drivers/media/i2c/adv7842.c

   1 /*
   2  * adv7842 - Analog Devices ADV7842 video decoder driver
   3  *
   4  * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   5  *
   6  * This program is free software; you may redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  11  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  12  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  13  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  14  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  15  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  16  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  17  * SOFTWARE.
  18  *
  19  */
  20
  21 /*
  22  * References (c = chapter, p = page):
  23  * REF_01 - Analog devices, ADV7842,
  24  *              Register Settings Recommendations, Rev. 1.9, April 2011
  25  * REF_02 - Analog devices, Software User Guide, UG-206,
  26  *              ADV7842 I2C Register Maps, Rev. 0, November 2010
  27  * REF_03 - Analog devices, Hardware User Guide, UG-214,
  28  *              ADV7842 Fast Switching 2:1 HDMI 1.4 Receiver with 3D-Comb
  29  *              Decoder and Digitizer , Rev. 0, January 2011
  30  */
  31
  32
  33 #include <linux/kernel.h>
  34 #include <linux/module.h>
  35 #include <linux/slab.h>
  36 #include <linux/i2c.h>
  37 #include <linux/delay.h>
  38 #include <linux/videodev2.h>
  39 #include <linux/workqueue.h>
  40 #include <linux/v4l2-dv-timings.h>
  41 #include <linux/hdmi.h>
  42 #include <media/v4l2-device.h>
  43 #include <media/v4l2-ctrls.h>
  44 #include <media/v4l2-dv-timings.h>
  45 #include <media/adv7842.h>
  46
  47 static int debug;
  48 module_param(debug, int, 0644);
  49 MODULE_PARM_DESC(debug, "debug level (0-2)");
  50
  51 MODULE_DESCRIPTION("Analog Devices ADV7842 video decoder driver");
  52 MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
  53 MODULE_AUTHOR("Martin Bugge <marbugge@cisco.com>");
  54 MODULE_LICENSE("GPL");
  55
  56 /* ADV7842 system clock frequency */
  57 #define ADV7842_fsc (28636360)
  58
  59 /*
  60 **********************************************************************
  61 *
  62 *  Arrays with configuration parameters for the ADV7842
  63 *
  64 **********************************************************************
  65 */
  66
  67 struct adv7842_state {
  68         struct adv7842_platform_data pdata;
  69         struct v4l2_subdev sd;
  70         struct media_pad pad;
  71         struct v4l2_ctrl_handler hdl;
  72         enum adv7842_mode mode;
  73         struct v4l2_dv_timings timings;
  74         enum adv7842_vid_std_select vid_std_select;
  75         v4l2_std_id norm;
  76         struct {
  77                 u8 edid[256];
  78                 u32 present;
  79         } hdmi_edid;
  80         struct {
  81                 u8 edid[256];
  82                 u32 present;
  83         } vga_edid;
  84         struct v4l2_fract aspect_ratio;
  85         u32 rgb_quantization_range;
  86         bool is_cea_format;
  87         struct workqueue_struct *work_queues;
  88         struct delayed_work delayed_work_enable_hotplug;
  89         bool restart_stdi_once;
  90         bool hdmi_port_a;
  91
  92         /* i2c clients */
  93         struct i2c_client *i2c_sdp_io;
  94         struct i2c_client *i2c_sdp;
  95         struct i2c_client *i2c_cp;
  96         struct i2c_client *i2c_vdp;
  97         struct i2c_client *i2c_afe;
  98         struct i2c_client *i2c_hdmi;
  99         struct i2c_client *i2c_repeater;
 100         struct i2c_client *i2c_edid;
 101         struct i2c_client *i2c_infoframe;
 102         struct i2c_client *i2c_cec;
 103         struct i2c_client *i2c_avlink;
 104
 105         /* controls */
 106         struct v4l2_ctrl *detect_tx_5v_ctrl;
 107         struct v4l2_ctrl *analog_sampling_phase_ctrl;
 108         struct v4l2_ctrl *free_run_color_ctrl_manual;
 109         struct v4l2_ctrl *free_run_color_ctrl;
 110         struct v4l2_ctrl *rgb_quantization_range_ctrl;
 111 };
 112
 113 /* Unsupported timings. This device cannot support 720p30. */
 114 static const struct v4l2_dv_timings adv7842_timings_exceptions[] = {
 115         V4L2_DV_BT_CEA_1280X720P30,
 116         { }
 117 };
 118
 119 static bool adv7842_check_dv_timings(const struct v4l2_dv_timings *t, void *hdl)
 120 {
 121         int i;
 122
 123         for (i = 0; adv7842_timings_exceptions[i].bt.width; i++)
 124                 if (v4l2_match_dv_timings(t, adv7842_timings_exceptions + i, 0))
 125                         return false;
 126         return true;
 127 }
 128
 129 struct adv7842_video_standards {
 130         struct v4l2_dv_timings timings;
 131         u8 vid_std;
 132         u8 v_freq;
 133 };
 134
 135 /* sorted by number of lines */
 136 static const struct adv7842_video_standards adv7842_prim_mode_comp[] = {
 137         /* { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 }, TODO flickering */
 138         { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
 139         { V4L2_DV_BT_CEA_1280X720P50, 0x19, 0x01 },
 140         { V4L2_DV_BT_CEA_1280X720P60, 0x19, 0x00 },
 141         { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
 142         { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
 143         { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
 144         { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
 145         { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
 146         /* TODO add 1920x1080P60_RB (CVT timing) */
 147         { },
 148 };
 149
 150 /* sorted by number of lines */
 151 static const struct adv7842_video_standards adv7842_prim_mode_gr[] = {
 152         { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
 153         { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
 154         { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
 155         { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
 156         { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
 157         { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
 158         { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
 159         { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
 160         { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
 161         { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
 162         { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
 163         { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
 164         { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
 165         { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
 166         { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
 167         { V4L2_DV_BT_DMT_1360X768P60, 0x12, 0x00 },
 168         { V4L2_DV_BT_DMT_1366X768P60, 0x13, 0x00 },
 169         { V4L2_DV_BT_DMT_1400X1050P60, 0x14, 0x00 },
 170         { V4L2_DV_BT_DMT_1400X1050P75, 0x15, 0x00 },
 171         { V4L2_DV_BT_DMT_1600X1200P60, 0x16, 0x00 }, /* TODO not tested */
 172         /* TODO add 1600X1200P60_RB (not a DMT timing) */
 173         { V4L2_DV_BT_DMT_1680X1050P60, 0x18, 0x00 },
 174         { V4L2_DV_BT_DMT_1920X1200P60_RB, 0x19, 0x00 }, /* TODO not tested */
 175         { },
 176 };
 177
 178 /* sorted by number of lines */
 179 static const struct adv7842_video_standards adv7842_prim_mode_hdmi_comp[] = {
 180         { V4L2_DV_BT_CEA_720X480P59_94, 0x0a, 0x00 },
 181         { V4L2_DV_BT_CEA_720X576P50, 0x0b, 0x00 },
 182         { V4L2_DV_BT_CEA_1280X720P50, 0x13, 0x01 },
 183         { V4L2_DV_BT_CEA_1280X720P60, 0x13, 0x00 },
 184         { V4L2_DV_BT_CEA_1920X1080P24, 0x1e, 0x04 },
 185         { V4L2_DV_BT_CEA_1920X1080P25, 0x1e, 0x03 },
 186         { V4L2_DV_BT_CEA_1920X1080P30, 0x1e, 0x02 },
 187         { V4L2_DV_BT_CEA_1920X1080P50, 0x1e, 0x01 },
 188         { V4L2_DV_BT_CEA_1920X1080P60, 0x1e, 0x00 },
 189         { },
 190 };
 191
 192 /* sorted by number of lines */
 193 static const struct adv7842_video_standards adv7842_prim_mode_hdmi_gr[] = {
 194         { V4L2_DV_BT_DMT_640X480P60, 0x08, 0x00 },
 195         { V4L2_DV_BT_DMT_640X480P72, 0x09, 0x00 },
 196         { V4L2_DV_BT_DMT_640X480P75, 0x0a, 0x00 },
 197         { V4L2_DV_BT_DMT_640X480P85, 0x0b, 0x00 },
 198         { V4L2_DV_BT_DMT_800X600P56, 0x00, 0x00 },
 199         { V4L2_DV_BT_DMT_800X600P60, 0x01, 0x00 },
 200         { V4L2_DV_BT_DMT_800X600P72, 0x02, 0x00 },
 201         { V4L2_DV_BT_DMT_800X600P75, 0x03, 0x00 },
 202         { V4L2_DV_BT_DMT_800X600P85, 0x04, 0x00 },
 203         { V4L2_DV_BT_DMT_1024X768P60, 0x0c, 0x00 },
 204         { V4L2_DV_BT_DMT_1024X768P70, 0x0d, 0x00 },
 205         { V4L2_DV_BT_DMT_1024X768P75, 0x0e, 0x00 },
 206         { V4L2_DV_BT_DMT_1024X768P85, 0x0f, 0x00 },
 207         { V4L2_DV_BT_DMT_1280X1024P60, 0x05, 0x00 },
 208         { V4L2_DV_BT_DMT_1280X1024P75, 0x06, 0x00 },
 209         { },
 210 };
 211
 212 /* ----------------------------------------------------------------------- */
 213
 214 static inline struct adv7842_state *to_state(struct v4l2_subdev *sd)
 215 {
 216         return container_of(sd, struct adv7842_state, sd);
 217 }
 218
 219 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 220 {
 221         return &container_of(ctrl->handler, struct adv7842_state, hdl)->sd;
 222 }
 223
 224 static inline unsigned htotal(const struct v4l2_bt_timings *t)
 225 {
 226         return V4L2_DV_BT_FRAME_WIDTH(t);
 227 }
 228
 229 static inline unsigned vtotal(const struct v4l2_bt_timings *t)
 230 {
 231         return V4L2_DV_BT_FRAME_HEIGHT(t);
 232 }
 233
 234
 235 /* ----------------------------------------------------------------------- */
 236
 237 static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
 238                                           u8 command, bool check)
 239 {
 240         union i2c_smbus_data data;
 241
 242         if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
 243                             I2C_SMBUS_READ, command,
 244                             I2C_SMBUS_BYTE_DATA, &data))
 245                 return data.byte;
 246         if (check)
 247                 v4l_err(client, "error reading %02x, %02x\n",
 248                         client->addr, command);
 249         return -EIO;
 250 }
 251
 252 static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
 253 {
 254         int i;
 255
 256         for (i = 0; i < 3; i++) {
 257                 int ret = adv_smbus_read_byte_data_check(client, command, true);
 258
 259                 if (ret >= 0) {
 260                         if (i)
 261                                 v4l_err(client, "read ok after %d retries\n", i);
 262                         return ret;
 263                 }
 264         }
 265         v4l_err(client, "read failed\n");
 266         return -EIO;
 267 }
 268
 269 static s32 adv_smbus_write_byte_data(struct i2c_client *client,
 270                                      u8 command, u8 value)
 271 {
 272         union i2c_smbus_data data;
 273         int err;
 274         int i;
 275
 276         data.byte = value;
 277         for (i = 0; i < 3; i++) {
 278                 err = i2c_smbus_xfer(client->adapter, client->addr,
 279                                      client->flags,
 280                                      I2C_SMBUS_WRITE, command,
 281                                      I2C_SMBUS_BYTE_DATA, &data);
 282                 if (!err)
 283                         break;
 284         }
 285         if (err < 0)
 286                 v4l_err(client, "error writing %02x, %02x, %02x\n",
 287                         client->addr, command, value);
 288         return err;
 289 }
 290
 291 static void adv_smbus_write_byte_no_check(struct i2c_client *client,
 292                                           u8 command, u8 value)
 293 {
 294         union i2c_smbus_data data;
 295         data.byte = value;
 296
 297         i2c_smbus_xfer(client->adapter, client->addr,
 298                        client->flags,
 299                        I2C_SMBUS_WRITE, command,
 300                        I2C_SMBUS_BYTE_DATA, &data);
 301 }
 302
 303 static s32 adv_smbus_write_i2c_block_data(struct i2c_client *client,
 304                                   u8 command, unsigned length, const u8 *values)
 305 {
 306         union i2c_smbus_data data;
 307
 308         if (length > I2C_SMBUS_BLOCK_MAX)
 309                 length = I2C_SMBUS_BLOCK_MAX;
 310         data.block[0] = length;
 311         memcpy(data.block + 1, values, length);
 312         return i2c_smbus_xfer(client->adapter, client->addr, client->flags,
 313                               I2C_SMBUS_WRITE, command,
 314                               I2C_SMBUS_I2C_BLOCK_DATA, &data);
 315 }
 316
 317 /* ----------------------------------------------------------------------- */
 318
 319 static inline int io_read(struct v4l2_subdev *sd, u8 reg)
 320 {
 321         struct i2c_client *client = v4l2_get_subdevdata(sd);
 322
 323         return adv_smbus_read_byte_data(client, reg);
 324 }
 325
 326 static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 327 {
 328         struct i2c_client *client = v4l2_get_subdevdata(sd);
 329
 330         return adv_smbus_write_byte_data(client, reg, val);
 331 }
 332
 333 static inline int io_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 334 {
 335         return io_write(sd, reg, (io_read(sd, reg) & mask) | val);
 336 }
 337
 338 static inline int avlink_read(struct v4l2_subdev *sd, u8 reg)
 339 {
 340         struct adv7842_state *state = to_state(sd);
 341
 342         return adv_smbus_read_byte_data(state->i2c_avlink, reg);
 343 }
 344
 345 static inline int avlink_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 346 {
 347         struct adv7842_state *state = to_state(sd);
 348
 349         return adv_smbus_write_byte_data(state->i2c_avlink, reg, val);
 350 }
 351
 352 static inline int cec_read(struct v4l2_subdev *sd, u8 reg)
 353 {
 354         struct adv7842_state *state = to_state(sd);
 355
 356         return adv_smbus_read_byte_data(state->i2c_cec, reg);
 357 }
 358
 359 static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 360 {
 361         struct adv7842_state *state = to_state(sd);
 362
 363         return adv_smbus_write_byte_data(state->i2c_cec, reg, val);
 364 }
 365
 366 static inline int cec_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 367 {
 368         return cec_write(sd, reg, (cec_read(sd, reg) & mask) | val);
 369 }
 370
 371 static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg)
 372 {
 373         struct adv7842_state *state = to_state(sd);
 374
 375         return adv_smbus_read_byte_data(state->i2c_infoframe, reg);
 376 }
 377
 378 static inline int infoframe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 379 {
 380         struct adv7842_state *state = to_state(sd);
 381
 382         return adv_smbus_write_byte_data(state->i2c_infoframe, reg, val);
 383 }
 384
 385 static inline int sdp_io_read(struct v4l2_subdev *sd, u8 reg)
 386 {
 387         struct adv7842_state *state = to_state(sd);
 388
 389         return adv_smbus_read_byte_data(state->i2c_sdp_io, reg);
 390 }
 391
 392 static inline int sdp_io_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 393 {
 394         struct adv7842_state *state = to_state(sd);
 395
 396         return adv_smbus_write_byte_data(state->i2c_sdp_io, reg, val);
 397 }
 398
 399 static inline int sdp_io_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 400 {
 401         return sdp_io_write(sd, reg, (sdp_io_read(sd, reg) & mask) | val);
 402 }
 403
 404 static inline int sdp_read(struct v4l2_subdev *sd, u8 reg)
 405 {
 406         struct adv7842_state *state = to_state(sd);
 407
 408         return adv_smbus_read_byte_data(state->i2c_sdp, reg);
 409 }
 410
 411 static inline int sdp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 412 {
 413         struct adv7842_state *state = to_state(sd);
 414
 415         return adv_smbus_write_byte_data(state->i2c_sdp, reg, val);
 416 }
 417
 418 static inline int sdp_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 419 {
 420         return sdp_write(sd, reg, (sdp_read(sd, reg) & mask) | val);
 421 }
 422
 423 static inline int afe_read(struct v4l2_subdev *sd, u8 reg)
 424 {
 425         struct adv7842_state *state = to_state(sd);
 426
 427         return adv_smbus_read_byte_data(state->i2c_afe, reg);
 428 }
 429
 430 static inline int afe_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 431 {
 432         struct adv7842_state *state = to_state(sd);
 433
 434         return adv_smbus_write_byte_data(state->i2c_afe, reg, val);
 435 }
 436
 437 static inline int afe_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 438 {
 439         return afe_write(sd, reg, (afe_read(sd, reg) & mask) | val);
 440 }
 441
 442 static inline int rep_read(struct v4l2_subdev *sd, u8 reg)
 443 {
 444         struct adv7842_state *state = to_state(sd);
 445
 446         return adv_smbus_read_byte_data(state->i2c_repeater, reg);
 447 }
 448
 449 static inline int rep_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 450 {
 451         struct adv7842_state *state = to_state(sd);
 452
 453         return adv_smbus_write_byte_data(state->i2c_repeater, reg, val);
 454 }
 455
 456 static inline int rep_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 457 {
 458         return rep_write(sd, reg, (rep_read(sd, reg) & mask) | val);
 459 }
 460
 461 static inline int edid_read(struct v4l2_subdev *sd, u8 reg)
 462 {
 463         struct adv7842_state *state = to_state(sd);
 464
 465         return adv_smbus_read_byte_data(state->i2c_edid, reg);
 466 }
 467
 468 static inline int edid_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 469 {
 470         struct adv7842_state *state = to_state(sd);
 471
 472         return adv_smbus_write_byte_data(state->i2c_edid, reg, val);
 473 }
 474
 475 static inline int hdmi_read(struct v4l2_subdev *sd, u8 reg)
 476 {
 477         struct adv7842_state *state = to_state(sd);
 478
 479         return adv_smbus_read_byte_data(state->i2c_hdmi, reg);
 480 }
 481
 482 static inline int hdmi_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 483 {
 484         struct adv7842_state *state = to_state(sd);
 485
 486         return adv_smbus_write_byte_data(state->i2c_hdmi, reg, val);
 487 }
 488
 489 static inline int hdmi_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 490 {
 491         return hdmi_write(sd, reg, (hdmi_read(sd, reg) & mask) | val);
 492 }
 493
 494 static inline int cp_read(struct v4l2_subdev *sd, u8 reg)
 495 {
 496         struct adv7842_state *state = to_state(sd);
 497
 498         return adv_smbus_read_byte_data(state->i2c_cp, reg);
 499 }
 500
 501 static inline int cp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 502 {
 503         struct adv7842_state *state = to_state(sd);
 504
 505         return adv_smbus_write_byte_data(state->i2c_cp, reg, val);
 506 }
 507
 508 static inline int cp_write_and_or(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
 509 {
 510         return cp_write(sd, reg, (cp_read(sd, reg) & mask) | val);
 511 }
 512
 513 static inline int vdp_read(struct v4l2_subdev *sd, u8 reg)
 514 {
 515         struct adv7842_state *state = to_state(sd);
 516
 517         return adv_smbus_read_byte_data(state->i2c_vdp, reg);
 518 }
 519
 520 static inline int vdp_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 521 {
 522         struct adv7842_state *state = to_state(sd);
 523
 524         return adv_smbus_write_byte_data(state->i2c_vdp, reg, val);
 525 }
 526
 527 static void main_reset(struct v4l2_subdev *sd)
 528 {
 529         struct i2c_client *client = v4l2_get_subdevdata(sd);
 530
 531         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
 532
 533         adv_smbus_write_byte_no_check(client, 0xff, 0x80);
 534
 535         mdelay(5);
 536 }
 537
 538 /* ----------------------------------------------------------------------- */
 539
 540 static inline bool is_analog_input(struct v4l2_subdev *sd)
 541 {
 542         struct adv7842_state *state = to_state(sd);
 543
 544         return ((state->mode == ADV7842_MODE_RGB) ||
 545                 (state->mode == ADV7842_MODE_COMP));
 546 }
 547
 548 static inline bool is_digital_input(struct v4l2_subdev *sd)
 549 {
 550         struct adv7842_state *state = to_state(sd);
 551
 552         return state->mode == ADV7842_MODE_HDMI;
 553 }
 554
 555 static const struct v4l2_dv_timings_cap adv7842_timings_cap_analog = {
 556         .type = V4L2_DV_BT_656_1120,
 557         /* keep this initialization for compatibility with GCC < 4.4.6 */
 558         .reserved = { 0 },
 559         V4L2_INIT_BT_TIMINGS(0, 1920, 0, 1200, 25000000, 170000000,
 560                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
 561                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
 562                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
 563                         V4L2_DV_BT_CAP_CUSTOM)
 564 };
 565
 566 static const struct v4l2_dv_timings_cap adv7842_timings_cap_digital = {
 567         .type = V4L2_DV_BT_656_1120,
 568         /* keep this initialization for compatibility with GCC < 4.4.6 */
 569         .reserved = { 0 },
 570         V4L2_INIT_BT_TIMINGS(0, 1920, 0, 1200, 25000000, 225000000,
 571                 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
 572                         V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
 573                 V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
 574                         V4L2_DV_BT_CAP_CUSTOM)
 575 };
 576
 577 static inline const struct v4l2_dv_timings_cap *
 578 adv7842_get_dv_timings_cap(struct v4l2_subdev *sd)
 579 {
 580         return is_digital_input(sd) ? &adv7842_timings_cap_digital :
 581                                       &adv7842_timings_cap_analog;
 582 }
 583
 584 /* ----------------------------------------------------------------------- */
 585
 586 static void adv7842_delayed_work_enable_hotplug(struct work_struct *work)
 587 {
 588         struct delayed_work *dwork = to_delayed_work(work);
 589         struct adv7842_state *state = container_of(dwork,
 590                         struct adv7842_state, delayed_work_enable_hotplug);
 591         struct v4l2_subdev *sd = &state->sd;
 592         int present = state->hdmi_edid.present;
 593         u8 mask = 0;
 594
 595         v4l2_dbg(2, debug, sd, "%s: enable hotplug on ports: 0x%x\n",
 596                         __func__, present);
 597
 598         if (present & (0x04 << ADV7842_EDID_PORT_A))
 599                 mask |= 0x20;
 600         if (present & (0x04 << ADV7842_EDID_PORT_B))
 601                 mask |= 0x10;
 602         io_write_and_or(sd, 0x20, 0xcf, mask);
 603 }
 604
 605 static int edid_write_vga_segment(struct v4l2_subdev *sd)
 606 {
 607         struct i2c_client *client = v4l2_get_subdevdata(sd);
 608         struct adv7842_state *state = to_state(sd);
 609         const u8 *val = state->vga_edid.edid;
 610         int err = 0;
 611         int i;
 612
 613         v4l2_dbg(2, debug, sd, "%s: write EDID on VGA port\n", __func__);
 614
 615         /* HPA disable on port A and B */
 616         io_write_and_or(sd, 0x20, 0xcf, 0x00);
 617
 618         /* Disable I2C access to internal EDID ram from VGA DDC port */
 619         rep_write_and_or(sd, 0x7f, 0x7f, 0x00);
 620
 621         /* edid segment pointer '1' for VGA port */
 622         rep_write_and_or(sd, 0x77, 0xef, 0x10);
 623
 624         for (i = 0; !err && i < 256; i += I2C_SMBUS_BLOCK_MAX)
 625                 err = adv_smbus_write_i2c_block_data(state->i2c_edid, i,
 626                                              I2C_SMBUS_BLOCK_MAX, val + i);
 627         if (err)
 628                 return err;
 629
 630         /* Calculates the checksums and enables I2C access
 631          * to internal EDID ram from VGA DDC port.
 632          */
 633         rep_write_and_or(sd, 0x7f, 0x7f, 0x80);
 634
 635         for (i = 0; i < 1000; i++) {
 636                 if (rep_read(sd, 0x79) & 0x20)
 637                         break;
 638                 mdelay(1);
 639         }
 640         if (i == 1000) {
 641                 v4l_err(client, "error enabling edid on VGA port\n");
 642                 return -EIO;
 643         }
 644
 645         /* enable hotplug after 200 ms */
 646         queue_delayed_work(state->work_queues,
 647                         &state->delayed_work_enable_hotplug, HZ / 5);
 648
 649         return 0;
 650 }
 651
 652 static int edid_spa_location(const u8 *edid)
 653 {
 654         u8 d;
 655
 656         /*
 657          * TODO, improve and update for other CEA extensions
 658          * currently only for 1 segment (256 bytes),
 659          * i.e. 1 extension block and CEA revision 3.
 660          */
 661         if ((edid[0x7e] != 1) ||
 662             (edid[0x80] != 0x02) ||
 663             (edid[0x81] != 0x03)) {
 664                 return -EINVAL;
 665         }
 666         /*
 667          * search Vendor Specific Data Block (tag 3)
 668          */
 669         d = edid[0x82] & 0x7f;
 670         if (d > 4) {
 671                 int i = 0x84;
 672                 int end = 0x80 + d;
 673                 do {
 674                         u8 tag = edid[i]>>5;
 675                         u8 len = edid[i] & 0x1f;
 676
 677                         if ((tag == 3) && (len >= 5))
 678                                 return i + 4;
 679                         i += len + 1;
 680                 } while (i < end);
 681         }
 682         return -EINVAL;
 683 }
 684
 685 static int edid_write_hdmi_segment(struct v4l2_subdev *sd, u8 port)
 686 {
 687         struct i2c_client *client = v4l2_get_subdevdata(sd);
 688         struct adv7842_state *state = to_state(sd);
 689         const u8 *val = state->hdmi_edid.edid;
 690         int spa_loc = edid_spa_location(val);
 691         int err = 0;
 692         int i;
 693
 694         v4l2_dbg(2, debug, sd, "%s: write EDID on port %c (spa at 0x%x)\n",
 695                         __func__, (port == ADV7842_EDID_PORT_A) ? 'A' : 'B', spa_loc);
 696
 697         /* HPA disable on port A and B */
 698         io_write_and_or(sd, 0x20, 0xcf, 0x00);
 699
 700         /* Disable I2C access to internal EDID ram from HDMI DDC ports */
 701         rep_write_and_or(sd, 0x77, 0xf3, 0x00);
 702
 703         if (!state->hdmi_edid.present)
 704                 return 0;
 705
 706         /* edid segment pointer '0' for HDMI ports */
 707         rep_write_and_or(sd, 0x77, 0xef, 0x00);
 708
 709         for (i = 0; !err && i < 256; i += I2C_SMBUS_BLOCK_MAX)
 710                 err = adv_smbus_write_i2c_block_data(state->i2c_edid, i,
 711                                                      I2C_SMBUS_BLOCK_MAX, val + i);
 712         if (err)
 713                 return err;
 714
 715         if (spa_loc < 0)
 716                 spa_loc = 0xc0; /* Default value [REF_02, p. 199] */
 717
 718         if (port == ADV7842_EDID_PORT_A) {
 719                 rep_write(sd, 0x72, val[spa_loc]);
 720                 rep_write(sd, 0x73, val[spa_loc + 1]);
 721         } else {
 722                 rep_write(sd, 0x74, val[spa_loc]);
 723                 rep_write(sd, 0x75, val[spa_loc + 1]);
 724         }
 725         rep_write(sd, 0x76, spa_loc & 0xff);
 726         rep_write_and_or(sd, 0x77, 0xbf, (spa_loc >> 2) & 0x40);
 727
 728         /* Calculates the checksums and enables I2C access to internal
 729          * EDID ram from HDMI DDC ports
 730          */
 731         rep_write_and_or(sd, 0x77, 0xf3, state->hdmi_edid.present);
 732
 733         for (i = 0; i < 1000; i++) {
 734                 if (rep_read(sd, 0x7d) & state->hdmi_edid.present)
 735                         break;
 736                 mdelay(1);
 737         }
 738         if (i == 1000) {
 739                 v4l_err(client, "error enabling edid on port %c\n",
 740                                 (port == ADV7842_EDID_PORT_A) ? 'A' : 'B');
 741                 return -EIO;
 742         }
 743
 744         /* enable hotplug after 200 ms */
 745         queue_delayed_work(state->work_queues,
 746                         &state->delayed_work_enable_hotplug, HZ / 5);
 747
 748         return 0;
 749 }
 750
 751 /* ----------------------------------------------------------------------- */
 752
 753 #ifdef CONFIG_VIDEO_ADV_DEBUG
 754 static void adv7842_inv_register(struct v4l2_subdev *sd)
 755 {
 756         v4l2_info(sd, "0x000-0x0ff: IO Map\n");
 757         v4l2_info(sd, "0x100-0x1ff: AVLink Map\n");
 758         v4l2_info(sd, "0x200-0x2ff: CEC Map\n");
 759         v4l2_info(sd, "0x300-0x3ff: InfoFrame Map\n");
 760         v4l2_info(sd, "0x400-0x4ff: SDP_IO Map\n");
 761         v4l2_info(sd, "0x500-0x5ff: SDP Map\n");
 762         v4l2_info(sd, "0x600-0x6ff: AFE Map\n");
 763         v4l2_info(sd, "0x700-0x7ff: Repeater Map\n");
 764         v4l2_info(sd, "0x800-0x8ff: EDID Map\n");
 765         v4l2_info(sd, "0x900-0x9ff: HDMI Map\n");
 766         v4l2_info(sd, "0xa00-0xaff: CP Map\n");
 767         v4l2_info(sd, "0xb00-0xbff: VDP Map\n");
 768 }
 769
 770 static int adv7842_g_register(struct v4l2_subdev *sd,
 771                               struct v4l2_dbg_register *reg)
 772 {
 773         reg->size = 1;
 774         switch (reg->reg >> 8) {
 775         case 0:
 776                 reg->val = io_read(sd, reg->reg & 0xff);
 777                 break;
 778         case 1:
 779                 reg->val = avlink_read(sd, reg->reg & 0xff);
 780                 break;
 781         case 2:
 782                 reg->val = cec_read(sd, reg->reg & 0xff);
 783                 break;
 784         case 3:
 785                 reg->val = infoframe_read(sd, reg->reg & 0xff);
 786                 break;
 787         case 4:
 788                 reg->val = sdp_io_read(sd, reg->reg & 0xff);
 789                 break;
 790         case 5:
 791                 reg->val = sdp_read(sd, reg->reg & 0xff);
 792                 break;
 793         case 6:
 794                 reg->val = afe_read(sd, reg->reg & 0xff);
 795                 break;
 796         case 7:
 797                 reg->val = rep_read(sd, reg->reg & 0xff);
 798                 break;
 799         case 8:
 800                 reg->val = edid_read(sd, reg->reg & 0xff);
 801                 break;
 802         case 9:
 803                 reg->val = hdmi_read(sd, reg->reg & 0xff);
 804                 break;
 805         case 0xa:
 806                 reg->val = cp_read(sd, reg->reg & 0xff);
 807                 break;
 808         case 0xb:
 809                 reg->val = vdp_read(sd, reg->reg & 0xff);
 810                 break;
 811         default:
 812                 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
 813                 adv7842_inv_register(sd);
 814                 break;
 815         }
 816         return 0;
 817 }
 818
 819 static int adv7842_s_register(struct v4l2_subdev *sd,
 820                 const struct v4l2_dbg_register *reg)
 821 {
 822         u8 val = reg->val & 0xff;
 823
 824         switch (reg->reg >> 8) {
 825         case 0:
 826                 io_write(sd, reg->reg & 0xff, val);
 827                 break;
 828         case 1:
 829                 avlink_write(sd, reg->reg & 0xff, val);
 830                 break;
 831         case 2:
 832                 cec_write(sd, reg->reg & 0xff, val);
 833                 break;
 834         case 3:
 835                 infoframe_write(sd, reg->reg & 0xff, val);
 836                 break;
 837         case 4:
 838                 sdp_io_write(sd, reg->reg & 0xff, val);
 839                 break;
 840         case 5:
 841                 sdp_write(sd, reg->reg & 0xff, val);
 842                 break;
 843         case 6:
 844                 afe_write(sd, reg->reg & 0xff, val);
 845                 break;
 846         case 7:
 847                 rep_write(sd, reg->reg & 0xff, val);
 848                 break;
 849         case 8:
 850                 edid_write(sd, reg->reg & 0xff, val);
 851                 break;
 852         case 9:
 853                 hdmi_write(sd, reg->reg & 0xff, val);
 854                 break;
 855         case 0xa:
 856                 cp_write(sd, reg->reg & 0xff, val);
 857                 break;
 858         case 0xb:
 859                 vdp_write(sd, reg->reg & 0xff, val);
 860                 break;
 861         default:
 862                 v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
 863                 adv7842_inv_register(sd);
 864                 break;
 865         }
 866         return 0;
 867 }
 868 #endif
 869
 870 static int adv7842_s_detect_tx_5v_ctrl(struct v4l2_subdev *sd)
 871 {
 872         struct adv7842_state *state = to_state(sd);
 873         int prev = v4l2_ctrl_g_ctrl(state->detect_tx_5v_ctrl);
 874         u8 reg_io_6f = io_read(sd, 0x6f);
 875         int val = 0;
 876
 877         if (reg_io_6f & 0x02)
 878                 val |= 1; /* port A */
 879         if (reg_io_6f & 0x01)
 880                 val |= 2; /* port B */
 881
 882         v4l2_dbg(1, debug, sd, "%s: 0x%x -> 0x%x\n", __func__, prev, val);
 883
 884         if (val != prev)
 885                 return v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, val);
 886         return 0;
 887 }
 888
 889 static int find_and_set_predefined_video_timings(struct v4l2_subdev *sd,
 890                 u8 prim_mode,
 891                 const struct adv7842_video_standards *predef_vid_timings,
 892                 const struct v4l2_dv_timings *timings)
 893 {
 894         int i;
 895
 896         for (i = 0; predef_vid_timings[i].timings.bt.width; i++) {
 897                 if (!v4l2_match_dv_timings(timings, &predef_vid_timings[i].timings,
 898                                           is_digital_input(sd) ? 250000 : 1000000))
 899                         continue;
 900                 /* video std */
 901                 io_write(sd, 0x00, predef_vid_timings[i].vid_std);
 902                 /* v_freq and prim mode */
 903                 io_write(sd, 0x01, (predef_vid_timings[i].v_freq << 4) + prim_mode);
 904                 return 0;
 905         }
 906
 907         return -1;
 908 }
 909
 910 static int configure_predefined_video_timings(struct v4l2_subdev *sd,
 911                 struct v4l2_dv_timings *timings)
 912 {
 913         struct adv7842_state *state = to_state(sd);
 914         int err;
 915
 916         v4l2_dbg(1, debug, sd, "%s\n", __func__);
 917
 918         /* reset to default values */
 919         io_write(sd, 0x16, 0x43);
 920         io_write(sd, 0x17, 0x5a);
 921         /* disable embedded syncs for auto graphics mode */
 922         cp_write_and_or(sd, 0x81, 0xef, 0x00);
 923         cp_write(sd, 0x26, 0x00);
 924         cp_write(sd, 0x27, 0x00);
 925         cp_write(sd, 0x28, 0x00);
 926         cp_write(sd, 0x29, 0x00);
 927         cp_write(sd, 0x8f, 0x40);
 928         cp_write(sd, 0x90, 0x00);
 929         cp_write(sd, 0xa5, 0x00);
 930         cp_write(sd, 0xa6, 0x00);
 931         cp_write(sd, 0xa7, 0x00);
 932         cp_write(sd, 0xab, 0x00);
 933         cp_write(sd, 0xac, 0x00);
 934
 935         switch (state->mode) {
 936         case ADV7842_MODE_COMP:
 937         case ADV7842_MODE_RGB:
 938                 err = find_and_set_predefined_video_timings(sd,
 939                                 0x01, adv7842_prim_mode_comp, timings);
 940                 if (err)
 941                         err = find_and_set_predefined_video_timings(sd,
 942                                         0x02, adv7842_prim_mode_gr, timings);
 943                 break;
 944         case ADV7842_MODE_HDMI:
 945                 err = find_and_set_predefined_video_timings(sd,
 946                                 0x05, adv7842_prim_mode_hdmi_comp, timings);
 947                 if (err)
 948                         err = find_and_set_predefined_video_timings(sd,
 949                                         0x06, adv7842_prim_mode_hdmi_gr, timings);
 950                 break;
 951         default:
 952                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
 953                                 __func__, state->mode);
 954                 err = -1;
 955                 break;
 956         }
 957
 958
 959         return err;
 960 }
 961
 962 static void configure_custom_video_timings(struct v4l2_subdev *sd,
 963                 const struct v4l2_bt_timings *bt)
 964 {
 965         struct adv7842_state *state = to_state(sd);
 966         struct i2c_client *client = v4l2_get_subdevdata(sd);
 967         u32 width = htotal(bt);
 968         u32 height = vtotal(bt);
 969         u16 cp_start_sav = bt->hsync + bt->hbackporch - 4;
 970         u16 cp_start_eav = width - bt->hfrontporch;
 971         u16 cp_start_vbi = height - bt->vfrontporch + 1;
 972         u16 cp_end_vbi = bt->vsync + bt->vbackporch + 1;
 973         u16 ch1_fr_ll = (((u32)bt->pixelclock / 100) > 0) ?
 974                 ((width * (ADV7842_fsc / 100)) / ((u32)bt->pixelclock / 100)) : 0;
 975         const u8 pll[2] = {
 976                 0xc0 | ((width >> 8) & 0x1f),
 977                 width & 0xff
 978         };
 979
 980         v4l2_dbg(2, debug, sd, "%s\n", __func__);
 981
 982         switch (state->mode) {
 983         case ADV7842_MODE_COMP:
 984         case ADV7842_MODE_RGB:
 985                 /* auto graphics */
 986                 io_write(sd, 0x00, 0x07); /* video std */
 987                 io_write(sd, 0x01, 0x02); /* prim mode */
 988                 /* enable embedded syncs for auto graphics mode */
 989                 cp_write_and_or(sd, 0x81, 0xef, 0x10);
 990
 991                 /* Should only be set in auto-graphics mode [REF_02, p. 91-92] */
 992                 /* setup PLL_DIV_MAN_EN and PLL_DIV_RATIO */
 993                 /* IO-map reg. 0x16 and 0x17 should be written in sequence */
 994                 if (adv_smbus_write_i2c_block_data(client, 0x16, 2, pll)) {
 995                         v4l2_err(sd, "writing to reg 0x16 and 0x17 failed\n");
 996                         break;
 997                 }
 998
 999                 /* active video - horizontal timing */
1000                 cp_write(sd, 0x26, (cp_start_sav >> 8) & 0xf);
1001                 cp_write(sd, 0x27, (cp_start_sav & 0xff));
1002                 cp_write(sd, 0x28, (cp_start_eav >> 8) & 0xf);
1003                 cp_write(sd, 0x29, (cp_start_eav & 0xff));
1004
1005                 /* active video - vertical timing */
1006                 cp_write(sd, 0xa5, (cp_start_vbi >> 4) & 0xff);
1007                 cp_write(sd, 0xa6, ((cp_start_vbi & 0xf) << 4) |
1008                                         ((cp_end_vbi >> 8) & 0xf));
1009                 cp_write(sd, 0xa7, cp_end_vbi & 0xff);
1010                 break;
1011         case ADV7842_MODE_HDMI:
1012                 /* set default prim_mode/vid_std for HDMI
1013                    according to [REF_03, c. 4.2] */
1014                 io_write(sd, 0x00, 0x02); /* video std */
1015                 io_write(sd, 0x01, 0x06); /* prim mode */
1016                 break;
1017         default:
1018                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1019                                 __func__, state->mode);
1020                 break;
1021         }
1022
1023         cp_write(sd, 0x8f, (ch1_fr_ll >> 8) & 0x7);
1024         cp_write(sd, 0x90, ch1_fr_ll & 0xff);
1025         cp_write(sd, 0xab, (height >> 4) & 0xff);
1026         cp_write(sd, 0xac, (height & 0x0f) << 4);
1027 }
1028
1029 static void adv7842_set_offset(struct v4l2_subdev *sd, bool auto_offset, u16 offset_a, u16 offset_b, u16 offset_c)
1030 {
1031         struct adv7842_state *state = to_state(sd);
1032         u8 offset_buf[4];
1033
1034         if (auto_offset) {
1035                 offset_a = 0x3ff;
1036                 offset_b = 0x3ff;
1037                 offset_c = 0x3ff;
1038         }
1039
1040         v4l2_dbg(2, debug, sd, "%s: %s offset: a = 0x%x, b = 0x%x, c = 0x%x\n",
1041                  __func__, auto_offset ? "Auto" : "Manual",
1042                  offset_a, offset_b, offset_c);
1043
1044         offset_buf[0]= (cp_read(sd, 0x77) & 0xc0) | ((offset_a & 0x3f0) >> 4);
1045         offset_buf[1] = ((offset_a & 0x00f) << 4) | ((offset_b & 0x3c0) >> 6);
1046         offset_buf[2] = ((offset_b & 0x03f) << 2) | ((offset_c & 0x300) >> 8);
1047         offset_buf[3] = offset_c & 0x0ff;
1048
1049         /* Registers must be written in this order with no i2c access in between */
1050         if (adv_smbus_write_i2c_block_data(state->i2c_cp, 0x77, 4, offset_buf))
1051                 v4l2_err(sd, "%s: i2c error writing to CP reg 0x77, 0x78, 0x79, 0x7a\n", __func__);
1052 }
1053
1054 static void adv7842_set_gain(struct v4l2_subdev *sd, bool auto_gain, u16 gain_a, u16 gain_b, u16 gain_c)
1055 {
1056         struct adv7842_state *state = to_state(sd);
1057         u8 gain_buf[4];
1058         u8 gain_man = 1;
1059         u8 agc_mode_man = 1;
1060
1061         if (auto_gain) {
1062                 gain_man = 0;
1063                 agc_mode_man = 0;
1064                 gain_a = 0x100;
1065                 gain_b = 0x100;
1066                 gain_c = 0x100;
1067         }
1068
1069         v4l2_dbg(2, debug, sd, "%s: %s gain: a = 0x%x, b = 0x%x, c = 0x%x\n",
1070                  __func__, auto_gain ? "Auto" : "Manual",
1071                  gain_a, gain_b, gain_c);
1072
1073         gain_buf[0] = ((gain_man << 7) | (agc_mode_man << 6) | ((gain_a & 0x3f0) >> 4));
1074         gain_buf[1] = (((gain_a & 0x00f) << 4) | ((gain_b & 0x3c0) >> 6));
1075         gain_buf[2] = (((gain_b & 0x03f) << 2) | ((gain_c & 0x300) >> 8));
1076         gain_buf[3] = ((gain_c & 0x0ff));
1077
1078         /* Registers must be written in this order with no i2c access in between */
1079         if (adv_smbus_write_i2c_block_data(state->i2c_cp, 0x73, 4, gain_buf))
1080                 v4l2_err(sd, "%s: i2c error writing to CP reg 0x73, 0x74, 0x75, 0x76\n", __func__);
1081 }
1082
1083 static void set_rgb_quantization_range(struct v4l2_subdev *sd)
1084 {
1085         struct adv7842_state *state = to_state(sd);
1086         bool rgb_output = io_read(sd, 0x02) & 0x02;
1087         bool hdmi_signal = hdmi_read(sd, 0x05) & 0x80;
1088
1089         v4l2_dbg(2, debug, sd, "%s: RGB quantization range: %d, RGB out: %d, HDMI: %d\n",
1090                         __func__, state->rgb_quantization_range,
1091                         rgb_output, hdmi_signal);
1092
1093         adv7842_set_gain(sd, true, 0x0, 0x0, 0x0);
1094         adv7842_set_offset(sd, true, 0x0, 0x0, 0x0);
1095
1096         switch (state->rgb_quantization_range) {
1097         case V4L2_DV_RGB_RANGE_AUTO:
1098                 if (state->mode == ADV7842_MODE_RGB) {
1099                         /* Receiving analog RGB signal
1100                          * Set RGB full range (0-255) */
1101                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1102                         break;
1103                 }
1104
1105                 if (state->mode == ADV7842_MODE_COMP) {
1106                         /* Receiving analog YPbPr signal
1107                          * Set automode */
1108                         io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1109                         break;
1110                 }
1111
1112                 if (hdmi_signal) {
1113                         /* Receiving HDMI signal
1114                          * Set automode */
1115                         io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1116                         break;
1117                 }
1118
1119                 /* Receiving DVI-D signal
1120                  * ADV7842 selects RGB limited range regardless of
1121                  * input format (CE/IT) in automatic mode */
1122                 if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
1123                         /* RGB limited range (16-235) */
1124                         io_write_and_or(sd, 0x02, 0x0f, 0x00);
1125                 } else {
1126                         /* RGB full range (0-255) */
1127                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1128
1129                         if (is_digital_input(sd) && rgb_output) {
1130                                 adv7842_set_offset(sd, false, 0x40, 0x40, 0x40);
1131                         } else {
1132                                 adv7842_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
1133                                 adv7842_set_offset(sd, false, 0x70, 0x70, 0x70);
1134                         }
1135                 }
1136                 break;
1137         case V4L2_DV_RGB_RANGE_LIMITED:
1138                 if (state->mode == ADV7842_MODE_COMP) {
1139                         /* YCrCb limited range (16-235) */
1140                         io_write_and_or(sd, 0x02, 0x0f, 0x20);
1141                         break;
1142                 }
1143
1144                 /* RGB limited range (16-235) */
1145                 io_write_and_or(sd, 0x02, 0x0f, 0x00);
1146
1147                 break;
1148         case V4L2_DV_RGB_RANGE_FULL:
1149                 if (state->mode == ADV7842_MODE_COMP) {
1150                         /* YCrCb full range (0-255) */
1151                         io_write_and_or(sd, 0x02, 0x0f, 0x60);
1152                         break;
1153                 }
1154
1155                 /* RGB full range (0-255) */
1156                 io_write_and_or(sd, 0x02, 0x0f, 0x10);
1157
1158                 if (is_analog_input(sd) || hdmi_signal)
1159                         break;
1160
1161                 /* Adjust gain/offset for DVI-D signals only */
1162                 if (rgb_output) {
1163                         adv7842_set_offset(sd, false, 0x40, 0x40, 0x40);
1164                 } else {
1165                         adv7842_set_gain(sd, false, 0xe0, 0xe0, 0xe0);
1166                         adv7842_set_offset(sd, false, 0x70, 0x70, 0x70);
1167                 }
1168                 break;
1169         }
1170 }
1171
1172 static int adv7842_s_ctrl(struct v4l2_ctrl *ctrl)
1173 {
1174         struct v4l2_subdev *sd = to_sd(ctrl);
1175         struct adv7842_state *state = to_state(sd);
1176
1177         /* TODO SDP ctrls
1178            contrast/brightness/hue/free run is acting a bit strange,
1179            not sure if sdp csc is correct.
1180          */
1181         switch (ctrl->id) {
1182         /* standard ctrls */
1183         case V4L2_CID_BRIGHTNESS:
1184                 cp_write(sd, 0x3c, ctrl->val);
1185                 sdp_write(sd, 0x14, ctrl->val);
1186                 /* ignore lsb sdp 0x17[3:2] */
1187                 return 0;
1188         case V4L2_CID_CONTRAST:
1189                 cp_write(sd, 0x3a, ctrl->val);
1190                 sdp_write(sd, 0x13, ctrl->val);
1191                 /* ignore lsb sdp 0x17[1:0] */
1192                 return 0;
1193         case V4L2_CID_SATURATION:
1194                 cp_write(sd, 0x3b, ctrl->val);
1195                 sdp_write(sd, 0x15, ctrl->val);
1196                 /* ignore lsb sdp 0x17[5:4] */
1197                 return 0;
1198         case V4L2_CID_HUE:
1199                 cp_write(sd, 0x3d, ctrl->val);
1200                 sdp_write(sd, 0x16, ctrl->val);
1201                 /* ignore lsb sdp 0x17[7:6] */
1202                 return 0;
1203                 /* custom ctrls */
1204         case V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE:
1205                 afe_write(sd, 0xc8, ctrl->val);
1206                 return 0;
1207         case V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL:
1208                 cp_write_and_or(sd, 0xbf, ~0x04, (ctrl->val << 2));
1209                 sdp_write_and_or(sd, 0xdd, ~0x04, (ctrl->val << 2));
1210                 return 0;
1211         case V4L2_CID_ADV_RX_FREE_RUN_COLOR: {
1212                 u8 R = (ctrl->val & 0xff0000) >> 16;
1213                 u8 G = (ctrl->val & 0x00ff00) >> 8;
1214                 u8 B = (ctrl->val & 0x0000ff);
1215                 /* RGB -> YUV, numerical approximation */
1216                 int Y = 66 * R + 129 * G + 25 * B;
1217                 int U = -38 * R - 74 * G + 112 * B;
1218                 int V = 112 * R - 94 * G - 18 * B;
1219
1220                 /* Scale down to 8 bits with rounding */
1221                 Y = (Y + 128) >> 8;
1222                 U = (U + 128) >> 8;
1223                 V = (V + 128) >> 8;
1224                 /* make U,V positive */
1225                 Y += 16;
1226                 U += 128;
1227                 V += 128;
1228
1229                 v4l2_dbg(1, debug, sd, "R %x, G %x, B %x\n", R, G, B);
1230                 v4l2_dbg(1, debug, sd, "Y %x, U %x, V %x\n", Y, U, V);
1231
1232                 /* CP */
1233                 cp_write(sd, 0xc1, R);
1234                 cp_write(sd, 0xc0, G);
1235                 cp_write(sd, 0xc2, B);
1236                 /* SDP */
1237                 sdp_write(sd, 0xde, Y);
1238                 sdp_write(sd, 0xdf, (V & 0xf0) | ((U >> 4) & 0x0f));
1239                 return 0;
1240         }
1241         case V4L2_CID_DV_RX_RGB_RANGE:
1242                 state->rgb_quantization_range = ctrl->val;
1243                 set_rgb_quantization_range(sd);
1244                 return 0;
1245         }
1246         return -EINVAL;
1247 }
1248
1249 static inline bool no_power(struct v4l2_subdev *sd)
1250 {
1251         return io_read(sd, 0x0c) & 0x24;
1252 }
1253
1254 static inline bool no_cp_signal(struct v4l2_subdev *sd)
1255 {
1256         return ((cp_read(sd, 0xb5) & 0xd0) != 0xd0) || !(cp_read(sd, 0xb1) & 0x80);
1257 }
1258
1259 static inline bool is_hdmi(struct v4l2_subdev *sd)
1260 {
1261         return hdmi_read(sd, 0x05) & 0x80;
1262 }
1263
1264 static int adv7842_g_input_status(struct v4l2_subdev *sd, u32 *status)
1265 {
1266         struct adv7842_state *state = to_state(sd);
1267
1268         *status = 0;
1269
1270         if (io_read(sd, 0x0c) & 0x24)
1271                 *status |= V4L2_IN_ST_NO_POWER;
1272
1273         if (state->mode == ADV7842_MODE_SDP) {
1274                 /* status from SDP block */
1275                 if (!(sdp_read(sd, 0x5A) & 0x01))
1276                         *status |= V4L2_IN_ST_NO_SIGNAL;
1277
1278                 v4l2_dbg(1, debug, sd, "%s: SDP status = 0x%x\n",
1279                                 __func__, *status);
1280                 return 0;
1281         }
1282         /* status from CP block */
1283         if ((cp_read(sd, 0xb5) & 0xd0) != 0xd0 ||
1284                         !(cp_read(sd, 0xb1) & 0x80))
1285                 /* TODO channel 2 */
1286                 *status |= V4L2_IN_ST_NO_SIGNAL;
1287
1288         if (is_digital_input(sd) && ((io_read(sd, 0x74) & 0x03) != 0x03))
1289                 *status |= V4L2_IN_ST_NO_SIGNAL;
1290
1291         v4l2_dbg(1, debug, sd, "%s: CP status = 0x%x\n",
1292                         __func__, *status);
1293
1294         return 0;
1295 }
1296
1297 struct stdi_readback {
1298         u16 bl, lcf, lcvs;
1299         u8 hs_pol, vs_pol;
1300         bool interlaced;
1301 };
1302
1303 static int stdi2dv_timings(struct v4l2_subdev *sd,
1304                 struct stdi_readback *stdi,
1305                 struct v4l2_dv_timings *timings)
1306 {
1307         struct adv7842_state *state = to_state(sd);
1308         u32 hfreq = (ADV7842_fsc * 8) / stdi->bl;
1309         u32 pix_clk;
1310         int i;
1311
1312         for (i = 0; v4l2_dv_timings_presets[i].bt.width; i++) {
1313                 const struct v4l2_bt_timings *bt = &v4l2_dv_timings_presets[i].bt;
1314
1315                 if (!v4l2_valid_dv_timings(&v4l2_dv_timings_presets[i],
1316                                            adv7842_get_dv_timings_cap(sd),
1317                                            adv7842_check_dv_timings, NULL))
1318                         continue;
1319                 if (vtotal(bt) != stdi->lcf + 1)
1320                         continue;
1321                 if (bt->vsync != stdi->lcvs)
1322                         continue;
1323
1324                 pix_clk = hfreq * htotal(bt);
1325
1326                 if ((pix_clk < bt->pixelclock + 1000000) &&
1327                     (pix_clk > bt->pixelclock - 1000000)) {
1328                         *timings = v4l2_dv_timings_presets[i];
1329                         return 0;
1330                 }
1331         }
1332
1333         if (v4l2_detect_cvt(stdi->lcf + 1, hfreq, stdi->lcvs,
1334                         (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
1335                         (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
1336                             timings))
1337                 return 0;
1338         if (v4l2_detect_gtf(stdi->lcf + 1, hfreq, stdi->lcvs,
1339                         (stdi->hs_pol == '+' ? V4L2_DV_HSYNC_POS_POL : 0) |
1340                         (stdi->vs_pol == '+' ? V4L2_DV_VSYNC_POS_POL : 0),
1341                             state->aspect_ratio, timings))
1342                 return 0;
1343
1344         v4l2_dbg(2, debug, sd,
1345                 "%s: No format candidate found for lcvs = %d, lcf=%d, bl = %d, %chsync, %cvsync\n",
1346                 __func__, stdi->lcvs, stdi->lcf, stdi->bl,
1347                 stdi->hs_pol, stdi->vs_pol);
1348         return -1;
1349 }
1350
1351 static int read_stdi(struct v4l2_subdev *sd, struct stdi_readback *stdi)
1352 {
1353         u32 status;
1354
1355         adv7842_g_input_status(sd, &status);
1356         if (status & V4L2_IN_ST_NO_SIGNAL) {
1357                 v4l2_dbg(2, debug, sd, "%s: no signal\n", __func__);
1358                 return -ENOLINK;
1359         }
1360
1361         stdi->bl = ((cp_read(sd, 0xb1) & 0x3f) << 8) | cp_read(sd, 0xb2);
1362         stdi->lcf = ((cp_read(sd, 0xb3) & 0x7) << 8) | cp_read(sd, 0xb4);
1363         stdi->lcvs = cp_read(sd, 0xb3) >> 3;
1364
1365         if ((cp_read(sd, 0xb5) & 0x80) && ((cp_read(sd, 0xb5) & 0x03) == 0x01)) {
1366                 stdi->hs_pol = ((cp_read(sd, 0xb5) & 0x10) ?
1367                         ((cp_read(sd, 0xb5) & 0x08) ? '+' : '-') : 'x');
1368                 stdi->vs_pol = ((cp_read(sd, 0xb5) & 0x40) ?
1369                         ((cp_read(sd, 0xb5) & 0x20) ? '+' : '-') : 'x');
1370         } else {
1371                 stdi->hs_pol = 'x';
1372                 stdi->vs_pol = 'x';
1373         }
1374         stdi->interlaced = (cp_read(sd, 0xb1) & 0x40) ? true : false;
1375
1376         if (stdi->lcf < 239 || stdi->bl < 8 || stdi->bl == 0x3fff) {
1377                 v4l2_dbg(2, debug, sd, "%s: invalid signal\n", __func__);
1378                 return -ENOLINK;
1379         }
1380
1381         v4l2_dbg(2, debug, sd,
1382                 "%s: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, %chsync, %cvsync, %s\n",
1383                  __func__, stdi->lcf, stdi->bl, stdi->lcvs,
1384                  stdi->hs_pol, stdi->vs_pol,
1385                  stdi->interlaced ? "interlaced" : "progressive");
1386
1387         return 0;
1388 }
1389
1390 static int adv7842_enum_dv_timings(struct v4l2_subdev *sd,
1391                                    struct v4l2_enum_dv_timings *timings)
1392 {
1393         if (timings->pad != 0)
1394                 return -EINVAL;
1395
1396         return v4l2_enum_dv_timings_cap(timings,
1397                 adv7842_get_dv_timings_cap(sd), adv7842_check_dv_timings, NULL);
1398 }
1399
1400 static int adv7842_dv_timings_cap(struct v4l2_subdev *sd,
1401                                   struct v4l2_dv_timings_cap *cap)
1402 {
1403         if (cap->pad != 0)
1404                 return -EINVAL;
1405
1406         *cap = *adv7842_get_dv_timings_cap(sd);
1407         return 0;
1408 }
1409
1410 /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
1411    if the format is listed in adv7842_timings[] */
1412 static void adv7842_fill_optional_dv_timings_fields(struct v4l2_subdev *sd,
1413                 struct v4l2_dv_timings *timings)
1414 {
1415         v4l2_find_dv_timings_cap(timings, adv7842_get_dv_timings_cap(sd),
1416                         is_digital_input(sd) ? 250000 : 1000000,
1417                         adv7842_check_dv_timings, NULL);
1418 }
1419
1420 static int adv7842_query_dv_timings(struct v4l2_subdev *sd,
1421                                     struct v4l2_dv_timings *timings)
1422 {
1423         struct adv7842_state *state = to_state(sd);
1424         struct v4l2_bt_timings *bt = &timings->bt;
1425         struct stdi_readback stdi = { 0 };
1426
1427         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1428
1429         memset(timings, 0, sizeof(struct v4l2_dv_timings));
1430
1431         /* SDP block */
1432         if (state->mode == ADV7842_MODE_SDP)
1433                 return -ENODATA;
1434
1435         /* read STDI */
1436         if (read_stdi(sd, &stdi)) {
1437                 state->restart_stdi_once = true;
1438                 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
1439                 return -ENOLINK;
1440         }
1441         bt->interlaced = stdi.interlaced ?
1442                 V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE;
1443
1444         if (is_digital_input(sd)) {
1445                 uint32_t freq;
1446
1447                 timings->type = V4L2_DV_BT_656_1120;
1448
1449                 bt->width = (hdmi_read(sd, 0x07) & 0x0f) * 256 + hdmi_read(sd, 0x08);
1450                 bt->height = (hdmi_read(sd, 0x09) & 0x0f) * 256 + hdmi_read(sd, 0x0a);
1451                 freq = ((hdmi_read(sd, 0x51) << 1) + (hdmi_read(sd, 0x52) >> 7)) * 1000000;
1452                 freq += ((hdmi_read(sd, 0x52) & 0x7f) * 7813);
1453                 if (is_hdmi(sd)) {
1454                         /* adjust for deep color mode */
1455                         freq = freq * 8 / (((hdmi_read(sd, 0x0b) & 0xc0) >> 6) * 2 + 8);
1456                 }
1457                 bt->pixelclock = freq;
1458                 bt->hfrontporch = (hdmi_read(sd, 0x20) & 0x03) * 256 +
1459                         hdmi_read(sd, 0x21);
1460                 bt->hsync = (hdmi_read(sd, 0x22) & 0x03) * 256 +
1461                         hdmi_read(sd, 0x23);
1462                 bt->hbackporch = (hdmi_read(sd, 0x24) & 0x03) * 256 +
1463                         hdmi_read(sd, 0x25);
1464                 bt->vfrontporch = ((hdmi_read(sd, 0x2a) & 0x1f) * 256 +
1465                         hdmi_read(sd, 0x2b)) / 2;
1466                 bt->vsync = ((hdmi_read(sd, 0x2e) & 0x1f) * 256 +
1467                         hdmi_read(sd, 0x2f)) / 2;
1468                 bt->vbackporch = ((hdmi_read(sd, 0x32) & 0x1f) * 256 +
1469                         hdmi_read(sd, 0x33)) / 2;
1470                 bt->polarities = ((hdmi_read(sd, 0x05) & 0x10) ? V4L2_DV_VSYNC_POS_POL : 0) |
1471                         ((hdmi_read(sd, 0x05) & 0x20) ? V4L2_DV_HSYNC_POS_POL : 0);
1472                 if (bt->interlaced == V4L2_DV_INTERLACED) {
1473                         bt->height += (hdmi_read(sd, 0x0b) & 0x0f) * 256 +
1474                                         hdmi_read(sd, 0x0c);
1475                         bt->il_vfrontporch = ((hdmi_read(sd, 0x2c) & 0x1f) * 256 +
1476                                         hdmi_read(sd, 0x2d)) / 2;
1477                         bt->il_vsync = ((hdmi_read(sd, 0x30) & 0x1f) * 256 +
1478                                         hdmi_read(sd, 0x31)) / 2;
1479                         bt->il_vbackporch = ((hdmi_read(sd, 0x34) & 0x1f) * 256 +
1480                                         hdmi_read(sd, 0x35)) / 2;
1481                 }
1482                 adv7842_fill_optional_dv_timings_fields(sd, timings);
1483         } else {
1484                 /* find format
1485                  * Since LCVS values are inaccurate [REF_03, p. 339-340],
1486                  * stdi2dv_timings() is called with lcvs +-1 if the first attempt fails.
1487                  */
1488                 if (!stdi2dv_timings(sd, &stdi, timings))
1489                         goto found;
1490                 stdi.lcvs += 1;
1491                 v4l2_dbg(1, debug, sd, "%s: lcvs + 1 = %d\n", __func__, stdi.lcvs);
1492                 if (!stdi2dv_timings(sd, &stdi, timings))
1493                         goto found;
1494                 stdi.lcvs -= 2;
1495                 v4l2_dbg(1, debug, sd, "%s: lcvs - 1 = %d\n", __func__, stdi.lcvs);
1496                 if (stdi2dv_timings(sd, &stdi, timings)) {
1497                         /*
1498                          * The STDI block may measure wrong values, especially
1499                          * for lcvs and lcf. If the driver can not find any
1500                          * valid timing, the STDI block is restarted to measure
1501                          * the video timings again. The function will return an
1502                          * error, but the restart of STDI will generate a new
1503                          * STDI interrupt and the format detection process will
1504                          * restart.
1505                          */
1506                         if (state->restart_stdi_once) {
1507                                 v4l2_dbg(1, debug, sd, "%s: restart STDI\n", __func__);
1508                                 /* TODO restart STDI for Sync Channel 2 */
1509                                 /* enter one-shot mode */
1510                                 cp_write_and_or(sd, 0x86, 0xf9, 0x00);
1511                                 /* trigger STDI restart */
1512                                 cp_write_and_or(sd, 0x86, 0xf9, 0x04);
1513                                 /* reset to continuous mode */
1514                                 cp_write_and_or(sd, 0x86, 0xf9, 0x02);
1515                                 state->restart_stdi_once = false;
1516                                 return -ENOLINK;
1517                         }
1518                         v4l2_dbg(1, debug, sd, "%s: format not supported\n", __func__);
1519                         return -ERANGE;
1520                 }
1521                 state->restart_stdi_once = true;
1522         }
1523 found:
1524
1525         if (debug > 1)
1526                 v4l2_print_dv_timings(sd->name, "adv7842_query_dv_timings:",
1527                                 timings, true);
1528         return 0;
1529 }
1530
1531 static int adv7842_s_dv_timings(struct v4l2_subdev *sd,
1532                                 struct v4l2_dv_timings *timings)
1533 {
1534         struct adv7842_state *state = to_state(sd);
1535         struct v4l2_bt_timings *bt;
1536         int err;
1537
1538         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
1539
1540         if (state->mode == ADV7842_MODE_SDP)
1541                 return -ENODATA;
1542
1543         if (v4l2_match_dv_timings(&state->timings, timings, 0)) {
1544                 v4l2_dbg(1, debug, sd, "%s: no change\n", __func__);
1545                 return 0;
1546         }
1547
1548         bt = &timings->bt;
1549
1550         if (!v4l2_valid_dv_timings(timings, adv7842_get_dv_timings_cap(sd),
1551                                    adv7842_check_dv_timings, NULL))
1552                 return -ERANGE;
1553
1554         adv7842_fill_optional_dv_timings_fields(sd, timings);
1555
1556         state->timings = *timings;
1557
1558         cp_write(sd, 0x91, bt->interlaced ? 0x40 : 0x00);
1559
1560         /* Use prim_mode and vid_std when available */
1561         err = configure_predefined_video_timings(sd, timings);
1562         if (err) {
1563                 /* custom settings when the video format
1564                   does not have prim_mode/vid_std */
1565                 configure_custom_video_timings(sd, bt);
1566         }
1567
1568         set_rgb_quantization_range(sd);
1569
1570
1571         if (debug > 1)
1572                 v4l2_print_dv_timings(sd->name, "adv7842_s_dv_timings: ",
1573                                       timings, true);
1574         return 0;
1575 }
1576
1577 static int adv7842_g_dv_timings(struct v4l2_subdev *sd,
1578                                 struct v4l2_dv_timings *timings)
1579 {
1580         struct adv7842_state *state = to_state(sd);
1581
1582         if (state->mode == ADV7842_MODE_SDP)
1583                 return -ENODATA;
1584         *timings = state->timings;
1585         return 0;
1586 }
1587
1588 static void enable_input(struct v4l2_subdev *sd)
1589 {
1590         struct adv7842_state *state = to_state(sd);
1591
1592         set_rgb_quantization_range(sd);
1593         switch (state->mode) {
1594         case ADV7842_MODE_SDP:
1595         case ADV7842_MODE_COMP:
1596         case ADV7842_MODE_RGB:
1597                 io_write(sd, 0x15, 0xb0);   /* Disable Tristate of Pins (no audio) */
1598                 break;
1599         case ADV7842_MODE_HDMI:
1600                 hdmi_write(sd, 0x01, 0x00); /* Enable HDMI clock terminators */
1601                 io_write(sd, 0x15, 0xa0);   /* Disable Tristate of Pins */
1602                 hdmi_write_and_or(sd, 0x1a, 0xef, 0x00); /* Unmute audio */
1603                 break;
1604         default:
1605                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1606                          __func__, state->mode);
1607                 break;
1608         }
1609 }
1610
1611 static void disable_input(struct v4l2_subdev *sd)
1612 {
1613         hdmi_write_and_or(sd, 0x1a, 0xef, 0x10); /* Mute audio [REF_01, c. 2.2.2] */
1614         msleep(16); /* 512 samples with >= 32 kHz sample rate [REF_03, c. 8.29] */
1615         io_write(sd, 0x15, 0xbe);   /* Tristate all outputs from video core */
1616         hdmi_write(sd, 0x01, 0x78); /* Disable HDMI clock terminators */
1617 }
1618
1619 static void sdp_csc_coeff(struct v4l2_subdev *sd,
1620                           const struct adv7842_sdp_csc_coeff *c)
1621 {
1622         /* csc auto/manual */
1623         sdp_io_write_and_or(sd, 0xe0, 0xbf, c->manual ? 0x00 : 0x40);
1624
1625         if (!c->manual)
1626                 return;
1627
1628         /* csc scaling */
1629         sdp_io_write_and_or(sd, 0xe0, 0x7f, c->scaling == 2 ? 0x80 : 0x00);
1630
1631         /* A coeff */
1632         sdp_io_write_and_or(sd, 0xe0, 0xe0, c->A1 >> 8);
1633         sdp_io_write(sd, 0xe1, c->A1);
1634         sdp_io_write_and_or(sd, 0xe2, 0xe0, c->A2 >> 8);
1635         sdp_io_write(sd, 0xe3, c->A2);
1636         sdp_io_write_and_or(sd, 0xe4, 0xe0, c->A3 >> 8);
1637         sdp_io_write(sd, 0xe5, c->A3);
1638
1639         /* A scale */
1640         sdp_io_write_and_or(sd, 0xe6, 0x80, c->A4 >> 8);
1641         sdp_io_write(sd, 0xe7, c->A4);
1642
1643         /* B coeff */
1644         sdp_io_write_and_or(sd, 0xe8, 0xe0, c->B1 >> 8);
1645         sdp_io_write(sd, 0xe9, c->B1);
1646         sdp_io_write_and_or(sd, 0xea, 0xe0, c->B2 >> 8);
1647         sdp_io_write(sd, 0xeb, c->B2);
1648         sdp_io_write_and_or(sd, 0xec, 0xe0, c->B3 >> 8);
1649         sdp_io_write(sd, 0xed, c->B3);
1650
1651         /* B scale */
1652         sdp_io_write_and_or(sd, 0xee, 0x80, c->B4 >> 8);
1653         sdp_io_write(sd, 0xef, c->B4);
1654
1655         /* C coeff */
1656         sdp_io_write_and_or(sd, 0xf0, 0xe0, c->C1 >> 8);
1657         sdp_io_write(sd, 0xf1, c->C1);
1658         sdp_io_write_and_or(sd, 0xf2, 0xe0, c->C2 >> 8);
1659         sdp_io_write(sd, 0xf3, c->C2);
1660         sdp_io_write_and_or(sd, 0xf4, 0xe0, c->C3 >> 8);
1661         sdp_io_write(sd, 0xf5, c->C3);
1662
1663         /* C scale */
1664         sdp_io_write_and_or(sd, 0xf6, 0x80, c->C4 >> 8);
1665         sdp_io_write(sd, 0xf7, c->C4);
1666 }
1667
1668 static void select_input(struct v4l2_subdev *sd,
1669                          enum adv7842_vid_std_select vid_std_select)
1670 {
1671         struct adv7842_state *state = to_state(sd);
1672
1673         switch (state->mode) {
1674         case ADV7842_MODE_SDP:
1675                 io_write(sd, 0x00, vid_std_select); /* video std: CVBS or YC mode */
1676                 io_write(sd, 0x01, 0); /* prim mode */
1677                 /* enable embedded syncs for auto graphics mode */
1678                 cp_write_and_or(sd, 0x81, 0xef, 0x10);
1679
1680                 afe_write(sd, 0x00, 0x00); /* power up ADC */
1681                 afe_write(sd, 0xc8, 0x00); /* phase control */
1682
1683                 io_write(sd, 0xdd, 0x90); /* Manual 2x output clock */
1684                 /* script says register 0xde, which don't exist in manual */
1685
1686                 /* Manual analog input muxing mode, CVBS (6.4)*/
1687                 afe_write_and_or(sd, 0x02, 0x7f, 0x80);
1688                 if (vid_std_select == ADV7842_SDP_VID_STD_CVBS_SD_4x1) {
1689                         afe_write(sd, 0x03, 0xa0); /* ADC0 to AIN10 (CVBS), ADC1 N/C*/
1690                         afe_write(sd, 0x04, 0x00); /* ADC2 N/C,ADC3 N/C*/
1691                 } else {
1692                         afe_write(sd, 0x03, 0xa0); /* ADC0 to AIN10 (CVBS), ADC1 N/C*/
1693                         afe_write(sd, 0x04, 0xc0); /* ADC2 to AIN12, ADC3 N/C*/
1694                 }
1695                 afe_write(sd, 0x0c, 0x1f); /* ADI recommend write */
1696                 afe_write(sd, 0x12, 0x63); /* ADI recommend write */
1697
1698                 sdp_io_write(sd, 0xb2, 0x60); /* Disable AV codes */
1699                 sdp_io_write(sd, 0xc8, 0xe3); /* Disable Ancillary data */
1700
1701                 /* SDP recommended settings */
1702                 sdp_write(sd, 0x00, 0x3F); /* Autodetect PAL NTSC (not SECAM) */
1703                 sdp_write(sd, 0x01, 0x00); /* Pedestal Off */
1704
1705                 sdp_write(sd, 0x03, 0xE4); /* Manual VCR Gain Luma 0x40B */
1706                 sdp_write(sd, 0x04, 0x0B); /* Manual Luma setting */
1707                 sdp_write(sd, 0x05, 0xC3); /* Manual Chroma setting 0x3FE */
1708                 sdp_write(sd, 0x06, 0xFE); /* Manual Chroma setting */
1709                 sdp_write(sd, 0x12, 0x0D); /* Frame TBC,I_P, 3D comb enabled */
1710                 sdp_write(sd, 0xA7, 0x00); /* ADI Recommended Write */
1711                 sdp_io_write(sd, 0xB0, 0x00); /* Disable H and v blanking */
1712
1713                 /* deinterlacer enabled and 3D comb */
1714                 sdp_write_and_or(sd, 0x12, 0xf6, 0x09);
1715
1716                 break;
1717
1718         case ADV7842_MODE_COMP:
1719         case ADV7842_MODE_RGB:
1720                 /* Automatic analog input muxing mode */
1721                 afe_write_and_or(sd, 0x02, 0x7f, 0x00);
1722                 /* set mode and select free run resolution */
1723                 io_write(sd, 0x00, vid_std_select); /* video std */
1724                 io_write(sd, 0x01, 0x02); /* prim mode */
1725                 cp_write_and_or(sd, 0x81, 0xef, 0x10); /* enable embedded syncs
1726                                                           for auto graphics mode */
1727
1728                 afe_write(sd, 0x00, 0x00); /* power up ADC */
1729                 afe_write(sd, 0xc8, 0x00); /* phase control */
1730                 if (state->mode == ADV7842_MODE_COMP) {
1731                         /* force to YCrCb */
1732                         io_write_and_or(sd, 0x02, 0x0f, 0x60);
1733                 } else {
1734                         /* force to RGB */
1735                         io_write_and_or(sd, 0x02, 0x0f, 0x10);
1736                 }
1737
1738                 /* set ADI recommended settings for digitizer */
1739                 /* "ADV7842 Register Settings Recommendations
1740                  * (rev. 1.8, November 2010)" p. 9. */
1741                 afe_write(sd, 0x0c, 0x1f); /* ADC Range improvement */
1742                 afe_write(sd, 0x12, 0x63); /* ADC Range improvement */
1743
1744                 /* set to default gain for RGB */
1745                 cp_write(sd, 0x73, 0x10);
1746                 cp_write(sd, 0x74, 0x04);
1747                 cp_write(sd, 0x75, 0x01);
1748                 cp_write(sd, 0x76, 0x00);
1749
1750                 cp_write(sd, 0x3e, 0x04); /* CP core pre-gain control */
1751                 cp_write(sd, 0xc3, 0x39); /* CP coast control. Graphics mode */
1752                 cp_write(sd, 0x40, 0x5c); /* CP core pre-gain control. Graphics mode */
1753                 break;
1754
1755         case ADV7842_MODE_HDMI:
1756                 /* Automatic analog input muxing mode */
1757                 afe_write_and_or(sd, 0x02, 0x7f, 0x00);
1758                 /* set mode and select free run resolution */
1759                 if (state->hdmi_port_a)
1760                         hdmi_write(sd, 0x00, 0x02); /* select port A */
1761                 else
1762                         hdmi_write(sd, 0x00, 0x03); /* select port B */
1763                 io_write(sd, 0x00, vid_std_select); /* video std */
1764                 io_write(sd, 0x01, 5); /* prim mode */
1765                 cp_write_and_or(sd, 0x81, 0xef, 0x00); /* disable embedded syncs
1766                                                           for auto graphics mode */
1767
1768                 /* set ADI recommended settings for HDMI: */
1769                 /* "ADV7842 Register Settings Recommendations
1770                  * (rev. 1.8, November 2010)" p. 3. */
1771                 hdmi_write(sd, 0xc0, 0x00);
1772                 hdmi_write(sd, 0x0d, 0x34); /* ADI recommended write */
1773                 hdmi_write(sd, 0x3d, 0x10); /* ADI recommended write */
1774                 hdmi_write(sd, 0x44, 0x85); /* TMDS PLL optimization */
1775                 hdmi_write(sd, 0x46, 0x1f); /* ADI recommended write */
1776                 hdmi_write(sd, 0x57, 0xb6); /* TMDS PLL optimization */
1777                 hdmi_write(sd, 0x58, 0x03); /* TMDS PLL optimization */
1778                 hdmi_write(sd, 0x60, 0x88); /* TMDS PLL optimization */
1779                 hdmi_write(sd, 0x61, 0x88); /* TMDS PLL optimization */
1780                 hdmi_write(sd, 0x6c, 0x18); /* Disable ISRC clearing bit,
1781                                                Improve robustness */
1782                 hdmi_write(sd, 0x75, 0x10); /* DDC drive strength */
1783                 hdmi_write(sd, 0x85, 0x1f); /* equaliser */
1784                 hdmi_write(sd, 0x87, 0x70); /* ADI recommended write */
1785                 hdmi_write(sd, 0x89, 0x04); /* equaliser */
1786                 hdmi_write(sd, 0x8a, 0x1e); /* equaliser */
1787                 hdmi_write(sd, 0x93, 0x04); /* equaliser */
1788                 hdmi_write(sd, 0x94, 0x1e); /* equaliser */
1789                 hdmi_write(sd, 0x99, 0xa1); /* ADI recommended write */
1790                 hdmi_write(sd, 0x9b, 0x09); /* ADI recommended write */
1791                 hdmi_write(sd, 0x9d, 0x02); /* equaliser */
1792
1793                 afe_write(sd, 0x00, 0xff); /* power down ADC */
1794                 afe_write(sd, 0xc8, 0x40); /* phase control */
1795
1796                 /* set to default gain for HDMI */
1797                 cp_write(sd, 0x73, 0x10);
1798                 cp_write(sd, 0x74, 0x04);
1799                 cp_write(sd, 0x75, 0x01);
1800                 cp_write(sd, 0x76, 0x00);
1801
1802                 /* reset ADI recommended settings for digitizer */
1803                 /* "ADV7842 Register Settings Recommendations
1804                  * (rev. 2.5, June 2010)" p. 17. */
1805                 afe_write(sd, 0x12, 0xfb); /* ADC noise shaping filter controls */
1806                 afe_write(sd, 0x0c, 0x0d); /* CP core gain controls */
1807                 cp_write(sd, 0x3e, 0x00); /* CP core pre-gain control */
1808
1809                 /* CP coast control */
1810                 cp_write(sd, 0xc3, 0x33); /* Component mode */
1811
1812                 /* color space conversion, autodetect color space */
1813                 io_write_and_or(sd, 0x02, 0x0f, 0xf0);
1814                 break;
1815
1816         default:
1817                 v4l2_dbg(2, debug, sd, "%s: Unknown mode %d\n",
1818                          __func__, state->mode);
1819                 break;
1820         }
1821 }
1822
1823 static int adv7842_s_routing(struct v4l2_subdev *sd,
1824                 u32 input, u32 output, u32 config)
1825 {
1826         struct adv7842_state *state = to_state(sd);
1827
1828         v4l2_dbg(2, debug, sd, "%s: input %d\n", __func__, input);
1829
1830         switch (input) {
1831         case ADV7842_SELECT_HDMI_PORT_A:
1832                 state->mode = ADV7842_MODE_HDMI;
1833                 state->vid_std_select = ADV7842_HDMI_COMP_VID_STD_HD_1250P;
1834                 state->hdmi_port_a = true;
1835                 break;
1836         case ADV7842_SELECT_HDMI_PORT_B:
1837                 state->mode = ADV7842_MODE_HDMI;
1838                 state->vid_std_select = ADV7842_HDMI_COMP_VID_STD_HD_1250P;
1839                 state->hdmi_port_a = false;
1840                 break;
1841         case ADV7842_SELECT_VGA_COMP:
1842                 state->mode = ADV7842_MODE_COMP;
1843                 state->vid_std_select = ADV7842_RGB_VID_STD_AUTO_GRAPH_MODE;
1844                 break;
1845         case ADV7842_SELECT_VGA_RGB:
1846                 state->mode = ADV7842_MODE_RGB;
1847                 state->vid_std_select = ADV7842_RGB_VID_STD_AUTO_GRAPH_MODE;
1848                 break;
1849         case ADV7842_SELECT_SDP_CVBS:
1850                 state->mode = ADV7842_MODE_SDP;
1851                 state->vid_std_select = ADV7842_SDP_VID_STD_CVBS_SD_4x1;
1852                 break;
1853         case ADV7842_SELECT_SDP_YC:
1854                 state->mode = ADV7842_MODE_SDP;
1855                 state->vid_std_select = ADV7842_SDP_VID_STD_YC_SD4_x1;
1856                 break;
1857         default:
1858                 return -EINVAL;
1859         }
1860
1861         disable_input(sd);
1862         select_input(sd, state->vid_std_select);
1863         enable_input(sd);
1864
1865         v4l2_subdev_notify(sd, ADV7842_FMT_CHANGE, NULL);
1866
1867         return 0;
1868 }
1869
1870 static int adv7842_enum_mbus_code(struct v4l2_subdev *sd,
1871                 struct v4l2_subdev_pad_config *cfg,
1872                 struct v4l2_subdev_mbus_code_enum *code)
1873 {
1874         if (code->pad || code->index)
1875                 return -EINVAL;
1876         /* Good enough for now */
1877         code->code = MEDIA_BUS_FMT_FIXED;
1878         return 0;
1879 }
1880
1881 static int adv7842_g_mbus_fmt(struct v4l2_subdev *sd,
1882                               struct v4l2_mbus_framefmt *fmt)
1883 {
1884         struct adv7842_state *state = to_state(sd);
1885
1886         fmt->width = state->timings.bt.width;
1887         fmt->height = state->timings.bt.height;
1888         fmt->code = MEDIA_BUS_FMT_FIXED;
1889         fmt->field = V4L2_FIELD_NONE;
1890
1891         if (state->mode == ADV7842_MODE_SDP) {
1892                 /* SPD block */
1893                 if (!(sdp_read(sd, 0x5A) & 0x01))
1894                         return -EINVAL;
1895                 fmt->width = 720;
1896                 /* valid signal */
1897                 if (state->norm & V4L2_STD_525_60)
1898                         fmt->height = 480;
1899                 else
1900                         fmt->height = 576;
1901                 fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
1902                 return 0;
1903         }
1904
1905         fmt->colorspace = V4L2_COLORSPACE_SRGB;
1906         if (state->timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
1907                 fmt->colorspace = (state->timings.bt.height <= 576) ?
1908                         V4L2_COLORSPACE_SMPTE170M : V4L2_COLORSPACE_REC709;
1909         }
1910         return 0;
1911 }
1912
1913 static void adv7842_irq_enable(struct v4l2_subdev *sd, bool enable)
1914 {
1915         if (enable) {
1916                 /* Enable SSPD, STDI and CP locked/unlocked interrupts */
1917                 io_write(sd, 0x46, 0x9c);
1918                 /* ESDP_50HZ_DET interrupt */
1919                 io_write(sd, 0x5a, 0x10);
1920                 /* Enable CABLE_DET_A/B_ST (+5v) interrupt */
1921                 io_write(sd, 0x73, 0x03);
1922                 /* Enable V_LOCKED and DE_REGEN_LCK interrupts */
1923                 io_write(sd, 0x78, 0x03);
1924                 /* Enable SDP Standard Detection Change and SDP Video Detected */
1925                 io_write(sd, 0xa0, 0x09);
1926                 /* Enable HDMI_MODE interrupt */
1927                 io_write(sd, 0x69, 0x08);
1928         } else {
1929                 io_write(sd, 0x46, 0x0);
1930                 io_write(sd, 0x5a, 0x0);
1931                 io_write(sd, 0x73, 0x0);
1932                 io_write(sd, 0x78, 0x0);
1933                 io_write(sd, 0xa0, 0x0);
1934                 io_write(sd, 0x69, 0x0);
1935         }
1936 }
1937
1938 static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
1939 {
1940         struct adv7842_state *state = to_state(sd);
1941         u8 fmt_change_cp, fmt_change_digital, fmt_change_sdp;
1942         u8 irq_status[6];
1943
1944         adv7842_irq_enable(sd, false);
1945
1946         /* read status */
1947         irq_status[0] = io_read(sd, 0x43);
1948         irq_status[1] = io_read(sd, 0x57);
1949         irq_status[2] = io_read(sd, 0x70);
1950         irq_status[3] = io_read(sd, 0x75);
1951         irq_status[4] = io_read(sd, 0x9d);
1952         irq_status[5] = io_read(sd, 0x66);
1953
1954         /* and clear */
1955         if (irq_status[0])
1956                 io_write(sd, 0x44, irq_status[0]);
1957         if (irq_status[1])
1958                 io_write(sd, 0x58, irq_status[1]);
1959         if (irq_status[2])
1960                 io_write(sd, 0x71, irq_status[2]);
1961         if (irq_status[3])
1962                 io_write(sd, 0x76, irq_status[3]);
1963         if (irq_status[4])
1964                 io_write(sd, 0x9e, irq_status[4]);
1965         if (irq_status[5])
1966                 io_write(sd, 0x67, irq_status[5]);
1967
1968         adv7842_irq_enable(sd, true);
1969
1970         v4l2_dbg(1, debug, sd, "%s: irq %x, %x, %x, %x, %x, %x\n", __func__,
1971                  irq_status[0], irq_status[1], irq_status[2],
1972                  irq_status[3], irq_status[4], irq_status[5]);
1973
1974         /* format change CP */
1975         fmt_change_cp = irq_status[0] & 0x9c;
1976
1977         /* format change SDP */
1978         if (state->mode == ADV7842_MODE_SDP)
1979                 fmt_change_sdp = (irq_status[1] & 0x30) | (irq_status[4] & 0x09);
1980         else
1981                 fmt_change_sdp = 0;
1982
1983         /* digital format CP */
1984         if (is_digital_input(sd))
1985                 fmt_change_digital = irq_status[3] & 0x03;
1986         else
1987                 fmt_change_digital = 0;
1988
1989         /* format change */
1990         if (fmt_change_cp || fmt_change_digital || fmt_change_sdp) {
1991                 v4l2_dbg(1, debug, sd,
1992                          "%s: fmt_change_cp = 0x%x, fmt_change_digital = 0x%x, fmt_change_sdp = 0x%x\n",
1993                          __func__, fmt_change_cp, fmt_change_digital,
1994                          fmt_change_sdp);
1995                 v4l2_subdev_notify(sd, ADV7842_FMT_CHANGE, NULL);
1996                 if (handled)
1997                         *handled = true;
1998         }
1999
2000         /* HDMI/DVI mode */
2001         if (irq_status[5] & 0x08) {
2002                 v4l2_dbg(1, debug, sd, "%s: irq %s mode\n", __func__,
2003                          (io_read(sd, 0x65) & 0x08) ? "HDMI" : "DVI");
2004                 set_rgb_quantization_range(sd);
2005                 if (handled)
2006                         *handled = true;
2007         }
2008
2009         /* tx 5v detect */
2010         if (irq_status[2] & 0x3) {
2011                 v4l2_dbg(1, debug, sd, "%s: irq tx_5v\n", __func__);
2012                 adv7842_s_detect_tx_5v_ctrl(sd);
2013                 if (handled)
2014                         *handled = true;
2015         }
2016         return 0;
2017 }
2018
2019 static int adv7842_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
2020 {
2021         struct adv7842_state *state = to_state(sd);
2022         u8 *data = NULL;
2023
2024         memset(edid->reserved, 0, sizeof(edid->reserved));
2025
2026         switch (edid->pad) {
2027         case ADV7842_EDID_PORT_A:
2028         case ADV7842_EDID_PORT_B:
2029                 if (state->hdmi_edid.present & (0x04 << edid->pad))
2030                         data = state->hdmi_edid.edid;
2031                 break;
2032         case ADV7842_EDID_PORT_VGA:
2033                 if (state->vga_edid.present)
2034                         data = state->vga_edid.edid;
2035                 break;
2036         default:
2037                 return -EINVAL;
2038         }
2039
2040         if (edid->start_block == 0 && edid->blocks == 0) {
2041                 edid->blocks = data ? 2 : 0;
2042                 return 0;
2043         }
2044
2045         if (!data)
2046                 return -ENODATA;
2047
2048         if (edid->start_block >= 2)
2049                 return -EINVAL;
2050
2051         if (edid->start_block + edid->blocks > 2)
2052                 edid->blocks = 2 - edid->start_block;
2053
2054         memcpy(edid->edid, data + edid->start_block * 128, edid->blocks * 128);
2055
2056         return 0;
2057 }
2058
2059 static int adv7842_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *e)
2060 {
2061         struct adv7842_state *state = to_state(sd);
2062         int err = 0;
2063
2064         memset(e->reserved, 0, sizeof(e->reserved));
2065
2066         if (e->pad > ADV7842_EDID_PORT_VGA)
2067                 return -EINVAL;
2068         if (e->start_block != 0)
2069                 return -EINVAL;
2070         if (e->blocks > 2) {
2071                 e->blocks = 2;
2072                 return -E2BIG;
2073         }
2074
2075         /* todo, per edid */
2076         state->aspect_ratio = v4l2_calc_aspect_ratio(e->edid[0x15],
2077                         e->edid[0x16]);
2078
2079         switch (e->pad) {
2080         case ADV7842_EDID_PORT_VGA:
2081                 memset(&state->vga_edid.edid, 0, 256);
2082                 state->vga_edid.present = e->blocks ? 0x1 : 0x0;
2083                 memcpy(&state->vga_edid.edid, e->edid, 128 * e->blocks);
2084                 err = edid_write_vga_segment(sd);
2085                 break;
2086         case ADV7842_EDID_PORT_A:
2087         case ADV7842_EDID_PORT_B:
2088                 memset(&state->hdmi_edid.edid, 0, 256);
2089                 if (e->blocks)
2090                         state->hdmi_edid.present |= 0x04 << e->pad;
2091                 else
2092                         state->hdmi_edid.present &= ~(0x04 << e->pad);
2093                 memcpy(&state->hdmi_edid.edid, e->edid, 128 * e->blocks);
2094                 err = edid_write_hdmi_segment(sd, e->pad);
2095                 break;
2096         default:
2097                 return -EINVAL;
2098         }
2099         if (err < 0)
2100                 v4l2_err(sd, "error %d writing edid on port %d\n", err, e->pad);
2101         return err;
2102 }
2103
2104 struct adv7842_cfg_read_infoframe {
2105         const char *desc;
2106         u8 present_mask;
2107         u8 head_addr;
2108         u8 payload_addr;
2109 };
2110
2111 static void log_infoframe(struct v4l2_subdev *sd, struct adv7842_cfg_read_infoframe *cri)
2112 {
2113         int i;
2114         uint8_t buffer[32];
2115         union hdmi_infoframe frame;
2116         u8 len;
2117         struct i2c_client *client = v4l2_get_subdevdata(sd);
2118         struct device *dev = &client->dev;
2119
2120         if (!(io_read(sd, 0x60) & cri->present_mask)) {
2121                 v4l2_info(sd, "%s infoframe not received\n", cri->desc);
2122                 return;
2123         }
2124
2125         for (i = 0; i < 3; i++)
2126                 buffer[i] = infoframe_read(sd, cri->head_addr + i);
2127
2128         len = buffer[2] + 1;
2129
2130         if (len + 3 > sizeof(buffer)) {
2131                 v4l2_err(sd, "%s: invalid %s infoframe length %d\n", __func__, cri->desc, len);
2132                 return;
2133         }
2134
2135         for (i = 0; i < len; i++)
2136                 buffer[i + 3] = infoframe_read(sd, cri->payload_addr + i);
2137
2138         if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
2139                 v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__, cri->desc);
2140                 return;
2141         }
2142
2143         hdmi_infoframe_log(KERN_INFO, dev, &frame);
2144 }
2145
2146 static void adv7842_log_infoframes(struct v4l2_subdev *sd)
2147 {
2148         int i;
2149         struct adv7842_cfg_read_infoframe cri[] = {
2150                 { "AVI", 0x01, 0xe0, 0x00 },
2151                 { "Audio", 0x02, 0xe3, 0x1c },
2152                 { "SDP", 0x04, 0xe6, 0x2a },
2153                 { "Vendor", 0x10, 0xec, 0x54 }
2154         };
2155
2156         if (!(hdmi_read(sd, 0x05) & 0x80)) {
2157                 v4l2_info(sd, "receive DVI-D signal, no infoframes\n");
2158                 return;
2159         }
2160
2161         for (i = 0; i < ARRAY_SIZE(cri); i++)
2162                 log_infoframe(sd, &cri[i]);
2163 }
2164
2165 static const char * const prim_mode_txt[] = {
2166         "SDP",
2167         "Component",
2168         "Graphics",
2169         "Reserved",
2170         "CVBS & HDMI AUDIO",
2171         "HDMI-Comp",
2172         "HDMI-GR",
2173         "Reserved",
2174         "Reserved",
2175         "Reserved",
2176         "Reserved",
2177         "Reserved",
2178         "Reserved",
2179         "Reserved",
2180         "Reserved",
2181         "Reserved",
2182 };
2183
2184 static int adv7842_sdp_log_status(struct v4l2_subdev *sd)
2185 {
2186         /* SDP (Standard definition processor) block */
2187         uint8_t sdp_signal_detected = sdp_read(sd, 0x5A) & 0x01;
2188
2189         v4l2_info(sd, "Chip powered %s\n", no_power(sd) ? "off" : "on");
2190         v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x\n",
2191                   io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f);
2192
2193         v4l2_info(sd, "SDP: free run: %s\n",
2194                 (sdp_read(sd, 0x56) & 0x01) ? "on" : "off");
2195         v4l2_info(sd, "SDP: %s\n", sdp_signal_detected ?
2196                 "valid SD/PR signal detected" : "invalid/no signal");
2197         if (sdp_signal_detected) {
2198                 static const char * const sdp_std_txt[] = {
2199                         "NTSC-M/J",
2200                         "1?",
2201                         "NTSC-443",
2202                         "60HzSECAM",
2203                         "PAL-M",
2204                         "5?",
2205                         "PAL-60",
2206                         "7?", "8?", "9?", "a?", "b?",
2207                         "PAL-CombN",
2208                         "d?",
2209                         "PAL-BGHID",
2210                         "SECAM"
2211                 };
2212                 v4l2_info(sd, "SDP: standard %s\n",
2213                         sdp_std_txt[sdp_read(sd, 0x52) & 0x0f]);
2214                 v4l2_info(sd, "SDP: %s\n",
2215                         (sdp_read(sd, 0x59) & 0x08) ? "50Hz" : "60Hz");
2216                 v4l2_info(sd, "SDP: %s\n",
2217                         (sdp_read(sd, 0x57) & 0x08) ? "Interlaced" : "Progressive");
2218                 v4l2_info(sd, "SDP: deinterlacer %s\n",
2219                         (sdp_read(sd, 0x12) & 0x08) ? "enabled" : "disabled");
2220                 v4l2_info(sd, "SDP: csc %s mode\n",
2221                         (sdp_io_read(sd, 0xe0) & 0x40) ? "auto" : "manual");
2222         }
2223         return 0;
2224 }
2225
2226 static int adv7842_cp_log_status(struct v4l2_subdev *sd)
2227 {
2228         /* CP block */
2229         struct adv7842_state *state = to_state(sd);
2230         struct v4l2_dv_timings timings;
2231         uint8_t reg_io_0x02 = io_read(sd, 0x02);
2232         uint8_t reg_io_0x21 = io_read(sd, 0x21);
2233         uint8_t reg_rep_0x77 = rep_read(sd, 0x77);
2234         uint8_t reg_rep_0x7d = rep_read(sd, 0x7d);
2235         bool audio_pll_locked = hdmi_read(sd, 0x04) & 0x01;
2236         bool audio_sample_packet_detect = hdmi_read(sd, 0x18) & 0x01;
2237         bool audio_mute = io_read(sd, 0x65) & 0x40;
2238
2239         static const char * const csc_coeff_sel_rb[16] = {
2240                 "bypassed", "YPbPr601 -> RGB", "reserved", "YPbPr709 -> RGB",
2241                 "reserved", "RGB -> YPbPr601", "reserved", "RGB -> YPbPr709",
2242                 "reserved", "YPbPr709 -> YPbPr601", "YPbPr601 -> YPbPr709",
2243                 "reserved", "reserved", "reserved", "reserved", "manual"
2244         };
2245         static const char * const input_color_space_txt[16] = {
2246                 "RGB limited range (16-235)", "RGB full range (0-255)",
2247                 "YCbCr Bt.601 (16-235)", "YCbCr Bt.709 (16-235)",
2248                 "xvYCC Bt.601", "xvYCC Bt.709",
2249                 "YCbCr Bt.601 (0-255)", "YCbCr Bt.709 (0-255)",
2250                 "invalid", "invalid", "invalid", "invalid", "invalid",
2251                 "invalid", "invalid", "automatic"
2252         };
2253         static const char * const rgb_quantization_range_txt[] = {
2254                 "Automatic",
2255                 "RGB limited range (16-235)",
2256                 "RGB full range (0-255)",
2257         };
2258         static const char * const deep_color_mode_txt[4] = {
2259                 "8-bits per channel",
2260                 "10-bits per channel",
2261                 "12-bits per channel",
2262                 "16-bits per channel (not supported)"
2263         };
2264
2265         v4l2_info(sd, "-----Chip status-----\n");
2266         v4l2_info(sd, "Chip power: %s\n", no_power(sd) ? "off" : "on");
2267         v4l2_info(sd, "HDMI/DVI-D port selected: %s\n",
2268                         state->hdmi_port_a ? "A" : "B");
2269         v4l2_info(sd, "EDID A %s, B %s\n",
2270                   ((reg_rep_0x7d & 0x04) && (reg_rep_0x77 & 0x04)) ?
2271                   "enabled" : "disabled",
2272                   ((reg_rep_0x7d & 0x08) && (reg_rep_0x77 & 0x08)) ?
2273                   "enabled" : "disabled");
2274         v4l2_info(sd, "HPD A %s, B %s\n",
2275                   reg_io_0x21 & 0x02 ? "enabled" : "disabled",
2276                   reg_io_0x21 & 0x01 ? "enabled" : "disabled");
2277         v4l2_info(sd, "CEC %s\n", !!(cec_read(sd, 0x2a) & 0x01) ?
2278                         "enabled" : "disabled");
2279
2280         v4l2_info(sd, "-----Signal status-----\n");
2281         if (state->hdmi_port_a) {
2282                 v4l2_info(sd, "Cable detected (+5V power): %s\n",
2283                           io_read(sd, 0x6f) & 0x02 ? "true" : "false");
2284                 v4l2_info(sd, "TMDS signal detected: %s\n",
2285                           (io_read(sd, 0x6a) & 0x02) ? "true" : "false");
2286                 v4l2_info(sd, "TMDS signal locked: %s\n",
2287                           (io_read(sd, 0x6a) & 0x20) ? "true" : "false");
2288         } else {
2289                 v4l2_info(sd, "Cable detected (+5V power):%s\n",
2290                           io_read(sd, 0x6f) & 0x01 ? "true" : "false");
2291                 v4l2_info(sd, "TMDS signal detected: %s\n",
2292                           (io_read(sd, 0x6a) & 0x01) ? "true" : "false");
2293                 v4l2_info(sd, "TMDS signal locked: %s\n",
2294                           (io_read(sd, 0x6a) & 0x10) ? "true" : "false");
2295         }
2296         v4l2_info(sd, "CP free run: %s\n",
2297                   (!!(cp_read(sd, 0xff) & 0x10) ? "on" : "off"));
2298         v4l2_info(sd, "Prim-mode = 0x%x, video std = 0x%x, v_freq = 0x%x\n",
2299                   io_read(sd, 0x01) & 0x0f, io_read(sd, 0x00) & 0x3f,
2300                   (io_read(sd, 0x01) & 0x70) >> 4);
2301
2302         v4l2_info(sd, "-----Video Timings-----\n");
2303         if (no_cp_signal(sd)) {
2304                 v4l2_info(sd, "STDI: not locked\n");
2305         } else {
2306                 uint32_t bl = ((cp_read(sd, 0xb1) & 0x3f) << 8) | cp_read(sd, 0xb2);
2307                 uint32_t lcf = ((cp_read(sd, 0xb3) & 0x7) << 8) | cp_read(sd, 0xb4);
2308                 uint32_t lcvs = cp_read(sd, 0xb3) >> 3;
2309                 uint32_t fcl = ((cp_read(sd, 0xb8) & 0x1f) << 8) | cp_read(sd, 0xb9);
2310                 char hs_pol = ((cp_read(sd, 0xb5) & 0x10) ?
2311                                 ((cp_read(sd, 0xb5) & 0x08) ? '+' : '-') : 'x');
2312                 char vs_pol = ((cp_read(sd, 0xb5) & 0x40) ?
2313                                 ((cp_read(sd, 0xb5) & 0x20) ? '+' : '-') : 'x');
2314                 v4l2_info(sd,
2315                         "STDI: lcf (frame height - 1) = %d, bl = %d, lcvs (vsync) = %d, fcl = %d, %s, %chsync, %cvsync\n",
2316                         lcf, bl, lcvs, fcl,
2317                         (cp_read(sd, 0xb1) & 0x40) ?
2318                                 "interlaced" : "progressive",
2319                         hs_pol, vs_pol);
2320         }
2321         if (adv7842_query_dv_timings(sd, &timings))
2322                 v4l2_info(sd, "No video detected\n");
2323         else
2324                 v4l2_print_dv_timings(sd->name, "Detected format: ",
2325                                       &timings, true);
2326         v4l2_print_dv_timings(sd->name, "Configured format: ",
2327                         &state->timings, true);
2328
2329         if (no_cp_signal(sd))
2330                 return 0;
2331
2332         v4l2_info(sd, "-----Color space-----\n");
2333         v4l2_info(sd, "RGB quantization range ctrl: %s\n",
2334                   rgb_quantization_range_txt[state->rgb_quantization_range]);
2335         v4l2_info(sd, "Input color space: %s\n",
2336                   input_color_space_txt[reg_io_0x02 >> 4]);
2337         v4l2_info(sd, "Output color space: %s %s, saturator %s\n",
2338                   (reg_io_0x02 & 0x02) ? "RGB" : "YCbCr",
2339                   (reg_io_0x02 & 0x04) ? "(16-235)" : "(0-255)",
2340                   ((reg_io_0x02 & 0x04) ^ (reg_io_0x02 & 0x01)) ?
2341                                         "enabled" : "disabled");
2342         v4l2_info(sd, "Color space conversion: %s\n",
2343                   csc_coeff_sel_rb[cp_read(sd, 0xf4) >> 4]);
2344
2345         if (!is_digital_input(sd))
2346                 return 0;
2347
2348         v4l2_info(sd, "-----%s status-----\n", is_hdmi(sd) ? "HDMI" : "DVI-D");
2349         v4l2_info(sd, "HDCP encrypted content: %s\n",
2350                         (hdmi_read(sd, 0x05) & 0x40) ? "true" : "false");
2351         v4l2_info(sd, "HDCP keys read: %s%s\n",
2352                         (hdmi_read(sd, 0x04) & 0x20) ? "yes" : "no",
2353                         (hdmi_read(sd, 0x04) & 0x10) ? "ERROR" : "");
2354         if (!is_hdmi(sd))
2355                 return 0;
2356
2357         v4l2_info(sd, "Audio: pll %s, samples %s, %s\n",
2358                         audio_pll_locked ? "locked" : "not locked",
2359                         audio_sample_packet_detect ? "detected" : "not detected",
2360                         audio_mute ? "muted" : "enabled");
2361         if (audio_pll_locked && audio_sample_packet_detect) {
2362                 v4l2_info(sd, "Audio format: %s\n",
2363                         (hdmi_read(sd, 0x07) & 0x40) ? "multi-channel" : "stereo");
2364         }
2365         v4l2_info(sd, "Audio CTS: %u\n", (hdmi_read(sd, 0x5b) << 12) +
2366                         (hdmi_read(sd, 0x5c) << 8) +
2367                         (hdmi_read(sd, 0x5d) & 0xf0));
2368         v4l2_info(sd, "Audio N: %u\n", ((hdmi_read(sd, 0x5d) & 0x0f) << 16) +
2369                         (hdmi_read(sd, 0x5e) << 8) +
2370                         hdmi_read(sd, 0x5f));
2371         v4l2_info(sd, "AV Mute: %s\n",
2372                         (hdmi_read(sd, 0x04) & 0x40) ? "on" : "off");
2373         v4l2_info(sd, "Deep color mode: %s\n",
2374                         deep_color_mode_txt[hdmi_read(sd, 0x0b) >> 6]);
2375
2376         adv7842_log_infoframes(sd);
2377
2378         return 0;
2379 }
2380
2381 static int adv7842_log_status(struct v4l2_subdev *sd)
2382 {
2383         struct adv7842_state *state = to_state(sd);
2384
2385         if (state->mode == ADV7842_MODE_SDP)
2386                 return adv7842_sdp_log_status(sd);
2387         return adv7842_cp_log_status(sd);
2388 }
2389
2390 static int adv7842_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
2391 {
2392         struct adv7842_state *state = to_state(sd);
2393
2394         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2395
2396         if (state->mode != ADV7842_MODE_SDP)
2397                 return -ENODATA;
2398
2399         if (!(sdp_read(sd, 0x5A) & 0x01)) {
2400                 *std = 0;
2401                 v4l2_dbg(1, debug, sd, "%s: no valid signal\n", __func__);
2402                 return 0;
2403         }
2404
2405         switch (sdp_read(sd, 0x52) & 0x0f) {
2406         case 0:
2407                 /* NTSC-M/J */
2408                 *std &= V4L2_STD_NTSC;
2409                 break;
2410         case 2:
2411                 /* NTSC-443 */
2412                 *std &= V4L2_STD_NTSC_443;
2413                 break;
2414         case 3:
2415                 /* 60HzSECAM */
2416                 *std &= V4L2_STD_SECAM;
2417                 break;
2418         case 4:
2419                 /* PAL-M */
2420                 *std &= V4L2_STD_PAL_M;
2421                 break;
2422         case 6:
2423                 /* PAL-60 */
2424                 *std &= V4L2_STD_PAL_60;
2425                 break;
2426         case 0xc:
2427                 /* PAL-CombN */
2428                 *std &= V4L2_STD_PAL_Nc;
2429                 break;
2430         case 0xe:
2431                 /* PAL-BGHID */
2432                 *std &= V4L2_STD_PAL;
2433                 break;
2434         case 0xf:
2435                 /* SECAM */
2436                 *std &= V4L2_STD_SECAM;
2437                 break;
2438         default:
2439                 *std &= V4L2_STD_ALL;
2440                 break;
2441         }
2442         return 0;
2443 }
2444
2445 static void adv7842_s_sdp_io(struct v4l2_subdev *sd, struct adv7842_sdp_io_sync_adjustment *s)
2446 {
2447         if (s && s->adjust) {
2448                 sdp_io_write(sd, 0x94, (s->hs_beg >> 8) & 0xf);
2449                 sdp_io_write(sd, 0x95, s->hs_beg & 0xff);
2450                 sdp_io_write(sd, 0x96, (s->hs_width >> 8) & 0xf);
2451                 sdp_io_write(sd, 0x97, s->hs_width & 0xff);
2452                 sdp_io_write(sd, 0x98, (s->de_beg >> 8) & 0xf);
2453                 sdp_io_write(sd, 0x99, s->de_beg & 0xff);
2454                 sdp_io_write(sd, 0x9a, (s->de_end >> 8) & 0xf);
2455                 sdp_io_write(sd, 0x9b, s->de_end & 0xff);
2456                 sdp_io_write(sd, 0xa8, s->vs_beg_o);
2457                 sdp_io_write(sd, 0xa9, s->vs_beg_e);
2458                 sdp_io_write(sd, 0xaa, s->vs_end_o);
2459                 sdp_io_write(sd, 0xab, s->vs_end_e);
2460                 sdp_io_write(sd, 0xac, s->de_v_beg_o);
2461                 sdp_io_write(sd, 0xad, s->de_v_beg_e);
2462                 sdp_io_write(sd, 0xae, s->de_v_end_o);
2463                 sdp_io_write(sd, 0xaf, s->de_v_end_e);
2464         } else {
2465                 /* set to default */
2466                 sdp_io_write(sd, 0x94, 0x00);
2467                 sdp_io_write(sd, 0x95, 0x00);
2468                 sdp_io_write(sd, 0x96, 0x00);
2469                 sdp_io_write(sd, 0x97, 0x20);
2470                 sdp_io_write(sd, 0x98, 0x00);
2471                 sdp_io_write(sd, 0x99, 0x00);
2472                 sdp_io_write(sd, 0x9a, 0x00);
2473                 sdp_io_write(sd, 0x9b, 0x00);
2474                 sdp_io_write(sd, 0xa8, 0x04);
2475                 sdp_io_write(sd, 0xa9, 0x04);
2476                 sdp_io_write(sd, 0xaa, 0x04);
2477                 sdp_io_write(sd, 0xab, 0x04);
2478                 sdp_io_write(sd, 0xac, 0x04);
2479                 sdp_io_write(sd, 0xad, 0x04);
2480                 sdp_io_write(sd, 0xae, 0x04);
2481                 sdp_io_write(sd, 0xaf, 0x04);
2482         }
2483 }
2484
2485 static int adv7842_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
2486 {
2487         struct adv7842_state *state = to_state(sd);
2488         struct adv7842_platform_data *pdata = &state->pdata;
2489
2490         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2491
2492         if (state->mode != ADV7842_MODE_SDP)
2493                 return -ENODATA;
2494
2495         if (norm & V4L2_STD_625_50)
2496                 adv7842_s_sdp_io(sd, &pdata->sdp_io_sync_625);
2497         else if (norm & V4L2_STD_525_60)
2498                 adv7842_s_sdp_io(sd, &pdata->sdp_io_sync_525);
2499         else
2500                 adv7842_s_sdp_io(sd, NULL);
2501
2502         if (norm & V4L2_STD_ALL) {
2503                 state->norm = norm;
2504                 return 0;
2505         }
2506         return -EINVAL;
2507 }
2508
2509 static int adv7842_g_std(struct v4l2_subdev *sd, v4l2_std_id *norm)
2510 {
2511         struct adv7842_state *state = to_state(sd);
2512
2513         v4l2_dbg(1, debug, sd, "%s:\n", __func__);
2514
2515         if (state->mode != ADV7842_MODE_SDP)
2516                 return -ENODATA;
2517
2518         *norm = state->norm;
2519         return 0;
2520 }
2521
2522 /* ----------------------------------------------------------------------- */
2523
2524 static int adv7842_core_init(struct v4l2_subdev *sd)
2525 {
2526         struct adv7842_state *state = to_state(sd);
2527         struct adv7842_platform_data *pdata = &state->pdata;
2528         hdmi_write(sd, 0x48,
2529                    (pdata->disable_pwrdnb ? 0x80 : 0) |
2530                    (pdata->disable_cable_det_rst ? 0x40 : 0));
2531
2532         disable_input(sd);
2533
2534         /*
2535          * Disable I2C access to internal EDID ram from HDMI DDC ports
2536          * Disable auto edid enable when leaving powerdown mode
2537          */
2538         rep_write_and_or(sd, 0x77, 0xd3, 0x20);
2539
2540         /* power */
2541         io_write(sd, 0x0c, 0x42);   /* Power up part and power down VDP */
2542         io_write(sd, 0x15, 0x80);   /* Power up pads */
2543
2544         /* video format */
2545         io_write(sd, 0x02,
2546                  0xf0 |
2547                  pdata->alt_gamma << 3 |
2548                  pdata->op_656_range << 2 |
2549                  pdata->rgb_out << 1 |
2550                  pdata->alt_data_sat << 0);
2551         io_write(sd, 0x03, pdata->op_format_sel);
2552         io_write_and_or(sd, 0x04, 0x1f, pdata->op_ch_sel << 5);
2553         io_write_and_or(sd, 0x05, 0xf0, pdata->blank_data << 3 |
2554                         pdata->insert_av_codes << 2 |
2555                         pdata->replicate_av_codes << 1 |
2556                         pdata->invert_cbcr << 0);
2557
2558         /* HDMI audio */
2559         hdmi_write_and_or(sd, 0x1a, 0xf1, 0x08); /* Wait 1 s before unmute */
2560
2561         /* Drive strength */
2562         io_write_and_or(sd, 0x14, 0xc0,
2563                         pdata->dr_str_data << 4 |
2564                         pdata->dr_str_clk << 2 |
2565                         pdata->dr_str_sync);
2566
2567         /* HDMI free run */
2568         cp_write_and_or(sd, 0xba, 0xfc, pdata->hdmi_free_run_enable |
2569                                         (pdata->hdmi_free_run_mode << 1));
2570
2571         /* SPD free run */
2572         sdp_write_and_or(sd, 0xdd, 0xf0, pdata->sdp_free_run_force |
2573                                          (pdata->sdp_free_run_cbar_en << 1) |
2574                                          (pdata->sdp_free_run_man_col_en << 2) |
2575                                          (pdata->sdp_free_run_auto << 3));
2576
2577         /* TODO from platform data */
2578         cp_write(sd, 0x69, 0x14);   /* Enable CP CSC */
2579         io_write(sd, 0x06, 0xa6);   /* positive VS and HS and DE */
2580         cp_write(sd, 0xf3, 0xdc); /* Low threshold to enter/exit free run mode */
2581         afe_write(sd, 0xb5, 0x01);  /* Setting MCLK to 256Fs */
2582
2583         afe_write(sd, 0x02, pdata->ain_sel); /* Select analog input muxing mode */
2584         io_write_and_or(sd, 0x30, ~(1 << 4), pdata->output_bus_lsb_to_msb << 4);
2585
2586         sdp_csc_coeff(sd, &pdata->sdp_csc_coeff);
2587
2588         /* todo, improve settings for sdram */
2589         if (pdata->sd_ram_size >= 128) {
2590                 sdp_write(sd, 0x12, 0x0d); /* Frame TBC,3D comb enabled */
2591                 if (pdata->sd_ram_ddr) {
2592                         /* SDP setup for the AD eval board */
2593                         sdp_io_write(sd, 0x6f, 0x00); /* DDR mode */
2594                         sdp_io_write(sd, 0x75, 0x0a); /* 128 MB memory size */
2595                         sdp_io_write(sd, 0x7a, 0xa5); /* Timing Adjustment */
2596                         sdp_io_write(sd, 0x7b, 0x8f); /* Timing Adjustment */
2597                         sdp_io_write(sd, 0x60, 0x01); /* SDRAM reset */
2598                 } else {
2599                         sdp_io_write(sd, 0x75, 0x0a); /* 64 MB memory size ?*/
2600                         sdp_io_write(sd, 0x74, 0x00); /* must be zero for sdr sdram */
2601                         sdp_io_write(sd, 0x79, 0x33); /* CAS latency to 3,
2602                                                          depends on memory */
2603                         sdp_io_write(sd, 0x6f, 0x01); /* SDR mode */
2604                         sdp_io_write(sd, 0x7a, 0xa5); /* Timing Adjustment */
2605                         sdp_io_write(sd, 0x7b, 0x8f); /* Timing Adjustment */
2606                         sdp_io_write(sd, 0x60, 0x01); /* SDRAM reset */
2607                 }
2608         } else {
2609                 /*
2610                  * Manual UG-214, rev 0 is bit confusing on this bit
2611                  * but a '1' disables any signal if the Ram is active.
2612                  */
2613                 sdp_io_write(sd, 0x29, 0x10); /* Tristate memory interface */
2614         }
2615
2616         select_input(sd, pdata->vid_std_select);
2617
2618         enable_input(sd);
2619
2620         if (pdata->hpa_auto) {
2621                 /* HPA auto, HPA 0.5s after Edid set and Cable detect */
2622                 hdmi_write(sd, 0x69, 0x5c);
2623         } else {
2624                 /* HPA manual */
2625                 hdmi_write(sd, 0x69, 0xa3);
2626                 /* HPA disable on port A and B */
2627                 io_write_and_or(sd, 0x20, 0xcf, 0x00);
2628         }
2629
2630         /* LLC */
2631         io_write(sd, 0x19, 0x80 | pdata->llc_dll_phase);
2632         io_write(sd, 0x33, 0x40);
2633
2634         /* interrupts */
2635         io_write(sd, 0x40, 0xf2); /* Configure INT1 */
2636
2637         adv7842_irq_enable(sd, true);
2638
2639         return v4l2_ctrl_handler_setup(sd->ctrl_handler);
2640 }
2641
2642 /* ----------------------------------------------------------------------- */
2643
2644 static int adv7842_ddr_ram_test(struct v4l2_subdev *sd)
2645 {
2646         /*
2647          * From ADV784x external Memory test.pdf
2648          *
2649          * Reset must just been performed before running test.
2650          * Recommended to reset after test.
2651          */
2652         int i;
2653         int pass = 0;
2654         int fail = 0;
2655         int complete = 0;
2656
2657         io_write(sd, 0x00, 0x01);  /* Program SDP 4x1 */
2658         io_write(sd, 0x01, 0x00);  /* Program SDP mode */
2659         afe_write(sd, 0x80, 0x92); /* SDP Recommeneded Write */
2660         afe_write(sd, 0x9B, 0x01); /* SDP Recommeneded Write ADV7844ES1 */
2661         afe_write(sd, 0x9C, 0x60); /* SDP Recommeneded Write ADV7844ES1 */
2662         afe_write(sd, 0x9E, 0x02); /* SDP Recommeneded Write ADV7844ES1 */
2663         afe_write(sd, 0xA0, 0x0B); /* SDP Recommeneded Write ADV7844ES1 */
2664         afe_write(sd, 0xC3, 0x02); /* Memory BIST Initialisation */
2665         io_write(sd, 0x0C, 0x40);  /* Power up ADV7844 */
2666         io_write(sd, 0x15, 0xBA);  /* Enable outputs */
2667         sdp_write(sd, 0x12, 0x00); /* Disable 3D comb, Frame TBC & 3DNR */
2668         io_write(sd, 0xFF, 0x04);  /* Reset memory controller */
2669
2670         mdelay(5);
2671
2672         sdp_write(sd, 0x12, 0x00);    /* Disable 3D Comb, Frame TBC & 3DNR */
2673         sdp_io_write(sd, 0x2A, 0x01); /* Memory BIST Initialisation */
2674         sdp_io_write(sd, 0x7c, 0x19); /* Memory BIST Initialisation */
2675         sdp_io_write(sd, 0x80, 0x87); /* Memory BIST Initialisation */
2676         sdp_io_write(sd, 0x81, 0x4a); /* Memory BIST Initialisation */
2677         sdp_io_write(sd, 0x82, 0x2c); /* Memory BIST Initialisation */
2678         sdp_io_write(sd, 0x83, 0x0e); /* Memory BIST Initialisation */
2679         sdp_io_write(sd, 0x84, 0x94); /* Memory BIST Initialisation */
2680         sdp_io_write(sd, 0x85, 0x62); /* Memory BIST Initialisation */
2681         sdp_io_write(sd, 0x7d, 0x00); /* Memory BIST Initialisation */
2682         sdp_io_write(sd, 0x7e, 0x1a); /* Memory BIST Initialisation */
2683
2684         mdelay(5);
2685
2686         sdp_io_write(sd, 0xd9, 0xd5); /* Enable BIST Test */
2687         sdp_write(sd, 0x12, 0x05); /* Enable FRAME TBC & 3D COMB */
2688
2689         mdelay(20);
2690
2691         for (i = 0; i < 10; i++) {
2692                 u8 result = sdp_io_read(sd, 0xdb);
2693                 if (result & 0x10) {
2694                         complete++;
2695                         if (result & 0x20)
2696                                 fail++;
2697                         else
2698                                 pass++;
2699                 }
2700                 mdelay(20);
2701         }
2702
2703         v4l2_dbg(1, debug, sd,
2704                 "Ram Test: completed %d of %d: pass %d, fail %d\n",
2705                 complete, i, pass, fail);
2706
2707         if (!complete || fail)
2708                 return -EIO;
2709         return 0;
2710 }
2711
2712 static void adv7842_rewrite_i2c_addresses(struct v4l2_subdev *sd,
2713                 struct adv7842_platform_data *pdata)
2714 {
2715         io_write(sd, 0xf1, pdata->i2c_sdp << 1);
2716         io_write(sd, 0xf2, pdata->i2c_sdp_io << 1);
2717         io_write(sd, 0xf3, pdata->i2c_avlink << 1);
2718         io_write(sd, 0xf4, pdata->i2c_cec << 1);
2719         io_write(sd, 0xf5, pdata->i2c_infoframe << 1);
2720
2721         io_write(sd, 0xf8, pdata->i2c_afe << 1);
2722         io_write(sd, 0xf9, pdata->i2c_repeater << 1);
2723         io_write(sd, 0xfa, pdata->i2c_edid << 1);
2724         io_write(sd, 0xfb, pdata->i2c_hdmi << 1);
2725
2726         io_write(sd, 0xfd, pdata->i2c_cp << 1);
2727         io_write(sd, 0xfe, pdata->i2c_vdp << 1);
2728 }
2729
2730 static int adv7842_command_ram_test(struct v4l2_subdev *sd)
2731 {
2732         struct i2c_client *client = v4l2_get_subdevdata(sd);
2733         struct adv7842_state *state = to_state(sd);
2734         struct adv7842_platform_data *pdata = client->dev.platform_data;
2735         struct v4l2_dv_timings timings;
2736         int ret = 0;
2737
2738         if (!pdata)
2739                 return -ENODEV;
2740
2741         if (!pdata->sd_ram_size || !pdata->sd_ram_ddr) {
2742                 v4l2_info(sd, "no sdram or no ddr sdram\n");
2743                 return -EINVAL;
2744         }
2745
2746         main_reset(sd);
2747
2748         adv7842_rewrite_i2c_addresses(sd, pdata);
2749
2750         /* run ram test */
2751         ret = adv7842_ddr_ram_test(sd);
2752
2753         main_reset(sd);
2754
2755         adv7842_rewrite_i2c_addresses(sd, pdata);
2756
2757         /* and re-init chip and state */
2758         adv7842_core_init(sd);
2759
2760         disable_input(sd);
2761
2762         select_input(sd, state->vid_std_select);
2763
2764         enable_input(sd);
2765
2766         edid_write_vga_segment(sd);
2767         edid_write_hdmi_segment(sd, ADV7842_EDID_PORT_A);
2768         edid_write_hdmi_segment(sd, ADV7842_EDID_PORT_B);
2769
2770         timings = state->timings;
2771
2772         memset(&state->timings, 0, sizeof(struct v4l2_dv_timings));
2773
2774         adv7842_s_dv_timings(sd, &timings);
2775
2776         return ret;
2777 }
2778
2779 static long adv7842_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
2780 {
2781         switch (cmd) {
2782         case ADV7842_CMD_RAM_TEST:
2783                 return adv7842_command_ram_test(sd);
2784         }
2785         return -ENOTTY;
2786 }
2787
2788 /* ----------------------------------------------------------------------- */
2789
2790 static const struct v4l2_ctrl_ops adv7842_ctrl_ops = {
2791         .s_ctrl = adv7842_s_ctrl,
2792 };
2793
2794 static const struct v4l2_subdev_core_ops adv7842_core_ops = {
2795         .log_status = adv7842_log_status,
2796         .ioctl = adv7842_ioctl,
2797         .interrupt_service_routine = adv7842_isr,
2798 #ifdef CONFIG_VIDEO_ADV_DEBUG
2799         .g_register = adv7842_g_register,
2800         .s_register = adv7842_s_register,
2801 #endif
2802 };
2803
2804 static const struct v4l2_subdev_video_ops adv7842_video_ops = {
2805         .g_std = adv7842_g_std,
2806         .s_std = adv7842_s_std,
2807         .s_routing = adv7842_s_routing,
2808         .querystd = adv7842_querystd,
2809         .g_input_status = adv7842_g_input_status,
2810         .s_dv_timings = adv7842_s_dv_timings,
2811         .g_dv_timings = adv7842_g_dv_timings,
2812         .query_dv_timings = adv7842_query_dv_timings,
2813         .g_mbus_fmt = adv7842_g_mbus_fmt,
2814         .try_mbus_fmt = adv7842_g_mbus_fmt,
2815         .s_mbus_fmt = adv7842_g_mbus_fmt,
2816 };
2817
2818 static const struct v4l2_subdev_pad_ops adv7842_pad_ops = {
2819         .get_edid = adv7842_get_edid,
2820         .set_edid = adv7842_set_edid,
2821         .enum_dv_timings = adv7842_enum_dv_timings,
2822         .dv_timings_cap = adv7842_dv_timings_cap,
2823         .enum_mbus_code = adv7842_enum_mbus_code,
2824 };
2825
2826 static const struct v4l2_subdev_ops adv7842_ops = {
2827         .core = &adv7842_core_ops,
2828         .video = &adv7842_video_ops,
2829         .pad = &adv7842_pad_ops,
2830 };
2831
2832 /* -------------------------- custom ctrls ---------------------------------- */
2833
2834 static const struct v4l2_ctrl_config adv7842_ctrl_analog_sampling_phase = {
2835         .ops = &adv7842_ctrl_ops,
2836         .id = V4L2_CID_ADV_RX_ANALOG_SAMPLING_PHASE,
2837         .name = "Analog Sampling Phase",
2838         .type = V4L2_CTRL_TYPE_INTEGER,
2839         .min = 0,
2840         .max = 0x1f,
2841         .step = 1,
2842         .def = 0,
2843 };
2844
2845 static const struct v4l2_ctrl_config adv7842_ctrl_free_run_color_manual = {
2846         .ops = &adv7842_ctrl_ops,
2847         .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR_MANUAL,
2848         .name = "Free Running Color, Manual",
2849         .type = V4L2_CTRL_TYPE_BOOLEAN,
2850         .max = 1,
2851         .step = 1,
2852         .def = 1,
2853 };
2854
2855 static const struct v4l2_ctrl_config adv7842_ctrl_free_run_color = {
2856         .ops = &adv7842_ctrl_ops,
2857         .id = V4L2_CID_ADV_RX_FREE_RUN_COLOR,
2858         .name = "Free Running Color",
2859         .type = V4L2_CTRL_TYPE_INTEGER,
2860         .max = 0xffffff,
2861         .step = 0x1,
2862 };
2863
2864
2865 static void adv7842_unregister_clients(struct v4l2_subdev *sd)
2866 {
2867         struct adv7842_state *state = to_state(sd);
2868         if (state->i2c_avlink)
2869                 i2c_unregister_device(state->i2c_avlink);
2870         if (state->i2c_cec)
2871                 i2c_unregister_device(state->i2c_cec);
2872         if (state->i2c_infoframe)
2873                 i2c_unregister_device(state->i2c_infoframe);
2874         if (state->i2c_sdp_io)
2875                 i2c_unregister_device(state->i2c_sdp_io);
2876         if (state->i2c_sdp)
2877                 i2c_unregister_device(state->i2c_sdp);
2878         if (state->i2c_afe)
2879                 i2c_unregister_device(state->i2c_afe);
2880         if (state->i2c_repeater)
2881                 i2c_unregister_device(state->i2c_repeater);
2882         if (state->i2c_edid)
2883                 i2c_unregister_device(state->i2c_edid);
2884         if (state->i2c_hdmi)
2885                 i2c_unregister_device(state->i2c_hdmi);
2886         if (state->i2c_cp)
2887                 i2c_unregister_device(state->i2c_cp);
2888         if (state->i2c_vdp)
2889                 i2c_unregister_device(state->i2c_vdp);
2890
2891         state->i2c_avlink = NULL;
2892         state->i2c_cec = NULL;
2893         state->i2c_infoframe = NULL;
2894         state->i2c_sdp_io = NULL;
2895         state->i2c_sdp = NULL;
2896         state->i2c_afe = NULL;
2897         state->i2c_repeater = NULL;
2898         state->i2c_edid = NULL;
2899         state->i2c_hdmi = NULL;
2900         state->i2c_cp = NULL;
2901         state->i2c_vdp = NULL;
2902 }
2903
2904 static struct i2c_client *adv7842_dummy_client(struct v4l2_subdev *sd, const char *desc,
2905                                                u8 addr, u8 io_reg)
2906 {
2907         struct i2c_client *client = v4l2_get_subdevdata(sd);
2908         struct i2c_client *cp;
2909
2910         io_write(sd, io_reg, addr << 1);
2911
2912         if (addr == 0) {
2913                 v4l2_err(sd, "no %s i2c addr configured\n", desc);
2914                 return NULL;
2915         }
2916
2917         cp = i2c_new_dummy(client->adapter, io_read(sd, io_reg) >> 1);
2918         if (!cp)
2919                 v4l2_err(sd, "register %s on i2c addr 0x%x failed\n", desc, addr);
2920
2921         return cp;
2922 }
2923
2924 static int adv7842_register_clients(struct v4l2_subdev *sd)
2925 {
2926         struct adv7842_state *state = to_state(sd);
2927         struct adv7842_platform_data *pdata = &state->pdata;
2928
2929         state->i2c_avlink = adv7842_dummy_client(sd, "avlink", pdata->i2c_avlink, 0xf3);
2930         state->i2c_cec = adv7842_dummy_client(sd, "cec", pdata->i2c_cec, 0xf4);
2931         state->i2c_infoframe = adv7842_dummy_client(sd, "infoframe", pdata->i2c_infoframe, 0xf5);
2932         state->i2c_sdp_io = adv7842_dummy_client(sd, "sdp_io", pdata->i2c_sdp_io, 0xf2);
2933         state->i2c_sdp = adv7842_dummy_client(sd, "sdp", pdata->i2c_sdp, 0xf1);
2934         state->i2c_afe = adv7842_dummy_client(sd, "afe", pdata->i2c_afe, 0xf8);
2935         state->i2c_repeater = adv7842_dummy_client(sd, "repeater", pdata->i2c_repeater, 0xf9);
2936         state->i2c_edid = adv7842_dummy_client(sd, "edid", pdata->i2c_edid, 0xfa);
2937         state->i2c_hdmi = adv7842_dummy_client(sd, "hdmi", pdata->i2c_hdmi, 0xfb);
2938         state->i2c_cp = adv7842_dummy_client(sd, "cp", pdata->i2c_cp, 0xfd);
2939         state->i2c_vdp = adv7842_dummy_client(sd, "vdp", pdata->i2c_vdp, 0xfe);
2940
2941         if (!state->i2c_avlink ||
2942             !state->i2c_cec ||
2943             !state->i2c_infoframe ||
2944             !state->i2c_sdp_io ||
2945             !state->i2c_sdp ||
2946             !state->i2c_afe ||
2947             !state->i2c_repeater ||
2948             !state->i2c_edid ||
2949             !state->i2c_hdmi ||
2950             !state->i2c_cp ||
2951             !state->i2c_vdp)
2952                 return -1;
2953
2954         return 0;
2955 }
2956
2957 static int adv7842_probe(struct i2c_client *client,
2958                          const struct i2c_device_id *id)
2959 {
2960         struct adv7842_state *state;
2961         static const struct v4l2_dv_timings cea640x480 =
2962                 V4L2_DV_BT_CEA_640X480P59_94;
2963         struct adv7842_platform_data *pdata = client->dev.platform_data;
2964         struct v4l2_ctrl_handler *hdl;
2965         struct v4l2_subdev *sd;
2966         u16 rev;
2967         int err;
2968
2969         /* Check if the adapter supports the needed features */
2970         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2971                 return -EIO;
2972
2973         v4l_dbg(1, debug, client, "detecting adv7842 client on address 0x%x\n",
2974                 client->addr << 1);
2975
2976         if (!pdata) {
2977                 v4l_err(client, "No platform data!\n");
2978                 return -ENODEV;
2979         }
2980
2981         state = devm_kzalloc(&client->dev, sizeof(struct adv7842_state), GFP_KERNEL);
2982         if (!state) {
2983                 v4l_err(client, "Could not allocate adv7842_state memory!\n");
2984                 return -ENOMEM;
2985         }
2986
2987         /* platform data */
2988         state->pdata = *pdata;
2989         state->timings = cea640x480;
2990
2991         sd = &state->sd;
2992         v4l2_i2c_subdev_init(sd, client, &adv7842_ops);
2993         sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2994         state->mode = pdata->mode;
2995
2996         state->hdmi_port_a = pdata->input == ADV7842_SELECT_HDMI_PORT_A;
2997         state->restart_stdi_once = true;
2998
2999         /* i2c access to adv7842? */
3000         rev = adv_smbus_read_byte_data_check(client, 0xea, false) << 8 |
3001                 adv_smbus_read_byte_data_check(client, 0xeb, false);
3002         if (rev != 0x2012) {
3003                 v4l2_info(sd, "got rev=0x%04x on first read attempt\n", rev);
3004                 rev = adv_smbus_read_byte_data_check(client, 0xea, false) << 8 |
3005                         adv_smbus_read_byte_data_check(client, 0xeb, false);
3006         }
3007         if (rev != 0x2012) {
3008                 v4l2_info(sd, "not an adv7842 on address 0x%x (rev=0x%04x)\n",
3009                           client->addr << 1, rev);
3010                 return -ENODEV;
3011         }
3012
3013         if (pdata->chip_reset)
3014                 main_reset(sd);
3015
3016         /* control handlers */
3017         hdl = &state->hdl;
3018         v4l2_ctrl_handler_init(hdl, 6);
3019
3020         /* add in ascending ID order */
3021         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3022                           V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
3023         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3024                           V4L2_CID_CONTRAST, 0, 255, 1, 128);
3025         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3026                           V4L2_CID_SATURATION, 0, 255, 1, 128);
3027         v4l2_ctrl_new_std(hdl, &adv7842_ctrl_ops,
3028                           V4L2_CID_HUE, 0, 128, 1, 0);
3029
3030         /* custom controls */
3031         state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL,
3032                         V4L2_CID_DV_RX_POWER_PRESENT, 0, 3, 0, 0);
3033         state->analog_sampling_phase_ctrl = v4l2_ctrl_new_custom(hdl,
3034                         &adv7842_ctrl_analog_sampling_phase, NULL);
3035         state->free_run_color_ctrl_manual = v4l2_ctrl_new_custom(hdl,
3036                         &adv7842_ctrl_free_run_color_manual, NULL);
3037         state->free_run_color_ctrl = v4l2_ctrl_new_custom(hdl,
3038                         &adv7842_ctrl_free_run_color, NULL);
3039         state->rgb_quantization_range_ctrl =
3040                 v4l2_ctrl_new_std_menu(hdl, &adv7842_ctrl_ops,
3041                         V4L2_CID_DV_RX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL,
3042                         0, V4L2_DV_RGB_RANGE_AUTO);
3043         sd->ctrl_handler = hdl;
3044         if (hdl->error) {
3045                 err = hdl->error;
3046                 goto err_hdl;
3047         }
3048         state->detect_tx_5v_ctrl->is_private = true;
3049         state->rgb_quantization_range_ctrl->is_private = true;
3050         state->analog_sampling_phase_ctrl->is_private = true;
3051         state->free_run_color_ctrl_manual->is_private = true;
3052         state->free_run_color_ctrl->is_private = true;
3053
3054         if (adv7842_s_detect_tx_5v_ctrl(sd)) {
3055                 err = -ENODEV;
3056                 goto err_hdl;
3057         }
3058
3059         if (adv7842_register_clients(sd) < 0) {
3060                 err = -ENOMEM;
3061                 v4l2_err(sd, "failed to create all i2c clients\n");
3062                 goto err_i2c;
3063         }
3064
3065         /* work queues */
3066         state->work_queues = create_singlethread_workqueue(client->name);
3067         if (!state->work_queues) {
3068                 v4l2_err(sd, "Could not create work queue\n");
3069                 err = -ENOMEM;
3070                 goto err_i2c;
3071         }
3072
3073         INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug,
3074                         adv7842_delayed_work_enable_hotplug);
3075
3076         state->pad.flags = MEDIA_PAD_FL_SOURCE;
3077         err = media_entity_init(&sd->entity, 1, &state->pad, 0);
3078         if (err)
3079                 goto err_work_queues;
3080
3081         err = adv7842_core_init(sd);
3082         if (err)
3083                 goto err_entity;
3084
3085         v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
3086                   client->addr << 1, client->adapter->name);
3087         return 0;
3088
3089 err_entity:
3090         media_entity_cleanup(&sd->entity);
3091 err_work_queues:
3092         cancel_delayed_work(&state->delayed_work_enable_hotplug);
3093         destroy_workqueue(state->work_queues);
3094 err_i2c:
3095         adv7842_unregister_clients(sd);
3096 err_hdl:
3097         v4l2_ctrl_handler_free(hdl);
3098         return err;
3099 }
3100
3101 /* ----------------------------------------------------------------------- */
3102
3103 static int adv7842_remove(struct i2c_client *client)
3104 {
3105         struct v4l2_subdev *sd = i2c_get_clientdata(client);
3106         struct adv7842_state *state = to_state(sd);
3107
3108         adv7842_irq_enable(sd, false);
3109
3110         cancel_delayed_work(&state->delayed_work_enable_hotplug);
3111         destroy_workqueue(state->work_queues);
3112         v4l2_device_unregister_subdev(sd);
3113         media_entity_cleanup(&sd->entity);
3114         adv7842_unregister_clients(sd);
3115         v4l2_ctrl_handler_free(sd->ctrl_handler);
3116         return 0;
3117 }
3118
3119 /* ----------------------------------------------------------------------- */
3120
3121 static struct i2c_device_id adv7842_id[] = {
3122         { "adv7842", 0 },
3123         { }
3124 };
3125 MODULE_DEVICE_TABLE(i2c, adv7842_id);
3126
3127 /* ----------------------------------------------------------------------- */
3128
3129 static struct i2c_driver adv7842_driver = {
3130         .driver = {
3131                 .owner = THIS_MODULE,
3132                 .name = "adv7842",
3133         },
3134         .probe = adv7842_probe,
3135         .remove = adv7842_remove,
3136         .id_table = adv7842_id,
3137 };
3138
3139 module_i2c_driver(adv7842_driver);