[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 init(struct sr_context *sr_ctx)
{
	return std_hw_init(sr_ctx, di, LOG_PREFIX);
}

static GSList *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;

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

static int 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 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 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;
		}
		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_DEV_CLOSED;

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

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

	devc = sdi->priv;

	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, LOG_PREFIX);

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