[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",
};

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(di, *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;
}

static struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
	.name = "ikalogic-scanalogic2",
	.longname = "IKALOGIC Scanalogic-2",
	.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(ikalogic_scanalogic2_driver_info);
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
4f840ce9	55	static GSList scan(struct sr_dev_driver di, GSList *options)
16e76bae	56	{
e52e712d	57	GSList usb_devices, devices, *l;
16e76bae	58	struct drv_context *drvc;
e52e712d	59	struct sr_dev_inst *sdi;
e52e712d MS	60	struct dev_context *devc;
	61	struct sr_usb_dev_inst *usb;
	62	struct device_info dev_info;
dcd438ee UH	63	unsigned int i;
dcd438ee UH	64	int ret;
16e76bae MS	65
	66	(void)options;
	67
	68	devices = NULL;
41812aca	69	drvc = di->context;
16e76bae	70	drvc->instances = NULL;
e52e712d MS	71
	72	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
	73
98fec29e	74	if (!usb_devices)
e52e712d MS	75	return NULL;
e52e712d MS	76
c824eb63	77	for (l = usb_devices; l; l = l->next) {
e52e712d MS	78	usb = l->data;
e52e712d MS	79
e32862eb	80	if ((ret = sl2_get_device_info(di, *usb, &dev_info)) < 0) {
79914b3a	81	sr_warn("Failed to get device information: %d.", ret);
e52e712d MS	82	sr_usb_dev_inst_free(usb);
	83	continue;
	84	}
	85
f57d8ffe	86	devc = g_malloc0(sizeof(struct dev_context));
e52e712d MS	87
	88	if (!(devc->xfer_in = libusb_alloc_transfer(0))) {
	89	sr_err("Transfer malloc failed.");
	90	sr_usb_dev_inst_free(usb);
	91	g_free(devc);
	92	continue;
	93	}
	94
	95	if (!(devc->xfer_out = libusb_alloc_transfer(0))) {
	96	sr_err("Transfer malloc failed.");
	97	sr_usb_dev_inst_free(usb);
	98	libusb_free_transfer(devc->xfer_in);
	99	g_free(devc);
	100	continue;
	101	}
	102
aac29cc1	103	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	104	sdi->status = SR_ST_INACTIVE;
	105	sdi->vendor = g_strdup(VENDOR_NAME);
	106	sdi->model = g_strdup(MODEL_NAME);
	107	sdi->version = g_strdup_printf("%u.%u", dev_info.fw_ver_major, dev_info.fw_ver_minor);
	108	sdi->serial_num = g_strdup_printf("%d", dev_info.serial);
e52e712d MS	109	sdi->priv = devc;
	110	sdi->driver = di;
	111	sdi->inst_type = SR_INST_USB;
	112	sdi->conn = usb;
	113
0f34cb47 UH	114	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
	115	devc->channels[i] = sr_channel_new(sdi, i,
	116	SR_CHANNEL_LOGIC, TRUE, channel_names[i]);
e52e712d MS	117
	118	devc->state = STATE_IDLE;
	119	devc->next_state = STATE_IDLE;
	120
	121	/* Set default samplerate. */
79914b3a	122	sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE);
e52e712d MS	123
	124	/* Set default capture ratio. */
	125	devc->capture_ratio = 0;
	126
	127	/* Set default after trigger delay. */
	128	devc->after_trigger_delay = 0;
	129
	130	memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE +
	131	PACKET_LENGTH);
	132	memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE +
	133	PACKET_LENGTH);
	134
	135	libusb_fill_control_setup(devc->xfer_buf_in,
fb8d593c	136	USB_REQUEST_TYPE_IN, USB_HID_GET_REPORT,
e52e712d MS	137	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	138	PACKET_LENGTH);
	139	libusb_fill_control_setup(devc->xfer_buf_out,
	140	USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT,
	141	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	142	PACKET_LENGTH);
	143
	144	devc->xfer_data_in = devc->xfer_buf_in +
	145	LIBUSB_CONTROL_SETUP_SIZE;
	146	devc->xfer_data_out = devc->xfer_buf_out +
	147	LIBUSB_CONTROL_SETUP_SIZE;
	148
	149	drvc->instances = g_slist_append(drvc->instances, sdi);
	150	devices = g_slist_append(devices, sdi);
e52e712d	151	}
16e76bae	152
e52e712d	153	g_slist_free(usb_devices);
16e76bae MS	154
	155	return devices;
	156	}
	157
e52e712d MS	158	static void clear_dev_context(void *priv)
e52e712d MS	159	{
c824eb63 UH	160	struct dev_context *devc;
	161
	162	devc = priv;
e52e712d	163
c824eb63	164	sr_dbg("Device context cleared.");
e52e712d MS	165
	166	libusb_free_transfer(devc->xfer_in);
	167	libusb_free_transfer(devc->xfer_out);
	168	g_free(devc);
	169	}
	170
4f840ce9	171	static int dev_clear(const struct sr_dev_driver *di)
16e76bae	172	{
e52e712d	173	return std_dev_clear(di, &clear_dev_context);
16e76bae MS	174	}
	175
	176	static int dev_open(struct sr_dev_inst *sdi)
	177	{
4f840ce9	178	struct sr_dev_driver *di = sdi->driver;
efa98402	179	struct drv_context *drvc = di->context;
e52e712d MS	180	struct dev_context *devc;
	181	struct sr_usb_dev_inst *usb;
	182	uint8_t buffer[PACKET_LENGTH];
	183	int ret;
	184
e52e712d MS	185	usb = sdi->conn;
e52e712d MS	186	devc = sdi->priv;
16e76bae	187
e52e712d MS	188	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	189	return SR_ERR;
	190
	191	/*
	192	* Determine if a kernel driver is active on this interface and, if so,
	193	* detach it.
	194	*/
	195	if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
	196	ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
e52e712d	197	if (ret < 0) {
9526f2d4	198	sr_err("Failed to detach kernel driver: %s.",
e52e712d MS	199	libusb_error_name(ret));
	200	return SR_ERR;
	201	}
	202	}
	203
79914b3a	204	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) {
e52e712d MS	205	sr_err("Failed to claim interface: %s.",
	206	libusb_error_name(ret));
	207	return SR_ERR;
	208	}
	209
	210	libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
79914b3a	211	devc->xfer_buf_in, sl2_receive_transfer_in,
1a46cc62	212	sdi, USB_TIMEOUT_MS);
e52e712d MS	213
e52e712d MS	214	libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
79914b3a	215	devc->xfer_buf_out, sl2_receive_transfer_out,
1a46cc62	216	sdi, USB_TIMEOUT_MS);
e52e712d MS	217
	218	memset(buffer, 0, sizeof(buffer));
	219
	220	buffer[0] = CMD_RESET;
79914b3a	221	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	222	sr_err("Device reset failed: %s.", libusb_error_name(ret));
	223	return SR_ERR;
	224	}
	225
	226	/*
	227	* Set the device to idle state. If the device is not in idle state it
c824eb63 UH	228	* possibly will reset itself after a few seconds without being used
c824eb63 UH	229	* and thereby close the connection.
e52e712d MS	230	*/
e52e712d MS	231	buffer[0] = CMD_IDLE;
79914b3a	232	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	233	sr_err("Failed to set device in idle state: %s.",
	234	libusb_error_name(ret));
	235	return SR_ERR;
	236	}
16e76bae MS	237
	238	sdi->status = SR_ST_ACTIVE;
	239
	240	return SR_OK;
	241	}
	242
	243	static int dev_close(struct sr_dev_inst *sdi)
	244	{
e52e712d MS	245	struct sr_usb_dev_inst *usb;
e52e712d MS	246
e52e712d MS	247	usb = sdi->conn;
	248
	249	if (!usb->devhdl)
	250	return SR_OK;
16e76bae	251
e52e712d MS	252	libusb_release_interface(usb->devhdl, USB_INTERFACE);
e52e712d MS	253	libusb_close(usb->devhdl);
16e76bae	254
e52e712d	255	usb->devhdl = NULL;
16e76bae MS	256	sdi->status = SR_ST_INACTIVE;
	257
	258	return SR_OK;
	259	}
	260
584560f1	261	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	262	const struct sr_channel_group *cg)
16e76bae	263	{
e52e712d	264	struct dev_context *devc;
16e76bae MS	265	int ret;
16e76bae MS	266
53b4680f	267	(void)cg;
d3c74a6f	268
16e76bae	269	ret = SR_OK;
e52e712d MS	270	devc = sdi->priv;
e52e712d MS	271
16e76bae	272	switch (key) {
e52e712d MS	273	case SR_CONF_SAMPLERATE:
	274	*data = g_variant_new_uint64(devc->samplerate);
	275	break;
	276	case SR_CONF_CAPTURE_RATIO:
	277	*data = g_variant_new_uint64(devc->capture_ratio);
	278	break;
16e76bae MS	279	default:
	280	return SR_ERR_NA;
	281	}
	282
	283	return ret;
	284	}
	285
584560f1	286	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	287	const struct sr_channel_group *cg)
16e76bae	288	{
e52e712d	289	uint64_t samplerate, limit_samples, capture_ratio;
16e76bae MS	290	int ret;
16e76bae MS	291
53b4680f	292	(void)cg;
d3c74a6f	293
16e76bae MS	294	if (sdi->status != SR_ST_ACTIVE)
	295	return SR_ERR_DEV_CLOSED;
	296
16e76bae	297	switch (key) {
e52e712d MS	298	case SR_CONF_LIMIT_SAMPLES:
e52e712d MS	299	limit_samples = g_variant_get_uint64(data);
79914b3a	300	ret = sl2_set_limit_samples(sdi, limit_samples);
e52e712d MS	301	break;
	302	case SR_CONF_SAMPLERATE:
	303	samplerate = g_variant_get_uint64(data);
79914b3a	304	ret = sl2_set_samplerate(sdi, samplerate);
e52e712d MS	305	break;
	306	case SR_CONF_CAPTURE_RATIO:
	307	capture_ratio = g_variant_get_uint64(data);
79914b3a	308	ret = sl2_set_capture_ratio(sdi, capture_ratio);
e52e712d	309	break;
16e76bae	310	default:
e52e712d	311	return SR_ERR_NA;
16e76bae MS	312	}
	313
	314	return ret;
	315	}
	316
584560f1	317	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	318	const struct sr_channel_group *cg)
16e76bae	319	{
f0de2dd0	320	GVariant gvar, grange[2];
e52e712d	321	GVariantBuilder gvb;
16e76bae MS	322	int ret;
	323
	324	(void)sdi;
53b4680f	325	(void)cg;
16e76bae MS	326
	327	ret = SR_OK;
	328	switch (key) {
e52e712d	329	case SR_CONF_DEVICE_OPTIONS:
584560f1	330	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	331	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
e52e712d MS	332	break;
	333	case SR_CONF_SAMPLERATE:
	334	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	335	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
79914b3a	336	sl2_samplerates, ARRAY_SIZE(sl2_samplerates),
e52e712d MS	337	sizeof(uint64_t));
	338	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	339	*data = g_variant_builder_end(&gvb);
	340	break;
02d5c0d8 BV	341	case SR_CONF_TRIGGER_MATCH:
	342	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	343	trigger_matches, ARRAY_SIZE(trigger_matches),
	344	sizeof(int32_t));
e52e712d	345	break;
f0de2dd0 BV	346	case SR_CONF_LIMIT_SAMPLES:
	347	grange[0] = g_variant_new_uint64(0);
	348	grange[1] = g_variant_new_uint64(MAX_SAMPLES);
	349	*data = g_variant_new_tuple(grange, 2);
	350	break;
16e76bae MS	351	default:
	352	return SR_ERR_NA;
	353	}
	354
	355	return ret;
	356	}
	357
695dc859	358	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
16e76bae	359	{
4f840ce9	360	struct sr_dev_driver *di = sdi->driver;
e52e712d MS	361	struct drv_context *drvc;
	362	struct dev_context *devc;
	363	uint16_t trigger_bytes, tmp;
	364	unsigned int i, j;
	365	int ret;
16e76bae MS	366
	367	if (sdi->status != SR_ST_ACTIVE)
	368	return SR_ERR_DEV_CLOSED;
	369
e52e712d	370	devc = sdi->priv;
41812aca	371	drvc = di->context;
e52e712d	372
e52e712d MS	373	devc->wait_data_ready_locked = TRUE;
	374	devc->stopping_in_progress = FALSE;
	375	devc->transfer_error = FALSE;
	376	devc->samples_processed = 0;
	377	devc->channel = 0;
	378	devc->sample_packet = 0;
	379
	380	/*
	381	* The trigger must be configured first because the calculation of the
	382	* pre and post trigger samples depends on a configured trigger.
	383	*/
02d5c0d8	384	sl2_convert_trigger(sdi);
79914b3a	385	sl2_calculate_trigger_samples(sdi);
e52e712d MS	386
	387	trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes;
	388
	389	/* Calculate the number of expected sample packets. */
	390	devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES;
	391
	392	/* Round up the number of expected sample packets. */
	393	if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0)
	394	devc->num_sample_packets++;
	395
ba7dd8bb	396	devc->num_enabled_channels = 0;
e52e712d MS	397
e52e712d MS	398	/*
ba7dd8bb	399	* Count the number of enabled channels and number them for a sequential
e52e712d MS	400	* access.
e52e712d MS	401	*/
3f239f08	402	for (i = 0, j = 0; i < NUM_CHANNELS; i++) {
ba7dd8bb UH	403	if (devc->channels[i]->enabled) {
	404	devc->num_enabled_channels++;
	405	devc->channel_map[j] = i;
e52e712d MS	406	j++;
	407	}
	408	}
	409
ba7dd8bb	410	sr_dbg("Number of enabled channels: %i.", devc->num_enabled_channels);
e52e712d MS	411
	412	/* Set up the transfer buffer for the acquisition. */
	413	devc->xfer_data_out[0] = CMD_SAMPLE;
	414	devc->xfer_data_out[1] = 0x00;
	415
	416	tmp = GUINT16_TO_LE(devc->pre_trigger_bytes);
	417	memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp));
	418
	419	tmp = GUINT16_TO_LE(devc->post_trigger_bytes);
	420	memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp));
	421
	422	devc->xfer_data_out[6] = devc->samplerate_id;
	423	devc->xfer_data_out[7] = devc->trigger_type;
	424	devc->xfer_data_out[8] = devc->trigger_channel;
	425	devc->xfer_data_out[9] = 0x00;
	426
	427	tmp = GUINT16_TO_LE(devc->after_trigger_delay);
	428	memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp));
	429
e52e712d	430	if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) {
c824eb63	431	sr_err("Submit transfer failed: %s.", libusb_error_name(ret));
e52e712d MS	432	return SR_ERR;
	433	}
	434
102f1239 BV	435	usb_source_add(sdi->session, drvc->sr_ctx, 100,
102f1239 BV	436	ikalogic_scanalogic2_receive_data, (void *)sdi);
e52e712d MS	437
	438	sr_dbg("Acquisition started successfully.");
	439
695dc859	440	std_session_send_df_header(sdi, LOG_PREFIX);
e52e712d MS	441
e52e712d MS	442	devc->next_state = STATE_SAMPLE;
16e76bae MS	443
	444	return SR_OK;
	445	}
	446
695dc859	447	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
16e76bae	448	{
16e76bae MS	449	if (sdi->status != SR_ST_ACTIVE)
	450	return SR_ERR_DEV_CLOSED;
	451
e52e712d MS	452	sr_dbg("Stopping acquisition.");
	453
	454	sdi->status = SR_ST_STOPPING;
16e76bae MS	455
	456	return SR_OK;
	457	}
	458
dd5c48a6	459	static struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
16e76bae	460	.name = "ikalogic-scanalogic2",
e52e712d	461	.longname = "IKALOGIC Scanalogic-2",
16e76bae	462	.api_version = 1,
c2fdcc25	463	.init = std_init,
700d6b64	464	.cleanup = std_cleanup,
16e76bae	465	.scan = scan,
c01bf34c	466	.dev_list = std_dev_list,
16e76bae MS	467	.dev_clear = dev_clear,
	468	.config_get = config_get,
	469	.config_set = config_set,
	470	.config_list = config_list,
	471	.dev_open = dev_open,
	472	.dev_close = dev_close,
	473	.dev_acquisition_start = dev_acquisition_start,
	474	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	475	.context = NULL,
16e76bae	476	};
dd5c48a6	477	SR_REGISTER_DEV_DRIVER(ikalogic_scanalogic2_driver_info);