root/drivers/media/i2c/msp3400-driver.c

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DEFINITIONS

This source file includes following definitions.
  1. msp_reset
  2. msp_read
  3. msp_read_dem
  4. msp_read_dsp
  5. msp_write
  6. msp_write_dem
  7. msp_write_dsp
  8. msp_set_scart
  9. msp_wake_thread
  10. msp_sleep
  11. msp_s_ctrl
  12. msp_update_volume
  13. msp_s_radio
  14. msp_s_frequency
  15. msp_querystd
  16. msp_s_std
  17. msp_s_routing
  18. msp_g_tuner
  19. msp_s_tuner
  20. msp_s_i2s_clock_freq
  21. msp_log_status
  22. msp_suspend
  23. msp_resume
  24. msp_probe
  25. msp_remove

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Programming the mspx4xx sound processor family
   4  *
   5  * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
   6  *
   7  * what works and what doesn't:
   8  *
   9  *  AM-Mono
  10  *      Support for Hauppauge cards added (decoding handled by tuner) added by
  11  *      Frederic Crozat <fcrozat@mail.dotcom.fr>
  12  *
  13  *  FM-Mono
  14  *      should work. The stereo modes are backward compatible to FM-mono,
  15  *      therefore FM-Mono should be always available.
  16  *
  17  *  FM-Stereo (B/G, used in germany)
  18  *      should work, with autodetect
  19  *
  20  *  FM-Stereo (satellite)
  21  *      should work, no autodetect (i.e. default is mono, but you can
  22  *      switch to stereo -- untested)
  23  *
  24  *  NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
  25  *      should work, with autodetect. Support for NICAM was added by
  26  *      Pekka Pietikainen <pp@netppl.fi>
  27  *
  28  * TODO:
  29  *   - better SAT support
  30  *
  31  * 980623  Thomas Sailer (sailer@ife.ee.ethz.ch)
  32  *         using soundcore instead of OSS
  33  */
  34 
  35 
  36 #include <linux/kernel.h>
  37 #include <linux/module.h>
  38 #include <linux/slab.h>
  39 #include <linux/i2c.h>
  40 #include <linux/kthread.h>
  41 #include <linux/freezer.h>
  42 #include <linux/videodev2.h>
  43 #include <media/v4l2-device.h>
  44 #include <media/v4l2-ioctl.h>
  45 #include <media/drv-intf/msp3400.h>
  46 #include <media/i2c/tvaudio.h>
  47 #include "msp3400-driver.h"
  48 
  49 /* ---------------------------------------------------------------------- */
  50 
  51 MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
  52 MODULE_AUTHOR("Gerd Knorr");
  53 MODULE_LICENSE("GPL");
  54 
  55 /* module parameters */
  56 static int opmode   = OPMODE_AUTO;
  57 int msp_debug;           /* msp_debug output */
  58 bool msp_once;           /* no continuous stereo monitoring */
  59 bool msp_amsound;        /* hard-wire AM sound at 6.5 Hz (france),
  60                             the autoscan seems work well only with FM... */
  61 int msp_standard = 1;    /* Override auto detect of audio msp_standard,
  62                             if needed. */
  63 bool msp_dolby;
  64 
  65 int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
  66                                         (msp34xxg only) 0x00a0-0x03c0 */
  67 
  68 /* read-only */
  69 module_param(opmode,           int, 0444);
  70 
  71 /* read-write */
  72 module_param_named(once, msp_once,                      bool, 0644);
  73 module_param_named(debug, msp_debug,                    int,  0644);
  74 module_param_named(stereo_threshold, msp_stereo_thresh, int,  0644);
  75 module_param_named(standard, msp_standard,              int,  0644);
  76 module_param_named(amsound, msp_amsound,                bool, 0644);
  77 module_param_named(dolby, msp_dolby,                    bool, 0644);
  78 
  79 MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
  80 MODULE_PARM_DESC(once, "No continuous stereo monitoring");
  81 MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
  82 MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
  83 MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
  84 MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
  85 MODULE_PARM_DESC(dolby, "Activates Dolby processing");
  86 
  87 /* ---------------------------------------------------------------------- */
  88 
  89 /* control subaddress */
  90 #define I2C_MSP_CONTROL 0x00
  91 /* demodulator unit subaddress */
  92 #define I2C_MSP_DEM     0x10
  93 /* DSP unit subaddress */
  94 #define I2C_MSP_DSP     0x12
  95 
  96 
  97 /* ----------------------------------------------------------------------- */
  98 /* functions for talking to the MSP3400C Sound processor                   */
  99 
 100 int msp_reset(struct i2c_client *client)
 101 {
 102         /* reset and read revision code */
 103         static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
 104         static u8 reset_on[3]  = { I2C_MSP_CONTROL, 0x00, 0x00 };
 105         static u8 write[3]     = { I2C_MSP_DSP + 1, 0x00, 0x1e };
 106         u8 read[2];
 107         struct i2c_msg reset[2] = {
 108                 {
 109                         .addr = client->addr,
 110                         .flags = I2C_M_IGNORE_NAK,
 111                         .len = 3,
 112                         .buf = reset_off
 113                 },
 114                 {
 115                         .addr = client->addr,
 116                         .flags = I2C_M_IGNORE_NAK,
 117                         .len = 3,
 118                         .buf = reset_on
 119                 },
 120         };
 121         struct i2c_msg test[2] = {
 122                 {
 123                         .addr = client->addr,
 124                         .len = 3,
 125                         .buf = write
 126                 },
 127                 {
 128                         .addr = client->addr,
 129                         .flags = I2C_M_RD,
 130                         .len = 2,
 131                         .buf = read
 132                 },
 133         };
 134 
 135         dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_reset\n");
 136         if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
 137             i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
 138             i2c_transfer(client->adapter, test, 2) != 2) {
 139                 dev_err(&client->dev, "chip reset failed\n");
 140                 return -1;
 141         }
 142         return 0;
 143 }
 144 
 145 static int msp_read(struct i2c_client *client, int dev, int addr)
 146 {
 147         int err, retval;
 148         u8 write[3];
 149         u8 read[2];
 150         struct i2c_msg msgs[2] = {
 151                 {
 152                         .addr = client->addr,
 153                         .len = 3,
 154                         .buf = write
 155                 },
 156                 {
 157                         .addr = client->addr,
 158                         .flags = I2C_M_RD,
 159                         .len = 2,
 160                         .buf = read
 161                 }
 162         };
 163 
 164         write[0] = dev + 1;
 165         write[1] = addr >> 8;
 166         write[2] = addr & 0xff;
 167 
 168         for (err = 0; err < 3; err++) {
 169                 if (i2c_transfer(client->adapter, msgs, 2) == 2)
 170                         break;
 171                 dev_warn(&client->dev, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
 172                        dev, addr);
 173                 schedule_timeout_interruptible(msecs_to_jiffies(10));
 174         }
 175         if (err == 3) {
 176                 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
 177                 msp_reset(client);
 178                 return -1;
 179         }
 180         retval = read[0] << 8 | read[1];
 181         dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_read(0x%x, 0x%x): 0x%x\n",
 182                         dev, addr, retval);
 183         return retval;
 184 }
 185 
 186 int msp_read_dem(struct i2c_client *client, int addr)
 187 {
 188         return msp_read(client, I2C_MSP_DEM, addr);
 189 }
 190 
 191 int msp_read_dsp(struct i2c_client *client, int addr)
 192 {
 193         return msp_read(client, I2C_MSP_DSP, addr);
 194 }
 195 
 196 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
 197 {
 198         int err;
 199         u8 buffer[5];
 200 
 201         buffer[0] = dev;
 202         buffer[1] = addr >> 8;
 203         buffer[2] = addr &  0xff;
 204         buffer[3] = val  >> 8;
 205         buffer[4] = val  &  0xff;
 206 
 207         dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_write(0x%x, 0x%x, 0x%x)\n",
 208                         dev, addr, val);
 209         for (err = 0; err < 3; err++) {
 210                 if (i2c_master_send(client, buffer, 5) == 5)
 211                         break;
 212                 dev_warn(&client->dev, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
 213                        dev, addr);
 214                 schedule_timeout_interruptible(msecs_to_jiffies(10));
 215         }
 216         if (err == 3) {
 217                 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
 218                 msp_reset(client);
 219                 return -1;
 220         }
 221         return 0;
 222 }
 223 
 224 int msp_write_dem(struct i2c_client *client, int addr, int val)
 225 {
 226         return msp_write(client, I2C_MSP_DEM, addr, val);
 227 }
 228 
 229 int msp_write_dsp(struct i2c_client *client, int addr, int val)
 230 {
 231         return msp_write(client, I2C_MSP_DSP, addr, val);
 232 }
 233 
 234 /* ----------------------------------------------------------------------- *
 235  * bits  9  8  5 - SCART DSP input Select:
 236  *       0  0  0 - SCART 1 to DSP input (reset position)
 237  *       0  1  0 - MONO to DSP input
 238  *       1  0  0 - SCART 2 to DSP input
 239  *       1  1  1 - Mute DSP input
 240  *
 241  * bits 11 10  6 - SCART 1 Output Select:
 242  *       0  0  0 - undefined (reset position)
 243  *       0  1  0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
 244  *       1  0  0 - MONO input to SCART 1 Output
 245  *       1  1  0 - SCART 1 DA to SCART 1 Output
 246  *       0  0  1 - SCART 2 DA to SCART 1 Output
 247  *       0  1  1 - SCART 1 Input to SCART 1 Output
 248  *       1  1  1 - Mute SCART 1 Output
 249  *
 250  * bits 13 12  7 - SCART 2 Output Select (for devices with 2 Output SCART):
 251  *       0  0  0 - SCART 1 DA to SCART 2 Output (reset position)
 252  *       0  1  0 - SCART 1 Input to SCART 2 Output
 253  *       1  0  0 - MONO input to SCART 2 Output
 254  *       0  0  1 - SCART 2 DA to SCART 2 Output
 255  *       0  1  1 - SCART 2 Input to SCART 2 Output
 256  *       1  1  0 - Mute SCART 2 Output
 257  *
 258  * Bits 4 to 0 should be zero.
 259  * ----------------------------------------------------------------------- */
 260 
 261 static int scarts[3][9] = {
 262         /* MASK   IN1     IN2     IN3     IN4     IN1_DA  IN2_DA  MONO    MUTE   */
 263         /* SCART DSP Input select */
 264         { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1,     -1,     0x0100, 0x0320 },
 265         /* SCART1 Output select */
 266         { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
 267         /* SCART2 Output select */
 268         { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
 269 };
 270 
 271 static char *scart_names[] = {
 272         "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
 273 };
 274 
 275 void msp_set_scart(struct i2c_client *client, int in, int out)
 276 {
 277         struct msp_state *state = to_state(i2c_get_clientdata(client));
 278 
 279         state->in_scart = in;
 280 
 281         if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
 282                 if (-1 == scarts[out][in + 1])
 283                         return;
 284 
 285                 state->acb &= ~scarts[out][0];
 286                 state->acb |=  scarts[out][in + 1];
 287         } else
 288                 state->acb = 0xf60; /* Mute Input and SCART 1 Output */
 289 
 290         dev_dbg_lvl(&client->dev, 1, msp_debug, "scart switch: %s => %d (ACB=0x%04x)\n",
 291                                         scart_names[in], out, state->acb);
 292         msp_write_dsp(client, 0x13, state->acb);
 293 
 294         /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
 295         if (state->has_i2s_conf)
 296                 msp_write_dem(client, 0x40, state->i2s_mode);
 297 }
 298 
 299 /* ------------------------------------------------------------------------ */
 300 
 301 static void msp_wake_thread(struct i2c_client *client)
 302 {
 303         struct msp_state *state = to_state(i2c_get_clientdata(client));
 304 
 305         if (NULL == state->kthread)
 306                 return;
 307         state->watch_stereo = 0;
 308         state->restart = 1;
 309         wake_up_interruptible(&state->wq);
 310 }
 311 
 312 int msp_sleep(struct msp_state *state, int timeout)
 313 {
 314         DECLARE_WAITQUEUE(wait, current);
 315 
 316         add_wait_queue(&state->wq, &wait);
 317         if (!kthread_should_stop()) {
 318                 if (timeout < 0) {
 319                         set_current_state(TASK_INTERRUPTIBLE);
 320                         schedule();
 321                 } else {
 322                         schedule_timeout_interruptible
 323                                                 (msecs_to_jiffies(timeout));
 324                 }
 325         }
 326 
 327         remove_wait_queue(&state->wq, &wait);
 328         try_to_freeze();
 329         return state->restart;
 330 }
 331 
 332 /* ------------------------------------------------------------------------ */
 333 
 334 static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
 335 {
 336         struct msp_state *state = ctrl_to_state(ctrl);
 337         struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
 338         int val = ctrl->val;
 339 
 340         switch (ctrl->id) {
 341         case V4L2_CID_AUDIO_VOLUME: {
 342                 /* audio volume cluster */
 343                 int reallymuted = state->muted->val | state->scan_in_progress;
 344 
 345                 if (!reallymuted)
 346                         val = (val * 0x7f / 65535) << 8;
 347 
 348                 dev_dbg_lvl(&client->dev, 1, msp_debug, "mute=%s scanning=%s volume=%d\n",
 349                                 state->muted->val ? "on" : "off",
 350                                 state->scan_in_progress ? "yes" : "no",
 351                                 state->volume->val);
 352 
 353                 msp_write_dsp(client, 0x0000, val);
 354                 msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
 355                 if (state->has_scart2_out_volume)
 356                         msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
 357                 if (state->has_headphones)
 358                         msp_write_dsp(client, 0x0006, val);
 359                 break;
 360         }
 361 
 362         case V4L2_CID_AUDIO_BASS:
 363                 val = ((val - 32768) * 0x60 / 65535) << 8;
 364                 msp_write_dsp(client, 0x0002, val);
 365                 if (state->has_headphones)
 366                         msp_write_dsp(client, 0x0031, val);
 367                 break;
 368 
 369         case V4L2_CID_AUDIO_TREBLE:
 370                 val = ((val - 32768) * 0x60 / 65535) << 8;
 371                 msp_write_dsp(client, 0x0003, val);
 372                 if (state->has_headphones)
 373                         msp_write_dsp(client, 0x0032, val);
 374                 break;
 375 
 376         case V4L2_CID_AUDIO_LOUDNESS:
 377                 val = val ? ((5 * 4) << 8) : 0;
 378                 msp_write_dsp(client, 0x0004, val);
 379                 if (state->has_headphones)
 380                         msp_write_dsp(client, 0x0033, val);
 381                 break;
 382 
 383         case V4L2_CID_AUDIO_BALANCE:
 384                 val = (u8)((val / 256) - 128);
 385                 msp_write_dsp(client, 0x0001, val << 8);
 386                 if (state->has_headphones)
 387                         msp_write_dsp(client, 0x0030, val << 8);
 388                 break;
 389 
 390         default:
 391                 return -EINVAL;
 392         }
 393         return 0;
 394 }
 395 
 396 void msp_update_volume(struct msp_state *state)
 397 {
 398         /* Force an update of the volume/mute cluster */
 399         v4l2_ctrl_lock(state->volume);
 400         state->volume->val = state->volume->cur.val;
 401         state->muted->val = state->muted->cur.val;
 402         msp_s_ctrl(state->volume);
 403         v4l2_ctrl_unlock(state->volume);
 404 }
 405 
 406 /* --- v4l2 ioctls --- */
 407 static int msp_s_radio(struct v4l2_subdev *sd)
 408 {
 409         struct msp_state *state = to_state(sd);
 410         struct i2c_client *client = v4l2_get_subdevdata(sd);
 411 
 412         if (state->radio)
 413                 return 0;
 414         state->radio = 1;
 415         dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to radio mode\n");
 416         state->watch_stereo = 0;
 417         switch (state->opmode) {
 418         case OPMODE_MANUAL:
 419                 /* set msp3400 to FM radio mode */
 420                 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
 421                 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
 422                                 MSP_CARRIER(10.7));
 423                 msp_update_volume(state);
 424                 break;
 425         case OPMODE_AUTODETECT:
 426         case OPMODE_AUTOSELECT:
 427                 /* the thread will do for us */
 428                 msp_wake_thread(client);
 429                 break;
 430         }
 431         return 0;
 432 }
 433 
 434 static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
 435 {
 436         struct i2c_client *client = v4l2_get_subdevdata(sd);
 437 
 438         /* new channel -- kick audio carrier scan */
 439         msp_wake_thread(client);
 440         return 0;
 441 }
 442 
 443 static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
 444 {
 445         struct msp_state *state = to_state(sd);
 446         struct i2c_client *client = v4l2_get_subdevdata(sd);
 447 
 448         *id &= state->detected_std;
 449 
 450         dev_dbg_lvl(&client->dev, 2, msp_debug,
 451                 "detected standard: %s(0x%08Lx)\n",
 452                 msp_standard_std_name(state->std), state->detected_std);
 453 
 454         return 0;
 455 }
 456 
 457 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
 458 {
 459         struct msp_state *state = to_state(sd);
 460         struct i2c_client *client = v4l2_get_subdevdata(sd);
 461         int update = state->radio || state->v4l2_std != id;
 462 
 463         state->v4l2_std = id;
 464         state->radio = 0;
 465         if (update)
 466                 msp_wake_thread(client);
 467         return 0;
 468 }
 469 
 470 static int msp_s_routing(struct v4l2_subdev *sd,
 471                          u32 input, u32 output, u32 config)
 472 {
 473         struct msp_state *state = to_state(sd);
 474         struct i2c_client *client = v4l2_get_subdevdata(sd);
 475         int tuner = (input >> 3) & 1;
 476         int sc_in = input & 0x7;
 477         int sc1_out = output & 0xf;
 478         int sc2_out = (output >> 4) & 0xf;
 479         u16 val, reg;
 480         int i;
 481         int extern_input = 1;
 482 
 483         if (state->route_in == input && state->route_out == output)
 484                 return 0;
 485         state->route_in = input;
 486         state->route_out = output;
 487         /* check if the tuner input is used */
 488         for (i = 0; i < 5; i++) {
 489                 if (((input >> (4 + i * 4)) & 0xf) == 0)
 490                         extern_input = 0;
 491         }
 492         state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
 493         state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 494         msp_set_scart(client, sc_in, 0);
 495         msp_set_scart(client, sc1_out, 1);
 496         msp_set_scart(client, sc2_out, 2);
 497         msp_set_audmode(client);
 498         reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
 499         val = msp_read_dem(client, reg);
 500         msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
 501         /* wake thread when a new input is chosen */
 502         msp_wake_thread(client);
 503         return 0;
 504 }
 505 
 506 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
 507 {
 508         struct msp_state *state = to_state(sd);
 509         struct i2c_client *client = v4l2_get_subdevdata(sd);
 510 
 511         if (vt->type != V4L2_TUNER_ANALOG_TV)
 512                 return 0;
 513         if (!state->radio) {
 514                 if (state->opmode == OPMODE_AUTOSELECT)
 515                         msp_detect_stereo(client);
 516                 vt->rxsubchans = state->rxsubchans;
 517         }
 518         vt->audmode = state->audmode;
 519         vt->capability |= V4L2_TUNER_CAP_STEREO |
 520                 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 521         return 0;
 522 }
 523 
 524 static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
 525 {
 526         struct msp_state *state = to_state(sd);
 527         struct i2c_client *client = v4l2_get_subdevdata(sd);
 528 
 529         if (state->radio)  /* TODO: add mono/stereo support for radio */
 530                 return 0;
 531         if (state->audmode == vt->audmode)
 532                 return 0;
 533         state->audmode = vt->audmode;
 534         /* only set audmode */
 535         msp_set_audmode(client);
 536         return 0;
 537 }
 538 
 539 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
 540 {
 541         struct msp_state *state = to_state(sd);
 542         struct i2c_client *client = v4l2_get_subdevdata(sd);
 543 
 544         dev_dbg_lvl(&client->dev, 1, msp_debug, "Setting I2S speed to %d\n", freq);
 545 
 546         switch (freq) {
 547                 case 1024000:
 548                         state->i2s_mode = 0;
 549                         break;
 550                 case 2048000:
 551                         state->i2s_mode = 1;
 552                         break;
 553                 default:
 554                         return -EINVAL;
 555         }
 556         return 0;
 557 }
 558 
 559 static int msp_log_status(struct v4l2_subdev *sd)
 560 {
 561         struct msp_state *state = to_state(sd);
 562         struct i2c_client *client = v4l2_get_subdevdata(sd);
 563         const char *p;
 564         char prefix[V4L2_SUBDEV_NAME_SIZE + 20];
 565 
 566         if (state->opmode == OPMODE_AUTOSELECT)
 567                 msp_detect_stereo(client);
 568         dev_info(&client->dev, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
 569                         client->name, state->rev1, state->rev2);
 570         snprintf(prefix, sizeof(prefix), "%s: Audio:    ", sd->name);
 571         v4l2_ctrl_handler_log_status(&state->hdl, prefix);
 572         switch (state->mode) {
 573                 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
 574                 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
 575                 case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
 576                 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
 577                 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
 578                 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
 579                 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
 580                 case MSP_MODE_BTSC: p = "BTSC"; break;
 581                 case MSP_MODE_EXTERN: p = "External input"; break;
 582                 default: p = "unknown"; break;
 583         }
 584         if (state->mode == MSP_MODE_EXTERN) {
 585                 dev_info(&client->dev, "Mode:     %s\n", p);
 586         } else if (state->opmode == OPMODE_MANUAL) {
 587                 dev_info(&client->dev, "Mode:     %s (%s%s)\n", p,
 588                                 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
 589                                 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
 590         } else {
 591                 if (state->opmode == OPMODE_AUTODETECT)
 592                         dev_info(&client->dev, "Mode:     %s\n", p);
 593                 dev_info(&client->dev, "Standard: %s (%s%s)\n",
 594                                 msp_standard_std_name(state->std),
 595                                 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
 596                                 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
 597         }
 598         dev_info(&client->dev, "Audmode:  0x%04x\n", state->audmode);
 599         dev_info(&client->dev, "Routing:  0x%08x (input) 0x%08x (output)\n",
 600                         state->route_in, state->route_out);
 601         dev_info(&client->dev, "ACB:      0x%04x\n", state->acb);
 602         return 0;
 603 }
 604 
 605 #ifdef CONFIG_PM_SLEEP
 606 static int msp_suspend(struct device *dev)
 607 {
 608         struct i2c_client *client = to_i2c_client(dev);
 609         dev_dbg_lvl(&client->dev, 1, msp_debug, "suspend\n");
 610         msp_reset(client);
 611         return 0;
 612 }
 613 
 614 static int msp_resume(struct device *dev)
 615 {
 616         struct i2c_client *client = to_i2c_client(dev);
 617         dev_dbg_lvl(&client->dev, 1, msp_debug, "resume\n");
 618         msp_wake_thread(client);
 619         return 0;
 620 }
 621 #endif
 622 
 623 /* ----------------------------------------------------------------------- */
 624 
 625 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
 626         .s_ctrl = msp_s_ctrl,
 627 };
 628 
 629 static const struct v4l2_subdev_core_ops msp_core_ops = {
 630         .log_status = msp_log_status,
 631 };
 632 
 633 static const struct v4l2_subdev_video_ops msp_video_ops = {
 634         .s_std = msp_s_std,
 635         .querystd = msp_querystd,
 636 };
 637 
 638 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
 639         .s_frequency = msp_s_frequency,
 640         .g_tuner = msp_g_tuner,
 641         .s_tuner = msp_s_tuner,
 642         .s_radio = msp_s_radio,
 643 };
 644 
 645 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
 646         .s_routing = msp_s_routing,
 647         .s_i2s_clock_freq = msp_s_i2s_clock_freq,
 648 };
 649 
 650 static const struct v4l2_subdev_ops msp_ops = {
 651         .core = &msp_core_ops,
 652         .video = &msp_video_ops,
 653         .tuner = &msp_tuner_ops,
 654         .audio = &msp_audio_ops,
 655 };
 656 
 657 /* ----------------------------------------------------------------------- */
 658 
 659 
 660 static const char * const opmode_str[] = {
 661         [OPMODE_MANUAL] = "manual",
 662         [OPMODE_AUTODETECT] = "autodetect",
 663         [OPMODE_AUTOSELECT] = "autodetect and autoselect",
 664 };
 665 
 666 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
 667 {
 668         struct msp_state *state;
 669         struct v4l2_subdev *sd;
 670         struct v4l2_ctrl_handler *hdl;
 671         int (*thread_func)(void *data) = NULL;
 672         int msp_hard;
 673         int msp_family;
 674         int msp_revision;
 675         int msp_product, msp_prod_hi, msp_prod_lo;
 676         int msp_rom;
 677 #if defined(CONFIG_MEDIA_CONTROLLER)
 678         int ret;
 679 #endif
 680 
 681         if (!id)
 682                 strscpy(client->name, "msp3400", sizeof(client->name));
 683 
 684         if (msp_reset(client) == -1) {
 685                 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 not found\n");
 686                 return -ENODEV;
 687         }
 688 
 689         state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 690         if (!state)
 691                 return -ENOMEM;
 692 
 693         sd = &state->sd;
 694         v4l2_i2c_subdev_init(sd, client, &msp_ops);
 695 
 696 #if defined(CONFIG_MEDIA_CONTROLLER)
 697         state->pads[MSP3400_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
 698         state->pads[MSP3400_PAD_IF_INPUT].sig_type = PAD_SIGNAL_AUDIO;
 699         state->pads[MSP3400_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
 700         state->pads[MSP3400_PAD_OUT].sig_type = PAD_SIGNAL_AUDIO;
 701 
 702         sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
 703 
 704         ret = media_entity_pads_init(&sd->entity, 2, state->pads);
 705         if (ret < 0)
 706                 return ret;
 707 #endif
 708 
 709         state->v4l2_std = V4L2_STD_NTSC;
 710         state->detected_std = V4L2_STD_ALL;
 711         state->audmode = V4L2_TUNER_MODE_STEREO;
 712         state->input = -1;
 713         state->i2s_mode = 0;
 714         init_waitqueue_head(&state->wq);
 715         /* These are the reset input/output positions */
 716         state->route_in = MSP_INPUT_DEFAULT;
 717         state->route_out = MSP_OUTPUT_DEFAULT;
 718 
 719         state->rev1 = msp_read_dsp(client, 0x1e);
 720         if (state->rev1 != -1)
 721                 state->rev2 = msp_read_dsp(client, 0x1f);
 722         dev_dbg_lvl(&client->dev, 1, msp_debug, "rev1=0x%04x, rev2=0x%04x\n",
 723                         state->rev1, state->rev2);
 724         if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
 725                 dev_dbg_lvl(&client->dev, 1, msp_debug,
 726                                 "not an msp3400 (cannot read chip version)\n");
 727                 return -ENODEV;
 728         }
 729 
 730         msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
 731         msp_product = (state->rev2 >> 8) & 0xff;
 732         msp_prod_hi = msp_product / 10;
 733         msp_prod_lo = msp_product % 10;
 734         msp_revision = (state->rev1 & 0x0f) + '@';
 735         msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
 736         msp_rom = state->rev2 & 0x1f;
 737         /* Rev B=2, C=3, D=4, G=7 */
 738         state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
 739                         msp_revision - '@';
 740 
 741         /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
 742         state->has_nicam =
 743                 msp_prod_hi == 1 || msp_prod_hi == 5;
 744         /* Has radio support: was added with revision G */
 745         state->has_radio =
 746                 msp_revision >= 'G';
 747         /* Has headphones output: not for stripped down products */
 748         state->has_headphones =
 749                 msp_prod_lo < 5;
 750         /* Has scart2 input: not in stripped down products of the '3' family */
 751         state->has_scart2 =
 752                 msp_family >= 4 || msp_prod_lo < 7;
 753         /* Has scart3 input: not in stripped down products of the '3' family */
 754         state->has_scart3 =
 755                 msp_family >= 4 || msp_prod_lo < 5;
 756         /* Has scart4 input: not in pre D revisions, not in stripped D revs */
 757         state->has_scart4 =
 758                 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
 759         /* Has scart2 output: not in stripped down products of
 760          * the '3' family */
 761         state->has_scart2_out =
 762                 msp_family >= 4 || msp_prod_lo < 5;
 763         /* Has scart2 a volume control? Not in pre-D revisions. */
 764         state->has_scart2_out_volume =
 765                 msp_revision > 'C' && state->has_scart2_out;
 766         /* Has a configurable i2s out? */
 767         state->has_i2s_conf =
 768                 msp_revision >= 'G' && msp_prod_lo < 7;
 769         /* Has subwoofer output: not in pre-D revs and not in stripped down
 770          * products */
 771         state->has_subwoofer =
 772                 msp_revision >= 'D' && msp_prod_lo < 5;
 773         /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
 774          *  not in stripped down products */
 775         state->has_sound_processing =
 776                 msp_prod_lo < 7;
 777         /* Has Virtual Dolby Surround: only in msp34x1 */
 778         state->has_virtual_dolby_surround =
 779                 msp_revision == 'G' && msp_prod_lo == 1;
 780         /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
 781         state->has_dolby_pro_logic =
 782                 msp_revision == 'G' && msp_prod_lo == 2;
 783         /* The msp343xG supports BTSC only and cannot do Automatic Standard
 784          * Detection. */
 785         state->force_btsc =
 786                 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
 787 
 788         state->opmode = opmode;
 789         if (state->opmode < OPMODE_MANUAL
 790             || state->opmode > OPMODE_AUTOSELECT) {
 791                 /* MSP revision G and up have both autodetect and autoselect */
 792                 if (msp_revision >= 'G')
 793                         state->opmode = OPMODE_AUTOSELECT;
 794                 /* MSP revision D and up have autodetect */
 795                 else if (msp_revision >= 'D')
 796                         state->opmode = OPMODE_AUTODETECT;
 797                 else
 798                         state->opmode = OPMODE_MANUAL;
 799         }
 800 
 801         hdl = &state->hdl;
 802         v4l2_ctrl_handler_init(hdl, 6);
 803         if (state->has_sound_processing) {
 804                 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 805                         V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
 806                 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 807                         V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
 808                 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 809                         V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
 810         }
 811         state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 812                         V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
 813         v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 814                         V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
 815         state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
 816                         V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
 817         sd->ctrl_handler = hdl;
 818         if (hdl->error) {
 819                 int err = hdl->error;
 820 
 821                 v4l2_ctrl_handler_free(hdl);
 822                 return err;
 823         }
 824 
 825         v4l2_ctrl_cluster(2, &state->volume);
 826         v4l2_ctrl_handler_setup(hdl);
 827 
 828         dev_info(&client->dev,
 829                  "MSP%d4%02d%c-%c%d found on %s: supports %s%s%s, mode is %s\n",
 830                  msp_family, msp_product,
 831                  msp_revision, msp_hard, msp_rom,
 832                  client->adapter->name,
 833                  (state->has_nicam) ? "nicam" : "",
 834                  (state->has_nicam && state->has_radio) ? " and " : "",
 835                  (state->has_radio) ? "radio" : "",
 836                  opmode_str[state->opmode]);
 837 
 838         /* version-specific initialization */
 839         switch (state->opmode) {
 840         case OPMODE_MANUAL:
 841                 thread_func = msp3400c_thread;
 842                 break;
 843         case OPMODE_AUTODETECT:
 844                 thread_func = msp3410d_thread;
 845                 break;
 846         case OPMODE_AUTOSELECT:
 847                 thread_func = msp34xxg_thread;
 848                 break;
 849         }
 850 
 851         /* startup control thread if needed */
 852         if (thread_func) {
 853                 state->kthread = kthread_run(thread_func, client, "msp34xx");
 854 
 855                 if (IS_ERR(state->kthread))
 856                         dev_warn(&client->dev, "kernel_thread() failed\n");
 857                 msp_wake_thread(client);
 858         }
 859         return 0;
 860 }
 861 
 862 static int msp_remove(struct i2c_client *client)
 863 {
 864         struct msp_state *state = to_state(i2c_get_clientdata(client));
 865 
 866         v4l2_device_unregister_subdev(&state->sd);
 867         /* shutdown control thread */
 868         if (state->kthread) {
 869                 state->restart = 1;
 870                 kthread_stop(state->kthread);
 871         }
 872         msp_reset(client);
 873 
 874         v4l2_ctrl_handler_free(&state->hdl);
 875         return 0;
 876 }
 877 
 878 /* ----------------------------------------------------------------------- */
 879 
 880 static const struct dev_pm_ops msp3400_pm_ops = {
 881         SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
 882 };
 883 
 884 static const struct i2c_device_id msp_id[] = {
 885         { "msp3400", 0 },
 886         { }
 887 };
 888 MODULE_DEVICE_TABLE(i2c, msp_id);
 889 
 890 static struct i2c_driver msp_driver = {
 891         .driver = {
 892                 .name   = "msp3400",
 893                 .pm     = &msp3400_pm_ops,
 894         },
 895         .probe          = msp_probe,
 896         .remove         = msp_remove,
 897         .id_table       = msp_id,
 898 };
 899 
 900 module_i2c_driver(msp_driver);

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