[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

static const uint32_t devopts[] = {
	SR_CONF_LOGIC_ANALYZER,
	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 < 16; 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;

	if (sdi->status == SR_ST_ACTIVE)
		return SR_ERR;

	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;

	libusb_release_interface(usb->devhdl, 0);

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

	sdi->status = SR_ST_INACTIVE;

	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);
		if (devc->capture_ratio > 100)
			return SR_ERR;
		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)
{
	GVariantBuilder vb;
	GVariant *var;

	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts, ARRAY_SIZE(devopts),
				sizeof(uint32_t));
		break;
	case SR_CONF_SAMPLERATE:
		g_variant_builder_init(&vb, G_VARIANT_TYPE("a{sv}"));
		var = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
				samplerates, ARRAY_SIZE(samplerates),
				sizeof(uint64_t));
		g_variant_builder_add(&vb, "{sv}", "samplerates", var);
		*data = g_variant_builder_end(&vb);
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				trigger_matches, ARRAY_SIZE(trigger_matches),
				sizeof(int32_t));
		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,
	.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
	38	static const uint32_t devopts[] = {
	39	SR_CONF_LOGIC_ANALYZER,
	40	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	41	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
	42	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	43	};
	44
	45	static const int32_t trigger_matches[] = {
	46	SR_TRIGGER_ZERO,
	47	SR_TRIGGER_ONE,
	48	SR_TRIGGER_RISING,
	49	SR_TRIGGER_FALLING,
	50	SR_TRIGGER_EDGE,
	51	};
	52
	53	static const uint64_t samplerates[] = {
	54	SR_HZ(1000),
	55	SR_HZ(2500),
	56	SR_KHZ(5),
	57	SR_KHZ(10),
	58	SR_KHZ(25),
	59	SR_KHZ(50),
	60	SR_KHZ(100),
	61	SR_KHZ(250),
	62	SR_KHZ(500),
	63	SR_KHZ(1000),
	64	SR_KHZ(2500),
65	SR_MHZ(5),
66	SR_MHZ(10),
67	SR_MHZ(25),
68	SR_MHZ(50),
69	SR_MHZ(100),
70	SR_MHZ(250),
71	SR_MHZ(500),
72	};
73
15a5bfe4 LPC	74	static struct sr_dev_inst create_device(struct sr_usb_dev_inst usb,
15a5bfe4 LPC	75	enum sr_dev_inst_status status, int64_t fw_updated)
c7b17bcb TS	76	{
	77	struct sr_dev_inst *sdi;
	78	struct dev_context *devc;
	79	char channel_name[8];
	80	int i;
	81
	82	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	83	sdi->status = status;
	84	sdi->vendor = g_strdup("LeCroy");
	85	sdi->model = g_strdup("LogicStudio16");
c7b17bcb TS	86	sdi->inst_type = SR_INST_USB;
	87	sdi->conn = usb;
	88
	89	for (i = 0; i < 16; i++) {
	90	snprintf(channel_name, sizeof(channel_name), "D%i", i);
	91	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
	92	}
	93
	94	devc = g_malloc0(sizeof(struct dev_context));
	95
	96	sdi->priv = devc;
	97
	98	devc->fw_updated = fw_updated;
	99	devc->capture_ratio = 50;
	100
	101	lls_set_samplerate(sdi, SR_MHZ(500));
	102
	103	return sdi;
	104	}
	105
	106	static GSList scan(struct sr_dev_driver di, GSList *options)
	107	{
	108	struct sr_dev_inst *sdi;
	109	struct drv_context *drvc;
	110	struct sr_usb_dev_inst *usb;
	111	struct libusb_device_descriptor des;
	112	libusb_device **devlist;
	113	GSList *devices;
	114	char connection_id[64];
	115	size_t i;
	116	int r;
	117
	118	(void)options;
	119
	120	drvc = di->context;
c7b17bcb TS	121
	122	devices = NULL;
	123
	124	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	125
	126	for (i = 0; devlist[i]; i++) {
	127	libusb_get_device_descriptor(devlist[i], &des);
	128
	129	if (des.idVendor != LOGICSTUDIO16_VID)
	130	continue;
	131
	132	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	133
	134	usb = NULL;
	135
	136	switch (des.idProduct) {
	137	case LOGICSTUDIO16_PID_HAVE_FIRMWARE:
	138	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	139	libusb_get_device_address(devlist[i]), NULL);
	140
15a5bfe4	141	sdi = create_device(usb, SR_ST_INACTIVE, 0);
c7b17bcb TS	142	break;
	143	case LOGICSTUDIO16_PID_LACK_FIRMWARE:
	144	r = ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
	145	USB_CONFIGURATION, FX2_FIRMWARE);
	146	if (r != SR_OK) {
	147	/*
	148	* An error message has already been logged by
	149	* ezusb_upload_firmware().
	150	*/
	151	continue;
	152	}
	153
	154	/*
	155	* Put unknown as the address so that we know we still
	156	* need to get the proper address after the device
	157	* renumerates.
	158	*/
	159	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	160	UNKNOWN_ADDRESS, NULL);
	161
15a5bfe4	162	sdi = create_device(usb, SR_ST_INITIALIZING,
c7b17bcb TS	163	g_get_monotonic_time());
	164	break;
	165	default:
	166	break;
	167	}
	168
	169	/* Cannot handle this device? */
	170	if (!usb)
	171	continue;
	172
	173	sdi->connection_id = g_strdup(connection_id);
	174
c7b17bcb TS	175	devices = g_slist_append(devices, sdi);
	176	}
	177
	178	libusb_free_device_list(devlist, 1);
	179
15a5bfe4	180	return std_scan_complete(di, devices);
c7b17bcb TS	181	}
c7b17bcb TS	182
c7b17bcb TS	183	static int open_device(struct sr_dev_inst *sdi)
	184	{
	185	struct drv_context *drvc;
	186	struct sr_usb_dev_inst *usb;
	187	struct libusb_device_descriptor des;
	188	libusb_device **devlist;
	189	char connection_id[64];
	190	bool is_opened;
	191	size_t i;
	192	int r;
	193
	194	if (sdi->status == SR_ST_ACTIVE)
	195	return SR_ERR;
	196
	197	drvc = sdi->driver->context;
	198	usb = sdi->conn;
	199
	200	is_opened = FALSE;
	201
	202	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	203
	204	for (i = 0; devlist[i]; i++) {
	205	libusb_get_device_descriptor(devlist[i], &des);
	206
	207	if (des.idVendor != LOGICSTUDIO16_VID \|\|
	208	des.idProduct != LOGICSTUDIO16_PID_HAVE_FIRMWARE)
	209	continue;
	210
	211	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	212
	213	/*
	214	* Check if this device is the same one that we associated
	215	* with this sdi in scan() and bail if it isn't.
	216	*/
	217	if (strcmp(sdi->connection_id, connection_id))
	218	continue;
	219
	220	r = libusb_open(devlist[i], &usb->devhdl);
	221
	222	if (r) {
	223	sr_err("Failed to open device: %s.",
	224	libusb_error_name(r));
	225	break;
	226	}
	227
	228	/* Fix up address after firmware upload. */
	229	if (usb->address == UNKNOWN_ADDRESS)
	230	usb->address = libusb_get_device_address(devlist[i]);
	231
	232	is_opened = TRUE;
	233
	234	break;
	235	}
	236
	237	libusb_free_device_list(devlist, 1);
	238
	239	if (!is_opened)
	240	return SR_ERR;
	241
	242	if ((r = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
	243	sr_err("Failed to claim interface: %s.",
	244	libusb_error_name(r));
	245	return SR_ERR;
	246	}
247
248	sdi->status = SR_ST_ACTIVE;
249
250	return SR_OK;
251	}
252
253	static int dev_open(struct sr_dev_inst *sdi)
254	{
c7b17bcb TS	255	struct dev_context *devc;
	256	int64_t timediff_us, timediff_ms;
	257	int ret;
	258
c7b17bcb TS	259	devc = sdi->priv;
c7b17bcb TS	260
c7b17bcb TS	261	/*
	262	* If we didn't need to upload FX2 firmware in scan(), open the device
	263	* right away. Otherwise, wait up to MAX_RENUM_DELAY_MS ms for the
	264	* FX2 to renumerate.
	265	*/
	266	if (!devc->fw_updated) {
	267	ret = open_device(sdi);
	268	} else {
	269	sr_info("Waiting for device to reset.");
	270
	271	/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
	272	g_usleep(300 * 1000);
	273	timediff_ms = 0;
	274
	275	while (timediff_ms < MAX_RENUM_DELAY_MS) {
	276	ret = open_device(sdi);
	277
	278	if (ret == SR_OK)
	279	break;
	280
	281	g_usleep(100 * 1000);
	282
	283	timediff_us = g_get_monotonic_time() - devc->fw_updated;
	284	timediff_ms = timediff_us / 1000;
	285
	286	sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
	287	}
	288
	289	if (ret != SR_OK) {
	290	sr_err("Device failed to renumerate.");
	291	return SR_ERR;
	292	}
	293
	294	sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
	295	}
	296
	297	if (ret != SR_OK) {
	298	sr_err("Unable to open device.");
	299	return ret;
	300	}
	301
	302	/*
	303	* Only allocate the sample buffer now since it's rather large.
	304	* Don't want to allocate it before we know we are going to use it.
	305	*/
	306	devc->fetched_samples = g_malloc(SAMPLE_BUF_SIZE);
	307
	308	devc->conv8to16 = g_malloc(CONV_8TO16_BUF_SIZE);
	309
	310	devc->intr_xfer = libusb_alloc_transfer(0);
	311	devc->bulk_xfer = libusb_alloc_transfer(0);
	312
	313	return SR_OK;
	314	}
	315
	316	static int dev_close(struct sr_dev_inst *sdi)
	317	{
	318	struct sr_usb_dev_inst *usb;
	319	struct dev_context *devc;
	320
	321	usb = sdi->conn;
	322	devc = sdi->priv;
	323
	324	g_free(devc->fetched_samples);
325	devc->fetched_samples = NULL;
326
327	g_free(devc->conv8to16);
328	devc->conv8to16 = NULL;
329
330	if (devc->intr_xfer) {
331	devc->intr_xfer->buffer = NULL; /* Points into devc. */
332	libusb_free_transfer(devc->intr_xfer);
333	devc->intr_xfer = NULL;
334	}
335
336	if (devc->bulk_xfer) {
337	devc->bulk_xfer->buffer = NULL; /* Points into devc. */
338	libusb_free_transfer(devc->bulk_xfer);
339	devc->bulk_xfer = NULL;
340	}
341
342	if (!usb->devhdl)
343	return SR_ERR;
344
345	libusb_release_interface(usb->devhdl, 0);
346
347	libusb_close(usb->devhdl);
348	usb->devhdl = NULL;
349
350	sdi->status = SR_ST_INACTIVE;
351
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);
	398	if (devc->capture_ratio > 100)
	399	return SR_ERR;
	400	break;
	401	default:
	402	return SR_ERR_NA;
	403	}
	404
	405	return SR_OK;
	406	}
	407
	408	static int config_list(uint32_t key, GVariant **data,
	409	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	410	{
	411	GVariantBuilder vb;
	412	GVariant *var;
	413
	414	(void)sdi;
	415	(void)cg;
	416
	417	switch (key) {
	418	case SR_CONF_DEVICE_OPTIONS:
	419	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	420	devopts, ARRAY_SIZE(devopts),
	421	sizeof(uint32_t));
	422	break;
	423	case SR_CONF_SAMPLERATE:
	424	g_variant_builder_init(&vb, G_VARIANT_TYPE("a{sv}"));
	425	var = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	426	samplerates, ARRAY_SIZE(samplerates),
	427	sizeof(uint64_t));
	428	g_variant_builder_add(&vb, "{sv}", "samplerates", var);
	429	*data = g_variant_builder_end(&vb);
	430	break;
	431	case SR_CONF_TRIGGER_MATCH:
	432	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	433	trigger_matches, ARRAY_SIZE(trigger_matches),
	434	sizeof(int32_t));
	435	break;
	436	default:
	437	return SR_ERR_NA;
	438	}
	439
	440	return SR_OK;
	441	}
	442
	443	static int config_commit(const struct sr_dev_inst *sdi)
	444	{
	445	return lls_setup_acquisition(sdi);
	446	}
	447
	448	static int receive_usb_data(int fd, int revents, void *cb_data)
	449	{
	450	struct drv_context *drvc;
	451	struct timeval tv;
	452
	453	(void)fd;
	454	(void)revents;
	455
695dc859	456	drvc = (struct drv_context *)cb_data;
c7b17bcb TS	457
	458	tv.tv_sec = 0;
	459	tv.tv_usec = 0;
	460
	461	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx,
	462	&tv, NULL);
	463
	464	return TRUE;
	465	}
	466
695dc859	467	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
c7b17bcb TS	468	{
	469	struct drv_context *drvc;
	470	int ret;
	471
c7b17bcb TS	472	drvc = sdi->driver->context;
	473
	474	if ((ret = lls_start_acquisition(sdi)) < 0)
	475	return ret;
	476
bee2b016	477	std_session_send_df_header(sdi);
c7b17bcb TS	478
	479	return usb_source_add(sdi->session, drvc->sr_ctx, 100,
	480	receive_usb_data, drvc);
	481	}
	482
695dc859	483	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c7b17bcb	484	{
c7b17bcb TS	485	return lls_stop_acquisition(sdi);
	486	}
	487
dd5c48a6	488	static struct sr_dev_driver lecroy_logicstudio_driver_info = {
c7b17bcb TS	489	.name = "lecroy-logicstudio",
	490	.longname = "LeCroy LogicStudio",
	491	.api_version = 1,
c2fdcc25	492	.init = std_init,
700d6b64	493	.cleanup = std_cleanup,
c7b17bcb	494	.scan = scan,
c01bf34c	495	.dev_list = std_dev_list,
c7b17bcb TS	496	.config_get = config_get,
	497	.config_set = config_set,
	498	.config_list = config_list,
	499	.config_commit = config_commit,
	500	.dev_open = dev_open,
	501	.dev_close = dev_close,
	502	.dev_acquisition_start = dev_acquisition_start,
	503	.dev_acquisition_stop = dev_acquisition_stop,
	504	.context = NULL,
	505	};
dd5c48a6	506	SR_REGISTER_DEV_DRIVER(lecroy_logicstudio_driver_info);