[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 "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[NUM_CHANNELS + 1] = {
	"0", "1", "2", "3",
	NULL,
};

SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
static struct sr_dev_driver *di = &ikalogic_scanalogic2_driver_info;

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

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

	(void)options;

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

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

	if (usb_devices == NULL)
		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;
		}

		if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
			sr_err("Device instance malloc failed.");
			sr_usb_dev_inst_free(usb);
			continue;
		}

		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 = sr_dev_inst_new();
		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; channel_names[i]; i++) {
			ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
				channel_names[i]);
			sdi->channels = g_slist_append(sdi->channels, ch);
			devc->channels[i] = ch;
		}

		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 GSList *dev_list(void)
{
	return ((struct drv_context *)(di->priv))->instances;
}

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(void)
{
	return std_dev_clear(di, &clear_dev_context);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	uint8_t buffer[PACKET_LENGTH];
	int ret;

	if (!(drvc = di->priv)) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	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);

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

	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;

	if (!di->priv) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	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 cleanup(void)
{
	return dev_clear();
}

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;

	ret = SR_OK;

	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, void *cb_data)
{
	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->priv;

	devc->cb_data = cb_data;
	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.");

	/* Send header packet to the session bus. */
	std_session_send_df_header(cb_data, LOG_PREFIX);

	devc->next_state = STATE_SAMPLE;

	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;

	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 = 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
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
	20	#include "protocol.h"
	21
f254bc4b	22	static const uint32_t devopts[] = {
e52e712d	23	SR_CONF_LOGIC_ANALYZER,
5827f61b BV	24	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET \| SR_CONF_LIST,
	25	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	26	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	27	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
e52e712d MS	28	};
e52e712d MS	29
02d5c0d8 BV	30	static const int32_t trigger_matches[] = {
	31	SR_TRIGGER_RISING,
	32	SR_TRIGGER_FALLING,
	33	SR_TRIGGER_EDGE,
	34	};
	35
79914b3a	36	SR_PRIV const uint64_t sl2_samplerates[NUM_SAMPLERATES] = {
e52e712d MS	37	SR_KHZ(1.25),
	38	SR_KHZ(10),
	39	SR_KHZ(50),
	40	SR_KHZ(100),
	41	SR_KHZ(250),
	42	SR_KHZ(500),
	43	SR_MHZ(1),
	44	SR_MHZ(2.5),
	45	SR_MHZ(5),
	46	SR_MHZ(10),
c824eb63	47	SR_MHZ(20),
e52e712d MS	48	};
e52e712d MS	49
3f239f08	50	static const char *channel_names[NUM_CHANNELS + 1] = {
e52e712d	51	"0", "1", "2", "3",
c824eb63	52	NULL,
e52e712d MS	53	};
e52e712d MS	54
16e76bae MS	55	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
	56	static struct sr_dev_driver *di = &ikalogic_scanalogic2_driver_info;
	57
16e76bae MS	58	static int init(struct sr_context *sr_ctx)
16e76bae MS	59	{
e52e712d	60	return std_init(sr_ctx, di, LOG_PREFIX);
16e76bae MS	61	}
	62
	63	static GSList scan(GSList options)
	64	{
e52e712d	65	GSList usb_devices, devices, *l;
16e76bae	66	struct drv_context *drvc;
e52e712d	67	struct sr_dev_inst *sdi;
ba7dd8bb	68	struct sr_channel *ch;
e52e712d MS	69	struct dev_context *devc;
	70	struct sr_usb_dev_inst *usb;
	71	struct device_info dev_info;
65340dd5	72	int ret, i;
16e76bae MS	73
	74	(void)options;
	75
	76	devices = NULL;
	77	drvc = di->priv;
	78	drvc->instances = NULL;
e52e712d MS	79
	80	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
	81
	82	if (usb_devices == NULL)
	83	return NULL;
	84
c824eb63	85	for (l = usb_devices; l; l = l->next) {
e52e712d MS	86	usb = l->data;
e52e712d MS	87
79914b3a UH	88	if ((ret = sl2_get_device_info(*usb, &dev_info)) < 0) {
79914b3a UH	89	sr_warn("Failed to get device information: %d.", ret);
e52e712d MS	90	sr_usb_dev_inst_free(usb);
	91	continue;
	92	}
	93
c824eb63	94	if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
e52e712d MS	95	sr_err("Device instance malloc failed.");
	96	sr_usb_dev_inst_free(usb);
	97	continue;
	98	}
	99
	100	if (!(devc->xfer_in = libusb_alloc_transfer(0))) {
	101	sr_err("Transfer malloc failed.");
	102	sr_usb_dev_inst_free(usb);
	103	g_free(devc);
	104	continue;
	105	}
	106
	107	if (!(devc->xfer_out = libusb_alloc_transfer(0))) {
	108	sr_err("Transfer malloc failed.");
	109	sr_usb_dev_inst_free(usb);
	110	libusb_free_transfer(devc->xfer_in);
	111	g_free(devc);
	112	continue;
	113	}
	114
0af636be UH	115	sdi = sr_dev_inst_new();
	116	sdi->status = SR_ST_INACTIVE;
	117	sdi->vendor = g_strdup(VENDOR_NAME);
	118	sdi->model = g_strdup(MODEL_NAME);
	119	sdi->version = g_strdup_printf("%u.%u", dev_info.fw_ver_major, dev_info.fw_ver_minor);
	120	sdi->serial_num = g_strdup_printf("%d", dev_info.serial);
e52e712d MS	121	sdi->priv = devc;
	122	sdi->driver = di;
	123	sdi->inst_type = SR_INST_USB;
	124	sdi->conn = usb;
	125
ba7dd8bb	126	for (i = 0; channel_names[i]; i++) {
3f239f08	127	ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
ba7dd8bb UH	128	channel_names[i]);
	129	sdi->channels = g_slist_append(sdi->channels, ch);
	130	devc->channels[i] = ch;
e52e712d MS	131	}
	132
	133	devc->state = STATE_IDLE;
	134	devc->next_state = STATE_IDLE;
	135
	136	/* Set default samplerate. */
79914b3a	137	sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE);
e52e712d MS	138
	139	/* Set default capture ratio. */
	140	devc->capture_ratio = 0;
	141
	142	/* Set default after trigger delay. */
	143	devc->after_trigger_delay = 0;
	144
	145	memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE +
	146	PACKET_LENGTH);
	147	memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE +
	148	PACKET_LENGTH);
	149
	150	libusb_fill_control_setup(devc->xfer_buf_in,
fb8d593c	151	USB_REQUEST_TYPE_IN, USB_HID_GET_REPORT,
e52e712d MS	152	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	153	PACKET_LENGTH);
	154	libusb_fill_control_setup(devc->xfer_buf_out,
	155	USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT,
	156	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	157	PACKET_LENGTH);
	158
	159	devc->xfer_data_in = devc->xfer_buf_in +
	160	LIBUSB_CONTROL_SETUP_SIZE;
	161	devc->xfer_data_out = devc->xfer_buf_out +
	162	LIBUSB_CONTROL_SETUP_SIZE;
	163
	164	drvc->instances = g_slist_append(drvc->instances, sdi);
	165	devices = g_slist_append(devices, sdi);
e52e712d	166	}
16e76bae	167
e52e712d	168	g_slist_free(usb_devices);
16e76bae MS	169
	170	return devices;
	171	}
	172
	173	static GSList *dev_list(void)
	174	{
c824eb63	175	return ((struct drv_context *)(di->priv))->instances;
16e76bae MS	176	}
16e76bae MS	177
e52e712d MS	178	static void clear_dev_context(void *priv)
e52e712d MS	179	{
c824eb63 UH	180	struct dev_context *devc;
	181
	182	devc = priv;
e52e712d	183
c824eb63	184	sr_dbg("Device context cleared.");
e52e712d MS	185
	186	libusb_free_transfer(devc->xfer_in);
	187	libusb_free_transfer(devc->xfer_out);
	188	g_free(devc);
	189	}
	190
16e76bae MS	191	static int dev_clear(void)
16e76bae MS	192	{
e52e712d	193	return std_dev_clear(di, &clear_dev_context);
16e76bae MS	194	}
	195
	196	static int dev_open(struct sr_dev_inst *sdi)
	197	{
e52e712d MS	198	struct drv_context *drvc;
	199	struct dev_context *devc;
	200	struct sr_usb_dev_inst *usb;
	201	uint8_t buffer[PACKET_LENGTH];
	202	int ret;
	203
	204	if (!(drvc = di->priv)) {
	205	sr_err("Driver was not initialized.");
	206	return SR_ERR;
	207	}
	208
	209	usb = sdi->conn;
	210	devc = sdi->priv;
16e76bae	211
e52e712d MS	212	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	213	return SR_ERR;
	214
	215	/*
	216	* Determine if a kernel driver is active on this interface and, if so,
	217	* detach it.
	218	*/
	219	if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
	220	ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
e52e712d	221	if (ret < 0) {
9526f2d4	222	sr_err("Failed to detach kernel driver: %s.",
e52e712d MS	223	libusb_error_name(ret));
	224	return SR_ERR;
	225	}
	226	}
	227
79914b3a	228	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) {
e52e712d MS	229	sr_err("Failed to claim interface: %s.",
	230	libusb_error_name(ret));
	231	return SR_ERR;
	232	}
	233
	234	libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
79914b3a	235	devc->xfer_buf_in, sl2_receive_transfer_in,
e52e712d MS	236	sdi, USB_TIMEOUT);
	237
	238	libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
79914b3a	239	devc->xfer_buf_out, sl2_receive_transfer_out,
e52e712d MS	240	sdi, USB_TIMEOUT);
	241
	242	memset(buffer, 0, sizeof(buffer));
	243
	244	buffer[0] = CMD_RESET;
79914b3a	245	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	246	sr_err("Device reset failed: %s.", libusb_error_name(ret));
	247	return SR_ERR;
	248	}
	249
	250	/*
	251	* Set the device to idle state. If the device is not in idle state it
c824eb63 UH	252	* possibly will reset itself after a few seconds without being used
c824eb63 UH	253	* and thereby close the connection.
e52e712d MS	254	*/
e52e712d MS	255	buffer[0] = CMD_IDLE;
79914b3a	256	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	257	sr_err("Failed to set device in idle state: %s.",
	258	libusb_error_name(ret));
	259	return SR_ERR;
	260	}
16e76bae MS	261
	262	sdi->status = SR_ST_ACTIVE;
	263
	264	return SR_OK;
	265	}
	266
	267	static int dev_close(struct sr_dev_inst *sdi)
	268	{
e52e712d MS	269	struct sr_usb_dev_inst *usb;
	270
	271	if (!di->priv) {
	272	sr_err("Driver was not initialized.");
	273	return SR_ERR;
	274	}
	275
	276	usb = sdi->conn;
	277
	278	if (!usb->devhdl)
	279	return SR_OK;
16e76bae	280
e52e712d MS	281	libusb_release_interface(usb->devhdl, USB_INTERFACE);
e52e712d MS	282	libusb_close(usb->devhdl);
16e76bae	283
e52e712d	284	usb->devhdl = NULL;
16e76bae MS	285	sdi->status = SR_ST_INACTIVE;
	286
	287	return SR_OK;
	288	}
	289
	290	static int cleanup(void)
	291	{
c824eb63	292	return dev_clear();
16e76bae MS	293	}
16e76bae MS	294
584560f1	295	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	296	const struct sr_channel_group *cg)
16e76bae	297	{
e52e712d	298	struct dev_context *devc;
16e76bae MS	299	int ret;
16e76bae MS	300
53b4680f	301	(void)cg;
d3c74a6f	302
16e76bae	303	ret = SR_OK;
e52e712d MS	304	devc = sdi->priv;
e52e712d MS	305
16e76bae	306	switch (key) {
e52e712d MS	307	case SR_CONF_SAMPLERATE:
	308	*data = g_variant_new_uint64(devc->samplerate);
	309	break;
	310	case SR_CONF_CAPTURE_RATIO:
	311	*data = g_variant_new_uint64(devc->capture_ratio);
	312	break;
16e76bae MS	313	default:
	314	return SR_ERR_NA;
	315	}
	316
	317	return ret;
	318	}
	319
584560f1	320	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	321	const struct sr_channel_group *cg)
16e76bae	322	{
e52e712d	323	uint64_t samplerate, limit_samples, capture_ratio;
16e76bae MS	324	int ret;
16e76bae MS	325
53b4680f	326	(void)cg;
d3c74a6f	327
16e76bae MS	328	if (sdi->status != SR_ST_ACTIVE)
	329	return SR_ERR_DEV_CLOSED;
	330
	331	ret = SR_OK;
e52e712d	332
16e76bae	333	switch (key) {
e52e712d MS	334	case SR_CONF_LIMIT_SAMPLES:
e52e712d MS	335	limit_samples = g_variant_get_uint64(data);
79914b3a	336	ret = sl2_set_limit_samples(sdi, limit_samples);
e52e712d MS	337	break;
	338	case SR_CONF_SAMPLERATE:
	339	samplerate = g_variant_get_uint64(data);
79914b3a	340	ret = sl2_set_samplerate(sdi, samplerate);
e52e712d MS	341	break;
	342	case SR_CONF_CAPTURE_RATIO:
	343	capture_ratio = g_variant_get_uint64(data);
79914b3a	344	ret = sl2_set_capture_ratio(sdi, capture_ratio);
e52e712d	345	break;
16e76bae	346	default:
e52e712d	347	return SR_ERR_NA;
16e76bae MS	348	}
	349
	350	return ret;
	351	}
	352
584560f1	353	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	354	const struct sr_channel_group *cg)
16e76bae	355	{
f0de2dd0	356	GVariant gvar, grange[2];
e52e712d	357	GVariantBuilder gvb;
16e76bae MS	358	int ret;
	359
	360	(void)sdi;
53b4680f	361	(void)cg;
16e76bae MS	362
16e76bae MS	363	ret = SR_OK;
e52e712d	364
16e76bae	365	switch (key) {
e52e712d	366	case SR_CONF_DEVICE_OPTIONS:
584560f1	367	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	368	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
e52e712d MS	369	break;
	370	case SR_CONF_SAMPLERATE:
	371	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	372	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
79914b3a	373	sl2_samplerates, ARRAY_SIZE(sl2_samplerates),
e52e712d MS	374	sizeof(uint64_t));
	375	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	376	*data = g_variant_builder_end(&gvb);
	377	break;
02d5c0d8 BV	378	case SR_CONF_TRIGGER_MATCH:
	379	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	380	trigger_matches, ARRAY_SIZE(trigger_matches),
	381	sizeof(int32_t));
e52e712d	382	break;
f0de2dd0 BV	383	case SR_CONF_LIMIT_SAMPLES:
	384	grange[0] = g_variant_new_uint64(0);
	385	grange[1] = g_variant_new_uint64(MAX_SAMPLES);
	386	*data = g_variant_new_tuple(grange, 2);
	387	break;
16e76bae MS	388	default:
	389	return SR_ERR_NA;
	390	}
	391
	392	return ret;
	393	}
	394
e52e712d	395	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
16e76bae	396	{
e52e712d MS	397	struct drv_context *drvc;
	398	struct dev_context *devc;
	399	uint16_t trigger_bytes, tmp;
	400	unsigned int i, j;
	401	int ret;
16e76bae MS	402
	403	if (sdi->status != SR_ST_ACTIVE)
	404	return SR_ERR_DEV_CLOSED;
	405
e52e712d MS	406	devc = sdi->priv;
	407	drvc = di->priv;
	408
	409	devc->cb_data = cb_data;
	410	devc->wait_data_ready_locked = TRUE;
	411	devc->stopping_in_progress = FALSE;
	412	devc->transfer_error = FALSE;
	413	devc->samples_processed = 0;
	414	devc->channel = 0;
	415	devc->sample_packet = 0;
	416
	417	/*
	418	* The trigger must be configured first because the calculation of the
	419	* pre and post trigger samples depends on a configured trigger.
	420	*/
02d5c0d8	421	sl2_convert_trigger(sdi);
79914b3a	422	sl2_calculate_trigger_samples(sdi);
e52e712d MS	423
	424	trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes;
	425
	426	/* Calculate the number of expected sample packets. */
	427	devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES;
	428
	429	/* Round up the number of expected sample packets. */
	430	if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0)
	431	devc->num_sample_packets++;
	432
ba7dd8bb	433	devc->num_enabled_channels = 0;
e52e712d MS	434
e52e712d MS	435	/*
ba7dd8bb	436	* Count the number of enabled channels and number them for a sequential
e52e712d MS	437	* access.
e52e712d MS	438	*/
3f239f08	439	for (i = 0, j = 0; i < NUM_CHANNELS; i++) {
ba7dd8bb UH	440	if (devc->channels[i]->enabled) {
	441	devc->num_enabled_channels++;
	442	devc->channel_map[j] = i;
e52e712d MS	443	j++;
	444	}
	445	}
	446
ba7dd8bb	447	sr_dbg("Number of enabled channels: %i.", devc->num_enabled_channels);
e52e712d MS	448
	449	/* Set up the transfer buffer for the acquisition. */
	450	devc->xfer_data_out[0] = CMD_SAMPLE;
	451	devc->xfer_data_out[1] = 0x00;
	452
	453	tmp = GUINT16_TO_LE(devc->pre_trigger_bytes);
	454	memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp));
	455
	456	tmp = GUINT16_TO_LE(devc->post_trigger_bytes);
	457	memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp));
	458
	459	devc->xfer_data_out[6] = devc->samplerate_id;
	460	devc->xfer_data_out[7] = devc->trigger_type;
	461	devc->xfer_data_out[8] = devc->trigger_channel;
	462	devc->xfer_data_out[9] = 0x00;
	463
	464	tmp = GUINT16_TO_LE(devc->after_trigger_delay);
	465	memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp));
	466
e52e712d	467	if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) {
c824eb63	468	sr_err("Submit transfer failed: %s.", libusb_error_name(ret));
e52e712d MS	469	return SR_ERR;
	470	}
	471
102f1239 BV	472	usb_source_add(sdi->session, drvc->sr_ctx, 100,
102f1239 BV	473	ikalogic_scanalogic2_receive_data, (void *)sdi);
e52e712d MS	474
	475	sr_dbg("Acquisition started successfully.");
	476
	477	/* Send header packet to the session bus. */
	478	std_session_send_df_header(cb_data, LOG_PREFIX);
	479
	480	devc->next_state = STATE_SAMPLE;
16e76bae MS	481
	482	return SR_OK;
	483	}
	484
	485	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	486	{
	487	(void)cb_data;
	488
	489	if (sdi->status != SR_ST_ACTIVE)
	490	return SR_ERR_DEV_CLOSED;
	491
e52e712d MS	492	sr_dbg("Stopping acquisition.");
	493
	494	sdi->status = SR_ST_STOPPING;
16e76bae MS	495
	496	return SR_OK;
	497	}
	498
	499	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
	500	.name = "ikalogic-scanalogic2",
e52e712d	501	.longname = "IKALOGIC Scanalogic-2",
16e76bae MS	502	.api_version = 1,
	503	.init = init,
	504	.cleanup = cleanup,
	505	.scan = scan,
	506	.dev_list = dev_list,
	507	.dev_clear = dev_clear,
	508	.config_get = config_get,
	509	.config_set = config_set,
	510	.config_list = config_list,
	511	.dev_open = dev_open,
	512	.dev_close = dev_close,
	513	.dev_acquisition_start = dev_acquisition_start,
	514	.dev_acquisition_stop = dev_acquisition_stop,
	515	.priv = NULL,
	516	};