Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver |
| 3 | * |
| 4 | * Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com> |
| 5 | * Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com> |
| 6 | * |
| 7 | * FIXME: Need to port to DVB v5.2 API |
| 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 as |
| 11 | * published by the Free Software Foundation version 2. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <asm/div64.h> |
| 21 | |
| 22 | #include "dvb_frontend.h" |
| 23 | #include "mb86a20s.h" |
| 24 | |
| 25 | static int debug = 1; |
| 26 | module_param(debug, int, 0644); |
| 27 | MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); |
| 28 | |
| 29 | #define rc(args...) do { \ |
| 30 | printk(KERN_ERR "mb86a20s: " args); \ |
| 31 | } while (0) |
| 32 | |
| 33 | #define dprintk(args...) \ |
| 34 | do { \ |
| 35 | if (debug) { \ |
| 36 | printk(KERN_DEBUG "mb86a20s: %s: ", __func__); \ |
| 37 | printk(args); \ |
| 38 | } \ |
| 39 | } while (0) |
| 40 | |
| 41 | struct mb86a20s_state { |
| 42 | struct i2c_adapter *i2c; |
| 43 | const struct mb86a20s_config *config; |
| 44 | |
| 45 | struct dvb_frontend frontend; |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 46 | |
| 47 | bool need_init; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 48 | }; |
| 49 | |
| 50 | struct regdata { |
| 51 | u8 reg; |
| 52 | u8 data; |
| 53 | }; |
| 54 | |
| 55 | /* |
| 56 | * Initialization sequence: Use whatevere default values that PV SBTVD |
| 57 | * does on its initialisation, obtained via USB snoop |
| 58 | */ |
| 59 | static struct regdata mb86a20s_init[] = { |
| 60 | { 0x70, 0x0f }, |
| 61 | { 0x70, 0xff }, |
| 62 | { 0x08, 0x01 }, |
| 63 | { 0x09, 0x3e }, |
| 64 | { 0x50, 0xd1 }, |
| 65 | { 0x51, 0x22 }, |
| 66 | { 0x39, 0x01 }, |
| 67 | { 0x71, 0x00 }, |
| 68 | { 0x28, 0x2a }, |
| 69 | { 0x29, 0x00 }, |
| 70 | { 0x2a, 0xff }, |
| 71 | { 0x2b, 0x80 }, |
| 72 | { 0x28, 0x20 }, |
| 73 | { 0x29, 0x33 }, |
| 74 | { 0x2a, 0xdf }, |
| 75 | { 0x2b, 0xa9 }, |
| 76 | { 0x3b, 0x21 }, |
| 77 | { 0x3c, 0x3a }, |
| 78 | { 0x01, 0x0d }, |
| 79 | { 0x04, 0x08 }, |
| 80 | { 0x05, 0x05 }, |
| 81 | { 0x04, 0x0e }, |
| 82 | { 0x05, 0x00 }, |
| 83 | { 0x04, 0x0f }, |
| 84 | { 0x05, 0x14 }, |
| 85 | { 0x04, 0x0b }, |
| 86 | { 0x05, 0x8c }, |
| 87 | { 0x04, 0x00 }, |
| 88 | { 0x05, 0x00 }, |
| 89 | { 0x04, 0x01 }, |
| 90 | { 0x05, 0x07 }, |
| 91 | { 0x04, 0x02 }, |
| 92 | { 0x05, 0x0f }, |
| 93 | { 0x04, 0x03 }, |
| 94 | { 0x05, 0xa0 }, |
| 95 | { 0x04, 0x09 }, |
| 96 | { 0x05, 0x00 }, |
| 97 | { 0x04, 0x0a }, |
| 98 | { 0x05, 0xff }, |
| 99 | { 0x04, 0x27 }, |
| 100 | { 0x05, 0x64 }, |
| 101 | { 0x04, 0x28 }, |
| 102 | { 0x05, 0x00 }, |
| 103 | { 0x04, 0x1e }, |
| 104 | { 0x05, 0xff }, |
| 105 | { 0x04, 0x29 }, |
| 106 | { 0x05, 0x0a }, |
| 107 | { 0x04, 0x32 }, |
| 108 | { 0x05, 0x0a }, |
| 109 | { 0x04, 0x14 }, |
| 110 | { 0x05, 0x02 }, |
| 111 | { 0x04, 0x04 }, |
| 112 | { 0x05, 0x00 }, |
| 113 | { 0x04, 0x05 }, |
| 114 | { 0x05, 0x22 }, |
| 115 | { 0x04, 0x06 }, |
| 116 | { 0x05, 0x0e }, |
| 117 | { 0x04, 0x07 }, |
| 118 | { 0x05, 0xd8 }, |
| 119 | { 0x04, 0x12 }, |
| 120 | { 0x05, 0x00 }, |
| 121 | { 0x04, 0x13 }, |
| 122 | { 0x05, 0xff }, |
| 123 | { 0x52, 0x01 }, |
| 124 | { 0x50, 0xa7 }, |
| 125 | { 0x51, 0x00 }, |
| 126 | { 0x50, 0xa8 }, |
| 127 | { 0x51, 0xff }, |
| 128 | { 0x50, 0xa9 }, |
| 129 | { 0x51, 0xff }, |
| 130 | { 0x50, 0xaa }, |
| 131 | { 0x51, 0x00 }, |
| 132 | { 0x50, 0xab }, |
| 133 | { 0x51, 0xff }, |
| 134 | { 0x50, 0xac }, |
| 135 | { 0x51, 0xff }, |
| 136 | { 0x50, 0xad }, |
| 137 | { 0x51, 0x00 }, |
| 138 | { 0x50, 0xae }, |
| 139 | { 0x51, 0xff }, |
| 140 | { 0x50, 0xaf }, |
| 141 | { 0x51, 0xff }, |
| 142 | { 0x5e, 0x07 }, |
| 143 | { 0x50, 0xdc }, |
| 144 | { 0x51, 0x01 }, |
| 145 | { 0x50, 0xdd }, |
| 146 | { 0x51, 0xf4 }, |
| 147 | { 0x50, 0xde }, |
| 148 | { 0x51, 0x01 }, |
| 149 | { 0x50, 0xdf }, |
| 150 | { 0x51, 0xf4 }, |
| 151 | { 0x50, 0xe0 }, |
| 152 | { 0x51, 0x01 }, |
| 153 | { 0x50, 0xe1 }, |
| 154 | { 0x51, 0xf4 }, |
| 155 | { 0x50, 0xb0 }, |
| 156 | { 0x51, 0x07 }, |
| 157 | { 0x50, 0xb2 }, |
| 158 | { 0x51, 0xff }, |
| 159 | { 0x50, 0xb3 }, |
| 160 | { 0x51, 0xff }, |
| 161 | { 0x50, 0xb4 }, |
| 162 | { 0x51, 0xff }, |
| 163 | { 0x50, 0xb5 }, |
| 164 | { 0x51, 0xff }, |
| 165 | { 0x50, 0xb6 }, |
| 166 | { 0x51, 0xff }, |
| 167 | { 0x50, 0xb7 }, |
| 168 | { 0x51, 0xff }, |
| 169 | { 0x50, 0x50 }, |
| 170 | { 0x51, 0x02 }, |
| 171 | { 0x50, 0x51 }, |
| 172 | { 0x51, 0x04 }, |
| 173 | { 0x45, 0x04 }, |
| 174 | { 0x48, 0x04 }, |
| 175 | { 0x50, 0xd5 }, |
Mauro Carvalho Chehab | 7572f9c | 2010-10-03 16:48:49 -0300 | [diff] [blame] | 176 | { 0x51, 0x01 }, /* Serial */ |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 177 | { 0x50, 0xd6 }, |
| 178 | { 0x51, 0x1f }, |
| 179 | { 0x50, 0xd2 }, |
| 180 | { 0x51, 0x03 }, |
| 181 | { 0x50, 0xd7 }, |
| 182 | { 0x51, 0x3f }, |
| 183 | { 0x1c, 0x01 }, |
| 184 | { 0x28, 0x06 }, |
| 185 | { 0x29, 0x00 }, |
| 186 | { 0x2a, 0x00 }, |
| 187 | { 0x2b, 0x03 }, |
| 188 | { 0x28, 0x07 }, |
| 189 | { 0x29, 0x00 }, |
| 190 | { 0x2a, 0x00 }, |
| 191 | { 0x2b, 0x0d }, |
| 192 | { 0x28, 0x08 }, |
| 193 | { 0x29, 0x00 }, |
| 194 | { 0x2a, 0x00 }, |
| 195 | { 0x2b, 0x02 }, |
| 196 | { 0x28, 0x09 }, |
| 197 | { 0x29, 0x00 }, |
| 198 | { 0x2a, 0x00 }, |
| 199 | { 0x2b, 0x01 }, |
| 200 | { 0x28, 0x0a }, |
| 201 | { 0x29, 0x00 }, |
| 202 | { 0x2a, 0x00 }, |
| 203 | { 0x2b, 0x21 }, |
| 204 | { 0x28, 0x0b }, |
| 205 | { 0x29, 0x00 }, |
| 206 | { 0x2a, 0x00 }, |
| 207 | { 0x2b, 0x29 }, |
| 208 | { 0x28, 0x0c }, |
| 209 | { 0x29, 0x00 }, |
| 210 | { 0x2a, 0x00 }, |
| 211 | { 0x2b, 0x16 }, |
| 212 | { 0x28, 0x0d }, |
| 213 | { 0x29, 0x00 }, |
| 214 | { 0x2a, 0x00 }, |
| 215 | { 0x2b, 0x31 }, |
| 216 | { 0x28, 0x0e }, |
| 217 | { 0x29, 0x00 }, |
| 218 | { 0x2a, 0x00 }, |
| 219 | { 0x2b, 0x0e }, |
| 220 | { 0x28, 0x0f }, |
| 221 | { 0x29, 0x00 }, |
| 222 | { 0x2a, 0x00 }, |
| 223 | { 0x2b, 0x4e }, |
| 224 | { 0x28, 0x10 }, |
| 225 | { 0x29, 0x00 }, |
| 226 | { 0x2a, 0x00 }, |
| 227 | { 0x2b, 0x46 }, |
| 228 | { 0x28, 0x11 }, |
| 229 | { 0x29, 0x00 }, |
| 230 | { 0x2a, 0x00 }, |
| 231 | { 0x2b, 0x0f }, |
| 232 | { 0x28, 0x12 }, |
| 233 | { 0x29, 0x00 }, |
| 234 | { 0x2a, 0x00 }, |
| 235 | { 0x2b, 0x56 }, |
| 236 | { 0x28, 0x13 }, |
| 237 | { 0x29, 0x00 }, |
| 238 | { 0x2a, 0x00 }, |
| 239 | { 0x2b, 0x35 }, |
| 240 | { 0x28, 0x14 }, |
| 241 | { 0x29, 0x00 }, |
| 242 | { 0x2a, 0x01 }, |
| 243 | { 0x2b, 0xbe }, |
| 244 | { 0x28, 0x15 }, |
| 245 | { 0x29, 0x00 }, |
| 246 | { 0x2a, 0x01 }, |
| 247 | { 0x2b, 0x84 }, |
| 248 | { 0x28, 0x16 }, |
| 249 | { 0x29, 0x00 }, |
| 250 | { 0x2a, 0x03 }, |
| 251 | { 0x2b, 0xee }, |
| 252 | { 0x28, 0x17 }, |
| 253 | { 0x29, 0x00 }, |
| 254 | { 0x2a, 0x00 }, |
| 255 | { 0x2b, 0x98 }, |
| 256 | { 0x28, 0x18 }, |
| 257 | { 0x29, 0x00 }, |
| 258 | { 0x2a, 0x00 }, |
| 259 | { 0x2b, 0x9f }, |
| 260 | { 0x28, 0x19 }, |
| 261 | { 0x29, 0x00 }, |
| 262 | { 0x2a, 0x07 }, |
| 263 | { 0x2b, 0xb2 }, |
| 264 | { 0x28, 0x1a }, |
| 265 | { 0x29, 0x00 }, |
| 266 | { 0x2a, 0x06 }, |
| 267 | { 0x2b, 0xc2 }, |
| 268 | { 0x28, 0x1b }, |
| 269 | { 0x29, 0x00 }, |
| 270 | { 0x2a, 0x07 }, |
| 271 | { 0x2b, 0x4a }, |
| 272 | { 0x28, 0x1c }, |
| 273 | { 0x29, 0x00 }, |
| 274 | { 0x2a, 0x01 }, |
| 275 | { 0x2b, 0xbc }, |
| 276 | { 0x28, 0x1d }, |
| 277 | { 0x29, 0x00 }, |
| 278 | { 0x2a, 0x04 }, |
| 279 | { 0x2b, 0xba }, |
| 280 | { 0x28, 0x1e }, |
| 281 | { 0x29, 0x00 }, |
| 282 | { 0x2a, 0x06 }, |
| 283 | { 0x2b, 0x14 }, |
| 284 | { 0x50, 0x1e }, |
| 285 | { 0x51, 0x5d }, |
| 286 | { 0x50, 0x22 }, |
| 287 | { 0x51, 0x00 }, |
| 288 | { 0x50, 0x23 }, |
| 289 | { 0x51, 0xc8 }, |
| 290 | { 0x50, 0x24 }, |
| 291 | { 0x51, 0x00 }, |
| 292 | { 0x50, 0x25 }, |
| 293 | { 0x51, 0xf0 }, |
| 294 | { 0x50, 0x26 }, |
| 295 | { 0x51, 0x00 }, |
| 296 | { 0x50, 0x27 }, |
| 297 | { 0x51, 0xc3 }, |
| 298 | { 0x50, 0x39 }, |
| 299 | { 0x51, 0x02 }, |
| 300 | { 0x50, 0xd5 }, |
| 301 | { 0x51, 0x01 }, |
| 302 | { 0xd0, 0x00 }, |
| 303 | }; |
| 304 | |
| 305 | static struct regdata mb86a20s_reset_reception[] = { |
| 306 | { 0x70, 0xf0 }, |
| 307 | { 0x70, 0xff }, |
| 308 | { 0x08, 0x01 }, |
| 309 | { 0x08, 0x00 }, |
| 310 | }; |
| 311 | |
| 312 | static int mb86a20s_i2c_writereg(struct mb86a20s_state *state, |
| 313 | u8 i2c_addr, int reg, int data) |
| 314 | { |
| 315 | u8 buf[] = { reg, data }; |
| 316 | struct i2c_msg msg = { |
| 317 | .addr = i2c_addr, .flags = 0, .buf = buf, .len = 2 |
| 318 | }; |
| 319 | int rc; |
| 320 | |
| 321 | rc = i2c_transfer(state->i2c, &msg, 1); |
| 322 | if (rc != 1) { |
Mauro Carvalho Chehab | 7570800 | 2011-01-14 08:50:00 -0300 | [diff] [blame] | 323 | printk("%s: writereg error (rc == %i, reg == 0x%02x," |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 324 | " data == 0x%02x)\n", __func__, rc, reg, data); |
| 325 | return rc; |
| 326 | } |
| 327 | |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state, |
| 332 | u8 i2c_addr, struct regdata *rd, int size) |
| 333 | { |
| 334 | int i, rc; |
| 335 | |
| 336 | for (i = 0; i < size; i++) { |
| 337 | rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg, |
| 338 | rd[i].data); |
| 339 | if (rc < 0) |
| 340 | return rc; |
| 341 | } |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | static int mb86a20s_i2c_readreg(struct mb86a20s_state *state, |
| 346 | u8 i2c_addr, u8 reg) |
| 347 | { |
| 348 | u8 val; |
| 349 | int rc; |
| 350 | struct i2c_msg msg[] = { |
| 351 | { .addr = i2c_addr, .flags = 0, .buf = ®, .len = 1 }, |
| 352 | { .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 } |
| 353 | }; |
| 354 | |
| 355 | rc = i2c_transfer(state->i2c, msg, 2); |
| 356 | |
| 357 | if (rc != 2) { |
Mauro Carvalho Chehab | 7570800 | 2011-01-14 08:50:00 -0300 | [diff] [blame] | 358 | rc("%s: reg=0x%x (error=%d)\n", __func__, reg, rc); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 359 | return rc; |
| 360 | } |
| 361 | |
| 362 | return val; |
| 363 | } |
| 364 | |
| 365 | #define mb86a20s_readreg(state, reg) \ |
| 366 | mb86a20s_i2c_readreg(state, state->config->demod_address, reg) |
| 367 | #define mb86a20s_writereg(state, reg, val) \ |
| 368 | mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val) |
| 369 | #define mb86a20s_writeregdata(state, regdata) \ |
| 370 | mb86a20s_i2c_writeregdata(state, state->config->demod_address, \ |
| 371 | regdata, ARRAY_SIZE(regdata)) |
| 372 | |
| 373 | static int mb86a20s_initfe(struct dvb_frontend *fe) |
| 374 | { |
| 375 | struct mb86a20s_state *state = fe->demodulator_priv; |
| 376 | int rc; |
Mauro Carvalho Chehab | 7572f9c | 2010-10-03 16:48:49 -0300 | [diff] [blame] | 377 | u8 regD5 = 1; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 378 | |
| 379 | dprintk("\n"); |
| 380 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 381 | if (fe->ops.i2c_gate_ctrl) |
| 382 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 383 | |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 384 | /* Initialize the frontend */ |
| 385 | rc = mb86a20s_writeregdata(state, mb86a20s_init); |
| 386 | if (rc < 0) |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 387 | goto err; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 388 | |
Mauro Carvalho Chehab | 7572f9c | 2010-10-03 16:48:49 -0300 | [diff] [blame] | 389 | if (!state->config->is_serial) { |
| 390 | regD5 &= ~1; |
| 391 | |
| 392 | rc = mb86a20s_writereg(state, 0x50, 0xd5); |
| 393 | if (rc < 0) |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 394 | goto err; |
Mauro Carvalho Chehab | 7572f9c | 2010-10-03 16:48:49 -0300 | [diff] [blame] | 395 | rc = mb86a20s_writereg(state, 0x51, regD5); |
| 396 | if (rc < 0) |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 397 | goto err; |
Mauro Carvalho Chehab | 7572f9c | 2010-10-03 16:48:49 -0300 | [diff] [blame] | 398 | } |
| 399 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 400 | if (fe->ops.i2c_gate_ctrl) |
| 401 | fe->ops.i2c_gate_ctrl(fe, 1); |
| 402 | |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 403 | err: |
| 404 | if (rc < 0) { |
| 405 | state->need_init = true; |
| 406 | printk(KERN_INFO "mb86a20s: Init failed. Will try again later\n"); |
| 407 | } else { |
| 408 | state->need_init = false; |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 409 | dprintk("Initialization succeeded.\n"); |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 410 | } |
| 411 | return rc; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength) |
| 415 | { |
| 416 | struct mb86a20s_state *state = fe->demodulator_priv; |
| 417 | unsigned rf_max, rf_min, rf; |
| 418 | u8 val; |
| 419 | |
| 420 | dprintk("\n"); |
| 421 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 422 | if (fe->ops.i2c_gate_ctrl) |
| 423 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 424 | |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 425 | /* Does a binary search to get RF strength */ |
| 426 | rf_max = 0xfff; |
| 427 | rf_min = 0; |
| 428 | do { |
| 429 | rf = (rf_max + rf_min) / 2; |
| 430 | mb86a20s_writereg(state, 0x04, 0x1f); |
| 431 | mb86a20s_writereg(state, 0x05, rf >> 8); |
| 432 | mb86a20s_writereg(state, 0x04, 0x20); |
| 433 | mb86a20s_writereg(state, 0x04, rf); |
| 434 | |
| 435 | val = mb86a20s_readreg(state, 0x02); |
| 436 | if (val & 0x08) |
| 437 | rf_min = (rf_max + rf_min) / 2; |
| 438 | else |
| 439 | rf_max = (rf_max + rf_min) / 2; |
| 440 | if (rf_max - rf_min < 4) { |
| 441 | *strength = (((rf_max + rf_min) / 2) * 65535) / 4095; |
| 442 | break; |
| 443 | } |
| 444 | } while (1); |
| 445 | |
| 446 | dprintk("signal strength = %d\n", *strength); |
| 447 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 448 | if (fe->ops.i2c_gate_ctrl) |
| 449 | fe->ops.i2c_gate_ctrl(fe, 1); |
| 450 | |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status) |
| 455 | { |
| 456 | struct mb86a20s_state *state = fe->demodulator_priv; |
| 457 | u8 val; |
| 458 | |
| 459 | dprintk("\n"); |
| 460 | *status = 0; |
| 461 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 462 | if (fe->ops.i2c_gate_ctrl) |
| 463 | fe->ops.i2c_gate_ctrl(fe, 0); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 464 | val = mb86a20s_readreg(state, 0x0a) & 0xf; |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 465 | if (fe->ops.i2c_gate_ctrl) |
| 466 | fe->ops.i2c_gate_ctrl(fe, 1); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 467 | |
| 468 | if (val >= 2) |
| 469 | *status |= FE_HAS_SIGNAL; |
| 470 | |
| 471 | if (val >= 4) |
| 472 | *status |= FE_HAS_CARRIER; |
| 473 | |
| 474 | if (val >= 5) |
| 475 | *status |= FE_HAS_VITERBI; |
| 476 | |
| 477 | if (val >= 7) |
| 478 | *status |= FE_HAS_SYNC; |
| 479 | |
| 480 | if (val >= 8) /* Maybe 9? */ |
| 481 | *status |= FE_HAS_LOCK; |
| 482 | |
| 483 | dprintk("val = %d, status = 0x%02x\n", val, *status); |
| 484 | |
| 485 | return 0; |
| 486 | } |
| 487 | |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 488 | static int mb86a20s_set_frontend(struct dvb_frontend *fe) |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 489 | { |
| 490 | struct mb86a20s_state *state = fe->demodulator_priv; |
| 491 | int rc; |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 492 | #if 0 |
| 493 | /* |
| 494 | * FIXME: Properly implement the set frontend properties |
| 495 | */ |
| 496 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
| 497 | #endif |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 498 | |
| 499 | dprintk("\n"); |
| 500 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 501 | if (fe->ops.i2c_gate_ctrl) |
| 502 | fe->ops.i2c_gate_ctrl(fe, 1); |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 503 | dprintk("Calling tuner set parameters\n"); |
Mauro Carvalho Chehab | 14d24d1 | 2011-12-24 12:24:33 -0300 | [diff] [blame] | 504 | fe->ops.tuner_ops.set_params(fe); |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 505 | |
Mauro Carvalho Chehab | c736a5f | 2011-01-14 11:10:05 -0300 | [diff] [blame] | 506 | /* |
| 507 | * Make it more reliable: if, for some reason, the initial |
| 508 | * device initialization doesn't happen, initialize it when |
| 509 | * a SBTVD parameters are adjusted. |
| 510 | * |
| 511 | * Unfortunately, due to a hard to track bug at tda829x/tda18271, |
| 512 | * the agc callback logic is not called during DVB attach time, |
| 513 | * causing mb86a20s to not be initialized with Kworld SBTVD. |
| 514 | * So, this hack is needed, in order to make Kworld SBTVD to work. |
| 515 | */ |
| 516 | if (state->need_init) |
| 517 | mb86a20s_initfe(fe); |
| 518 | |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 519 | if (fe->ops.i2c_gate_ctrl) |
| 520 | fe->ops.i2c_gate_ctrl(fe, 0); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 521 | rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception); |
Mauro Carvalho Chehab | 68541cd | 2010-10-03 05:27:59 -0300 | [diff] [blame] | 522 | if (fe->ops.i2c_gate_ctrl) |
| 523 | fe->ops.i2c_gate_ctrl(fe, 1); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 524 | |
| 525 | return rc; |
| 526 | } |
| 527 | |
Mauro Carvalho Chehab | 7c61d80 | 2011-12-30 11:30:21 -0300 | [diff] [blame^] | 528 | static int mb86a20s_get_frontend(struct dvb_frontend *fe) |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 529 | { |
Mauro Carvalho Chehab | 7c61d80 | 2011-12-30 11:30:21 -0300 | [diff] [blame^] | 530 | struct dtv_frontend_properties *p = &fe->dtv_property_cache; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 531 | |
| 532 | /* FIXME: For now, it does nothing */ |
| 533 | |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 534 | p->bandwidth_hz = 6000000; |
| 535 | p->transmission_mode = TRANSMISSION_MODE_AUTO; |
| 536 | p->guard_interval = GUARD_INTERVAL_AUTO; |
| 537 | p->isdbt_partial_reception = 0; |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 538 | |
| 539 | return 0; |
| 540 | } |
| 541 | |
| 542 | static int mb86a20s_tune(struct dvb_frontend *fe, |
Mauro Carvalho Chehab | 7e07222 | 2011-12-26 17:48:33 -0300 | [diff] [blame] | 543 | bool re_tune, |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 544 | unsigned int mode_flags, |
| 545 | unsigned int *delay, |
| 546 | fe_status_t *status) |
| 547 | { |
| 548 | int rc = 0; |
| 549 | |
| 550 | dprintk("\n"); |
| 551 | |
Mauro Carvalho Chehab | 7e07222 | 2011-12-26 17:48:33 -0300 | [diff] [blame] | 552 | if (re_tune) |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 553 | rc = mb86a20s_set_frontend(fe); |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 554 | |
| 555 | if (!(mode_flags & FE_TUNE_MODE_ONESHOT)) |
| 556 | mb86a20s_read_status(fe, status); |
| 557 | |
| 558 | return rc; |
| 559 | } |
| 560 | |
| 561 | static void mb86a20s_release(struct dvb_frontend *fe) |
| 562 | { |
| 563 | struct mb86a20s_state *state = fe->demodulator_priv; |
| 564 | |
| 565 | dprintk("\n"); |
| 566 | |
| 567 | kfree(state); |
| 568 | } |
| 569 | |
| 570 | static struct dvb_frontend_ops mb86a20s_ops; |
| 571 | |
| 572 | struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config, |
| 573 | struct i2c_adapter *i2c) |
| 574 | { |
| 575 | u8 rev; |
| 576 | |
| 577 | /* allocate memory for the internal state */ |
| 578 | struct mb86a20s_state *state = |
| 579 | kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL); |
| 580 | |
| 581 | dprintk("\n"); |
| 582 | if (state == NULL) { |
| 583 | rc("Unable to kzalloc\n"); |
| 584 | goto error; |
| 585 | } |
| 586 | |
| 587 | /* setup the state */ |
| 588 | state->config = config; |
| 589 | state->i2c = i2c; |
| 590 | |
| 591 | /* create dvb_frontend */ |
| 592 | memcpy(&state->frontend.ops, &mb86a20s_ops, |
| 593 | sizeof(struct dvb_frontend_ops)); |
| 594 | state->frontend.demodulator_priv = state; |
| 595 | |
| 596 | /* Check if it is a mb86a20s frontend */ |
| 597 | rev = mb86a20s_readreg(state, 0); |
| 598 | |
| 599 | if (rev == 0x13) { |
| 600 | printk(KERN_INFO "Detected a Fujitsu mb86a20s frontend\n"); |
| 601 | } else { |
| 602 | printk(KERN_ERR "Frontend revision %d is unknown - aborting.\n", |
| 603 | rev); |
| 604 | goto error; |
| 605 | } |
| 606 | |
| 607 | return &state->frontend; |
| 608 | |
| 609 | error: |
| 610 | kfree(state); |
| 611 | return NULL; |
| 612 | } |
| 613 | EXPORT_SYMBOL(mb86a20s_attach); |
| 614 | |
| 615 | static struct dvb_frontend_ops mb86a20s_ops = { |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 616 | .delsys = { SYS_ISDBT }, |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 617 | /* Use dib8000 values per default */ |
| 618 | .info = { |
| 619 | .name = "Fujitsu mb86A20s", |
| 620 | .type = FE_OFDM, |
| 621 | .caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER | |
| 622 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
| 623 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | |
| 624 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | |
| 625 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO | |
| 626 | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, |
| 627 | /* Actually, those values depend on the used tuner */ |
| 628 | .frequency_min = 45000000, |
| 629 | .frequency_max = 864000000, |
| 630 | .frequency_stepsize = 62500, |
| 631 | }, |
| 632 | |
| 633 | .release = mb86a20s_release, |
| 634 | |
| 635 | .init = mb86a20s_initfe, |
Mauro Carvalho Chehab | 2d76e22b | 2011-12-26 12:11:51 -0300 | [diff] [blame] | 636 | .set_frontend = mb86a20s_set_frontend, |
| 637 | .get_frontend = mb86a20s_get_frontend, |
Mauro Carvalho Chehab | b9ede79 | 2010-09-27 20:52:43 -0300 | [diff] [blame] | 638 | .read_status = mb86a20s_read_status, |
| 639 | .read_signal_strength = mb86a20s_read_signal_strength, |
| 640 | .tune = mb86a20s_tune, |
| 641 | }; |
| 642 | |
| 643 | MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware"); |
| 644 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); |
| 645 | MODULE_LICENSE("GPL"); |