap = tc358743_dv_timings_cap,
1839         .get_mbus_config = tc358743_get_mbus_config,
1840 };
1841
1842 static const struct v4l2_subdev_ops tc358743_ops = {
1843         .core = &tc358743_core_ops,
1844         .video = &tc358743_video_ops,
1845         .pad = &tc358743_pad_ops,
1846 };
1847
1848 /* --------------- CUSTOM CTRLS --------------- */
1849
1850 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = {
1851         .id = TC358743_CID_AUDIO_SAMPLING_RATE,
1852         .name = "Audio sampling rate",
1853         .type = V4L2_CTRL_TYPE_INTEGER,
1854         .min = 0,
1855         .max = 768000,
1856         .step = 1,
1857         .def = 0,
1858         .flags = V4L2_CTRL_FLAG_READ_ONLY,
1859 };
1860
1861 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = {
1862         .id = TC358743_CID_AUDIO_PRESENT,
1863         .name = "Audio present",
1864         .type = V4L2_CTRL_TYPE_BOOLEAN,
1865         .min = 0,
1866         .max = 1,
1867         .step = 1,
1868         .def = 0,
1869         .flags = V4L2_CTRL_FLAG_READ_ONLY,
1870 };
1871
1872 /* --------------- PROBE / REMOVE --------------- */
1873
1874 #ifdef CONFIG_OF
1875 static void tc358743_gpio_reset(struct tc358743_state *state)
1876 {
1877         usleep_range(5000, 10000);
1878         gpiod_set_value(state->reset_gpio, 1);
1879         usleep_range(1000, 2000);
1880         gpiod_set_value(state->reset_gpio, 0);
1881         msleep(20);
1882 }
1883
1884 static int tc358743_probe_of(struct tc358743_state *state)
1885 {
1886         struct device *dev = &state->i2c_client->dev;
1887         struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
1888         struct device_node *ep;
1889         struct clk *refclk;
1890         u32 bps_pr_lane;
1891         int ret;
1892
1893         refclk = devm_clk_get(dev, "refclk");
1894         if (IS_ERR(refclk))
1895                 return dev_err_probe(dev, PTR_ERR(refclk),
1896                                      "failed to get refclk\n");
1897
1898         ep = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
1899         if (!ep) {
1900                 dev_err(dev, "missing endpoint node\n");
1901                 return -EINVAL;
1902         }
1903
1904         ret = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep), &endpoint);
1905         if (ret) {
1906                 dev_err(dev, "failed to parse endpoint\n");
1907                 goto put_node;
1908         }
1909
1910         if (endpoint.bus_type != V4L2_MBUS_CSI2_DPHY ||
1911             endpoint.bus.mipi_csi2.num_data_lanes == 0 ||
1912             endpoint.nr_of_link_frequencies == 0) {
1913                 dev_err(dev, "missing CSI-2 properties in endpoint\n");
1914                 ret = -EINVAL;
1915                 goto free_endpoint;
1916         }
1917
1918         if (endpoint.bus.mipi_csi2.num_data_lanes > 4) {
1919                 dev_err(dev, "invalid number of lanes\n");
1920                 ret = -EINVAL;
1921                 goto free_endpoint;
1922         }
1923
1924         state->bus = endpoint.bus.mipi_csi2;
1925
1926         ret = clk_prepare_enable(refclk);
1927         if (ret) {
1928                 dev_err(dev, "Failed! to enable clock\n");
1929                 goto free_endpoint;
1930         }
1931
1932         state->pdata.refclk_hz = clk_get_rate(refclk);
1933         state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS;
1934         state->pdata.enable_hdcp = false;
1935         /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */
1936         state->pdata.fifo_level = 16;
1937         /*
1938          * The PLL input clock is obtained by dividing refclk by pll_prd.
1939          * It must be between 6 MHz and 40 MHz, lower frequency is better.
1940          */
1941         switch (state->pdata.refclk_hz) {
1942         case 26000000:
1943         case 27000000:
1944         case 42000000:
1945                 state->pdata.pll_prd = state->pdata.refclk_hz / 6000000;
1946                 break;
1947         default:
1948                 dev_err(dev, "unsupported refclk rate: %u Hz\n",
1949                         state->pdata.refclk_hz);
1950                 goto disable_clk;
1951         }
1952
1953         /*
1954          * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps.
1955          * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60.
1956          */
1957         bps_pr_lane = 2 * endpoint.link_frequencies[0];
1958         if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) {
1959                 dev_err(dev, "unsupported bps per lane: %u bps\n", bps_pr_lane);
1960                 ret = -EINVAL;
1961                 goto disable_clk;
1962         }
1963
1964         /* The CSI speed per lane is refclk / pll_prd * pll_fbd */
1965         state->pdata.pll_fbd = bps_pr_lane /
1966                                state->pdata.refclk_hz * state->pdata.pll_prd;
1967
1968         /*
1969          * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz
1970          * link frequency). In principle it should be possible to calculate
1971          * them based on link frequency and resolution.
1972          */
1973         if (bps_pr_lane != 594000000U)
1974                 dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane);
1975         state->pdata.lineinitcnt = 0xe80;
1976         state->pdata.lptxtimecnt = 0x003;
1977         /* tclk-preparecnt: 3, tclk-zerocnt: 20 */
1978         state->pdata.tclk_headercnt = 0x1403;
1979         state->pdata.tclk_trailcnt = 0x00;
1980         /* ths-preparecnt: 3, ths-zerocnt: 1 */
1981         state->pdata.ths_headercnt = 0x0103;
1982         state->pdata.twakeup = 0x4882;
1983         state->pdata.tclk_postcnt = 0x008;
1984         state->pdata.ths_trailcnt = 0x2;
1985         state->pdata.hstxvregcnt = 0;
1986
1987         state->reset_gpio = devm_gpiod_get_optional(dev, "reset",
1988                                                     GPIOD_OUT_LOW);
1989         if (IS_ERR(state->reset_gpio)) {
1990                 dev_err(dev, "failed to get reset gpio\n");
1991                 ret = PTR_ERR(state->reset_gpio);
1992                 goto disable_clk;
1993         }
1994
1995         if (state->reset_gpio)
1996                 tc358743_gpio_reset(state);
1997
1998         ret = 0;
1999         goto free_endpoint;
2000
2001 disable_clk:
2002         clk_disable_unprepare(refclk);
2003 free_endpoint:
2004         v4l2_fwnode_endpoint_free(&endpoint);
2005 put_node:
2006         of_node_put(ep);
2007         return ret;
2008 }
2009 #else
2010 static inline int tc358743_probe_of(struct tc358743_state *state)
2011 {
2012         return -ENODEV;
2013 }
2014 #endif
2015
2016 static int tc358743_probe(struct i2c_client *client)
2017 {
2018         static struct v4l2_dv_timings default_timing =
2019                 V4L2_DV_BT_CEA_640X480P59_94;
2020         struct tc358743_state *state;
2021         struct tc358743_platform_data *pdata = client->dev.platform_data;
2022         struct v4l2_subdev *sd;
2023         u16 irq_mask = MASK_HDMI_MSK | MASK_CSI_MSK;
2024         int err;
2025
2026         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2027                 return -EIO;
2028         v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n",
2029                 client->addr << 1, client->adapter->name);
2030
2031         state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state),
2032                         GFP_KERNEL);
2033         if (!state)
2034                 return -ENOMEM;
2035
2036         state->i2c_client = client;
2037
2038         /* platform data */
2039         if (pdata) {
2040                 state->pdata = *pdata;
2041                 state->bus.flags = 0;
2042         } else {
2043                 err = tc358743_probe_of(state);
2044                 if (err == -ENODEV)
2045                         v4l_err(client, "No platform data!\n");
2046                 if (err)
2047                         return err;
2048         }
2049
2050         sd = &state->sd;
2051         v4l2_i2c_subdev_init(sd, client, &tc358743_ops);
2052         sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
2053
2054         /* i2c access */
2055         if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) {
2056                 v4l2_info(sd, "not a TC358743 on address 0x%x\n",
2057                           client->addr << 1);
2058                 return -ENODEV;
2059         }
2060
2061         /* control handlers */
2062         v4l2_ctrl_handler_init(&state->hdl, 3);
2063
2064         state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL,
2065                         V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0);
2066
2067         /* custom controls */
2068         state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2069                         &tc358743_ctrl_audio_sampling_rate, NULL);
2070
2071         state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
2072                         &tc358743_ctrl_audio_present, NULL);
2073
2074         sd->ctrl_handler = &state->hdl;
2075         if (state->hdl.error) {
2076                 err = state->hdl.error;
2077                 goto err_hdl;
2078         }
2079
2080         if (tc358743_update_controls(sd)) {
2081                 err = -ENODEV;
2082                 goto err_hdl;
2083         }
2084
2085         state->pad.flags = MEDIA_PAD_FL_SOURCE;
2086         sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
2087         err = media_entity_pads_init(&sd->entity, 1, &state->pad);
2088         if (err < 0)
2089                 goto err_hdl;
2090
2091         state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
2092
2093         sd->dev = &client->dev;
2094
2095         mutex_init(&state->confctl_mutex);
2096
2097         INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
2098                         tc358743_delayed_work_enable_hotplug);
2099
2100 #ifdef CONFIG_VIDEO_TC358743_CEC
2101         state->cec_adap = cec_allocate_adapter(&tc358743_cec_adap_ops,
2102                 state, dev_name(&client->dev),
2103                 CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, CEC_MAX_LOG_ADDRS);
2104         if (IS_ERR(state->cec_adap)) {
2105                 err = PTR_ERR(state->cec_adap);
2106                 goto err_hdl;
2107         }
2108         irq_mask |= MASK_CEC_RMSK | MASK_CEC_TMSK;
2109 #endif
2110
2111         tc358743_initial_setup(sd);
2112
2113         tc358743_s_dv_timings(sd, &default_timing);
2114
2115         tc358743_set_csi_color_space(sd);
2116
2117         tc358743_init_interrupts(sd);
2118
2119         if (state->i2c_client->irq) {
2120                 err = devm_request_threaded_irq(&client->dev,
2121                                                 state->i2c_client->irq,
2122                                                 NULL, tc358743_irq_handler,
2123                                                 IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
2124                                                 "tc358743", state);
2125                 if (err)
2126                         goto err_work_queues;
2127         } else {
2128                 INIT_WORK(&state->work_i2c_poll,
2129                           tc358743_work_i2c_poll);
2130                 timer_setup(&state->timer, tc358743_irq_poll_timer, 0);
2131                 state->timer.expires = jiffies +
2132                                        msecs_to_jiffies(POLL_INTERVAL_MS);
2133                 add_timer(&state->timer);
2134         }
2135
2136         err = cec_register_adapter(state->cec_adap, &client->dev);
2137         if (err < 0) {
2138                 pr_err("%s: failed to register the cec device\n", __func__);
2139                 cec_delete_adapter(state->cec_adap);
2140                 state->cec_adap = NULL;
2141                 goto err_work_queues;
2142         }
2143
2144         tc358743_enable_interrupts(sd, tx_5v_power_present(sd));
2145         i2c_wr16(sd, INTMASK, ~irq_mask);
2146
2147         err = v4l2_ctrl_handler_setup(sd->ctrl_handler);
2148         if (err)
2149                 goto err_work_queues;
2150
2151         err = v4l2_async_register_subdev(sd);
2152         if (err < 0)
2153                 goto err_work_queues;
2154
2155         v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
2156                   client->addr << 1, client->adapter->name);
2157
2158         return 0;
2159
2160 err_work_queues:
2161         cec_unregister_adapter(state->cec_adap);
2162         if (!state->i2c_client->irq)
2163                 flush_work(&state->work_i2c_poll);
2164         cancel_delayed_work(&state->delayed_work_enable_hotplug);
2165         mutex_destroy(&state->confctl_mutex);
2166 err_hdl:
2167         media_entity_cleanup(&sd->entity);
2168         v4l2_ctrl_handler_free(&state->hdl);
2169         return err;
2170 }
2171
2172 static void tc358743_remove(struct i2c_client *client)
2173 {
2174         struct v4l2_subdev *sd = i2c_get_clientdata(client);
2175         struct tc358743_state *state = to_state(sd);
2176
2177         if (!state->i2c_client->irq) {
2178                 del_timer_sync(&state->timer);
2179                 flush_work(&state->work_i2c_poll);
2180         }
2181         cancel_delayed_work_sync(&state->delayed_work_enable_hotplug);
2182         cec_unregister_adapter(state->cec_adap);
2183         v4l2_async_unregister_subdev(sd);
2184         v4l2_device_unregister_subdev(sd);
2185         mutex_destroy(&state->confctl_mutex);
2186         media_entity_cleanup(&sd->entity);
2187         v4l2_ctrl_handler_free(&state->hdl);
2188 }
2189
2190 static const struct i2c_device_id tc358743_id[] = {
2191         {"tc358743", 0},
2192         {}
2193 };
2194
2195 MODULE_DEVICE_TABLE(i2c, tc358743_id);
2196
2197 #if IS_ENABLED(CONFIG_OF)
2198 static const struct of_device_id tc358743_of_match[] = {
2199         { .compatible = "toshiba,tc358743" },
2200         {},
2201 };
2202 MODULE_DEVICE_TABLE(of, tc358743_of_match);
2203 #endif
2204
2205 static struct i2c_driver tc358743_driver = {
2206         .driver = {
2207                 .name = "tc358743",
2208                 .of_match_table = of_match_ptr(tc358743_of_match),
2209         },
2210         .probe = tc358743_probe,
2211         .remove = tc358743_remove,
2212         .id_table = tc358743_id,
2213 };
2214
2215 module_i2c_driver(tc358743_driver);