Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 1 | /* |
| 2 | Auvitek AU8522 QAM/8VSB demodulator driver |
| 3 | |
Steven Toth | 6d89761 | 2008-09-03 17:12:12 -0300 | [diff] [blame] | 4 | Copyright (C) 2008 Steven Toth <stoth@linuxtv.org> |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/string.h> |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 26 | #include <linux/delay.h> |
| 27 | #include "dvb_frontend.h" |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 28 | #include "au8522.h" |
Devin Heitmueller | 0c44bf3 | 2009-03-11 02:59:56 -0300 | [diff] [blame] | 29 | #include "au8522_priv.h" |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 30 | |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 31 | static int debug; |
| 32 | |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 33 | /* Despite the name "hybrid_tuner", the framework works just as well for |
| 34 | hybrid demodulators as well... */ |
| 35 | static LIST_HEAD(hybrid_tuner_instance_list); |
Devin Heitmueller | 4ff5ed4 | 2009-03-11 03:00:45 -0300 | [diff] [blame] | 36 | static DEFINE_MUTEX(au8522_list_mutex); |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 37 | |
Devin Heitmueller | 62899a2 | 2009-03-15 18:48:52 -0300 | [diff] [blame] | 38 | #define dprintk(arg...)\ |
| 39 | do { if (debug)\ |
| 40 | printk(arg);\ |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 41 | } while (0) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 42 | |
| 43 | /* 16 bit registers, 8 bit values */ |
Devin Heitmueller | 0c44bf3 | 2009-03-11 02:59:56 -0300 | [diff] [blame] | 44 | int au8522_writereg(struct au8522_state *state, u16 reg, u8 data) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 45 | { |
| 46 | int ret; |
Devin Heitmueller | 62899a2 | 2009-03-15 18:48:52 -0300 | [diff] [blame] | 47 | u8 buf[] = { (reg >> 8) | 0x80, reg & 0xff, data }; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 48 | |
| 49 | struct i2c_msg msg = { .addr = state->config->demod_address, |
| 50 | .flags = 0, .buf = buf, .len = 3 }; |
| 51 | |
| 52 | ret = i2c_transfer(state->i2c, &msg, 1); |
| 53 | |
| 54 | if (ret != 1) |
| 55 | printk("%s: writereg error (reg == 0x%02x, val == 0x%04x, " |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 56 | "ret == %i)\n", __func__, reg, data, ret); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 57 | |
| 58 | return (ret != 1) ? -1 : 0; |
| 59 | } |
| 60 | |
Devin Heitmueller | 0c44bf3 | 2009-03-11 02:59:56 -0300 | [diff] [blame] | 61 | u8 au8522_readreg(struct au8522_state *state, u16 reg) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 62 | { |
| 63 | int ret; |
Devin Heitmueller | 62899a2 | 2009-03-15 18:48:52 -0300 | [diff] [blame] | 64 | u8 b0[] = { (reg >> 8) | 0x40, reg & 0xff }; |
| 65 | u8 b1[] = { 0 }; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 66 | |
Devin Heitmueller | 62899a2 | 2009-03-15 18:48:52 -0300 | [diff] [blame] | 67 | struct i2c_msg msg[] = { |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 68 | { .addr = state->config->demod_address, .flags = 0, |
| 69 | .buf = b0, .len = 2 }, |
| 70 | { .addr = state->config->demod_address, .flags = I2C_M_RD, |
| 71 | .buf = b1, .len = 1 } }; |
| 72 | |
| 73 | ret = i2c_transfer(state->i2c, msg, 2); |
| 74 | |
| 75 | if (ret != 2) |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 76 | printk(KERN_ERR "%s: readreg error (ret == %i)\n", |
| 77 | __func__, ret); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 78 | return b1[0]; |
| 79 | } |
| 80 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 81 | static int au8522_i2c_gate_ctrl(struct dvb_frontend *fe, int enable) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 82 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 83 | struct au8522_state *state = fe->demodulator_priv; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 84 | |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 85 | dprintk("%s(%d)\n", __func__, enable); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 86 | |
Devin Heitmueller | 7f2c983 | 2010-02-17 22:47:55 -0300 | [diff] [blame] | 87 | if (state->operational_mode == AU8522_ANALOG_MODE) { |
| 88 | /* We're being asked to manage the gate even though we're |
| 89 | not in digital mode. This can occur if we get switched |
| 90 | over to analog mode before the dvb_frontend kernel thread |
| 91 | has completely shutdown */ |
| 92 | return 0; |
| 93 | } |
| 94 | |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 95 | if (enable) |
| 96 | return au8522_writereg(state, 0x106, 1); |
| 97 | else |
| 98 | return au8522_writereg(state, 0x106, 0); |
| 99 | } |
| 100 | |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 101 | struct mse2snr_tab { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 102 | u16 val; |
| 103 | u16 data; |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 104 | }; |
| 105 | |
| 106 | /* VSB SNR lookup table */ |
| 107 | static struct mse2snr_tab vsb_mse2snr_tab[] = { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 108 | { 0, 270 }, |
| 109 | { 2, 250 }, |
| 110 | { 3, 240 }, |
| 111 | { 5, 230 }, |
| 112 | { 7, 220 }, |
| 113 | { 9, 210 }, |
| 114 | { 12, 200 }, |
| 115 | { 13, 195 }, |
| 116 | { 15, 190 }, |
| 117 | { 17, 185 }, |
| 118 | { 19, 180 }, |
| 119 | { 21, 175 }, |
| 120 | { 24, 170 }, |
| 121 | { 27, 165 }, |
| 122 | { 31, 160 }, |
| 123 | { 32, 158 }, |
| 124 | { 33, 156 }, |
| 125 | { 36, 152 }, |
| 126 | { 37, 150 }, |
| 127 | { 39, 148 }, |
| 128 | { 40, 146 }, |
| 129 | { 41, 144 }, |
| 130 | { 43, 142 }, |
| 131 | { 44, 140 }, |
| 132 | { 48, 135 }, |
| 133 | { 50, 130 }, |
| 134 | { 43, 142 }, |
| 135 | { 53, 125 }, |
| 136 | { 56, 120 }, |
| 137 | { 256, 115 }, |
| 138 | }; |
| 139 | |
| 140 | /* QAM64 SNR lookup table */ |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 141 | static struct mse2snr_tab qam64_mse2snr_tab[] = { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 142 | { 15, 0 }, |
| 143 | { 16, 290 }, |
| 144 | { 17, 288 }, |
| 145 | { 18, 286 }, |
| 146 | { 19, 284 }, |
| 147 | { 20, 282 }, |
| 148 | { 21, 281 }, |
| 149 | { 22, 279 }, |
| 150 | { 23, 277 }, |
| 151 | { 24, 275 }, |
| 152 | { 25, 273 }, |
| 153 | { 26, 271 }, |
| 154 | { 27, 269 }, |
| 155 | { 28, 268 }, |
| 156 | { 29, 266 }, |
| 157 | { 30, 264 }, |
| 158 | { 31, 262 }, |
| 159 | { 32, 260 }, |
| 160 | { 33, 259 }, |
| 161 | { 34, 258 }, |
| 162 | { 35, 256 }, |
| 163 | { 36, 255 }, |
| 164 | { 37, 254 }, |
| 165 | { 38, 252 }, |
| 166 | { 39, 251 }, |
| 167 | { 40, 250 }, |
| 168 | { 41, 249 }, |
| 169 | { 42, 248 }, |
| 170 | { 43, 246 }, |
| 171 | { 44, 245 }, |
| 172 | { 45, 244 }, |
| 173 | { 46, 242 }, |
| 174 | { 47, 241 }, |
| 175 | { 48, 240 }, |
| 176 | { 50, 239 }, |
| 177 | { 51, 238 }, |
| 178 | { 53, 237 }, |
| 179 | { 54, 236 }, |
| 180 | { 56, 235 }, |
| 181 | { 57, 234 }, |
| 182 | { 59, 233 }, |
| 183 | { 60, 232 }, |
| 184 | { 62, 231 }, |
| 185 | { 63, 230 }, |
| 186 | { 65, 229 }, |
| 187 | { 67, 228 }, |
| 188 | { 68, 227 }, |
| 189 | { 70, 226 }, |
| 190 | { 71, 225 }, |
| 191 | { 73, 224 }, |
| 192 | { 74, 223 }, |
| 193 | { 76, 222 }, |
| 194 | { 78, 221 }, |
| 195 | { 80, 220 }, |
| 196 | { 82, 219 }, |
| 197 | { 85, 218 }, |
| 198 | { 88, 217 }, |
| 199 | { 90, 216 }, |
| 200 | { 92, 215 }, |
| 201 | { 93, 214 }, |
| 202 | { 94, 212 }, |
| 203 | { 95, 211 }, |
| 204 | { 97, 210 }, |
| 205 | { 99, 209 }, |
| 206 | { 101, 208 }, |
| 207 | { 102, 207 }, |
| 208 | { 104, 206 }, |
| 209 | { 107, 205 }, |
| 210 | { 111, 204 }, |
| 211 | { 114, 203 }, |
| 212 | { 118, 202 }, |
| 213 | { 122, 201 }, |
| 214 | { 125, 200 }, |
| 215 | { 128, 199 }, |
| 216 | { 130, 198 }, |
| 217 | { 132, 197 }, |
| 218 | { 256, 190 }, |
| 219 | }; |
| 220 | |
| 221 | /* QAM256 SNR lookup table */ |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 222 | static struct mse2snr_tab qam256_mse2snr_tab[] = { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 223 | { 16, 0 }, |
| 224 | { 17, 400 }, |
| 225 | { 18, 398 }, |
| 226 | { 19, 396 }, |
| 227 | { 20, 394 }, |
| 228 | { 21, 392 }, |
| 229 | { 22, 390 }, |
| 230 | { 23, 388 }, |
| 231 | { 24, 386 }, |
| 232 | { 25, 384 }, |
| 233 | { 26, 382 }, |
| 234 | { 27, 380 }, |
| 235 | { 28, 379 }, |
| 236 | { 29, 378 }, |
| 237 | { 30, 377 }, |
| 238 | { 31, 376 }, |
| 239 | { 32, 375 }, |
| 240 | { 33, 374 }, |
| 241 | { 34, 373 }, |
| 242 | { 35, 372 }, |
| 243 | { 36, 371 }, |
| 244 | { 37, 370 }, |
| 245 | { 38, 362 }, |
| 246 | { 39, 354 }, |
| 247 | { 40, 346 }, |
| 248 | { 41, 338 }, |
| 249 | { 42, 330 }, |
| 250 | { 43, 328 }, |
| 251 | { 44, 326 }, |
| 252 | { 45, 324 }, |
| 253 | { 46, 322 }, |
| 254 | { 47, 320 }, |
| 255 | { 48, 319 }, |
| 256 | { 49, 318 }, |
| 257 | { 50, 317 }, |
| 258 | { 51, 316 }, |
| 259 | { 52, 315 }, |
| 260 | { 53, 314 }, |
| 261 | { 54, 313 }, |
| 262 | { 55, 312 }, |
| 263 | { 56, 311 }, |
| 264 | { 57, 310 }, |
| 265 | { 58, 308 }, |
| 266 | { 59, 306 }, |
| 267 | { 60, 304 }, |
| 268 | { 61, 302 }, |
| 269 | { 62, 300 }, |
| 270 | { 63, 298 }, |
| 271 | { 65, 295 }, |
| 272 | { 68, 294 }, |
| 273 | { 70, 293 }, |
| 274 | { 73, 292 }, |
| 275 | { 76, 291 }, |
| 276 | { 78, 290 }, |
| 277 | { 79, 289 }, |
| 278 | { 81, 288 }, |
| 279 | { 82, 287 }, |
| 280 | { 83, 286 }, |
| 281 | { 84, 285 }, |
| 282 | { 85, 284 }, |
| 283 | { 86, 283 }, |
| 284 | { 88, 282 }, |
| 285 | { 89, 281 }, |
| 286 | { 256, 280 }, |
| 287 | }; |
| 288 | |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 289 | static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse, |
| 290 | u16 *snr) |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 291 | { |
| 292 | int i, ret = -EINVAL; |
| 293 | dprintk("%s()\n", __func__); |
| 294 | |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 295 | for (i = 0; i < sz; i++) { |
| 296 | if (mse < tab[i].val) { |
| 297 | *snr = tab[i].data; |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 298 | ret = 0; |
| 299 | break; |
| 300 | } |
| 301 | } |
| 302 | dprintk("%s() snr=%d\n", __func__, *snr); |
| 303 | return ret; |
| 304 | } |
| 305 | |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 306 | static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq) |
| 307 | { |
| 308 | struct au8522_state *state = fe->demodulator_priv; |
Michael Krufky | df76de0 | 2008-09-03 16:46:40 -0300 | [diff] [blame] | 309 | u8 r0b5, r0b6, r0b7; |
| 310 | char *ifmhz; |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 311 | |
| 312 | switch (if_freq) { |
| 313 | case AU8522_IF_3_25MHZ: |
Michael Krufky | df76de0 | 2008-09-03 16:46:40 -0300 | [diff] [blame] | 314 | ifmhz = "3.25"; |
| 315 | r0b5 = 0x00; |
| 316 | r0b6 = 0x3d; |
| 317 | r0b7 = 0xa0; |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 318 | break; |
| 319 | case AU8522_IF_4MHZ: |
Michael Krufky | df76de0 | 2008-09-03 16:46:40 -0300 | [diff] [blame] | 320 | ifmhz = "4.00"; |
| 321 | r0b5 = 0x00; |
| 322 | r0b6 = 0x4b; |
| 323 | r0b7 = 0xd9; |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 324 | break; |
| 325 | case AU8522_IF_6MHZ: |
Michael Krufky | df76de0 | 2008-09-03 16:46:40 -0300 | [diff] [blame] | 326 | ifmhz = "6.00"; |
| 327 | r0b5 = 0xfb; |
| 328 | r0b6 = 0x8e; |
| 329 | r0b7 = 0x39; |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 330 | break; |
| 331 | default: |
| 332 | dprintk("%s() IF Frequency not supported\n", __func__); |
| 333 | return -EINVAL; |
| 334 | } |
Michael Krufky | df76de0 | 2008-09-03 16:46:40 -0300 | [diff] [blame] | 335 | dprintk("%s() %s MHz\n", __func__, ifmhz); |
| 336 | au8522_writereg(state, 0x80b5, r0b5); |
| 337 | au8522_writereg(state, 0x80b6, r0b6); |
| 338 | au8522_writereg(state, 0x80b7, r0b7); |
| 339 | |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 340 | return 0; |
| 341 | } |
| 342 | |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 343 | /* VSB Modulation table */ |
| 344 | static struct { |
| 345 | u16 reg; |
| 346 | u16 data; |
| 347 | } VSB_mod_tab[] = { |
| 348 | { 0x8090, 0x84 }, |
| 349 | { 0x4092, 0x11 }, |
| 350 | { 0x2005, 0x00 }, |
| 351 | { 0x8091, 0x80 }, |
| 352 | { 0x80a3, 0x0c }, |
| 353 | { 0x80a4, 0xe8 }, |
| 354 | { 0x8081, 0xc4 }, |
| 355 | { 0x80a5, 0x40 }, |
| 356 | { 0x80a7, 0x40 }, |
| 357 | { 0x80a6, 0x67 }, |
| 358 | { 0x8262, 0x20 }, |
| 359 | { 0x821c, 0x30 }, |
| 360 | { 0x80d8, 0x1a }, |
| 361 | { 0x8227, 0xa0 }, |
| 362 | { 0x8121, 0xff }, |
| 363 | { 0x80a8, 0xf0 }, |
| 364 | { 0x80a9, 0x05 }, |
| 365 | { 0x80aa, 0x77 }, |
| 366 | { 0x80ab, 0xf0 }, |
| 367 | { 0x80ac, 0x05 }, |
| 368 | { 0x80ad, 0x77 }, |
| 369 | { 0x80ae, 0x41 }, |
| 370 | { 0x80af, 0x66 }, |
| 371 | { 0x821b, 0xcc }, |
| 372 | { 0x821d, 0x80 }, |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 373 | { 0x80a4, 0xe8 }, |
| 374 | { 0x8231, 0x13 }, |
| 375 | }; |
| 376 | |
Frank Dischner | 040d4cb | 2009-06-14 23:05:20 -0300 | [diff] [blame] | 377 | /* QAM64 Modulation table */ |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 378 | static struct { |
| 379 | u16 reg; |
| 380 | u16 data; |
Frank Dischner | 040d4cb | 2009-06-14 23:05:20 -0300 | [diff] [blame] | 381 | } QAM64_mod_tab[] = { |
| 382 | { 0x00a3, 0x09 }, |
| 383 | { 0x00a4, 0x00 }, |
| 384 | { 0x0081, 0xc4 }, |
| 385 | { 0x00a5, 0x40 }, |
| 386 | { 0x00aa, 0x77 }, |
| 387 | { 0x00ad, 0x77 }, |
| 388 | { 0x00a6, 0x67 }, |
| 389 | { 0x0262, 0x20 }, |
| 390 | { 0x021c, 0x30 }, |
| 391 | { 0x00b8, 0x3e }, |
| 392 | { 0x00b9, 0xf0 }, |
| 393 | { 0x00ba, 0x01 }, |
| 394 | { 0x00bb, 0x18 }, |
| 395 | { 0x00bc, 0x50 }, |
| 396 | { 0x00bd, 0x00 }, |
| 397 | { 0x00be, 0xea }, |
| 398 | { 0x00bf, 0xef }, |
| 399 | { 0x00c0, 0xfc }, |
| 400 | { 0x00c1, 0xbd }, |
| 401 | { 0x00c2, 0x1f }, |
| 402 | { 0x00c3, 0xfc }, |
| 403 | { 0x00c4, 0xdd }, |
| 404 | { 0x00c5, 0xaf }, |
| 405 | { 0x00c6, 0x00 }, |
| 406 | { 0x00c7, 0x38 }, |
| 407 | { 0x00c8, 0x30 }, |
| 408 | { 0x00c9, 0x05 }, |
| 409 | { 0x00ca, 0x4a }, |
| 410 | { 0x00cb, 0xd0 }, |
| 411 | { 0x00cc, 0x01 }, |
| 412 | { 0x00cd, 0xd9 }, |
| 413 | { 0x00ce, 0x6f }, |
| 414 | { 0x00cf, 0xf9 }, |
| 415 | { 0x00d0, 0x70 }, |
| 416 | { 0x00d1, 0xdf }, |
| 417 | { 0x00d2, 0xf7 }, |
| 418 | { 0x00d3, 0xc2 }, |
| 419 | { 0x00d4, 0xdf }, |
| 420 | { 0x00d5, 0x02 }, |
| 421 | { 0x00d6, 0x9a }, |
| 422 | { 0x00d7, 0xd0 }, |
| 423 | { 0x0250, 0x0d }, |
| 424 | { 0x0251, 0xcd }, |
| 425 | { 0x0252, 0xe0 }, |
| 426 | { 0x0253, 0x05 }, |
| 427 | { 0x0254, 0xa7 }, |
| 428 | { 0x0255, 0xff }, |
| 429 | { 0x0256, 0xed }, |
| 430 | { 0x0257, 0x5b }, |
| 431 | { 0x0258, 0xae }, |
| 432 | { 0x0259, 0xe6 }, |
| 433 | { 0x025a, 0x3d }, |
| 434 | { 0x025b, 0x0f }, |
| 435 | { 0x025c, 0x0d }, |
| 436 | { 0x025d, 0xea }, |
| 437 | { 0x025e, 0xf2 }, |
| 438 | { 0x025f, 0x51 }, |
| 439 | { 0x0260, 0xf5 }, |
| 440 | { 0x0261, 0x06 }, |
| 441 | { 0x021a, 0x00 }, |
| 442 | { 0x0546, 0x40 }, |
| 443 | { 0x0210, 0xc7 }, |
| 444 | { 0x0211, 0xaa }, |
| 445 | { 0x0212, 0xab }, |
| 446 | { 0x0213, 0x02 }, |
| 447 | { 0x0502, 0x00 }, |
| 448 | { 0x0121, 0x04 }, |
| 449 | { 0x0122, 0x04 }, |
| 450 | { 0x052e, 0x10 }, |
| 451 | { 0x00a4, 0xca }, |
| 452 | { 0x00a7, 0x40 }, |
| 453 | { 0x0526, 0x01 }, |
| 454 | }; |
| 455 | |
| 456 | /* QAM256 Modulation table */ |
| 457 | static struct { |
| 458 | u16 reg; |
| 459 | u16 data; |
| 460 | } QAM256_mod_tab[] = { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 461 | { 0x80a3, 0x09 }, |
| 462 | { 0x80a4, 0x00 }, |
| 463 | { 0x8081, 0xc4 }, |
| 464 | { 0x80a5, 0x40 }, |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 465 | { 0x80aa, 0x77 }, |
| 466 | { 0x80ad, 0x77 }, |
| 467 | { 0x80a6, 0x67 }, |
| 468 | { 0x8262, 0x20 }, |
| 469 | { 0x821c, 0x30 }, |
| 470 | { 0x80b8, 0x3e }, |
| 471 | { 0x80b9, 0xf0 }, |
| 472 | { 0x80ba, 0x01 }, |
| 473 | { 0x80bb, 0x18 }, |
| 474 | { 0x80bc, 0x50 }, |
| 475 | { 0x80bd, 0x00 }, |
| 476 | { 0x80be, 0xea }, |
| 477 | { 0x80bf, 0xef }, |
| 478 | { 0x80c0, 0xfc }, |
| 479 | { 0x80c1, 0xbd }, |
| 480 | { 0x80c2, 0x1f }, |
| 481 | { 0x80c3, 0xfc }, |
| 482 | { 0x80c4, 0xdd }, |
| 483 | { 0x80c5, 0xaf }, |
| 484 | { 0x80c6, 0x00 }, |
| 485 | { 0x80c7, 0x38 }, |
| 486 | { 0x80c8, 0x30 }, |
| 487 | { 0x80c9, 0x05 }, |
| 488 | { 0x80ca, 0x4a }, |
| 489 | { 0x80cb, 0xd0 }, |
| 490 | { 0x80cc, 0x01 }, |
| 491 | { 0x80cd, 0xd9 }, |
| 492 | { 0x80ce, 0x6f }, |
| 493 | { 0x80cf, 0xf9 }, |
| 494 | { 0x80d0, 0x70 }, |
| 495 | { 0x80d1, 0xdf }, |
| 496 | { 0x80d2, 0xf7 }, |
| 497 | { 0x80d3, 0xc2 }, |
| 498 | { 0x80d4, 0xdf }, |
| 499 | { 0x80d5, 0x02 }, |
| 500 | { 0x80d6, 0x9a }, |
| 501 | { 0x80d7, 0xd0 }, |
| 502 | { 0x8250, 0x0d }, |
| 503 | { 0x8251, 0xcd }, |
| 504 | { 0x8252, 0xe0 }, |
| 505 | { 0x8253, 0x05 }, |
| 506 | { 0x8254, 0xa7 }, |
| 507 | { 0x8255, 0xff }, |
| 508 | { 0x8256, 0xed }, |
| 509 | { 0x8257, 0x5b }, |
| 510 | { 0x8258, 0xae }, |
| 511 | { 0x8259, 0xe6 }, |
| 512 | { 0x825a, 0x3d }, |
| 513 | { 0x825b, 0x0f }, |
| 514 | { 0x825c, 0x0d }, |
| 515 | { 0x825d, 0xea }, |
| 516 | { 0x825e, 0xf2 }, |
| 517 | { 0x825f, 0x51 }, |
| 518 | { 0x8260, 0xf5 }, |
| 519 | { 0x8261, 0x06 }, |
| 520 | { 0x821a, 0x00 }, |
| 521 | { 0x8546, 0x40 }, |
| 522 | { 0x8210, 0x26 }, |
| 523 | { 0x8211, 0xf6 }, |
| 524 | { 0x8212, 0x84 }, |
| 525 | { 0x8213, 0x02 }, |
| 526 | { 0x8502, 0x01 }, |
| 527 | { 0x8121, 0x04 }, |
| 528 | { 0x8122, 0x04 }, |
| 529 | { 0x852e, 0x10 }, |
| 530 | { 0x80a4, 0xca }, |
| 531 | { 0x80a7, 0x40 }, |
| 532 | { 0x8526, 0x01 }, |
| 533 | }; |
| 534 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 535 | static int au8522_enable_modulation(struct dvb_frontend *fe, |
| 536 | fe_modulation_t m) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 537 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 538 | struct au8522_state *state = fe->demodulator_priv; |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 539 | int i; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 540 | |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 541 | dprintk("%s(0x%08x)\n", __func__, m); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 542 | |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 543 | switch (m) { |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 544 | case VSB_8: |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 545 | dprintk("%s() VSB_8\n", __func__); |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 546 | for (i = 0; i < ARRAY_SIZE(VSB_mod_tab); i++) |
| 547 | au8522_writereg(state, |
| 548 | VSB_mod_tab[i].reg, |
| 549 | VSB_mod_tab[i].data); |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 550 | au8522_set_if(fe, state->config->vsb_if); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 551 | break; |
| 552 | case QAM_64: |
Frank Dischner | 040d4cb | 2009-06-14 23:05:20 -0300 | [diff] [blame] | 553 | dprintk("%s() QAM 64\n", __func__); |
| 554 | for (i = 0; i < ARRAY_SIZE(QAM64_mod_tab); i++) |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 555 | au8522_writereg(state, |
Frank Dischner | 040d4cb | 2009-06-14 23:05:20 -0300 | [diff] [blame] | 556 | QAM64_mod_tab[i].reg, |
| 557 | QAM64_mod_tab[i].data); |
| 558 | au8522_set_if(fe, state->config->qam_if); |
| 559 | break; |
| 560 | case QAM_256: |
| 561 | dprintk("%s() QAM 256\n", __func__); |
| 562 | for (i = 0; i < ARRAY_SIZE(QAM256_mod_tab); i++) |
| 563 | au8522_writereg(state, |
| 564 | QAM256_mod_tab[i].reg, |
| 565 | QAM256_mod_tab[i].data); |
Michael Krufky | 2e7acd7 | 2008-09-03 16:46:35 -0300 | [diff] [blame] | 566 | au8522_set_if(fe, state->config->qam_if); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 567 | break; |
| 568 | default: |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 569 | dprintk("%s() Invalid modulation\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 570 | return -EINVAL; |
| 571 | } |
| 572 | |
| 573 | state->current_modulation = m; |
| 574 | |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | /* Talk to the demod, set the FEC, GUARD, QAM settings etc */ |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 579 | static int au8522_set_frontend(struct dvb_frontend *fe, |
| 580 | struct dvb_frontend_parameters *p) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 581 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 582 | struct au8522_state *state = fe->demodulator_priv; |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 583 | int ret = -EINVAL; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 584 | |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 585 | dprintk("%s(frequency=%d)\n", __func__, p->frequency); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 586 | |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 587 | if ((state->current_frequency == p->frequency) && |
| 588 | (state->current_modulation == p->u.vsb.modulation)) |
| 589 | return 0; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 590 | |
| 591 | au8522_enable_modulation(fe, p->u.vsb.modulation); |
| 592 | |
| 593 | /* Allow the demod to settle */ |
| 594 | msleep(100); |
| 595 | |
| 596 | if (fe->ops.tuner_ops.set_params) { |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 597 | if (fe->ops.i2c_gate_ctrl) |
| 598 | fe->ops.i2c_gate_ctrl(fe, 1); |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 599 | ret = fe->ops.tuner_ops.set_params(fe, p); |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 600 | if (fe->ops.i2c_gate_ctrl) |
| 601 | fe->ops.i2c_gate_ctrl(fe, 0); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 602 | } |
| 603 | |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 604 | if (ret < 0) |
| 605 | return ret; |
| 606 | |
| 607 | state->current_frequency = p->frequency; |
| 608 | |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 609 | return 0; |
| 610 | } |
| 611 | |
| 612 | /* Reset the demod hardware and reset all of the configuration registers |
| 613 | to a default state. */ |
Devin Heitmueller | 0c44bf3 | 2009-03-11 02:59:56 -0300 | [diff] [blame] | 614 | int au8522_init(struct dvb_frontend *fe) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 615 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 616 | struct au8522_state *state = fe->demodulator_priv; |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 617 | dprintk("%s()\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 618 | |
Devin Heitmueller | 7f2c983 | 2010-02-17 22:47:55 -0300 | [diff] [blame] | 619 | state->operational_mode = AU8522_DIGITAL_MODE; |
| 620 | |
Devin Heitmueller | b628a2a | 2010-02-17 22:51:46 -0300 | [diff] [blame] | 621 | /* Clear out any state associated with the digital side of the |
| 622 | chip, so that when it gets powered back up it won't think |
| 623 | that it is already tuned */ |
| 624 | state->current_frequency = 0; |
| 625 | |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 626 | au8522_writereg(state, 0xa4, 1 << 5); |
| 627 | |
| 628 | au8522_i2c_gate_ctrl(fe, 1); |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 633 | static int au8522_led_gpio_enable(struct au8522_state *state, int onoff) |
| 634 | { |
| 635 | struct au8522_led_config *led_config = state->config->led_cfg; |
| 636 | u8 val; |
| 637 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame^] | 638 | /* bail out if we can't control an LED */ |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 639 | if (!led_config || !led_config->gpio_output || |
| 640 | !led_config->gpio_output_enable || !led_config->gpio_output_disable) |
| 641 | return 0; |
| 642 | |
| 643 | val = au8522_readreg(state, 0x4000 | |
| 644 | (led_config->gpio_output & ~0xc000)); |
| 645 | if (onoff) { |
| 646 | /* enable GPIO output */ |
| 647 | val &= ~((led_config->gpio_output_enable >> 8) & 0xff); |
| 648 | val |= (led_config->gpio_output_enable & 0xff); |
| 649 | } else { |
| 650 | /* disable GPIO output */ |
| 651 | val &= ~((led_config->gpio_output_disable >> 8) & 0xff); |
| 652 | val |= (led_config->gpio_output_disable & 0xff); |
| 653 | } |
| 654 | return au8522_writereg(state, 0x8000 | |
| 655 | (led_config->gpio_output & ~0xc000), val); |
| 656 | } |
| 657 | |
| 658 | /* led = 0 | off |
| 659 | * led = 1 | signal ok |
| 660 | * led = 2 | signal strong |
| 661 | * led < 0 | only light led if leds are currently off |
| 662 | */ |
| 663 | static int au8522_led_ctrl(struct au8522_state *state, int led) |
| 664 | { |
| 665 | struct au8522_led_config *led_config = state->config->led_cfg; |
| 666 | int i, ret = 0; |
| 667 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame^] | 668 | /* bail out if we can't control an LED */ |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 669 | if (!led_config || !led_config->gpio_leds || |
| 670 | !led_config->num_led_states || !led_config->led_states) |
| 671 | return 0; |
| 672 | |
| 673 | if (led < 0) { |
| 674 | /* if LED is already lit, then leave it as-is */ |
| 675 | if (state->led_state) |
| 676 | return 0; |
| 677 | else |
| 678 | led *= -1; |
| 679 | } |
| 680 | |
| 681 | /* toggle LED if changing state */ |
| 682 | if (state->led_state != led) { |
| 683 | u8 val; |
| 684 | |
| 685 | dprintk("%s: %d\n", __func__, led); |
| 686 | |
| 687 | au8522_led_gpio_enable(state, 1); |
| 688 | |
| 689 | val = au8522_readreg(state, 0x4000 | |
| 690 | (led_config->gpio_leds & ~0xc000)); |
| 691 | |
| 692 | /* start with all leds off */ |
| 693 | for (i = 0; i < led_config->num_led_states; i++) |
| 694 | val &= ~led_config->led_states[i]; |
| 695 | |
| 696 | /* set selected LED state */ |
| 697 | if (led < led_config->num_led_states) |
| 698 | val |= led_config->led_states[led]; |
| 699 | else if (led_config->num_led_states) |
| 700 | val |= |
| 701 | led_config->led_states[led_config->num_led_states - 1]; |
| 702 | |
| 703 | ret = au8522_writereg(state, 0x8000 | |
| 704 | (led_config->gpio_leds & ~0xc000), val); |
| 705 | if (ret < 0) |
| 706 | return ret; |
| 707 | |
| 708 | state->led_state = led; |
| 709 | |
| 710 | if (led == 0) |
| 711 | au8522_led_gpio_enable(state, 0); |
| 712 | } |
| 713 | |
| 714 | return 0; |
| 715 | } |
| 716 | |
Devin Heitmueller | 0c44bf3 | 2009-03-11 02:59:56 -0300 | [diff] [blame] | 717 | int au8522_sleep(struct dvb_frontend *fe) |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 718 | { |
| 719 | struct au8522_state *state = fe->demodulator_priv; |
| 720 | dprintk("%s()\n", __func__); |
| 721 | |
Devin Heitmueller | 7f2c983 | 2010-02-17 22:47:55 -0300 | [diff] [blame] | 722 | /* Only power down if the digital side is currently using the chip */ |
| 723 | if (state->operational_mode == AU8522_ANALOG_MODE) { |
| 724 | /* We're not in one of the expected power modes, which means |
| 725 | that the DVB thread is probably telling us to go to sleep |
| 726 | even though the analog frontend has already started using |
| 727 | the chip. So ignore the request */ |
| 728 | return 0; |
| 729 | } |
| 730 | |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 731 | /* turn off led */ |
| 732 | au8522_led_ctrl(state, 0); |
| 733 | |
Devin Heitmueller | 7bf63ed | 2009-03-11 03:00:34 -0300 | [diff] [blame] | 734 | /* Power down the chip */ |
| 735 | au8522_writereg(state, 0xa4, 1 << 5); |
| 736 | |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 737 | state->current_frequency = 0; |
| 738 | |
| 739 | return 0; |
| 740 | } |
| 741 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 742 | static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 743 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 744 | struct au8522_state *state = fe->demodulator_priv; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 745 | u8 reg; |
| 746 | u32 tuner_status = 0; |
| 747 | |
| 748 | *status = 0; |
| 749 | |
| 750 | if (state->current_modulation == VSB_8) { |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 751 | dprintk("%s() Checking VSB_8\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 752 | reg = au8522_readreg(state, 0x4088); |
Steven Toth | 836c285 | 2008-06-21 19:32:41 -0300 | [diff] [blame] | 753 | if ((reg & 0x03) == 0x03) |
| 754 | *status |= FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 755 | } else { |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 756 | dprintk("%s() Checking QAM\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 757 | reg = au8522_readreg(state, 0x4541); |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 758 | if (reg & 0x80) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 759 | *status |= FE_HAS_VITERBI; |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 760 | if (reg & 0x20) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 761 | *status |= FE_HAS_LOCK | FE_HAS_SYNC; |
| 762 | } |
| 763 | |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 764 | switch (state->config->status_mode) { |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 765 | case AU8522_DEMODLOCKING: |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 766 | dprintk("%s() DEMODLOCKING\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 767 | if (*status & FE_HAS_VITERBI) |
| 768 | *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; |
| 769 | break; |
| 770 | case AU8522_TUNERLOCKING: |
| 771 | /* Get the tuner status */ |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 772 | dprintk("%s() TUNERLOCKING\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 773 | if (fe->ops.tuner_ops.get_status) { |
| 774 | if (fe->ops.i2c_gate_ctrl) |
| 775 | fe->ops.i2c_gate_ctrl(fe, 1); |
| 776 | |
| 777 | fe->ops.tuner_ops.get_status(fe, &tuner_status); |
| 778 | |
| 779 | if (fe->ops.i2c_gate_ctrl) |
| 780 | fe->ops.i2c_gate_ctrl(fe, 0); |
| 781 | } |
| 782 | if (tuner_status) |
| 783 | *status |= FE_HAS_CARRIER | FE_HAS_SIGNAL; |
| 784 | break; |
| 785 | } |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 786 | state->fe_status = *status; |
| 787 | |
| 788 | if (*status & FE_HAS_LOCK) |
| 789 | /* turn on LED, if it isn't on already */ |
| 790 | au8522_led_ctrl(state, -1); |
| 791 | else |
| 792 | /* turn off LED */ |
| 793 | au8522_led_ctrl(state, 0); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 794 | |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 795 | dprintk("%s() status 0x%08x\n", __func__, *status); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 796 | |
| 797 | return 0; |
| 798 | } |
| 799 | |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 800 | static int au8522_led_status(struct au8522_state *state, const u16 *snr) |
| 801 | { |
| 802 | struct au8522_led_config *led_config = state->config->led_cfg; |
| 803 | int led; |
| 804 | u16 strong; |
| 805 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame^] | 806 | /* bail out if we can't control an LED */ |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 807 | if (!led_config) |
| 808 | return 0; |
| 809 | |
| 810 | if (0 == (state->fe_status & FE_HAS_LOCK)) |
| 811 | return au8522_led_ctrl(state, 0); |
| 812 | else if (state->current_modulation == QAM_256) |
| 813 | strong = led_config->qam256_strong; |
| 814 | else if (state->current_modulation == QAM_64) |
| 815 | strong = led_config->qam64_strong; |
| 816 | else /* (state->current_modulation == VSB_8) */ |
| 817 | strong = led_config->vsb8_strong; |
| 818 | |
| 819 | if (*snr >= strong) |
| 820 | led = 2; |
| 821 | else |
| 822 | led = 1; |
| 823 | |
| 824 | if ((state->led_state) && |
| 825 | (((strong < *snr) ? (*snr - strong) : (strong - *snr)) <= 10)) |
| 826 | /* snr didn't change enough to bother |
| 827 | * changing the color of the led */ |
| 828 | return 0; |
| 829 | |
| 830 | return au8522_led_ctrl(state, led); |
| 831 | } |
| 832 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 833 | static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 834 | { |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 835 | struct au8522_state *state = fe->demodulator_priv; |
| 836 | int ret = -EINVAL; |
| 837 | |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 838 | dprintk("%s()\n", __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 839 | |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 840 | if (state->current_modulation == QAM_256) |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 841 | ret = au8522_mse2snr_lookup(qam256_mse2snr_tab, |
| 842 | ARRAY_SIZE(qam256_mse2snr_tab), |
| 843 | au8522_readreg(state, 0x4522), |
| 844 | snr); |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 845 | else if (state->current_modulation == QAM_64) |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 846 | ret = au8522_mse2snr_lookup(qam64_mse2snr_tab, |
| 847 | ARRAY_SIZE(qam64_mse2snr_tab), |
| 848 | au8522_readreg(state, 0x4522), |
| 849 | snr); |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 850 | else /* VSB_8 */ |
Michael Krufky | 0daa5de | 2008-04-10 04:24:56 -0300 | [diff] [blame] | 851 | ret = au8522_mse2snr_lookup(vsb_mse2snr_tab, |
| 852 | ARRAY_SIZE(vsb_mse2snr_tab), |
| 853 | au8522_readreg(state, 0x4311), |
| 854 | snr); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 855 | |
Michael Krufky | adeeac3 | 2008-04-05 20:55:14 -0300 | [diff] [blame] | 856 | if (state->config->led_cfg) |
| 857 | au8522_led_status(state, snr); |
| 858 | |
Steven Toth | f01699b | 2008-04-10 02:01:48 -0300 | [diff] [blame] | 859 | return ret; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 860 | } |
| 861 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 862 | static int au8522_read_signal_strength(struct dvb_frontend *fe, |
| 863 | u16 *signal_strength) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 864 | { |
| 865 | return au8522_read_snr(fe, signal_strength); |
| 866 | } |
| 867 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 868 | static int au8522_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 869 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 870 | struct au8522_state *state = fe->demodulator_priv; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 871 | |
Michael Krufky | 8973dc4 | 2008-04-05 23:08:08 -0300 | [diff] [blame] | 872 | if (state->current_modulation == VSB_8) |
| 873 | *ucblocks = au8522_readreg(state, 0x4087); |
| 874 | else |
| 875 | *ucblocks = au8522_readreg(state, 0x4543); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 876 | |
| 877 | return 0; |
| 878 | } |
| 879 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 880 | static int au8522_read_ber(struct dvb_frontend *fe, u32 *ber) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 881 | { |
| 882 | return au8522_read_ucblocks(fe, ber); |
| 883 | } |
| 884 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 885 | static int au8522_get_frontend(struct dvb_frontend *fe, |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 886 | struct dvb_frontend_parameters *p) |
| 887 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 888 | struct au8522_state *state = fe->demodulator_priv; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 889 | |
| 890 | p->frequency = state->current_frequency; |
| 891 | p->u.vsb.modulation = state->current_modulation; |
| 892 | |
| 893 | return 0; |
| 894 | } |
| 895 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 896 | static int au8522_get_tune_settings(struct dvb_frontend *fe, |
| 897 | struct dvb_frontend_tune_settings *tune) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 898 | { |
| 899 | tune->min_delay_ms = 1000; |
| 900 | return 0; |
| 901 | } |
| 902 | |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 903 | static struct dvb_frontend_ops au8522_ops; |
| 904 | |
| 905 | int au8522_get_state(struct au8522_state **state, struct i2c_adapter *i2c, |
| 906 | u8 client_address) |
| 907 | { |
Devin Heitmueller | 4ff5ed4 | 2009-03-11 03:00:45 -0300 | [diff] [blame] | 908 | int ret; |
| 909 | |
| 910 | mutex_lock(&au8522_list_mutex); |
| 911 | ret = hybrid_tuner_request_state(struct au8522_state, (*state), |
| 912 | hybrid_tuner_instance_list, |
| 913 | i2c, client_address, "au8522"); |
| 914 | mutex_unlock(&au8522_list_mutex); |
| 915 | |
| 916 | return ret; |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | void au8522_release_state(struct au8522_state *state) |
| 920 | { |
Devin Heitmueller | 4ff5ed4 | 2009-03-11 03:00:45 -0300 | [diff] [blame] | 921 | mutex_lock(&au8522_list_mutex); |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 922 | if (state != NULL) |
| 923 | hybrid_tuner_release_state(state); |
Devin Heitmueller | 4ff5ed4 | 2009-03-11 03:00:45 -0300 | [diff] [blame] | 924 | mutex_unlock(&au8522_list_mutex); |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 925 | } |
| 926 | |
| 927 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 928 | static void au8522_release(struct dvb_frontend *fe) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 929 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 930 | struct au8522_state *state = fe->demodulator_priv; |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 931 | au8522_release_state(state); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 932 | } |
| 933 | |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 934 | struct dvb_frontend *au8522_attach(const struct au8522_config *config, |
| 935 | struct i2c_adapter *i2c) |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 936 | { |
Michael Krufky | e059b0f | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 937 | struct au8522_state *state = NULL; |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 938 | int instance; |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 939 | |
| 940 | /* allocate memory for the internal state */ |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 941 | instance = au8522_get_state(&state, i2c, config->demod_address); |
| 942 | switch (instance) { |
| 943 | case 0: |
| 944 | dprintk("%s state allocation failed\n", __func__); |
| 945 | break; |
| 946 | case 1: |
| 947 | /* new demod instance */ |
| 948 | dprintk("%s using new instance\n", __func__); |
| 949 | break; |
| 950 | default: |
| 951 | /* existing demod instance */ |
| 952 | dprintk("%s using existing instance\n", __func__); |
| 953 | break; |
| 954 | } |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 955 | |
| 956 | /* setup the state */ |
| 957 | state->config = config; |
| 958 | state->i2c = i2c; |
Devin Heitmueller | 7f2c983 | 2010-02-17 22:47:55 -0300 | [diff] [blame] | 959 | state->operational_mode = AU8522_DIGITAL_MODE; |
| 960 | |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 961 | /* create dvb_frontend */ |
| 962 | memcpy(&state->frontend.ops, &au8522_ops, |
| 963 | sizeof(struct dvb_frontend_ops)); |
| 964 | state->frontend.demodulator_priv = state; |
| 965 | |
| 966 | if (au8522_init(&state->frontend) != 0) { |
| 967 | printk(KERN_ERR "%s: Failed to initialize correctly\n", |
Michael Krufky | ce1719a | 2008-04-02 18:59:48 -0300 | [diff] [blame] | 968 | __func__); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 969 | goto error; |
| 970 | } |
| 971 | |
| 972 | /* Note: Leaving the I2C gate open here. */ |
| 973 | au8522_i2c_gate_ctrl(&state->frontend, 1); |
| 974 | |
| 975 | return &state->frontend; |
| 976 | |
| 977 | error: |
Devin Heitmueller | 209fdf6 | 2009-03-11 03:00:36 -0300 | [diff] [blame] | 978 | au8522_release_state(state); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 979 | return NULL; |
| 980 | } |
Mauro Carvalho Chehab | 18d73c5 | 2008-04-18 22:12:52 -0300 | [diff] [blame] | 981 | EXPORT_SYMBOL(au8522_attach); |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 982 | |
| 983 | static struct dvb_frontend_ops au8522_ops = { |
| 984 | |
| 985 | .info = { |
| 986 | .name = "Auvitek AU8522 QAM/8VSB Frontend", |
| 987 | .type = FE_ATSC, |
| 988 | .frequency_min = 54000000, |
| 989 | .frequency_max = 858000000, |
| 990 | .frequency_stepsize = 62500, |
| 991 | .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB |
| 992 | }, |
| 993 | |
| 994 | .init = au8522_init, |
Michael Krufky | 74d5072 | 2008-06-13 20:33:23 -0300 | [diff] [blame] | 995 | .sleep = au8522_sleep, |
Steven Toth | 265a651 | 2008-04-18 21:34:00 -0300 | [diff] [blame] | 996 | .i2c_gate_ctrl = au8522_i2c_gate_ctrl, |
| 997 | .set_frontend = au8522_set_frontend, |
| 998 | .get_frontend = au8522_get_frontend, |
| 999 | .get_tune_settings = au8522_get_tune_settings, |
| 1000 | .read_status = au8522_read_status, |
| 1001 | .read_ber = au8522_read_ber, |
| 1002 | .read_signal_strength = au8522_read_signal_strength, |
| 1003 | .read_snr = au8522_read_snr, |
| 1004 | .read_ucblocks = au8522_read_ucblocks, |
| 1005 | .release = au8522_release, |
| 1006 | }; |
| 1007 | |
| 1008 | module_param(debug, int, 0644); |
| 1009 | MODULE_PARM_DESC(debug, "Enable verbose debug messages"); |
| 1010 | |
| 1011 | MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver"); |
| 1012 | MODULE_AUTHOR("Steven Toth"); |
| 1013 | MODULE_LICENSE("GPL"); |