LXR linux/drivers/media/i2c/ks0127.c

   1/*
   2 * Video Capture Driver (Video for Linux 1/2)
   3 * for the Matrox Marvel G200,G400 and Rainbow Runner-G series
   4 *
   5 * This module is an interface to the KS0127 video decoder chip.
   6 *
   7 * Copyright (C) 1999  Ryan Drake <stiletto@mediaone.net>
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License
  11 * as published by the Free Software Foundation; either version 2
  12 * of the License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 *****************************************************************************
  20 *
  21 * Modified and extended by
  22 *      Mike Bernson <mike@mlb.org>
  23 *      Gerard v.d. Horst
  24 *      Leon van Stuivenberg <l.vanstuivenberg@chello.nl>
  25 *      Gernot Ziegler <gz@lysator.liu.se>
  26 *
  27 * Version History:
  28 * V1.0 Ryan Drake         Initial version by Ryan Drake
  29 * V1.1 Gerard v.d. Horst  Added some debugoutput, reset the video-standard
  30 */
  31
  32#include <linux/init.h>
  33#include <linux/module.h>
  34#include <linux/delay.h>
  35#include <linux/errno.h>
  36#include <linux/kernel.h>
  37#include <linux/i2c.h>
  38#include <linux/videodev2.h>
  39#include <linux/slab.h>
  40#include <media/v4l2-device.h>
  41#include "ks0127.h"
  42
  43MODULE_DESCRIPTION("KS0127 video decoder driver");
  44MODULE_AUTHOR("Ryan Drake");
  45MODULE_LICENSE("GPL");
  46
  47/* Addresses */
  48#define I2C_KS0127_ADDON   0xD8
  49#define I2C_KS0127_ONBOARD 0xDA
  50
  51
  52/* ks0127 control registers */
  53#define KS_STAT     0x00
  54#define KS_CMDA     0x01
  55#define KS_CMDB     0x02
  56#define KS_CMDC     0x03
  57#define KS_CMDD     0x04
  58#define KS_HAVB     0x05
  59#define KS_HAVE     0x06
  60#define KS_HS1B     0x07
  61#define KS_HS1E     0x08
  62#define KS_HS2B     0x09
  63#define KS_HS2E     0x0a
  64#define KS_AGC      0x0b
  65#define KS_HXTRA    0x0c
  66#define KS_CDEM     0x0d
  67#define KS_PORTAB   0x0e
  68#define KS_LUMA     0x0f
  69#define KS_CON      0x10
  70#define KS_BRT      0x11
  71#define KS_CHROMA   0x12
  72#define KS_CHROMB   0x13
  73#define KS_DEMOD    0x14
  74#define KS_SAT      0x15
  75#define KS_HUE      0x16
  76#define KS_VERTIA   0x17
  77#define KS_VERTIB   0x18
  78#define KS_VERTIC   0x19
  79#define KS_HSCLL    0x1a
  80#define KS_HSCLH    0x1b
  81#define KS_VSCLL    0x1c
  82#define KS_VSCLH    0x1d
  83#define KS_OFMTA    0x1e
  84#define KS_OFMTB    0x1f
  85#define KS_VBICTL   0x20
  86#define KS_CCDAT2   0x21
  87#define KS_CCDAT1   0x22
  88#define KS_VBIL30   0x23
  89#define KS_VBIL74   0x24
  90#define KS_VBIL118  0x25
  91#define KS_VBIL1512 0x26
  92#define KS_TTFRAM   0x27
  93#define KS_TESTA    0x28
  94#define KS_UVOFFH   0x29
  95#define KS_UVOFFL   0x2a
  96#define KS_UGAIN    0x2b
  97#define KS_VGAIN    0x2c
  98#define KS_VAVB     0x2d
  99#define KS_VAVE     0x2e
 100#define KS_CTRACK   0x2f
 101#define KS_POLCTL   0x30
 102#define KS_REFCOD   0x31
 103#define KS_INVALY   0x32
 104#define KS_INVALU   0x33
 105#define KS_INVALV   0x34
 106#define KS_UNUSEY   0x35
 107#define KS_UNUSEU   0x36
 108#define KS_UNUSEV   0x37
 109#define KS_USRSAV   0x38
 110#define KS_USREAV   0x39
 111#define KS_SHS1A    0x3a
 112#define KS_SHS1B    0x3b
 113#define KS_SHS1C    0x3c
 114#define KS_CMDE     0x3d
 115#define KS_VSDEL    0x3e
 116#define KS_CMDF     0x3f
 117#define KS_GAMMA0   0x40
 118#define KS_GAMMA1   0x41
 119#define KS_GAMMA2   0x42
 120#define KS_GAMMA3   0x43
 121#define KS_GAMMA4   0x44
 122#define KS_GAMMA5   0x45
 123#define KS_GAMMA6   0x46
 124#define KS_GAMMA7   0x47
 125#define KS_GAMMA8   0x48
 126#define KS_GAMMA9   0x49
 127#define KS_GAMMA10  0x4a
 128#define KS_GAMMA11  0x4b
 129#define KS_GAMMA12  0x4c
 130#define KS_GAMMA13  0x4d
 131#define KS_GAMMA14  0x4e
 132#define KS_GAMMA15  0x4f
 133#define KS_GAMMA16  0x50
 134#define KS_GAMMA17  0x51
 135#define KS_GAMMA18  0x52
 136#define KS_GAMMA19  0x53
 137#define KS_GAMMA20  0x54
 138#define KS_GAMMA21  0x55
 139#define KS_GAMMA22  0x56
 140#define KS_GAMMA23  0x57
 141#define KS_GAMMA24  0x58
 142#define KS_GAMMA25  0x59
 143#define KS_GAMMA26  0x5a
 144#define KS_GAMMA27  0x5b
 145#define KS_GAMMA28  0x5c
 146#define KS_GAMMA29  0x5d
 147#define KS_GAMMA30  0x5e
 148#define KS_GAMMA31  0x5f
 149#define KS_GAMMAD0  0x60
 150#define KS_GAMMAD1  0x61
 151#define KS_GAMMAD2  0x62
 152#define KS_GAMMAD3  0x63
 153#define KS_GAMMAD4  0x64
 154#define KS_GAMMAD5  0x65
 155#define KS_GAMMAD6  0x66
 156#define KS_GAMMAD7  0x67
 157#define KS_GAMMAD8  0x68
 158#define KS_GAMMAD9  0x69
 159#define KS_GAMMAD10 0x6a
 160#define KS_GAMMAD11 0x6b
 161#define KS_GAMMAD12 0x6c
 162#define KS_GAMMAD13 0x6d
 163#define KS_GAMMAD14 0x6e
 164#define KS_GAMMAD15 0x6f
 165#define KS_GAMMAD16 0x70
 166#define KS_GAMMAD17 0x71
 167#define KS_GAMMAD18 0x72
 168#define KS_GAMMAD19 0x73
 169#define KS_GAMMAD20 0x74
 170#define KS_GAMMAD21 0x75
 171#define KS_GAMMAD22 0x76
 172#define KS_GAMMAD23 0x77
 173#define KS_GAMMAD24 0x78
 174#define KS_GAMMAD25 0x79
 175#define KS_GAMMAD26 0x7a
 176#define KS_GAMMAD27 0x7b
 177#define KS_GAMMAD28 0x7c
 178#define KS_GAMMAD29 0x7d
 179#define KS_GAMMAD30 0x7e
 180#define KS_GAMMAD31 0x7f
 181
 182
 183/****************************************************************************
 184* mga_dev : represents one ks0127 chip.
 185****************************************************************************/
 186
 187struct adjust {
 188        int     contrast;
 189        int     bright;
 190        int     hue;
 191        int     ugain;
 192        int     vgain;
 193};
 194
 195struct ks0127 {
 196        struct v4l2_subdev sd;
 197        v4l2_std_id     norm;
 198        u8              regs[256];
 199};
 200
 201static inline struct ks0127 *to_ks0127(struct v4l2_subdev *sd)
 202{
 203        return container_of(sd, struct ks0127, sd);
 204}
 205
 206
 207static int debug; /* insmod parameter */
 208
 209module_param(debug, int, 0);
 210MODULE_PARM_DESC(debug, "Debug output");
 211
 212static u8 reg_defaults[64];
 213
 214static void init_reg_defaults(void)
 215{
 216        static int initialized;
 217        u8 *table = reg_defaults;
 218
 219        if (initialized)
 220                return;
 221        initialized = 1;
 222
 223        table[KS_CMDA]     = 0x2c;  /* VSE=0, CCIR 601, autodetect standard */
 224        table[KS_CMDB]     = 0x12;  /* VALIGN=0, AGC control and input */
 225        table[KS_CMDC]     = 0x00;  /* Test options */
 226        /* clock & input select, write 1 to PORTA */
 227        table[KS_CMDD]     = 0x01;
 228        table[KS_HAVB]     = 0x00;  /* HAV Start Control */
 229        table[KS_HAVE]     = 0x00;  /* HAV End Control */
 230        table[KS_HS1B]     = 0x10;  /* HS1 Start Control */
 231        table[KS_HS1E]     = 0x00;  /* HS1 End Control */
 232        table[KS_HS2B]     = 0x00;  /* HS2 Start Control */
 233        table[KS_HS2E]     = 0x00;  /* HS2 End Control */
 234        table[KS_AGC]      = 0x53;  /* Manual setting for AGC */
 235        table[KS_HXTRA]    = 0x00;  /* Extra Bits for HAV and HS1/2 */
 236        table[KS_CDEM]     = 0x00;  /* Chroma Demodulation Control */
 237        table[KS_PORTAB]   = 0x0f;  /* port B is input, port A output GPPORT */
 238        table[KS_LUMA]     = 0x01;  /* Luma control */
 239        table[KS_CON]      = 0x00;  /* Contrast Control */
 240        table[KS_BRT]      = 0x00;  /* Brightness Control */
 241        table[KS_CHROMA]   = 0x2a;  /* Chroma control A */
 242        table[KS_CHROMB]   = 0x90;  /* Chroma control B */
 243        table[KS_DEMOD]    = 0x00;  /* Chroma Demodulation Control & Status */
 244        table[KS_SAT]      = 0x00;  /* Color Saturation Control*/
 245        table[KS_HUE]      = 0x00;  /* Hue Control */
 246        table[KS_VERTIA]   = 0x00;  /* Vertical Processing Control A */
 247        /* Vertical Processing Control B, luma 1 line delayed */
 248        table[KS_VERTIB]   = 0x12;
 249        table[KS_VERTIC]   = 0x0b;  /* Vertical Processing Control C */
 250        table[KS_HSCLL]    = 0x00;  /* Horizontal Scaling Ratio Low */
 251        table[KS_HSCLH]    = 0x00;  /* Horizontal Scaling Ratio High */
 252        table[KS_VSCLL]    = 0x00;  /* Vertical Scaling Ratio Low */
 253        table[KS_VSCLH]    = 0x00;  /* Vertical Scaling Ratio High */
 254        /* 16 bit YCbCr 4:2:2 output; I can't make the bt866 like 8 bit /Sam */
 255        table[KS_OFMTA]    = 0x30;
 256        table[KS_OFMTB]    = 0x00;  /* Output Control B */
 257        /* VBI Decoder Control; 4bit fmt: avoid Y overflow */
 258        table[KS_VBICTL]   = 0x5d;
 259        table[KS_CCDAT2]   = 0x00;  /* Read Only register */
 260        table[KS_CCDAT1]   = 0x00;  /* Read Only register */
 261        table[KS_VBIL30]   = 0xa8;  /* VBI data decoding options */
 262        table[KS_VBIL74]   = 0xaa;  /* VBI data decoding options */
 263        table[KS_VBIL118]  = 0x2a;  /* VBI data decoding options */
 264        table[KS_VBIL1512] = 0x00;  /* VBI data decoding options */
 265        table[KS_TTFRAM]   = 0x00;  /* Teletext frame alignment pattern */
 266        table[KS_TESTA]    = 0x00;  /* test register, shouldn't be written */
 267        table[KS_UVOFFH]   = 0x00;  /* UV Offset Adjustment High */
 268        table[KS_UVOFFL]   = 0x00;  /* UV Offset Adjustment Low */
 269        table[KS_UGAIN]    = 0x00;  /* U Component Gain Adjustment */
 270        table[KS_VGAIN]    = 0x00;  /* V Component Gain Adjustment */
 271        table[KS_VAVB]     = 0x07;  /* VAV Begin */
 272        table[KS_VAVE]     = 0x00;  /* VAV End */
 273        table[KS_CTRACK]   = 0x00;  /* Chroma Tracking Control */
 274        table[KS_POLCTL]   = 0x41;  /* Timing Signal Polarity Control */
 275        table[KS_REFCOD]   = 0x80;  /* Reference Code Insertion Control */
 276        table[KS_INVALY]   = 0x10;  /* Invalid Y Code */
 277        table[KS_INVALU]   = 0x80;  /* Invalid U Code */
 278        table[KS_INVALV]   = 0x80;  /* Invalid V Code */
 279        table[KS_UNUSEY]   = 0x10;  /* Unused Y Code */
 280        table[KS_UNUSEU]   = 0x80;  /* Unused U Code */
 281        table[KS_UNUSEV]   = 0x80;  /* Unused V Code */
 282        table[KS_USRSAV]   = 0x00;  /* reserved */
 283        table[KS_USREAV]   = 0x00;  /* reserved */
 284        table[KS_SHS1A]    = 0x00;  /* User Defined SHS1 A */
 285        /* User Defined SHS1 B, ALT656=1 on 0127B */
 286        table[KS_SHS1B]    = 0x80;
 287        table[KS_SHS1C]    = 0x00;  /* User Defined SHS1 C */
 288        table[KS_CMDE]     = 0x00;  /* Command Register E */
 289        table[KS_VSDEL]    = 0x00;  /* VS Delay Control */
 290        /* Command Register F, update -immediately- */
 291        /* (there might come no vsync)*/
 292        table[KS_CMDF]     = 0x02;
 293}
 294
 295
 296/* We need to manually read because of a bug in the KS0127 chip.
 297 *
 298 * An explanation from kayork@mail.utexas.edu:
 299 *
 300 * During I2C reads, the KS0127 only samples for a stop condition
 301 * during the place where the acknowledge bit should be. Any standard
 302 * I2C implementation (correctly) throws in another clock transition
 303 * at the 9th bit, and the KS0127 will not recognize the stop condition
 304 * and will continue to clock out data.
 305 *
 306 * So we have to do the read ourself.  Big deal.
 307 *         workaround in i2c-algo-bit
 308 */
 309
 310
 311static u8 ks0127_read(struct v4l2_subdev *sd, u8 reg)
 312{
 313        struct i2c_client *client = v4l2_get_subdevdata(sd);
 314        char val = 0;
 315        struct i2c_msg msgs[] = {
 316                {
 317                        .addr = client->addr,
 318                        .len = sizeof(reg),
 319                        .buf = &reg
 320                },
 321                {
 322                        .addr = client->addr,
 323                        .flags = I2C_M_RD | I2C_M_NO_RD_ACK,
 324                        .len = sizeof(val),
 325                        .buf = &val
 326                }
 327        };
 328        int ret;
 329
 330        ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
 331        if (ret != ARRAY_SIZE(msgs))
 332                v4l2_dbg(1, debug, sd, "read error\n");
 333
 334        return val;
 335}
 336
 337
 338static void ks0127_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 339{
 340        struct i2c_client *client = v4l2_get_subdevdata(sd);
 341        struct ks0127 *ks = to_ks0127(sd);
 342        char msg[] = { reg, val };
 343
 344        if (i2c_master_send(client, msg, sizeof(msg)) != sizeof(msg))
 345                v4l2_dbg(1, debug, sd, "write error\n");
 346
 347        ks->regs[reg] = val;
 348}
 349
 350
 351/* generic bit-twiddling */
 352static void ks0127_and_or(struct v4l2_subdev *sd, u8 reg, u8 and_v, u8 or_v)
 353{
 354        struct ks0127 *ks = to_ks0127(sd);
 355
 356        u8 val = ks->regs[reg];
 357        val = (val & and_v) | or_v;
 358        ks0127_write(sd, reg, val);
 359}
 360
 361
 362
 363/****************************************************************************
 364* ks0127 private api
 365****************************************************************************/
 366static void ks0127_init(struct v4l2_subdev *sd)
 367{
 368        u8 *table = reg_defaults;
 369        int i;
 370
 371        v4l2_dbg(1, debug, sd, "reset\n");
 372        msleep(1);
 373
 374        /* initialize all registers to known values */
 375        /* (except STAT, 0x21, 0x22, TEST and 0x38,0x39) */
 376
 377        for (i = 1; i < 33; i++)
 378                ks0127_write(sd, i, table[i]);
 379
 380        for (i = 35; i < 40; i++)
 381                ks0127_write(sd, i, table[i]);
 382
 383        for (i = 41; i < 56; i++)
 384                ks0127_write(sd, i, table[i]);
 385
 386        for (i = 58; i < 64; i++)
 387                ks0127_write(sd, i, table[i]);
 388
 389
 390        if ((ks0127_read(sd, KS_STAT) & 0x80) == 0) {
 391                v4l2_dbg(1, debug, sd, "ks0122s found\n");
 392                return;
 393        }
 394
 395        switch (ks0127_read(sd, KS_CMDE) & 0x0f) {
 396        case 0:
 397                v4l2_dbg(1, debug, sd, "ks0127 found\n");
 398                break;
 399
 400        case 9:
 401                v4l2_dbg(1, debug, sd, "ks0127B Revision A found\n");
 402                break;
 403
 404        default:
 405                v4l2_dbg(1, debug, sd, "unknown revision\n");
 406                break;
 407        }
 408}
 409
 410static int ks0127_s_routing(struct v4l2_subdev *sd,
 411                            u32 input, u32 output, u32 config)
 412{
 413        struct ks0127 *ks = to_ks0127(sd);
 414
 415        switch (input) {
 416        case KS_INPUT_COMPOSITE_1:
 417        case KS_INPUT_COMPOSITE_2:
 418        case KS_INPUT_COMPOSITE_3:
 419        case KS_INPUT_COMPOSITE_4:
 420        case KS_INPUT_COMPOSITE_5:
 421        case KS_INPUT_COMPOSITE_6:
 422                v4l2_dbg(1, debug, sd,
 423                        "s_routing %d: Composite\n", input);
 424                /* autodetect 50/60 Hz */
 425                ks0127_and_or(sd, KS_CMDA,   0xfc, 0x00);
 426                /* VSE=0 */
 427                ks0127_and_or(sd, KS_CMDA,   ~0x40, 0x00);
 428                /* set input line */
 429                ks0127_and_or(sd, KS_CMDB,   0xb0, input);
 430                /* non-freerunning mode */
 431                ks0127_and_or(sd, KS_CMDC,   0x70, 0x0a);
 432                /* analog input */
 433                ks0127_and_or(sd, KS_CMDD,   0x03, 0x00);
 434                /* enable chroma demodulation */
 435                ks0127_and_or(sd, KS_CTRACK, 0xcf, 0x00);
 436                /* chroma trap, HYBWR=1 */
 437                ks0127_and_or(sd, KS_LUMA,   0x00,
 438                               (reg_defaults[KS_LUMA])|0x0c);
 439                /* scaler fullbw, luma comb off */
 440                ks0127_and_or(sd, KS_VERTIA, 0x08, 0x81);
 441                /* manual chroma comb .25 .5 .25 */
 442                ks0127_and_or(sd, KS_VERTIC, 0x0f, 0x90);
 443
 444                /* chroma path delay */
 445                ks0127_and_or(sd, KS_CHROMB, 0x0f, 0x90);
 446
 447                ks0127_write(sd, KS_UGAIN, reg_defaults[KS_UGAIN]);
 448                ks0127_write(sd, KS_VGAIN, reg_defaults[KS_VGAIN]);
 449                ks0127_write(sd, KS_UVOFFH, reg_defaults[KS_UVOFFH]);
 450                ks0127_write(sd, KS_UVOFFL, reg_defaults[KS_UVOFFL]);
 451                break;
 452
 453        case KS_INPUT_SVIDEO_1:
 454        case KS_INPUT_SVIDEO_2:
 455        case KS_INPUT_SVIDEO_3:
 456                v4l2_dbg(1, debug, sd,
 457                        "s_routing %d: S-Video\n", input);
 458                /* autodetect 50/60 Hz */
 459                ks0127_and_or(sd, KS_CMDA,   0xfc, 0x00);
 460                /* VSE=0 */
 461                ks0127_and_or(sd, KS_CMDA,   ~0x40, 0x00);
 462                /* set input line */
 463                ks0127_and_or(sd, KS_CMDB,   0xb0, input);
 464                /* non-freerunning mode */
 465                ks0127_and_or(sd, KS_CMDC,   0x70, 0x0a);
 466                /* analog input */
 467                ks0127_and_or(sd, KS_CMDD,   0x03, 0x00);
 468                /* enable chroma demodulation */
 469                ks0127_and_or(sd, KS_CTRACK, 0xcf, 0x00);
 470                ks0127_and_or(sd, KS_LUMA, 0x00,
 471                               reg_defaults[KS_LUMA]);
 472                /* disable luma comb */
 473                ks0127_and_or(sd, KS_VERTIA, 0x08,
 474                               (reg_defaults[KS_VERTIA]&0xf0)|0x01);
 475                ks0127_and_or(sd, KS_VERTIC, 0x0f,
 476                               reg_defaults[KS_VERTIC]&0xf0);
 477
 478                ks0127_and_or(sd, KS_CHROMB, 0x0f,
 479                               reg_defaults[KS_CHROMB]&0xf0);
 480
 481                ks0127_write(sd, KS_UGAIN, reg_defaults[KS_UGAIN]);
 482                ks0127_write(sd, KS_VGAIN, reg_defaults[KS_VGAIN]);
 483                ks0127_write(sd, KS_UVOFFH, reg_defaults[KS_UVOFFH]);
 484                ks0127_write(sd, KS_UVOFFL, reg_defaults[KS_UVOFFL]);
 485                break;
 486
 487        case KS_INPUT_YUV656:
 488                v4l2_dbg(1, debug, sd, "s_routing 15: YUV656\n");
 489                if (ks->norm & V4L2_STD_525_60)
 490                        /* force 60 Hz */
 491                        ks0127_and_or(sd, KS_CMDA,   0xfc, 0x03);
 492                else
 493                        /* force 50 Hz */
 494                        ks0127_and_or(sd, KS_CMDA,   0xfc, 0x02);
 495
 496                ks0127_and_or(sd, KS_CMDA,   0xff, 0x40); /* VSE=1 */
 497                /* set input line and VALIGN */
 498                ks0127_and_or(sd, KS_CMDB,   0xb0, (input | 0x40));
 499                /* freerunning mode, */
 500                /* TSTGEN = 1 TSTGFR=11 TSTGPH=0 TSTGPK=0  VMEM=1*/
 501                ks0127_and_or(sd, KS_CMDC,   0x70, 0x87);
 502                /* digital input, SYNDIR = 0 INPSL=01 CLKDIR=0 EAV=0 */
 503                ks0127_and_or(sd, KS_CMDD,   0x03, 0x08);
 504                /* disable chroma demodulation */
 505                ks0127_and_or(sd, KS_CTRACK, 0xcf, 0x30);
 506                /* HYPK =01 CTRAP = 0 HYBWR=0 PED=1 RGBH=1 UNIT=1 */
 507                ks0127_and_or(sd, KS_LUMA,   0x00, 0x71);
 508                ks0127_and_or(sd, KS_VERTIC, 0x0f,
 509                               reg_defaults[KS_VERTIC]&0xf0);
 510
 511                /* scaler fullbw, luma comb off */
 512                ks0127_and_or(sd, KS_VERTIA, 0x08, 0x81);
 513
 514                ks0127_and_or(sd, KS_CHROMB, 0x0f,
 515                               reg_defaults[KS_CHROMB]&0xf0);
 516
 517                ks0127_and_or(sd, KS_CON, 0x00, 0x00);
 518                ks0127_and_or(sd, KS_BRT, 0x00, 32);    /* spec: 34 */
 519                        /* spec: 229 (e5) */
 520                ks0127_and_or(sd, KS_SAT, 0x00, 0xe8);
 521                ks0127_and_or(sd, KS_HUE, 0x00, 0);
 522
 523                ks0127_and_or(sd, KS_UGAIN, 0x00, 238);
 524                ks0127_and_or(sd, KS_VGAIN, 0x00, 0x00);
 525
 526                /*UOFF:0x30, VOFF:0x30, TSTCGN=1 */
 527                ks0127_and_or(sd, KS_UVOFFH, 0x00, 0x4f);
 528                ks0127_and_or(sd, KS_UVOFFL, 0x00, 0x00);
 529                break;
 530
 531        default:
 532                v4l2_dbg(1, debug, sd,
 533                        "s_routing: Unknown input %d\n", input);
 534                break;
 535        }
 536
 537        /* hack: CDMLPF sometimes spontaneously switches on; */
 538        /* force back off */
 539        ks0127_write(sd, KS_DEMOD, reg_defaults[KS_DEMOD]);
 540        return 0;
 541}
 542
 543static int ks0127_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 544{
 545        struct ks0127 *ks = to_ks0127(sd);
 546
 547        /* Set to automatic SECAM/Fsc mode */
 548        ks0127_and_or(sd, KS_DEMOD, 0xf0, 0x00);
 549
 550        ks->norm = std;
 551        if (std & V4L2_STD_NTSC) {
 552                v4l2_dbg(1, debug, sd,
 553                        "s_std: NTSC_M\n");
 554                ks0127_and_or(sd, KS_CHROMA, 0x9f, 0x20);
 555        } else if (std & V4L2_STD_PAL_N) {
 556                v4l2_dbg(1, debug, sd,
 557                        "s_std: NTSC_N (fixme)\n");
 558                ks0127_and_or(sd, KS_CHROMA, 0x9f, 0x40);
 559        } else if (std & V4L2_STD_PAL) {
 560                v4l2_dbg(1, debug, sd,
 561                        "s_std: PAL_N\n");
 562                ks0127_and_or(sd, KS_CHROMA, 0x9f, 0x20);
 563        } else if (std & V4L2_STD_PAL_M) {
 564                v4l2_dbg(1, debug, sd,
 565                        "s_std: PAL_M (fixme)\n");
 566                ks0127_and_or(sd, KS_CHROMA, 0x9f, 0x40);
 567        } else if (std & V4L2_STD_SECAM) {
 568                v4l2_dbg(1, debug, sd,
 569                        "s_std: SECAM\n");
 570
 571                /* set to secam autodetection */
 572                ks0127_and_or(sd, KS_CHROMA, 0xdf, 0x20);
 573                ks0127_and_or(sd, KS_DEMOD, 0xf0, 0x00);
 574                schedule_timeout_interruptible(HZ/10+1);
 575
 576                /* did it autodetect? */
 577                if (!(ks0127_read(sd, KS_DEMOD) & 0x40))
 578                        /* force to secam mode */
 579                        ks0127_and_or(sd, KS_DEMOD, 0xf0, 0x0f);
 580        } else {
 581                v4l2_dbg(1, debug, sd, "s_std: Unknown norm %llx\n",
 582                               (unsigned long long)std);
 583        }
 584        return 0;
 585}
 586
 587static int ks0127_s_stream(struct v4l2_subdev *sd, int enable)
 588{
 589        v4l2_dbg(1, debug, sd, "s_stream(%d)\n", enable);
 590        if (enable) {
 591                /* All output pins on */
 592                ks0127_and_or(sd, KS_OFMTA, 0xcf, 0x30);
 593                /* Obey the OEN pin */
 594                ks0127_and_or(sd, KS_CDEM, 0x7f, 0x00);
 595        } else {
 596                /* Video output pins off */
 597                ks0127_and_or(sd, KS_OFMTA, 0xcf, 0x00);
 598                /* Ignore the OEN pin */
 599                ks0127_and_or(sd, KS_CDEM, 0x7f, 0x80);
 600        }
 601        return 0;
 602}
 603
 604static int ks0127_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
 605{
 606        int stat = V4L2_IN_ST_NO_SIGNAL;
 607        u8 status;
 608        v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;
 609
 610        status = ks0127_read(sd, KS_STAT);
 611        if (!(status & 0x20))            /* NOVID not set */
 612                stat = 0;
 613        if (!(status & 0x01)) {               /* CLOCK set */
 614                stat |= V4L2_IN_ST_NO_COLOR;
 615                std = V4L2_STD_UNKNOWN;
 616        } else {
 617                if ((status & 0x08))               /* PALDET set */
 618                        std &= V4L2_STD_PAL;
 619                else
 620                        std &= V4L2_STD_NTSC;
 621        }
 622        if ((status & 0x10))               /* PALDET set */
 623                std &= V4L2_STD_525_60;
 624        else
 625                std &= V4L2_STD_625_50;
 626        if (pstd)
 627                *pstd = std;
 628        if (pstatus)
 629                *pstatus = stat;
 630        return 0;
 631}
 632
 633static int ks0127_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
 634{
 635        v4l2_dbg(1, debug, sd, "querystd\n");
 636        return ks0127_status(sd, NULL, std);
 637}
 638
 639static int ks0127_g_input_status(struct v4l2_subdev *sd, u32 *status)
 640{
 641        v4l2_dbg(1, debug, sd, "g_input_status\n");
 642        return ks0127_status(sd, status, NULL);
 643}
 644
 645/* ----------------------------------------------------------------------- */
 646
 647static const struct v4l2_subdev_video_ops ks0127_video_ops = {
 648        .s_std = ks0127_s_std,
 649        .s_routing = ks0127_s_routing,
 650        .s_stream = ks0127_s_stream,
 651        .querystd = ks0127_querystd,
 652        .g_input_status = ks0127_g_input_status,
 653};
 654
 655static const struct v4l2_subdev_ops ks0127_ops = {
 656        .video = &ks0127_video_ops,
 657};
 658
 659/* ----------------------------------------------------------------------- */
 660
 661
 662static int ks0127_probe(struct i2c_client *client, const struct i2c_device_id *id)
 663{
 664        struct ks0127 *ks;
 665        struct v4l2_subdev *sd;
 666
 667        v4l_info(client, "%s chip found @ 0x%x (%s)\n",
 668                client->addr == (I2C_KS0127_ADDON >> 1) ? "addon" : "on-board",
 669                client->addr << 1, client->adapter->name);
 670
 671        ks = devm_kzalloc(&client->dev, sizeof(*ks), GFP_KERNEL);
 672        if (ks == NULL)
 673                return -ENOMEM;
 674        sd = &ks->sd;
 675        v4l2_i2c_subdev_init(sd, client, &ks0127_ops);
 676
 677        /* power up */
 678        init_reg_defaults();
 679        ks0127_write(sd, KS_CMDA, 0x2c);
 680        mdelay(10);
 681
 682        /* reset the device */
 683        ks0127_init(sd);
 684        return 0;
 685}
 686
 687static int ks0127_remove(struct i2c_client *client)
 688{
 689        struct v4l2_subdev *sd = i2c_get_clientdata(client);
 690
 691        v4l2_device_unregister_subdev(sd);
 692        ks0127_write(sd, KS_OFMTA, 0x20); /* tristate */
 693        ks0127_write(sd, KS_CMDA, 0x2c | 0x80); /* power down */
 694        return 0;
 695}
 696
 697static const struct i2c_device_id ks0127_id[] = {
 698        { "ks0127", 0 },
 699        { "ks0127b", 0 },
 700        { "ks0122s", 0 },
 701        { }
 702};
 703MODULE_DEVICE_TABLE(i2c, ks0127_id);
 704
 705static struct i2c_driver ks0127_driver = {
 706        .driver = {
 707                .name   = "ks0127",
 708        },
 709        .probe          = ks0127_probe,
 710        .remove         = ks0127_remove,
 711        .id_table       = ks0127_id,
 712};
 713
 714module_i2c_driver(ks0127_driver);
 715