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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 | // SPDX-License-Identifier: GPL-2.0-only /* * FM Driver for Connectivity chip of Texas Instruments. * This sub-module of FM driver implements FM TX functionality. * * Copyright (C) 2011 Texas Instruments */ #include <linux/delay.h> #include "fmdrv.h" #include "fmdrv_common.h" #include "fmdrv_tx.h" int fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode) { u16 payload; int ret; if (fmdev->tx_data.aud_mode == mode) return 0; fmdbg("stereo mode: %d\n", mode); /* Set Stereo/Mono mode */ payload = (1 - mode); ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; fmdev->tx_data.aud_mode = mode; return ret; } static int set_rds_text(struct fmdev *fmdev, u8 *rds_text) { u16 payload; int ret; ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text, strlen(rds_text), NULL, NULL); if (ret < 0) return ret; /* Scroll mode */ payload = (u16)0x1; ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; return 0; } static int set_rds_data_mode(struct fmdev *fmdev, u8 mode) { u16 payload; int ret; /* Setting unique PI TODO: how unique? */ payload = (u16)0xcafe; ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* Set decoder id */ payload = (u16)0xa; ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* TODO: RDS_MODE_GET? */ return 0; } static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len) { u16 payload; int ret; len |= type << 8; payload = len; ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* TODO: LENGTH_GET? */ return 0; } int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) { u16 payload; int ret; u8 rds_text[] = "Zoom2\n"; fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis, FM_RDS_ENABLE, FM_RDS_DISABLE); if (rds_en_dis == FM_RDS_ENABLE) { /* Set RDS length */ set_rds_len(fmdev, 0, strlen(rds_text)); /* Set RDS text */ set_rds_text(fmdev, rds_text); /* Set RDS mode */ set_rds_data_mode(fmdev, 0x0); } /* Send command to enable RDS */ if (rds_en_dis == FM_RDS_ENABLE) payload = 0x01; else payload = 0x00; ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; if (rds_en_dis == FM_RDS_ENABLE) { /* Set RDS length */ set_rds_len(fmdev, 0, strlen(rds_text)); /* Set RDS text */ set_rds_text(fmdev, rds_text); } fmdev->tx_data.rds.flag = rds_en_dis; return 0; } int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type) { u16 payload; int ret; if (fmdev->curr_fmmode != FM_MODE_TX) return -EPERM; fm_tx_set_rds_mode(fmdev, 0); /* Set RDS length */ set_rds_len(fmdev, rds_type, strlen(rds_text)); /* Set RDS text */ set_rds_text(fmdev, rds_text); /* Set RDS mode */ set_rds_data_mode(fmdev, 0x0); payload = 1; ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; return 0; } int fm_tx_set_af(struct fmdev *fmdev, u32 af) { u16 payload; int ret; if (fmdev->curr_fmmode != FM_MODE_TX) return -EPERM; fmdbg("AF: %d\n", af); af = (af - 87500) / 100; payload = (u16)af; ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; return 0; } int fm_tx_set_region(struct fmdev *fmdev, u8 region) { u16 payload; int ret; if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) { fmerr("Invalid band\n"); return -EINVAL; } /* Send command to set the band */ payload = (u16)region; ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; return 0; } int fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) { u16 payload; int ret; fmdbg("tx: mute mode %d\n", mute_mode_toset); payload = mute_mode_toset; ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; return 0; } /* Set TX Audio I/O */ static int set_audio_io(struct fmdev *fmdev) { struct fmtx_data *tx = &fmdev->tx_data; u16 payload; int ret; /* Set Audio I/O Enable */ payload = tx->audio_io; ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* TODO: is audio set? */ return 0; } /* Start TX Transmission */ static int enable_xmit(struct fmdev *fmdev, u8 new_xmit_state) { struct fmtx_data *tx = &fmdev->tx_data; unsigned long timeleft; u16 payload; int ret; /* Enable POWER_ENB interrupts */ payload = FM_POW_ENB_EVENT; ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* Set Power Enable */ payload = new_xmit_state; ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* Wait for Power Enabled */ init_completion(&fmdev->maintask_comp); timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, FM_DRV_TX_TIMEOUT); if (!timeleft) { fmerr("Timeout(%d sec),didn't get tune ended interrupt\n", jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); return -ETIMEDOUT; } set_bit(FM_CORE_TX_XMITING, &fmdev->flag); tx->xmit_state = new_xmit_state; return 0; } /* Set TX power level */ int fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl) { u16 payload; struct fmtx_data *tx = &fmdev->tx_data; int ret; if (fmdev->curr_fmmode != FM_MODE_TX) return -EPERM; fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl); /* If the core isn't ready update global variable */ if (!test_bit(FM_CORE_READY, &fmdev->flag)) { tx->pwr_lvl = new_pwr_lvl; return 0; } /* Set power level: Application will specify power level value in * units of dB/uV, whereas range and step are specific to FM chip. * For TI's WL chips, convert application specified power level value * to chip specific value by subtracting 122 from it. Refer to TI FM * data sheet for details. * */ payload = (FM_PWR_LVL_HIGH - new_pwr_lvl); ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; /* TODO: is the power level set? */ tx->pwr_lvl = new_pwr_lvl; return 0; } /* * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us) * Convert V4L2 specified filter values to chip specific filter values. */ int fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis) { struct fmtx_data *tx = &fmdev->tx_data; u16 payload; int ret; if (fmdev->curr_fmmode != FM_MODE_TX) return -EPERM; switch (preemphasis) { case V4L2_PREEMPHASIS_DISABLED: payload = FM_TX_PREEMPH_OFF; break; case V4L2_PREEMPHASIS_50_uS: payload = FM_TX_PREEMPH_50US; break; case V4L2_PREEMPHASIS_75_uS: payload = FM_TX_PREEMPH_75US; break; } ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; tx->preemph = payload; return ret; } /* Get the TX tuning capacitor value.*/ int fm_tx_get_tune_cap_val(struct fmdev *fmdev) { u16 curr_val; u32 resp_len; int ret; if (fmdev->curr_fmmode != FM_MODE_TX) return -EPERM; ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD, NULL, sizeof(curr_val), &curr_val, &resp_len); if (ret < 0) return ret; curr_val = be16_to_cpu((__force __be16)curr_val); return curr_val; } /* Set TX Frequency */ int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set) { struct fmtx_data *tx = &fmdev->tx_data; u16 payload, chanl_index; int ret; if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) { enable_xmit(fmdev, 0); clear_bit(FM_CORE_TX_XMITING, &fmdev->flag); } /* Enable FR, BL interrupts */ payload = (FM_FR_EVENT | FM_BL_EVENT); ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; tx->tx_frq = (unsigned long)freq_to_set; fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq); chanl_index = freq_to_set / 10; /* Set current tuner channel */ payload = chanl_index; ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload, sizeof(payload), NULL, NULL); if (ret < 0) return ret; fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl); fm_tx_set_preemph_filter(fmdev, tx->preemph); tx->audio_io = 0x01; /* I2S */ set_audio_io(fmdev); enable_xmit(fmdev, 0x01); /* Enable transmission */ tx->aud_mode = FM_STEREO_MODE; tx->rds.flag = FM_RDS_DISABLE; return 0; } |