[libsigrok.git] / hardware / saleae-logic16 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
 *
 * 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 <glib.h>
#include <libusb.h>
#include <stdlib.h>
#include <string.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"

#define LOGIC16_VID 0x21a9
#define LOGIC16_PID 0x1001
#define NUM_PROBES  16

#define USB_INTERFACE		0
#define USB_CONFIGURATION	1
#define FX2_FIRMWARE		FIRMWARE_DIR "/saleae-logic16-fx2.fw"

#define MAX_RENUM_DELAY_MS	3000


SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
static struct sr_dev_driver *di = &saleae_logic16_driver_info;

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

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

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

	hdl = NULL;
	ret = FALSE;
	while (!ret) {
		/* Assume the FW has not been loaded, unless proven wrong. */
		if (libusb_get_device_descriptor(dev, &des) != 0)
			break;

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

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

		if (libusb_get_string_descriptor_ascii(hdl,
				des.iProduct, strdesc, sizeof(strdesc)) < 0)
			break;
		if (strcmp((const char *)strdesc, "Logic S/16"))
			break;

		/* If we made it here, it must be a configured Logic16. */
		ret = TRUE;
	}
	if (hdl)
		libusb_close(hdl);

	return ret;
}

static GSList *scan(GSList *options)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_usb_dev_inst *usb;
	struct sr_probe *probe;
	struct sr_config *src;
	GSList *l, *devices, *conn_devices;
	struct libusb_device_descriptor des;
	libusb_device **devlist;
	int devcnt, ret, i, j;
	const char *conn;

	drvc = di->priv;

	conn = NULL;
	for (l = options; l; l = l->next) {
		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;

	/* Find all Logic16 devices and upload firmware to them. */
	devices = NULL;
	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	for (i = 0; devlist[i]; i++) {
		if (conn) {
			usb = NULL;
			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;
		}

		if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
			sr_warn("Failed to get device descriptor: %s.",
				libusb_error_name(ret));
			continue;
		}

		if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
			continue;

		devcnt = g_slist_length(drvc->instances);
		sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
				      "Saleae", "Logic16", NULL);
		if (!sdi)
			return NULL;
		sdi->driver = di;

		for (j = 0; probe_names[j]; j++) {
			if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
						   probe_names[j])))
				return NULL;
			sdi->probes = g_slist_append(sdi->probes, probe);
		}

		if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
			return NULL;
		sdi->priv = devc;
		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);

		if (check_conf_profile(devlist[i])) {
			/* Already has the firmware, so fix the new address. */
			sr_dbg("Found a Logic16 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);
		} else {
			if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
						  FX2_FIRMWARE) == SR_OK)
				/* Store when this device's FW was updated. */
				devc->fw_updated = g_get_monotonic_time();
			else
				sr_err("Firmware upload failed for "
				       "device %d.", devcnt);
			sdi->inst_type = SR_INST_USB;
			sdi->conn = sr_usb_dev_inst_new (libusb_get_bus_number(devlist[i]),
							 0xff, NULL);
		}
	}
	libusb_free_device_list(devlist, 1);
	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);

	return devices;
}

static GSList *dev_list(void)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->instances;
}

static int dev_clear(void)
{
	return std_dev_clear(di, NULL);
}

static int logic16_dev_open(struct sr_dev_inst *sdi)
{
	libusb_device **devlist;
	struct sr_usb_dev_inst *usb;
	struct libusb_device_descriptor des;
	struct dev_context *devc;
	struct drv_context *drvc;
	int ret, skip, i, device_count;

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

	if (sdi->status == SR_ST_ACTIVE)
		/* Device is already in use. */
		return SR_ERR;

	skip = 0;
	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	if (device_count < 0) {
		sr_err("Failed to get device list: %s.",
		       libusb_error_name(device_count));
		return SR_ERR;
	}

	for (i = 0; i < device_count; i++) {
		if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
			sr_err("Failed to get device descriptor: %s.",
			       libusb_error_name(ret));
			continue;
		}

		if (des.idVendor != LOGIC16_VID
		    || des.idProduct != LOGIC16_PID)
			continue;

		if (sdi->status == SR_ST_INITIALIZING) {
			if (skip != sdi->index) {
				/* Skip devices of this type that aren't the one we want. */
				skip += 1;
				continue;
			}
		} else if (sdi->status == SR_ST_INACTIVE) {
			/*
			 * This device is fully enumerated, so we need to find
			 * this device by vendor, product, bus and address.
			 */
			if (libusb_get_bus_number(devlist[i]) != usb->bus
				|| libusb_get_device_address(devlist[i]) != usb->address)
				/* This is not the one. */
				continue;
		}

		if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
			if (usb->address == 0xff)
				/*
				 * First time we touch this device after FW
				 * upload, so we don't know the address yet.
				 */
				usb->address = libusb_get_device_address(devlist[i]);
		} else {
			sr_err("Failed to open device: %s.",
			       libusb_error_name(ret));
			break;
		}

		if ((ret = saleae_logic16_init_device(sdi)) != SR_OK) {
			sr_err("Failed to init device.");
			break;
		}

		sdi->status = SR_ST_ACTIVE;
		sr_info("Opened device %d on %d.%d, "
			"interface %d.",
			sdi->index, usb->bus, usb->address,
			USB_INTERFACE);

		break;
	}
	libusb_free_device_list(devlist, 1);

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

	return SR_OK;
}

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

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

	/*
	 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
	 * milliseconds for the FX2 to renumerate.
	 */
	ret = SR_ERR;
	if (devc->fw_updated > 0) {
		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) {
			if ((ret = logic16_dev_open(sdi)) == 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);
	} else {
		sr_info("Firmware upload was not needed.");
		ret = logic16_dev_open(sdi);
	}

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

	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	if (ret != 0) {
		switch(ret) {
		case LIBUSB_ERROR_BUSY:
			sr_err("Unable to claim USB interface. Another "
			       "program or driver has already claimed it.");
			break;
		case LIBUSB_ERROR_NO_DEVICE:
			sr_err("Device has been disconnected.");
			break;
		default:
			sr_err("Unable to claim interface: %s.",
			       libusb_error_name(ret));
			break;
		}

		return SR_ERR;
	}

	if (devc->cur_samplerate == 0) {
		/* Samplerate hasn't been set; default to the slowest one. */
		devc->cur_samplerate = 500000;
	}

	return SR_OK;
}

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

	usb = sdi->conn;
	if (usb->devhdl == NULL)
		return SR_ERR;

	sr_info("Closing device %d on %d.%d interface %d.",
		sdi->index, usb->bus, usb->address, USB_INTERFACE);
	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	libusb_close(usb->devhdl);
	usb->devhdl = NULL;
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(void)
{
	int ret;
	struct drv_context *drvc;

	if (!(drvc = di->priv))
		/* Can get called on an unused driver, doesn't matter. */
		return SR_OK;

	ret = dev_clear();
	g_free(drvc);
	di->priv = NULL;

	return ret;
}

static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	int ret;

	(void)sdi;
	(void)data;

	ret = SR_OK;
	switch (key) {
	/* TODO */
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi)
{
	int ret;

	(void)data;

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

	ret = SR_OK;
	switch (key) {
	/* TODO */
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	int ret;

	(void)sdi;
	(void)data;

	ret = SR_OK;
	switch (key) {
	/* TODO */
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	(void)sdi;
	(void)cb_data;

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

	/* TODO: configure hardware, reset acquisition state, set up
	 * callbacks and send header packet. */

	return SR_OK;
}

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;

	/* TODO: stop acquisition. */

	return SR_OK;
}

SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = {
	.name = "saleae-logic16",
	.longname = "Saleae Logic16",
	.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,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
c463dcf0 MC	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
	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
f6a21fa5 MC	20	#include <glib.h>
	21	#include <libusb.h>
	22	#include <stdlib.h>
	23	#include <string.h>
	24	#include "libsigrok.h"
	25	#include "libsigrok-internal.h"
c463dcf0 MC	26	#include "protocol.h"
c463dcf0 MC	27
f6a21fa5 MC	28	#define LOGIC16_VID 0x21a9
	29	#define LOGIC16_PID 0x1001
	30	#define NUM_PROBES 16
	31
5eea4305 MC	32	#define USB_INTERFACE 0
	33	#define USB_CONFIGURATION 1
	34	#define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw"
	35
	36	#define MAX_RENUM_DELAY_MS 3000
	37
	38
c463dcf0 MC	39	SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
	40	static struct sr_dev_driver *di = &saleae_logic16_driver_info;
	41
f6a21fa5 MC	42	static const char *probe_names[NUM_PROBES + 1] = {
	43	"0", "1", "2", "3", "4", "5", "6", "7", "8",
	44	"9", "10", "11", "12", "13", "14", "15",
	45	NULL,
	46	};
c463dcf0 MC	47
	48	static int init(struct sr_context *sr_ctx)
	49	{
	50	return std_init(sr_ctx, di, LOG_PREFIX);
	51	}
	52
5eea4305 MC	53	static gboolean check_conf_profile(libusb_device *dev)
	54	{
	55	struct libusb_device_descriptor des;
	56	struct libusb_device_handle *hdl;
	57	gboolean ret;
	58	unsigned char strdesc[64];
	59
	60	hdl = NULL;
	61	ret = FALSE;
	62	while (!ret) {
	63	/* Assume the FW has not been loaded, unless proven wrong. */
	64	if (libusb_get_device_descriptor(dev, &des) != 0)
	65	break;
	66
	67	if (libusb_open(dev, &hdl) != 0)
	68	break;
	69
	70	if (libusb_get_string_descriptor_ascii(hdl,
	71	des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
	72	break;
	73	if (strcmp((const char *)strdesc, "Saleae LLC"))
	74	break;
	75
	76	if (libusb_get_string_descriptor_ascii(hdl,
	77	des.iProduct, strdesc, sizeof(strdesc)) < 0)
	78	break;
	79	if (strcmp((const char *)strdesc, "Logic S/16"))
	80	break;
	81
	82	/* If we made it here, it must be a configured Logic16. */
	83	ret = TRUE;
	84	}
	85	if (hdl)
	86	libusb_close(hdl);
	87
	88	return ret;
	89	}
	90
c463dcf0 MC	91	static GSList scan(GSList options)
	92	{
	93	struct drv_context *drvc;
f6a21fa5 MC	94	struct dev_context *devc;
f6a21fa5 MC	95	struct sr_dev_inst *sdi;
5eea4305	96	struct sr_usb_dev_inst *usb;
f6a21fa5	97	struct sr_probe *probe;
5eea4305 MC	98	struct sr_config *src;
5eea4305 MC	99	GSList l, devices, *conn_devices;
f6a21fa5 MC	100	struct libusb_device_descriptor des;
f6a21fa5 MC	101	libusb_device **devlist;
5eea4305 MC	102	int devcnt, ret, i, j;
5eea4305 MC	103	const char *conn;
c463dcf0	104
c463dcf0	105	drvc = di->priv;
c463dcf0	106
5eea4305 MC	107	conn = NULL;
	108	for (l = options; l; l = l->next) {
	109	src = l->data;
	110	switch (src->key) {
	111	case SR_CONF_CONN:
	112	conn = g_variant_get_string(src->data, NULL);
	113	break;
	114	}
	115	}
	116	if (conn)
	117	conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	118	else
	119	conn_devices = NULL;
	120
	121	/* Find all Logic16 devices and upload firmware to them. */
f6a21fa5 MC	122	devices = NULL;
	123	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	124	for (i = 0; devlist[i]; i++) {
5eea4305 MC	125	if (conn) {
	126	usb = NULL;
	127	for (l = conn_devices; l; l = l->next) {
	128	usb = l->data;
	129	if (usb->bus == libusb_get_bus_number(devlist[i])
	130	&& usb->address == libusb_get_device_address(devlist[i]))
	131	break;
	132	}
	133	if (!l)
	134	/* This device matched none of the ones that
	135	* matched the conn specification. */
	136	continue;
	137	}
	138
	139	if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
	140	sr_warn("Failed to get device descriptor: %s.",
	141	libusb_error_name(ret));
f6a21fa5 MC	142	continue;
	143	}
	144
	145	if (des.idVendor != LOGIC16_VID \|\| des.idProduct != LOGIC16_PID)
	146	continue;
	147
	148	devcnt = g_slist_length(drvc->instances);
5eea4305 MC	149	sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
	150	"Saleae", "Logic16", NULL);
	151	if (!sdi)
f6a21fa5 MC	152	return NULL;
	153	sdi->driver = di;
	154
f6a21fa5 MC	155	for (j = 0; probe_names[j]; j++) {
	156	if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
	157	probe_names[j])))
	158	return NULL;
	159	sdi->probes = g_slist_append(sdi->probes, probe);
	160	}
	161
5eea4305	162	if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
f6a21fa5	163	return NULL;
5eea4305	164	sdi->priv = devc;
f6a21fa5 MC	165	drvc->instances = g_slist_append(drvc->instances, sdi);
f6a21fa5 MC	166	devices = g_slist_append(devices, sdi);
5eea4305 MC	167
	168	if (check_conf_profile(devlist[i])) {
	169	/* Already has the firmware, so fix the new address. */
	170	sr_dbg("Found a Logic16 device.");
	171	sdi->status = SR_ST_INACTIVE;
	172	sdi->inst_type = SR_INST_USB;
	173	sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
	174	libusb_get_device_address(devlist[i]), NULL);
	175	} else {
	176	if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
	177	FX2_FIRMWARE) == SR_OK)
	178	/* Store when this device's FW was updated. */
	179	devc->fw_updated = g_get_monotonic_time();
	180	else
	181	sr_err("Firmware upload failed for "
	182	"device %d.", devcnt);
	183	sdi->inst_type = SR_INST_USB;
	184	sdi->conn = sr_usb_dev_inst_new (libusb_get_bus_number(devlist[i]),
	185	0xff, NULL);
	186	}
f6a21fa5 MC	187	}
f6a21fa5 MC	188	libusb_free_device_list(devlist, 1);
5eea4305	189	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
c463dcf0 MC	190
	191	return devices;
	192	}
	193
	194	static GSList *dev_list(void)
	195	{
	196	struct drv_context *drvc;
	197
	198	drvc = di->priv;
	199
	200	return drvc->instances;
	201	}
	202
	203	static int dev_clear(void)
	204	{
	205	return std_dev_clear(di, NULL);
	206	}
	207
5eea4305 MC	208	static int logic16_dev_open(struct sr_dev_inst *sdi)
	209	{
	210	libusb_device **devlist;
	211	struct sr_usb_dev_inst *usb;
	212	struct libusb_device_descriptor des;
	213	struct dev_context *devc;
	214	struct drv_context *drvc;
	215	int ret, skip, i, device_count;
	216
	217	drvc = di->priv;
	218	devc = sdi->priv;
	219	usb = sdi->conn;
	220
	221	if (sdi->status == SR_ST_ACTIVE)
	222	/* Device is already in use. */
	223	return SR_ERR;
	224
	225	skip = 0;
	226	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
	227	if (device_count < 0) {
	228	sr_err("Failed to get device list: %s.",
	229	libusb_error_name(device_count));
	230	return SR_ERR;
	231	}
	232
	233	for (i = 0; i < device_count; i++) {
	234	if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
	235	sr_err("Failed to get device descriptor: %s.",
	236	libusb_error_name(ret));
	237	continue;
	238	}
	239
	240	if (des.idVendor != LOGIC16_VID
	241	\|\| des.idProduct != LOGIC16_PID)
	242	continue;
	243
	244	if (sdi->status == SR_ST_INITIALIZING) {
	245	if (skip != sdi->index) {
	246	/* Skip devices of this type that aren't the one we want. */
	247	skip += 1;
	248	continue;
	249	}
	250	} else if (sdi->status == SR_ST_INACTIVE) {
	251	/*
	252	* This device is fully enumerated, so we need to find
	253	* this device by vendor, product, bus and address.
	254	*/
	255	if (libusb_get_bus_number(devlist[i]) != usb->bus
	256	\|\| libusb_get_device_address(devlist[i]) != usb->address)
	257	/* This is not the one. */
	258	continue;
	259	}
	260
	261	if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
	262	if (usb->address == 0xff)
	263	/*
	264	* First time we touch this device after FW
	265	* upload, so we don't know the address yet.
	266	*/
	267	usb->address = libusb_get_device_address(devlist[i]);
	268	} else {
	269	sr_err("Failed to open device: %s.",
	270	libusb_error_name(ret));
	271	break;
272	}
273
15abcf0f MC	274	if ((ret = saleae_logic16_init_device(sdi)) != SR_OK) {
	275	sr_err("Failed to init device.");
	276	break;
	277	}
	278
5eea4305 MC	279	sdi->status = SR_ST_ACTIVE;
	280	sr_info("Opened device %d on %d.%d, "
	281	"interface %d.",
	282	sdi->index, usb->bus, usb->address,
	283	USB_INTERFACE);
	284
	285	break;
	286	}
	287	libusb_free_device_list(devlist, 1);
	288
	289	if (sdi->status != SR_ST_ACTIVE)
	290	return SR_ERR;
	291
	292	return SR_OK;
	293	}
	294
c463dcf0 MC	295	static int dev_open(struct sr_dev_inst *sdi)
c463dcf0 MC	296	{
5eea4305 MC	297	struct sr_usb_dev_inst *usb;
	298	struct dev_context *devc;
	299	int ret;
	300	int64_t timediff_us, timediff_ms;
	301
	302	devc = sdi->priv;
	303	usb = sdi->conn;
	304
	305	/*
	306	* If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
	307	* milliseconds for the FX2 to renumerate.
	308	*/
	309	ret = SR_ERR;
	310	if (devc->fw_updated > 0) {
	311	sr_info("Waiting for device to reset.");
	312	/* Takes >= 300ms for the FX2 to be gone from the USB bus. */
	313	g_usleep(300 * 1000);
	314	timediff_ms = 0;
	315	while (timediff_ms < MAX_RENUM_DELAY_MS) {
	316	if ((ret = logic16_dev_open(sdi)) == SR_OK)
	317	break;
	318	g_usleep(100 * 1000);
	319
	320	timediff_us = g_get_monotonic_time() - devc->fw_updated;
	321	timediff_ms = timediff_us / 1000;
	322	sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
	323	}
	324	if (ret != SR_OK) {
	325	sr_err("Device failed to renumerate.");
	326	return SR_ERR;
	327	}
	328	sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
	329	} else {
	330	sr_info("Firmware upload was not needed.");
	331	ret = logic16_dev_open(sdi);
	332	}
	333
	334	if (ret != SR_OK) {
	335	sr_err("Unable to open device.");
	336	return SR_ERR;
	337	}
	338
	339	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	340	if (ret != 0) {
	341	switch(ret) {
	342	case LIBUSB_ERROR_BUSY:
	343	sr_err("Unable to claim USB interface. Another "
	344	"program or driver has already claimed it.");
	345	break;
	346	case LIBUSB_ERROR_NO_DEVICE:
	347	sr_err("Device has been disconnected.");
	348	break;
	349	default:
	350	sr_err("Unable to claim interface: %s.",
	351	libusb_error_name(ret));
	352	break;
	353	}
c463dcf0	354
5eea4305 MC	355	return SR_ERR;
5eea4305 MC	356	}
c463dcf0	357
5eea4305 MC	358	if (devc->cur_samplerate == 0) {
	359	/* Samplerate hasn't been set; default to the slowest one. */
	360	devc->cur_samplerate = 500000;
	361	}
c463dcf0 MC	362
	363	return SR_OK;
	364	}
	365
	366	static int dev_close(struct sr_dev_inst *sdi)
	367	{
5eea4305	368	struct sr_usb_dev_inst *usb;
c463dcf0	369
5eea4305 MC	370	usb = sdi->conn;
	371	if (usb->devhdl == NULL)
	372	return SR_ERR;
c463dcf0	373
5eea4305 MC	374	sr_info("Closing device %d on %d.%d interface %d.",
	375	sdi->index, usb->bus, usb->address, USB_INTERFACE);
	376	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	377	libusb_close(usb->devhdl);
	378	usb->devhdl = NULL;
c463dcf0 MC	379	sdi->status = SR_ST_INACTIVE;
	380
	381	return SR_OK;
	382	}
	383
	384	static int cleanup(void)
	385	{
f6a21fa5 MC	386	int ret;
f6a21fa5 MC	387	struct drv_context *drvc;
c463dcf0	388
f6a21fa5 MC	389	if (!(drvc = di->priv))
	390	/* Can get called on an unused driver, doesn't matter. */
	391	return SR_OK;
c463dcf0	392
f6a21fa5 MC	393	ret = dev_clear();
	394	g_free(drvc);
	395	di->priv = NULL;
	396
	397	return ret;
c463dcf0 MC	398	}
	399
	400	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi)
	401	{
	402	int ret;
	403
	404	(void)sdi;
	405	(void)data;
	406
	407	ret = SR_OK;
	408	switch (key) {
	409	/* TODO */
	410	default:
	411	return SR_ERR_NA;
	412	}
	413
	414	return ret;
	415	}
	416
	417	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi)
	418	{
	419	int ret;
	420
	421	(void)data;
	422
	423	if (sdi->status != SR_ST_ACTIVE)
	424	return SR_ERR_DEV_CLOSED;
	425
	426	ret = SR_OK;
	427	switch (key) {
	428	/* TODO */
	429	default:
	430	ret = SR_ERR_NA;
	431	}
	432
	433	return ret;
	434	}
	435
	436	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	437	{
	438	int ret;
	439
	440	(void)sdi;
	441	(void)data;
	442
	443	ret = SR_OK;
	444	switch (key) {
	445	/* TODO */
	446	default:
	447	return SR_ERR_NA;
	448	}
	449
	450	return ret;
	451	}
	452
	453	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	454	void *cb_data)
	455	{
	456	(void)sdi;
	457	(void)cb_data;
	458
	459	if (sdi->status != SR_ST_ACTIVE)
	460	return SR_ERR_DEV_CLOSED;
	461
462	/* TODO: configure hardware, reset acquisition state, set up
463	* callbacks and send header packet. */
464
465	return SR_OK;
466	}
467
468	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
469	{
470	(void)cb_data;
471
472	if (sdi->status != SR_ST_ACTIVE)
473	return SR_ERR_DEV_CLOSED;
474
475	/* TODO: stop acquisition. */
476
477	return SR_OK;
478	}
479
480	SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = {
481	.name = "saleae-logic16",
482	.longname = "Saleae Logic16",
483	.api_version = 1,
484	.init = init,
485	.cleanup = cleanup,
486	.scan = scan,
487	.dev_list = dev_list,
488	.dev_clear = dev_clear,
489	.config_get = config_get,
490	.config_set = config_set,
491	.config_list = config_list,
492	.dev_open = dev_open,
493	.dev_close = dev_close,
494	.dev_acquisition_start = dev_acquisition_start,
495	.dev_acquisition_stop = dev_acquisition_stop,
496	.priv = NULL,
497	};