1 /* 2 * tc358743 - Toshiba HDMI to CSI-2 bridge 3 * 4 * Copyright 2015 Cisco Systems, Inc. and/or its affiliates. All rights 5 * reserved. 6 * 7 * This program is free software; you may redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 12 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 13 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 15 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 16 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 17 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 18 * SOFTWARE. 19 * 20 */ 21 22 /* 23 * References (c = chapter, p = page): 24 * REF_01 - Toshiba, TC358743XBG (H2C), Functional Specification, Rev 0.60 25 * REF_02 - Toshiba, TC358743XBG_HDMI-CSI_Tv11p_nm.xls 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/module.h> 30 #include <linux/slab.h> 31 #include <linux/i2c.h> 32 #include <linux/clk.h> 33 #include <linux/delay.h> 34 #include <linux/gpio/consumer.h> 35 #include <linux/interrupt.h> 36 #include <linux/videodev2.h> 37 #include <linux/workqueue.h> 38 #include <linux/v4l2-dv-timings.h> 39 #include <linux/hdmi.h> 40 #include <media/v4l2-dv-timings.h> 41 #include <media/v4l2-device.h> 42 #include <media/v4l2-ctrls.h> 43 #include <media/v4l2-event.h> 44 #include <media/v4l2-of.h> 45 #include <media/tc358743.h> 46 47 #include "tc358743_regs.h" 48 49 static int debug; 50 module_param(debug, int, 0644); 51 MODULE_PARM_DESC(debug, "debug level (0-3)"); 52 53 MODULE_DESCRIPTION("Toshiba TC358743 HDMI to CSI-2 bridge driver"); 54 MODULE_AUTHOR("Ramakrishnan Muthukrishnan <ram@rkrishnan.org>"); 55 MODULE_AUTHOR("Mikhail Khelik <mkhelik@cisco.com>"); 56 MODULE_AUTHOR("Mats Randgaard <matrandg@cisco.com>"); 57 MODULE_LICENSE("GPL"); 58 59 #define EDID_NUM_BLOCKS_MAX 8 60 #define EDID_BLOCK_SIZE 128 61 62 /* Max transfer size done by I2C transfer functions */ 63 #define MAX_XFER_SIZE (EDID_NUM_BLOCKS_MAX * EDID_BLOCK_SIZE + 2) 64 65 static const struct v4l2_dv_timings_cap tc358743_timings_cap = { 66 .type = V4L2_DV_BT_656_1120, 67 /* keep this initialization for compatibility with GCC < 4.4.6 */ 68 .reserved = { 0 }, 69 /* Pixel clock from REF_01 p. 20. Min/max height/width are unknown */ 70 V4L2_INIT_BT_TIMINGS(1, 10000, 1, 10000, 0, 165000000, 71 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | 72 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, 73 V4L2_DV_BT_CAP_PROGRESSIVE | 74 V4L2_DV_BT_CAP_REDUCED_BLANKING | 75 V4L2_DV_BT_CAP_CUSTOM) 76 }; 77 78 struct tc358743_state { 79 struct tc358743_platform_data pdata; 80 struct v4l2_of_bus_mipi_csi2 bus; 81 struct v4l2_subdev sd; 82 struct media_pad pad; 83 struct v4l2_ctrl_handler hdl; 84 struct i2c_client *i2c_client; 85 /* CONFCTL is modified in ops and tc358743_hdmi_sys_int_handler */ 86 struct mutex confctl_mutex; 87 88 /* controls */ 89 struct v4l2_ctrl *detect_tx_5v_ctrl; 90 struct v4l2_ctrl *audio_sampling_rate_ctrl; 91 struct v4l2_ctrl *audio_present_ctrl; 92 93 /* work queues */ 94 struct workqueue_struct *work_queues; 95 struct delayed_work delayed_work_enable_hotplug; 96 97 /* edid */ 98 u8 edid_blocks_written; 99 100 /* used by i2c_wr() */ 101 u8 wr_data[MAX_XFER_SIZE]; 102 103 struct v4l2_dv_timings timings; 104 u32 mbus_fmt_code; 105 106 struct gpio_desc *reset_gpio; 107 }; 108 109 static void tc358743_enable_interrupts(struct v4l2_subdev *sd, 110 bool cable_connected); 111 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd); 112 113 static inline struct tc358743_state *to_state(struct v4l2_subdev *sd) 114 { 115 return container_of(sd, struct tc358743_state, sd); 116 } 117 118 /* --------------- I2C --------------- */ 119 120 static void i2c_rd(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) 121 { 122 struct tc358743_state *state = to_state(sd); 123 struct i2c_client *client = state->i2c_client; 124 int err; 125 u8 buf[2] = { reg >> 8, reg & 0xff }; 126 struct i2c_msg msgs[] = { 127 { 128 .addr = client->addr, 129 .flags = 0, 130 .len = 2, 131 .buf = buf, 132 }, 133 { 134 .addr = client->addr, 135 .flags = I2C_M_RD, 136 .len = n, 137 .buf = values, 138 }, 139 }; 140 141 err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); 142 if (err != ARRAY_SIZE(msgs)) { 143 v4l2_err(sd, "%s: reading register 0x%x from 0x%x failed\n", 144 __func__, reg, client->addr); 145 } 146 } 147 148 static void i2c_wr(struct v4l2_subdev *sd, u16 reg, u8 *values, u32 n) 149 { 150 struct tc358743_state *state = to_state(sd); 151 struct i2c_client *client = state->i2c_client; 152 u8 *data = state->wr_data; 153 int err, i; 154 struct i2c_msg msg; 155 156 if ((2 + n) > sizeof(state->wr_data)) 157 v4l2_warn(sd, "i2c wr reg=%04x: len=%d is too big!\n", 158 reg, 2 + n); 159 160 msg.addr = client->addr; 161 msg.buf = data; 162 msg.len = 2 + n; 163 msg.flags = 0; 164 165 data[0] = reg >> 8; 166 data[1] = reg & 0xff; 167 168 for (i = 0; i < n; i++) 169 data[2 + i] = values[i]; 170 171 err = i2c_transfer(client->adapter, &msg, 1); 172 if (err != 1) { 173 v4l2_err(sd, "%s: writing register 0x%x from 0x%x failed\n", 174 __func__, reg, client->addr); 175 return; 176 } 177 178 if (debug < 3) 179 return; 180 181 switch (n) { 182 case 1: 183 v4l2_info(sd, "I2C write 0x%04x = 0x%02x", 184 reg, data[2]); 185 break; 186 case 2: 187 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x", 188 reg, data[3], data[2]); 189 break; 190 case 4: 191 v4l2_info(sd, "I2C write 0x%04x = 0x%02x%02x%02x%02x", 192 reg, data[5], data[4], data[3], data[2]); 193 break; 194 default: 195 v4l2_info(sd, "I2C write %d bytes from address 0x%04x\n", 196 n, reg); 197 } 198 } 199 200 static u8 i2c_rd8(struct v4l2_subdev *sd, u16 reg) 201 { 202 u8 val; 203 204 i2c_rd(sd, reg, &val, 1); 205 206 return val; 207 } 208 209 static void i2c_wr8(struct v4l2_subdev *sd, u16 reg, u8 val) 210 { 211 i2c_wr(sd, reg, &val, 1); 212 } 213 214 static void i2c_wr8_and_or(struct v4l2_subdev *sd, u16 reg, 215 u8 mask, u8 val) 216 { 217 i2c_wr8(sd, reg, (i2c_rd8(sd, reg) & mask) | val); 218 } 219 220 static u16 i2c_rd16(struct v4l2_subdev *sd, u16 reg) 221 { 222 u16 val; 223 224 i2c_rd(sd, reg, (u8 *)&val, 2); 225 226 return val; 227 } 228 229 static void i2c_wr16(struct v4l2_subdev *sd, u16 reg, u16 val) 230 { 231 i2c_wr(sd, reg, (u8 *)&val, 2); 232 } 233 234 static void i2c_wr16_and_or(struct v4l2_subdev *sd, u16 reg, u16 mask, u16 val) 235 { 236 i2c_wr16(sd, reg, (i2c_rd16(sd, reg) & mask) | val); 237 } 238 239 static u32 i2c_rd32(struct v4l2_subdev *sd, u16 reg) 240 { 241 u32 val; 242 243 i2c_rd(sd, reg, (u8 *)&val, 4); 244 245 return val; 246 } 247 248 static void i2c_wr32(struct v4l2_subdev *sd, u16 reg, u32 val) 249 { 250 i2c_wr(sd, reg, (u8 *)&val, 4); 251 } 252 253 /* --------------- STATUS --------------- */ 254 255 static inline bool is_hdmi(struct v4l2_subdev *sd) 256 { 257 return i2c_rd8(sd, SYS_STATUS) & MASK_S_HDMI; 258 } 259 260 static inline bool tx_5v_power_present(struct v4l2_subdev *sd) 261 { 262 return i2c_rd8(sd, SYS_STATUS) & MASK_S_DDC5V; 263 } 264 265 static inline bool no_signal(struct v4l2_subdev *sd) 266 { 267 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_TMDS); 268 } 269 270 static inline bool no_sync(struct v4l2_subdev *sd) 271 { 272 return !(i2c_rd8(sd, SYS_STATUS) & MASK_S_SYNC); 273 } 274 275 static inline bool audio_present(struct v4l2_subdev *sd) 276 { 277 return i2c_rd8(sd, AU_STATUS0) & MASK_S_A_SAMPLE; 278 } 279 280 static int get_audio_sampling_rate(struct v4l2_subdev *sd) 281 { 282 static const int code_to_rate[] = { 283 44100, 0, 48000, 32000, 22050, 384000, 24000, 352800, 284 88200, 768000, 96000, 705600, 176400, 0, 192000, 0 285 }; 286 287 /* Register FS_SET is not cleared when the cable is disconnected */ 288 if (no_signal(sd)) 289 return 0; 290 291 return code_to_rate[i2c_rd8(sd, FS_SET) & MASK_FS]; 292 } 293 294 static unsigned tc358743_num_csi_lanes_in_use(struct v4l2_subdev *sd) 295 { 296 return ((i2c_rd32(sd, CSI_CONTROL) & MASK_NOL) >> 1) + 1; 297 } 298 299 /* --------------- TIMINGS --------------- */ 300 301 static inline unsigned fps(const struct v4l2_bt_timings *t) 302 { 303 if (!V4L2_DV_BT_FRAME_HEIGHT(t) || !V4L2_DV_BT_FRAME_WIDTH(t)) 304 return 0; 305 306 return DIV_ROUND_CLOSEST((unsigned)t->pixelclock, 307 V4L2_DV_BT_FRAME_HEIGHT(t) * V4L2_DV_BT_FRAME_WIDTH(t)); 308 } 309 310 static int tc358743_get_detected_timings(struct v4l2_subdev *sd, 311 struct v4l2_dv_timings *timings) 312 { 313 struct v4l2_bt_timings *bt = &timings->bt; 314 unsigned width, height, frame_width, frame_height, frame_interval, fps; 315 316 memset(timings, 0, sizeof(struct v4l2_dv_timings)); 317 318 if (no_signal(sd)) { 319 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__); 320 return -ENOLINK; 321 } 322 if (no_sync(sd)) { 323 v4l2_dbg(1, debug, sd, "%s: no sync on signal\n", __func__); 324 return -ENOLCK; 325 } 326 327 timings->type = V4L2_DV_BT_656_1120; 328 bt->interlaced = i2c_rd8(sd, VI_STATUS1) & MASK_S_V_INTERLACE ? 329 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE; 330 331 width = ((i2c_rd8(sd, DE_WIDTH_H_HI) & 0x1f) << 8) + 332 i2c_rd8(sd, DE_WIDTH_H_LO); 333 height = ((i2c_rd8(sd, DE_WIDTH_V_HI) & 0x1f) << 8) + 334 i2c_rd8(sd, DE_WIDTH_V_LO); 335 frame_width = ((i2c_rd8(sd, H_SIZE_HI) & 0x1f) << 8) + 336 i2c_rd8(sd, H_SIZE_LO); 337 frame_height = (((i2c_rd8(sd, V_SIZE_HI) & 0x3f) << 8) + 338 i2c_rd8(sd, V_SIZE_LO)) / 2; 339 /* frame interval in milliseconds * 10 340 * Require SYS_FREQ0 and SYS_FREQ1 are precisely set */ 341 frame_interval = ((i2c_rd8(sd, FV_CNT_HI) & 0x3) << 8) + 342 i2c_rd8(sd, FV_CNT_LO); 343 fps = (frame_interval > 0) ? 344 DIV_ROUND_CLOSEST(10000, frame_interval) : 0; 345 346 bt->width = width; 347 bt->height = height; 348 bt->vsync = frame_height - height; 349 bt->hsync = frame_width - width; 350 bt->pixelclock = frame_width * frame_height * fps; 351 if (bt->interlaced == V4L2_DV_INTERLACED) { 352 bt->height *= 2; 353 bt->il_vsync = bt->vsync + 1; 354 bt->pixelclock /= 2; 355 } 356 357 return 0; 358 } 359 360 /* --------------- HOTPLUG / HDCP / EDID --------------- */ 361 362 static void tc358743_delayed_work_enable_hotplug(struct work_struct *work) 363 { 364 struct delayed_work *dwork = to_delayed_work(work); 365 struct tc358743_state *state = container_of(dwork, 366 struct tc358743_state, delayed_work_enable_hotplug); 367 struct v4l2_subdev *sd = &state->sd; 368 369 v4l2_dbg(2, debug, sd, "%s:\n", __func__); 370 371 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, MASK_HPD_OUT0); 372 } 373 374 static void tc358743_set_hdmi_hdcp(struct v4l2_subdev *sd, bool enable) 375 { 376 v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? 377 "enable" : "disable"); 378 379 i2c_wr8_and_or(sd, HDCP_REG1, 380 ~(MASK_AUTH_UNAUTH_SEL | MASK_AUTH_UNAUTH), 381 MASK_AUTH_UNAUTH_SEL_16_FRAMES | MASK_AUTH_UNAUTH_AUTO); 382 383 i2c_wr8_and_or(sd, HDCP_REG2, ~MASK_AUTO_P3_RESET, 384 SET_AUTO_P3_RESET_FRAMES(0x0f)); 385 386 /* HDCP is disabled by configuring the receiver as HDCP repeater. The 387 * repeater mode require software support to work, so HDCP 388 * authentication will fail. 389 */ 390 i2c_wr8_and_or(sd, HDCP_REG3, ~KEY_RD_CMD, enable ? KEY_RD_CMD : 0); 391 i2c_wr8_and_or(sd, HDCP_MODE, ~(MASK_AUTO_CLR | MASK_MODE_RST_TN), 392 enable ? (MASK_AUTO_CLR | MASK_MODE_RST_TN) : 0); 393 394 /* Apple MacBook Pro gen.8 has a bug that makes it freeze every fifth 395 * second when HDCP is disabled, but the MAX_EXCED bit is handled 396 * correctly and HDCP is disabled on the HDMI output. 397 */ 398 i2c_wr8_and_or(sd, BSTATUS1, ~MASK_MAX_EXCED, 399 enable ? 0 : MASK_MAX_EXCED); 400 i2c_wr8_and_or(sd, BCAPS, ~(MASK_REPEATER | MASK_READY), 401 enable ? 0 : MASK_REPEATER | MASK_READY); 402 } 403 404 static void tc358743_disable_edid(struct v4l2_subdev *sd) 405 { 406 struct tc358743_state *state = to_state(sd); 407 408 v4l2_dbg(2, debug, sd, "%s:\n", __func__); 409 410 cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); 411 412 /* DDC access to EDID is also disabled when hotplug is disabled. See 413 * register DDC_CTL */ 414 i2c_wr8_and_or(sd, HPD_CTL, ~MASK_HPD_OUT0, 0x0); 415 } 416 417 static void tc358743_enable_edid(struct v4l2_subdev *sd) 418 { 419 struct tc358743_state *state = to_state(sd); 420 421 if (state->edid_blocks_written == 0) { 422 v4l2_dbg(2, debug, sd, "%s: no EDID -> no hotplug\n", __func__); 423 return; 424 } 425 426 v4l2_dbg(2, debug, sd, "%s:\n", __func__); 427 428 /* Enable hotplug after 100 ms. DDC access to EDID is also enabled when 429 * hotplug is enabled. See register DDC_CTL */ 430 queue_delayed_work(state->work_queues, 431 &state->delayed_work_enable_hotplug, HZ / 10); 432 433 tc358743_enable_interrupts(sd, true); 434 tc358743_s_ctrl_detect_tx_5v(sd); 435 } 436 437 static void tc358743_erase_bksv(struct v4l2_subdev *sd) 438 { 439 int i; 440 441 for (i = 0; i < 5; i++) 442 i2c_wr8(sd, BKSV + i, 0); 443 } 444 445 /* --------------- AVI infoframe --------------- */ 446 447 static void print_avi_infoframe(struct v4l2_subdev *sd) 448 { 449 struct i2c_client *client = v4l2_get_subdevdata(sd); 450 struct device *dev = &client->dev; 451 union hdmi_infoframe frame; 452 u8 buffer[HDMI_INFOFRAME_SIZE(AVI)]; 453 454 if (!is_hdmi(sd)) { 455 v4l2_info(sd, "DVI-D signal - AVI infoframe not supported\n"); 456 return; 457 } 458 459 i2c_rd(sd, PK_AVI_0HEAD, buffer, HDMI_INFOFRAME_SIZE(AVI)); 460 461 if (hdmi_infoframe_unpack(&frame, buffer) < 0) { 462 v4l2_err(sd, "%s: unpack of AVI infoframe failed\n", __func__); 463 return; 464 } 465 466 hdmi_infoframe_log(KERN_INFO, dev, &frame); 467 } 468 469 /* --------------- CTRLS --------------- */ 470 471 static int tc358743_s_ctrl_detect_tx_5v(struct v4l2_subdev *sd) 472 { 473 struct tc358743_state *state = to_state(sd); 474 475 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, 476 tx_5v_power_present(sd)); 477 } 478 479 static int tc358743_s_ctrl_audio_sampling_rate(struct v4l2_subdev *sd) 480 { 481 struct tc358743_state *state = to_state(sd); 482 483 return v4l2_ctrl_s_ctrl(state->audio_sampling_rate_ctrl, 484 get_audio_sampling_rate(sd)); 485 } 486 487 static int tc358743_s_ctrl_audio_present(struct v4l2_subdev *sd) 488 { 489 struct tc358743_state *state = to_state(sd); 490 491 return v4l2_ctrl_s_ctrl(state->audio_present_ctrl, 492 audio_present(sd)); 493 } 494 495 static int tc358743_update_controls(struct v4l2_subdev *sd) 496 { 497 int ret = 0; 498 499 ret |= tc358743_s_ctrl_detect_tx_5v(sd); 500 ret |= tc358743_s_ctrl_audio_sampling_rate(sd); 501 ret |= tc358743_s_ctrl_audio_present(sd); 502 503 return ret; 504 } 505 506 /* --------------- INIT --------------- */ 507 508 static void tc358743_reset_phy(struct v4l2_subdev *sd) 509 { 510 v4l2_dbg(1, debug, sd, "%s:\n", __func__); 511 512 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, 0); 513 i2c_wr8_and_or(sd, PHY_RST, ~MASK_RESET_CTRL, MASK_RESET_CTRL); 514 } 515 516 static void tc358743_reset(struct v4l2_subdev *sd, uint16_t mask) 517 { 518 u16 sysctl = i2c_rd16(sd, SYSCTL); 519 520 i2c_wr16(sd, SYSCTL, sysctl | mask); 521 i2c_wr16(sd, SYSCTL, sysctl & ~mask); 522 } 523 524 static inline void tc358743_sleep_mode(struct v4l2_subdev *sd, bool enable) 525 { 526 i2c_wr16_and_or(sd, SYSCTL, ~MASK_SLEEP, 527 enable ? MASK_SLEEP : 0); 528 } 529 530 static inline void enable_stream(struct v4l2_subdev *sd, bool enable) 531 { 532 struct tc358743_state *state = to_state(sd); 533 534 v4l2_dbg(3, debug, sd, "%s: %sable\n", 535 __func__, enable ? "en" : "dis"); 536 537 if (enable) { 538 /* It is critical for CSI receiver to see lane transition 539 * LP11->HS. Set to non-continuous mode to enable clock lane 540 * LP11 state. */ 541 i2c_wr32(sd, TXOPTIONCNTRL, 0); 542 /* Set to continuous mode to trigger LP11->HS transition */ 543 i2c_wr32(sd, TXOPTIONCNTRL, MASK_CONTCLKMODE); 544 /* Unmute video */ 545 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE); 546 } else { 547 /* Mute video so that all data lanes go to LSP11 state. 548 * No data is output to CSI Tx block. */ 549 i2c_wr8(sd, VI_MUTE, MASK_AUTO_MUTE | MASK_VI_MUTE); 550 } 551 552 mutex_lock(&state->confctl_mutex); 553 i2c_wr16_and_or(sd, CONFCTL, ~(MASK_VBUFEN | MASK_ABUFEN), 554 enable ? (MASK_VBUFEN | MASK_ABUFEN) : 0x0); 555 mutex_unlock(&state->confctl_mutex); 556 } 557 558 static void tc358743_set_pll(struct v4l2_subdev *sd) 559 { 560 struct tc358743_state *state = to_state(sd); 561 struct tc358743_platform_data *pdata = &state->pdata; 562 u16 pllctl0 = i2c_rd16(sd, PLLCTL0); 563 u16 pllctl1 = i2c_rd16(sd, PLLCTL1); 564 u16 pllctl0_new = SET_PLL_PRD(pdata->pll_prd) | 565 SET_PLL_FBD(pdata->pll_fbd); 566 u32 hsck = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd; 567 568 v4l2_dbg(2, debug, sd, "%s:\n", __func__); 569 570 /* Only rewrite when needed (new value or disabled), since rewriting 571 * triggers another format change event. */ 572 if ((pllctl0 != pllctl0_new) || ((pllctl1 & MASK_PLL_EN) == 0)) { 573 u16 pll_frs; 574 575 if (hsck > 500000000) 576 pll_frs = 0x0; 577 else if (hsck > 250000000) 578 pll_frs = 0x1; 579 else if (hsck > 125000000) 580 pll_frs = 0x2; 581 else 582 pll_frs = 0x3; 583 584 v4l2_dbg(1, debug, sd, "%s: updating PLL clock\n", __func__); 585 tc358743_sleep_mode(sd, true); 586 i2c_wr16(sd, PLLCTL0, pllctl0_new); 587 i2c_wr16_and_or(sd, PLLCTL1, 588 ~(MASK_PLL_FRS | MASK_RESETB | MASK_PLL_EN), 589 (SET_PLL_FRS(pll_frs) | MASK_RESETB | 590 MASK_PLL_EN)); 591 udelay(10); /* REF_02, Sheet "Source HDMI" */ 592 i2c_wr16_and_or(sd, PLLCTL1, ~MASK_CKEN, MASK_CKEN); 593 tc358743_sleep_mode(sd, false); 594 } 595 } 596 597 static void tc358743_set_ref_clk(struct v4l2_subdev *sd) 598 { 599 struct tc358743_state *state = to_state(sd); 600 struct tc358743_platform_data *pdata = &state->pdata; 601 u32 sys_freq; 602 u32 lockdet_ref; 603 u16 fh_min; 604 u16 fh_max; 605 606 BUG_ON(!(pdata->refclk_hz == 26000000 || 607 pdata->refclk_hz == 27000000 || 608 pdata->refclk_hz == 42000000)); 609 610 sys_freq = pdata->refclk_hz / 10000; 611 i2c_wr8(sd, SYS_FREQ0, sys_freq & 0x00ff); 612 i2c_wr8(sd, SYS_FREQ1, (sys_freq & 0xff00) >> 8); 613 614 i2c_wr8_and_or(sd, PHY_CTL0, ~MASK_PHY_SYSCLK_IND, 615 (pdata->refclk_hz == 42000000) ? 616 MASK_PHY_SYSCLK_IND : 0x0); 617 618 fh_min = pdata->refclk_hz / 100000; 619 i2c_wr8(sd, FH_MIN0, fh_min & 0x00ff); 620 i2c_wr8(sd, FH_MIN1, (fh_min & 0xff00) >> 8); 621 622 fh_max = (fh_min * 66) / 10; 623 i2c_wr8(sd, FH_MAX0, fh_max & 0x00ff); 624 i2c_wr8(sd, FH_MAX1, (fh_max & 0xff00) >> 8); 625 626 lockdet_ref = pdata->refclk_hz / 100; 627 i2c_wr8(sd, LOCKDET_REF0, lockdet_ref & 0x0000ff); 628 i2c_wr8(sd, LOCKDET_REF1, (lockdet_ref & 0x00ff00) >> 8); 629 i2c_wr8(sd, LOCKDET_REF2, (lockdet_ref & 0x0f0000) >> 16); 630 631 i2c_wr8_and_or(sd, NCO_F0_MOD, ~MASK_NCO_F0_MOD, 632 (pdata->refclk_hz == 27000000) ? 633 MASK_NCO_F0_MOD_27MHZ : 0x0); 634 } 635 636 static void tc358743_set_csi_color_space(struct v4l2_subdev *sd) 637 { 638 struct tc358743_state *state = to_state(sd); 639 640 switch (state->mbus_fmt_code) { 641 case MEDIA_BUS_FMT_UYVY8_1X16: 642 v4l2_dbg(2, debug, sd, "%s: YCbCr 422 16-bit\n", __func__); 643 i2c_wr8_and_or(sd, VOUT_SET2, 644 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff, 645 MASK_SEL422 | MASK_VOUT_422FIL_100); 646 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff, 647 MASK_VOUT_COLOR_601_YCBCR_LIMITED); 648 mutex_lock(&state->confctl_mutex); 649 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 650 MASK_YCBCRFMT_422_8_BIT); 651 mutex_unlock(&state->confctl_mutex); 652 break; 653 case MEDIA_BUS_FMT_RGB888_1X24: 654 v4l2_dbg(2, debug, sd, "%s: RGB 888 24-bit\n", __func__); 655 i2c_wr8_and_or(sd, VOUT_SET2, 656 ~(MASK_SEL422 | MASK_VOUT_422FIL_100) & 0xff, 657 0x00); 658 i2c_wr8_and_or(sd, VI_REP, ~MASK_VOUT_COLOR_SEL & 0xff, 659 MASK_VOUT_COLOR_RGB_FULL); 660 mutex_lock(&state->confctl_mutex); 661 i2c_wr16_and_or(sd, CONFCTL, ~MASK_YCBCRFMT, 0); 662 mutex_unlock(&state->confctl_mutex); 663 break; 664 default: 665 v4l2_dbg(2, debug, sd, "%s: Unsupported format code 0x%x\n", 666 __func__, state->mbus_fmt_code); 667 } 668 } 669 670 static unsigned tc358743_num_csi_lanes_needed(struct v4l2_subdev *sd) 671 { 672 struct tc358743_state *state = to_state(sd); 673 struct v4l2_bt_timings *bt = &state->timings.bt; 674 struct tc358743_platform_data *pdata = &state->pdata; 675 u32 bits_pr_pixel = 676 (state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16) ? 16 : 24; 677 u32 bps = bt->width * bt->height * fps(bt) * bits_pr_pixel; 678 u32 bps_pr_lane = (pdata->refclk_hz / pdata->pll_prd) * pdata->pll_fbd; 679 680 return DIV_ROUND_UP(bps, bps_pr_lane); 681 } 682 683 static void tc358743_set_csi(struct v4l2_subdev *sd) 684 { 685 struct tc358743_state *state = to_state(sd); 686 struct tc358743_platform_data *pdata = &state->pdata; 687 unsigned lanes = tc358743_num_csi_lanes_needed(sd); 688 689 v4l2_dbg(3, debug, sd, "%s:\n", __func__); 690 691 tc358743_reset(sd, MASK_CTXRST); 692 693 if (lanes < 1) 694 i2c_wr32(sd, CLW_CNTRL, MASK_CLW_LANEDISABLE); 695 if (lanes < 1) 696 i2c_wr32(sd, D0W_CNTRL, MASK_D0W_LANEDISABLE); 697 if (lanes < 2) 698 i2c_wr32(sd, D1W_CNTRL, MASK_D1W_LANEDISABLE); 699 if (lanes < 3) 700 i2c_wr32(sd, D2W_CNTRL, MASK_D2W_LANEDISABLE); 701 if (lanes < 4) 702 i2c_wr32(sd, D3W_CNTRL, MASK_D3W_LANEDISABLE); 703 704 i2c_wr32(sd, LINEINITCNT, pdata->lineinitcnt); 705 i2c_wr32(sd, LPTXTIMECNT, pdata->lptxtimecnt); 706 i2c_wr32(sd, TCLK_HEADERCNT, pdata->tclk_headercnt); 707 i2c_wr32(sd, TCLK_TRAILCNT, pdata->tclk_trailcnt); 708 i2c_wr32(sd, THS_HEADERCNT, pdata->ths_headercnt); 709 i2c_wr32(sd, TWAKEUP, pdata->twakeup); 710 i2c_wr32(sd, TCLK_POSTCNT, pdata->tclk_postcnt); 711 i2c_wr32(sd, THS_TRAILCNT, pdata->ths_trailcnt); 712 i2c_wr32(sd, HSTXVREGCNT, pdata->hstxvregcnt); 713 714 i2c_wr32(sd, HSTXVREGEN, 715 ((lanes > 0) ? MASK_CLM_HSTXVREGEN : 0x0) | 716 ((lanes > 0) ? MASK_D0M_HSTXVREGEN : 0x0) | 717 ((lanes > 1) ? MASK_D1M_HSTXVREGEN : 0x0) | 718 ((lanes > 2) ? MASK_D2M_HSTXVREGEN : 0x0) | 719 ((lanes > 3) ? MASK_D3M_HSTXVREGEN : 0x0)); 720 721 i2c_wr32(sd, TXOPTIONCNTRL, (state->bus.flags & 722 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) ? MASK_CONTCLKMODE : 0); 723 i2c_wr32(sd, STARTCNTRL, MASK_START); 724 i2c_wr32(sd, CSI_START, MASK_STRT); 725 726 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET | 727 MASK_ADDRESS_CSI_CONTROL | 728 MASK_CSI_MODE | 729 MASK_TXHSMD | 730 ((lanes == 4) ? MASK_NOL_4 : 731 (lanes == 3) ? MASK_NOL_3 : 732 (lanes == 2) ? MASK_NOL_2 : MASK_NOL_1)); 733 734 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET | 735 MASK_ADDRESS_CSI_ERR_INTENA | MASK_TXBRK | MASK_QUNK | 736 MASK_WCER | MASK_INER); 737 738 i2c_wr32(sd, CSI_CONFW, MASK_MODE_CLEAR | 739 MASK_ADDRESS_CSI_ERR_HALT | MASK_TXBRK | MASK_QUNK); 740 741 i2c_wr32(sd, CSI_CONFW, MASK_MODE_SET | 742 MASK_ADDRESS_CSI_INT_ENA | MASK_INTER); 743 } 744 745 static void tc358743_set_hdmi_phy(struct v4l2_subdev *sd) 746 { 747 struct tc358743_state *state = to_state(sd); 748 struct tc358743_platform_data *pdata = &state->pdata; 749 750 /* Default settings from REF_02, sheet "Source HDMI" 751 * and custom settings as platform data */ 752 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, 0x0); 753 i2c_wr8(sd, PHY_CTL1, SET_PHY_AUTO_RST1_US(1600) | 754 SET_FREQ_RANGE_MODE_CYCLES(1)); 755 i2c_wr8_and_or(sd, PHY_CTL2, ~MASK_PHY_AUTO_RSTn, 756 (pdata->hdmi_phy_auto_reset_tmds_detected ? 757 MASK_PHY_AUTO_RST2 : 0) | 758 (pdata->hdmi_phy_auto_reset_tmds_in_range ? 759 MASK_PHY_AUTO_RST3 : 0) | 760 (pdata->hdmi_phy_auto_reset_tmds_valid ? 761 MASK_PHY_AUTO_RST4 : 0)); 762 i2c_wr8(sd, PHY_BIAS, 0x40); 763 i2c_wr8(sd, PHY_CSQ, SET_CSQ_CNT_LEVEL(0x0a)); 764 i2c_wr8(sd, AVM_CTL, 45); 765 i2c_wr8_and_or(sd, HDMI_DET, ~MASK_HDMI_DET_V, 766 pdata->hdmi_detection_delay << 4); 767 i2c_wr8_and_or(sd, HV_RST, ~(MASK_H_PI_RST | MASK_V_PI_RST), 768 (pdata->hdmi_phy_auto_reset_hsync_out_of_range ? 769 MASK_H_PI_RST : 0) | 770 (pdata->hdmi_phy_auto_reset_vsync_out_of_range ? 771 MASK_V_PI_RST : 0)); 772 i2c_wr8_and_or(sd, PHY_EN, ~MASK_ENABLE_PHY, MASK_ENABLE_PHY); 773 } 774 775 static void tc358743_set_hdmi_audio(struct v4l2_subdev *sd) 776 { 777 struct tc358743_state *state = to_state(sd); 778 779 /* Default settings from REF_02, sheet "Source HDMI" */ 780 i2c_wr8(sd, FORCE_MUTE, 0x00); 781 i2c_wr8(sd, AUTO_CMD0, MASK_AUTO_MUTE7 | MASK_AUTO_MUTE6 | 782 MASK_AUTO_MUTE5 | MASK_AUTO_MUTE4 | 783 MASK_AUTO_MUTE1 | MASK_AUTO_MUTE0); 784 i2c_wr8(sd, AUTO_CMD1, MASK_AUTO_MUTE9); 785 i2c_wr8(sd, AUTO_CMD2, MASK_AUTO_PLAY3 | MASK_AUTO_PLAY2); 786 i2c_wr8(sd, BUFINIT_START, SET_BUFINIT_START_MS(500)); 787 i2c_wr8(sd, FS_MUTE, 0x00); 788 i2c_wr8(sd, FS_IMODE, MASK_NLPCM_SMODE | MASK_FS_SMODE); 789 i2c_wr8(sd, ACR_MODE, MASK_CTS_MODE); 790 i2c_wr8(sd, ACR_MDF0, MASK_ACR_L2MDF_1976_PPM | MASK_ACR_L1MDF_976_PPM); 791 i2c_wr8(sd, ACR_MDF1, MASK_ACR_L3MDF_3906_PPM); 792 i2c_wr8(sd, SDO_MODE1, MASK_SDO_FMT_I2S); 793 i2c_wr8(sd, DIV_MODE, SET_DIV_DLY_MS(100)); 794 795 mutex_lock(&state->confctl_mutex); 796 i2c_wr16_and_or(sd, CONFCTL, 0xffff, MASK_AUDCHNUM_2 | 797 MASK_AUDOUTSEL_I2S | MASK_AUTOINDEX); 798 mutex_unlock(&state->confctl_mutex); 799 } 800 801 static void tc358743_set_hdmi_info_frame_mode(struct v4l2_subdev *sd) 802 { 803 /* Default settings from REF_02, sheet "Source HDMI" */ 804 i2c_wr8(sd, PK_INT_MODE, MASK_ISRC2_INT_MODE | MASK_ISRC_INT_MODE | 805 MASK_ACP_INT_MODE | MASK_VS_INT_MODE | 806 MASK_SPD_INT_MODE | MASK_MS_INT_MODE | 807 MASK_AUD_INT_MODE | MASK_AVI_INT_MODE); 808 i2c_wr8(sd, NO_PKT_LIMIT, 0x2c); 809 i2c_wr8(sd, NO_PKT_CLR, 0x53); 810 i2c_wr8(sd, ERR_PK_LIMIT, 0x01); 811 i2c_wr8(sd, NO_PKT_LIMIT2, 0x30); 812 i2c_wr8(sd, NO_GDB_LIMIT, 0x10); 813 } 814 815 static void tc358743_initial_setup(struct v4l2_subdev *sd) 816 { 817 struct tc358743_state *state = to_state(sd); 818 struct tc358743_platform_data *pdata = &state->pdata; 819 820 /* CEC and IR are not supported by this driver */ 821 i2c_wr16_and_or(sd, SYSCTL, ~(MASK_CECRST | MASK_IRRST), 822 (MASK_CECRST | MASK_IRRST)); 823 824 tc358743_reset(sd, MASK_CTXRST | MASK_HDMIRST); 825 tc358743_sleep_mode(sd, false); 826 827 i2c_wr16(sd, FIFOCTL, pdata->fifo_level); 828 829 tc358743_set_ref_clk(sd); 830 831 i2c_wr8_and_or(sd, DDC_CTL, ~MASK_DDC5V_MODE, 832 pdata->ddc5v_delay & MASK_DDC5V_MODE); 833 i2c_wr8_and_or(sd, EDID_MODE, ~MASK_EDID_MODE, MASK_EDID_MODE_E_DDC); 834 835 tc358743_set_hdmi_phy(sd); 836 tc358743_set_hdmi_hdcp(sd, pdata->enable_hdcp); 837 tc358743_set_hdmi_audio(sd); 838 tc358743_set_hdmi_info_frame_mode(sd); 839 840 /* All CE and IT formats are detected as RGB full range in DVI mode */ 841 i2c_wr8_and_or(sd, VI_MODE, ~MASK_RGB_DVI, 0); 842 843 i2c_wr8_and_or(sd, VOUT_SET2, ~MASK_VOUTCOLORMODE, 844 MASK_VOUTCOLORMODE_AUTO); 845 i2c_wr8(sd, VOUT_SET3, MASK_VOUT_EXTCNT); 846 } 847 848 /* --------------- IRQ --------------- */ 849 850 static void tc358743_format_change(struct v4l2_subdev *sd) 851 { 852 struct tc358743_state *state = to_state(sd); 853 struct v4l2_dv_timings timings; 854 const struct v4l2_event tc358743_ev_fmt = { 855 .type = V4L2_EVENT_SOURCE_CHANGE, 856 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 857 }; 858 859 if (tc358743_get_detected_timings(sd, &timings)) { 860 enable_stream(sd, false); 861 862 v4l2_dbg(1, debug, sd, "%s: Format changed. No signal\n", 863 __func__); 864 } else { 865 if (!v4l2_match_dv_timings(&state->timings, &timings, 0)) 866 enable_stream(sd, false); 867 868 v4l2_print_dv_timings(sd->name, 869 "tc358743_format_change: Format changed. New format: ", 870 &timings, false); 871 } 872 873 if (sd->devnode) 874 v4l2_subdev_notify_event(sd, &tc358743_ev_fmt); 875 } 876 877 static void tc358743_init_interrupts(struct v4l2_subdev *sd) 878 { 879 u16 i; 880 881 /* clear interrupt status registers */ 882 for (i = SYS_INT; i <= KEY_INT; i++) 883 i2c_wr8(sd, i, 0xff); 884 885 i2c_wr16(sd, INTSTATUS, 0xffff); 886 } 887 888 static void tc358743_enable_interrupts(struct v4l2_subdev *sd, 889 bool cable_connected) 890 { 891 v4l2_dbg(2, debug, sd, "%s: cable connected = %d\n", __func__, 892 cable_connected); 893 894 if (cable_connected) { 895 i2c_wr8(sd, SYS_INTM, ~(MASK_M_DDC | MASK_M_DVI_DET | 896 MASK_M_HDMI_DET) & 0xff); 897 i2c_wr8(sd, CLK_INTM, ~MASK_M_IN_DE_CHG); 898 i2c_wr8(sd, CBIT_INTM, ~(MASK_M_CBIT_FS | MASK_M_AF_LOCK | 899 MASK_M_AF_UNLOCK) & 0xff); 900 i2c_wr8(sd, AUDIO_INTM, ~MASK_M_BUFINIT_END); 901 i2c_wr8(sd, MISC_INTM, ~MASK_M_SYNC_CHG); 902 } else { 903 i2c_wr8(sd, SYS_INTM, ~MASK_M_DDC & 0xff); 904 i2c_wr8(sd, CLK_INTM, 0xff); 905 i2c_wr8(sd, CBIT_INTM, 0xff); 906 i2c_wr8(sd, AUDIO_INTM, 0xff); 907 i2c_wr8(sd, MISC_INTM, 0xff); 908 } 909 } 910 911 static void tc358743_hdmi_audio_int_handler(struct v4l2_subdev *sd, 912 bool *handled) 913 { 914 u8 audio_int_mask = i2c_rd8(sd, AUDIO_INTM); 915 u8 audio_int = i2c_rd8(sd, AUDIO_INT) & ~audio_int_mask; 916 917 i2c_wr8(sd, AUDIO_INT, audio_int); 918 919 v4l2_dbg(3, debug, sd, "%s: AUDIO_INT = 0x%02x\n", __func__, audio_int); 920 921 tc358743_s_ctrl_audio_sampling_rate(sd); 922 tc358743_s_ctrl_audio_present(sd); 923 } 924 925 static void tc358743_csi_err_int_handler(struct v4l2_subdev *sd, bool *handled) 926 { 927 v4l2_err(sd, "%s: CSI_ERR = 0x%x\n", __func__, i2c_rd32(sd, CSI_ERR)); 928 929 i2c_wr32(sd, CSI_INT_CLR, MASK_ICRER); 930 } 931 932 static void tc358743_hdmi_misc_int_handler(struct v4l2_subdev *sd, 933 bool *handled) 934 { 935 u8 misc_int_mask = i2c_rd8(sd, MISC_INTM); 936 u8 misc_int = i2c_rd8(sd, MISC_INT) & ~misc_int_mask; 937 938 i2c_wr8(sd, MISC_INT, misc_int); 939 940 v4l2_dbg(3, debug, sd, "%s: MISC_INT = 0x%02x\n", __func__, misc_int); 941 942 if (misc_int & MASK_I_SYNC_CHG) { 943 /* Reset the HDMI PHY to try to trigger proper lock on the 944 * incoming video format. Erase BKSV to prevent that old keys 945 * are used when a new source is connected. */ 946 if (no_sync(sd) || no_signal(sd)) { 947 tc358743_reset_phy(sd); 948 tc358743_erase_bksv(sd); 949 } 950 951 tc358743_format_change(sd); 952 953 misc_int &= ~MASK_I_SYNC_CHG; 954 if (handled) 955 *handled = true; 956 } 957 958 if (misc_int) { 959 v4l2_err(sd, "%s: Unhandled MISC_INT interrupts: 0x%02x\n", 960 __func__, misc_int); 961 } 962 } 963 964 static void tc358743_hdmi_cbit_int_handler(struct v4l2_subdev *sd, 965 bool *handled) 966 { 967 u8 cbit_int_mask = i2c_rd8(sd, CBIT_INTM); 968 u8 cbit_int = i2c_rd8(sd, CBIT_INT) & ~cbit_int_mask; 969 970 i2c_wr8(sd, CBIT_INT, cbit_int); 971 972 v4l2_dbg(3, debug, sd, "%s: CBIT_INT = 0x%02x\n", __func__, cbit_int); 973 974 if (cbit_int & MASK_I_CBIT_FS) { 975 976 v4l2_dbg(1, debug, sd, "%s: Audio sample rate changed\n", 977 __func__); 978 tc358743_s_ctrl_audio_sampling_rate(sd); 979 980 cbit_int &= ~MASK_I_CBIT_FS; 981 if (handled) 982 *handled = true; 983 } 984 985 if (cbit_int & (MASK_I_AF_LOCK | MASK_I_AF_UNLOCK)) { 986 987 v4l2_dbg(1, debug, sd, "%s: Audio present changed\n", 988 __func__); 989 tc358743_s_ctrl_audio_present(sd); 990 991 cbit_int &= ~(MASK_I_AF_LOCK | MASK_I_AF_UNLOCK); 992 if (handled) 993 *handled = true; 994 } 995 996 if (cbit_int) { 997 v4l2_err(sd, "%s: Unhandled CBIT_INT interrupts: 0x%02x\n", 998 __func__, cbit_int); 999 } 1000 } 1001 1002 static void tc358743_hdmi_clk_int_handler(struct v4l2_subdev *sd, bool *handled) 1003 { 1004 u8 clk_int_mask = i2c_rd8(sd, CLK_INTM); 1005 u8 clk_int = i2c_rd8(sd, CLK_INT) & ~clk_int_mask; 1006 1007 /* Bit 7 and bit 6 are set even when they are masked */ 1008 i2c_wr8(sd, CLK_INT, clk_int | 0x80 | MASK_I_OUT_H_CHG); 1009 1010 v4l2_dbg(3, debug, sd, "%s: CLK_INT = 0x%02x\n", __func__, clk_int); 1011 1012 if (clk_int & (MASK_I_IN_DE_CHG)) { 1013 1014 v4l2_dbg(1, debug, sd, "%s: DE size or position has changed\n", 1015 __func__); 1016 1017 /* If the source switch to a new resolution with the same pixel 1018 * frequency as the existing (e.g. 1080p25 -> 720p50), the 1019 * I_SYNC_CHG interrupt is not always triggered, while the 1020 * I_IN_DE_CHG interrupt seems to work fine. Format change 1021 * notifications are only sent when the signal is stable to 1022 * reduce the number of notifications. */ 1023 if (!no_signal(sd) && !no_sync(sd)) 1024 tc358743_format_change(sd); 1025 1026 clk_int &= ~(MASK_I_IN_DE_CHG); 1027 if (handled) 1028 *handled = true; 1029 } 1030 1031 if (clk_int) { 1032 v4l2_err(sd, "%s: Unhandled CLK_INT interrupts: 0x%02x\n", 1033 __func__, clk_int); 1034 } 1035 } 1036 1037 static void tc358743_hdmi_sys_int_handler(struct v4l2_subdev *sd, bool *handled) 1038 { 1039 struct tc358743_state *state = to_state(sd); 1040 u8 sys_int_mask = i2c_rd8(sd, SYS_INTM); 1041 u8 sys_int = i2c_rd8(sd, SYS_INT) & ~sys_int_mask; 1042 1043 i2c_wr8(sd, SYS_INT, sys_int); 1044 1045 v4l2_dbg(3, debug, sd, "%s: SYS_INT = 0x%02x\n", __func__, sys_int); 1046 1047 if (sys_int & MASK_I_DDC) { 1048 bool tx_5v = tx_5v_power_present(sd); 1049 1050 v4l2_dbg(1, debug, sd, "%s: Tx 5V power present: %s\n", 1051 __func__, tx_5v ? "yes" : "no"); 1052 1053 if (tx_5v) { 1054 tc358743_enable_edid(sd); 1055 } else { 1056 tc358743_enable_interrupts(sd, false); 1057 tc358743_disable_edid(sd); 1058 memset(&state->timings, 0, sizeof(state->timings)); 1059 tc358743_erase_bksv(sd); 1060 tc358743_update_controls(sd); 1061 } 1062 1063 sys_int &= ~MASK_I_DDC; 1064 if (handled) 1065 *handled = true; 1066 } 1067 1068 if (sys_int & MASK_I_DVI) { 1069 v4l2_dbg(1, debug, sd, "%s: HDMI->DVI change detected\n", 1070 __func__); 1071 1072 /* Reset the HDMI PHY to try to trigger proper lock on the 1073 * incoming video format. Erase BKSV to prevent that old keys 1074 * are used when a new source is connected. */ 1075 if (no_sync(sd) || no_signal(sd)) { 1076 tc358743_reset_phy(sd); 1077 tc358743_erase_bksv(sd); 1078 } 1079 1080 sys_int &= ~MASK_I_DVI; 1081 if (handled) 1082 *handled = true; 1083 } 1084 1085 if (sys_int & MASK_I_HDMI) { 1086 v4l2_dbg(1, debug, sd, "%s: DVI->HDMI change detected\n", 1087 __func__); 1088 1089 /* Register is reset in DVI mode (REF_01, c. 6.6.41) */ 1090 i2c_wr8(sd, ANA_CTL, MASK_APPL_PCSX_NORMAL | MASK_ANALOG_ON); 1091 1092 sys_int &= ~MASK_I_HDMI; 1093 if (handled) 1094 *handled = true; 1095 } 1096 1097 if (sys_int) { 1098 v4l2_err(sd, "%s: Unhandled SYS_INT interrupts: 0x%02x\n", 1099 __func__, sys_int); 1100 } 1101 } 1102 1103 /* --------------- CORE OPS --------------- */ 1104 1105 static int tc358743_log_status(struct v4l2_subdev *sd) 1106 { 1107 struct tc358743_state *state = to_state(sd); 1108 struct v4l2_dv_timings timings; 1109 uint8_t hdmi_sys_status = i2c_rd8(sd, SYS_STATUS); 1110 uint16_t sysctl = i2c_rd16(sd, SYSCTL); 1111 u8 vi_status3 = i2c_rd8(sd, VI_STATUS3); 1112 const int deep_color_mode[4] = { 8, 10, 12, 16 }; 1113 static const char * const input_color_space[] = { 1114 "RGB", "YCbCr 601", "Adobe RGB", "YCbCr 709", "NA (4)", 1115 "xvYCC 601", "NA(6)", "xvYCC 709", "NA(8)", "sYCC601", 1116 "NA(10)", "NA(11)", "NA(12)", "Adobe YCC 601"}; 1117 1118 v4l2_info(sd, "-----Chip status-----\n"); 1119 v4l2_info(sd, "Chip ID: 0x%02x\n", 1120 (i2c_rd16(sd, CHIPID) & MASK_CHIPID) >> 8); 1121 v4l2_info(sd, "Chip revision: 0x%02x\n", 1122 i2c_rd16(sd, CHIPID) & MASK_REVID); 1123 v4l2_info(sd, "Reset: IR: %d, CEC: %d, CSI TX: %d, HDMI: %d\n", 1124 !!(sysctl & MASK_IRRST), 1125 !!(sysctl & MASK_CECRST), 1126 !!(sysctl & MASK_CTXRST), 1127 !!(sysctl & MASK_HDMIRST)); 1128 v4l2_info(sd, "Sleep mode: %s\n", sysctl & MASK_SLEEP ? "on" : "off"); 1129 v4l2_info(sd, "Cable detected (+5V power): %s\n", 1130 hdmi_sys_status & MASK_S_DDC5V ? "yes" : "no"); 1131 v4l2_info(sd, "DDC lines enabled: %s\n", 1132 (i2c_rd8(sd, EDID_MODE) & MASK_EDID_MODE_E_DDC) ? 1133 "yes" : "no"); 1134 v4l2_info(sd, "Hotplug enabled: %s\n", 1135 (i2c_rd8(sd, HPD_CTL) & MASK_HPD_OUT0) ? 1136 "yes" : "no"); 1137 v4l2_info(sd, "CEC enabled: %s\n", 1138 (i2c_rd16(sd, CECEN) & MASK_CECEN) ? "yes" : "no"); 1139 v4l2_info(sd, "-----Signal status-----\n"); 1140 v4l2_info(sd, "TMDS signal detected: %s\n", 1141 hdmi_sys_status & MASK_S_TMDS ? "yes" : "no"); 1142 v4l2_info(sd, "Stable sync signal: %s\n", 1143 hdmi_sys_status & MASK_S_SYNC ? "yes" : "no"); 1144 v4l2_info(sd, "PHY PLL locked: %s\n", 1145 hdmi_sys_status & MASK_S_PHY_PLL ? "yes" : "no"); 1146 v4l2_info(sd, "PHY DE detected: %s\n", 1147 hdmi_sys_status & MASK_S_PHY_SCDT ? "yes" : "no"); 1148 1149 if (tc358743_get_detected_timings(sd, &timings)) { 1150 v4l2_info(sd, "No video detected\n"); 1151 } else { 1152 v4l2_print_dv_timings(sd->name, "Detected format: ", &timings, 1153 true); 1154 } 1155 v4l2_print_dv_timings(sd->name, "Configured format: ", &state->timings, 1156 true); 1157 1158 v4l2_info(sd, "-----CSI-TX status-----\n"); 1159 v4l2_info(sd, "Lanes needed: %d\n", 1160 tc358743_num_csi_lanes_needed(sd)); 1161 v4l2_info(sd, "Lanes in use: %d\n", 1162 tc358743_num_csi_lanes_in_use(sd)); 1163 v4l2_info(sd, "Waiting for particular sync signal: %s\n", 1164 (i2c_rd16(sd, CSI_STATUS) & MASK_S_WSYNC) ? 1165 "yes" : "no"); 1166 v4l2_info(sd, "Transmit mode: %s\n", 1167 (i2c_rd16(sd, CSI_STATUS) & MASK_S_TXACT) ? 1168 "yes" : "no"); 1169 v4l2_info(sd, "Receive mode: %s\n", 1170 (i2c_rd16(sd, CSI_STATUS) & MASK_S_RXACT) ? 1171 "yes" : "no"); 1172 v4l2_info(sd, "Stopped: %s\n", 1173 (i2c_rd16(sd, CSI_STATUS) & MASK_S_HLT) ? 1174 "yes" : "no"); 1175 v4l2_info(sd, "Color space: %s\n", 1176 state->mbus_fmt_code == MEDIA_BUS_FMT_UYVY8_1X16 ? 1177 "YCbCr 422 16-bit" : 1178 state->mbus_fmt_code == MEDIA_BUS_FMT_RGB888_1X24 ? 1179 "RGB 888 24-bit" : "Unsupported"); 1180 1181 v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D"); 1182 v4l2_info(sd, "HDCP encrypted content: %s\n", 1183 hdmi_sys_status & MASK_S_HDCP ? "yes" : "no"); 1184 v4l2_info(sd, "Input color space: %s %s range\n", 1185 input_color_space[(vi_status3 & MASK_S_V_COLOR) >> 1], 1186 (vi_status3 & MASK_LIMITED) ? "limited" : "full"); 1187 if (!is_hdmi(sd)) 1188 return 0; 1189 v4l2_info(sd, "AV Mute: %s\n", hdmi_sys_status & MASK_S_AVMUTE ? "on" : 1190 "off"); 1191 v4l2_info(sd, "Deep color mode: %d-bits per channel\n", 1192 deep_color_mode[(i2c_rd8(sd, VI_STATUS1) & 1193 MASK_S_DEEPCOLOR) >> 2]); 1194 print_avi_infoframe(sd); 1195 1196 return 0; 1197 } 1198 1199 #ifdef CONFIG_VIDEO_ADV_DEBUG 1200 static void tc358743_print_register_map(struct v4l2_subdev *sd) 1201 { 1202 v4l2_info(sd, "0x0000–0x00FF: Global Control Register\n"); 1203 v4l2_info(sd, "0x0100–0x01FF: CSI2-TX PHY Register\n"); 1204 v4l2_info(sd, "0x0200–0x03FF: CSI2-TX PPI Register\n"); 1205 v4l2_info(sd, "0x0400–0x05FF: Reserved\n"); 1206 v4l2_info(sd, "0x0600–0x06FF: CEC Register\n"); 1207 v4l2_info(sd, "0x0700–0x84FF: Reserved\n"); 1208 v4l2_info(sd, "0x8500–0x85FF: HDMIRX System Control Register\n"); 1209 v4l2_info(sd, "0x8600–0x86FF: HDMIRX Audio Control Register\n"); 1210 v4l2_info(sd, "0x8700–0x87FF: HDMIRX InfoFrame packet data Register\n"); 1211 v4l2_info(sd, "0x8800–0x88FF: HDMIRX HDCP Port Register\n"); 1212 v4l2_info(sd, "0x8900–0x89FF: HDMIRX Video Output Port & 3D Register\n"); 1213 v4l2_info(sd, "0x8A00–0x8BFF: Reserved\n"); 1214 v4l2_info(sd, "0x8C00–0x8FFF: HDMIRX EDID-RAM (1024bytes)\n"); 1215 v4l2_info(sd, "0x9000–0x90FF: HDMIRX GBD Extraction Control\n"); 1216 v4l2_info(sd, "0x9100–0x92FF: HDMIRX GBD RAM read\n"); 1217 v4l2_info(sd, "0x9300- : Reserved\n"); 1218 } 1219 1220 static int tc358743_get_reg_size(u16 address) 1221 { 1222 /* REF_01 p. 66-72 */ 1223 if (address <= 0x00ff) 1224 return 2; 1225 else if ((address >= 0x0100) && (address <= 0x06FF)) 1226 return 4; 1227 else if ((address >= 0x0700) && (address <= 0x84ff)) 1228 return 2; 1229 else 1230 return 1; 1231 } 1232 1233 static int tc358743_g_register(struct v4l2_subdev *sd, 1234 struct v4l2_dbg_register *reg) 1235 { 1236 if (reg->reg > 0xffff) { 1237 tc358743_print_register_map(sd); 1238 return -EINVAL; 1239 } 1240 1241 reg->size = tc358743_get_reg_size(reg->reg); 1242 1243 i2c_rd(sd, reg->reg, (u8 *)®->val, reg->size); 1244 1245 return 0; 1246 } 1247 1248 static int tc358743_s_register(struct v4l2_subdev *sd, 1249 const struct v4l2_dbg_register *reg) 1250 { 1251 if (reg->reg > 0xffff) { 1252 tc358743_print_register_map(sd); 1253 return -EINVAL; 1254 } 1255 1256 /* It should not be possible for the user to enable HDCP with a simple 1257 * v4l2-dbg command. 1258 * 1259 * DO NOT REMOVE THIS unless all other issues with HDCP have been 1260 * resolved. 1261 */ 1262 if (reg->reg == HDCP_MODE || 1263 reg->reg == HDCP_REG1 || 1264 reg->reg == HDCP_REG2 || 1265 reg->reg == HDCP_REG3 || 1266 reg->reg == BCAPS) 1267 return 0; 1268 1269 i2c_wr(sd, (u16)reg->reg, (u8 *)®->val, 1270 tc358743_get_reg_size(reg->reg)); 1271 1272 return 0; 1273 } 1274 #endif 1275 1276 static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled) 1277 { 1278 u16 intstatus = i2c_rd16(sd, INTSTATUS); 1279 1280 v4l2_dbg(1, debug, sd, "%s: IntStatus = 0x%04x\n", __func__, intstatus); 1281 1282 if (intstatus & MASK_HDMI_INT) { 1283 u8 hdmi_int0 = i2c_rd8(sd, HDMI_INT0); 1284 u8 hdmi_int1 = i2c_rd8(sd, HDMI_INT1); 1285 1286 if (hdmi_int0 & MASK_I_MISC) 1287 tc358743_hdmi_misc_int_handler(sd, handled); 1288 if (hdmi_int1 & MASK_I_CBIT) 1289 tc358743_hdmi_cbit_int_handler(sd, handled); 1290 if (hdmi_int1 & MASK_I_CLK) 1291 tc358743_hdmi_clk_int_handler(sd, handled); 1292 if (hdmi_int1 & MASK_I_SYS) 1293 tc358743_hdmi_sys_int_handler(sd, handled); 1294 if (hdmi_int1 & MASK_I_AUD) 1295 tc358743_hdmi_audio_int_handler(sd, handled); 1296 1297 i2c_wr16(sd, INTSTATUS, MASK_HDMI_INT); 1298 intstatus &= ~MASK_HDMI_INT; 1299 } 1300 1301 if (intstatus & MASK_CSI_INT) { 1302 u32 csi_int = i2c_rd32(sd, CSI_INT); 1303 1304 if (csi_int & MASK_INTER) 1305 tc358743_csi_err_int_handler(sd, handled); 1306 1307 i2c_wr16(sd, INTSTATUS, MASK_CSI_INT); 1308 intstatus &= ~MASK_CSI_INT; 1309 } 1310 1311 intstatus = i2c_rd16(sd, INTSTATUS); 1312 if (intstatus) { 1313 v4l2_dbg(1, debug, sd, 1314 "%s: Unhandled IntStatus interrupts: 0x%02x\n", 1315 __func__, intstatus); 1316 } 1317 1318 return 0; 1319 } 1320 1321 static irqreturn_t tc358743_irq_handler(int irq, void *dev_id) 1322 { 1323 struct tc358743_state *state = dev_id; 1324 bool handled; 1325 1326 tc358743_isr(&state->sd, 0, &handled); 1327 1328 return handled ? IRQ_HANDLED : IRQ_NONE; 1329 } 1330 1331 static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, 1332 struct v4l2_event_subscription *sub) 1333 { 1334 switch (sub->type) { 1335 case V4L2_EVENT_SOURCE_CHANGE: 1336 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub); 1337 case V4L2_EVENT_CTRL: 1338 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub); 1339 default: 1340 return -EINVAL; 1341 } 1342 } 1343 1344 /* --------------- VIDEO OPS --------------- */ 1345 1346 static int tc358743_g_input_status(struct v4l2_subdev *sd, u32 *status) 1347 { 1348 *status = 0; 1349 *status |= no_signal(sd) ? V4L2_IN_ST_NO_SIGNAL : 0; 1350 *status |= no_sync(sd) ? V4L2_IN_ST_NO_SYNC : 0; 1351 1352 v4l2_dbg(1, debug, sd, "%s: status = 0x%x\n", __func__, *status); 1353 1354 return 0; 1355 } 1356 1357 static int tc358743_s_dv_timings(struct v4l2_subdev *sd, 1358 struct v4l2_dv_timings *timings) 1359 { 1360 struct tc358743_state *state = to_state(sd); 1361 1362 if (!timings) 1363 return -EINVAL; 1364 1365 if (debug) 1366 v4l2_print_dv_timings(sd->name, "tc358743_s_dv_timings: ", 1367 timings, false); 1368 1369 if (v4l2_match_dv_timings(&state->timings, timings, 0)) { 1370 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__); 1371 return 0; 1372 } 1373 1374 if (!v4l2_valid_dv_timings(timings, 1375 &tc358743_timings_cap, NULL, NULL)) { 1376 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); 1377 return -ERANGE; 1378 } 1379 1380 state->timings = *timings; 1381 1382 enable_stream(sd, false); 1383 tc358743_set_pll(sd); 1384 tc358743_set_csi(sd); 1385 1386 return 0; 1387 } 1388 1389 static int tc358743_g_dv_timings(struct v4l2_subdev *sd, 1390 struct v4l2_dv_timings *timings) 1391 { 1392 struct tc358743_state *state = to_state(sd); 1393 1394 *timings = state->timings; 1395 1396 return 0; 1397 } 1398 1399 static int tc358743_enum_dv_timings(struct v4l2_subdev *sd, 1400 struct v4l2_enum_dv_timings *timings) 1401 { 1402 if (timings->pad != 0) 1403 return -EINVAL; 1404 1405 return v4l2_enum_dv_timings_cap(timings, 1406 &tc358743_timings_cap, NULL, NULL); 1407 } 1408 1409 static int tc358743_query_dv_timings(struct v4l2_subdev *sd, 1410 struct v4l2_dv_timings *timings) 1411 { 1412 int ret; 1413 1414 ret = tc358743_get_detected_timings(sd, timings); 1415 if (ret) 1416 return ret; 1417 1418 if (debug) 1419 v4l2_print_dv_timings(sd->name, "tc358743_query_dv_timings: ", 1420 timings, false); 1421 1422 if (!v4l2_valid_dv_timings(timings, 1423 &tc358743_timings_cap, NULL, NULL)) { 1424 v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__); 1425 return -ERANGE; 1426 } 1427 1428 return 0; 1429 } 1430 1431 static int tc358743_dv_timings_cap(struct v4l2_subdev *sd, 1432 struct v4l2_dv_timings_cap *cap) 1433 { 1434 if (cap->pad != 0) 1435 return -EINVAL; 1436 1437 *cap = tc358743_timings_cap; 1438 1439 return 0; 1440 } 1441 1442 static int tc358743_g_mbus_config(struct v4l2_subdev *sd, 1443 struct v4l2_mbus_config *cfg) 1444 { 1445 cfg->type = V4L2_MBUS_CSI2; 1446 1447 /* Support for non-continuous CSI-2 clock is missing in the driver */ 1448 cfg->flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; 1449 1450 switch (tc358743_num_csi_lanes_in_use(sd)) { 1451 case 1: 1452 cfg->flags |= V4L2_MBUS_CSI2_1_LANE; 1453 break; 1454 case 2: 1455 cfg->flags |= V4L2_MBUS_CSI2_2_LANE; 1456 break; 1457 case 3: 1458 cfg->flags |= V4L2_MBUS_CSI2_3_LANE; 1459 break; 1460 case 4: 1461 cfg->flags |= V4L2_MBUS_CSI2_4_LANE; 1462 break; 1463 default: 1464 return -EINVAL; 1465 } 1466 1467 return 0; 1468 } 1469 1470 static int tc358743_s_stream(struct v4l2_subdev *sd, int enable) 1471 { 1472 enable_stream(sd, enable); 1473 1474 return 0; 1475 } 1476 1477 /* --------------- PAD OPS --------------- */ 1478 1479 static int tc358743_get_fmt(struct v4l2_subdev *sd, 1480 struct v4l2_subdev_pad_config *cfg, 1481 struct v4l2_subdev_format *format) 1482 { 1483 struct tc358743_state *state = to_state(sd); 1484 u8 vi_rep = i2c_rd8(sd, VI_REP); 1485 1486 if (format->pad != 0) 1487 return -EINVAL; 1488 1489 format->format.code = state->mbus_fmt_code; 1490 format->format.width = state->timings.bt.width; 1491 format->format.height = state->timings.bt.height; 1492 format->format.field = V4L2_FIELD_NONE; 1493 1494 switch (vi_rep & MASK_VOUT_COLOR_SEL) { 1495 case MASK_VOUT_COLOR_RGB_FULL: 1496 case MASK_VOUT_COLOR_RGB_LIMITED: 1497 format->format.colorspace = V4L2_COLORSPACE_SRGB; 1498 break; 1499 case MASK_VOUT_COLOR_601_YCBCR_LIMITED: 1500 case MASK_VOUT_COLOR_601_YCBCR_FULL: 1501 format->format.colorspace = V4L2_COLORSPACE_SMPTE170M; 1502 break; 1503 case MASK_VOUT_COLOR_709_YCBCR_FULL: 1504 case MASK_VOUT_COLOR_709_YCBCR_LIMITED: 1505 format->format.colorspace = V4L2_COLORSPACE_REC709; 1506 break; 1507 default: 1508 format->format.colorspace = 0; 1509 break; 1510 } 1511 1512 return 0; 1513 } 1514 1515 static int tc358743_set_fmt(struct v4l2_subdev *sd, 1516 struct v4l2_subdev_pad_config *cfg, 1517 struct v4l2_subdev_format *format) 1518 { 1519 struct tc358743_state *state = to_state(sd); 1520 1521 u32 code = format->format.code; /* is overwritten by get_fmt */ 1522 int ret = tc358743_get_fmt(sd, cfg, format); 1523 1524 format->format.code = code; 1525 1526 if (ret) 1527 return ret; 1528 1529 switch (code) { 1530 case MEDIA_BUS_FMT_RGB888_1X24: 1531 case MEDIA_BUS_FMT_UYVY8_1X16: 1532 break; 1533 default: 1534 return -EINVAL; 1535 } 1536 1537 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 1538 return 0; 1539 1540 state->mbus_fmt_code = format->format.code; 1541 1542 enable_stream(sd, false); 1543 tc358743_set_pll(sd); 1544 tc358743_set_csi(sd); 1545 tc358743_set_csi_color_space(sd); 1546 1547 return 0; 1548 } 1549 1550 static int tc358743_g_edid(struct v4l2_subdev *sd, 1551 struct v4l2_subdev_edid *edid) 1552 { 1553 struct tc358743_state *state = to_state(sd); 1554 1555 if (edid->pad != 0) 1556 return -EINVAL; 1557 1558 if (edid->start_block == 0 && edid->blocks == 0) { 1559 edid->blocks = state->edid_blocks_written; 1560 return 0; 1561 } 1562 1563 if (state->edid_blocks_written == 0) 1564 return -ENODATA; 1565 1566 if (edid->start_block >= state->edid_blocks_written || 1567 edid->blocks == 0) 1568 return -EINVAL; 1569 1570 if (edid->start_block + edid->blocks > state->edid_blocks_written) 1571 edid->blocks = state->edid_blocks_written - edid->start_block; 1572 1573 i2c_rd(sd, EDID_RAM + (edid->start_block * EDID_BLOCK_SIZE), edid->edid, 1574 edid->blocks * EDID_BLOCK_SIZE); 1575 1576 return 0; 1577 } 1578 1579 static int tc358743_s_edid(struct v4l2_subdev *sd, 1580 struct v4l2_subdev_edid *edid) 1581 { 1582 struct tc358743_state *state = to_state(sd); 1583 u16 edid_len = edid->blocks * EDID_BLOCK_SIZE; 1584 1585 v4l2_dbg(2, debug, sd, "%s, pad %d, start block %d, blocks %d\n", 1586 __func__, edid->pad, edid->start_block, edid->blocks); 1587 1588 if (edid->pad != 0) 1589 return -EINVAL; 1590 1591 if (edid->start_block != 0) 1592 return -EINVAL; 1593 1594 if (edid->blocks > EDID_NUM_BLOCKS_MAX) { 1595 edid->blocks = EDID_NUM_BLOCKS_MAX; 1596 return -E2BIG; 1597 } 1598 1599 tc358743_disable_edid(sd); 1600 1601 i2c_wr8(sd, EDID_LEN1, edid_len & 0xff); 1602 i2c_wr8(sd, EDID_LEN2, edid_len >> 8); 1603 1604 if (edid->blocks == 0) { 1605 state->edid_blocks_written = 0; 1606 return 0; 1607 } 1608 1609 i2c_wr(sd, EDID_RAM, edid->edid, edid_len); 1610 1611 state->edid_blocks_written = edid->blocks; 1612 1613 if (tx_5v_power_present(sd)) 1614 tc358743_enable_edid(sd); 1615 1616 return 0; 1617 } 1618 1619 /* -------------------------------------------------------------------------- */ 1620 1621 static const struct v4l2_subdev_core_ops tc358743_core_ops = { 1622 .log_status = tc358743_log_status, 1623 #ifdef CONFIG_VIDEO_ADV_DEBUG 1624 .g_register = tc358743_g_register, 1625 .s_register = tc358743_s_register, 1626 #endif 1627 .interrupt_service_routine = tc358743_isr, 1628 .subscribe_event = tc358743_subscribe_event, 1629 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 1630 }; 1631 1632 static const struct v4l2_subdev_video_ops tc358743_video_ops = { 1633 .g_input_status = tc358743_g_input_status, 1634 .s_dv_timings = tc358743_s_dv_timings, 1635 .g_dv_timings = tc358743_g_dv_timings, 1636 .query_dv_timings = tc358743_query_dv_timings, 1637 .g_mbus_config = tc358743_g_mbus_config, 1638 .s_stream = tc358743_s_stream, 1639 }; 1640 1641 static const struct v4l2_subdev_pad_ops tc358743_pad_ops = { 1642 .set_fmt = tc358743_set_fmt, 1643 .get_fmt = tc358743_get_fmt, 1644 .get_edid = tc358743_g_edid, 1645 .set_edid = tc358743_s_edid, 1646 .enum_dv_timings = tc358743_enum_dv_timings, 1647 .dv_timings_cap = tc358743_dv_timings_cap, 1648 }; 1649 1650 static const struct v4l2_subdev_ops tc358743_ops = { 1651 .core = &tc358743_core_ops, 1652 .video = &tc358743_video_ops, 1653 .pad = &tc358743_pad_ops, 1654 }; 1655 1656 /* --------------- CUSTOM CTRLS --------------- */ 1657 1658 static const struct v4l2_ctrl_config tc358743_ctrl_audio_sampling_rate = { 1659 .id = TC358743_CID_AUDIO_SAMPLING_RATE, 1660 .name = "Audio sampling rate", 1661 .type = V4L2_CTRL_TYPE_INTEGER, 1662 .min = 0, 1663 .max = 768000, 1664 .step = 1, 1665 .def = 0, 1666 .flags = V4L2_CTRL_FLAG_READ_ONLY, 1667 }; 1668 1669 static const struct v4l2_ctrl_config tc358743_ctrl_audio_present = { 1670 .id = TC358743_CID_AUDIO_PRESENT, 1671 .name = "Audio present", 1672 .type = V4L2_CTRL_TYPE_BOOLEAN, 1673 .min = 0, 1674 .max = 1, 1675 .step = 1, 1676 .def = 0, 1677 .flags = V4L2_CTRL_FLAG_READ_ONLY, 1678 }; 1679 1680 /* --------------- PROBE / REMOVE --------------- */ 1681 1682 #ifdef CONFIG_OF 1683 static void tc358743_gpio_reset(struct tc358743_state *state) 1684 { 1685 usleep_range(5000, 10000); 1686 gpiod_set_value(state->reset_gpio, 1); 1687 usleep_range(1000, 2000); 1688 gpiod_set_value(state->reset_gpio, 0); 1689 msleep(20); 1690 } 1691 1692 static int tc358743_probe_of(struct tc358743_state *state) 1693 { 1694 struct device *dev = &state->i2c_client->dev; 1695 struct v4l2_of_endpoint *endpoint; 1696 struct device_node *ep; 1697 struct clk *refclk; 1698 u32 bps_pr_lane; 1699 int ret = -EINVAL; 1700 1701 refclk = devm_clk_get(dev, "refclk"); 1702 if (IS_ERR(refclk)) { 1703 if (PTR_ERR(refclk) != -EPROBE_DEFER) 1704 dev_err(dev, "failed to get refclk: %ld\n", 1705 PTR_ERR(refclk)); 1706 return PTR_ERR(refclk); 1707 } 1708 1709 ep = of_graph_get_next_endpoint(dev->of_node, NULL); 1710 if (!ep) { 1711 dev_err(dev, "missing endpoint node\n"); 1712 return -EINVAL; 1713 } 1714 1715 endpoint = v4l2_of_alloc_parse_endpoint(ep); 1716 if (IS_ERR(endpoint)) { 1717 dev_err(dev, "failed to parse endpoint\n"); 1718 return PTR_ERR(endpoint); 1719 } 1720 1721 if (endpoint->bus_type != V4L2_MBUS_CSI2 || 1722 endpoint->bus.mipi_csi2.num_data_lanes == 0 || 1723 endpoint->nr_of_link_frequencies == 0) { 1724 dev_err(dev, "missing CSI-2 properties in endpoint\n"); 1725 goto free_endpoint; 1726 } 1727 1728 state->bus = endpoint->bus.mipi_csi2; 1729 1730 clk_prepare_enable(refclk); 1731 1732 state->pdata.refclk_hz = clk_get_rate(refclk); 1733 state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS; 1734 state->pdata.enable_hdcp = false; 1735 /* A FIFO level of 16 should be enough for 2-lane 720p60 at 594 MHz. */ 1736 state->pdata.fifo_level = 16; 1737 /* 1738 * The PLL input clock is obtained by dividing refclk by pll_prd. 1739 * It must be between 6 MHz and 40 MHz, lower frequency is better. 1740 */ 1741 switch (state->pdata.refclk_hz) { 1742 case 26000000: 1743 case 27000000: 1744 case 42000000: 1745 state->pdata.pll_prd = state->pdata.refclk_hz / 6000000; 1746 break; 1747 default: 1748 dev_err(dev, "unsupported refclk rate: %u Hz\n", 1749 state->pdata.refclk_hz); 1750 goto disable_clk; 1751 } 1752 1753 /* 1754 * The CSI bps per lane must be between 62.5 Mbps and 1 Gbps. 1755 * The default is 594 Mbps for 4-lane 1080p60 or 2-lane 720p60. 1756 */ 1757 bps_pr_lane = 2 * endpoint->link_frequencies[0]; 1758 if (bps_pr_lane < 62500000U || bps_pr_lane > 1000000000U) { 1759 dev_err(dev, "unsupported bps per lane: %u bps\n", bps_pr_lane); 1760 goto disable_clk; 1761 } 1762 1763 /* The CSI speed per lane is refclk / pll_prd * pll_fbd */ 1764 state->pdata.pll_fbd = bps_pr_lane / 1765 state->pdata.refclk_hz * state->pdata.pll_prd; 1766 1767 /* 1768 * FIXME: These timings are from REF_02 for 594 Mbps per lane (297 MHz 1769 * link frequency). In principle it should be possible to calculate 1770 * them based on link frequency and resolution. 1771 */ 1772 if (bps_pr_lane != 594000000U) 1773 dev_warn(dev, "untested bps per lane: %u bps\n", bps_pr_lane); 1774 state->pdata.lineinitcnt = 0xe80; 1775 state->pdata.lptxtimecnt = 0x003; 1776 /* tclk-preparecnt: 3, tclk-zerocnt: 20 */ 1777 state->pdata.tclk_headercnt = 0x1403; 1778 state->pdata.tclk_trailcnt = 0x00; 1779 /* ths-preparecnt: 3, ths-zerocnt: 1 */ 1780 state->pdata.ths_headercnt = 0x0103; 1781 state->pdata.twakeup = 0x4882; 1782 state->pdata.tclk_postcnt = 0x008; 1783 state->pdata.ths_trailcnt = 0x2; 1784 state->pdata.hstxvregcnt = 0; 1785 1786 state->reset_gpio = devm_gpiod_get_optional(dev, "reset", 1787 GPIOD_OUT_LOW); 1788 if (IS_ERR(state->reset_gpio)) { 1789 dev_err(dev, "failed to get reset gpio\n"); 1790 ret = PTR_ERR(state->reset_gpio); 1791 goto disable_clk; 1792 } 1793 1794 if (state->reset_gpio) 1795 tc358743_gpio_reset(state); 1796 1797 ret = 0; 1798 goto free_endpoint; 1799 1800 disable_clk: 1801 clk_disable_unprepare(refclk); 1802 free_endpoint: 1803 v4l2_of_free_endpoint(endpoint); 1804 return ret; 1805 } 1806 #else 1807 static inline int tc358743_probe_of(struct tc358743_state *state) 1808 { 1809 return -ENODEV; 1810 } 1811 #endif 1812 1813 static int tc358743_probe(struct i2c_client *client, 1814 const struct i2c_device_id *id) 1815 { 1816 static struct v4l2_dv_timings default_timing = 1817 V4L2_DV_BT_CEA_640X480P59_94; 1818 struct tc358743_state *state; 1819 struct tc358743_platform_data *pdata = client->dev.platform_data; 1820 struct v4l2_subdev *sd; 1821 int err; 1822 1823 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 1824 return -EIO; 1825 v4l_dbg(1, debug, client, "chip found @ 0x%x (%s)\n", 1826 client->addr << 1, client->adapter->name); 1827 1828 state = devm_kzalloc(&client->dev, sizeof(struct tc358743_state), 1829 GFP_KERNEL); 1830 if (!state) 1831 return -ENOMEM; 1832 1833 state->i2c_client = client; 1834 1835 /* platform data */ 1836 if (pdata) { 1837 state->pdata = *pdata; 1838 state->bus.flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; 1839 } else { 1840 err = tc358743_probe_of(state); 1841 if (err == -ENODEV) 1842 v4l_err(client, "No platform data!\n"); 1843 if (err) 1844 return err; 1845 } 1846 1847 sd = &state->sd; 1848 v4l2_i2c_subdev_init(sd, client, &tc358743_ops); 1849 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; 1850 1851 /* i2c access */ 1852 if ((i2c_rd16(sd, CHIPID) & MASK_CHIPID) != 0) { 1853 v4l2_info(sd, "not a TC358743 on address 0x%x\n", 1854 client->addr << 1); 1855 return -ENODEV; 1856 } 1857 1858 /* control handlers */ 1859 v4l2_ctrl_handler_init(&state->hdl, 3); 1860 1861 /* private controls */ 1862 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(&state->hdl, NULL, 1863 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0); 1864 1865 /* custom controls */ 1866 state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl, 1867 &tc358743_ctrl_audio_sampling_rate, NULL); 1868 1869 state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl, 1870 &tc358743_ctrl_audio_present, NULL); 1871 1872 sd->ctrl_handler = &state->hdl; 1873 if (state->hdl.error) { 1874 err = state->hdl.error; 1875 goto err_hdl; 1876 } 1877 1878 if (tc358743_update_controls(sd)) { 1879 err = -ENODEV; 1880 goto err_hdl; 1881 } 1882 1883 /* work queues */ 1884 state->work_queues = create_singlethread_workqueue(client->name); 1885 if (!state->work_queues) { 1886 v4l2_err(sd, "Could not create work queue\n"); 1887 err = -ENOMEM; 1888 goto err_hdl; 1889 } 1890 1891 state->pad.flags = MEDIA_PAD_FL_SOURCE; 1892 err = media_entity_init(&sd->entity, 1, &state->pad, 0); 1893 if (err < 0) 1894 goto err_hdl; 1895 1896 sd->dev = &client->dev; 1897 err = v4l2_async_register_subdev(sd); 1898 if (err < 0) 1899 goto err_hdl; 1900 1901 mutex_init(&state->confctl_mutex); 1902 1903 INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug, 1904 tc358743_delayed_work_enable_hotplug); 1905 1906 tc358743_initial_setup(sd); 1907 1908 tc358743_s_dv_timings(sd, &default_timing); 1909 1910 state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24; 1911 tc358743_set_csi_color_space(sd); 1912 1913 tc358743_init_interrupts(sd); 1914 1915 if (state->i2c_client->irq) { 1916 err = devm_request_threaded_irq(&client->dev, 1917 state->i2c_client->irq, 1918 NULL, tc358743_irq_handler, 1919 IRQF_TRIGGER_HIGH | IRQF_ONESHOT, 1920 "tc358743", state); 1921 if (err) 1922 goto err_work_queues; 1923 } 1924 1925 tc358743_enable_interrupts(sd, tx_5v_power_present(sd)); 1926 i2c_wr16(sd, INTMASK, ~(MASK_HDMI_MSK | MASK_CSI_MSK) & 0xffff); 1927 1928 err = v4l2_ctrl_handler_setup(sd->ctrl_handler); 1929 if (err) 1930 goto err_work_queues; 1931 1932 v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, 1933 client->addr << 1, client->adapter->name); 1934 1935 return 0; 1936 1937 err_work_queues: 1938 cancel_delayed_work(&state->delayed_work_enable_hotplug); 1939 destroy_workqueue(state->work_queues); 1940 mutex_destroy(&state->confctl_mutex); 1941 err_hdl: 1942 media_entity_cleanup(&sd->entity); 1943 v4l2_ctrl_handler_free(&state->hdl); 1944 return err; 1945 } 1946 1947 static int tc358743_remove(struct i2c_client *client) 1948 { 1949 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1950 struct tc358743_state *state = to_state(sd); 1951 1952 cancel_delayed_work(&state->delayed_work_enable_hotplug); 1953 destroy_workqueue(state->work_queues); 1954 v4l2_async_unregister_subdev(sd); 1955 v4l2_device_unregister_subdev(sd); 1956 mutex_destroy(&state->confctl_mutex); 1957 media_entity_cleanup(&sd->entity); 1958 v4l2_ctrl_handler_free(&state->hdl); 1959 1960 return 0; 1961 } 1962 1963 static struct i2c_device_id tc358743_id[] = { 1964 {"tc358743", 0}, 1965 {} 1966 }; 1967 1968 MODULE_DEVICE_TABLE(i2c, tc358743_id); 1969 1970 static struct i2c_driver tc358743_driver = { 1971 .driver = { 1972 .name = "tc358743", 1973 }, 1974 .probe = tc358743_probe, 1975 .remove = tc358743_remove, 1976 .id_table = tc358743_id, 1977 }; 1978 1979 module_i2c_driver(tc358743_driver); 1980