[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_dev_driver *di,
		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->driver = di;
	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;
	drvc->instances = NULL;

	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(di, 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(di, 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);

		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);
	}

	libusb_free_device_list(devlist, 1);

	return 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;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	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;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	drvc = sdi->driver->context;

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

	std_session_send_df_header(sdi, LOG_PREFIX);

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

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	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
c7b17bcb TS	74	static struct sr_dev_inst create_device(struct sr_dev_driver di,
	75	struct sr_usb_dev_inst *usb, enum sr_dev_inst_status status,
	76	int64_t fw_updated)
	77	{
	78	struct sr_dev_inst *sdi;
	79	struct dev_context *devc;
	80	char channel_name[8];
	81	int i;
	82
	83	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	84	sdi->status = status;
	85	sdi->vendor = g_strdup("LeCroy");
	86	sdi->model = g_strdup("LogicStudio16");
	87	sdi->driver = di;
	88	sdi->inst_type = SR_INST_USB;
	89	sdi->conn = usb;
	90
	91	for (i = 0; i < 16; i++) {
	92	snprintf(channel_name, sizeof(channel_name), "D%i", i);
	93	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
	94	}
	95
	96	devc = g_malloc0(sizeof(struct dev_context));
	97
	98	sdi->priv = devc;
	99
	100	devc->fw_updated = fw_updated;
	101	devc->capture_ratio = 50;
	102
	103	lls_set_samplerate(sdi, SR_MHZ(500));
	104
	105	return sdi;
	106	}
	107
	108	static GSList scan(struct sr_dev_driver di, GSList *options)
	109	{
	110	struct sr_dev_inst *sdi;
	111	struct drv_context *drvc;
	112	struct sr_usb_dev_inst *usb;
	113	struct libusb_device_descriptor des;
	114	libusb_device **devlist;
	115	GSList *devices;
	116	char connection_id[64];
	117	size_t i;
	118	int r;
	119
	120	(void)options;
	121
	122	drvc = di->context;
	123	drvc->instances = NULL;
	124
	125	devices = NULL;
	126
	127	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	128
	129	for (i = 0; devlist[i]; i++) {
	130	libusb_get_device_descriptor(devlist[i], &des);
	131
	132	if (des.idVendor != LOGICSTUDIO16_VID)
	133	continue;
	134
	135	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	136
	137	usb = NULL;
138
139	switch (des.idProduct) {
140	case LOGICSTUDIO16_PID_HAVE_FIRMWARE:
141	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
142	libusb_get_device_address(devlist[i]), NULL);
143
144	sdi = create_device(di, usb, SR_ST_INACTIVE, 0);
145	break;
146	case LOGICSTUDIO16_PID_LACK_FIRMWARE:
147	r = ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
148	USB_CONFIGURATION, FX2_FIRMWARE);
149	if (r != SR_OK) {
150	/*
151	* An error message has already been logged by
152	* ezusb_upload_firmware().
153	*/
154	continue;
155	}
156
157	/*
158	* Put unknown as the address so that we know we still
159	* need to get the proper address after the device
160	* renumerates.
161	*/
162	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
163	UNKNOWN_ADDRESS, NULL);
164
165	sdi = create_device(di, usb, SR_ST_INITIALIZING,
166	g_get_monotonic_time());
167	break;
168	default:
169	break;
170	}
171
172	/* Cannot handle this device? */
173	if (!usb)
174	continue;
175
176	sdi->connection_id = g_strdup(connection_id);
177
178	drvc->instances = g_slist_append(drvc->instances, sdi);
179	devices = g_slist_append(devices, sdi);
180	}
181
182	libusb_free_device_list(devlist, 1);
183
184	return devices;
185	}
186
c7b17bcb TS	187	static int open_device(struct sr_dev_inst *sdi)
	188	{
	189	struct drv_context *drvc;
	190	struct sr_usb_dev_inst *usb;
	191	struct libusb_device_descriptor des;
	192	libusb_device **devlist;
	193	char connection_id[64];
	194	bool is_opened;
	195	size_t i;
	196	int r;
	197
	198	if (sdi->status == SR_ST_ACTIVE)
	199	return SR_ERR;
	200
	201	drvc = sdi->driver->context;
	202	usb = sdi->conn;
	203
	204	is_opened = FALSE;
	205
	206	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	207
	208	for (i = 0; devlist[i]; i++) {
	209	libusb_get_device_descriptor(devlist[i], &des);
	210
	211	if (des.idVendor != LOGICSTUDIO16_VID \|\|
	212	des.idProduct != LOGICSTUDIO16_PID_HAVE_FIRMWARE)
	213	continue;
	214
	215	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	216
	217	/*
	218	* Check if this device is the same one that we associated
	219	* with this sdi in scan() and bail if it isn't.
	220	*/
	221	if (strcmp(sdi->connection_id, connection_id))
	222	continue;
	223
	224	r = libusb_open(devlist[i], &usb->devhdl);
	225
	226	if (r) {
	227	sr_err("Failed to open device: %s.",
	228	libusb_error_name(r));
	229	break;
	230	}
	231
	232	/* Fix up address after firmware upload. */
	233	if (usb->address == UNKNOWN_ADDRESS)
	234	usb->address = libusb_get_device_address(devlist[i]);
	235
	236	is_opened = TRUE;
	237
	238	break;
	239	}
	240
	241	libusb_free_device_list(devlist, 1);
	242
	243	if (!is_opened)
	244	return SR_ERR;
	245
	246	if ((r = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
	247	sr_err("Failed to claim interface: %s.",
	248	libusb_error_name(r));
	249	return SR_ERR;
	250	}
251
252	sdi->status = SR_ST_ACTIVE;
253
254	return SR_OK;
255	}
256
257	static int dev_open(struct sr_dev_inst *sdi)
258	{
c7b17bcb TS	259	struct dev_context *devc;
	260	int64_t timediff_us, timediff_ms;
	261	int ret;
	262
c7b17bcb TS	263	devc = sdi->priv;
c7b17bcb TS	264
c7b17bcb TS	265	/*
	266	* If we didn't need to upload FX2 firmware in scan(), open the device
	267	* right away. Otherwise, wait up to MAX_RENUM_DELAY_MS ms for the
	268	* FX2 to renumerate.
	269	*/
	270	if (!devc->fw_updated) {
	271	ret = open_device(sdi);
	272	} else {
	273	sr_info("Waiting for device to reset.");
	274
	275	/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
	276	g_usleep(300 * 1000);
	277	timediff_ms = 0;
	278
	279	while (timediff_ms < MAX_RENUM_DELAY_MS) {
	280	ret = open_device(sdi);
	281
	282	if (ret == SR_OK)
	283	break;
	284
	285	g_usleep(100 * 1000);
	286
	287	timediff_us = g_get_monotonic_time() - devc->fw_updated;
	288	timediff_ms = timediff_us / 1000;
	289
	290	sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
	291	}
	292
	293	if (ret != SR_OK) {
	294	sr_err("Device failed to renumerate.");
	295	return SR_ERR;
	296	}
	297
	298	sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
	299	}
	300
	301	if (ret != SR_OK) {
	302	sr_err("Unable to open device.");
	303	return ret;
	304	}
	305
	306	/*
	307	* Only allocate the sample buffer now since it's rather large.
	308	* Don't want to allocate it before we know we are going to use it.
	309	*/
	310	devc->fetched_samples = g_malloc(SAMPLE_BUF_SIZE);
	311
	312	devc->conv8to16 = g_malloc(CONV_8TO16_BUF_SIZE);
	313
	314	devc->intr_xfer = libusb_alloc_transfer(0);
	315	devc->bulk_xfer = libusb_alloc_transfer(0);
	316
	317	return SR_OK;
	318	}
	319
	320	static int dev_close(struct sr_dev_inst *sdi)
	321	{
	322	struct sr_usb_dev_inst *usb;
	323	struct dev_context *devc;
	324
	325	usb = sdi->conn;
	326	devc = sdi->priv;
	327
	328	g_free(devc->fetched_samples);
329	devc->fetched_samples = NULL;
330
331	g_free(devc->conv8to16);
332	devc->conv8to16 = NULL;
333
334	if (devc->intr_xfer) {
335	devc->intr_xfer->buffer = NULL; /* Points into devc. */
336	libusb_free_transfer(devc->intr_xfer);
337	devc->intr_xfer = NULL;
338	}
339
340	if (devc->bulk_xfer) {
341	devc->bulk_xfer->buffer = NULL; /* Points into devc. */
342	libusb_free_transfer(devc->bulk_xfer);
343	devc->bulk_xfer = NULL;
344	}
345
346	if (!usb->devhdl)
347	return SR_ERR;
348
349	libusb_release_interface(usb->devhdl, 0);
350
351	libusb_close(usb->devhdl);
352	usb->devhdl = NULL;
353
354	sdi->status = SR_ST_INACTIVE;
355
356	return SR_OK;
357	}
358
c7b17bcb TS	359	static int config_get(uint32_t key, GVariant **data,
	360	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	361	{
	362	struct dev_context *devc;
	363
	364	(void)cg;
	365
	366	if (!sdi)
	367	return SR_ERR_ARG;
	368
	369	devc = sdi->priv;
	370
	371	switch (key) {
	372	case SR_CONF_SAMPLERATE:
	373	*data = g_variant_new_uint64(lls_get_samplerate(sdi));
	374	break;
	375	case SR_CONF_CAPTURE_RATIO:
	376	*data = g_variant_new_uint64(devc->capture_ratio);
	377	break;
	378	default:
	379	return SR_ERR_NA;
	380	}
	381
	382	return SR_OK;
	383	}
	384
	385	static int config_set(uint32_t key, GVariant *data,
	386	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	387	{
	388	struct dev_context *devc;
	389
	390	(void)cg;
	391
	392	if (!sdi)
	393	return SR_ERR_ARG;
	394
	395	devc = sdi->priv;
	396
	397	if (sdi->status != SR_ST_ACTIVE)
	398	return SR_ERR_DEV_CLOSED;
	399
	400	switch (key) {
	401	case SR_CONF_SAMPLERATE:
	402	return lls_set_samplerate(sdi, g_variant_get_uint64(data));
	403	case SR_CONF_CAPTURE_RATIO:
	404	devc->capture_ratio = g_variant_get_uint64(data);
	405	if (devc->capture_ratio > 100)
	406	return SR_ERR;
	407	break;
	408	default:
	409	return SR_ERR_NA;
	410	}
	411
	412	return SR_OK;
	413	}
	414
	415	static int config_list(uint32_t key, GVariant **data,
	416	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	417	{
	418	GVariantBuilder vb;
	419	GVariant *var;
	420
	421	(void)sdi;
	422	(void)cg;
423
424	switch (key) {
425	case SR_CONF_DEVICE_OPTIONS:
426	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
427	devopts, ARRAY_SIZE(devopts),
428	sizeof(uint32_t));
429	break;
430	case SR_CONF_SAMPLERATE:
431	g_variant_builder_init(&vb, G_VARIANT_TYPE("a{sv}"));
432	var = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
433	samplerates, ARRAY_SIZE(samplerates),
434	sizeof(uint64_t));
435	g_variant_builder_add(&vb, "{sv}", "samplerates", var);
436	*data = g_variant_builder_end(&vb);
437	break;
438	case SR_CONF_TRIGGER_MATCH:
439	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
440	trigger_matches, ARRAY_SIZE(trigger_matches),
441	sizeof(int32_t));
442	break;
443	default:
444	return SR_ERR_NA;
445	}
446
447	return SR_OK;
448	}
449
450	static int config_commit(const struct sr_dev_inst *sdi)
451	{
452	return lls_setup_acquisition(sdi);
453	}
454
455	static int receive_usb_data(int fd, int revents, void *cb_data)
456	{
457	struct drv_context *drvc;
458	struct timeval tv;
459
460	(void)fd;
461	(void)revents;
462
695dc859	463	drvc = (struct drv_context *)cb_data;
c7b17bcb TS	464
	465	tv.tv_sec = 0;
	466	tv.tv_usec = 0;
	467
	468	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx,
	469	&tv, NULL);
	470
	471	return TRUE;
	472	}
	473
695dc859	474	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
c7b17bcb TS	475	{
	476	struct drv_context *drvc;
	477	int ret;
	478
	479	if (sdi->status != SR_ST_ACTIVE)
	480	return SR_ERR_DEV_CLOSED;
	481
	482	drvc = sdi->driver->context;
	483
	484	if ((ret = lls_start_acquisition(sdi)) < 0)
	485	return ret;
	486
695dc859	487	std_session_send_df_header(sdi, LOG_PREFIX);
c7b17bcb TS	488
	489	return usb_source_add(sdi->session, drvc->sr_ctx, 100,
	490	receive_usb_data, drvc);
	491	}
	492
695dc859	493	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c7b17bcb	494	{
c7b17bcb TS	495	if (sdi->status != SR_ST_ACTIVE)
	496	return SR_ERR_DEV_CLOSED;
	497
	498	return lls_stop_acquisition(sdi);
	499	}
	500
dd5c48a6	501	static struct sr_dev_driver lecroy_logicstudio_driver_info = {
c7b17bcb TS	502	.name = "lecroy-logicstudio",
	503	.longname = "LeCroy LogicStudio",
	504	.api_version = 1,
c2fdcc25	505	.init = std_init,
700d6b64	506	.cleanup = std_cleanup,
c7b17bcb	507	.scan = scan,
c01bf34c	508	.dev_list = std_dev_list,
c7b17bcb TS	509	.config_get = config_get,
	510	.config_set = config_set,
	511	.config_list = config_list,
	512	.config_commit = config_commit,
	513	.dev_open = dev_open,
	514	.dev_close = dev_close,
	515	.dev_acquisition_start = dev_acquisition_start,
	516	.dev_acquisition_stop = dev_acquisition_stop,
	517	.context = NULL,
	518	};
dd5c48a6	519	SR_REGISTER_DEV_DRIVER(lecroy_logicstudio_driver_info);