| 1 | /* $NetBSD: emdtv_dtv.c,v 1.12 2016/04/23 10:15:31 skrll Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2008, 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 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: emdtv_dtv.c,v 1.12 2016/04/23 10:15:31 skrll Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/device.h> |
| 35 | #include <sys/lwp.h> |
| 36 | #include <sys/conf.h> |
| 37 | |
| 38 | #include <dev/usb/usb.h> |
| 39 | #include <dev/usb/usbdi.h> |
| 40 | #include <dev/usb/usbdi_util.h> |
| 41 | #include <dev/usb/usbdivar.h> |
| 42 | #include <dev/usb/usbdevs.h> |
| 43 | |
| 44 | #include <dev/i2c/i2cvar.h> |
| 45 | |
| 46 | #include <dev/usb/emdtvvar.h> |
| 47 | #include <dev/usb/emdtvreg.h> |
| 48 | |
| 49 | static void emdtv_dtv_get_devinfo(void *, |
| 50 | struct dvb_frontend_info *); |
| 51 | static int emdtv_dtv_open(void *, int); |
| 52 | static void emdtv_dtv_close(void *); |
| 53 | static int emdtv_dtv_set_tuner(void *, |
| 54 | const struct dvb_frontend_parameters *); |
| 55 | static fe_status_t emdtv_dtv_get_status(void *); |
| 56 | static uint16_t emdtv_dtv_get_signal_strength(void *); |
| 57 | static uint16_t emdtv_dtv_get_snr(void *); |
| 58 | static int emdtv_dtv_start_transfer(void *, |
| 59 | void (*)(void *, const struct dtv_payload *), |
| 60 | void *); |
| 61 | static int emdtv_dtv_stop_transfer(void *); |
| 62 | |
| 63 | static int emdtv_dtv_tuner_reset(void *); |
| 64 | |
| 65 | static void emdtv_dtv_isoc_startall(struct emdtv_softc *); |
| 66 | static int emdtv_dtv_isoc_start(struct emdtv_softc *, |
| 67 | struct emdtv_isoc_xfer *); |
| 68 | static void emdtv_dtv_isoc(struct usbd_xfer *, void *, |
| 69 | usbd_status); |
| 70 | |
| 71 | static const struct dtv_hw_if emdtv_dtv_if = { |
| 72 | .get_devinfo = emdtv_dtv_get_devinfo, |
| 73 | .open = emdtv_dtv_open, |
| 74 | .close = emdtv_dtv_close, |
| 75 | .set_tuner = emdtv_dtv_set_tuner, |
| 76 | .get_status = emdtv_dtv_get_status, |
| 77 | .get_signal_strength = emdtv_dtv_get_signal_strength, |
| 78 | .get_snr = emdtv_dtv_get_snr, |
| 79 | .start_transfer = emdtv_dtv_start_transfer, |
| 80 | .stop_transfer = emdtv_dtv_stop_transfer, |
| 81 | }; |
| 82 | |
| 83 | void |
| 84 | emdtv_dtv_attach(struct emdtv_softc *sc) |
| 85 | { |
| 86 | usb_endpoint_descriptor_t *ed; |
| 87 | usbd_status status; |
| 88 | int i; |
| 89 | |
| 90 | for (i = 0; i < EMDTV_NXFERS; i++) { |
| 91 | sc->sc_ix[i].ix_altix = (i & 1) ? |
| 92 | &sc->sc_ix[i - 1] : &sc->sc_ix[i + 1]; |
| 93 | sc->sc_ix[i].ix_sc = sc; |
| 94 | } |
| 95 | |
| 96 | ed = usbd_interface2endpoint_descriptor(sc->sc_iface, 3); |
| 97 | if (ed == NULL) { |
| 98 | aprint_error_dev(sc->sc_dev, "couldn't find endpoint 3\n" ); |
| 99 | return; |
| 100 | } |
| 101 | sc->sc_isoc_maxpacketsize = UGETW(ed->wMaxPacketSize); |
| 102 | sc->sc_isoc_buflen = sc->sc_isoc_maxpacketsize * EMDTV_NFRAMES; |
| 103 | |
| 104 | aprint_debug_dev(sc->sc_dev, "calling usbd_open_pipe, ep 0x%02x\n" , |
| 105 | ed->bEndpointAddress); |
| 106 | status = usbd_open_pipe(sc->sc_iface, |
| 107 | ed->bEndpointAddress, USBD_EXCLUSIVE_USE|USBD_MPSAFE, |
| 108 | &sc->sc_isoc_pipe); |
| 109 | if (status != USBD_NORMAL_COMPLETION) { |
| 110 | aprint_error_dev(sc->sc_dev, "couldn't open isoc pipe\n" ); |
| 111 | usbd_set_interface(sc->sc_iface, 0); |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | emdtv_write_1(sc, UR_GET_STATUS, 0x48, 0x00); |
| 116 | emdtv_write_1(sc, UR_GET_STATUS, 0x12, 0x77); |
| 117 | usbd_delay_ms(sc->sc_udev, 6); |
| 118 | |
| 119 | emdtv_gpio_ctl(sc, EMDTV_GPIO_ANALOG_ON, false); |
| 120 | emdtv_gpio_ctl(sc, EMDTV_GPIO_TS1_ON, true); |
| 121 | emdtv_gpio_ctl(sc, EMDTV_GPIO_TUNER1_ON, true); |
| 122 | emdtv_gpio_ctl(sc, EMDTV_GPIO_DEMOD1_RESET, true); |
| 123 | usbd_delay_ms(sc->sc_udev, 100); |
| 124 | |
| 125 | emdtv_dtv_rescan(sc, NULL, NULL); |
| 126 | } |
| 127 | |
| 128 | static void |
| 129 | emdtv_dtv_free_xfers(struct emdtv_softc *sc) |
| 130 | { |
| 131 | |
| 132 | for (size_t i = 0; i < EMDTV_NXFERS; i++) |
| 133 | if (sc->sc_ix[i].ix_xfer) { |
| 134 | usbd_destroy_xfer(sc->sc_ix[i].ix_xfer); |
| 135 | sc->sc_ix[i].ix_xfer = NULL; |
| 136 | sc->sc_ix[i].ix_buf = NULL; |
| 137 | } |
| 138 | |
| 139 | return; |
| 140 | } |
| 141 | |
| 142 | void |
| 143 | emdtv_dtv_detach(struct emdtv_softc *sc, int flags) |
| 144 | { |
| 145 | sc->sc_streaming = false; |
| 146 | |
| 147 | if (sc->sc_dtvdev != NULL) { |
| 148 | config_detach(sc->sc_dtvdev, flags); |
| 149 | sc->sc_dtvdev = NULL; |
| 150 | } |
| 151 | |
| 152 | if (sc->sc_xc3028) |
| 153 | xc3028_close(sc->sc_xc3028); |
| 154 | if (sc->sc_lg3303) |
| 155 | lg3303_close(sc->sc_lg3303); |
| 156 | |
| 157 | if (sc->sc_isoc_pipe) { |
| 158 | usbd_abort_pipe(sc->sc_isoc_pipe); |
| 159 | emdtv_dtv_free_xfers(sc); |
| 160 | usbd_close_pipe(sc->sc_isoc_pipe); |
| 161 | sc->sc_isoc_pipe = NULL; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | void |
| 166 | emdtv_dtv_rescan(struct emdtv_softc *sc, const char *ifattr, const int *locs) |
| 167 | { |
| 168 | struct dtv_attach_args daa; |
| 169 | |
| 170 | daa.hw = &emdtv_dtv_if; |
| 171 | daa.priv = sc; |
| 172 | |
| 173 | if (ifattr_match(ifattr, "dtvbus" ) && sc->sc_dtvdev == NULL) |
| 174 | sc->sc_dtvdev = config_found_ia(sc->sc_dev, "dtvbus" , |
| 175 | &daa, dtv_print); |
| 176 | } |
| 177 | |
| 178 | static void |
| 179 | emdtv_dtv_get_devinfo(void *priv, struct dvb_frontend_info *info) |
| 180 | { |
| 181 | struct emdtv_softc *sc = priv; |
| 182 | |
| 183 | memset(info, 0, sizeof(*info)); |
| 184 | strlcpy(info->name, sc->sc_board->eb_name, sizeof(info->name)); |
| 185 | info->type = FE_ATSC; |
| 186 | info->frequency_min = 54000000; |
| 187 | info->frequency_max = 858000000; |
| 188 | info->frequency_stepsize = 62500; |
| 189 | info->caps = FE_CAN_8VSB; |
| 190 | } |
| 191 | |
| 192 | static int |
| 193 | emdtv_dtv_open(void *priv, int flags) |
| 194 | { |
| 195 | struct emdtv_softc *sc = priv; |
| 196 | |
| 197 | if (sc->sc_dying) |
| 198 | return ENXIO; |
| 199 | |
| 200 | aprint_debug_dev(sc->sc_dev, "allocating isoc xfers (pktsz %d)\n" , |
| 201 | sc->sc_isoc_maxpacketsize); |
| 202 | |
| 203 | for (size_t i = 0; i < EMDTV_NXFERS; i++) { |
| 204 | int error = usbd_create_xfer(sc->sc_isoc_pipe, |
| 205 | sc->sc_isoc_buflen, USBD_SHORT_XFER_OK, EMDTV_NFRAMES, |
| 206 | &sc->sc_ix[i].ix_xfer); |
| 207 | if (error) |
| 208 | return error; |
| 209 | sc->sc_ix[i].ix_buf = usbd_get_buffer(sc->sc_ix[i].ix_xfer); |
| 210 | aprint_debug_dev(sc->sc_dev, " ix[%zu] xfer %p buf %p\n" , |
| 211 | i, sc->sc_ix[i].ix_xfer, sc->sc_ix[i].ix_buf); |
| 212 | } |
| 213 | |
| 214 | switch (sc->sc_board->eb_tuner) { |
| 215 | case EMDTV_TUNER_XC3028: |
| 216 | if (sc->sc_xc3028 == NULL) { |
| 217 | sc->sc_xc3028 = xc3028_open(sc->sc_dev, |
| 218 | &sc->sc_i2c, 0x61 << 1, emdtv_dtv_tuner_reset, sc, |
| 219 | XC3028); |
| 220 | } |
| 221 | if (sc->sc_xc3028 == NULL) { |
| 222 | aprint_error_dev(sc->sc_dev, "couldn't open xc3028\n" ); |
| 223 | return ENXIO; |
| 224 | } |
| 225 | break; |
| 226 | case EMDTV_TUNER_XC3028L: |
| 227 | if (sc->sc_xc3028 == NULL) { |
| 228 | sc->sc_xc3028 = xc3028_open(sc->sc_dev, |
| 229 | &sc->sc_i2c, 0x61 << 1, emdtv_dtv_tuner_reset, sc, |
| 230 | XC3028L); |
| 231 | } |
| 232 | if (sc->sc_xc3028 == NULL) { |
| 233 | aprint_error_dev(sc->sc_dev, "couldn't open xc3028l\n" ); |
| 234 | return ENXIO; |
| 235 | } |
| 236 | break; |
| 237 | default: |
| 238 | aprint_error_dev(sc->sc_dev, "unsupported tuner (%d)\n" , |
| 239 | sc->sc_board->eb_tuner); |
| 240 | return EIO; |
| 241 | } |
| 242 | |
| 243 | switch (sc->sc_board->eb_demod) { |
| 244 | case EMDTV_DEMOD_LG3303: |
| 245 | if (sc->sc_lg3303 == NULL) { |
| 246 | sc->sc_lg3303 = lg3303_open(sc->sc_dev, |
| 247 | &sc->sc_i2c, 0x1c, 0); |
| 248 | } |
| 249 | if (sc->sc_lg3303 == NULL) { |
| 250 | aprint_error_dev(sc->sc_dev, "couldn't open lg3303\n" ); |
| 251 | return ENXIO; |
| 252 | } |
| 253 | break; |
| 254 | default: |
| 255 | aprint_error_dev(sc->sc_dev, "unsupported demod (%d)\n" , |
| 256 | sc->sc_board->eb_demod); |
| 257 | return EIO; |
| 258 | } |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static void |
| 264 | emdtv_dtv_close(void *priv) |
| 265 | { |
| 266 | struct emdtv_softc *sc = priv; |
| 267 | |
| 268 | emdtv_dtv_free_xfers(sc); |
| 269 | } |
| 270 | |
| 271 | static int |
| 272 | emdtv_dtv_set_tuner(void *priv, const struct dvb_frontend_parameters *params) |
| 273 | { |
| 274 | struct emdtv_softc *sc = priv; |
| 275 | int error; |
| 276 | |
| 277 | /* Setup demod */ |
| 278 | error = ENXIO; |
| 279 | if (sc->sc_lg3303) |
| 280 | error = lg3303_set_modulation(sc->sc_lg3303, |
| 281 | params->u.vsb.modulation); |
| 282 | if (error) |
| 283 | return error; |
| 284 | |
| 285 | /* Setup tuner */ |
| 286 | error = ENXIO; |
| 287 | if (sc->sc_xc3028) |
| 288 | error = xc3028_tune_dtv(sc->sc_xc3028, params); |
| 289 | |
| 290 | return error; |
| 291 | } |
| 292 | |
| 293 | static fe_status_t |
| 294 | emdtv_dtv_get_status(void *priv) |
| 295 | { |
| 296 | struct emdtv_softc *sc = priv; |
| 297 | |
| 298 | if (sc->sc_lg3303) |
| 299 | return lg3303_get_dtv_status(sc->sc_lg3303); |
| 300 | |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | uint16_t |
| 305 | emdtv_dtv_get_signal_strength(void *priv) |
| 306 | { |
| 307 | struct emdtv_softc *sc = priv; |
| 308 | |
| 309 | if (sc->sc_lg3303) |
| 310 | return lg3303_get_signal_strength(sc->sc_lg3303); |
| 311 | |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | uint16_t |
| 316 | emdtv_dtv_get_snr(void *priv) |
| 317 | { |
| 318 | struct emdtv_softc *sc = priv; |
| 319 | |
| 320 | if (sc->sc_lg3303) |
| 321 | return lg3303_get_snr(sc->sc_lg3303); |
| 322 | |
| 323 | return 0; |
| 324 | } |
| 325 | |
| 326 | static int |
| 327 | emdtv_dtv_start_transfer(void *priv, |
| 328 | void (*cb)(void *, const struct dtv_payload *), void *arg) |
| 329 | { |
| 330 | struct emdtv_softc *sc = priv; |
| 331 | int s; |
| 332 | |
| 333 | s = splusb(); |
| 334 | |
| 335 | sc->sc_streaming = true; |
| 336 | sc->sc_dtvsubmitcb = cb; |
| 337 | sc->sc_dtvsubmitarg = arg; |
| 338 | |
| 339 | aprint_debug_dev(sc->sc_dev, "starting isoc transactions\n" ); |
| 340 | |
| 341 | emdtv_dtv_isoc_startall(sc); |
| 342 | splx(s); |
| 343 | |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | static int |
| 348 | emdtv_dtv_stop_transfer(void *priv) |
| 349 | { |
| 350 | struct emdtv_softc *sc = priv; |
| 351 | |
| 352 | aprint_debug_dev(sc->sc_dev, "stopping stream\n" ); |
| 353 | |
| 354 | sc->sc_streaming = false; |
| 355 | |
| 356 | KERNEL_LOCK(1, curlwp); |
| 357 | if (sc->sc_isoc_pipe != NULL) |
| 358 | usbd_abort_pipe(sc->sc_isoc_pipe); |
| 359 | KERNEL_UNLOCK_ONE(curlwp); |
| 360 | |
| 361 | sc->sc_dtvsubmitcb = NULL; |
| 362 | sc->sc_dtvsubmitarg = NULL; |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | static void |
| 368 | emdtv_dtv_isoc_startall(struct emdtv_softc *sc) |
| 369 | { |
| 370 | int i; |
| 371 | |
| 372 | if (sc->sc_streaming == false || sc->sc_dying == true) |
| 373 | return; |
| 374 | |
| 375 | for (i = 0; i < EMDTV_NXFERS; i += 2) |
| 376 | emdtv_dtv_isoc_start(sc, &sc->sc_ix[i]); |
| 377 | } |
| 378 | |
| 379 | static int |
| 380 | emdtv_dtv_isoc_start(struct emdtv_softc *sc, struct emdtv_isoc_xfer *ix) |
| 381 | { |
| 382 | int i; |
| 383 | |
| 384 | if (sc->sc_isoc_pipe == NULL) |
| 385 | return EIO; |
| 386 | |
| 387 | for (i = 0; i < EMDTV_NFRAMES; i++) |
| 388 | ix->ix_frlengths[i] = sc->sc_isoc_maxpacketsize; |
| 389 | |
| 390 | usbd_setup_isoc_xfer(ix->ix_xfer, |
| 391 | ix, |
| 392 | ix->ix_frlengths, |
| 393 | EMDTV_NFRAMES, |
| 394 | USBD_SHORT_XFER_OK, |
| 395 | emdtv_dtv_isoc); |
| 396 | |
| 397 | KERNEL_LOCK(1, curlwp); |
| 398 | usbd_transfer(ix->ix_xfer); |
| 399 | KERNEL_UNLOCK_ONE(curlwp); |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static void |
| 405 | emdtv_dtv_isoc(struct usbd_xfer *xfer, void * priv, |
| 406 | usbd_status err) |
| 407 | { |
| 408 | struct emdtv_isoc_xfer *ix = priv; |
| 409 | struct emdtv_softc *sc = ix->ix_sc; |
| 410 | struct dtv_payload payload; |
| 411 | struct usbd_pipe *isoc = sc->sc_isoc_pipe; |
| 412 | uint32_t len; |
| 413 | uint8_t *buf; |
| 414 | int i; |
| 415 | |
| 416 | KASSERT(xfer == ix->ix_xfer); |
| 417 | |
| 418 | if (sc->sc_dying || sc->sc_dtvsubmitcb == NULL) |
| 419 | return; |
| 420 | |
| 421 | if (err) { |
| 422 | if (err == USBD_STALLED) { |
| 423 | usbd_clear_endpoint_stall_async(isoc); |
| 424 | goto resched; |
| 425 | } |
| 426 | return; |
| 427 | } |
| 428 | |
| 429 | usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); |
| 430 | |
| 431 | if (len == 0) |
| 432 | goto resched; |
| 433 | |
| 434 | buf = usbd_get_buffer(xfer); |
| 435 | if (buf == NULL) |
| 436 | goto resched; |
| 437 | |
| 438 | for (i = 0; i < EMDTV_NFRAMES; i++, buf += sc->sc_isoc_maxpacketsize) { |
| 439 | if (ix->ix_frlengths[i] == 0) |
| 440 | continue; |
| 441 | payload.data = buf; |
| 442 | payload.size = ix->ix_frlengths[i]; |
| 443 | sc->sc_dtvsubmitcb(sc->sc_dtvsubmitarg, &payload); |
| 444 | } |
| 445 | |
| 446 | resched: |
| 447 | emdtv_dtv_isoc_start(sc, ix->ix_altix); |
| 448 | } |
| 449 | |
| 450 | static int |
| 451 | emdtv_dtv_tuner_reset(void *opaque) |
| 452 | { |
| 453 | struct emdtv_softc *sc = opaque; |
| 454 | emdtv_gpio_ctl(sc, EMDTV_GPIO_TUNER1_RESET, true); |
| 455 | return 0; |
| 456 | } |
| 457 | |