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 { 713 const struct i2c_device_id *id = i2c_client_get_device_id(client); 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 void 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 } 796 797 /* ----------------------------------------------------------------------- */ 798 799 static const struct i2c_device_id saa7127_id[] = { 800 { "saa7127_auto", 0 }, /* auto-detection */ 801 { "saa7126", SAA7127 }, 802 { "saa7127", SAA7127 }, 803 { "saa7128", SAA7129 }, 804 { "saa7129", SAA7129 }, 805 { } 806 }; 807 MODULE_DEVICE_TABLE(i2c, saa7127_id); 808 809 static struct i2c_driver saa7127_driver = { 810 .driver = { 811 .name = "saa7127", 812 }, 813 .probe = saa7127_probe, 814 .remove = saa7127_remove, 815 .id_table = saa7127_id, 816 }; 817 818 module_i2c_driver(saa7127_driver); 819