drivers/media/i2c/saa7127.c

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This source file includes following definitions.
to_state
saa7127_read
saa7127_write
saa7127_write_inittab
saa7127_set_vps
saa7127_set_cc
saa7127_set_xds
saa7127_set_wss
saa7127_set_video_enable
saa7127_set_std
saa7127_set_output_type
saa7127_set_input_type
saa7127_s_std_output
saa7127_s_routing
saa7127_s_stream
saa7127_g_sliced_fmt
saa7127_s_vbi_data
saa7127_g_register
saa7127_s_register
saa7127_log_status
saa7127_probe
saa7127_remove
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * saa7127 - Philips SAA7127/SAA7129 video encoder driver
   4  *
   5  * Copyright (C) 2003 Roy Bulter <rbulter@hetnet.nl>
   6  *
   7  * Based on SAA7126 video encoder driver by Gillem & Andreas Oberritter
   8  *
   9  * Copyright (C) 2000-2001 Gillem <htoa@gmx.net>
  10  * Copyright (C) 2002 Andreas Oberritter <obi@saftware.de>
  11  *
  12  * Based on Stadis 4:2:2 MPEG-2 Decoder Driver by Nathan Laredo
  13  *
  14  * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org>
  15  *
  16  * This driver is designed for the Hauppauge 250/350 Linux driver
  17  * from the ivtv Project
  18  *
  19  * Copyright (C) 2003 Kevin Thayer <nufan_wfk@yahoo.com>
  20  *
  21  * Dual output support:
  22  * Copyright (C) 2004 Eric Varsanyi
  23  *
  24  * NTSC Tuning and 7.5 IRE Setup
  25  * Copyright (C) 2004  Chris Kennedy <c@groovy.org>
  26  *
  27  * VBI additions & cleanup:
  28  * Copyright (C) 2004, 2005 Hans Verkuil <hverkuil@xs4all.nl>
  29  *
  30  * Note: the saa7126 is identical to the saa7127, and the saa7128 is
  31  * identical to the saa7129, except that the saa7126 and saa7128 have
  32  * macrovision anti-taping support. This driver will almost certainly
  33  * work fine for those chips, except of course for the missing anti-taping
  34  * support.
  35  */
  36 
  37 
  38 #include <linux/kernel.h>
  39 #include <linux/module.h>
  40 #include <linux/slab.h>
  41 #include <linux/i2c.h>
  42 #include <linux/videodev2.h>
  43 #include <media/v4l2-device.h>
  44 #include <media/i2c/saa7127.h>
  45 
  46 static int debug;
  47 static int test_image;
  48 
  49 MODULE_DESCRIPTION("Philips SAA7127/9 video encoder driver");
  50 MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil");
  51 MODULE_LICENSE("GPL");
  52 module_param(debug, int, 0644);
  53 module_param(test_image, int, 0644);
  54 MODULE_PARM_DESC(debug, "debug level (0-2)");
  55 MODULE_PARM_DESC(test_image, "test_image (0-1)");
  56 
  57 
  58 /*
  59  * SAA7127 registers
  60  */
  61 
  62 #define SAA7127_REG_STATUS                           0x00
  63 #define SAA7127_REG_WIDESCREEN_CONFIG                0x26
  64 #define SAA7127_REG_WIDESCREEN_ENABLE                0x27
  65 #define SAA7127_REG_BURST_START                      0x28
  66 #define SAA7127_REG_BURST_END                        0x29
  67 #define SAA7127_REG_COPYGEN_0                        0x2a
  68 #define SAA7127_REG_COPYGEN_1                        0x2b
  69 #define SAA7127_REG_COPYGEN_2                        0x2c
  70 #define SAA7127_REG_OUTPUT_PORT_CONTROL              0x2d
  71 #define SAA7127_REG_GAIN_LUMINANCE_RGB               0x38
  72 #define SAA7127_REG_GAIN_COLORDIFF_RGB               0x39
  73 #define SAA7127_REG_INPUT_PORT_CONTROL_1             0x3a
  74 #define SAA7129_REG_FADE_KEY_COL2                    0x4f
  75 #define SAA7127_REG_CHROMA_PHASE                     0x5a
  76 #define SAA7127_REG_GAINU                            0x5b
  77 #define SAA7127_REG_GAINV                            0x5c
  78 #define SAA7127_REG_BLACK_LEVEL                      0x5d
  79 #define SAA7127_REG_BLANKING_LEVEL                   0x5e
  80 #define SAA7127_REG_VBI_BLANKING                     0x5f
  81 #define SAA7127_REG_DAC_CONTROL                      0x61
  82 #define SAA7127_REG_BURST_AMP                        0x62
  83 #define SAA7127_REG_SUBC3                            0x63
  84 #define SAA7127_REG_SUBC2                            0x64
  85 #define SAA7127_REG_SUBC1                            0x65
  86 #define SAA7127_REG_SUBC0                            0x66
  87 #define SAA7127_REG_LINE_21_ODD_0                    0x67
  88 #define SAA7127_REG_LINE_21_ODD_1                    0x68
  89 #define SAA7127_REG_LINE_21_EVEN_0                   0x69
  90 #define SAA7127_REG_LINE_21_EVEN_1                   0x6a
  91 #define SAA7127_REG_RCV_PORT_CONTROL                 0x6b
  92 #define SAA7127_REG_VTRIG                            0x6c
  93 #define SAA7127_REG_HTRIG_HI                         0x6d
  94 #define SAA7127_REG_MULTI                            0x6e
  95 #define SAA7127_REG_CLOSED_CAPTION                   0x6f
  96 #define SAA7127_REG_RCV2_OUTPUT_START                0x70
  97 #define SAA7127_REG_RCV2_OUTPUT_END                  0x71
  98 #define SAA7127_REG_RCV2_OUTPUT_MSBS                 0x72
  99 #define SAA7127_REG_TTX_REQUEST_H_START              0x73
 100 #define SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH       0x74
 101 #define SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT        0x75
 102 #define SAA7127_REG_TTX_ODD_REQ_VERT_START           0x76
 103 #define SAA7127_REG_TTX_ODD_REQ_VERT_END             0x77
 104 #define SAA7127_REG_TTX_EVEN_REQ_VERT_START          0x78
 105 #define SAA7127_REG_TTX_EVEN_REQ_VERT_END            0x79
 106 #define SAA7127_REG_FIRST_ACTIVE                     0x7a
 107 #define SAA7127_REG_LAST_ACTIVE                      0x7b
 108 #define SAA7127_REG_MSB_VERTICAL                     0x7c
 109 #define SAA7127_REG_DISABLE_TTX_LINE_LO_0            0x7e
 110 #define SAA7127_REG_DISABLE_TTX_LINE_LO_1            0x7f
 111 
 112 /*
 113  **********************************************************************
 114  *
 115  *  Arrays with configuration parameters for the SAA7127
 116  *
 117  **********************************************************************
 118  */
 119 
 120 struct i2c_reg_value {
 121         unsigned char reg;
 122         unsigned char value;
 123 };
 124 
 125 static const struct i2c_reg_value saa7129_init_config_extra[] = {
 126         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0x38 },
 127         { SAA7127_REG_VTRIG,                            0xfa },
 128         { 0, 0 }
 129 };
 130 
 131 static const struct i2c_reg_value saa7127_init_config_common[] = {
 132         { SAA7127_REG_WIDESCREEN_CONFIG,                0x0d },
 133         { SAA7127_REG_WIDESCREEN_ENABLE,                0x00 },
 134         { SAA7127_REG_COPYGEN_0,                        0x77 },
 135         { SAA7127_REG_COPYGEN_1,                        0x41 },
 136         { SAA7127_REG_COPYGEN_2,                        0x00 }, /* Macrovision enable/disable */
 137         { SAA7127_REG_OUTPUT_PORT_CONTROL,              0xbf },
 138         { SAA7127_REG_GAIN_LUMINANCE_RGB,               0x00 },
 139         { SAA7127_REG_GAIN_COLORDIFF_RGB,               0x00 },
 140         { SAA7127_REG_INPUT_PORT_CONTROL_1,             0x80 }, /* for color bars */
 141         { SAA7127_REG_LINE_21_ODD_0,                    0x77 },
 142         { SAA7127_REG_LINE_21_ODD_1,                    0x41 },
 143         { SAA7127_REG_LINE_21_EVEN_0,                   0x88 },
 144         { SAA7127_REG_LINE_21_EVEN_1,                   0x41 },
 145         { SAA7127_REG_RCV_PORT_CONTROL,                 0x12 },
 146         { SAA7127_REG_VTRIG,                            0xf9 },
 147         { SAA7127_REG_HTRIG_HI,                         0x00 },
 148         { SAA7127_REG_RCV2_OUTPUT_START,                0x41 },
 149         { SAA7127_REG_RCV2_OUTPUT_END,                  0xc3 },
 150         { SAA7127_REG_RCV2_OUTPUT_MSBS,                 0x00 },
 151         { SAA7127_REG_TTX_REQUEST_H_START,              0x3e },
 152         { SAA7127_REG_TTX_REQUEST_H_DELAY_LENGTH,       0xb8 },
 153         { SAA7127_REG_CSYNC_ADVANCE_VSYNC_SHIFT,        0x03 },
 154         { SAA7127_REG_TTX_ODD_REQ_VERT_START,           0x15 },
 155         { SAA7127_REG_TTX_ODD_REQ_VERT_END,             0x16 },
 156         { SAA7127_REG_TTX_EVEN_REQ_VERT_START,          0x15 },
 157         { SAA7127_REG_TTX_EVEN_REQ_VERT_END,            0x16 },
 158         { SAA7127_REG_FIRST_ACTIVE,                     0x1a },
 159         { SAA7127_REG_LAST_ACTIVE,                      0x01 },
 160         { SAA7127_REG_MSB_VERTICAL,                     0xc0 },
 161         { SAA7127_REG_DISABLE_TTX_LINE_LO_0,            0x00 },
 162         { SAA7127_REG_DISABLE_TTX_LINE_LO_1,            0x00 },
 163         { 0, 0 }
 164 };
 165 
 166 #define SAA7127_60HZ_DAC_CONTROL 0x15
 167 static const struct i2c_reg_value saa7127_init_config_60hz[] = {
 168         { SAA7127_REG_BURST_START,                      0x19 },
 169         /* BURST_END is also used as a chip ID in saa7127_probe */
 170         { SAA7127_REG_BURST_END,                        0x1d },
 171         { SAA7127_REG_CHROMA_PHASE,                     0xa3 },
 172         { SAA7127_REG_GAINU,                            0x98 },
 173         { SAA7127_REG_GAINV,                            0xd3 },
 174         { SAA7127_REG_BLACK_LEVEL,                      0x39 },
 175         { SAA7127_REG_BLANKING_LEVEL,                   0x2e },
 176         { SAA7127_REG_VBI_BLANKING,                     0x2e },
 177         { SAA7127_REG_DAC_CONTROL,                      0x15 },
 178         { SAA7127_REG_BURST_AMP,                        0x4d },
 179         { SAA7127_REG_SUBC3,                            0x1f },
 180         { SAA7127_REG_SUBC2,                            0x7c },
 181         { SAA7127_REG_SUBC1,                            0xf0 },
 182         { SAA7127_REG_SUBC0,                            0x21 },
 183         { SAA7127_REG_MULTI,                            0x90 },
 184         { SAA7127_REG_CLOSED_CAPTION,                   0x11 },
 185         { 0, 0 }
 186 };
 187 
 188 #define SAA7127_50HZ_PAL_DAC_CONTROL 0x02
 189 static struct i2c_reg_value saa7127_init_config_50hz_pal[] = {
 190         { SAA7127_REG_BURST_START,                      0x21 },
 191         /* BURST_END is also used as a chip ID in saa7127_probe */
 192         { SAA7127_REG_BURST_END,                        0x1d },
 193         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
 194         { SAA7127_REG_GAINU,                            0x7d },
 195         { SAA7127_REG_GAINV,                            0xaf },
 196         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
 197         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
 198         { SAA7127_REG_VBI_BLANKING,                     0x35 },
 199         { SAA7127_REG_DAC_CONTROL,                      0x02 },
 200         { SAA7127_REG_BURST_AMP,                        0x2f },
 201         { SAA7127_REG_SUBC3,                            0xcb },
 202         { SAA7127_REG_SUBC2,                            0x8a },
 203         { SAA7127_REG_SUBC1,                            0x09 },
 204         { SAA7127_REG_SUBC0,                            0x2a },
 205         { SAA7127_REG_MULTI,                            0xa0 },
 206         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
 207         { 0, 0 }
 208 };
 209 
 210 #define SAA7127_50HZ_SECAM_DAC_CONTROL 0x08
 211 static struct i2c_reg_value saa7127_init_config_50hz_secam[] = {
 212         { SAA7127_REG_BURST_START,                      0x21 },
 213         /* BURST_END is also used as a chip ID in saa7127_probe */
 214         { SAA7127_REG_BURST_END,                        0x1d },
 215         { SAA7127_REG_CHROMA_PHASE,                     0x3f },
 216         { SAA7127_REG_GAINU,                            0x6a },
 217         { SAA7127_REG_GAINV,                            0x81 },
 218         { SAA7127_REG_BLACK_LEVEL,                      0x33 },
 219         { SAA7127_REG_BLANKING_LEVEL,                   0x35 },
 220         { SAA7127_REG_VBI_BLANKING,                     0x35 },
 221         { SAA7127_REG_DAC_CONTROL,                      0x08 },
 222         { SAA7127_REG_BURST_AMP,                        0x2f },
 223         { SAA7127_REG_SUBC3,                            0xb2 },
 224         { SAA7127_REG_SUBC2,                            0x3b },
 225         { SAA7127_REG_SUBC1,                            0xa3 },
 226         { SAA7127_REG_SUBC0,                            0x28 },
 227         { SAA7127_REG_MULTI,                            0x90 },
 228         { SAA7127_REG_CLOSED_CAPTION,                   0x00 },
 229         { 0, 0 }
 230 };
 231 
 232 /*
 233  **********************************************************************
 234  *
 235  *  Encoder Struct, holds the configuration state of the encoder
 236  *
 237  **********************************************************************
 238  */
 239 
 240 enum saa712x_model {
 241         SAA7127,
 242         SAA7129,
 243 };
 244 
 245 struct saa7127_state {
 246         struct v4l2_subdev sd;
 247         v4l2_std_id std;
 248         enum saa712x_model ident;
 249         enum saa7127_input_type input_type;
 250         enum saa7127_output_type output_type;
 251         int video_enable;
 252         int wss_enable;
 253         u16 wss_mode;
 254         int cc_enable;
 255         u16 cc_data;
 256         int xds_enable;
 257         u16 xds_data;
 258         int vps_enable;
 259         u8 vps_data[5];
 260         u8 reg_2d;
 261         u8 reg_3a;
 262         u8 reg_3a_cb;   /* colorbar bit */
 263         u8 reg_61;
 264 };
 265 
 266 static inline struct saa7127_state *to_state(struct v4l2_subdev *sd)
 267 {
 268         return container_of(sd, struct saa7127_state, sd);
 269 }
 270 
 271 static const char * const output_strs[] =
 272 {
 273         "S-Video + Composite",
 274         "Composite",
 275         "S-Video",
 276         "RGB",
 277         "YUV C",
 278         "YUV V"
 279 };
 280 
 281 static const char * const wss_strs[] = {
 282         "invalid",
 283         "letterbox 14:9 center",
 284         "letterbox 14:9 top",
 285         "invalid",
 286         "letterbox 16:9 top",
 287         "invalid",
 288         "invalid",
 289         "16:9 full format anamorphic",
 290         "4:3 full format",
 291         "invalid",
 292         "invalid",
 293         "letterbox 16:9 center",
 294         "invalid",
 295         "letterbox >16:9 center",
 296         "14:9 full format center",
 297         "invalid",
 298 };
 299 
 300 /* ----------------------------------------------------------------------- */
 301 
 302 static int saa7127_read(struct v4l2_subdev *sd, u8 reg)
 303 {
 304         struct i2c_client *client = v4l2_get_subdevdata(sd);
 305 
 306         return i2c_smbus_read_byte_data(client, reg);
 307 }
 308 
 309 /* ----------------------------------------------------------------------- */
 310 
 311 static int saa7127_write(struct v4l2_subdev *sd, u8 reg, u8 val)
 312 {
 313         struct i2c_client *client = v4l2_get_subdevdata(sd);
 314         int i;
 315 
 316         for (i = 0; i < 3; i++) {
 317                 if (i2c_smbus_write_byte_data(client, reg, val) == 0)
 318                         return 0;
 319         }
 320         v4l2_err(sd, "I2C Write Problem\n");
 321         return -1;
 322 }
 323 
 324 /* ----------------------------------------------------------------------- */
 325 
 326 static int saa7127_write_inittab(struct v4l2_subdev *sd,
 327                                  const struct i2c_reg_value *regs)
 328 {
 329         while (regs->reg != 0) {
 330                 saa7127_write(sd, regs->reg, regs->value);
 331                 regs++;
 332         }
 333         return 0;
 334 }
 335 
 336 /* ----------------------------------------------------------------------- */
 337 
 338 static int saa7127_set_vps(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 339 {
 340         struct saa7127_state *state = to_state(sd);
 341         int enable = (data->line != 0);
 342 
 343         if (enable && (data->field != 0 || data->line != 16))
 344                 return -EINVAL;
 345         if (state->vps_enable != enable) {
 346                 v4l2_dbg(1, debug, sd, "Turn VPS Signal %s\n", enable ? "on" : "off");
 347                 saa7127_write(sd, 0x54, enable << 7);
 348                 state->vps_enable = enable;
 349         }
 350         if (!enable)
 351                 return 0;
 352 
 353         state->vps_data[0] = data->data[2];
 354         state->vps_data[1] = data->data[8];
 355         state->vps_data[2] = data->data[9];
 356         state->vps_data[3] = data->data[10];
 357         state->vps_data[4] = data->data[11];
 358         v4l2_dbg(1, debug, sd, "Set VPS data %*ph\n", 5, state->vps_data);
 359         saa7127_write(sd, 0x55, state->vps_data[0]);
 360         saa7127_write(sd, 0x56, state->vps_data[1]);
 361         saa7127_write(sd, 0x57, state->vps_data[2]);
 362         saa7127_write(sd, 0x58, state->vps_data[3]);
 363         saa7127_write(sd, 0x59, state->vps_data[4]);
 364         return 0;
 365 }
 366 
 367 /* ----------------------------------------------------------------------- */
 368 
 369 static int saa7127_set_cc(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 370 {
 371         struct saa7127_state *state = to_state(sd);
 372         u16 cc = data->data[1] << 8 | data->data[0];
 373         int enable = (data->line != 0);
 374 
 375         if (enable && (data->field != 0 || data->line != 21))
 376                 return -EINVAL;
 377         if (state->cc_enable != enable) {
 378                 v4l2_dbg(1, debug, sd,
 379                         "Turn CC %s\n", enable ? "on" : "off");
 380                 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
 381                         (state->xds_enable << 7) | (enable << 6) | 0x11);
 382                 state->cc_enable = enable;
 383         }
 384         if (!enable)
 385                 return 0;
 386 
 387         v4l2_dbg(2, debug, sd, "CC data: %04x\n", cc);
 388         saa7127_write(sd, SAA7127_REG_LINE_21_ODD_0, cc & 0xff);
 389         saa7127_write(sd, SAA7127_REG_LINE_21_ODD_1, cc >> 8);
 390         state->cc_data = cc;
 391         return 0;
 392 }
 393 
 394 /* ----------------------------------------------------------------------- */
 395 
 396 static int saa7127_set_xds(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 397 {
 398         struct saa7127_state *state = to_state(sd);
 399         u16 xds = data->data[1] << 8 | data->data[0];
 400         int enable = (data->line != 0);
 401 
 402         if (enable && (data->field != 1 || data->line != 21))
 403                 return -EINVAL;
 404         if (state->xds_enable != enable) {
 405                 v4l2_dbg(1, debug, sd, "Turn XDS %s\n", enable ? "on" : "off");
 406                 saa7127_write(sd, SAA7127_REG_CLOSED_CAPTION,
 407                                 (enable << 7) | (state->cc_enable << 6) | 0x11);
 408                 state->xds_enable = enable;
 409         }
 410         if (!enable)
 411                 return 0;
 412 
 413         v4l2_dbg(2, debug, sd, "XDS data: %04x\n", xds);
 414         saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_0, xds & 0xff);
 415         saa7127_write(sd, SAA7127_REG_LINE_21_EVEN_1, xds >> 8);
 416         state->xds_data = xds;
 417         return 0;
 418 }
 419 
 420 /* ----------------------------------------------------------------------- */
 421 
 422 static int saa7127_set_wss(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 423 {
 424         struct saa7127_state *state = to_state(sd);
 425         int enable = (data->line != 0);
 426 
 427         if (enable && (data->field != 0 || data->line != 23))
 428                 return -EINVAL;
 429         if (state->wss_enable != enable) {
 430                 v4l2_dbg(1, debug, sd, "Turn WSS %s\n", enable ? "on" : "off");
 431                 saa7127_write(sd, 0x27, enable << 7);
 432                 state->wss_enable = enable;
 433         }
 434         if (!enable)
 435                 return 0;
 436 
 437         saa7127_write(sd, 0x26, data->data[0]);
 438         saa7127_write(sd, 0x27, 0x80 | (data->data[1] & 0x3f));
 439         v4l2_dbg(1, debug, sd,
 440                 "WSS mode: %s\n", wss_strs[data->data[0] & 0xf]);
 441         state->wss_mode = (data->data[1] & 0x3f) << 8 | data->data[0];
 442         return 0;
 443 }
 444 
 445 /* ----------------------------------------------------------------------- */
 446 
 447 static int saa7127_set_video_enable(struct v4l2_subdev *sd, int enable)
 448 {
 449         struct saa7127_state *state = to_state(sd);
 450 
 451         if (enable) {
 452                 v4l2_dbg(1, debug, sd, "Enable Video Output\n");
 453                 saa7127_write(sd, 0x2d, state->reg_2d);
 454                 saa7127_write(sd, 0x61, state->reg_61);
 455         } else {
 456                 v4l2_dbg(1, debug, sd, "Disable Video Output\n");
 457                 saa7127_write(sd, 0x2d, (state->reg_2d & 0xf0));
 458                 saa7127_write(sd, 0x61, (state->reg_61 | 0xc0));
 459         }
 460         state->video_enable = enable;
 461         return 0;
 462 }
 463 
 464 /* ----------------------------------------------------------------------- */
 465 
 466 static int saa7127_set_std(struct v4l2_subdev *sd, v4l2_std_id std)
 467 {
 468         struct saa7127_state *state = to_state(sd);
 469         const struct i2c_reg_value *inittab;
 470 
 471         if (std & V4L2_STD_525_60) {
 472                 v4l2_dbg(1, debug, sd, "Selecting 60 Hz video Standard\n");
 473                 inittab = saa7127_init_config_60hz;
 474                 state->reg_61 = SAA7127_60HZ_DAC_CONTROL;
 475 
 476         } else if (state->ident == SAA7129 &&
 477                    (std & V4L2_STD_SECAM) &&
 478                    !(std & (V4L2_STD_625_50 & ~V4L2_STD_SECAM))) {
 479 
 480                 /* If and only if SECAM, with a SAA712[89] */
 481                 v4l2_dbg(1, debug, sd,
 482                          "Selecting 50 Hz SECAM video Standard\n");
 483                 inittab = saa7127_init_config_50hz_secam;
 484                 state->reg_61 = SAA7127_50HZ_SECAM_DAC_CONTROL;
 485 
 486         } else {
 487                 v4l2_dbg(1, debug, sd, "Selecting 50 Hz PAL video Standard\n");
 488                 inittab = saa7127_init_config_50hz_pal;
 489                 state->reg_61 = SAA7127_50HZ_PAL_DAC_CONTROL;
 490         }
 491 
 492         /* Write Table */
 493         saa7127_write_inittab(sd, inittab);
 494         state->std = std;
 495         return 0;
 496 }
 497 
 498 /* ----------------------------------------------------------------------- */
 499 
 500 static int saa7127_set_output_type(struct v4l2_subdev *sd, int output)
 501 {
 502         struct saa7127_state *state = to_state(sd);
 503 
 504         switch (output) {
 505         case SAA7127_OUTPUT_TYPE_RGB:
 506                 state->reg_2d = 0x0f;   /* RGB + CVBS (for sync) */
 507                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 508                 break;
 509 
 510         case SAA7127_OUTPUT_TYPE_COMPOSITE:
 511                 if (state->ident == SAA7129)
 512                         state->reg_2d = 0x20;   /* CVBS only */
 513                 else
 514                         state->reg_2d = 0x08;   /* 00001000 CVBS only, RGB DAC's off (high impedance mode) */
 515                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 516                 break;
 517 
 518         case SAA7127_OUTPUT_TYPE_SVIDEO:
 519                 if (state->ident == SAA7129)
 520                         state->reg_2d = 0x18;   /* Y + C */
 521                 else
 522                         state->reg_2d = 0xff;   /*11111111  croma -> R, luma -> CVBS + G + B */
 523                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 524                 break;
 525 
 526         case SAA7127_OUTPUT_TYPE_YUV_V:
 527                 state->reg_2d = 0x4f;   /* reg 2D = 01001111, all DAC's on, RGB + VBS */
 528                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 529                 break;
 530 
 531         case SAA7127_OUTPUT_TYPE_YUV_C:
 532                 state->reg_2d = 0x0f;   /* reg 2D = 00001111, all DAC's on, RGB + CVBS */
 533                 state->reg_3a = 0x0b;   /* reg 3A = 00001011, bypass RGB-matrix */
 534                 break;
 535 
 536         case SAA7127_OUTPUT_TYPE_BOTH:
 537                 if (state->ident == SAA7129)
 538                         state->reg_2d = 0x38;
 539                 else
 540                         state->reg_2d = 0xbf;
 541                 state->reg_3a = 0x13;   /* by default switch YUV to RGB-matrix on */
 542                 break;
 543 
 544         default:
 545                 return -EINVAL;
 546         }
 547         v4l2_dbg(1, debug, sd,
 548                 "Selecting %s output type\n", output_strs[output]);
 549 
 550         /* Configure Encoder */
 551         saa7127_write(sd, 0x2d, state->reg_2d);
 552         saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
 553         state->output_type = output;
 554         return 0;
 555 }
 556 
 557 /* ----------------------------------------------------------------------- */
 558 
 559 static int saa7127_set_input_type(struct v4l2_subdev *sd, int input)
 560 {
 561         struct saa7127_state *state = to_state(sd);
 562 
 563         switch (input) {
 564         case SAA7127_INPUT_TYPE_NORMAL: /* avia */
 565                 v4l2_dbg(1, debug, sd, "Selecting Normal Encoder Input\n");
 566                 state->reg_3a_cb = 0;
 567                 break;
 568 
 569         case SAA7127_INPUT_TYPE_TEST_IMAGE:     /* color bar */
 570                 v4l2_dbg(1, debug, sd, "Selecting Color Bar generator\n");
 571                 state->reg_3a_cb = 0x80;
 572                 break;
 573 
 574         default:
 575                 return -EINVAL;
 576         }
 577         saa7127_write(sd, 0x3a, state->reg_3a | state->reg_3a_cb);
 578         state->input_type = input;
 579         return 0;
 580 }
 581 
 582 /* ----------------------------------------------------------------------- */
 583 
 584 static int saa7127_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
 585 {
 586         struct saa7127_state *state = to_state(sd);
 587 
 588         if (state->std == std)
 589                 return 0;
 590         return saa7127_set_std(sd, std);
 591 }
 592 
 593 static int saa7127_s_routing(struct v4l2_subdev *sd,
 594                              u32 input, u32 output, u32 config)
 595 {
 596         struct saa7127_state *state = to_state(sd);
 597         int rc = 0;
 598 
 599         if (state->input_type != input)
 600                 rc = saa7127_set_input_type(sd, input);
 601         if (rc == 0 && state->output_type != output)
 602                 rc = saa7127_set_output_type(sd, output);
 603         return rc;
 604 }
 605 
 606 static int saa7127_s_stream(struct v4l2_subdev *sd, int enable)
 607 {
 608         struct saa7127_state *state = to_state(sd);
 609 
 610         if (state->video_enable == enable)
 611                 return 0;
 612         return saa7127_set_video_enable(sd, enable);
 613 }
 614 
 615 static int saa7127_g_sliced_fmt(struct v4l2_subdev *sd, struct v4l2_sliced_vbi_format *fmt)
 616 {
 617         struct saa7127_state *state = to_state(sd);
 618 
 619         memset(fmt->service_lines, 0, sizeof(fmt->service_lines));
 620         if (state->vps_enable)
 621                 fmt->service_lines[0][16] = V4L2_SLICED_VPS;
 622         if (state->wss_enable)
 623                 fmt->service_lines[0][23] = V4L2_SLICED_WSS_625;
 624         if (state->cc_enable) {
 625                 fmt->service_lines[0][21] = V4L2_SLICED_CAPTION_525;
 626                 fmt->service_lines[1][21] = V4L2_SLICED_CAPTION_525;
 627         }
 628         fmt->service_set =
 629                 (state->vps_enable ? V4L2_SLICED_VPS : 0) |
 630                 (state->wss_enable ? V4L2_SLICED_WSS_625 : 0) |
 631                 (state->cc_enable ? V4L2_SLICED_CAPTION_525 : 0);
 632         return 0;
 633 }
 634 
 635 static int saa7127_s_vbi_data(struct v4l2_subdev *sd, const struct v4l2_sliced_vbi_data *data)
 636 {
 637         switch (data->id) {
 638         case V4L2_SLICED_WSS_625:
 639                 return saa7127_set_wss(sd, data);
 640         case V4L2_SLICED_VPS:
 641                 return saa7127_set_vps(sd, data);
 642         case V4L2_SLICED_CAPTION_525:
 643                 if (data->field == 0)
 644                         return saa7127_set_cc(sd, data);
 645                 return saa7127_set_xds(sd, data);
 646         default:
 647                 return -EINVAL;
 648         }
 649         return 0;
 650 }
 651 
 652 #ifdef CONFIG_VIDEO_ADV_DEBUG
 653 static int saa7127_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 654 {
 655         reg->val = saa7127_read(sd, reg->reg & 0xff);
 656         reg->size = 1;
 657         return 0;
 658 }
 659 
 660 static int saa7127_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
 661 {
 662         saa7127_write(sd, reg->reg & 0xff, reg->val & 0xff);
 663         return 0;
 664 }
 665 #endif
 666 
 667 static int saa7127_log_status(struct v4l2_subdev *sd)
 668 {
 669         struct saa7127_state *state = to_state(sd);
 670 
 671         v4l2_info(sd, "Standard: %s\n", (state->std & V4L2_STD_525_60) ? "60 Hz" : "50 Hz");
 672         v4l2_info(sd, "Input:    %s\n", state->input_type ?  "color bars" : "normal");
 673         v4l2_info(sd, "Output:   %s\n", state->video_enable ?
 674                         output_strs[state->output_type] : "disabled");
 675         v4l2_info(sd, "WSS:      %s\n", state->wss_enable ?
 676                         wss_strs[state->wss_mode] : "disabled");
 677         v4l2_info(sd, "VPS:      %s\n", state->vps_enable ? "enabled" : "disabled");
 678         v4l2_info(sd, "CC:       %s\n", state->cc_enable ? "enabled" : "disabled");
 679         return 0;
 680 }
 681 
 682 /* ----------------------------------------------------------------------- */
 683 
 684 static const struct v4l2_subdev_core_ops saa7127_core_ops = {
 685         .log_status = saa7127_log_status,
 686 #ifdef CONFIG_VIDEO_ADV_DEBUG
 687         .g_register = saa7127_g_register,
 688         .s_register = saa7127_s_register,
 689 #endif
 690 };
 691 
 692 static const struct v4l2_subdev_video_ops saa7127_video_ops = {
 693         .s_std_output = saa7127_s_std_output,
 694         .s_routing = saa7127_s_routing,
 695         .s_stream = saa7127_s_stream,
 696 };
 697 
 698 static const struct v4l2_subdev_vbi_ops saa7127_vbi_ops = {
 699         .s_vbi_data = saa7127_s_vbi_data,
 700         .g_sliced_fmt = saa7127_g_sliced_fmt,
 701 };
 702 
 703 static const struct v4l2_subdev_ops saa7127_ops = {
 704         .core = &saa7127_core_ops,
 705         .video = &saa7127_video_ops,
 706         .vbi = &saa7127_vbi_ops,
 707 };
 708 
 709 /* ----------------------------------------------------------------------- */
 710 
 711 static int saa7127_probe(struct i2c_client *client,
 712                          const struct i2c_device_id *id)
 713 {
 714         struct saa7127_state *state;
 715         struct v4l2_subdev *sd;
 716         struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 };  /* set to disabled */
 717 
 718         /* Check if the adapter supports the needed features */
 719         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 720                 return -EIO;
 721 
 722         v4l_dbg(1, debug, client, "detecting saa7127 client on address 0x%x\n",
 723                         client->addr << 1);
 724 
 725         state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
 726         if (state == NULL)
 727                 return -ENOMEM;
 728 
 729         sd = &state->sd;
 730         v4l2_i2c_subdev_init(sd, client, &saa7127_ops);
 731 
 732         /* First test register 0: Bits 5-7 are a version ID (should be 0),
 733            and bit 2 should also be 0.
 734            This is rather general, so the second test is more specific and
 735            looks at the 'ending point of burst in clock cycles' which is
 736            0x1d after a reset and not expected to ever change. */
 737         if ((saa7127_read(sd, 0) & 0xe4) != 0 ||
 738                         (saa7127_read(sd, 0x29) & 0x3f) != 0x1d) {
 739                 v4l2_dbg(1, debug, sd, "saa7127 not found\n");
 740                 return -ENODEV;
 741         }
 742 
 743         if (id->driver_data) {  /* Chip type is already known */
 744                 state->ident = id->driver_data;
 745         } else {                /* Needs detection */
 746                 int read_result;
 747 
 748                 /* Detect if it's an saa7129 */
 749                 read_result = saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2);
 750                 saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2, 0xaa);
 751                 if (saa7127_read(sd, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
 752                         saa7127_write(sd, SAA7129_REG_FADE_KEY_COL2,
 753                                         read_result);
 754                         state->ident = SAA7129;
 755                         strscpy(client->name, "saa7129", I2C_NAME_SIZE);
 756                 } else {
 757                         state->ident = SAA7127;
 758                         strscpy(client->name, "saa7127", I2C_NAME_SIZE);
 759                 }
 760         }
 761 
 762         v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
 763                         client->addr << 1, client->adapter->name);
 764 
 765         v4l2_dbg(1, debug, sd, "Configuring encoder\n");
 766         saa7127_write_inittab(sd, saa7127_init_config_common);
 767         saa7127_set_std(sd, V4L2_STD_NTSC);
 768         saa7127_set_output_type(sd, SAA7127_OUTPUT_TYPE_BOTH);
 769         saa7127_set_vps(sd, &vbi);
 770         saa7127_set_wss(sd, &vbi);
 771         saa7127_set_cc(sd, &vbi);
 772         saa7127_set_xds(sd, &vbi);
 773         if (test_image == 1)
 774                 /* The Encoder has an internal Colorbar generator */
 775                 /* This can be used for debugging */
 776                 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_TEST_IMAGE);
 777         else
 778                 saa7127_set_input_type(sd, SAA7127_INPUT_TYPE_NORMAL);
 779         saa7127_set_video_enable(sd, 1);
 780 
 781         if (state->ident == SAA7129)
 782                 saa7127_write_inittab(sd, saa7129_init_config_extra);
 783         return 0;
 784 }
 785 
 786 /* ----------------------------------------------------------------------- */
 787 
 788 static int saa7127_remove(struct i2c_client *client)
 789 {
 790         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 791 
 792         v4l2_device_unregister_subdev(sd);
 793         /* Turn off TV output */
 794         saa7127_set_video_enable(sd, 0);
 795         return 0;
 796 }
 797 
 798 /* ----------------------------------------------------------------------- */
 799 
 800 static const struct i2c_device_id saa7127_id[] = {
 801         { "saa7127_auto", 0 },  /* auto-detection */
 802         { "saa7126", SAA7127 },
 803         { "saa7127", SAA7127 },
 804         { "saa7128", SAA7129 },
 805         { "saa7129", SAA7129 },
 806         { }
 807 };
 808 MODULE_DEVICE_TABLE(i2c, saa7127_id);
 809 
 810 static struct i2c_driver saa7127_driver = {
 811         .driver = {
 812                 .name   = "saa7127",
 813         },
 814         .probe          = saa7127_probe,
 815         .remove         = saa7127_remove,
 816         .id_table       = saa7127_id,
 817 };
 818 
 819 module_i2c_driver(saa7127_driver);
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root/drivers/media/i2c/saa7127.c

DEFINITIONS
