[libsigrok.git] / src / hardware / ikalogic-scanalogic2 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 Marc Schink <sigrok-dev@marcschink.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 "protocol.h"

static const uint32_t devopts[] = {
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
};

static const int32_t trigger_matches[] = {
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
	SR_TRIGGER_EDGE,
};

SR_PRIV const uint64_t sl2_samplerates[NUM_SAMPLERATES] = {
	SR_KHZ(1.25),
	SR_KHZ(10),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(250),
	SR_KHZ(500),
	SR_MHZ(1),
	SR_MHZ(2.5),
	SR_MHZ(5),
	SR_MHZ(10),
	SR_MHZ(20),
};

static const char *channel_names[] = {
	"0", "1", "2", "3",
};

SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;

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

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	GSList *usb_devices, *devices, *l;
	struct drv_context *drvc;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	struct device_info dev_info;
	unsigned int i;
	int ret;

	(void)options;

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

	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);

	if (!usb_devices)
		return NULL;

	for (l = usb_devices; l; l = l->next) {
		usb = l->data;

		if ((ret = sl2_get_device_info(*usb, &dev_info)) < 0) {
			sr_warn("Failed to get device information: %d.", ret);
			sr_usb_dev_inst_free(usb);
			continue;
		}

		devc = g_malloc0(sizeof(struct dev_context));

		if (!(devc->xfer_in = libusb_alloc_transfer(0))) {
			sr_err("Transfer malloc failed.");
			sr_usb_dev_inst_free(usb);
			g_free(devc);
			continue;
		}

		if (!(devc->xfer_out = libusb_alloc_transfer(0))) {
			sr_err("Transfer malloc failed.");
			sr_usb_dev_inst_free(usb);
			libusb_free_transfer(devc->xfer_in);
			g_free(devc);
			continue;
		}

		sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->status = SR_ST_INACTIVE;
		sdi->vendor = g_strdup(VENDOR_NAME);
		sdi->model = g_strdup(MODEL_NAME);
		sdi->version = g_strdup_printf("%u.%u", dev_info.fw_ver_major, dev_info.fw_ver_minor);
		sdi->serial_num = g_strdup_printf("%d", dev_info.serial);
		sdi->priv = devc;
		sdi->driver = di;
		sdi->inst_type = SR_INST_USB;
		sdi->conn = usb;

		for (i = 0; i < ARRAY_SIZE(channel_names); i++)
			devc->channels[i] = sr_channel_new(sdi, i,
				SR_CHANNEL_LOGIC, TRUE, channel_names[i]);

		devc->state = STATE_IDLE;
		devc->next_state = STATE_IDLE;

		/* Set default samplerate. */
		sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE);

		/* Set default capture ratio. */
		devc->capture_ratio = 0;

		/* Set default after trigger delay. */
		devc->after_trigger_delay = 0;

		memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE +
			PACKET_LENGTH);
		memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE +
			PACKET_LENGTH);

		libusb_fill_control_setup(devc->xfer_buf_in,
			USB_REQUEST_TYPE_IN, USB_HID_GET_REPORT,
			USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
			PACKET_LENGTH);
		libusb_fill_control_setup(devc->xfer_buf_out,
			USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT,
			USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
			PACKET_LENGTH);

		devc->xfer_data_in = devc->xfer_buf_in +
			LIBUSB_CONTROL_SETUP_SIZE;
		devc->xfer_data_out = devc->xfer_buf_out +
			LIBUSB_CONTROL_SETUP_SIZE;

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

	g_slist_free(usb_devices);

	return devices;
}

static void clear_dev_context(void *priv)
{
	struct dev_context *devc;

	devc = priv;

	sr_dbg("Device context cleared.");

	libusb_free_transfer(devc->xfer_in);
	libusb_free_transfer(devc->xfer_out);
	g_free(devc);
}

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

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;
	struct sr_usb_dev_inst *usb;
	uint8_t buffer[PACKET_LENGTH];
	int ret;

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

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

	/*
	 * Determine if a kernel driver is active on this interface and, if so,
	 * detach it.
	 */
	if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
		ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
		if (ret < 0) {
			sr_err("Failed to detach kernel driver: %s.",
				libusb_error_name(ret));
			return SR_ERR;
		}
	}

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

	libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
		devc->xfer_buf_in, sl2_receive_transfer_in,
		sdi, USB_TIMEOUT_MS);

	libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
		devc->xfer_buf_out, sl2_receive_transfer_out,
		sdi, USB_TIMEOUT_MS);

	memset(buffer, 0, sizeof(buffer));

	buffer[0] = CMD_RESET;
	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
		sr_err("Device reset failed: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	/*
	 * Set the device to idle state. If the device is not in idle state it
	 * possibly will reset itself after a few seconds without being used
	 * and thereby close the connection.
	 */
	buffer[0] = CMD_IDLE;
	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
		sr_err("Failed to set device in idle state: %s.",
			libusb_error_name(ret));
		return SR_ERR;
	}

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

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

	usb = sdi->conn;

	if (!usb->devhdl)
		return SR_OK;

	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	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;
	int ret;

	(void)cg;

	ret = SR_OK;
	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->samplerate);
		break;
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		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)
{
	uint64_t samplerate, limit_samples, capture_ratio;
	int ret;

	(void)cg;

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

	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		limit_samples = g_variant_get_uint64(data);
		ret = sl2_set_limit_samples(sdi, limit_samples);
		break;
	case SR_CONF_SAMPLERATE:
		samplerate = g_variant_get_uint64(data);
		ret = sl2_set_samplerate(sdi, samplerate);
		break;
	case SR_CONF_CAPTURE_RATIO:
		capture_ratio = g_variant_get_uint64(data);
		ret = sl2_set_capture_ratio(sdi, capture_ratio);
		break;
	default:
		return 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, *grange[2];
	GVariantBuilder gvb;
	int ret;

	(void)sdi;
	(void)cg;

	ret = SR_OK;
	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(&gvb, G_VARIANT_TYPE("a{sv}"));
		gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
			sl2_samplerates, ARRAY_SIZE(sl2_samplerates),
			sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
		*data = g_variant_builder_end(&gvb);
		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;
	case SR_CONF_LIMIT_SAMPLES:
		grange[0] = g_variant_new_uint64(0);
		grange[1] = g_variant_new_uint64(MAX_SAMPLES);
		*data = g_variant_new_tuple(grange, 2);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di = sdi->driver;
	struct drv_context *drvc;
	struct dev_context *devc;
	uint16_t trigger_bytes, tmp;
	unsigned int i, j;
	int ret;

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

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

	devc->wait_data_ready_locked = TRUE;
	devc->stopping_in_progress = FALSE;
	devc->transfer_error = FALSE;
	devc->samples_processed = 0;
	devc->channel = 0;
	devc->sample_packet = 0;

	/*
	 * The trigger must be configured first because the calculation of the
	 * pre and post trigger samples depends on a configured trigger.
	 */
	sl2_convert_trigger(sdi);
	sl2_calculate_trigger_samples(sdi);

	trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes;

	/* Calculate the number of expected sample packets. */
	devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES;

	/* Round up the number of expected sample packets. */
	if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0)
		devc->num_sample_packets++;

	devc->num_enabled_channels = 0;

	/*
	 * Count the number of enabled channels and number them for a sequential
	 * access.
	 */
	for (i = 0, j = 0; i < NUM_CHANNELS; i++) {
		if (devc->channels[i]->enabled) {
			devc->num_enabled_channels++;
			devc->channel_map[j] = i;
			j++;
		}
	}

	sr_dbg("Number of enabled channels: %i.", devc->num_enabled_channels);

	/* Set up the transfer buffer for the acquisition. */
	devc->xfer_data_out[0] = CMD_SAMPLE;
	devc->xfer_data_out[1] = 0x00;

	tmp = GUINT16_TO_LE(devc->pre_trigger_bytes);
	memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp));

	tmp = GUINT16_TO_LE(devc->post_trigger_bytes);
	memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp));

	devc->xfer_data_out[6] = devc->samplerate_id;
	devc->xfer_data_out[7] = devc->trigger_type;
	devc->xfer_data_out[8] = devc->trigger_channel;
	devc->xfer_data_out[9] = 0x00;

	tmp = GUINT16_TO_LE(devc->after_trigger_delay);
	memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp));

	if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) {
		sr_err("Submit transfer failed: %s.", libusb_error_name(ret));
		return SR_ERR;
	}

	usb_source_add(sdi->session, drvc->sr_ctx, 100,
			ikalogic_scanalogic2_receive_data, (void *)sdi);

	sr_dbg("Acquisition started successfully.");

	std_session_send_df_header(sdi, LOG_PREFIX);

	devc->next_state = STATE_SAMPLE;

	return SR_OK;
}

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

	sr_dbg("Stopping acquisition.");

	sdi->status = SR_ST_STOPPING;

	return SR_OK;
}

SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
	.name = "ikalogic-scanalogic2",
	.longname = "IKALOGIC Scanalogic-2",
	.api_version = 1,
	.init = 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,
};
Commit	Line	Data
16e76bae MS	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 Marc Schink <sigrok-dev@marcschink.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
6ec6c43b	20	#include <config.h>
16e76bae MS	21	#include "protocol.h"
16e76bae MS	22
f254bc4b	23	static const uint32_t devopts[] = {
e52e712d	24	SR_CONF_LOGIC_ANALYZER,
5827f61b BV	25	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET \| SR_CONF_LIST,
	26	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	27	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	28	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
e52e712d MS	29	};
e52e712d MS	30
02d5c0d8 BV	31	static const int32_t trigger_matches[] = {
	32	SR_TRIGGER_RISING,
	33	SR_TRIGGER_FALLING,
	34	SR_TRIGGER_EDGE,
	35	};
	36
79914b3a	37	SR_PRIV const uint64_t sl2_samplerates[NUM_SAMPLERATES] = {
e52e712d MS	38	SR_KHZ(1.25),
	39	SR_KHZ(10),
	40	SR_KHZ(50),
	41	SR_KHZ(100),
	42	SR_KHZ(250),
	43	SR_KHZ(500),
	44	SR_MHZ(1),
	45	SR_MHZ(2.5),
	46	SR_MHZ(5),
	47	SR_MHZ(10),
c824eb63	48	SR_MHZ(20),
e52e712d MS	49	};
e52e712d MS	50
53cda65a	51	static const char *channel_names[] = {
e52e712d	52	"0", "1", "2", "3",
e52e712d MS	53	};
e52e712d MS	54
16e76bae	55	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
16e76bae	56
4f840ce9	57	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
16e76bae	58	{
c45c32ce	59	return std_init(di, sr_ctx);
16e76bae MS	60	}
16e76bae MS	61
4f840ce9	62	static GSList scan(struct sr_dev_driver di, GSList *options)
16e76bae	63	{
e52e712d	64	GSList usb_devices, devices, *l;
16e76bae	65	struct drv_context *drvc;
e52e712d	66	struct sr_dev_inst *sdi;
e52e712d MS	67	struct dev_context *devc;
	68	struct sr_usb_dev_inst *usb;
	69	struct device_info dev_info;
dcd438ee UH	70	unsigned int i;
dcd438ee UH	71	int ret;
16e76bae MS	72
	73	(void)options;
	74
	75	devices = NULL;
41812aca	76	drvc = di->context;
16e76bae	77	drvc->instances = NULL;
e52e712d MS	78
	79	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
	80
98fec29e	81	if (!usb_devices)
e52e712d MS	82	return NULL;
e52e712d MS	83
c824eb63	84	for (l = usb_devices; l; l = l->next) {
e52e712d MS	85	usb = l->data;
e52e712d MS	86
79914b3a UH	87	if ((ret = sl2_get_device_info(*usb, &dev_info)) < 0) {
79914b3a UH	88	sr_warn("Failed to get device information: %d.", ret);
e52e712d MS	89	sr_usb_dev_inst_free(usb);
	90	continue;
	91	}
	92
f57d8ffe	93	devc = g_malloc0(sizeof(struct dev_context));
e52e712d MS	94
	95	if (!(devc->xfer_in = libusb_alloc_transfer(0))) {
	96	sr_err("Transfer malloc failed.");
	97	sr_usb_dev_inst_free(usb);
	98	g_free(devc);
	99	continue;
	100	}
	101
	102	if (!(devc->xfer_out = libusb_alloc_transfer(0))) {
	103	sr_err("Transfer malloc failed.");
	104	sr_usb_dev_inst_free(usb);
	105	libusb_free_transfer(devc->xfer_in);
	106	g_free(devc);
	107	continue;
	108	}
	109
aac29cc1	110	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	111	sdi->status = SR_ST_INACTIVE;
	112	sdi->vendor = g_strdup(VENDOR_NAME);
	113	sdi->model = g_strdup(MODEL_NAME);
	114	sdi->version = g_strdup_printf("%u.%u", dev_info.fw_ver_major, dev_info.fw_ver_minor);
	115	sdi->serial_num = g_strdup_printf("%d", dev_info.serial);
e52e712d MS	116	sdi->priv = devc;
	117	sdi->driver = di;
	118	sdi->inst_type = SR_INST_USB;
	119	sdi->conn = usb;
	120
0f34cb47 UH	121	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
	122	devc->channels[i] = sr_channel_new(sdi, i,
	123	SR_CHANNEL_LOGIC, TRUE, channel_names[i]);
e52e712d MS	124
	125	devc->state = STATE_IDLE;
	126	devc->next_state = STATE_IDLE;
	127
	128	/* Set default samplerate. */
79914b3a	129	sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE);
e52e712d MS	130
	131	/* Set default capture ratio. */
	132	devc->capture_ratio = 0;
	133
	134	/* Set default after trigger delay. */
	135	devc->after_trigger_delay = 0;
	136
	137	memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE +
	138	PACKET_LENGTH);
	139	memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE +
	140	PACKET_LENGTH);
	141
	142	libusb_fill_control_setup(devc->xfer_buf_in,
fb8d593c	143	USB_REQUEST_TYPE_IN, USB_HID_GET_REPORT,
e52e712d MS	144	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	145	PACKET_LENGTH);
	146	libusb_fill_control_setup(devc->xfer_buf_out,
	147	USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT,
	148	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	149	PACKET_LENGTH);
	150
	151	devc->xfer_data_in = devc->xfer_buf_in +
	152	LIBUSB_CONTROL_SETUP_SIZE;
	153	devc->xfer_data_out = devc->xfer_buf_out +
	154	LIBUSB_CONTROL_SETUP_SIZE;
	155
	156	drvc->instances = g_slist_append(drvc->instances, sdi);
	157	devices = g_slist_append(devices, sdi);
e52e712d	158	}
16e76bae	159
e52e712d	160	g_slist_free(usb_devices);
16e76bae MS	161
	162	return devices;
	163	}
	164
e52e712d MS	165	static void clear_dev_context(void *priv)
e52e712d MS	166	{
c824eb63 UH	167	struct dev_context *devc;
	168
	169	devc = priv;
e52e712d	170
c824eb63	171	sr_dbg("Device context cleared.");
e52e712d MS	172
	173	libusb_free_transfer(devc->xfer_in);
	174	libusb_free_transfer(devc->xfer_out);
	175	g_free(devc);
	176	}
	177
4f840ce9	178	static int dev_clear(const struct sr_dev_driver *di)
16e76bae	179	{
e52e712d	180	return std_dev_clear(di, &clear_dev_context);
16e76bae MS	181	}
	182
	183	static int dev_open(struct sr_dev_inst *sdi)
	184	{
4f840ce9	185	struct sr_dev_driver *di = sdi->driver;
efa98402	186	struct drv_context *drvc = di->context;
e52e712d MS	187	struct dev_context *devc;
	188	struct sr_usb_dev_inst *usb;
	189	uint8_t buffer[PACKET_LENGTH];
	190	int ret;
	191
e52e712d MS	192	usb = sdi->conn;
e52e712d MS	193	devc = sdi->priv;
16e76bae	194
e52e712d MS	195	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	196	return SR_ERR;
	197
	198	/*
	199	* Determine if a kernel driver is active on this interface and, if so,
	200	* detach it.
	201	*/
	202	if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
	203	ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
e52e712d	204	if (ret < 0) {
9526f2d4	205	sr_err("Failed to detach kernel driver: %s.",
e52e712d MS	206	libusb_error_name(ret));
	207	return SR_ERR;
	208	}
	209	}
	210
79914b3a	211	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) {
e52e712d MS	212	sr_err("Failed to claim interface: %s.",
	213	libusb_error_name(ret));
	214	return SR_ERR;
	215	}
	216
	217	libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
79914b3a	218	devc->xfer_buf_in, sl2_receive_transfer_in,
1a46cc62	219	sdi, USB_TIMEOUT_MS);
e52e712d MS	220
e52e712d MS	221	libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
79914b3a	222	devc->xfer_buf_out, sl2_receive_transfer_out,
1a46cc62	223	sdi, USB_TIMEOUT_MS);
e52e712d MS	224
	225	memset(buffer, 0, sizeof(buffer));
	226
	227	buffer[0] = CMD_RESET;
79914b3a	228	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	229	sr_err("Device reset failed: %s.", libusb_error_name(ret));
	230	return SR_ERR;
	231	}
	232
	233	/*
	234	* Set the device to idle state. If the device is not in idle state it
c824eb63 UH	235	* possibly will reset itself after a few seconds without being used
c824eb63 UH	236	* and thereby close the connection.
e52e712d MS	237	*/
e52e712d MS	238	buffer[0] = CMD_IDLE;
79914b3a	239	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	240	sr_err("Failed to set device in idle state: %s.",
	241	libusb_error_name(ret));
	242	return SR_ERR;
	243	}
16e76bae MS	244
	245	sdi->status = SR_ST_ACTIVE;
	246
	247	return SR_OK;
	248	}
	249
	250	static int dev_close(struct sr_dev_inst *sdi)
	251	{
e52e712d MS	252	struct sr_usb_dev_inst *usb;
e52e712d MS	253
e52e712d MS	254	usb = sdi->conn;
	255
	256	if (!usb->devhdl)
	257	return SR_OK;
16e76bae	258
e52e712d MS	259	libusb_release_interface(usb->devhdl, USB_INTERFACE);
e52e712d MS	260	libusb_close(usb->devhdl);
16e76bae	261
e52e712d	262	usb->devhdl = NULL;
16e76bae MS	263	sdi->status = SR_ST_INACTIVE;
	264
	265	return SR_OK;
	266	}
	267
584560f1	268	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	269	const struct sr_channel_group *cg)
16e76bae	270	{
e52e712d	271	struct dev_context *devc;
16e76bae MS	272	int ret;
16e76bae MS	273
53b4680f	274	(void)cg;
d3c74a6f	275
16e76bae	276	ret = SR_OK;
e52e712d MS	277	devc = sdi->priv;
e52e712d MS	278
16e76bae	279	switch (key) {
e52e712d MS	280	case SR_CONF_SAMPLERATE:
	281	*data = g_variant_new_uint64(devc->samplerate);
	282	break;
	283	case SR_CONF_CAPTURE_RATIO:
	284	*data = g_variant_new_uint64(devc->capture_ratio);
	285	break;
16e76bae MS	286	default:
	287	return SR_ERR_NA;
	288	}
	289
	290	return ret;
	291	}
	292
584560f1	293	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	294	const struct sr_channel_group *cg)
16e76bae	295	{
e52e712d	296	uint64_t samplerate, limit_samples, capture_ratio;
16e76bae MS	297	int ret;
16e76bae MS	298
53b4680f	299	(void)cg;
d3c74a6f	300
16e76bae MS	301	if (sdi->status != SR_ST_ACTIVE)
	302	return SR_ERR_DEV_CLOSED;
	303
16e76bae	304	switch (key) {
e52e712d MS	305	case SR_CONF_LIMIT_SAMPLES:
e52e712d MS	306	limit_samples = g_variant_get_uint64(data);
79914b3a	307	ret = sl2_set_limit_samples(sdi, limit_samples);
e52e712d MS	308	break;
	309	case SR_CONF_SAMPLERATE:
	310	samplerate = g_variant_get_uint64(data);
79914b3a	311	ret = sl2_set_samplerate(sdi, samplerate);
e52e712d MS	312	break;
	313	case SR_CONF_CAPTURE_RATIO:
	314	capture_ratio = g_variant_get_uint64(data);
79914b3a	315	ret = sl2_set_capture_ratio(sdi, capture_ratio);
e52e712d	316	break;
16e76bae	317	default:
e52e712d	318	return SR_ERR_NA;
16e76bae MS	319	}
	320
	321	return ret;
	322	}
	323
584560f1	324	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	325	const struct sr_channel_group *cg)
16e76bae	326	{
f0de2dd0	327	GVariant gvar, grange[2];
e52e712d	328	GVariantBuilder gvb;
16e76bae MS	329	int ret;
	330
	331	(void)sdi;
53b4680f	332	(void)cg;
16e76bae MS	333
	334	ret = SR_OK;
	335	switch (key) {
e52e712d	336	case SR_CONF_DEVICE_OPTIONS:
584560f1	337	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	338	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
e52e712d MS	339	break;
	340	case SR_CONF_SAMPLERATE:
	341	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	342	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
79914b3a	343	sl2_samplerates, ARRAY_SIZE(sl2_samplerates),
e52e712d MS	344	sizeof(uint64_t));
	345	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	346	*data = g_variant_builder_end(&gvb);
	347	break;
02d5c0d8 BV	348	case SR_CONF_TRIGGER_MATCH:
	349	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	350	trigger_matches, ARRAY_SIZE(trigger_matches),
	351	sizeof(int32_t));
e52e712d	352	break;
f0de2dd0 BV	353	case SR_CONF_LIMIT_SAMPLES:
	354	grange[0] = g_variant_new_uint64(0);
	355	grange[1] = g_variant_new_uint64(MAX_SAMPLES);
	356	*data = g_variant_new_tuple(grange, 2);
	357	break;
16e76bae MS	358	default:
	359	return SR_ERR_NA;
	360	}
	361
	362	return ret;
	363	}
	364
695dc859	365	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
16e76bae	366	{
4f840ce9	367	struct sr_dev_driver *di = sdi->driver;
e52e712d MS	368	struct drv_context *drvc;
	369	struct dev_context *devc;
	370	uint16_t trigger_bytes, tmp;
	371	unsigned int i, j;
	372	int ret;
16e76bae MS	373
	374	if (sdi->status != SR_ST_ACTIVE)
	375	return SR_ERR_DEV_CLOSED;
	376
e52e712d	377	devc = sdi->priv;
41812aca	378	drvc = di->context;
e52e712d	379
e52e712d MS	380	devc->wait_data_ready_locked = TRUE;
	381	devc->stopping_in_progress = FALSE;
	382	devc->transfer_error = FALSE;
	383	devc->samples_processed = 0;
	384	devc->channel = 0;
	385	devc->sample_packet = 0;
	386
	387	/*
	388	* The trigger must be configured first because the calculation of the
	389	* pre and post trigger samples depends on a configured trigger.
	390	*/
02d5c0d8	391	sl2_convert_trigger(sdi);
79914b3a	392	sl2_calculate_trigger_samples(sdi);
e52e712d MS	393
	394	trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes;
	395
	396	/* Calculate the number of expected sample packets. */
	397	devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES;
	398
	399	/* Round up the number of expected sample packets. */
	400	if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0)
	401	devc->num_sample_packets++;
	402
ba7dd8bb	403	devc->num_enabled_channels = 0;
e52e712d MS	404
e52e712d MS	405	/*
ba7dd8bb	406	* Count the number of enabled channels and number them for a sequential
e52e712d MS	407	* access.
e52e712d MS	408	*/
3f239f08	409	for (i = 0, j = 0; i < NUM_CHANNELS; i++) {
ba7dd8bb UH	410	if (devc->channels[i]->enabled) {
	411	devc->num_enabled_channels++;
	412	devc->channel_map[j] = i;
e52e712d MS	413	j++;
	414	}
	415	}
	416
ba7dd8bb	417	sr_dbg("Number of enabled channels: %i.", devc->num_enabled_channels);
e52e712d MS	418
	419	/* Set up the transfer buffer for the acquisition. */
	420	devc->xfer_data_out[0] = CMD_SAMPLE;
	421	devc->xfer_data_out[1] = 0x00;
	422
	423	tmp = GUINT16_TO_LE(devc->pre_trigger_bytes);
	424	memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp));
	425
	426	tmp = GUINT16_TO_LE(devc->post_trigger_bytes);
	427	memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp));
	428
	429	devc->xfer_data_out[6] = devc->samplerate_id;
	430	devc->xfer_data_out[7] = devc->trigger_type;
	431	devc->xfer_data_out[8] = devc->trigger_channel;
	432	devc->xfer_data_out[9] = 0x00;
	433
	434	tmp = GUINT16_TO_LE(devc->after_trigger_delay);
	435	memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp));
	436
e52e712d	437	if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) {
c824eb63	438	sr_err("Submit transfer failed: %s.", libusb_error_name(ret));
e52e712d MS	439	return SR_ERR;
	440	}
	441
102f1239 BV	442	usb_source_add(sdi->session, drvc->sr_ctx, 100,
102f1239 BV	443	ikalogic_scanalogic2_receive_data, (void *)sdi);
e52e712d MS	444
	445	sr_dbg("Acquisition started successfully.");
	446
695dc859	447	std_session_send_df_header(sdi, LOG_PREFIX);
e52e712d MS	448
e52e712d MS	449	devc->next_state = STATE_SAMPLE;
16e76bae MS	450
	451	return SR_OK;
	452	}
	453
695dc859	454	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
16e76bae	455	{
16e76bae MS	456	if (sdi->status != SR_ST_ACTIVE)
	457	return SR_ERR_DEV_CLOSED;
	458
e52e712d MS	459	sr_dbg("Stopping acquisition.");
	460
	461	sdi->status = SR_ST_STOPPING;
16e76bae MS	462
	463	return SR_OK;
	464	}
	465
	466	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
	467	.name = "ikalogic-scanalogic2",
e52e712d	468	.longname = "IKALOGIC Scanalogic-2",
16e76bae MS	469	.api_version = 1,
16e76bae MS	470	.init = init,
700d6b64	471	.cleanup = std_cleanup,
16e76bae	472	.scan = scan,
c01bf34c	473	.dev_list = std_dev_list,
16e76bae MS	474	.dev_clear = dev_clear,
	475	.config_get = config_get,
	476	.config_set = config_set,
	477	.config_list = config_list,
	478	.dev_open = dev_open,
	479	.dev_close = dev_close,
	480	.dev_acquisition_start = dev_acquisition_start,
	481	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	482	.context = NULL,
16e76bae	483	};