Hans Verkuil | c7c54a9 | 2013-03-22 11:13:58 -0300 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2005-2006 Micronas USA Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License (Version 2) as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software Foundation, |
| 15 | * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/i2c.h> |
| 21 | #include <linux/videodev2.h> |
| 22 | #include <media/tuner.h> |
| 23 | #include <media/v4l2-common.h> |
| 24 | #include <media/v4l2-ioctl.h> |
| 25 | #include <media/v4l2-device.h> |
| 26 | #include <linux/slab.h> |
| 27 | |
| 28 | MODULE_DESCRIPTION("sony-btf-mpx driver"); |
| 29 | MODULE_LICENSE("GPL v2"); |
| 30 | |
| 31 | static int debug; |
| 32 | module_param(debug, int, 0644); |
| 33 | MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on\n"); |
| 34 | |
| 35 | /* #define MPX_DEBUG */ |
| 36 | |
| 37 | /* |
| 38 | * Note: |
| 39 | * |
| 40 | * AS(IF/MPX) pin: LOW HIGH/OPEN |
| 41 | * IF/MPX address: 0x42/0x40 0x43/0x44 |
| 42 | */ |
| 43 | |
| 44 | |
| 45 | static int force_mpx_mode = -1; |
| 46 | module_param(force_mpx_mode, int, 0644); |
| 47 | |
| 48 | struct sony_btf_mpx { |
| 49 | struct v4l2_subdev sd; |
| 50 | int mpxmode; |
| 51 | u32 audmode; |
| 52 | }; |
| 53 | |
| 54 | static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd) |
| 55 | { |
| 56 | return container_of(sd, struct sony_btf_mpx, sd); |
| 57 | } |
| 58 | |
| 59 | static int mpx_write(struct i2c_client *client, int dev, int addr, int val) |
| 60 | { |
| 61 | u8 buffer[5]; |
| 62 | struct i2c_msg msg; |
| 63 | |
| 64 | buffer[0] = dev; |
| 65 | buffer[1] = addr >> 8; |
| 66 | buffer[2] = addr & 0xff; |
| 67 | buffer[3] = val >> 8; |
| 68 | buffer[4] = val & 0xff; |
| 69 | msg.addr = client->addr; |
| 70 | msg.flags = 0; |
| 71 | msg.len = 5; |
| 72 | msg.buf = buffer; |
| 73 | i2c_transfer(client->adapter, &msg, 1); |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | * MPX register values for the BTF-PG472Z: |
| 79 | * |
| 80 | * FM_ NICAM_ SCART_ |
| 81 | * MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME |
| 82 | * 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000 |
| 83 | * --------------------------------------------------------------- |
| 84 | * Auto 1003 0020 0100 2603 5000 XXXX 0001 7500 |
| 85 | * |
| 86 | * B/G |
| 87 | * Mono 1003 0020 0100 2603 5000 XXXX 0003 7500 |
| 88 | * A2 1003 0020 0100 2601 5000 XXXX 0003 7500 |
| 89 | * NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500 |
| 90 | * |
| 91 | * I |
| 92 | * Mono 1003 0020 0100 2603 7900 XXXX 000A 7500 |
| 93 | * NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500 |
| 94 | * |
| 95 | * D/K |
| 96 | * Mono 1003 0020 0100 2603 5000 XXXX 0004 7500 |
| 97 | * A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500 |
| 98 | * A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500 |
| 99 | * A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500 |
| 100 | * NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500 |
| 101 | * |
| 102 | * L/L' |
| 103 | * Mono 0003 0200 0100 7C03 5000 2200 0009 7500 |
| 104 | * NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500 |
| 105 | * |
| 106 | * M |
| 107 | * Mono 1003 0200 0100 2B03 5000 2B00 0002 7500 |
| 108 | * |
| 109 | * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX. |
| 110 | * |
| 111 | * Bilingual selection in A2/NICAM: |
| 112 | * |
| 113 | * High byte of SOURCE Left chan Right chan |
| 114 | * 0x01 MAIN SUB |
| 115 | * 0x03 MAIN MAIN |
| 116 | * 0x04 SUB SUB |
| 117 | * |
| 118 | * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or |
| 119 | * 0x00 (all other bands). Force mono in A2 with FMONO_A2: |
| 120 | * |
| 121 | * FMONO_A2 |
| 122 | * 10/0022 |
| 123 | * -------- |
| 124 | * Forced mono ON 07F0 |
| 125 | * Forced mono OFF 0190 |
| 126 | */ |
| 127 | |
| 128 | static const struct { |
| 129 | enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode; |
| 130 | u16 modus; |
| 131 | u16 source; |
| 132 | u16 acb; |
| 133 | u16 fm_prescale; |
| 134 | u16 nicam_prescale; |
| 135 | u16 scart_prescale; |
| 136 | u16 system; |
| 137 | u16 volume; |
| 138 | } mpx_audio_modes[] = { |
| 139 | /* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, |
| 140 | 0x5000, 0x0000, 0x0001, 0x7500 }, |
| 141 | /* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, |
| 142 | 0x5000, 0x0000, 0x0003, 0x7500 }, |
| 143 | /* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, |
| 144 | 0x5000, 0x0000, 0x0003, 0x7500 }, |
| 145 | /* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, |
| 146 | 0x5000, 0x0000, 0x0008, 0x7500 }, |
| 147 | /* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, |
| 148 | 0x7900, 0x0000, 0x000A, 0x7500 }, |
| 149 | /* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, |
| 150 | 0x7900, 0x0000, 0x000A, 0x7500 }, |
| 151 | /* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603, |
| 152 | 0x5000, 0x0000, 0x0004, 0x7500 }, |
| 153 | /* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, |
| 154 | 0x5000, 0x0000, 0x0004, 0x7500 }, |
| 155 | /* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, |
| 156 | 0x5000, 0x0000, 0x0005, 0x7500 }, |
| 157 | /* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601, |
| 158 | 0x5000, 0x0000, 0x0007, 0x7500 }, |
| 159 | /* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603, |
| 160 | 0x5000, 0x0000, 0x000B, 0x7500 }, |
| 161 | /* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03, |
| 162 | 0x5000, 0x2200, 0x0009, 0x7500 }, |
| 163 | /* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03, |
| 164 | 0x5000, 0x0000, 0x0009, 0x7500 }, |
| 165 | }; |
| 166 | |
| 167 | #define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes) |
| 168 | |
| 169 | static int mpx_setup(struct sony_btf_mpx *t) |
| 170 | { |
| 171 | struct i2c_client *client = v4l2_get_subdevdata(&t->sd); |
| 172 | u16 source = 0; |
| 173 | u8 buffer[3]; |
| 174 | struct i2c_msg msg; |
| 175 | int mode = t->mpxmode; |
| 176 | |
| 177 | /* reset MPX */ |
| 178 | buffer[0] = 0x00; |
| 179 | buffer[1] = 0x80; |
| 180 | buffer[2] = 0x00; |
| 181 | msg.addr = client->addr; |
| 182 | msg.flags = 0; |
| 183 | msg.len = 3; |
| 184 | msg.buf = buffer; |
| 185 | i2c_transfer(client->adapter, &msg, 1); |
| 186 | buffer[1] = 0x00; |
| 187 | i2c_transfer(client->adapter, &msg, 1); |
| 188 | |
| 189 | if (t->audmode != V4L2_TUNER_MODE_MONO) |
| 190 | mode++; |
| 191 | |
| 192 | if (mpx_audio_modes[mode].audio_mode != AUD_MONO) { |
| 193 | switch (t->audmode) { |
| 194 | case V4L2_TUNER_MODE_MONO: |
| 195 | switch (mpx_audio_modes[mode].audio_mode) { |
| 196 | case AUD_A2: |
| 197 | source = mpx_audio_modes[mode].source; |
| 198 | break; |
| 199 | case AUD_NICAM: |
| 200 | source = 0x0000; |
| 201 | break; |
| 202 | case AUD_NICAM_L: |
| 203 | source = 0x0200; |
| 204 | break; |
| 205 | default: |
| 206 | break; |
| 207 | } |
| 208 | break; |
| 209 | case V4L2_TUNER_MODE_STEREO: |
| 210 | source = mpx_audio_modes[mode].source; |
| 211 | break; |
| 212 | case V4L2_TUNER_MODE_LANG1: |
| 213 | source = 0x0300; |
| 214 | break; |
| 215 | case V4L2_TUNER_MODE_LANG2: |
| 216 | source = 0x0400; |
| 217 | break; |
| 218 | } |
| 219 | source |= mpx_audio_modes[mode].source & 0x00ff; |
| 220 | } else |
| 221 | source = mpx_audio_modes[mode].source; |
| 222 | |
| 223 | mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus); |
| 224 | mpx_write(client, 0x12, 0x0008, source); |
| 225 | mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb); |
| 226 | mpx_write(client, 0x12, 0x000e, |
| 227 | mpx_audio_modes[mode].fm_prescale); |
| 228 | mpx_write(client, 0x12, 0x0010, |
| 229 | mpx_audio_modes[mode].nicam_prescale); |
| 230 | mpx_write(client, 0x12, 0x000d, |
| 231 | mpx_audio_modes[mode].scart_prescale); |
| 232 | mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system); |
| 233 | mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume); |
| 234 | if (mpx_audio_modes[mode].audio_mode == AUD_A2) |
| 235 | mpx_write(client, 0x10, 0x0022, |
| 236 | t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190); |
| 237 | |
| 238 | #ifdef MPX_DEBUG |
| 239 | { |
| 240 | u8 buf1[3], buf2[2]; |
| 241 | struct i2c_msg msgs[2]; |
| 242 | |
| 243 | v4l2_info(client, |
| 244 | "MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n", |
| 245 | mpx_audio_modes[mode].modus, |
| 246 | source, |
| 247 | mpx_audio_modes[mode].acb, |
| 248 | mpx_audio_modes[mode].fm_prescale, |
| 249 | mpx_audio_modes[mode].nicam_prescale, |
| 250 | mpx_audio_modes[mode].scart_prescale, |
| 251 | mpx_audio_modes[mode].system, |
| 252 | mpx_audio_modes[mode].volume); |
| 253 | buf1[0] = 0x11; |
| 254 | buf1[1] = 0x00; |
| 255 | buf1[2] = 0x7e; |
| 256 | msgs[0].addr = client->addr; |
| 257 | msgs[0].flags = 0; |
| 258 | msgs[0].len = 3; |
| 259 | msgs[0].buf = buf1; |
| 260 | msgs[1].addr = client->addr; |
| 261 | msgs[1].flags = I2C_M_RD; |
| 262 | msgs[1].len = 2; |
| 263 | msgs[1].buf = buf2; |
| 264 | i2c_transfer(client->adapter, msgs, 2); |
| 265 | v4l2_info(client, "MPX system: %02x%02x\n", |
| 266 | buf2[0], buf2[1]); |
| 267 | buf1[0] = 0x11; |
| 268 | buf1[1] = 0x02; |
| 269 | buf1[2] = 0x00; |
| 270 | i2c_transfer(client->adapter, msgs, 2); |
| 271 | v4l2_info(client, "MPX status: %02x%02x\n", |
| 272 | buf2[0], buf2[1]); |
| 273 | } |
| 274 | #endif |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | |
| 279 | static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std) |
| 280 | { |
| 281 | struct sony_btf_mpx *t = to_state(sd); |
| 282 | int default_mpx_mode = 0; |
| 283 | |
| 284 | if (std & V4L2_STD_PAL_BG) |
| 285 | default_mpx_mode = 1; |
| 286 | else if (std & V4L2_STD_PAL_I) |
| 287 | default_mpx_mode = 4; |
| 288 | else if (std & V4L2_STD_PAL_DK) |
| 289 | default_mpx_mode = 6; |
| 290 | else if (std & V4L2_STD_SECAM_L) |
| 291 | default_mpx_mode = 11; |
| 292 | |
| 293 | if (default_mpx_mode != t->mpxmode) { |
| 294 | t->mpxmode = default_mpx_mode; |
| 295 | mpx_setup(t); |
| 296 | } |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) |
| 301 | { |
| 302 | struct sony_btf_mpx *t = to_state(sd); |
| 303 | |
| 304 | vt->capability = V4L2_TUNER_CAP_NORM | |
| 305 | V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 | |
| 306 | V4L2_TUNER_CAP_LANG2; |
| 307 | vt->rxsubchans = V4L2_TUNER_SUB_MONO | |
| 308 | V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 | |
| 309 | V4L2_TUNER_SUB_LANG2; |
| 310 | vt->audmode = t->audmode; |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) |
| 315 | { |
| 316 | struct sony_btf_mpx *t = to_state(sd); |
| 317 | |
| 318 | if (vt->type != V4L2_TUNER_ANALOG_TV) |
| 319 | return -EINVAL; |
| 320 | |
| 321 | if (vt->audmode != t->audmode) { |
| 322 | t->audmode = vt->audmode; |
| 323 | mpx_setup(t); |
| 324 | } |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | /* --------------------------------------------------------------------------*/ |
| 329 | |
| 330 | static const struct v4l2_subdev_core_ops sony_btf_mpx_core_ops = { |
| 331 | .s_std = sony_btf_mpx_s_std, |
| 332 | }; |
| 333 | |
| 334 | static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = { |
| 335 | .s_tuner = sony_btf_mpx_s_tuner, |
| 336 | .g_tuner = sony_btf_mpx_g_tuner, |
| 337 | }; |
| 338 | |
| 339 | static const struct v4l2_subdev_ops sony_btf_mpx_ops = { |
| 340 | .core = &sony_btf_mpx_core_ops, |
| 341 | .tuner = &sony_btf_mpx_tuner_ops, |
| 342 | }; |
| 343 | |
| 344 | /* --------------------------------------------------------------------------*/ |
| 345 | |
| 346 | static int sony_btf_mpx_probe(struct i2c_client *client, |
| 347 | const struct i2c_device_id *id) |
| 348 | { |
| 349 | struct sony_btf_mpx *t; |
| 350 | struct v4l2_subdev *sd; |
| 351 | |
| 352 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
| 353 | return -ENODEV; |
| 354 | |
| 355 | v4l_info(client, "chip found @ 0x%x (%s)\n", |
| 356 | client->addr << 1, client->adapter->name); |
| 357 | |
| 358 | t = kzalloc(sizeof(struct sony_btf_mpx), GFP_KERNEL); |
| 359 | if (t == NULL) |
| 360 | return -ENOMEM; |
| 361 | |
| 362 | sd = &t->sd; |
| 363 | v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops); |
| 364 | |
| 365 | /* Initialize sony_btf_mpx */ |
| 366 | t->mpxmode = 0; |
| 367 | t->audmode = V4L2_TUNER_MODE_STEREO; |
| 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | static int sony_btf_mpx_remove(struct i2c_client *client) |
| 373 | { |
| 374 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 375 | |
| 376 | v4l2_device_unregister_subdev(sd); |
| 377 | kfree(to_state(sd)); |
| 378 | |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | /* ----------------------------------------------------------------------- */ |
| 383 | |
| 384 | static const struct i2c_device_id sony_btf_mpx_id[] = { |
| 385 | { "sony-btf-mpx", 0 }, |
| 386 | { } |
| 387 | }; |
| 388 | MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id); |
| 389 | |
| 390 | static struct i2c_driver sony_btf_mpx_driver = { |
| 391 | .driver = { |
| 392 | .owner = THIS_MODULE, |
| 393 | .name = "sony-btf-mpx", |
| 394 | }, |
| 395 | .probe = sony_btf_mpx_probe, |
| 396 | .remove = sony_btf_mpx_remove, |
| 397 | .id_table = sony_btf_mpx_id, |
| 398 | }; |
| 399 | module_i2c_driver(sony_btf_mpx_driver); |