2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "libsigrok.h"
27 #include "libsigrok-internal.h"
31 static const struct fx2lafw_profile supported_fx2[] = {
34 * EE Electronics ESLA201A
37 { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
38 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
44 { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
45 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
51 { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
52 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
57 * EE Electronics ESLA100
59 * Robomotic BugLogic 3
61 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
62 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
66 * Default Cypress FX2 without EEPROM, e.g.:
68 * Braintechnology USB Interface V2.x
70 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
71 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
75 * Braintechnology USB-LPS
77 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
78 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
81 { 0, 0, 0, 0, 0, 0, 0 }
84 static const int32_t hwopts[] = {
88 static const int32_t hwcaps[] = {
89 SR_CONF_LOGIC_ANALYZER,
93 /* These are really implemented in the driver, not the hardware. */
94 SR_CONF_LIMIT_SAMPLES,
98 static const char *probe_names[] = {
99 "0", "1", "2", "3", "4", "5", "6", "7",
100 "8", "9", "10", "11", "12", "13", "14", "15",
104 static const uint64_t samplerates[] = {
123 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
124 static struct sr_dev_driver *di = &fx2lafw_driver_info;
127 * Check the USB configuration to determine if this is an fx2lafw device.
129 * @return TRUE if the device's configuration profile match fx2lafw
130 * configuration, FALSE otherwise.
132 static gboolean check_conf_profile(libusb_device *dev)
134 struct libusb_device_descriptor des;
135 struct libusb_device_handle *hdl;
137 unsigned char strdesc[64];
142 /* Assume the FW has not been loaded, unless proven wrong. */
143 if (libusb_get_device_descriptor(dev, &des) != 0)
146 if (libusb_open(dev, &hdl) != 0)
149 if (libusb_get_string_descriptor_ascii(hdl,
150 des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
152 if (strncmp((const char *)strdesc, "sigrok", 6))
155 if (libusb_get_string_descriptor_ascii(hdl,
156 des.iProduct, strdesc, sizeof(strdesc)) < 0)
158 if (strncmp((const char *)strdesc, "fx2lafw", 7))
161 /* If we made it here, it must be an fx2lafw. */
170 static int fx2lafw_dev_open(struct sr_dev_inst *sdi)
172 libusb_device **devlist;
173 struct sr_usb_dev_inst *usb;
174 struct libusb_device_descriptor des;
175 struct dev_context *devc;
176 struct drv_context *drvc;
177 struct version_info vi;
178 int ret, skip, i, device_count;
185 if (sdi->status == SR_ST_ACTIVE)
186 /* Device is already in use. */
190 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
191 if (device_count < 0) {
192 sr_err("Failed to get device list: %s.",
193 libusb_error_name(device_count));
197 for (i = 0; i < device_count; i++) {
198 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
199 sr_err("Failed to get device descriptor: %s.",
200 libusb_error_name(ret));
204 if (des.idVendor != devc->profile->vid
205 || des.idProduct != devc->profile->pid)
208 if (sdi->status == SR_ST_INITIALIZING) {
209 if (skip != sdi->index) {
210 /* Skip devices of this type that aren't the one we want. */
214 } else if (sdi->status == SR_ST_INACTIVE) {
216 * This device is fully enumerated, so we need to find
217 * this device by vendor, product, bus and address.
219 if (libusb_get_bus_number(devlist[i]) != usb->bus
220 || libusb_get_device_address(devlist[i]) != usb->address)
221 /* This is not the one. */
225 if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
226 if (usb->address == 0xff)
228 * First time we touch this device after FW
229 * upload, so we don't know the address yet.
231 usb->address = libusb_get_device_address(devlist[i]);
233 sr_err("Failed to open device: %s.",
234 libusb_error_name(ret));
238 ret = command_get_fw_version(usb->devhdl, &vi);
240 sr_err("Failed to get firmware version.");
244 ret = command_get_revid_version(usb->devhdl, &revid);
246 sr_err("Failed to get REVID.");
251 * Changes in major version mean incompatible/API changes, so
252 * bail out if we encounter an incompatible version.
253 * Different minor versions are OK, they should be compatible.
255 if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
256 sr_err("Expected firmware version %d.x, "
257 "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
262 sdi->status = SR_ST_ACTIVE;
263 sr_info("Opened device %d on %d.%d, "
264 "interface %d, firmware %d.%d.",
265 sdi->index, usb->bus, usb->address,
266 USB_INTERFACE, vi.major, vi.minor);
268 sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
269 revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
273 libusb_free_device_list(devlist, 1);
275 if (sdi->status != SR_ST_ACTIVE)
281 static int configure_probes(const struct sr_dev_inst *sdi)
283 struct dev_context *devc;
284 struct sr_probe *probe;
286 int probe_bit, stage, i;
290 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
291 devc->trigger_mask[i] = 0;
292 devc->trigger_value[i] = 0;
296 for (l = sdi->probes; l; l = l->next) {
297 probe = (struct sr_probe *)l->data;
298 if (probe->enabled == FALSE)
301 if (probe->index > 7)
302 devc->sample_wide = TRUE;
304 probe_bit = 1 << (probe->index);
305 if (!(probe->trigger))
309 for (tc = probe->trigger; *tc; tc++) {
310 devc->trigger_mask[stage] |= probe_bit;
312 devc->trigger_value[stage] |= probe_bit;
314 if (stage > NUM_TRIGGER_STAGES)
321 * We didn't configure any triggers, make sure acquisition
322 * doesn't wait for any.
324 devc->trigger_stage = TRIGGER_FIRED;
326 devc->trigger_stage = 0;
331 static struct dev_context *fx2lafw_dev_new(void)
333 struct dev_context *devc;
335 if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
336 sr_err("Device context malloc failed.");
340 devc->profile = NULL;
341 devc->fw_updated = 0;
342 devc->cur_samplerate = 0;
343 devc->limit_samples = 0;
344 devc->sample_wide = 0;
350 static int clear_instances(void)
352 return std_dev_clear(di, NULL);
355 static int hw_init(struct sr_context *sr_ctx)
357 return std_hw_init(sr_ctx, di, LOG_PREFIX);
360 static GSList *hw_scan(GSList *options)
362 struct drv_context *drvc;
363 struct dev_context *devc;
364 struct sr_dev_inst *sdi;
365 struct sr_usb_dev_inst *usb;
366 struct sr_probe *probe;
367 struct sr_config *src;
368 const struct fx2lafw_profile *prof;
369 GSList *l, *devices, *conn_devices;
370 struct libusb_device_descriptor des;
371 libusb_device **devlist;
372 int devcnt, num_logic_probes, ret, i, j;
378 for (l = options; l; l = l->next) {
382 conn = g_variant_get_string(src->data, NULL);
387 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
391 /* Find all fx2lafw compatible devices and upload firmware to them. */
393 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
394 for (i = 0; devlist[i]; i++) {
397 for (l = conn_devices; l; l = l->next) {
399 if (usb->bus == libusb_get_bus_number(devlist[i])
400 && usb->address == libusb_get_device_address(devlist[i]))
404 /* This device matched none of the ones that
405 * matched the conn specification. */
409 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
410 sr_warn("Failed to get device descriptor: %s.",
411 libusb_error_name(ret));
416 for (j = 0; supported_fx2[j].vid; j++) {
417 if (des.idVendor == supported_fx2[j].vid &&
418 des.idProduct == supported_fx2[j].pid) {
419 prof = &supported_fx2[j];
423 /* Skip if the device was not found. */
427 devcnt = g_slist_length(drvc->instances);
428 sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
429 prof->vendor, prof->model, prof->model_version);
434 /* Fill in probelist according to this device's profile. */
435 num_logic_probes = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
436 for (j = 0; j < num_logic_probes; j++) {
437 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
440 sdi->probes = g_slist_append(sdi->probes, probe);
443 devc = fx2lafw_dev_new();
444 devc->profile = prof;
446 drvc->instances = g_slist_append(drvc->instances, sdi);
447 devices = g_slist_append(devices, sdi);
449 if (check_conf_profile(devlist[i])) {
450 /* Already has the firmware, so fix the new address. */
451 sr_dbg("Found an fx2lafw device.");
452 sdi->status = SR_ST_INACTIVE;
453 sdi->inst_type = SR_INST_USB;
454 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
455 libusb_get_device_address(devlist[i]), NULL);
457 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
458 prof->firmware) == SR_OK)
459 /* Store when this device's FW was updated. */
460 devc->fw_updated = g_get_monotonic_time();
462 sr_err("Firmware upload failed for "
463 "device %d.", devcnt);
464 sdi->inst_type = SR_INST_USB;
465 sdi->conn = sr_usb_dev_inst_new (libusb_get_bus_number(devlist[i]),
469 libusb_free_device_list(devlist, 1);
470 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
475 static GSList *hw_dev_list(void)
477 return ((struct drv_context *)(di->priv))->instances;
480 static int hw_dev_open(struct sr_dev_inst *sdi)
482 struct sr_usb_dev_inst *usb;
483 struct dev_context *devc;
485 int64_t timediff_us, timediff_ms;
491 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
492 * milliseconds for the FX2 to renumerate.
495 if (devc->fw_updated > 0) {
496 sr_info("Waiting for device to reset.");
497 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
498 g_usleep(300 * 1000);
500 while (timediff_ms < MAX_RENUM_DELAY_MS) {
501 if ((ret = fx2lafw_dev_open(sdi)) == SR_OK)
503 g_usleep(100 * 1000);
505 timediff_us = g_get_monotonic_time() - devc->fw_updated;
506 timediff_ms = timediff_us / 1000;
507 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
510 sr_err("Device failed to renumerate.");
513 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
515 sr_info("Firmware upload was not needed.");
516 ret = fx2lafw_dev_open(sdi);
520 sr_err("Unable to open device.");
524 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
527 case LIBUSB_ERROR_BUSY:
528 sr_err("Unable to claim USB interface. Another "
529 "program or driver has already claimed it.");
531 case LIBUSB_ERROR_NO_DEVICE:
532 sr_err("Device has been disconnected.");
535 sr_err("Unable to claim interface: %s.",
536 libusb_error_name(ret));
543 if (devc->cur_samplerate == 0) {
544 /* Samplerate hasn't been set; default to the slowest one. */
545 devc->cur_samplerate = samplerates[0];
551 static int hw_dev_close(struct sr_dev_inst *sdi)
553 struct sr_usb_dev_inst *usb;
556 if (usb->devhdl == NULL)
559 sr_info("fx2lafw: Closing device %d on %d.%d interface %d.",
560 sdi->index, usb->bus, usb->address, USB_INTERFACE);
561 libusb_release_interface(usb->devhdl, USB_INTERFACE);
562 libusb_close(usb->devhdl);
564 sdi->status = SR_ST_INACTIVE;
569 static int hw_cleanup(void)
571 struct drv_context *drvc;
574 if (!(drvc = di->priv))
577 ret = clear_instances();
585 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
587 struct dev_context *devc;
588 struct sr_usb_dev_inst *usb;
593 if (!sdi || !sdi->conn)
596 if (usb->address == 255)
597 /* Device still needs to re-enumerate after firmware
598 * upload, so we don't know its (future) address. */
600 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
601 *data = g_variant_new_string(str);
603 case SR_CONF_SAMPLERATE:
607 *data = g_variant_new_uint64(devc->cur_samplerate);
616 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
618 struct dev_context *devc;
621 if (sdi->status != SR_ST_ACTIVE)
626 if (id == SR_CONF_SAMPLERATE) {
627 devc->cur_samplerate = g_variant_get_uint64(data);
629 } else if (id == SR_CONF_LIMIT_SAMPLES) {
630 devc->limit_samples = g_variant_get_uint64(data);
639 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
647 case SR_CONF_SCAN_OPTIONS:
648 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
649 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
651 case SR_CONF_DEVICE_OPTIONS:
652 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
653 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
655 case SR_CONF_SAMPLERATE:
656 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
657 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
658 ARRAY_SIZE(samplerates), sizeof(uint64_t));
659 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
660 *data = g_variant_builder_end(&gvb);
662 case SR_CONF_TRIGGER_TYPE:
663 *data = g_variant_new_string(TRIGGER_TYPE);
672 static int receive_data(int fd, int revents, void *cb_data)
675 struct drv_context *drvc;
683 tv.tv_sec = tv.tv_usec = 0;
684 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
689 static void abort_acquisition(struct dev_context *devc)
693 devc->num_samples = -1;
695 for (i = devc->num_transfers - 1; i >= 0; i--) {
696 if (devc->transfers[i])
697 libusb_cancel_transfer(devc->transfers[i]);
701 static void finish_acquisition(struct dev_context *devc)
703 struct sr_datafeed_packet packet;
706 /* Terminate session. */
707 packet.type = SR_DF_END;
708 sr_session_send(devc->cb_data, &packet);
710 /* Remove fds from polling. */
711 for (i = 0; devc->usbfd[i] != -1; i++)
712 sr_source_remove(devc->usbfd[i]);
715 devc->num_transfers = 0;
716 g_free(devc->transfers);
719 static void free_transfer(struct libusb_transfer *transfer)
721 struct dev_context *devc;
724 devc = transfer->user_data;
726 g_free(transfer->buffer);
727 transfer->buffer = NULL;
728 libusb_free_transfer(transfer);
730 for (i = 0; i < devc->num_transfers; i++) {
731 if (devc->transfers[i] == transfer) {
732 devc->transfers[i] = NULL;
737 devc->submitted_transfers--;
738 if (devc->submitted_transfers == 0)
739 finish_acquisition(devc);
742 static void resubmit_transfer(struct libusb_transfer *transfer)
746 if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
749 free_transfer(transfer);
750 /* TODO: Stop session? */
752 sr_err("%s: %s", __func__, libusb_error_name(ret));
755 static void receive_transfer(struct libusb_transfer *transfer)
757 gboolean packet_has_error = FALSE;
758 struct sr_datafeed_packet packet;
759 struct sr_datafeed_logic logic;
760 struct dev_context *devc;
761 int trigger_offset, i, sample_width, cur_sample_count;
762 int trigger_offset_bytes;
765 devc = transfer->user_data;
768 * If acquisition has already ended, just free any queued up
769 * transfer that come in.
771 if (devc->num_samples == -1) {
772 free_transfer(transfer);
776 sr_info("receive_transfer(): status %d received %d bytes.",
777 transfer->status, transfer->actual_length);
779 /* Save incoming transfer before reusing the transfer struct. */
780 cur_buf = transfer->buffer;
781 sample_width = devc->sample_wide ? 2 : 1;
782 cur_sample_count = transfer->actual_length / sample_width;
784 switch (transfer->status) {
785 case LIBUSB_TRANSFER_NO_DEVICE:
786 abort_acquisition(devc);
787 free_transfer(transfer);
789 case LIBUSB_TRANSFER_COMPLETED:
790 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
793 packet_has_error = TRUE;
797 if (transfer->actual_length == 0 || packet_has_error) {
798 devc->empty_transfer_count++;
799 if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
801 * The FX2 gave up. End the acquisition, the frontend
802 * will work out that the samplecount is short.
804 abort_acquisition(devc);
805 free_transfer(transfer);
807 resubmit_transfer(transfer);
811 devc->empty_transfer_count = 0;
815 if (devc->trigger_stage >= 0) {
816 for (i = 0; i < cur_sample_count; i++) {
818 const uint16_t cur_sample = devc->sample_wide ?
819 *((const uint16_t*)cur_buf + i) :
820 *((const uint8_t*)cur_buf + i);
822 if ((cur_sample & devc->trigger_mask[devc->trigger_stage]) ==
823 devc->trigger_value[devc->trigger_stage]) {
824 /* Match on this trigger stage. */
825 devc->trigger_buffer[devc->trigger_stage] = cur_sample;
826 devc->trigger_stage++;
828 if (devc->trigger_stage == NUM_TRIGGER_STAGES ||
829 devc->trigger_mask[devc->trigger_stage] == 0) {
830 /* Match on all trigger stages, we're done. */
831 trigger_offset = i + 1;
834 * TODO: Send pre-trigger buffer to session bus.
835 * Tell the frontend we hit the trigger here.
837 packet.type = SR_DF_TRIGGER;
838 packet.payload = NULL;
839 sr_session_send(devc->cb_data, &packet);
842 * Send the samples that triggered it,
843 * since we're skipping past them.
845 packet.type = SR_DF_LOGIC;
846 packet.payload = &logic;
847 logic.unitsize = sizeof(*devc->trigger_buffer);
848 logic.length = devc->trigger_stage * logic.unitsize;
849 logic.data = devc->trigger_buffer;
850 sr_session_send(devc->cb_data, &packet);
852 devc->trigger_stage = TRIGGER_FIRED;
855 } else if (devc->trigger_stage > 0) {
857 * We had a match before, but not in the next sample. However, we may
858 * have a match on this stage in the next bit -- trigger on 0001 will
859 * fail on seeing 00001, so we need to go back to stage 0 -- but at
860 * the next sample from the one that matched originally, which the
861 * counter increment at the end of the loop takes care of.
863 i -= devc->trigger_stage;
865 i = -1; /* Oops, went back past this buffer. */
866 /* Reset trigger stage. */
867 devc->trigger_stage = 0;
872 if (devc->trigger_stage == TRIGGER_FIRED) {
873 /* Send the incoming transfer to the session bus. */
874 trigger_offset_bytes = trigger_offset * sample_width;
875 packet.type = SR_DF_LOGIC;
876 packet.payload = &logic;
877 logic.length = transfer->actual_length - trigger_offset_bytes;
878 logic.unitsize = sample_width;
879 logic.data = cur_buf + trigger_offset_bytes;
880 sr_session_send(devc->cb_data, &packet);
882 devc->num_samples += cur_sample_count;
883 if (devc->limit_samples &&
884 (unsigned int)devc->num_samples > devc->limit_samples) {
885 abort_acquisition(devc);
886 free_transfer(transfer);
891 * TODO: Buffer pre-trigger data in capture
892 * ratio-sized buffer.
896 resubmit_transfer(transfer);
899 static unsigned int to_bytes_per_ms(unsigned int samplerate)
901 return samplerate / 1000;
904 static size_t get_buffer_size(struct dev_context *devc)
909 * The buffer should be large enough to hold 10ms of data and
912 s = 10 * to_bytes_per_ms(devc->cur_samplerate);
913 return (s + 511) & ~511;
916 static unsigned int get_number_of_transfers(struct dev_context *devc)
920 /* Total buffer size should be able to hold about 500ms of data. */
921 n = 500 * to_bytes_per_ms(devc->cur_samplerate) / get_buffer_size(devc);
923 if (n > NUM_SIMUL_TRANSFERS)
924 return NUM_SIMUL_TRANSFERS;
929 static unsigned int get_timeout(struct dev_context *devc)
932 unsigned int timeout;
934 total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
935 timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
936 return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
939 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
942 struct dev_context *devc;
943 struct drv_context *drvc;
944 struct sr_usb_dev_inst *usb;
945 struct libusb_transfer *transfer;
946 const struct libusb_pollfd **lupfd;
947 unsigned int i, timeout, num_transfers;
952 if (sdi->status != SR_ST_ACTIVE)
953 return SR_ERR_DEV_CLOSED;
959 /* Configures devc->trigger_* and devc->sample_wide */
960 if (configure_probes(sdi) != SR_OK) {
961 sr_err("Failed to configure probes.");
965 devc->cb_data = cb_data;
966 devc->num_samples = 0;
967 devc->empty_transfer_count = 0;
969 timeout = get_timeout(devc);
970 num_transfers = get_number_of_transfers(devc);
971 size = get_buffer_size(devc);
972 devc->submitted_transfers = 0;
974 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
975 if (!devc->transfers) {
976 sr_err("USB transfers malloc failed.");
977 return SR_ERR_MALLOC;
980 devc->num_transfers = num_transfers;
981 for (i = 0; i < num_transfers; i++) {
982 if (!(buf = g_try_malloc(size))) {
983 sr_err("USB transfer buffer malloc failed.");
984 return SR_ERR_MALLOC;
986 transfer = libusb_alloc_transfer(0);
987 libusb_fill_bulk_transfer(transfer, usb->devhdl,
988 2 | LIBUSB_ENDPOINT_IN, buf, size,
989 receive_transfer, devc, timeout);
990 if ((ret = libusb_submit_transfer(transfer)) != 0) {
991 sr_err("Failed to submit transfer: %s.",
992 libusb_error_name(ret));
993 libusb_free_transfer(transfer);
995 abort_acquisition(devc);
998 devc->transfers[i] = transfer;
999 devc->submitted_transfers++;
1002 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
1003 for (i = 0; lupfd[i]; i++);
1004 if (!(devc->usbfd = g_try_malloc(sizeof(struct libusb_pollfd) * (i + 1))))
1006 for (i = 0; lupfd[i]; i++) {
1007 sr_source_add(lupfd[i]->fd, lupfd[i]->events,
1008 timeout, receive_data, NULL);
1009 devc->usbfd[i] = lupfd[i]->fd;
1011 devc->usbfd[i] = -1;
1014 /* Send header packet to the session bus. */
1015 std_session_send_df_header(cb_data, LOG_PREFIX);
1017 if ((ret = command_start_acquisition (usb->devhdl,
1018 devc->cur_samplerate, devc->sample_wide)) != SR_OK) {
1019 abort_acquisition(devc);
1026 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1030 abort_acquisition(sdi->priv);
1035 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
1037 .longname = "fx2lafw (generic driver for FX2 based LAs)",
1040 .cleanup = hw_cleanup,
1042 .dev_list = hw_dev_list,
1043 .dev_clear = clear_instances,
1044 .config_get = config_get,
1045 .config_set = config_set,
1046 .config_list = config_list,
1047 .dev_open = hw_dev_open,
1048 .dev_close = hw_dev_close,
1049 .dev_acquisition_start = hw_dev_acquisition_start,
1050 .dev_acquisition_stop = hw_dev_acquisition_stop,