[libsigrok.git] / src / hardware / saleae-logic-pro / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2017 Jan Luebbe <jluebbe@lasnet.de>
 *
 * 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 <glib.h>
#include <string.h>
#include "protocol.h"

#define BUF_COUNT 8
#define BUF_SIZE (16 * 1024)
#define BUF_TIMEOUT (1000 * 1000)

SR_PRIV struct sr_dev_driver saleae_logic_pro_driver_info;

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

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
};

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

static const char *channel_names[] = {
	"0", "1", "2", "3", "4", "5", "6", "7",
	"8", "9", "10", "11", "12", "13", "14", "15",
};

static const uint64_t samplerates[] = {
	SR_MHZ(1),
	SR_MHZ(2),
	SR_KHZ(2500),
	SR_MHZ(10),
	SR_MHZ(25),
	SR_MHZ(50),
};

static gboolean scan_firmware(libusb_device *dev)
{
	struct libusb_device_descriptor des;
	struct libusb_device_handle *hdl;
	gboolean ret;
	unsigned char strdesc[64];

	hdl = NULL;
	ret = FALSE;

	libusb_get_device_descriptor(dev, &des);

	if (libusb_open(dev, &hdl) != 0)
		goto out;

	if (libusb_get_string_descriptor_ascii(hdl,
		des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
		goto out;
	if (strcmp((const char *)strdesc, "Saleae"))
		goto out;

	if (libusb_get_string_descriptor_ascii(hdl,
		des.iProduct, strdesc, sizeof(strdesc)) < 0)
		goto out;
	if (strcmp((const char *)strdesc, "Logic Pro"))
		goto out;

	ret = TRUE;

out:
	if (hdl)
		libusb_close(hdl);

	return ret;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	GSList *devices, *conn_devices;
	libusb_device **devlist;
	struct libusb_device_descriptor des;
	const char *conn;
	char connection_id[64];

	devices = NULL;
	drvc = di->context;
	drvc->instances = NULL;

	conn = NULL;
	for (GSList *l = options; l; l = l->next) {
		struct sr_config *src = l->data;

		switch (src->key) {
		case SR_CONF_CONN:
			conn = g_variant_get_string(src->data, NULL);
			break;
		}
	}

	if (conn)
		conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	else
		conn_devices = NULL;

	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	for (unsigned int i = 0; devlist[i]; i++) {
		if (conn) {
			struct sr_usb_dev_inst *usb = NULL;
			GSList *l;

			for (l = conn_devices; l; l = l->next) {
				usb = l->data;
				if (usb->bus == libusb_get_bus_number(devlist[i])
				    && usb->address == libusb_get_device_address(devlist[i]))
					break;
			}
			if (!l)
				/* This device matched none of the ones that
				 * matched the conn specification. */
				continue;
		}

		libusb_get_device_descriptor(devlist[i], &des);

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

		if (des.idVendor != 0x21a9 || des.idProduct != 0x1006)
			continue;

		if (!scan_firmware(devlist[i])) {
			sr_err("Found a Logic Pro device, but firmware is not loaded (use Saleae application).");
			continue;
		}

		sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->status = SR_ST_INITIALIZING;
		sdi->vendor = g_strdup("Saleae");
		sdi->model = g_strdup("Logic Pro 16");
		sdi->connection_id = g_strdup(connection_id);

		for (unsigned int j = 0; j < ARRAY_SIZE(channel_names); j++)
			sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
				       channel_names[j]);

		sr_dbg("Found a Logic Pro 16 device.");
		sdi->status = SR_ST_INACTIVE;
		sdi->inst_type = SR_INST_USB;
		sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
						libusb_get_device_address(devlist[i]), NULL);

		devc = g_malloc0(sizeof(struct dev_context));
		sdi->priv = devc;
		devices = g_slist_append(devices, sdi);

	}
	libusb_free_device_list(devlist, 1);
	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);

	return std_scan_complete(di, devices);
}

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

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di = sdi->driver;
	struct drv_context *drvc = di->context;
	struct dev_context *devc = sdi->priv;
	struct sr_usb_dev_inst *usb = sdi->conn;
	int ret;

	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
		return SR_ERR;

	if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
		sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	/* Configure default samplerate. */
	if (devc->dig_samplerate == 0)
		devc->dig_samplerate = samplerates[3];

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	sr_usb_close(sdi->conn);

	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 sr_usb_dev_inst *usb;
	struct dev_context *devc;
	int ret;

	(void)cg;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_CONN:
		if (!sdi || !sdi->conn)
			return SR_ERR_ARG;
		usb = sdi->conn;
		*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
		break;
	case SR_CONF_SAMPLERATE:
		if (!sdi)
			return SR_ERR;
		devc = sdi->priv;
		*data = g_variant_new_uint64(devc->dig_samplerate);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

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;
	int ret;

	(void)cg;

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_SAMPLERATE:
		devc->dig_samplerate = g_variant_get_uint64(data);
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(uint32_t key, GVariant **data,
		       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	GVariant *gvar;
	GVariantBuilder gvb;
	int ret;

	(void)sdi;
	(void)cg;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
			scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		if (!sdi) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		} else {
			*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(&gvb, G_VARIANT_TYPE("a{sv}"));
		gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
			samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static void dev_acquisition_abort(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	unsigned int i;

	for (i = 0; i < devc->num_transfers; i++) {
		if (devc->transfers[i])
			libusb_cancel_transfer(devc->transfers[i]);
	}
}

static int dev_acquisition_handle(int fd, int revents, void *cb_data)
{
	struct sr_dev_inst *sdi = cb_data;
	struct drv_context *drvc = sdi->driver->context;
	struct timeval tv = ALL_ZERO;

	(void)fd;
	(void)revents;

	libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);

	return TRUE;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	struct drv_context *drvc = sdi->driver->context;
	struct libusb_transfer *transfer;
	struct sr_usb_dev_inst *usb;
	uint8_t *buf;
	unsigned int i, ret;

	ret = saleae_logic_pro_init(sdi);
	if (ret != SR_OK)
		return ret;

	ret = saleae_logic_pro_prepare(sdi);
	if (ret != SR_OK)
		return ret;

	usb = sdi->conn;

	devc->conv_buffer = g_malloc(CONV_BUFFER_SIZE);

	devc->num_transfers = BUF_COUNT;
	devc->transfers = g_malloc0(sizeof(*devc->transfers) * BUF_COUNT);
	for (i = 0; i < devc->num_transfers; i++) {
		buf = g_malloc(BUF_SIZE);
		transfer = libusb_alloc_transfer(0);
		libusb_fill_bulk_transfer(transfer, usb->devhdl,
			2 | LIBUSB_ENDPOINT_IN, buf, BUF_SIZE,
			saleae_logic_pro_receive_data, (void *)sdi, BUF_TIMEOUT);
		if ((ret = libusb_submit_transfer(transfer)) != 0) {
			sr_err("Failed to submit transfer: %s.",
			       libusb_error_name(ret));
			libusb_free_transfer(transfer);
			g_free(buf);
			dev_acquisition_abort(sdi);
			return SR_ERR;
		}
		devc->transfers[i] = transfer;
		devc->submitted_transfers++;
	}

	usb_source_add(sdi->session, drvc->sr_ctx, BUF_TIMEOUT, dev_acquisition_handle, (void *)sdi);

	std_session_send_df_header(sdi);

	saleae_logic_pro_start(sdi);
	if (ret != SR_OK)
		return ret;

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	struct drv_context *drvc = sdi->driver->context;

	saleae_logic_pro_stop(sdi);

	std_session_send_df_end(sdi);

	usb_source_remove(sdi->session, drvc->sr_ctx);

	g_free(devc->conv_buffer);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver saleae_logic_pro_driver_info = {
	.name = "saleae-logic-pro",
	.longname = "Saleae Logic Pro",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.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(saleae_logic_pro_driver_info);
Commit	Line	Data
a8e913c4 JL	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2017 Jan Luebbe <jluebbe@lasnet.de>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <config.h>
ca7d19b5 JL	21	#include <glib.h>
ca7d19b5 JL	22	#include <string.h>
a8e913c4 JL	23	#include "protocol.h"
a8e913c4 JL	24
bb0c5271 UH	25	#define BUF_COUNT 8
	26	#define BUF_SIZE (16 * 1024)
	27	#define BUF_TIMEOUT (1000 * 1000)
ca7d19b5	28
b6189f7c	29	SR_PRIV struct sr_dev_driver saleae_logic_pro_driver_info;
a8e913c4	30
ca7d19b5 JL	31	static const uint32_t drvopts[] = {
	32	SR_CONF_LOGIC_ANALYZER,
	33	};
	34
	35	static const uint32_t scanopts[] = {
	36	SR_CONF_CONN,
	37	};
	38
	39	static const uint32_t devopts[] = {
	40	SR_CONF_CONTINUOUS,
	41	SR_CONF_CONN \| SR_CONF_GET,
	42	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	43	};
	44
	45	static const char *channel_names[] = {
	46	"0", "1", "2", "3", "4", "5", "6", "7",
	47	"8", "9", "10", "11", "12", "13", "14", "15",
	48	};
	49
	50	static const uint64_t samplerates[] = {
	51	SR_MHZ(1),
	52	SR_MHZ(2),
	53	SR_KHZ(2500),
	54	SR_MHZ(10),
	55	SR_MHZ(25),
	56	SR_MHZ(50),
	57	};
	58
	59	static gboolean scan_firmware(libusb_device *dev)
	60	{
	61	struct libusb_device_descriptor des;
	62	struct libusb_device_handle *hdl;
	63	gboolean ret;
	64	unsigned char strdesc[64];
	65
	66	hdl = NULL;
	67	ret = FALSE;
	68
	69	libusb_get_device_descriptor(dev, &des);
	70
	71	if (libusb_open(dev, &hdl) != 0)
	72	goto out;
	73
	74	if (libusb_get_string_descriptor_ascii(hdl,
	75	des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
	76	goto out;
	77	if (strcmp((const char *)strdesc, "Saleae"))
	78	goto out;
	79
	80	if (libusb_get_string_descriptor_ascii(hdl,
	81	des.iProduct, strdesc, sizeof(strdesc)) < 0)
	82	goto out;
	83	if (strcmp((const char *)strdesc, "Logic Pro"))
	84	goto out;
	85
	86	ret = TRUE;
	87
	88	out:
	89	if (hdl)
	90	libusb_close(hdl);
	91
	92	return ret;
	93	}
	94
a8e913c4 JL	95	static GSList scan(struct sr_dev_driver di, GSList *options)
	96	{
	97	struct drv_context *drvc;
ca7d19b5 JL	98	struct dev_context *devc;
	99	struct sr_dev_inst *sdi;
	100	GSList devices, conn_devices;
	101	libusb_device **devlist;
	102	struct libusb_device_descriptor des;
	103	const char *conn;
	104	char connection_id[64];
a8e913c4 JL	105
	106	devices = NULL;
	107	drvc = di->context;
	108	drvc->instances = NULL;
	109
ca7d19b5 JL	110	conn = NULL;
	111	for (GSList *l = options; l; l = l->next) {
	112	struct sr_config *src = l->data;
	113
	114	switch (src->key) {
	115	case SR_CONF_CONN:
	116	conn = g_variant_get_string(src->data, NULL);
	117	break;
	118	}
	119	}
	120
	121	if (conn)
	122	conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	123	else
	124	conn_devices = NULL;
	125
	126	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	127	for (unsigned int i = 0; devlist[i]; i++) {
	128	if (conn) {
	129	struct sr_usb_dev_inst *usb = NULL;
	130	GSList *l;
	131
	132	for (l = conn_devices; l; l = l->next) {
	133	usb = l->data;
	134	if (usb->bus == libusb_get_bus_number(devlist[i])
	135	&& usb->address == libusb_get_device_address(devlist[i]))
	136	break;
	137	}
	138	if (!l)
	139	/* This device matched none of the ones that
	140	* matched the conn specification. */
	141	continue;
	142	}
	143
	144	libusb_get_device_descriptor(devlist[i], &des);
	145
	146	usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
	147
	148	if (des.idVendor != 0x21a9 \|\| des.idProduct != 0x1006)
	149	continue;
	150
	151	if (!scan_firmware(devlist[i])) {
	152	sr_err("Found a Logic Pro device, but firmware is not loaded (use Saleae application).");
	153	continue;
	154	}
	155
	156	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	157	sdi->status = SR_ST_INITIALIZING;
	158	sdi->vendor = g_strdup("Saleae");
	159	sdi->model = g_strdup("Logic Pro 16");
	160	sdi->connection_id = g_strdup(connection_id);
	161
	162	for (unsigned int j = 0; j < ARRAY_SIZE(channel_names); j++)
	163	sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
	164	channel_names[j]);
	165
	166	sr_dbg("Found a Logic Pro 16 device.");
	167	sdi->status = SR_ST_INACTIVE;
	168	sdi->inst_type = SR_INST_USB;
	169	sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	170	libusb_get_device_address(devlist[i]), NULL);
	171
	172	devc = g_malloc0(sizeof(struct dev_context));
	173	sdi->priv = devc;
174	devices = g_slist_append(devices, sdi);
175
176	}
177	libusb_free_device_list(devlist, 1);
178	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
a8e913c4	179
ca7d19b5	180	return std_scan_complete(di, devices);
a8e913c4 JL	181	}
	182
	183	static int dev_clear(const struct sr_dev_driver *di)
	184	{
	185	return std_dev_clear(di, NULL);
	186	}
	187
	188	static int dev_open(struct sr_dev_inst *sdi)
	189	{
ca7d19b5 JL	190	struct sr_dev_driver *di = sdi->driver;
	191	struct drv_context *drvc = di->context;
	192	struct dev_context *devc = sdi->priv;
	193	struct sr_usb_dev_inst *usb = sdi->conn;
	194	int ret;
a8e913c4	195
ca7d19b5 JL	196	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	197	return SR_ERR;
	198
	199	if ((ret = libusb_claim_interface(usb->devhdl, 0))) {
	200	sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
	201	return SR_ERR;
	202	}
	203
bb0c5271	204	/* Configure default samplerate. */
ca7d19b5 JL	205	if (devc->dig_samplerate == 0)
ca7d19b5 JL	206	devc->dig_samplerate = samplerates[3];
a8e913c4	207
a8e913c4 JL	208	return SR_OK;
	209	}
	210
	211	static int dev_close(struct sr_dev_inst *sdi)
	212	{
f1ba6b4b	213	sr_usb_close(sdi->conn);
a8e913c4 JL	214
	215	return SR_OK;
	216	}
	217
	218	static int config_get(uint32_t key, GVariant **data,
ca7d19b5	219	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
a8e913c4	220	{
ca7d19b5 JL	221	struct sr_usb_dev_inst *usb;
ca7d19b5 JL	222	struct dev_context *devc;
a8e913c4 JL	223	int ret;
a8e913c4 JL	224
a8e913c4 JL	225	(void)cg;
	226
	227	ret = SR_OK;
	228	switch (key) {
ca7d19b5 JL	229	case SR_CONF_CONN:
	230	if (!sdi \|\| !sdi->conn)
	231	return SR_ERR_ARG;
	232	usb = sdi->conn;
	233	*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
	234	break;
	235	case SR_CONF_SAMPLERATE:
	236	if (!sdi)
	237	return SR_ERR;
	238	devc = sdi->priv;
	239	*data = g_variant_new_uint64(devc->dig_samplerate);
	240	break;
a8e913c4 JL	241	default:
	242	return SR_ERR_NA;
	243	}
	244
	245	return ret;
	246	}
	247
	248	static int config_set(uint32_t key, GVariant *data,
ca7d19b5	249	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
a8e913c4	250	{
ca7d19b5	251	struct dev_context *devc;
a8e913c4 JL	252	int ret;
a8e913c4 JL	253
a8e913c4 JL	254	(void)cg;
a8e913c4 JL	255
ca7d19b5	256	devc = sdi->priv;
a8e913c4 JL	257
	258	ret = SR_OK;
	259	switch (key) {
ca7d19b5 JL	260	case SR_CONF_SAMPLERATE:
	261	devc->dig_samplerate = g_variant_get_uint64(data);
	262	break;
a8e913c4 JL	263	default:
	264	ret = SR_ERR_NA;
	265	}
	266
	267	return ret;
	268	}
	269
	270	static int config_list(uint32_t key, GVariant **data,
ca7d19b5	271	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
a8e913c4	272	{
ca7d19b5 JL	273	GVariant *gvar;
ca7d19b5 JL	274	GVariantBuilder gvb;
a8e913c4 JL	275	int ret;
	276
	277	(void)sdi;
a8e913c4 JL	278	(void)cg;
	279
	280	ret = SR_OK;
	281	switch (key) {
ca7d19b5 JL	282	case SR_CONF_SCAN_OPTIONS:
ca7d19b5 JL	283	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
bb0c5271	284	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
ca7d19b5 JL	285	break;
	286	case SR_CONF_DEVICE_OPTIONS:
	287	if (!sdi) {
	288	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
bb0c5271	289	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
ca7d19b5 JL	290	} else {
ca7d19b5 JL	291	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
bb0c5271	292	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
ca7d19b5 JL	293	}
	294	break;
	295	case SR_CONF_SAMPLERATE:
	296	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	297	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	298	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	299	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	300	*data = g_variant_builder_end(&gvb);
	301	break;
a8e913c4 JL	302	default:
	303	return SR_ERR_NA;
	304	}
	305
	306	return ret;
	307	}
	308
ca7d19b5 JL	309	static void dev_acquisition_abort(const struct sr_dev_inst *sdi)
	310	{
	311	struct dev_context *devc = sdi->priv;
	312	unsigned int i;
	313
	314	for (i = 0; i < devc->num_transfers; i++) {
	315	if (devc->transfers[i])
	316	libusb_cancel_transfer(devc->transfers[i]);
	317	}
	318	}
	319
	320	static int dev_acquisition_handle(int fd, int revents, void *cb_data)
	321	{
	322	struct sr_dev_inst *sdi = cb_data;
	323	struct drv_context *drvc = sdi->driver->context;
fbbafc69	324	struct timeval tv = ALL_ZERO;
ca7d19b5 JL	325
	326	(void)fd;
	327	(void)revents;
	328
	329	libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
	330
	331	return TRUE;
	332	}
	333
a8e913c4 JL	334	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
a8e913c4 JL	335	{
ca7d19b5 JL	336	struct dev_context *devc = sdi->priv;
	337	struct drv_context *drvc = sdi->driver->context;
	338	struct libusb_transfer *transfer;
	339	struct sr_usb_dev_inst *usb;
	340	uint8_t *buf;
	341	unsigned int i, ret;
	342
b6189f7c	343	ret = saleae_logic_pro_init(sdi);
ca7d19b5 JL	344	if (ret != SR_OK)
	345	return ret;
	346
b6189f7c	347	ret = saleae_logic_pro_prepare(sdi);
ca7d19b5 JL	348	if (ret != SR_OK)
	349	return ret;
	350
	351	usb = sdi->conn;
	352
	353	devc->conv_buffer = g_malloc(CONV_BUFFER_SIZE);
	354
	355	devc->num_transfers = BUF_COUNT;
	356	devc->transfers = g_malloc0(sizeof(devc->transfers) BUF_COUNT);
	357	for (i = 0; i < devc->num_transfers; i++) {
	358	buf = g_malloc(BUF_SIZE);
	359	transfer = libusb_alloc_transfer(0);
	360	libusb_fill_bulk_transfer(transfer, usb->devhdl,
bb0c5271 UH	361	2 \| LIBUSB_ENDPOINT_IN, buf, BUF_SIZE,
bb0c5271 UH	362	saleae_logic_pro_receive_data, (void *)sdi, BUF_TIMEOUT);
ca7d19b5 JL	363	if ((ret = libusb_submit_transfer(transfer)) != 0) {
	364	sr_err("Failed to submit transfer: %s.",
	365	libusb_error_name(ret));
	366	libusb_free_transfer(transfer);
	367	g_free(buf);
	368	dev_acquisition_abort(sdi);
	369	return SR_ERR;
	370	}
	371	devc->transfers[i] = transfer;
	372	devc->submitted_transfers++;
	373	}
	374
	375	usb_source_add(sdi->session, drvc->sr_ctx, BUF_TIMEOUT, dev_acquisition_handle, (void *)sdi);
	376
	377	std_session_send_df_header(sdi);
	378
b6189f7c	379	saleae_logic_pro_start(sdi);
ca7d19b5 JL	380	if (ret != SR_OK)
ca7d19b5 JL	381	return ret;
a8e913c4 JL	382
	383	return SR_OK;
	384	}
	385
	386	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	387	{
ca7d19b5 JL	388	struct dev_context *devc = sdi->priv;
	389	struct drv_context *drvc = sdi->driver->context;
	390
b6189f7c	391	saleae_logic_pro_stop(sdi);
ca7d19b5 JL	392
	393	std_session_send_df_end(sdi);
	394
	395	usb_source_remove(sdi->session, drvc->sr_ctx);
	396
	397	g_free(devc->conv_buffer);
a8e913c4 JL	398
	399	return SR_OK;
	400	}
	401
b6189f7c UH	402	SR_PRIV struct sr_dev_driver saleae_logic_pro_driver_info = {
	403	.name = "saleae-logic-pro",
	404	.longname = "Saleae Logic Pro",
a8e913c4 JL	405	.api_version = 1,
	406	.init = std_init,
	407	.cleanup = std_cleanup,
	408	.scan = scan,
	409	.dev_list = std_dev_list,
	410	.dev_clear = dev_clear,
	411	.config_get = config_get,
	412	.config_set = config_set,
	413	.config_list = config_list,
	414	.dev_open = dev_open,
	415	.dev_close = dev_close,
	416	.dev_acquisition_start = dev_acquisition_start,
	417	.dev_acquisition_stop = dev_acquisition_stop,
	418	.context = NULL,
	419	};
	420
b6189f7c	421	SR_REGISTER_DEV_DRIVER(saleae_logic_pro_driver_info);