[libsigrok.git] / 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 int hwcaps[] = {
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_SAMPLERATE,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_TRIGGER_TYPE,
	SR_CONF_CAPTURE_RATIO,
};

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 *probe_names[NUM_PROBES + 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_probe *probe;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	struct device_info dev_info;
	int ret, device_index, i;
	char *fw_ver_str;

	(void)options;

	devices = NULL;
	drvc = di->priv;
	drvc->instances = NULL;
	device_index = 0;

	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;
		}

		fw_ver_str = g_strdup_printf("%u.%u", dev_info.fw_ver_major,
			dev_info.fw_ver_minor);
		if (!fw_ver_str) {
			sr_err("Firmware string malloc failed.");
			sr_usb_dev_inst_free(usb);
			libusb_free_transfer(devc->xfer_in);
			libusb_free_transfer(devc->xfer_out);
			g_free(devc);
			continue;
		}

		sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE, VENDOR_NAME,
			MODEL_NAME, fw_ver_str);
		g_free(fw_ver_str);
		if (!sdi) {
			sr_err("sr_dev_inst_new failed.");
			sr_usb_dev_inst_free(usb);
			libusb_free_transfer(devc->xfer_in);
			libusb_free_transfer(devc->xfer_out);
			g_free(devc);
			continue;
		}

		sdi->priv = devc;
		sdi->driver = di;
		sdi->inst_type = SR_INST_USB;
		sdi->conn = usb;

		for (i = 0; probe_names[i]; i++) {
			probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
				probe_names[i]);
			sdi->probes = g_slist_append(sdi->probes, probe);
			devc->probes[i] = probe;
		}

		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_SET_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);

		device_index++;
	}

	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(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	int ret;

	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(int key, GVariant *data, const struct sr_dev_inst *sdi)
{
	uint64_t samplerate, limit_samples, capture_ratio;
	int ret;

	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(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	GVariant *gvar;
	GVariantBuilder gvb;
	int ret;

	(void)sdi;

	ret = SR_OK;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, hwcaps,
			ARRAY_SIZE(hwcaps), sizeof(int32_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_TYPE:
		*data = g_variant_new_string(TRIGGER_TYPES);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
	const struct libusb_pollfd **pfd;
	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_configure_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_probes = 0;

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

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

	/* 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 (!(pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx))) {
		sr_err("libusb_get_pollfds failed.");
		return SR_ERR;
	}

	/* Count the number of file descriptors. */
	for (devc->num_usbfd = 0; pfd[devc->num_usbfd]; devc->num_usbfd++);

	if (!(devc->usbfd = g_try_malloc(devc->num_usbfd * sizeof(int)))) {
		sr_err("File descriptor array malloc failed.");
		free(pfd);
		return SR_ERR_MALLOC;
	}

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

	for (i = 0; i < devc->num_usbfd; i++) {
		sr_source_add(pfd[i]->fd, pfd[i]->events, 100,
			ikalogic_scanalogic2_receive_data, (void *)sdi);

		devc->usbfd[i] = pfd[i]->fd;
	}

	free(pfd);

	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
e52e712d MS	22	static const int hwcaps[] = {
	23	SR_CONF_LOGIC_ANALYZER,
	24	SR_CONF_SAMPLERATE,
	25	SR_CONF_LIMIT_SAMPLES,
	26	SR_CONF_TRIGGER_TYPE,
c824eb63	27	SR_CONF_CAPTURE_RATIO,
e52e712d MS	28	};
e52e712d MS	29
79914b3a	30	SR_PRIV const uint64_t sl2_samplerates[NUM_SAMPLERATES] = {
e52e712d MS	31	SR_KHZ(1.25),
	32	SR_KHZ(10),
	33	SR_KHZ(50),
	34	SR_KHZ(100),
	35	SR_KHZ(250),
	36	SR_KHZ(500),
	37	SR_MHZ(1),
	38	SR_MHZ(2.5),
	39	SR_MHZ(5),
	40	SR_MHZ(10),
c824eb63	41	SR_MHZ(20),
e52e712d MS	42	};
	43
	44	static const char *probe_names[NUM_PROBES + 1] = {
	45	"0", "1", "2", "3",
c824eb63	46	NULL,
e52e712d MS	47	};
e52e712d MS	48
16e76bae MS	49	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
	50	static struct sr_dev_driver *di = &ikalogic_scanalogic2_driver_info;
	51
16e76bae MS	52	static int init(struct sr_context *sr_ctx)
16e76bae MS	53	{
e52e712d	54	return std_init(sr_ctx, di, LOG_PREFIX);
16e76bae MS	55	}
	56
	57	static GSList scan(GSList options)
	58	{
e52e712d	59	GSList usb_devices, devices, *l;
16e76bae	60	struct drv_context *drvc;
e52e712d MS	61	struct sr_dev_inst *sdi;
	62	struct sr_probe *probe;
	63	struct dev_context *devc;
	64	struct sr_usb_dev_inst *usb;
	65	struct device_info dev_info;
	66	int ret, device_index, i;
	67	char *fw_ver_str;
16e76bae MS	68
	69	(void)options;
	70
	71	devices = NULL;
	72	drvc = di->priv;
	73	drvc->instances = NULL;
e52e712d MS	74	device_index = 0;
	75
	76	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
	77
	78	if (usb_devices == NULL)
	79	return NULL;
	80
c824eb63	81	for (l = usb_devices; l; l = l->next) {
e52e712d MS	82	usb = l->data;
e52e712d MS	83
79914b3a UH	84	if ((ret = sl2_get_device_info(*usb, &dev_info)) < 0) {
79914b3a UH	85	sr_warn("Failed to get device information: %d.", ret);
e52e712d MS	86	sr_usb_dev_inst_free(usb);
	87	continue;
	88	}
	89
c824eb63	90	if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
e52e712d MS	91	sr_err("Device instance malloc failed.");
	92	sr_usb_dev_inst_free(usb);
	93	continue;
	94	}
	95
	96	if (!(devc->xfer_in = libusb_alloc_transfer(0))) {
	97	sr_err("Transfer malloc failed.");
	98	sr_usb_dev_inst_free(usb);
	99	g_free(devc);
	100	continue;
	101	}
	102
	103	if (!(devc->xfer_out = libusb_alloc_transfer(0))) {
	104	sr_err("Transfer malloc failed.");
	105	sr_usb_dev_inst_free(usb);
	106	libusb_free_transfer(devc->xfer_in);
	107	g_free(devc);
	108	continue;
	109	}
	110
	111	fw_ver_str = g_strdup_printf("%u.%u", dev_info.fw_ver_major,
	112	dev_info.fw_ver_minor);
e52e712d MS	113	if (!fw_ver_str) {
	114	sr_err("Firmware string malloc failed.");
	115	sr_usb_dev_inst_free(usb);
	116	libusb_free_transfer(devc->xfer_in);
	117	libusb_free_transfer(devc->xfer_out);
	118	g_free(devc);
	119	continue;
	120	}
	121
	122	sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE, VENDOR_NAME,
	123	MODEL_NAME, fw_ver_str);
e52e712d	124	g_free(fw_ver_str);
e52e712d MS	125	if (!sdi) {
	126	sr_err("sr_dev_inst_new failed.");
	127	sr_usb_dev_inst_free(usb);
	128	libusb_free_transfer(devc->xfer_in);
	129	libusb_free_transfer(devc->xfer_out);
	130	g_free(devc);
	131	continue;
	132	}
	133
	134	sdi->priv = devc;
	135	sdi->driver = di;
	136	sdi->inst_type = SR_INST_USB;
	137	sdi->conn = usb;
	138
	139	for (i = 0; probe_names[i]; i++) {
	140	probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
	141	probe_names[i]);
	142	sdi->probes = g_slist_append(sdi->probes, probe);
	143	devc->probes[i] = probe;
	144	}
	145
	146	devc->state = STATE_IDLE;
	147	devc->next_state = STATE_IDLE;
	148
	149	/* Set default samplerate. */
79914b3a	150	sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE);
e52e712d MS	151
	152	/* Set default capture ratio. */
	153	devc->capture_ratio = 0;
	154
	155	/* Set default after trigger delay. */
	156	devc->after_trigger_delay = 0;
	157
	158	memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE +
	159	PACKET_LENGTH);
	160	memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE +
	161	PACKET_LENGTH);
	162
	163	libusb_fill_control_setup(devc->xfer_buf_in,
	164	USB_REQUEST_TYPE_IN, USB_HID_SET_REPORT,
	165	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	166	PACKET_LENGTH);
	167	libusb_fill_control_setup(devc->xfer_buf_out,
	168	USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT,
	169	USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE,
	170	PACKET_LENGTH);
	171
	172	devc->xfer_data_in = devc->xfer_buf_in +
	173	LIBUSB_CONTROL_SETUP_SIZE;
	174	devc->xfer_data_out = devc->xfer_buf_out +
	175	LIBUSB_CONTROL_SETUP_SIZE;
	176
	177	drvc->instances = g_slist_append(drvc->instances, sdi);
	178	devices = g_slist_append(devices, sdi);
	179
	180	device_index++;
	181	}
16e76bae	182
e52e712d	183	g_slist_free(usb_devices);
16e76bae MS	184
	185	return devices;
	186	}
	187
	188	static GSList *dev_list(void)
	189	{
c824eb63	190	return ((struct drv_context *)(di->priv))->instances;
16e76bae MS	191	}
16e76bae MS	192
e52e712d MS	193	static void clear_dev_context(void *priv)
e52e712d MS	194	{
c824eb63 UH	195	struct dev_context *devc;
	196
	197	devc = priv;
e52e712d	198
c824eb63	199	sr_dbg("Device context cleared.");
e52e712d MS	200
	201	libusb_free_transfer(devc->xfer_in);
	202	libusb_free_transfer(devc->xfer_out);
	203	g_free(devc);
	204	}
	205
16e76bae MS	206	static int dev_clear(void)
16e76bae MS	207	{
e52e712d	208	return std_dev_clear(di, &clear_dev_context);
16e76bae MS	209	}
	210
	211	static int dev_open(struct sr_dev_inst *sdi)
	212	{
e52e712d MS	213	struct drv_context *drvc;
	214	struct dev_context *devc;
	215	struct sr_usb_dev_inst *usb;
	216	uint8_t buffer[PACKET_LENGTH];
	217	int ret;
	218
	219	if (!(drvc = di->priv)) {
	220	sr_err("Driver was not initialized.");
	221	return SR_ERR;
	222	}
	223
	224	usb = sdi->conn;
	225	devc = sdi->priv;
16e76bae	226
e52e712d MS	227	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	228	return SR_ERR;
	229
	230	/*
	231	* Determine if a kernel driver is active on this interface and, if so,
	232	* detach it.
	233	*/
	234	if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
	235	ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE);
e52e712d	236	if (ret < 0) {
9526f2d4	237	sr_err("Failed to detach kernel driver: %s.",
e52e712d MS	238	libusb_error_name(ret));
	239	return SR_ERR;
	240	}
	241	}
	242
79914b3a	243	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) {
e52e712d MS	244	sr_err("Failed to claim interface: %s.",
	245	libusb_error_name(ret));
	246	return SR_ERR;
	247	}
	248
	249	libusb_fill_control_transfer(devc->xfer_in, usb->devhdl,
79914b3a	250	devc->xfer_buf_in, sl2_receive_transfer_in,
e52e712d MS	251	sdi, USB_TIMEOUT);
	252
	253	libusb_fill_control_transfer(devc->xfer_out, usb->devhdl,
79914b3a	254	devc->xfer_buf_out, sl2_receive_transfer_out,
e52e712d MS	255	sdi, USB_TIMEOUT);
	256
	257	memset(buffer, 0, sizeof(buffer));
	258
	259	buffer[0] = CMD_RESET;
79914b3a	260	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	261	sr_err("Device reset failed: %s.", libusb_error_name(ret));
	262	return SR_ERR;
	263	}
	264
	265	/*
	266	* Set the device to idle state. If the device is not in idle state it
c824eb63 UH	267	* possibly will reset itself after a few seconds without being used
c824eb63 UH	268	* and thereby close the connection.
e52e712d MS	269	*/
e52e712d MS	270	buffer[0] = CMD_IDLE;
79914b3a	271	if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) {
e52e712d MS	272	sr_err("Failed to set device in idle state: %s.",
	273	libusb_error_name(ret));
	274	return SR_ERR;
	275	}
16e76bae MS	276
	277	sdi->status = SR_ST_ACTIVE;
	278
	279	return SR_OK;
	280	}
	281
	282	static int dev_close(struct sr_dev_inst *sdi)
	283	{
e52e712d MS	284	struct sr_usb_dev_inst *usb;
	285
	286	if (!di->priv) {
	287	sr_err("Driver was not initialized.");
	288	return SR_ERR;
	289	}
	290
	291	usb = sdi->conn;
	292
	293	if (!usb->devhdl)
	294	return SR_OK;
16e76bae	295
e52e712d MS	296	libusb_release_interface(usb->devhdl, USB_INTERFACE);
e52e712d MS	297	libusb_close(usb->devhdl);
16e76bae	298
e52e712d	299	usb->devhdl = NULL;
16e76bae MS	300	sdi->status = SR_ST_INACTIVE;
	301
	302	return SR_OK;
	303	}
	304
	305	static int cleanup(void)
	306	{
c824eb63	307	return dev_clear();
16e76bae MS	308	}
	309
	310	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi)
	311	{
e52e712d	312	struct dev_context *devc;
16e76bae MS	313	int ret;
16e76bae MS	314
16e76bae	315	ret = SR_OK;
e52e712d MS	316	devc = sdi->priv;
e52e712d MS	317
16e76bae	318	switch (key) {
e52e712d MS	319	case SR_CONF_SAMPLERATE:
	320	*data = g_variant_new_uint64(devc->samplerate);
	321	break;
	322	case SR_CONF_CAPTURE_RATIO:
	323	*data = g_variant_new_uint64(devc->capture_ratio);
	324	break;
16e76bae MS	325	default:
	326	return SR_ERR_NA;
	327	}
	328
	329	return ret;
	330	}
	331
	332	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi)
	333	{
e52e712d	334	uint64_t samplerate, limit_samples, capture_ratio;
16e76bae MS	335	int ret;
16e76bae MS	336
16e76bae MS	337	if (sdi->status != SR_ST_ACTIVE)
	338	return SR_ERR_DEV_CLOSED;
	339
	340	ret = SR_OK;
e52e712d	341
16e76bae	342	switch (key) {
e52e712d MS	343	case SR_CONF_LIMIT_SAMPLES:
e52e712d MS	344	limit_samples = g_variant_get_uint64(data);
79914b3a	345	ret = sl2_set_limit_samples(sdi, limit_samples);
e52e712d MS	346	break;
	347	case SR_CONF_SAMPLERATE:
	348	samplerate = g_variant_get_uint64(data);
79914b3a	349	ret = sl2_set_samplerate(sdi, samplerate);
e52e712d MS	350	break;
	351	case SR_CONF_CAPTURE_RATIO:
	352	capture_ratio = g_variant_get_uint64(data);
79914b3a	353	ret = sl2_set_capture_ratio(sdi, capture_ratio);
e52e712d	354	break;
16e76bae	355	default:
e52e712d	356	return SR_ERR_NA;
16e76bae MS	357	}
	358
	359	return ret;
	360	}
	361
	362	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	363	{
e52e712d MS	364	GVariant *gvar;
e52e712d MS	365	GVariantBuilder gvb;
16e76bae MS	366	int ret;
	367
	368	(void)sdi;
16e76bae MS	369
16e76bae MS	370	ret = SR_OK;
e52e712d	371
16e76bae	372	switch (key) {
e52e712d MS	373	case SR_CONF_DEVICE_OPTIONS:
	374	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, hwcaps,
	375	ARRAY_SIZE(hwcaps), sizeof(int32_t));
	376	break;
	377	case SR_CONF_SAMPLERATE:
	378	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	379	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
79914b3a	380	sl2_samplerates, ARRAY_SIZE(sl2_samplerates),
e52e712d MS	381	sizeof(uint64_t));
	382	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	383	*data = g_variant_builder_end(&gvb);
	384	break;
	385	case SR_CONF_TRIGGER_TYPE:
	386	*data = g_variant_new_string(TRIGGER_TYPES);
	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	const struct libusb_pollfd **pfd;
	398	struct drv_context *drvc;
	399	struct dev_context *devc;
	400	uint16_t trigger_bytes, tmp;
	401	unsigned int i, j;
	402	int ret;
16e76bae MS	403
	404	if (sdi->status != SR_ST_ACTIVE)
	405	return SR_ERR_DEV_CLOSED;
	406
e52e712d MS	407	devc = sdi->priv;
	408	drvc = di->priv;
	409
	410	devc->cb_data = cb_data;
	411	devc->wait_data_ready_locked = TRUE;
	412	devc->stopping_in_progress = FALSE;
	413	devc->transfer_error = FALSE;
	414	devc->samples_processed = 0;
	415	devc->channel = 0;
	416	devc->sample_packet = 0;
	417
	418	/*
	419	* The trigger must be configured first because the calculation of the
	420	* pre and post trigger samples depends on a configured trigger.
	421	*/
79914b3a UH	422	sl2_configure_trigger(sdi);
79914b3a UH	423	sl2_calculate_trigger_samples(sdi);
e52e712d MS	424
	425	trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes;
	426
	427	/* Calculate the number of expected sample packets. */
	428	devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES;
	429
	430	/* Round up the number of expected sample packets. */
	431	if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0)
	432	devc->num_sample_packets++;
	433
	434	devc->num_enabled_probes = 0;
	435
	436	/*
	437	* Count the number of enabled probes and number them for a sequential
	438	* access.
	439	*/
	440	for (i = 0, j = 0; i < NUM_PROBES; i++) {
	441	if (devc->probes[i]->enabled) {
	442	devc->num_enabled_probes++;
	443	devc->probe_map[j] = i;
	444	j++;
	445	}
	446	}
	447
	448	sr_dbg("Number of enabled probes: %i.", devc->num_enabled_probes);
	449
	450	/* Set up the transfer buffer for the acquisition. */
	451	devc->xfer_data_out[0] = CMD_SAMPLE;
	452	devc->xfer_data_out[1] = 0x00;
	453
	454	tmp = GUINT16_TO_LE(devc->pre_trigger_bytes);
	455	memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp));
	456
	457	tmp = GUINT16_TO_LE(devc->post_trigger_bytes);
	458	memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp));
	459
	460	devc->xfer_data_out[6] = devc->samplerate_id;
	461	devc->xfer_data_out[7] = devc->trigger_type;
	462	devc->xfer_data_out[8] = devc->trigger_channel;
	463	devc->xfer_data_out[9] = 0x00;
	464
	465	tmp = GUINT16_TO_LE(devc->after_trigger_delay);
	466	memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp));
	467
	468	if (!(pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx))) {
	469	sr_err("libusb_get_pollfds failed.");
	470	return SR_ERR;
	471	}
	472
	473	/* Count the number of file descriptors. */
	474	for (devc->num_usbfd = 0; pfd[devc->num_usbfd]; devc->num_usbfd++);
	475
	476	if (!(devc->usbfd = g_try_malloc(devc->num_usbfd * sizeof(int)))) {
	477	sr_err("File descriptor array malloc failed.");
	478	free(pfd);
e52e712d MS	479	return SR_ERR_MALLOC;
	480	}
	481
	482	if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) {
c824eb63	483	sr_err("Submit transfer failed: %s.", libusb_error_name(ret));
e52e712d MS	484	g_free(devc->usbfd);
	485	return SR_ERR;
	486	}
	487
	488	for (i = 0; i < devc->num_usbfd; i++) {
	489	sr_source_add(pfd[i]->fd, pfd[i]->events, 100,
	490	ikalogic_scanalogic2_receive_data, (void *)sdi);
	491
	492	devc->usbfd[i] = pfd[i]->fd;
	493	}
	494
	495	free(pfd);
	496
	497	sr_dbg("Acquisition started successfully.");
	498
	499	/* Send header packet to the session bus. */
	500	std_session_send_df_header(cb_data, LOG_PREFIX);
	501
	502	devc->next_state = STATE_SAMPLE;
16e76bae MS	503
	504	return SR_OK;
	505	}
	506
	507	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	508	{
	509	(void)cb_data;
	510
	511	if (sdi->status != SR_ST_ACTIVE)
	512	return SR_ERR_DEV_CLOSED;
	513
e52e712d MS	514	sr_dbg("Stopping acquisition.");
	515
	516	sdi->status = SR_ST_STOPPING;
16e76bae MS	517
	518	return SR_OK;
	519	}
	520
	521	SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info = {
	522	.name = "ikalogic-scanalogic2",
e52e712d	523	.longname = "IKALOGIC Scanalogic-2",
16e76bae MS	524	.api_version = 1,
	525	.init = init,
	526	.cleanup = cleanup,
	527	.scan = scan,
	528	.dev_list = dev_list,
	529	.dev_clear = dev_clear,
	530	.config_get = config_get,
	531	.config_set = config_set,
	532	.config_list = config_list,
	533	.dev_open = dev_open,
	534	.dev_close = dev_close,
	535	.dev_acquisition_start = dev_acquisition_start,
	536	.dev_acquisition_stop = dev_acquisition_stop,
	537	.priv = NULL,
	538	};