[libsigrok.git] / src / hardware / lecroy-logicstudio / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Tilman Sauerbeck <tilman@code-monkey.de>
 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "protocol.h"

#define LOGICSTUDIO16_VID 0x05ff
#define LOGICSTUDIO16_PID_LACK_FIRMWARE 0xa001
#define LOGICSTUDIO16_PID_HAVE_FIRMWARE 0xa002

#define USB_INTERFACE 0
#define USB_CONFIGURATION 0
#define FX2_FIRMWARE "lecroy-logicstudio16-fx2lp.fw"

#define UNKNOWN_ADDRESS 0xff
#define MAX_RENUM_DELAY_MS 3000

#define NUM_CHANNELS 16

static const uint32_t drvopts[] = {
	SR_CONF_LOGIC_ANALYZER,
};

static const uint32_t devopts[] = {
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
};

static const int32_t trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
	SR_TRIGGER_EDGE,
};

static const uint64_t samplerates[] = {
	SR_HZ(1000),
	SR_HZ(2500),
	SR_KHZ(5),
	SR_KHZ(10),
	SR_KHZ(25),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(250),
	SR_KHZ(500),
	SR_KHZ(1000),
	SR_KHZ(2500),
	SR_MHZ(5),
	SR_MHZ(10),
	SR_MHZ(25),
	SR_MHZ(50),
	SR_MHZ(100),
	SR_MHZ(250),
	SR_MHZ(500),
};

static struct sr_dev_inst *create_device(struct sr_usb_dev_inst *usb,
		enum sr_dev_inst_status status, int64_t fw_updated)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	char channel_name[8];
	int i;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = status;
	sdi->vendor = g_strdup("LeCroy");
	sdi->model = g_strdup("LogicStudio16");
	sdi->inst_type = SR_INST_USB;
	sdi->conn = usb;

	for (i = 0; i < NUM_CHANNELS; i++) {
		snprintf(channel_name, sizeof(channel_name), "D%i", i);
		sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
	}

	devc = g_malloc0(sizeof(struct dev_context));

	sdi->priv = devc;

	devc->fw_updated = fw_updated;
	devc->capture_ratio = 50;

	lls_set_samplerate(sdi, SR_MHZ(500));

	return sdi;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	struct libusb_device_descriptor des;
	libusb_device **devlist;
	GSList *devices;
	char connection_id[64];
	size_t i;
	int r;

	(void)options;

	drvc = di->context;

	devices = NULL;

	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);

	for (i = 0; devlist[i]; i++) {
		libusb_get_device_descriptor(devlist[i], &des);

		if (des.idVendor != LOGICSTUDIO16_VID)
			continue;

		usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));

		usb = NULL;

		switch (des.idProduct) {
		case LOGICSTUDIO16_PID_HAVE_FIRMWARE:
			usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
				libusb_get_device_address(devlist[i]), NULL);

			sdi = create_device(usb, SR_ST_INACTIVE, 0);
			break;
		case LOGICSTUDIO16_PID_LACK_FIRMWARE:
			r = ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
				USB_CONFIGURATION, FX2_FIRMWARE);
			if (r != SR_OK) {
				/*
				 * An error message has already been logged by
				 * ezusb_upload_firmware().
				 */
				continue;
			}

			/*
			 * Put unknown as the address so that we know we still
			 * need to get the proper address after the device
			 * renumerates.
			 */
			usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
				UNKNOWN_ADDRESS, NULL);

			sdi = create_device(usb, SR_ST_INITIALIZING,
				g_get_monotonic_time());
			break;
		default:
			break;
		}

		/* Cannot handle this device? */
		if (!usb)
			continue;

		sdi->connection_id = g_strdup(connection_id);

		devices = g_slist_append(devices, sdi);
	}

	libusb_free_device_list(devlist, 1);

	return std_scan_complete(di, devices);
}

static int open_device(struct sr_dev_inst *sdi)
{
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	struct libusb_device_descriptor des;
	libusb_device **devlist;
	char connection_id[64];
	bool is_opened;
	size_t i;
	int r;

	drvc = sdi->driver->context;
	usb = sdi->conn;

	is_opened = FALSE;

	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);

	for (i = 0; devlist[i]; i++) {
		libusb_get_device_descriptor(devlist[i], &des);

		if (des.idVendor != LOGICSTUDIO16_VID ||
			des.idProduct != LOGICSTUDIO16_PID_HAVE_FIRMWARE)
			continue;

		usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));

		/*
		 * Check if this device is the same one that we associated
		 * with this sdi in scan() and bail if it isn't.
		 */
		if (strcmp(sdi->connection_id, connection_id))
			continue;

		r = libusb_open(devlist[i], &usb->devhdl);

		if (r) {
			sr_err("Failed to open device: %s.",
				libusb_error_name(r));
			break;
		}

		/* Fix up address after firmware upload. */
		if (usb->address == UNKNOWN_ADDRESS)
			usb->address = libusb_get_device_address(devlist[i]);

		is_opened = TRUE;

		break;
	}

	libusb_free_device_list(devlist, 1);

	if (!is_opened)
		return SR_ERR;

	if ((r = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
		sr_err("Failed to claim interface: %s.",
			libusb_error_name(r));
		return SR_ERR;
	}

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	int64_t timediff_us, timediff_ms;
	int ret;

	devc = sdi->priv;

	/*
	 * If we didn't need to upload FX2 firmware in scan(), open the device
	 * right away. Otherwise, wait up to MAX_RENUM_DELAY_MS ms for the
	 * FX2 to renumerate.
	 */
	if (!devc->fw_updated) {
		ret = open_device(sdi);
	} else {
		sr_info("Waiting for device to reset.");

		/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
		g_usleep(300 * 1000);
		timediff_ms = 0;

		while (timediff_ms < MAX_RENUM_DELAY_MS) {
			ret = open_device(sdi);

			if (ret == SR_OK)
				break;

			g_usleep(100 * 1000);

			timediff_us = g_get_monotonic_time() - devc->fw_updated;
			timediff_ms = timediff_us / 1000;

			sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
		}

		if (ret != SR_OK) {
			sr_err("Device failed to renumerate.");
			return SR_ERR;
		}

		sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
	}

	if (ret != SR_OK) {
		sr_err("Unable to open device.");
		return ret;
	}

	/*
	 * Only allocate the sample buffer now since it's rather large.
	 * Don't want to allocate it before we know we are going to use it.
	 */
	devc->fetched_samples = g_malloc(SAMPLE_BUF_SIZE);

	devc->conv8to16 = g_malloc(CONV_8TO16_BUF_SIZE);

	devc->intr_xfer = libusb_alloc_transfer(0);
	devc->bulk_xfer = libusb_alloc_transfer(0);

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb;
	struct dev_context *devc;

	usb = sdi->conn;
	devc = sdi->priv;

	g_free(devc->fetched_samples);
	devc->fetched_samples = NULL;

	g_free(devc->conv8to16);
	devc->conv8to16 = NULL;

	if (devc->intr_xfer) {
		devc->intr_xfer->buffer = NULL; /* Points into devc. */
		libusb_free_transfer(devc->intr_xfer);
		devc->intr_xfer = NULL;
	}

	if (devc->bulk_xfer) {
		devc->bulk_xfer->buffer = NULL; /* Points into devc. */
		libusb_free_transfer(devc->bulk_xfer);
		devc->bulk_xfer = NULL;
	}

	if (!usb->devhdl)
		return SR_ERR_BUG;

	libusb_release_interface(usb->devhdl, 0);

	libusb_close(usb->devhdl);
	usb->devhdl = NULL;

	return SR_OK;
}

static int config_get(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(lls_get_samplerate(sdi));
		break;
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		return lls_set_samplerate(sdi, g_variant_get_uint64(data));
	case SR_CONF_CAPTURE_RATIO:
		devc->capture_ratio = g_variant_get_uint64(data);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_commit(const struct sr_dev_inst *sdi)
{
	return lls_setup_acquisition(sdi);
}

static int receive_usb_data(int fd, int revents, void *cb_data)
{
	struct drv_context *drvc;
	struct timeval tv;

	(void)fd;
	(void)revents;

	drvc = (struct drv_context *)cb_data;

	tv.tv_sec = 0;
	tv.tv_usec = 0;

	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx,
		&tv, NULL);

	return TRUE;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct drv_context *drvc;
	int ret;

	drvc = sdi->driver->context;

	if ((ret = lls_start_acquisition(sdi)) < 0)
		return ret;

	std_session_send_df_header(sdi);

	return usb_source_add(sdi->session, drvc->sr_ctx, 100,
		receive_usb_data, drvc);
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	return lls_stop_acquisition(sdi);
}

static struct sr_dev_driver lecroy_logicstudio_driver_info = {
	.name = "lecroy-logicstudio",
	.longname = "LeCroy LogicStudio",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = std_dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.config_commit = config_commit,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(lecroy_logicstudio_driver_info);
Commit	Line	Data
c7b17bcb TS	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2015 Tilman Sauerbeck <tilman@code-monkey.de>
	5	* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
	6	*
	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.
	11	*
	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.
	16	*
	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/>.
	19	*/
	20
	21	#include <config.h>
	22	#include <stdbool.h>
	23	#include <stdint.h>
	24	#include <string.h>
	25	#include "protocol.h"
	26
	27	#define LOGICSTUDIO16_VID 0x05ff
	28	#define LOGICSTUDIO16_PID_LACK_FIRMWARE 0xa001
	29	#define LOGICSTUDIO16_PID_HAVE_FIRMWARE 0xa002
	30
	31	#define USB_INTERFACE 0
	32	#define USB_CONFIGURATION 0
	33	#define FX2_FIRMWARE "lecroy-logicstudio16-fx2lp.fw"
	34
	35	#define UNKNOWN_ADDRESS 0xff
	36	#define MAX_RENUM_DELAY_MS 3000
	37
b3fd0993 UH	38	#define NUM_CHANNELS 16
b3fd0993 UH	39
05199c0a	40	static const uint32_t drvopts[] = {
c7b17bcb	41	SR_CONF_LOGIC_ANALYZER,
05199c0a UH	42	};
	43
	44	static const uint32_t devopts[] = {
c7b17bcb TS	45	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	46	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
	47	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	48	};
	49
	50	static const int32_t trigger_matches[] = {
	51	SR_TRIGGER_ZERO,
	52	SR_TRIGGER_ONE,
	53	SR_TRIGGER_RISING,
	54	SR_TRIGGER_FALLING,
	55	SR_TRIGGER_EDGE,
	56	};
	57
	58	static const uint64_t samplerates[] = {
	59	SR_HZ(1000),
	60	SR_HZ(2500),
	61	SR_KHZ(5),
	62	SR_KHZ(10),
	63	SR_KHZ(25),
	64	SR_KHZ(50),
	65	SR_KHZ(100),
	66	SR_KHZ(250),
	67	SR_KHZ(500),
	68	SR_KHZ(1000),
	69	SR_KHZ(2500),
	70	SR_MHZ(5),
	71	SR_MHZ(10),
	72	SR_MHZ(25),
	73	SR_MHZ(50),
	74	SR_MHZ(100),
	75	SR_MHZ(250),
	76	SR_MHZ(500),
	77	};
	78
15a5bfe4 LPC	79	static struct sr_dev_inst create_device(struct sr_usb_dev_inst usb,
15a5bfe4 LPC	80	enum sr_dev_inst_status status, int64_t fw_updated)
c7b17bcb TS	81	{
	82	struct sr_dev_inst *sdi;
	83	struct dev_context *devc;
	84	char channel_name[8];
	85	int i;
	86
	87	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	88	sdi->status = status;
	89	sdi->vendor = g_strdup("LeCroy");
	90	sdi->model = g_strdup("LogicStudio16");
c7b17bcb TS	91	sdi->inst_type = SR_INST_USB;
	92	sdi->conn = usb;
	93
b3fd0993	94	for (i = 0; i < NUM_CHANNELS; i++) {
c7b17bcb TS	95	snprintf(channel_name, sizeof(channel_name), "D%i", i);
	96	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
	97	}
	98
	99	devc = g_malloc0(sizeof(struct dev_context));
	100
	101	sdi->priv = devc;
	102
	103	devc->fw_updated = fw_updated;
	104	devc->capture_ratio = 50;
	105
	106	lls_set_samplerate(sdi, SR_MHZ(500));
	107
	108	return sdi;
	109	}
	110
	111	static GSList scan(struct sr_dev_driver di, GSList *options)
	112	{
	113	struct sr_dev_inst *sdi;
	114	struct drv_context *drvc;
	115	struct sr_usb_dev_inst *usb;
	116	struct libusb_device_descriptor des;
	117	libusb_device **devlist;
	118	GSList *devices;
	119	char connection_id[64];
	120	size_t i;
	121	int r;
	122
	123	(void)options;
	124
	125	drvc = di->context;
c7b17bcb TS	126
	127	devices = NULL;
	128
	129	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	130
	131	for (i = 0; devlist[i]; i++) {
	132	libusb_get_device_descriptor(devlist[i], &des);
	133
	134	if (des.idVendor != LOGICSTUDIO16_VID)
	135	continue;
	136
	137	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	138
	139	usb = NULL;
	140
	141	switch (des.idProduct) {
	142	case LOGICSTUDIO16_PID_HAVE_FIRMWARE:
	143	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	144	libusb_get_device_address(devlist[i]), NULL);
	145
15a5bfe4	146	sdi = create_device(usb, SR_ST_INACTIVE, 0);
c7b17bcb TS	147	break;
	148	case LOGICSTUDIO16_PID_LACK_FIRMWARE:
	149	r = ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
	150	USB_CONFIGURATION, FX2_FIRMWARE);
	151	if (r != SR_OK) {
	152	/*
	153	* An error message has already been logged by
	154	* ezusb_upload_firmware().
	155	*/
	156	continue;
	157	}
	158
	159	/*
	160	* Put unknown as the address so that we know we still
	161	* need to get the proper address after the device
	162	* renumerates.
	163	*/
	164	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	165	UNKNOWN_ADDRESS, NULL);
	166
15a5bfe4	167	sdi = create_device(usb, SR_ST_INITIALIZING,
c7b17bcb TS	168	g_get_monotonic_time());
	169	break;
	170	default:
	171	break;
	172	}
	173
	174	/* Cannot handle this device? */
	175	if (!usb)
	176	continue;
	177
	178	sdi->connection_id = g_strdup(connection_id);
	179
c7b17bcb TS	180	devices = g_slist_append(devices, sdi);
	181	}
	182
	183	libusb_free_device_list(devlist, 1);
	184
15a5bfe4	185	return std_scan_complete(di, devices);
c7b17bcb TS	186	}
c7b17bcb TS	187
c7b17bcb TS	188	static int open_device(struct sr_dev_inst *sdi)
	189	{
	190	struct drv_context *drvc;
	191	struct sr_usb_dev_inst *usb;
	192	struct libusb_device_descriptor des;
	193	libusb_device **devlist;
	194	char connection_id[64];
	195	bool is_opened;
	196	size_t i;
	197	int r;
	198
c7b17bcb TS	199	drvc = sdi->driver->context;
	200	usb = sdi->conn;
	201
	202	is_opened = FALSE;
	203
	204	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	205
	206	for (i = 0; devlist[i]; i++) {
	207	libusb_get_device_descriptor(devlist[i], &des);
	208
	209	if (des.idVendor != LOGICSTUDIO16_VID \|\|
	210	des.idProduct != LOGICSTUDIO16_PID_HAVE_FIRMWARE)
	211	continue;
	212
	213	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	214
	215	/*
	216	* Check if this device is the same one that we associated
	217	* with this sdi in scan() and bail if it isn't.
	218	*/
	219	if (strcmp(sdi->connection_id, connection_id))
	220	continue;
	221
	222	r = libusb_open(devlist[i], &usb->devhdl);
	223
	224	if (r) {
	225	sr_err("Failed to open device: %s.",
	226	libusb_error_name(r));
	227	break;
	228	}
	229
	230	/* Fix up address after firmware upload. */
	231	if (usb->address == UNKNOWN_ADDRESS)
	232	usb->address = libusb_get_device_address(devlist[i]);
	233
	234	is_opened = TRUE;
	235
	236	break;
	237	}
	238
	239	libusb_free_device_list(devlist, 1);
	240
	241	if (!is_opened)
	242	return SR_ERR;
	243
	244	if ((r = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
	245	sr_err("Failed to claim interface: %s.",
	246	libusb_error_name(r));
	247	return SR_ERR;
	248	}
	249
	250	sdi->status = SR_ST_ACTIVE;
	251
	252	return SR_OK;
	253	}
	254
	255	static int dev_open(struct sr_dev_inst *sdi)
	256	{
c7b17bcb TS	257	struct dev_context *devc;
	258	int64_t timediff_us, timediff_ms;
	259	int ret;
	260
c7b17bcb TS	261	devc = sdi->priv;
c7b17bcb TS	262
c7b17bcb TS	263	/*
	264	* If we didn't need to upload FX2 firmware in scan(), open the device
	265	* right away. Otherwise, wait up to MAX_RENUM_DELAY_MS ms for the
	266	* FX2 to renumerate.
	267	*/
	268	if (!devc->fw_updated) {
	269	ret = open_device(sdi);
	270	} else {
	271	sr_info("Waiting for device to reset.");
	272
	273	/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
	274	g_usleep(300 * 1000);
	275	timediff_ms = 0;
	276
	277	while (timediff_ms < MAX_RENUM_DELAY_MS) {
	278	ret = open_device(sdi);
	279
	280	if (ret == SR_OK)
	281	break;
	282
	283	g_usleep(100 * 1000);
	284
	285	timediff_us = g_get_monotonic_time() - devc->fw_updated;
	286	timediff_ms = timediff_us / 1000;
	287
	288	sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
	289	}
	290
	291	if (ret != SR_OK) {
	292	sr_err("Device failed to renumerate.");
	293	return SR_ERR;
	294	}
	295
	296	sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
	297	}
	298
	299	if (ret != SR_OK) {
	300	sr_err("Unable to open device.");
	301	return ret;
	302	}
	303
	304	/*
	305	* Only allocate the sample buffer now since it's rather large.
	306	* Don't want to allocate it before we know we are going to use it.
	307	*/
	308	devc->fetched_samples = g_malloc(SAMPLE_BUF_SIZE);
	309
	310	devc->conv8to16 = g_malloc(CONV_8TO16_BUF_SIZE);
	311
	312	devc->intr_xfer = libusb_alloc_transfer(0);
	313	devc->bulk_xfer = libusb_alloc_transfer(0);
	314
	315	return SR_OK;
	316	}
	317
	318	static int dev_close(struct sr_dev_inst *sdi)
	319	{
	320	struct sr_usb_dev_inst *usb;
	321	struct dev_context *devc;
	322
	323	usb = sdi->conn;
	324	devc = sdi->priv;
	325
	326	g_free(devc->fetched_samples);
327	devc->fetched_samples = NULL;
328
329	g_free(devc->conv8to16);
330	devc->conv8to16 = NULL;
331
332	if (devc->intr_xfer) {
333	devc->intr_xfer->buffer = NULL; /* Points into devc. */
334	libusb_free_transfer(devc->intr_xfer);
335	devc->intr_xfer = NULL;
336	}
337
338	if (devc->bulk_xfer) {
339	devc->bulk_xfer->buffer = NULL; /* Points into devc. */
340	libusb_free_transfer(devc->bulk_xfer);
341	devc->bulk_xfer = NULL;
342	}
343
344	if (!usb->devhdl)
f1ba6b4b	345	return SR_ERR_BUG;
c7b17bcb TS	346
	347	libusb_release_interface(usb->devhdl, 0);
	348
	349	libusb_close(usb->devhdl);
	350	usb->devhdl = NULL;
	351
c7b17bcb TS	352	return SR_OK;
	353	}
	354
c7b17bcb TS	355	static int config_get(uint32_t key, GVariant **data,
	356	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	357	{
	358	struct dev_context *devc;
	359
	360	(void)cg;
	361
	362	if (!sdi)
	363	return SR_ERR_ARG;
	364
	365	devc = sdi->priv;
	366
	367	switch (key) {
	368	case SR_CONF_SAMPLERATE:
	369	*data = g_variant_new_uint64(lls_get_samplerate(sdi));
	370	break;
	371	case SR_CONF_CAPTURE_RATIO:
	372	*data = g_variant_new_uint64(devc->capture_ratio);
	373	break;
	374	default:
	375	return SR_ERR_NA;
	376	}
	377
	378	return SR_OK;
	379	}
	380
	381	static int config_set(uint32_t key, GVariant *data,
	382	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	383	{
	384	struct dev_context *devc;
	385
	386	(void)cg;
	387
	388	if (!sdi)
	389	return SR_ERR_ARG;
	390
	391	devc = sdi->priv;
	392
c7b17bcb TS	393	switch (key) {
	394	case SR_CONF_SAMPLERATE:
	395	return lls_set_samplerate(sdi, g_variant_get_uint64(data));
	396	case SR_CONF_CAPTURE_RATIO:
	397	devc->capture_ratio = g_variant_get_uint64(data);
c7b17bcb TS	398	break;
	399	default:
	400	return SR_ERR_NA;
	401	}
	402
	403	return SR_OK;
	404	}
	405
	406	static int config_list(uint32_t key, GVariant **data,
	407	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	408	{
c7b17bcb TS	409	switch (key) {
c7b17bcb TS	410	case SR_CONF_DEVICE_OPTIONS:
05199c0a	411	return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
c7b17bcb	412	case SR_CONF_SAMPLERATE:
53012da6	413	*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
c7b17bcb TS	414	break;
c7b17bcb TS	415	case SR_CONF_TRIGGER_MATCH:
53012da6	416	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
c7b17bcb TS	417	break;
	418	default:
	419	return SR_ERR_NA;
	420	}
	421
	422	return SR_OK;
	423	}
	424
	425	static int config_commit(const struct sr_dev_inst *sdi)
	426	{
	427	return lls_setup_acquisition(sdi);
	428	}
	429
	430	static int receive_usb_data(int fd, int revents, void *cb_data)
	431	{
	432	struct drv_context *drvc;
	433	struct timeval tv;
	434
	435	(void)fd;
	436	(void)revents;
	437
695dc859	438	drvc = (struct drv_context *)cb_data;
c7b17bcb TS	439
	440	tv.tv_sec = 0;
	441	tv.tv_usec = 0;
	442
	443	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx,
	444	&tv, NULL);
	445
	446	return TRUE;
	447	}
	448
695dc859	449	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
c7b17bcb TS	450	{
	451	struct drv_context *drvc;
	452	int ret;
	453
c7b17bcb TS	454	drvc = sdi->driver->context;
	455
	456	if ((ret = lls_start_acquisition(sdi)) < 0)
	457	return ret;
	458
bee2b016	459	std_session_send_df_header(sdi);
c7b17bcb TS	460
	461	return usb_source_add(sdi->session, drvc->sr_ctx, 100,
	462	receive_usb_data, drvc);
	463	}
	464
695dc859	465	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c7b17bcb	466	{
c7b17bcb TS	467	return lls_stop_acquisition(sdi);
	468	}
	469
dd5c48a6	470	static struct sr_dev_driver lecroy_logicstudio_driver_info = {
c7b17bcb TS	471	.name = "lecroy-logicstudio",
	472	.longname = "LeCroy LogicStudio",
	473	.api_version = 1,
c2fdcc25	474	.init = std_init,
700d6b64	475	.cleanup = std_cleanup,
c7b17bcb	476	.scan = scan,
c01bf34c	477	.dev_list = std_dev_list,
f778bf02	478	.dev_clear = std_dev_clear,
c7b17bcb TS	479	.config_get = config_get,
	480	.config_set = config_set,
	481	.config_list = config_list,
	482	.config_commit = config_commit,
	483	.dev_open = dev_open,
	484	.dev_close = dev_close,
	485	.dev_acquisition_start = dev_acquisition_start,
	486	.dev_acquisition_stop = dev_acquisition_stop,
	487	.context = NULL,
	488	};
dd5c48a6	489	SR_REGISTER_DEV_DRIVER(lecroy_logicstudio_driver_info);