| 1 | /* $NetBSD: xc3028.c,v 1.7 2015/03/07 14:16:51 jmcneill Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 17 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 18 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 19 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 26 | * POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | /* |
| 30 | * Xceive XC3028L |
| 31 | */ |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: xc3028.c,v 1.7 2015/03/07 14:16:51 jmcneill Exp $" ); |
| 35 | |
| 36 | #include <sys/param.h> |
| 37 | #include <sys/systm.h> |
| 38 | #include <sys/device.h> |
| 39 | #include <sys/conf.h> |
| 40 | #include <sys/bus.h> |
| 41 | #include <sys/kmem.h> |
| 42 | #include <sys/mutex.h> |
| 43 | #include <sys/module.h> |
| 44 | |
| 45 | #include <dev/firmload.h> |
| 46 | #include <dev/i2c/i2cvar.h> |
| 47 | |
| 48 | #include <dev/i2c/xc3028reg.h> |
| 49 | #include <dev/i2c/xc3028var.h> |
| 50 | |
| 51 | #define XC3028_FIRMWARE_DRVNAME "xc3028" |
| 52 | |
| 53 | #define XC3028_FREQ_MIN 1000000 |
| 54 | #define XC3028_FREQ_MAX 1023000000 |
| 55 | |
| 56 | #define XC3028_FW_BASE (1 << 0) |
| 57 | #define XC3028_FW_D2633 (1 << 4) |
| 58 | #define XC3028_FW_DTV6 (1 << 5) |
| 59 | #define XC3028_FW_QAM (1 << 6) |
| 60 | #define XC3028_FW_ATSC (1 << 16) |
| 61 | #define XC3028_FW_LG60 (1 << 18) |
| 62 | #define XC3028_FW_F6MHZ (1 << 27) |
| 63 | #define XC3028_FW_SCODE (1 << 29) |
| 64 | #define XC3028_FW_HAS_IF (1 << 30) |
| 65 | |
| 66 | #define XC3028_FW_DEFAULT (XC3028_FW_ATSC|XC3028_FW_D2633|XC3028_FW_DTV6) |
| 67 | |
| 68 | static kmutex_t xc3028_firmware_lock; |
| 69 | |
| 70 | static int xc3028_reset(struct xc3028 *); |
| 71 | static int xc3028_read_2(struct xc3028 *, uint16_t, uint16_t *); |
| 72 | static int xc3028_write_buffer(struct xc3028 *, const uint8_t *, size_t); |
| 73 | static int xc3028_firmware_open(struct xc3028 *); |
| 74 | static int xc3028_firmware_parse(struct xc3028 *, const uint8_t *, size_t); |
| 75 | static int xc3028_firmware_upload(struct xc3028 *, struct xc3028_fw *); |
| 76 | static int xc3028_scode_upload(struct xc3028 *, struct xc3028_fw *); |
| 77 | static void xc3028_dump_fw(struct xc3028 *, struct xc3028_fw *, |
| 78 | const char *); |
| 79 | |
| 80 | static const char * |
| 81 | xc3028_name(struct xc3028 *xc) |
| 82 | { |
| 83 | if (xc->type == XC3028L) |
| 84 | return "xc3028l" ; |
| 85 | else |
| 86 | return "xc3028" ; |
| 87 | } |
| 88 | |
| 89 | static const char * |
| 90 | xc3028_firmware_name(struct xc3028 *xc) |
| 91 | { |
| 92 | if (xc->type == XC3028L) |
| 93 | return "xc3028L-v36.fw" ; |
| 94 | else |
| 95 | return "xc3028-v27.fw" ; |
| 96 | } |
| 97 | |
| 98 | static int |
| 99 | xc3028_reset(struct xc3028 *xc) |
| 100 | { |
| 101 | int error = 0; |
| 102 | |
| 103 | if (xc->reset) |
| 104 | error = xc->reset(xc->reset_priv); |
| 105 | |
| 106 | return error; |
| 107 | } |
| 108 | |
| 109 | static struct xc3028_fw * |
| 110 | xc3028_get_basefw(struct xc3028 *xc) |
| 111 | { |
| 112 | struct xc3028_fw *fw; |
| 113 | unsigned int i; |
| 114 | |
| 115 | for (i = 0; i < xc->nfw; i++) { |
| 116 | fw = &xc->fw[i]; |
| 117 | if (fw->type == XC3028_FW_BASE) |
| 118 | return fw; |
| 119 | } |
| 120 | |
| 121 | return NULL; |
| 122 | } |
| 123 | |
| 124 | static struct xc3028_fw * |
| 125 | xc3028_get_stdfw(struct xc3028 *xc) |
| 126 | { |
| 127 | struct xc3028_fw *fw; |
| 128 | unsigned int i; |
| 129 | |
| 130 | for (i = 0; i < xc->nfw; i++) { |
| 131 | fw = &xc->fw[i]; |
| 132 | if (fw->type == (XC3028_FW_D2633|XC3028_FW_DTV6|XC3028_FW_ATSC)) |
| 133 | return fw; |
| 134 | } |
| 135 | |
| 136 | return NULL; |
| 137 | } |
| 138 | |
| 139 | static struct xc3028_fw * |
| 140 | xc3028_get_scode(struct xc3028 *xc) |
| 141 | { |
| 142 | struct xc3028_fw *fw; |
| 143 | unsigned int i; |
| 144 | |
| 145 | for (i = 0; i < xc->nfw; i++) { |
| 146 | fw = &xc->fw[i]; |
| 147 | if (fw->type == |
| 148 | (XC3028_FW_DTV6|XC3028_FW_QAM|XC3028_FW_ATSC|XC3028_FW_LG60| |
| 149 | XC3028_FW_F6MHZ|XC3028_FW_SCODE|XC3028_FW_HAS_IF) && |
| 150 | fw->int_freq == 6200) |
| 151 | return fw; |
| 152 | } |
| 153 | |
| 154 | return NULL; |
| 155 | } |
| 156 | |
| 157 | static int |
| 158 | xc3028_firmware_open(struct xc3028 *xc) |
| 159 | { |
| 160 | firmware_handle_t fwh; |
| 161 | struct xc3028_fw *basefw, *stdfw, *scode; |
| 162 | uint8_t *fw = NULL; |
| 163 | uint16_t xcversion = 0; |
| 164 | size_t fwlen; |
| 165 | int error; |
| 166 | |
| 167 | mutex_enter(&xc3028_firmware_lock); |
| 168 | |
| 169 | error = firmware_open(XC3028_FIRMWARE_DRVNAME, |
| 170 | xc3028_firmware_name(xc), &fwh); |
| 171 | if (error) |
| 172 | goto done; |
| 173 | fwlen = firmware_get_size(fwh); |
| 174 | fw = firmware_malloc(fwlen); |
| 175 | if (fw == NULL) { |
| 176 | firmware_close(fwh); |
| 177 | error = ENOMEM; |
| 178 | goto done; |
| 179 | } |
| 180 | error = firmware_read(fwh, 0, fw, fwlen); |
| 181 | firmware_close(fwh); |
| 182 | if (error) |
| 183 | goto done; |
| 184 | |
| 185 | device_printf(xc->parent, "%s: loading firmware '%s/%s'\n" , |
| 186 | xc3028_name(xc), XC3028_FIRMWARE_DRVNAME, xc3028_firmware_name(xc)); |
| 187 | error = xc3028_firmware_parse(xc, fw, fwlen); |
| 188 | if (!error) { |
| 189 | basefw = xc3028_get_basefw(xc); |
| 190 | stdfw = xc3028_get_stdfw(xc); |
| 191 | scode = xc3028_get_scode(xc); |
| 192 | if (basefw && stdfw) { |
| 193 | xc3028_reset(xc); |
| 194 | xc3028_dump_fw(xc, basefw, "base" ); |
| 195 | error = xc3028_firmware_upload(xc, basefw); |
| 196 | if (error) |
| 197 | return error; |
| 198 | xc3028_dump_fw(xc, stdfw, "std" ); |
| 199 | error = xc3028_firmware_upload(xc, stdfw); |
| 200 | if (error) |
| 201 | return error; |
| 202 | if (scode) { |
| 203 | xc3028_dump_fw(xc, scode, "scode" ); |
| 204 | error = xc3028_scode_upload(xc, scode); |
| 205 | if (error) |
| 206 | return error; |
| 207 | } |
| 208 | } else |
| 209 | error = ENODEV; |
| 210 | } |
| 211 | if (!error) { |
| 212 | xc3028_read_2(xc, XC3028_REG_VERSION, &xcversion); |
| 213 | |
| 214 | device_printf(xc->parent, "%s: hw %d.%d, fw %d.%d\n" , |
| 215 | xc3028_name(xc), |
| 216 | (xcversion >> 12) & 0xf, (xcversion >> 8) & 0xf, |
| 217 | (xcversion >> 4) & 0xf, (xcversion >> 0) & 0xf); |
| 218 | } |
| 219 | |
| 220 | done: |
| 221 | if (fw) |
| 222 | firmware_free(fw, fwlen); |
| 223 | mutex_exit(&xc3028_firmware_lock); |
| 224 | |
| 225 | if (error) |
| 226 | aprint_error_dev(xc->parent, |
| 227 | "%s: couldn't open firmware '%s/%s' (error=%d)\n" , |
| 228 | xc3028_name(xc), XC3028_FIRMWARE_DRVNAME, |
| 229 | xc3028_firmware_name(xc), error); |
| 230 | |
| 231 | return error; |
| 232 | } |
| 233 | |
| 234 | static const char *xc3028_fw_types[] = { |
| 235 | "BASE" , |
| 236 | "F8MHZ" , |
| 237 | "MTS" , |
| 238 | "D2620" , |
| 239 | "D2633" , |
| 240 | "DTV6" , |
| 241 | "QAM" , |
| 242 | "DTV7" , |
| 243 | "DTV78" , |
| 244 | "DTV8" , |
| 245 | "FM" , |
| 246 | "INPUT1" , |
| 247 | "LCD" , |
| 248 | "NOGD" , |
| 249 | "INIT1" , |
| 250 | "MONO" , |
| 251 | "ATSC" , |
| 252 | "IF" , |
| 253 | "LG60" , |
| 254 | "ATI638" , |
| 255 | "OREN538" , |
| 256 | "OREN36" , |
| 257 | "TOYOTA388" , |
| 258 | "TOYOTA794" , |
| 259 | "DIBCOM52" , |
| 260 | "ZARLINK456" , |
| 261 | "CHINA" , |
| 262 | "F6MHZ" , |
| 263 | "INPUT2" , |
| 264 | "SCODE" , |
| 265 | "HAS_IF" , |
| 266 | }; |
| 267 | |
| 268 | static void |
| 269 | xc3028_dump_fw(struct xc3028 *xc, struct xc3028_fw *xcfw, const char *type) |
| 270 | { |
| 271 | unsigned int i; |
| 272 | |
| 273 | device_printf(xc->parent, "%s: %s:" , xc3028_name(xc), type); |
| 274 | if (xcfw == NULL) { |
| 275 | printf(" <none>\n" ); |
| 276 | return; |
| 277 | } |
| 278 | for (i = 0; i < __arraycount(xc3028_fw_types); i++) { |
| 279 | if (xcfw->type & (1 << i)) |
| 280 | printf(" %s" , xc3028_fw_types[i]); |
| 281 | } |
| 282 | if (xcfw->type & (1 << 30)) |
| 283 | printf("_%d" , xcfw->int_freq); |
| 284 | if (xcfw->id) |
| 285 | printf(" id=%" PRIx64, xcfw->id); |
| 286 | printf(" size=%u\n" , xcfw->data_size); |
| 287 | } |
| 288 | |
| 289 | static int |
| 290 | xc3028_firmware_parse(struct xc3028 *xc, const uint8_t *fw, size_t fwlen) |
| 291 | { |
| 292 | const uint8_t *p = fw, *endp = p + fwlen; |
| 293 | char fwname[32 + 1]; |
| 294 | uint16_t fwver, narr; |
| 295 | unsigned int index; |
| 296 | struct xc3028_fw *xcfw; |
| 297 | |
| 298 | if (fwlen < 36) |
| 299 | return EINVAL; |
| 300 | |
| 301 | /* first 32 bytes are the firmware name string */ |
| 302 | memset(fwname, 0, sizeof(fwname)); |
| 303 | memcpy(fwname, p, sizeof(fwname) - 1); |
| 304 | p += (sizeof(fwname) - 1); |
| 305 | |
| 306 | fwver = le16dec(p); |
| 307 | p += sizeof(fwver); |
| 308 | narr = le16dec(p); |
| 309 | p += sizeof(narr); |
| 310 | |
| 311 | aprint_debug_dev(xc->parent, "%s: fw type %s, ver %d.%d, %d images\n" , |
| 312 | xc3028_name(xc), fwname, fwver >> 8, fwver & 0xff, narr); |
| 313 | |
| 314 | xc->fw = kmem_zalloc(sizeof(*xc->fw) * narr, KM_SLEEP); |
| 315 | if (xc->fw == NULL) |
| 316 | return ENOMEM; |
| 317 | xc->nfw = narr; |
| 318 | |
| 319 | for (index = 0; index < xc->nfw && p < endp; index++) { |
| 320 | xcfw = &xc->fw[index]; |
| 321 | |
| 322 | if (endp - p < 16) |
| 323 | goto corrupt; |
| 324 | |
| 325 | xcfw->type = le32dec(p); |
| 326 | p += sizeof(xcfw->type); |
| 327 | |
| 328 | xcfw->id = le64dec(p); |
| 329 | p += sizeof(xcfw->id); |
| 330 | |
| 331 | if (xcfw->type & XC3028_FW_HAS_IF) { |
| 332 | xcfw->int_freq = le16dec(p); |
| 333 | p += sizeof(xcfw->int_freq); |
| 334 | if ((uint32_t)(endp - p) < sizeof(xcfw->data_size)) |
| 335 | goto corrupt; |
| 336 | } |
| 337 | |
| 338 | xcfw->data_size = le32dec(p); |
| 339 | p += sizeof(xcfw->data_size); |
| 340 | |
| 341 | if (xcfw->data_size == 0 || |
| 342 | xcfw->data_size > (uint32_t)(endp - p)) |
| 343 | goto corrupt; |
| 344 | xcfw->data = kmem_alloc(xcfw->data_size, KM_SLEEP); |
| 345 | if (xcfw->data == NULL) |
| 346 | goto corrupt; |
| 347 | memcpy(xcfw->data, p, xcfw->data_size); |
| 348 | p += xcfw->data_size; |
| 349 | } |
| 350 | |
| 351 | return 0; |
| 352 | |
| 353 | corrupt: |
| 354 | aprint_error_dev(xc->parent, "%s: fw image corrupt\n" , xc3028_name(xc)); |
| 355 | for (index = 0; index < xc->nfw; index++) { |
| 356 | if (xc->fw[index].data) |
| 357 | kmem_free(xc->fw[index].data, xc->fw[index].data_size); |
| 358 | } |
| 359 | kmem_free(xc->fw, sizeof(*xc->fw) * xc->nfw); |
| 360 | xc->nfw = 0; |
| 361 | |
| 362 | return ENXIO; |
| 363 | } |
| 364 | |
| 365 | static int |
| 366 | xc3028_firmware_upload(struct xc3028 *xc, struct xc3028_fw *xcfw) |
| 367 | { |
| 368 | const uint8_t *fw = xcfw->data, *p; |
| 369 | uint32_t fwlen = xcfw->data_size; |
| 370 | uint8_t cmd[64]; |
| 371 | unsigned int i; |
| 372 | uint16_t len, rem; |
| 373 | size_t wrlen; |
| 374 | int error; |
| 375 | |
| 376 | for (i = 0; i < fwlen - 2;) { |
| 377 | len = le16dec(&fw[i]); |
| 378 | i += 2; |
| 379 | if (len == 0xffff) |
| 380 | break; |
| 381 | |
| 382 | /* reset command */ |
| 383 | if (len == 0x0000) { |
| 384 | error = xc3028_reset(xc); |
| 385 | if (error) |
| 386 | return error; |
| 387 | continue; |
| 388 | } |
| 389 | /* reset clk command */ |
| 390 | if (len == 0xff00) { |
| 391 | continue; |
| 392 | } |
| 393 | /* delay command */ |
| 394 | if (len & 0x8000) { |
| 395 | delay((len & 0x7fff) * 1000); |
| 396 | continue; |
| 397 | } |
| 398 | |
| 399 | if (i + len > fwlen) { |
| 400 | printf("weird len, i=%u len=%u fwlen=%u'\n" , i, len, fwlen); |
| 401 | return EINVAL; |
| 402 | } |
| 403 | |
| 404 | cmd[0] = fw[i]; |
| 405 | p = &fw[i + 1]; |
| 406 | rem = len - 1; |
| 407 | while (rem > 0) { |
| 408 | wrlen = min(rem, __arraycount(cmd) - 1); |
| 409 | memcpy(&cmd[1], p, wrlen); |
| 410 | error = xc3028_write_buffer(xc, cmd, wrlen + 1); |
| 411 | if (error) |
| 412 | return error; |
| 413 | p += wrlen; |
| 414 | rem -= wrlen; |
| 415 | } |
| 416 | i += len; |
| 417 | } |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static int |
| 423 | xc3028_scode_upload(struct xc3028 *xc, struct xc3028_fw *xcfw) |
| 424 | { |
| 425 | static uint8_t scode_init[] = { 0xa0, 0x00, 0x00, 0x00 }; |
| 426 | static uint8_t scode_fini[] = { 0x00, 0x8c }; |
| 427 | int error; |
| 428 | |
| 429 | if (xcfw->data_size < 12) |
| 430 | return EINVAL; |
| 431 | error = xc3028_write_buffer(xc, scode_init, sizeof(scode_init)); |
| 432 | if (error) |
| 433 | return error; |
| 434 | error = xc3028_write_buffer(xc, xcfw->data, 12); |
| 435 | if (error) |
| 436 | return error; |
| 437 | error = xc3028_write_buffer(xc, scode_fini, sizeof(scode_fini)); |
| 438 | if (error) |
| 439 | return error; |
| 440 | |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | static int |
| 445 | xc3028_read_2(struct xc3028 *xc, uint16_t reg, uint16_t *val) |
| 446 | { |
| 447 | uint8_t cmd[2], resp[2]; |
| 448 | int error; |
| 449 | |
| 450 | cmd[0] = reg >> 8; |
| 451 | cmd[1] = reg & 0xff; |
| 452 | error = iic_exec(xc->i2c, I2C_OP_WRITE, xc->i2c_addr, |
| 453 | cmd, sizeof(cmd), NULL, 0, 0); |
| 454 | if (error) |
| 455 | return error; |
| 456 | resp[0] = resp[1] = 0; |
| 457 | error = iic_exec(xc->i2c, I2C_OP_READ, xc->i2c_addr, |
| 458 | NULL, 0, resp, sizeof(resp), 0); |
| 459 | if (error) |
| 460 | return error; |
| 461 | |
| 462 | *val = (resp[0] << 8) | resp[1]; |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | static int |
| 468 | xc3028_write_buffer(struct xc3028 *xc, const uint8_t *data, size_t datalen) |
| 469 | { |
| 470 | return iic_exec(xc->i2c, I2C_OP_WRITE_WITH_STOP, xc->i2c_addr, |
| 471 | data, datalen, NULL, 0, 0); |
| 472 | } |
| 473 | |
| 474 | #if notyet |
| 475 | static int |
| 476 | xc3028_write_2(struct xc3028 *xc, uint16_t reg, uint16_t val) |
| 477 | { |
| 478 | uint8_t data[4]; |
| 479 | |
| 480 | data[0] = reg >> 8; |
| 481 | data[1] = reg & 0xff; |
| 482 | data[2] = val >> 8; |
| 483 | data[3] = val & 0xff; |
| 484 | |
| 485 | return xc3028_write_buffer(xc, data, sizeof(data)); |
| 486 | } |
| 487 | #endif |
| 488 | |
| 489 | struct xc3028 * |
| 490 | xc3028_open(device_t parent, i2c_tag_t i2c, i2c_addr_t addr, |
| 491 | xc3028_reset_cb reset, void *reset_priv, enum xc3028_type type) |
| 492 | { |
| 493 | struct xc3028 *xc; |
| 494 | |
| 495 | xc = kmem_alloc(sizeof(*xc), KM_SLEEP); |
| 496 | if (xc == NULL) |
| 497 | return NULL; |
| 498 | xc->parent = parent; |
| 499 | xc->i2c = i2c; |
| 500 | xc->i2c_addr = addr; |
| 501 | xc->reset = reset; |
| 502 | xc->reset_priv = reset_priv; |
| 503 | xc->type = type; |
| 504 | |
| 505 | if (xc3028_firmware_open(xc)) { |
| 506 | aprint_error_dev(parent, "%s: fw open failed\n" , |
| 507 | xc3028_name(xc)); |
| 508 | goto failed; |
| 509 | } |
| 510 | |
| 511 | return xc; |
| 512 | |
| 513 | failed: |
| 514 | kmem_free(xc, sizeof(*xc)); |
| 515 | return NULL; |
| 516 | } |
| 517 | |
| 518 | void |
| 519 | xc3028_close(struct xc3028 *xc) |
| 520 | { |
| 521 | unsigned int index; |
| 522 | |
| 523 | if (xc->fw) { |
| 524 | for (index = 0; index < xc->nfw; index++) { |
| 525 | if (xc->fw[index].data) |
| 526 | kmem_free(xc->fw[index].data, |
| 527 | xc->fw[index].data_size); |
| 528 | } |
| 529 | kmem_free(xc->fw, sizeof(*xc->fw) * xc->nfw); |
| 530 | } |
| 531 | kmem_free(xc, sizeof(*xc)); |
| 532 | } |
| 533 | |
| 534 | int |
| 535 | xc3028_tune_dtv(struct xc3028 *xc, const struct dvb_frontend_parameters *params) |
| 536 | { |
| 537 | static uint8_t freq_init[] = { 0x80, 0x02, 0x00, 0x00 }; |
| 538 | uint8_t freq_buf[4]; |
| 539 | uint32_t div, offset = 0; |
| 540 | int error; |
| 541 | |
| 542 | if (params->u.vsb.modulation == VSB_8) { |
| 543 | offset = 1750000; |
| 544 | } else { |
| 545 | return EINVAL; |
| 546 | } |
| 547 | |
| 548 | div = (params->frequency - offset + 15625 / 2) / 15625; |
| 549 | |
| 550 | error = xc3028_write_buffer(xc, freq_init, sizeof(freq_init)); |
| 551 | if (error) |
| 552 | return error; |
| 553 | delay(10000); |
| 554 | |
| 555 | freq_buf[0] = (div >> 24) & 0xff; |
| 556 | freq_buf[1] = (div >> 16) & 0xff; |
| 557 | freq_buf[2] = (div >> 8) & 0xff; |
| 558 | freq_buf[3] = (div >> 0) & 0xff; |
| 559 | error = xc3028_write_buffer(xc, freq_buf, sizeof(freq_buf)); |
| 560 | if (error) |
| 561 | return error; |
| 562 | delay(100000); |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | MODULE(MODULE_CLASS_DRIVER, xc3028, "i2cexec" ); |
| 568 | |
| 569 | static int |
| 570 | xc3028_modcmd(modcmd_t cmd, void *opaque) |
| 571 | { |
| 572 | switch (cmd) { |
| 573 | case MODULE_CMD_INIT: |
| 574 | mutex_init(&xc3028_firmware_lock, MUTEX_DEFAULT, IPL_NONE); |
| 575 | return 0; |
| 576 | case MODULE_CMD_FINI: |
| 577 | mutex_destroy(&xc3028_firmware_lock); |
| 578 | return 0; |
| 579 | default: |
| 580 | return ENOTTY; |
| 581 | } |
| 582 | } |
| 583 | |