[libsigrok.git] / hardware / link-mso19 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
 * Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
 * Copyright (C) 2013 Lior Elazary <lelazary@yahoo.com>
 *
 * 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 int32_t hwcaps[] = {
	SR_CONF_OSCILLOSCOPE,
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_SAMPLERATE,
	SR_CONF_TRIGGER_SLOPE,
	SR_CONF_HORIZ_TRIGGERPOS,
//      SR_CONF_CAPTURE_RATIO,
	SR_CONF_LIMIT_SAMPLES,
//      SR_CONF_RLE,
};

/*
 * Probes are numbered 0 to 7.
 *
 * See also: http://www.linkinstruments.com/images/mso19_1113.gif
 */
SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
	/* Note: DSO needs to be first. */
	"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
};

static const uint64_t samplerates[] = {
	SR_HZ(100),
	SR_MHZ(200),
	SR_HZ(100),
};

SR_PRIV struct sr_dev_driver link_mso19_driver_info;
static struct sr_dev_driver *di = &link_mso19_driver_info;

static int hw_init(struct sr_context *sr_ctx)
{
	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
}

static GSList *hw_scan(GSList *options)
{
	int i;
	GSList *devices = NULL;
	const char *conn = NULL;
	const char *serialcomm = NULL;
	GSList *l;
	struct sr_config *src;
	struct udev *udev;
	int ptype;

	(void)options;

	for (l = options; l; l = l->next) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_CONN:
			conn = g_variant_get_string(src->data, NULL);
			break;
		case SR_CONF_SERIALCOMM:
			serialcomm  = g_variant_get_string(src->data, NULL);
			break;
		}
	}
	if (!conn)
		conn = SERIALCONN;
	if (serialcomm == NULL)
		serialcomm = SERIALCOMM;

	udev = udev_new();
	if (!udev) {
		sr_err("Failed to initialize udev.");
	}

	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	udev_enumerate_scan_devices(enumerate);
	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	struct udev_list_entry *dev_list_entry;
	for (dev_list_entry = devs;
	     dev_list_entry != NULL;
	     dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
		const char *syspath = udev_list_entry_get_name(dev_list_entry);
		struct udev_device *dev =
		    udev_device_new_from_syspath(udev, syspath);
		const char *sysname = udev_device_get_sysname(dev);
		struct udev_device *parent =
		    udev_device_get_parent_with_subsystem_devtype(dev, "usb",
								  "usb_device");

		if (!parent) {
			sr_err("Unable to find parent usb device for %s",
			       sysname);
			continue;
		}

		const char *idVendor =
		    udev_device_get_sysattr_value(parent, "idVendor");
		const char *idProduct =
		    udev_device_get_sysattr_value(parent, "idProduct");
		if (strcmp(USB_VENDOR, idVendor)
		    || strcmp(USB_PRODUCT, idProduct))
			continue;

		const char *iSerial =
		    udev_device_get_sysattr_value(parent, "serial");
		const char *iProduct =
		    udev_device_get_sysattr_value(parent, "product");

		char path[32];
		snprintf(path, sizeof(path), "/dev/%s", sysname);
		conn = path;

		size_t s = strcspn(iProduct, " ");
		char product[32];
		char manufacturer[32];
		if (s > sizeof(product) ||
		    strlen(iProduct) - s > sizeof(manufacturer)) {
			sr_err("Could not parse iProduct: %s.", iProduct);
			continue;
		}
		strncpy(product, iProduct, s);
		product[s] = 0;
		strcpy(manufacturer, iProduct + s + 1);

		//Create the device context and set its params
		struct dev_context *devc;
		if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
			sr_err("Device context malloc failed.");
			return devices;
		}

		if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
			sr_err("Invalid iSerial: %s.", iSerial);
			g_free(devc);
			return devices;
		}

		char hwrev[32];
		sprintf(hwrev, "r%d", devc->hwrev);
		devc->ctlbase1 = 0;
		devc->protocol_trigger.spimode = 0;
		for (i = 0; i < 4; i++) {
			devc->protocol_trigger.word[i] = 0;
			devc->protocol_trigger.mask[i] = 0xff;
		}

		if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) {
			g_free(devc);
			return devices;
		}

		struct sr_dev_inst *sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
						manufacturer, product, hwrev);

		if (!sdi) {
			sr_err("Unable to create device instance for %s",
			       sysname);
			sr_dev_inst_free(sdi);
			g_free(devc);
			return devices;
		}

		sdi->driver = di;
		sdi->priv = devc;

		for (i = 0; i < NUM_PROBES; i++) {
			struct sr_probe *probe;
			ptype = (i == 0) ? SR_PROBE_ANALOG : SR_PROBE_LOGIC;
			if (!(probe = sr_probe_new(i, ptype, TRUE,
						   mso19_probe_names[i])))
				return 0;
			sdi->probes = g_slist_append(sdi->probes, probe);
		}

		//Add the driver
		struct drv_context *drvc = di->priv;
		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);
	}

	return devices;
}

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

static int hw_dev_open(struct sr_dev_inst *sdi)
{
	int ret;
	struct dev_context *devc;

	devc = sdi->priv;

	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	/* FIXME: discard serial buffer */
	mso_check_trigger(devc->serial, &devc->trigger_state);
	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);

	ret = mso_reset_adc(sdi);
	if (ret != SR_OK)
		return ret;

	mso_check_trigger(devc->serial, &devc->trigger_state);
	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);

	//    ret = mso_reset_fsm(sdi);
	//    if (ret != SR_OK)
	//            return ret;
	//    return SR_ERR;

	return SR_OK;
}

static int hw_dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;

	if (devc->serial && devc->serial->fd != -1) {
		serial_close(devc->serial);
		sdi->status = SR_ST_INACTIVE;
	}

	return SR_OK;
}

static int hw_cleanup(void)
{
	GSList *l;
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	int ret = SR_OK;

	if (!(drvc = di->priv))
		return SR_OK;

	/* Properly close and free all devices. */
	for (l = drvc->instances; l; l = l->next) {
		if (!(sdi = l->data)) {
			/* Log error, but continue cleaning up the rest. */
			sr_err("%s: sdi was NULL, continuing", __func__);
			ret = SR_ERR_BUG;
			continue;
		}
		if (!(devc = sdi->priv)) {
			/* Log error, but continue cleaning up the rest. */
			sr_err("%s: sdi->priv was NULL, continuing", __func__);
			ret = SR_ERR_BUG;
			continue;
		}
		hw_dev_close(sdi);
		sr_serial_dev_inst_free(devc->serial);
		sr_dev_inst_free(sdi);
	}
	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	return ret;
}

static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	switch (id) {
	case SR_CONF_SAMPLERATE:
		if (sdi) {
			devc = sdi->priv;
			*data = g_variant_new_uint64(devc->cur_rate);
		} else
			return SR_ERR;
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
	int ret;
	struct dev_context *devc;
	uint64_t num_samples, slope;
	int trigger_pos;
	double pos;

	devc = sdi->priv;

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

	switch (id) {
	case SR_CONF_SAMPLERATE:
		// FIXME
		return mso_configure_rate(sdi, g_variant_get_uint64(data));
		ret = SR_OK;
		break;
	case SR_CONF_LIMIT_SAMPLES:
		num_samples = g_variant_get_uint64(data);
		if (num_samples != 1024) {
			sr_err("Only 1024 samples are supported.");
			ret = SR_ERR_ARG;
		} else {
			devc->limit_samples = num_samples;
			sr_dbg("setting limit_samples to %i\n",
			       num_samples);
			ret = SR_OK;
		}
		break;
	case SR_CONF_CAPTURE_RATIO:
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SLOPE:
		slope = g_variant_get_uint64(data);
		if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE) {
			sr_err("Invalid trigger slope");
			ret = SR_ERR_ARG;
		} else {
			devc->trigger_slope = slope;
			ret = SR_OK;
		}
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		pos = g_variant_get_double(data);
		if (pos < 0 || pos > 255) {
			sr_err("Trigger position (%f) should be between 0 and 255.", pos);
			ret = SR_ERR_ARG;
		} else {
			trigger_pos = (int)pos;
			devc->trigger_holdoff[0] = trigger_pos & 0xff;
			ret = SR_OK;
		}
		break;
	case SR_CONF_RLE:
		ret = SR_OK;
		break;
	default:
		ret = SR_ERR_NA;
		break;
	}

	return ret;
}

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

	(void)sdi;

	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"), samplerates,
				ARRAY_SIZE(samplerates), sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TRIGGER_TYPE:
		*data = g_variant_new_string(TRIGGER_TYPE);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	struct dev_context *devc;
	int ret = SR_ERR;

	devc = sdi->priv;

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

	if (mso_configure_probes(sdi) != SR_OK) {
		sr_err("Failed to configure probes.");
		return SR_ERR;
	}

	/* FIXME: No need to do full reconfigure every time */
//      ret = mso_reset_fsm(sdi);
//      if (ret != SR_OK)
//              return ret;

	/* FIXME: ACDC Mode */
	devc->ctlbase1 &= 0x7f;
//      devc->ctlbase1 |= devc->acdcmode;

	ret = mso_configure_rate(sdi, devc->cur_rate);
	if (ret != SR_OK)
		return ret;

	/* set dac offset */
	ret = mso_dac_out(sdi, devc->dac_offset);
	if (ret != SR_OK)
		return ret;

	ret = mso_configure_threshold_level(sdi);
	if (ret != SR_OK)
		return ret;

	ret = mso_configure_trigger(sdi);
	if (ret != SR_OK)
		return ret;

	/* END of config hardware part */
	ret = mso_arm(sdi);
	if (ret != SR_OK)
		return ret;

	/* Start acquisition on the device. */
	mso_check_trigger(devc->serial, &devc->trigger_state);
	ret = mso_check_trigger(devc->serial, NULL);
	if (ret != SR_OK)
		return ret;

	/* Reset trigger state. */
	devc->trigger_state = 0x00;

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

	/* Our first probe is analog, the other 8 are of type 'logic'. */
	/* TODO. */

	sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data);

	return SR_OK;
}

/* This stops acquisition on ALL devices, ignoring dev_index. */
static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	(void)cb_data;

	stop_acquisition(sdi);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
	.name = "link-mso19",
	.longname = "Link Instruments MSO-19",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.scan = hw_scan,
	.dev_list = hw_dev_list,
	.dev_clear = hw_cleanup,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
	5	* Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
	6	* Copyright (C) 2013 Lior Elazary <lelazary@yahoo.com>
	7	*
	8	* This program is free software: you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation, either version 3 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
	22	#include "protocol.h"
	23
	24	static const int32_t hwcaps[] = {
	25	SR_CONF_OSCILLOSCOPE,
	26	SR_CONF_LOGIC_ANALYZER,
	27	SR_CONF_SAMPLERATE,
	28	SR_CONF_TRIGGER_SLOPE,
	29	SR_CONF_HORIZ_TRIGGERPOS,
	30	// SR_CONF_CAPTURE_RATIO,
	31	SR_CONF_LIMIT_SAMPLES,
	32	// SR_CONF_RLE,
	33	};
	34
	35	/*
	36	* Probes are numbered 0 to 7.
	37	*
	38	* See also: http://www.linkinstruments.com/images/mso19_1113.gif
	39	*/
	40	SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
	41	/* Note: DSO needs to be first. */
	42	"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
	43	};
	44
	45	static const uint64_t samplerates[] = {
	46	SR_HZ(100),
	47	SR_MHZ(200),
	48	SR_HZ(100),
	49	};
	50
	51	SR_PRIV struct sr_dev_driver link_mso19_driver_info;
	52	static struct sr_dev_driver *di = &link_mso19_driver_info;
	53
	54	static int hw_init(struct sr_context *sr_ctx)
	55	{
	56	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
	57	}
	58
	59	static GSList hw_scan(GSList options)
	60	{
	61	int i;
	62	GSList *devices = NULL;
	63	const char *conn = NULL;
	64	const char *serialcomm = NULL;
	65	GSList *l;
	66	struct sr_config *src;
	67	struct udev *udev;
	68	int ptype;
	69
	70	(void)options;
	71
	72	for (l = options; l; l = l->next) {
	73	src = l->data;
	74	switch (src->key) {
	75	case SR_CONF_CONN:
	76	conn = g_variant_get_string(src->data, NULL);
	77	break;
	78	case SR_CONF_SERIALCOMM:
	79	serialcomm = g_variant_get_string(src->data, NULL);
	80	break;
	81	}
	82	}
	83	if (!conn)
	84	conn = SERIALCONN;
	85	if (serialcomm == NULL)
	86	serialcomm = SERIALCOMM;
	87
	88	udev = udev_new();
	89	if (!udev) {
	90	sr_err("Failed to initialize udev.");
	91	}
	92
	93	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	94	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	95	udev_enumerate_scan_devices(enumerate);
	96	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	97	struct udev_list_entry *dev_list_entry;
	98	for (dev_list_entry = devs;
	99	dev_list_entry != NULL;
	100	dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
	101	const char *syspath = udev_list_entry_get_name(dev_list_entry);
	102	struct udev_device *dev =
	103	udev_device_new_from_syspath(udev, syspath);
	104	const char *sysname = udev_device_get_sysname(dev);
	105	struct udev_device *parent =
	106	udev_device_get_parent_with_subsystem_devtype(dev, "usb",
	107	"usb_device");
	108
	109	if (!parent) {
	110	sr_err("Unable to find parent usb device for %s",
	111	sysname);
	112	continue;
	113	}
	114
	115	const char *idVendor =
	116	udev_device_get_sysattr_value(parent, "idVendor");
	117	const char *idProduct =
	118	udev_device_get_sysattr_value(parent, "idProduct");
	119	if (strcmp(USB_VENDOR, idVendor)
	120	\|\| strcmp(USB_PRODUCT, idProduct))
	121	continue;
	122
	123	const char *iSerial =
	124	udev_device_get_sysattr_value(parent, "serial");
	125	const char *iProduct =
	126	udev_device_get_sysattr_value(parent, "product");
	127
	128	char path[32];
	129	snprintf(path, sizeof(path), "/dev/%s", sysname);
	130	conn = path;
	131
	132	size_t s = strcspn(iProduct, " ");
	133	char product[32];
	134	char manufacturer[32];
	135	if (s > sizeof(product) \|\|
	136	strlen(iProduct) - s > sizeof(manufacturer)) {
	137	sr_err("Could not parse iProduct: %s.", iProduct);
	138	continue;
	139	}
	140	strncpy(product, iProduct, s);
	141	product[s] = 0;
	142	strcpy(manufacturer, iProduct + s + 1);
	143
	144	//Create the device context and set its params
	145	struct dev_context *devc;
	146	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	147	sr_err("Device context malloc failed.");
	148	return devices;
	149	}
	150
	151	if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
	152	sr_err("Invalid iSerial: %s.", iSerial);
	153	g_free(devc);
	154	return devices;
	155	}
	156
	157	char hwrev[32];
	158	sprintf(hwrev, "r%d", devc->hwrev);
	159	devc->ctlbase1 = 0;
	160	devc->protocol_trigger.spimode = 0;
	161	for (i = 0; i < 4; i++) {
	162	devc->protocol_trigger.word[i] = 0;
	163	devc->protocol_trigger.mask[i] = 0xff;
	164	}
	165
	166	if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) {
	167	g_free(devc);
	168	return devices;
	169	}
	170
	171	struct sr_dev_inst *sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
	172	manufacturer, product, hwrev);
	173
	174	if (!sdi) {
	175	sr_err("Unable to create device instance for %s",
	176	sysname);
	177	sr_dev_inst_free(sdi);
	178	g_free(devc);
	179	return devices;
	180	}
	181
	182	sdi->driver = di;
	183	sdi->priv = devc;
	184
	185	for (i = 0; i < NUM_PROBES; i++) {
	186	struct sr_probe *probe;
	187	ptype = (i == 0) ? SR_PROBE_ANALOG : SR_PROBE_LOGIC;
	188	if (!(probe = sr_probe_new(i, ptype, TRUE,
	189	mso19_probe_names[i])))
	190	return 0;
	191	sdi->probes = g_slist_append(sdi->probes, probe);
	192	}
	193
	194	//Add the driver
	195	struct drv_context *drvc = di->priv;
	196	drvc->instances = g_slist_append(drvc->instances, sdi);
	197	devices = g_slist_append(devices, sdi);
	198	}
	199
	200	return devices;
	201	}
	202
	203	static GSList *hw_dev_list(void)
	204	{
	205	return ((struct drv_context *)(di->priv))->instances;
	206	}
	207
	208	static int hw_dev_open(struct sr_dev_inst *sdi)
	209	{
	210	int ret;
	211	struct dev_context *devc;
	212
	213	devc = sdi->priv;
	214
	215	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	216	return SR_ERR;
	217
	218	sdi->status = SR_ST_ACTIVE;
	219
	220	/* FIXME: discard serial buffer */
	221	mso_check_trigger(devc->serial, &devc->trigger_state);
	222	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	223
	224	ret = mso_reset_adc(sdi);
	225	if (ret != SR_OK)
	226	return ret;
	227
	228	mso_check_trigger(devc->serial, &devc->trigger_state);
	229	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	230
	231	// ret = mso_reset_fsm(sdi);
	232	// if (ret != SR_OK)
	233	// return ret;
	234	// return SR_ERR;
	235
	236	return SR_OK;
	237	}
	238
	239	static int hw_dev_close(struct sr_dev_inst *sdi)
	240	{
	241	struct dev_context *devc;
	242
	243	devc = sdi->priv;
	244
	245	if (devc->serial && devc->serial->fd != -1) {
	246	serial_close(devc->serial);
	247	sdi->status = SR_ST_INACTIVE;
	248	}
	249
	250	return SR_OK;
	251	}
	252
	253	static int hw_cleanup(void)
	254	{
	255	GSList *l;
	256	struct sr_dev_inst *sdi;
	257	struct drv_context *drvc;
	258	struct dev_context *devc;
	259	int ret = SR_OK;
	260
	261	if (!(drvc = di->priv))
	262	return SR_OK;
	263
	264	/* Properly close and free all devices. */
	265	for (l = drvc->instances; l; l = l->next) {
	266	if (!(sdi = l->data)) {
	267	/* Log error, but continue cleaning up the rest. */
	268	sr_err("%s: sdi was NULL, continuing", __func__);
	269	ret = SR_ERR_BUG;
	270	continue;
	271	}
	272	if (!(devc = sdi->priv)) {
	273	/* Log error, but continue cleaning up the rest. */
	274	sr_err("%s: sdi->priv was NULL, continuing", __func__);
	275	ret = SR_ERR_BUG;
	276	continue;
	277	}
	278	hw_dev_close(sdi);
	279	sr_serial_dev_inst_free(devc->serial);
	280	sr_dev_inst_free(sdi);
	281	}
	282	g_slist_free(drvc->instances);
	283	drvc->instances = NULL;
	284
	285	return ret;
	286	}
	287
	288	static int config_get(int id, GVariant *data, const struct sr_dev_inst sdi)
	289	{
	290	struct dev_context *devc;
	291
	292	switch (id) {
	293	case SR_CONF_SAMPLERATE:
	294	if (sdi) {
	295	devc = sdi->priv;
	296	*data = g_variant_new_uint64(devc->cur_rate);
	297	} else
	298	return SR_ERR;
	299	break;
	300	default:
	301	return SR_ERR_NA;
	302	}
	303
	304	return SR_OK;
	305	}
	306
	307	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi)
	308	{
	309	int ret;
	310	struct dev_context *devc;
	311	uint64_t num_samples, slope;
	312	int trigger_pos;
	313	double pos;
	314
	315	devc = sdi->priv;
	316
	317	if (sdi->status != SR_ST_ACTIVE)
	318	return SR_ERR;
	319
	320	switch (id) {
	321	case SR_CONF_SAMPLERATE:
	322	// FIXME
	323	return mso_configure_rate(sdi, g_variant_get_uint64(data));
	324	ret = SR_OK;
	325	break;
	326	case SR_CONF_LIMIT_SAMPLES:
	327	num_samples = g_variant_get_uint64(data);
	328	if (num_samples != 1024) {
	329	sr_err("Only 1024 samples are supported.");
	330	ret = SR_ERR_ARG;
	331	} else {
	332	devc->limit_samples = num_samples;
	333	sr_dbg("setting limit_samples to %i\n",
	334	num_samples);
	335	ret = SR_OK;
	336	}
	337	break;
	338	case SR_CONF_CAPTURE_RATIO:
	339	ret = SR_OK;
	340	break;
	341	case SR_CONF_TRIGGER_SLOPE:
	342	slope = g_variant_get_uint64(data);
	343	if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE) {
	344	sr_err("Invalid trigger slope");
	345	ret = SR_ERR_ARG;
	346	} else {
	347	devc->trigger_slope = slope;
	348	ret = SR_OK;
	349	}
	350	break;
	351	case SR_CONF_HORIZ_TRIGGERPOS:
	352	pos = g_variant_get_double(data);
	353	if (pos < 0 \|\| pos > 255) {
	354	sr_err("Trigger position (%f) should be between 0 and 255.", pos);
	355	ret = SR_ERR_ARG;
	356	} else {
	357	trigger_pos = (int)pos;
	358	devc->trigger_holdoff[0] = trigger_pos & 0xff;
	359	ret = SR_OK;
	360	}
	361	break;
	362	case SR_CONF_RLE:
	363	ret = SR_OK;
	364	break;
	365	default:
	366	ret = SR_ERR_NA;
	367	break;
	368	}
	369
	370	return ret;
	371	}
	372
	373	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	374	{
	375	GVariant *gvar;
	376	GVariantBuilder gvb;
	377
	378	(void)sdi;
	379
	380	switch (key) {
	381	case SR_CONF_DEVICE_OPTIONS:
	382	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	383	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	384	break;
	385	case SR_CONF_SAMPLERATE:
	386	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	387	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
	388	ARRAY_SIZE(samplerates), sizeof(uint64_t));
	389	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	390	*data = g_variant_builder_end(&gvb);
	391	break;
	392	case SR_CONF_TRIGGER_TYPE:
	393	*data = g_variant_new_string(TRIGGER_TYPE);
	394	break;
	395	default:
	396	return SR_ERR_NA;
	397	}
	398
	399	return SR_OK;
	400	}
	401
	402	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	403	void *cb_data)
	404	{
	405	struct dev_context *devc;
	406	int ret = SR_ERR;
	407
	408	devc = sdi->priv;
	409
	410	if (sdi->status != SR_ST_ACTIVE)
	411	return SR_ERR;
	412
	413	if (mso_configure_probes(sdi) != SR_OK) {
	414	sr_err("Failed to configure probes.");
	415	return SR_ERR;
	416	}
	417
	418	/* FIXME: No need to do full reconfigure every time */
	419	// ret = mso_reset_fsm(sdi);
	420	// if (ret != SR_OK)
	421	// return ret;
	422
	423	/* FIXME: ACDC Mode */
	424	devc->ctlbase1 &= 0x7f;
	425	// devc->ctlbase1 \|= devc->acdcmode;
	426
	427	ret = mso_configure_rate(sdi, devc->cur_rate);
	428	if (ret != SR_OK)
	429	return ret;
	430
	431	/* set dac offset */
	432	ret = mso_dac_out(sdi, devc->dac_offset);
	433	if (ret != SR_OK)
	434	return ret;
	435
	436	ret = mso_configure_threshold_level(sdi);
	437	if (ret != SR_OK)
	438	return ret;
	439
	440	ret = mso_configure_trigger(sdi);
	441	if (ret != SR_OK)
	442	return ret;
	443
	444	/* END of config hardware part */
	445	ret = mso_arm(sdi);
	446	if (ret != SR_OK)
	447	return ret;
	448
	449	/* Start acquisition on the device. */
	450	mso_check_trigger(devc->serial, &devc->trigger_state);
	451	ret = mso_check_trigger(devc->serial, NULL);
	452	if (ret != SR_OK)
	453	return ret;
	454
	455	/* Reset trigger state. */
	456	devc->trigger_state = 0x00;
	457
	458	/* Send header packet to the session bus. */
	459	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
	460
	461	/* Our first probe is analog, the other 8 are of type 'logic'. */
	462	/* TODO. */
	463
	464	sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data);
	465
	466	return SR_OK;
	467	}
	468
	469	/* This stops acquisition on ALL devices, ignoring dev_index. */
	470	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	471	{
	472	(void)cb_data;
	473
	474	stop_acquisition(sdi);
	475
	476	return SR_OK;
	477	}
	478
	479	SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
	480	.name = "link-mso19",
	481	.longname = "Link Instruments MSO-19",
	482	.api_version = 1,
	483	.init = hw_init,
	484	.cleanup = hw_cleanup,
	485	.scan = hw_scan,
	486	.dev_list = hw_dev_list,
	487	.dev_clear = hw_cleanup,
	488	.config_get = config_get,
	489	.config_set = config_set,
	490	.config_list = config_list,
	491	.dev_open = hw_dev_open,
	492	.dev_close = hw_dev_close,
	493	.dev_acquisition_start = hw_dev_acquisition_start,
	494	.dev_acquisition_stop = hw_dev_acquisition_stop,
	495	.priv = NULL,
	496	};