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

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.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 int hwcaps[] = {
	SR_HWCAP_LOGIC_ANALYZER,
	SR_HWCAP_SAMPLERATE,
  SR_HWCAP_TRIGGER_SLOPE, 
  SR_HWCAP_HORIZ_TRIGGERPOS,
//	SR_HWCAP_CAPTURE_RATIO,
	SR_HWCAP_LIMIT_SAMPLES,
//	SR_HWCAP_RLE,
	0,
};

/*
 * 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] = {
	"0", "1", "2", "3", "4", "5", "6", "7", NULL
};

/*supported samplerates */
static const struct sr_samplerates samplerates = {
	SR_HZ(100),
	SR_MHZ(200),
	SR_HZ(100),
	NULL,
};

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)
{
	struct drv_context *drvc;

	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
		sr_err("Driver context malloc failed.");
		return SR_ERR_MALLOC;
	}
	drvc->sr_ctx = sr_ctx;
	di->priv = drvc;

	return SR_OK;
}

static GSList *hw_scan(GSList *options)
{
  int i;

	(void)options;
	GSList *devices = NULL;

	const char* conn = NULL;
  const char* serialcomm = NULL;
  GSList *l;
	for (l = options; l; l = l->next) {
		struct sr_hwopt* opt = l->data;
		switch (opt->hwopt) {
		case SR_HWOPT_CONN:
			conn = opt->value;
			break;
		case SR_HWOPT_SERIALCOMM:
			serialcomm = opt->value;
			break;
		}
	}
	if (!conn)
    conn = SERIALCONN;
	if (serialcomm == NULL)
		serialcomm = SERIALCOMM;

	struct udev *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;
      if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, 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)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->instances;
}

static int hw_dev_open(struct sr_dev_inst *sdi)
{
	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);

	int 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 hw_info_get(int info_id, const void **data,
       const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	switch (info_id) {
	case SR_DI_HWCAPS:
		*data = hwcaps;
		break;
	case SR_DI_NUM_PROBES:
		*data = GINT_TO_POINTER(1);
		break;
	case SR_DI_PROBE_NAMES:
		*data = mso19_probe_names;
		break;
	case SR_DI_SAMPLERATES:
		*data = &samplerates;
		break;
	case SR_DI_TRIGGER_TYPES:
		*data = (char *)TRIGGER_TYPES;
		break;
	case SR_DI_CUR_SAMPLERATE:
		if (sdi) {
			devc = sdi->priv;
			*data = &devc->cur_rate;
		} else
			return SR_ERR;
		break;
	default:
		return SR_ERR_ARG;
	}

	return SR_OK;
}

static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
		const void *value)
{
	int ret;

	struct dev_context *devc;
  devc = sdi->priv;

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

	switch (hwcap) {
	case SR_HWCAP_SAMPLERATE:
		return mso_configure_rate(sdi, *(const uint64_t *) value);
		ret = SR_OK;
		break;
	case SR_HWCAP_LIMIT_SAMPLES:
    {
      const uint64_t num_samples = *(const uint64_t *)value;
      if (num_samples < 1024)
      {
        sr_err("minimum of 1024 samples required");
        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_HWCAP_CAPTURE_RATIO:
    ret = SR_OK;
		break;
  case SR_HWCAP_TRIGGER_SLOPE:
    {
      const uint64_t slope = *(const uint64_t *)value;
      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_HWCAP_HORIZ_TRIGGERPOS:
    {
      const float pos = *(const float *)value;
      if (pos < 0 || pos > 255) {
        sr_err("Trigger position (%f) should be between 0 and 255.", pos);
        ret = SR_ERR_ARG;
      } else {
        int trigger_pos = (int)pos;
        devc->trigger_holdoff[0] = trigger_pos&0xff;
        ret = SR_OK;
      }
    }
    break;

	case SR_HWCAP_RLE:
    ret = SR_OK;
		break;
	default:
		ret = SR_ERR;
	}

	return ret;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
		void *cb_data)
{
	struct sr_datafeed_packet *packet;
	struct sr_datafeed_header *header;
	struct sr_datafeed_meta_logic meta;
	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;

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

	if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
		sr_err("Datafeed packet malloc failed.");
		return SR_ERR_MALLOC;
	}

	if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
		sr_err("Datafeed header malloc failed.");
		g_free(packet);
		return SR_ERR_MALLOC;
	}


	packet->type = SR_DF_HEADER;
	packet->payload = (unsigned char *)header;
	header->feed_version = 1;
	gettimeofday(&header->starttime, NULL);
	sr_session_send(cb_data, packet);

	packet->type = SR_DF_META_LOGIC;
	packet->payload = &meta;
	meta.samplerate = devc->cur_rate;
	meta.num_probes = NUM_PROBES;
	sr_session_send(cb_data, packet);
  
	g_free(header);
	g_free(packet);

	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)
{
	/* Avoid compiler warnings. */
	(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,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.info_get = hw_info_get,
	.dev_config_set = hw_dev_config_set,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
df92e5cf	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
	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
df92e5cf	22	static const int hwcaps[] = {
	23	SR_HWCAP_LOGIC_ANALYZER,
	24	SR_HWCAP_SAMPLERATE,
087a9161	25	SR_HWCAP_TRIGGER_SLOPE,
087a9161	26	SR_HWCAP_HORIZ_TRIGGERPOS,
df92e5cf	27	// SR_HWCAP_CAPTURE_RATIO,
	28	SR_HWCAP_LIMIT_SAMPLES,
	29	// SR_HWCAP_RLE,
	30	0,
	31	};
	32
	33	/*
	34	* Probes are numbered 0 to 7.
	35	*
	36	* See also: http://www.linkinstruments.com/images/mso19_1113.gif
	37	*/
	38	SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
	39	"0", "1", "2", "3", "4", "5", "6", "7", NULL
	40	};
	41
	42	/supported samplerates /
	43	static const struct sr_samplerates samplerates = {
	44	SR_HZ(100),
df92e5cf	45	SR_MHZ(200),
5a24e89c	46	SR_HZ(100),
df92e5cf	47	NULL,
	48	};
	49
	50	SR_PRIV struct sr_dev_driver link_mso19_driver_info;
	51	static struct sr_dev_driver *di = &link_mso19_driver_info;
	52
	53	static int hw_init(struct sr_context *sr_ctx)
	54	{
df92e5cf	55	struct drv_context *drvc;
	56
	57	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
	58	sr_err("Driver context malloc failed.");
	59	return SR_ERR_MALLOC;
	60	}
	61	drvc->sr_ctx = sr_ctx;
	62	di->priv = drvc;
	63
	64	return SR_OK;
	65	}
	66
	67	static GSList hw_scan(GSList options)
	68	{
df92e5cf	69	int i;
	70
	71	(void)options;
	72	GSList *devices = NULL;
df92e5cf	73
	74	const char* conn = NULL;
	75	const char* serialcomm = NULL;
	76	GSList *l;
	77	for (l = options; l; l = l->next) {
	78	struct sr_hwopt* opt = l->data;
	79	switch (opt->hwopt) {
	80	case SR_HWOPT_CONN:
	81	conn = opt->value;
	82	break;
	83	case SR_HWOPT_SERIALCOMM:
	84	serialcomm = opt->value;
	85	break;
	86	}
	87	}
	88	if (!conn)
	89	conn = SERIALCONN;
	90	if (serialcomm == NULL)
	91	serialcomm = SERIALCOMM;
	92
	93	struct udev *udev = udev_new();
	94	if (!udev) {
	95	sr_err("Failed to initialize udev.");
	96	}
	97	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	98	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	99	udev_enumerate_scan_devices(enumerate);
	100	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	101	struct udev_list_entry *dev_list_entry;
	102	for (dev_list_entry = devs;
	103	dev_list_entry != NULL;
	104	dev_list_entry = udev_list_entry_get_next(dev_list_entry))
	105	{
	106	const char *syspath = udev_list_entry_get_name(dev_list_entry);
	107	struct udev_device *dev = udev_device_new_from_syspath(udev, syspath);
	108	const char *sysname = udev_device_get_sysname(dev);
	109	struct udev_device *parent = udev_device_get_parent_with_subsystem_devtype(
	110	dev, "usb", "usb_device");
	111
	112	if (!parent) {
	113	sr_err("Unable to find parent usb device for %s",
	114	sysname);
	115	continue;
	116	}
	117
	118	const char *idVendor = udev_device_get_sysattr_value(parent, "idVendor");
	119	const char *idProduct = udev_device_get_sysattr_value(parent, "idProduct");
	120	if (strcmp(USB_VENDOR, idVendor)
	121	\|\| strcmp(USB_PRODUCT, idProduct))
	122	continue;
	123
	124	const char* iSerial = udev_device_get_sysattr_value(parent, "serial");
	125	const char* iProduct = udev_device_get_sysattr_value(parent, "product");
	126
	127	char path[32];
	128	snprintf(path, sizeof(path), "/dev/%s", sysname);
5a24e89c	129	conn = path;
df92e5cf	130
	131	size_t s = strcspn(iProduct, " ");
	132	char product[32];
	133	char manufacturer[32];
	134	if (s > sizeof(product) \|\|
	135	strlen(iProduct) - s > sizeof(manufacturer)) {
	136	sr_err("Could not parse iProduct: %s.", iProduct);
	137	continue;
	138	}
	139	strncpy(product, iProduct, s);
	140	product[s] = 0;
4db2aaff	141	strcpy(manufacturer, iProduct + s + 1);
df92e5cf	142
	143	//Create the device context and set its params
	144	struct dev_context *devc;
	145	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	146	sr_err("Device context malloc failed.");
	147	return devices;
	148	}
	149
	150	if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
	151	sr_err("Invalid iSerial: %s.", iSerial);
	152	g_free(devc);
	153	return devices;
	154	}
	155
	156	char hwrev[32];
	157	sprintf(hwrev, "r%d", devc->hwrev);
	158	devc->ctlbase1 = 0;
	159	devc->protocol_trigger.spimode = 0;
	160	for (i = 0; i < 4; i++) {
	161	devc->protocol_trigger.word[i] = 0;
	162	devc->protocol_trigger.mask[i] = 0xff;
	163	}
	164
	165	if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm)))
	166	{
	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
df92e5cf	182	sdi->driver = di;
df92e5cf	183	sdi->priv = devc;
4db2aaff	184
	185	for (i = 0; i < NUM_PROBES; i++) {
	186	struct sr_probe *probe;
	187	if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
	188	mso19_probe_names[i])))
	189	return 0;
	190	sdi->probes = g_slist_append(sdi->probes, probe);
	191	}
	192
df92e5cf	193	//Add the driver
	194	struct drv_context *drvc = di->priv;
	195	drvc->instances = g_slist_append(drvc->instances, sdi);
	196	devices = g_slist_append(devices, sdi);
	197	}
5a24e89c	198
df92e5cf	199	return devices;
	200	}
	201
	202	static GSList *hw_dev_list(void)
	203	{
df92e5cf	204	struct drv_context *drvc;
	205
	206	drvc = di->priv;
	207
	208	return drvc->instances;
	209	}
	210
	211	static int hw_dev_open(struct sr_dev_inst *sdi)
	212	{
df92e5cf	213	struct dev_context *devc;
	214
	215	devc = sdi->priv;
	216
	217	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	218	return SR_ERR;
	219
	220	sdi->status = SR_ST_ACTIVE;
	221
	222	/* FIXME: discard serial buffer */
	223	mso_check_trigger(devc->serial, &devc->trigger_state);
	224	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	225
	226	int ret = mso_reset_adc(sdi);
	227	if (ret != SR_OK)
	228	return ret;
	229
	230	mso_check_trigger(devc->serial, &devc->trigger_state);
	231	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	232
	233	// ret = mso_reset_fsm(sdi);
	234	// if (ret != SR_OK)
	235	// return ret;
	236	// return SR_ERR;
	237
	238	return SR_OK;
	239	}
	240
	241	static int hw_dev_close(struct sr_dev_inst *sdi)
	242	{
df92e5cf	243	struct dev_context *devc;
	244
	245	devc = sdi->priv;
	246
	247	if (devc->serial && devc->serial->fd != -1) {
	248	serial_close(devc->serial);
	249	sdi->status = SR_ST_INACTIVE;
	250	}
	251
	252	return SR_OK;
	253	}
	254
	255	static int hw_cleanup(void)
	256	{
df92e5cf	257	GSList *l;
	258	struct sr_dev_inst *sdi;
	259	struct drv_context *drvc;
	260	struct dev_context *devc;
	261	int ret = SR_OK;
	262
	263	if (!(drvc = di->priv))
	264	return SR_OK;
	265
	266	/* Properly close and free all devices. */
	267	for (l = drvc->instances; l; l = l->next) {
	268	if (!(sdi = l->data)) {
	269	/* Log error, but continue cleaning up the rest. */
	270	sr_err("%s: sdi was NULL, continuing", __func__);
	271	ret = SR_ERR_BUG;
	272	continue;
	273	}
	274	if (!(devc = sdi->priv)) {
	275	/* Log error, but continue cleaning up the rest. */
	276	sr_err("%s: sdi->priv was NULL, continuing", __func__);
	277	ret = SR_ERR_BUG;
	278	continue;
	279	}
	280	hw_dev_close(sdi);
	281	sr_serial_dev_inst_free(devc->serial);
	282	sr_dev_inst_free(sdi);
	283	}
	284	g_slist_free(drvc->instances);
	285	drvc->instances = NULL;
	286
	287	return ret;
	288	}
	289
	290	static int hw_info_get(int info_id, const void **data,
	291	const struct sr_dev_inst *sdi)
	292	{
	293	struct dev_context *devc;
	294
df92e5cf	295	switch (info_id) {
	296	case SR_DI_HWCAPS:
	297	*data = hwcaps;
	298	break;
	299	case SR_DI_NUM_PROBES:
	300	*data = GINT_TO_POINTER(1);
	301	break;
	302	case SR_DI_PROBE_NAMES:
	303	*data = mso19_probe_names;
	304	break;
	305	case SR_DI_SAMPLERATES:
	306	*data = &samplerates;
	307	break;
	308	case SR_DI_TRIGGER_TYPES:
	309	data = (char )TRIGGER_TYPES;
	310	break;
	311	case SR_DI_CUR_SAMPLERATE:
	312	if (sdi) {
	313	devc = sdi->priv;
	314	*data = &devc->cur_rate;
	315	} else
	316	return SR_ERR;
	317	break;
	318	default:
	319	return SR_ERR_ARG;
	320	}
	321
	322	return SR_OK;
	323	}
	324
	325	static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
	326	const void *value)
	327	{
df92e5cf	328	int ret;
df92e5cf	329
087a9161	330	struct dev_context *devc;
	331	devc = sdi->priv;
	332
df92e5cf	333	if (sdi->status != SR_ST_ACTIVE)
	334	return SR_ERR;
	335
	336	switch (hwcap) {
	337	case SR_HWCAP_SAMPLERATE:
	338	return mso_configure_rate(sdi, (const uint64_t ) value);
	339	ret = SR_OK;
	340	break;
	341	case SR_HWCAP_LIMIT_SAMPLES:
eb913174	342	{
	343	const uint64_t num_samples = (const uint64_t )value;
	344	if (num_samples < 1024)
	345	{
	346	sr_err("minimum of 1024 samples required");
	347	ret = SR_ERR_ARG;
	348
	349	} else {
	350	devc->limit_samples = num_samples;
	351	sr_dbg("setting limit_samples to %i\n", num_samples);
	352	ret = SR_OK;
	353	}
	354	}
df92e5cf	355	break;
	356	case SR_HWCAP_CAPTURE_RATIO:
	357	ret = SR_OK;
	358	break;
087a9161	359	case SR_HWCAP_TRIGGER_SLOPE:
087a9161	360	{
eb913174	361	const uint64_t slope = (const uint64_t )value;
087a9161	362	if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE)
	363	{
	364	sr_err("Invalid trigger slope");
	365	ret = SR_ERR_ARG;
	366	} else {
	367	devc->trigger_slope = slope;
	368	ret = SR_OK;
	369	}
	370	}
	371	break;
	372	case SR_HWCAP_HORIZ_TRIGGERPOS:
	373	{
eb913174	374	const float pos = (const float )value;
087a9161	375	if (pos < 0 \|\| pos > 255) {
	376	sr_err("Trigger position (%f) should be between 0 and 255.", pos);
	377	ret = SR_ERR_ARG;
	378	} else {
	379	int trigger_pos = (int)pos;
087a9161	380	devc->trigger_holdoff[0] = trigger_pos&0xff;
	381	ret = SR_OK;
	382	}
	383	}
	384	break;
	385
df92e5cf	386	case SR_HWCAP_RLE:
	387	ret = SR_OK;
	388	break;
	389	default:
	390	ret = SR_ERR;
	391	}
	392
	393	return ret;
	394	}
	395
	396	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	397	void *cb_data)
	398	{
	399	struct sr_datafeed_packet *packet;
	400	struct sr_datafeed_header *header;
	401	struct sr_datafeed_meta_logic meta;
	402	struct dev_context *devc;
df92e5cf	403	int ret = SR_ERR;
	404
	405
df92e5cf	406	devc = sdi->priv;
	407
	408	if (sdi->status != SR_ST_ACTIVE)
	409	return SR_ERR;
	410
5a24e89c	411	if (mso_configure_probes(sdi) != SR_OK) {
	412	sr_err("Failed to configure probes.");
	413	return SR_ERR;
	414	}
df92e5cf	415
df92e5cf	416	/* FIXME: No need to do full reconfigure every time */
	417	// ret = mso_reset_fsm(sdi);
	418	// if (ret != SR_OK)
	419	// return ret;
	420
	421	/* FIXME: ACDC Mode */
	422	devc->ctlbase1 &= 0x7f;
	423	// devc->ctlbase1 \|= devc->acdcmode;
	424
	425	ret = mso_configure_rate(sdi, devc->cur_rate);
	426	if (ret != SR_OK)
	427	return ret;
	428
	429	/* set dac offset */
	430	ret = mso_dac_out(sdi, devc->dac_offset);
	431	if (ret != SR_OK)
	432	return ret;
	433
	434	ret = mso_configure_threshold_level(sdi);
	435	if (ret != SR_OK)
	436	return ret;
	437
087a9161	438
df92e5cf	439	ret = mso_configure_trigger(sdi);
	440	if (ret != SR_OK)
	441	return ret;
	442
df92e5cf	443
df92e5cf	444	/* END of config hardware part */
087a9161	445	ret = mso_arm(sdi);
	446	if (ret != SR_OK)
	447	return ret;
df92e5cf	448
df92e5cf	449	/* Start acquisition on the device. */
4db2aaff	450	mso_check_trigger(devc->serial, &devc->trigger_state);
4db2aaff	451	ret = mso_check_trigger(devc->serial, NULL);
df92e5cf	452	if (ret != SR_OK)
	453	return ret;
	454
	455	sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data);
	456
	457	if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
	458	sr_err("Datafeed packet malloc failed.");
	459	return SR_ERR_MALLOC;
	460	}
	461
	462	if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
	463	sr_err("Datafeed header malloc failed.");
	464	g_free(packet);
	465	return SR_ERR_MALLOC;
	466	}
	467
eb913174	468
df92e5cf	469	packet->type = SR_DF_HEADER;
	470	packet->payload = (unsigned char *)header;
	471	header->feed_version = 1;
	472	gettimeofday(&header->starttime, NULL);
	473	sr_session_send(cb_data, packet);
	474
	475	packet->type = SR_DF_META_LOGIC;
	476	packet->payload = &meta;
	477	meta.samplerate = devc->cur_rate;
	478	meta.num_probes = NUM_PROBES;
	479	sr_session_send(cb_data, packet);
	480
	481	g_free(header);
	482	g_free(packet);
	483
	484	return SR_OK;
	485	}
	486
087a9161	487	/* This stops acquisition on ALL devices, ignoring dev_index. */
df92e5cf	488	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
df92e5cf	489	{
df92e5cf	490	/* Avoid compiler warnings. */
	491	(void)cb_data;
	492
	493	stop_acquisition(sdi);
	494
	495	return SR_OK;
	496	}
	497
	498	SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
	499	.name = "link-mso19",
	500	.longname = "Link Instruments MSO-19",
	501	.api_version = 1,
	502	.init = hw_init,
	503	.cleanup = hw_cleanup,
	504	.scan = hw_scan,
	505	.dev_list = hw_dev_list,
	506	.dev_clear = hw_cleanup,
	507	.dev_open = hw_dev_open,
	508	.dev_close = hw_dev_close,
	509	.info_get = hw_info_get,
	510	.dev_config_set = hw_dev_config_set,
	511	.dev_acquisition_start = hw_dev_acquisition_start,
	512	.dev_acquisition_stop = hw_dev_acquisition_stop,
	513	.priv = NULL,
	514	};