[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),
};

SR_PRIV struct sr_dev_driver lecroy_logicstudio_driver_info;

static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

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 GSList *dev_list(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->context))->instances;
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear(di, NULL);
}

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 drv_context *drvc;
	struct dev_context *devc;
	int64_t timediff_us, timediff_ms;
	int ret;

	drvc = sdi->driver->context;
	devc = sdi->priv;

	if (!drvc) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	/*
	 * 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 cleanup(const struct sr_dev_driver *di)
{
	struct drv_context *drvc;
	int ret;

	drvc = di->context;

	ret = dev_clear(di);

	g_free(drvc);

	return ret;
}

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, void *cb_data)
{
	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(cb_data, 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, void *cb_data)
{
	(void)cb_data;

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

	return lls_stop_acquisition(sdi);
}

SR_PRIV struct sr_dev_driver lecroy_logicstudio_driver_info = {
	.name = "lecroy-logicstudio",
	.longname = "LeCroy LogicStudio",
	.api_version = 1,
	.init = init,
	.cleanup = cleanup,
	.scan = scan,
	.dev_list = dev_list,
	.dev_clear = 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,
};
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
74	SR_PRIV struct sr_dev_driver lecroy_logicstudio_driver_info;
75
76	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
77	{
78	return std_init(sr_ctx, di, LOG_PREFIX);
79	}
80
81	static struct sr_dev_inst create_device(struct sr_dev_driver di,
82	struct sr_usb_dev_inst *usb, enum sr_dev_inst_status status,
83	int64_t fw_updated)
84	{
85	struct sr_dev_inst *sdi;
86	struct dev_context *devc;
87	char channel_name[8];
88	int i;
89
90	sdi = g_malloc0(sizeof(struct sr_dev_inst));
91	sdi->status = status;
92	sdi->vendor = g_strdup("LeCroy");
93	sdi->model = g_strdup("LogicStudio16");
94	sdi->driver = di;
95	sdi->inst_type = SR_INST_USB;
96	sdi->conn = usb;
97
98	for (i = 0; i < 16; i++) {
99	snprintf(channel_name, sizeof(channel_name), "D%i", i);
100	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
101	}
102
103	devc = g_malloc0(sizeof(struct dev_context));
104
105	sdi->priv = devc;
106
107	devc->fw_updated = fw_updated;
108	devc->capture_ratio = 50;
109
110	lls_set_samplerate(sdi, SR_MHZ(500));
111
112	return sdi;
113	}
114
115	static GSList scan(struct sr_dev_driver di, GSList *options)
116	{
117	struct sr_dev_inst *sdi;
118	struct drv_context *drvc;
119	struct sr_usb_dev_inst *usb;
120	struct libusb_device_descriptor des;
121	libusb_device **devlist;
122	GSList *devices;
123	char connection_id[64];
124	size_t i;
125	int r;
126
127	(void)options;
128
129	drvc = di->context;
130	drvc->instances = NULL;
131
132	devices = NULL;
133
134	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
135
136	for (i = 0; devlist[i]; i++) {
137	libusb_get_device_descriptor(devlist[i], &des);
138
139	if (des.idVendor != LOGICSTUDIO16_VID)
140	continue;
141
142	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
143
144	usb = NULL;
145
146	switch (des.idProduct) {
147	case LOGICSTUDIO16_PID_HAVE_FIRMWARE:
148	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
149	libusb_get_device_address(devlist[i]), NULL);
150
151	sdi = create_device(di, usb, SR_ST_INACTIVE, 0);
152	break;
153	case LOGICSTUDIO16_PID_LACK_FIRMWARE:
154	r = ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
155	USB_CONFIGURATION, FX2_FIRMWARE);
156	if (r != SR_OK) {
157	/*
158	* An error message has already been logged by
159	* ezusb_upload_firmware().
160	*/
161	continue;
162	}
163
164	/*
165	* Put unknown as the address so that we know we still
166	* need to get the proper address after the device
167	* renumerates.
168	*/
169	usb = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
170	UNKNOWN_ADDRESS, NULL);
171
172	sdi = create_device(di, usb, SR_ST_INITIALIZING,
173	g_get_monotonic_time());
174	break;
175	default:
176	break;
177	}
178
179	/* Cannot handle this device? */
180	if (!usb)
181	continue;
182
183	sdi->connection_id = g_strdup(connection_id);
184
185	drvc->instances = g_slist_append(drvc->instances, sdi);
186	devices = g_slist_append(devices, sdi);
187	}
188
189	libusb_free_device_list(devlist, 1);
190
191	return devices;
192	}
193
194	static GSList dev_list(const struct sr_dev_driver di)
195	{
196	return ((struct drv_context *)(di->context))->instances;
197	}
198
199	static int dev_clear(const struct sr_dev_driver *di)
200	{
201	return std_dev_clear(di, NULL);
202	}
203
204	static int open_device(struct sr_dev_inst *sdi)
205	{
206	struct drv_context *drvc;
207	struct sr_usb_dev_inst *usb;
208	struct libusb_device_descriptor des;
209	libusb_device **devlist;
210	char connection_id[64];
211	bool is_opened;
212	size_t i;
213	int r;
214
215	if (sdi->status == SR_ST_ACTIVE)
216	return SR_ERR;
217
218	drvc = sdi->driver->context;
219	usb = sdi->conn;
220
221	is_opened = FALSE;
222
223	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
224
225	for (i = 0; devlist[i]; i++) {
226	libusb_get_device_descriptor(devlist[i], &des);
227
228	if (des.idVendor != LOGICSTUDIO16_VID \|\|
229	des.idProduct != LOGICSTUDIO16_PID_HAVE_FIRMWARE)
230	continue;
231
232	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
233
234	/*
235	* Check if this device is the same one that we associated
236	* with this sdi in scan() and bail if it isn't.
237	*/
238	if (strcmp(sdi->connection_id, connection_id))
239	continue;
240
241	r = libusb_open(devlist[i], &usb->devhdl);
242
243	if (r) {
244	sr_err("Failed to open device: %s.",
245	libusb_error_name(r));
246	break;
247	}
248
249	/* Fix up address after firmware upload. */
250	if (usb->address == UNKNOWN_ADDRESS)
251	usb->address = libusb_get_device_address(devlist[i]);
252
253	is_opened = TRUE;
254
255	break;
256	}
257
258	libusb_free_device_list(devlist, 1);
259
260	if (!is_opened)
261	return SR_ERR;
262
263	if ((r = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
264	sr_err("Failed to claim interface: %s.",
265	libusb_error_name(r));
266	return SR_ERR;
267	}
268
269	sdi->status = SR_ST_ACTIVE;
270
271	return SR_OK;
272	}
273
274	static int dev_open(struct sr_dev_inst *sdi)
275	{
276	struct drv_context *drvc;
277	struct dev_context *devc;
278	int64_t timediff_us, timediff_ms;
279	int ret;
280
281	drvc = sdi->driver->context;
282	devc = sdi->priv;
283
284	if (!drvc) {
285	sr_err("Driver was not initialized.");
286	return SR_ERR;
287	}
288
289	/*
290	* If we didn't need to upload FX2 firmware in scan(), open the device
291	* right away. Otherwise, wait up to MAX_RENUM_DELAY_MS ms for the
292	* FX2 to renumerate.
293	*/
294	if (!devc->fw_updated) {
295	ret = open_device(sdi);
296	} else {
297	sr_info("Waiting for device to reset.");
298
299	/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
300	g_usleep(300 * 1000);
301	timediff_ms = 0;
302
303	while (timediff_ms < MAX_RENUM_DELAY_MS) {
304	ret = open_device(sdi);
305
306	if (ret == SR_OK)
307	break;
308
309	g_usleep(100 * 1000);
310
311	timediff_us = g_get_monotonic_time() - devc->fw_updated;
312	timediff_ms = timediff_us / 1000;
313
314	sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
315	}
316
317	if (ret != SR_OK) {
318	sr_err("Device failed to renumerate.");
319	return SR_ERR;
320	}
321
322	sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
323	}
324
325	if (ret != SR_OK) {
326	sr_err("Unable to open device.");
327	return ret;
328	}
329
330	/*
331	* Only allocate the sample buffer now since it's rather large.
332	* Don't want to allocate it before we know we are going to use it.
333	*/
334	devc->fetched_samples = g_malloc(SAMPLE_BUF_SIZE);
335
336	devc->conv8to16 = g_malloc(CONV_8TO16_BUF_SIZE);
337
338	devc->intr_xfer = libusb_alloc_transfer(0);
339	devc->bulk_xfer = libusb_alloc_transfer(0);
340
341	return SR_OK;
342	}
343
344	static int dev_close(struct sr_dev_inst *sdi)
345	{
346	struct sr_usb_dev_inst *usb;
347	struct dev_context *devc;
348
349	usb = sdi->conn;
350	devc = sdi->priv;
351
352	g_free(devc->fetched_samples);
353	devc->fetched_samples = NULL;
354
355	g_free(devc->conv8to16);
356	devc->conv8to16 = NULL;
357
358	if (devc->intr_xfer) {
359	devc->intr_xfer->buffer = NULL; /* Points into devc. */
360	libusb_free_transfer(devc->intr_xfer);
361	devc->intr_xfer = NULL;
362	}
363
364	if (devc->bulk_xfer) {
365	devc->bulk_xfer->buffer = NULL; /* Points into devc. */
366	libusb_free_transfer(devc->bulk_xfer);
367	devc->bulk_xfer = NULL;
368	}
369
370	if (!usb->devhdl)
371	return SR_ERR;
372
373	libusb_release_interface(usb->devhdl, 0);
374
375	libusb_close(usb->devhdl);
376	usb->devhdl = NULL;
377
378	sdi->status = SR_ST_INACTIVE;
379
380	return SR_OK;
381	}
382
383	static int cleanup(const struct sr_dev_driver *di)
384	{
385	struct drv_context *drvc;
386	int ret;
387
388	drvc = di->context;
389
390	ret = dev_clear(di);
391
392	g_free(drvc);
393
394	return ret;
395	}
396
397	static int config_get(uint32_t key, GVariant **data,
398	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
399	{
400	struct dev_context *devc;
401
402	(void)cg;
403
404	if (!sdi)
405	return SR_ERR_ARG;
406
407	devc = sdi->priv;
408
409	switch (key) {
410	case SR_CONF_SAMPLERATE:
411	*data = g_variant_new_uint64(lls_get_samplerate(sdi));
412	break;
413	case SR_CONF_CAPTURE_RATIO:
414	*data = g_variant_new_uint64(devc->capture_ratio);
415	break;
416	default:
417	return SR_ERR_NA;
418	}
419
420	return SR_OK;
421	}
422
423	static int config_set(uint32_t key, GVariant *data,
424	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
425	{
426	struct dev_context *devc;
427
428	(void)cg;
429
430	if (!sdi)
431	return SR_ERR_ARG;
432
433	devc = sdi->priv;
434
435	if (sdi->status != SR_ST_ACTIVE)
436	return SR_ERR_DEV_CLOSED;
437
438	switch (key) {
439	case SR_CONF_SAMPLERATE:
440	return lls_set_samplerate(sdi, g_variant_get_uint64(data));
441	case SR_CONF_CAPTURE_RATIO:
442	devc->capture_ratio = g_variant_get_uint64(data);
443	if (devc->capture_ratio > 100)
444	return SR_ERR;
445	break;
446	default:
447	return SR_ERR_NA;
448	}
449
450	return SR_OK;
451	}
452
453	static int config_list(uint32_t key, GVariant **data,
454	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
455	{
456	GVariantBuilder vb;
457	GVariant *var;
458
459	(void)sdi;
460	(void)cg;
461
462	switch (key) {
463	case SR_CONF_DEVICE_OPTIONS:
464	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
465	devopts, ARRAY_SIZE(devopts),
466	sizeof(uint32_t));
467	break;
468	case SR_CONF_SAMPLERATE:
469	g_variant_builder_init(&vb, G_VARIANT_TYPE("a{sv}"));
470	var = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
471	samplerates, ARRAY_SIZE(samplerates),
472	sizeof(uint64_t));
473	g_variant_builder_add(&vb, "{sv}", "samplerates", var);
474	*data = g_variant_builder_end(&vb);
475	break;
476	case SR_CONF_TRIGGER_MATCH:
477	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
478	trigger_matches, ARRAY_SIZE(trigger_matches),
479	sizeof(int32_t));
480	break;
481	default:
482	return SR_ERR_NA;
483	}
484
485	return SR_OK;
486	}
487
488	static int config_commit(const struct sr_dev_inst *sdi)
489	{
490	return lls_setup_acquisition(sdi);
491	}
492
493	static int receive_usb_data(int fd, int revents, void *cb_data)
494	{
495	struct drv_context *drvc;
496	struct timeval tv;
497
498	(void)fd;
499	(void)revents;
500
501	drvc = (struct drv_context *) cb_data;
502
503	tv.tv_sec = 0;
504	tv.tv_usec = 0;
505
506	libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx,
507	&tv, NULL);
508
509	return TRUE;
510	}
511
512	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
513	{
514	struct drv_context *drvc;
515	int ret;
516
517	if (sdi->status != SR_ST_ACTIVE)
518	return SR_ERR_DEV_CLOSED;
519
520	drvc = sdi->driver->context;
521
522	if ((ret = lls_start_acquisition(sdi)) < 0)
523	return ret;
524
525	std_session_send_df_header(cb_data, LOG_PREFIX);
526
527	return usb_source_add(sdi->session, drvc->sr_ctx, 100,
528	receive_usb_data, drvc);
529	}
530
531	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
532	{
533	(void)cb_data;
534
535	if (sdi->status != SR_ST_ACTIVE)
536	return SR_ERR_DEV_CLOSED;
537
538	return lls_stop_acquisition(sdi);
539	}
540
541	SR_PRIV struct sr_dev_driver lecroy_logicstudio_driver_info = {
542	.name = "lecroy-logicstudio",
543	.longname = "LeCroy LogicStudio",
544	.api_version = 1,
545	.init = init,
546	.cleanup = cleanup,
547	.scan = scan,
548	.dev_list = dev_list,
549	.dev_clear = dev_clear,
550	.config_get = config_get,
551	.config_set = config_set,
552	.config_list = config_list,
553	.config_commit = config_commit,
554	.dev_open = dev_open,
555	.dev_close = dev_close,
556	.dev_acquisition_start = dev_acquisition_start,
557	.dev_acquisition_stop = dev_acquisition_stop,
558	.context = NULL,
559	};