1 /* 2 * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 3 * 4 * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> 5 * 6 * Based on adv7176 driver by: 7 * 8 * Copyright (C) 1998 Dave Perks <dperks@ibm.net> 9 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> 10 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> 11 * - some corrections for Pinnacle Systems Inc. DC10plus card. 12 * 13 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> 14 * - moved over to linux>=2.4.x i2c protocol (1/1/2003) 15 * 16 * This program is free software; you can redistribute it and/or modify 17 * it under the terms of the GNU General Public License as published by 18 * the Free Software Foundation; either version 2 of the License, or 19 * (at your option) any later version. 20 * 21 * This program is distributed in the hope that it will be useful, 22 * but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * GNU General Public License for more details. 25 * 26 * You should have received a copy of the GNU General Public License 27 * along with this program; if not, write to the Free Software 28 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 29 */ 30 31 #include <linux/module.h> 32 #include <linux/types.h> 33 #include <linux/slab.h> 34 #include <linux/ioctl.h> 35 #include <asm/uaccess.h> 36 #include <linux/i2c.h> 37 #include <linux/videodev2.h> 38 #include <media/v4l2-device.h> 39 #include <media/v4l2-chip-ident.h> 40 41 MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); 42 MODULE_AUTHOR("Maxim Yevtyushkin"); 43 MODULE_LICENSE("GPL"); 44 45 46 static int debug; 47 module_param(debug, int, 0); 48 MODULE_PARM_DESC(debug, "Debug level (0-1)"); 49 50 /* ----------------------------------------------------------------------- */ 51 52 struct adv7170 { 53 struct v4l2_subdev sd; 54 unsigned char reg[128]; 55 56 v4l2_std_id norm; 57 int input; 58 }; 59 60 static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd) 61 { 62 return container_of(sd, struct adv7170, sd); 63 } 64 65 static char *inputs[] = { "pass_through", "play_back" }; 66 67 static enum v4l2_mbus_pixelcode adv7170_codes[] = { 68 V4L2_MBUS_FMT_UYVY8_2X8, 69 V4L2_MBUS_FMT_UYVY8_1X16, 70 }; 71 72 /* ----------------------------------------------------------------------- */ 73 74 static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value) 75 { 76 struct i2c_client *client = v4l2_get_subdevdata(sd); 77 struct adv7170 *encoder = to_adv7170(sd); 78 79 encoder->reg[reg] = value; 80 return i2c_smbus_write_byte_data(client, reg, value); 81 } 82 83 static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg) 84 { 85 struct i2c_client *client = v4l2_get_subdevdata(sd); 86 87 return i2c_smbus_read_byte_data(client, reg); 88 } 89 90 static int adv7170_write_block(struct v4l2_subdev *sd, 91 const u8 *data, unsigned int len) 92 { 93 struct i2c_client *client = v4l2_get_subdevdata(sd); 94 struct adv7170 *encoder = to_adv7170(sd); 95 int ret = -1; 96 u8 reg; 97 98 /* the adv7170 has an autoincrement function, use it if 99 * the adapter understands raw I2C */ 100 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 101 /* do raw I2C, not smbus compatible */ 102 u8 block_data[32]; 103 int block_len; 104 105 while (len >= 2) { 106 block_len = 0; 107 block_data[block_len++] = reg = data[0]; 108 do { 109 block_data[block_len++] = 110 encoder->reg[reg++] = data[1]; 111 len -= 2; 112 data += 2; 113 } while (len >= 2 && data[0] == reg && block_len < 32); 114 ret = i2c_master_send(client, block_data, block_len); 115 if (ret < 0) 116 break; 117 } 118 } else { 119 /* do some slow I2C emulation kind of thing */ 120 while (len >= 2) { 121 reg = *data++; 122 ret = adv7170_write(sd, reg, *data++); 123 if (ret < 0) 124 break; 125 len -= 2; 126 } 127 } 128 return ret; 129 } 130 131 /* ----------------------------------------------------------------------- */ 132 133 #define TR0MODE 0x4c 134 #define TR0RST 0x80 135 136 #define TR1CAPT 0x00 137 #define TR1PLAY 0x00 138 139 static const unsigned char init_NTSC[] = { 140 0x00, 0x10, /* MR0 */ 141 0x01, 0x20, /* MR1 */ 142 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ 143 0x03, 0x80, /* MR3 */ 144 0x04, 0x30, /* MR4 */ 145 0x05, 0x00, /* Reserved */ 146 0x06, 0x00, /* Reserved */ 147 0x07, TR0MODE, /* TM0 */ 148 0x08, TR1CAPT, /* TM1 */ 149 0x09, 0x16, /* Fsc0 */ 150 0x0a, 0x7c, /* Fsc1 */ 151 0x0b, 0xf0, /* Fsc2 */ 152 0x0c, 0x21, /* Fsc3 */ 153 0x0d, 0x00, /* Subcarrier Phase */ 154 0x0e, 0x00, /* Closed Capt. Ext 0 */ 155 0x0f, 0x00, /* Closed Capt. Ext 1 */ 156 0x10, 0x00, /* Closed Capt. 0 */ 157 0x11, 0x00, /* Closed Capt. 1 */ 158 0x12, 0x00, /* Pedestal Ctl 0 */ 159 0x13, 0x00, /* Pedestal Ctl 1 */ 160 0x14, 0x00, /* Pedestal Ctl 2 */ 161 0x15, 0x00, /* Pedestal Ctl 3 */ 162 0x16, 0x00, /* CGMS_WSS_0 */ 163 0x17, 0x00, /* CGMS_WSS_1 */ 164 0x18, 0x00, /* CGMS_WSS_2 */ 165 0x19, 0x00, /* Teletext Ctl */ 166 }; 167 168 static const unsigned char init_PAL[] = { 169 0x00, 0x71, /* MR0 */ 170 0x01, 0x20, /* MR1 */ 171 0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */ 172 0x03, 0x80, /* MR3 */ 173 0x04, 0x30, /* MR4 */ 174 0x05, 0x00, /* Reserved */ 175 0x06, 0x00, /* Reserved */ 176 0x07, TR0MODE, /* TM0 */ 177 0x08, TR1CAPT, /* TM1 */ 178 0x09, 0xcb, /* Fsc0 */ 179 0x0a, 0x8a, /* Fsc1 */ 180 0x0b, 0x09, /* Fsc2 */ 181 0x0c, 0x2a, /* Fsc3 */ 182 0x0d, 0x00, /* Subcarrier Phase */ 183 0x0e, 0x00, /* Closed Capt. Ext 0 */ 184 0x0f, 0x00, /* Closed Capt. Ext 1 */ 185 0x10, 0x00, /* Closed Capt. 0 */ 186 0x11, 0x00, /* Closed Capt. 1 */ 187 0x12, 0x00, /* Pedestal Ctl 0 */ 188 0x13, 0x00, /* Pedestal Ctl 1 */ 189 0x14, 0x00, /* Pedestal Ctl 2 */ 190 0x15, 0x00, /* Pedestal Ctl 3 */ 191 0x16, 0x00, /* CGMS_WSS_0 */ 192 0x17, 0x00, /* CGMS_WSS_1 */ 193 0x18, 0x00, /* CGMS_WSS_2 */ 194 0x19, 0x00, /* Teletext Ctl */ 195 }; 196 197 198 static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) 199 { 200 struct adv7170 *encoder = to_adv7170(sd); 201 202 v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std); 203 204 if (std & V4L2_STD_NTSC) { 205 adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); 206 if (encoder->input == 0) 207 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ 208 adv7170_write(sd, 0x07, TR0MODE | TR0RST); 209 adv7170_write(sd, 0x07, TR0MODE); 210 } else if (std & V4L2_STD_PAL) { 211 adv7170_write_block(sd, init_PAL, sizeof(init_PAL)); 212 if (encoder->input == 0) 213 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ 214 adv7170_write(sd, 0x07, TR0MODE | TR0RST); 215 adv7170_write(sd, 0x07, TR0MODE); 216 } else { 217 v4l2_dbg(1, debug, sd, "illegal norm: %llx\n", 218 (unsigned long long)std); 219 return -EINVAL; 220 } 221 v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std); 222 encoder->norm = std; 223 return 0; 224 } 225 226 static int adv7170_s_routing(struct v4l2_subdev *sd, 227 u32 input, u32 output, u32 config) 228 { 229 struct adv7170 *encoder = to_adv7170(sd); 230 231 /* RJ: input = 0: input is from decoder 232 input = 1: input is from ZR36060 233 input = 2: color bar */ 234 235 v4l2_dbg(1, debug, sd, "set input from %s\n", 236 input == 0 ? "decoder" : "ZR36060"); 237 238 switch (input) { 239 case 0: 240 adv7170_write(sd, 0x01, 0x20); 241 adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */ 242 adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */ 243 adv7170_write(sd, 0x07, TR0MODE | TR0RST); 244 adv7170_write(sd, 0x07, TR0MODE); 245 /* udelay(10); */ 246 break; 247 248 case 1: 249 adv7170_write(sd, 0x01, 0x00); 250 adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */ 251 adv7170_write(sd, 0x02, 0x08); 252 adv7170_write(sd, 0x07, TR0MODE | TR0RST); 253 adv7170_write(sd, 0x07, TR0MODE); 254 /* udelay(10); */ 255 break; 256 257 default: 258 v4l2_dbg(1, debug, sd, "illegal input: %d\n", input); 259 return -EINVAL; 260 } 261 v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]); 262 encoder->input = input; 263 return 0; 264 } 265 266 static int adv7170_enum_fmt(struct v4l2_subdev *sd, unsigned int index, 267 enum v4l2_mbus_pixelcode *code) 268 { 269 if (index >= ARRAY_SIZE(adv7170_codes)) 270 return -EINVAL; 271 272 *code = adv7170_codes[index]; 273 return 0; 274 } 275 276 static int adv7170_g_fmt(struct v4l2_subdev *sd, 277 struct v4l2_mbus_framefmt *mf) 278 { 279 u8 val = adv7170_read(sd, 0x7); 280 281 if ((val & 0x40) == (1 << 6)) 282 mf->code = V4L2_MBUS_FMT_UYVY8_1X16; 283 else 284 mf->code = V4L2_MBUS_FMT_UYVY8_2X8; 285 286 mf->colorspace = V4L2_COLORSPACE_SMPTE170M; 287 mf->width = 0; 288 mf->height = 0; 289 mf->field = V4L2_FIELD_ANY; 290 291 return 0; 292 } 293 294 static int adv7170_s_fmt(struct v4l2_subdev *sd, 295 struct v4l2_mbus_framefmt *mf) 296 { 297 u8 val = adv7170_read(sd, 0x7); 298 int ret; 299 300 switch (mf->code) { 301 case V4L2_MBUS_FMT_UYVY8_2X8: 302 val &= ~0x40; 303 break; 304 305 case V4L2_MBUS_FMT_UYVY8_1X16: 306 val |= 0x40; 307 break; 308 309 default: 310 v4l2_dbg(1, debug, sd, 311 "illegal v4l2_mbus_framefmt code: %d\n", mf->code); 312 return -EINVAL; 313 } 314 315 ret = adv7170_write(sd, 0x7, val); 316 317 return ret; 318 } 319 320 static int adv7170_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip) 321 { 322 struct i2c_client *client = v4l2_get_subdevdata(sd); 323 324 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7170, 0); 325 } 326 327 /* ----------------------------------------------------------------------- */ 328 329 static const struct v4l2_subdev_core_ops adv7170_core_ops = { 330 .g_chip_ident = adv7170_g_chip_ident, 331 }; 332 333 static const struct v4l2_subdev_video_ops adv7170_video_ops = { 334 .s_std_output = adv7170_s_std_output, 335 .s_routing = adv7170_s_routing, 336 .s_mbus_fmt = adv7170_s_fmt, 337 .g_mbus_fmt = adv7170_g_fmt, 338 .enum_mbus_fmt = adv7170_enum_fmt, 339 }; 340 341 static const struct v4l2_subdev_ops adv7170_ops = { 342 .core = &adv7170_core_ops, 343 .video = &adv7170_video_ops, 344 }; 345 346 /* ----------------------------------------------------------------------- */ 347 348 static int adv7170_probe(struct i2c_client *client, 349 const struct i2c_device_id *id) 350 { 351 struct adv7170 *encoder; 352 struct v4l2_subdev *sd; 353 int i; 354 355 /* Check if the adapter supports the needed features */ 356 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 357 return -ENODEV; 358 359 v4l_info(client, "chip found @ 0x%x (%s)\n", 360 client->addr << 1, client->adapter->name); 361 362 encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL); 363 if (encoder == NULL) 364 return -ENOMEM; 365 sd = &encoder->sd; 366 v4l2_i2c_subdev_init(sd, client, &adv7170_ops); 367 encoder->norm = V4L2_STD_NTSC; 368 encoder->input = 0; 369 370 i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC)); 371 if (i >= 0) { 372 i = adv7170_write(sd, 0x07, TR0MODE | TR0RST); 373 i = adv7170_write(sd, 0x07, TR0MODE); 374 i = adv7170_read(sd, 0x12); 375 v4l2_dbg(1, debug, sd, "revision %d\n", i & 1); 376 } 377 if (i < 0) 378 v4l2_dbg(1, debug, sd, "init error 0x%x\n", i); 379 return 0; 380 } 381 382 static int adv7170_remove(struct i2c_client *client) 383 { 384 struct v4l2_subdev *sd = i2c_get_clientdata(client); 385 386 v4l2_device_unregister_subdev(sd); 387 kfree(to_adv7170(sd)); 388 return 0; 389 } 390 391 /* ----------------------------------------------------------------------- */ 392 393 static const struct i2c_device_id adv7170_id[] = { 394 { "adv7170", 0 }, 395 { "adv7171", 0 }, 396 { } 397 }; 398 MODULE_DEVICE_TABLE(i2c, adv7170_id); 399 400 static struct i2c_driver adv7170_driver = { 401 .driver = { 402 .owner = THIS_MODULE, 403 .name = "adv7170", 404 }, 405 .probe = adv7170_probe, 406 .remove = adv7170_remove, 407 .id_table = adv7170_id, 408 }; 409 410 module_i2c_driver(adv7170_driver); 411