[libsigrok.git] / src / hardware / baylibre-acme / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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"

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

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS | SR_CONF_SET,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
};

#define MAX_SAMPLE_RATE		500 /* In Hz */

static const uint64_t samplerates[] = {
	SR_HZ(1),
	SR_HZ(MAX_SAMPLE_RATE),
	SR_HZ(1),
};

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

static GSList *scan(GSList *options)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	GSList *devices;
	gboolean status;
	int i;

	(void)options;

	drvc = di->priv;
	devices = NULL;

	devc = g_malloc0(sizeof(struct dev_context));
	devc->samplerate = SR_HZ(10);

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->model = g_strdup("Acme cape");
	sdi->driver = di;
	sdi->priv = devc;

	status = bl_acme_is_sane();
	if (!status)
		goto err_out;

	/*
	 * Iterate over all ACME connectors and check if any probes
	 * are present.
	 */
	for (i = 0; i < MAX_PROBES; i++) {
		/*
		 * First check if there's an energy probe on this connector. If
		 * not, and we're already at the fifth probe - see if we can
		 * detect a temperature probe.
		 */
		status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
					      PROBE_NUM(i),
					      ENRG_PROBE_NAME);
		if (status) {
			/* Energy probe detected. */
			status = bl_acme_register_probe(sdi,
						       PROBE_ENRG,
						       bl_acme_get_enrg_addr(i),
						       PROBE_NUM(i));
			if (!status) {
				sr_err("Error registering power probe %d",
				       PROBE_NUM(i));
				continue;
			}

		} else if (i >= TEMP_PRB_START_INDEX) {
			status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
						      PROBE_NUM(i),
						      TEMP_PROBE_NAME);
			if (status) {
				/* Temperature probe detected. */
				status = bl_acme_register_probe(sdi,PROBE_TEMP,
						bl_acme_get_temp_addr(i),
						PROBE_NUM(i));
				if (!status) {
					sr_err("Error registering temp "
					       "probe %d", PROBE_NUM(i));
					continue;
				}
			}

		}
	}

	devices = g_slist_append(devices, sdi);
	drvc->instances = g_slist_append(drvc->instances, sdi);

	return devices;

err_out:
	g_free(devc);
	sr_dev_inst_free(sdi);

	return NULL;
}

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

static int dev_clear(void)
{
	return std_dev_clear(di, NULL);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	(void)sdi;

	/* Nothing to do here. */
	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	(void)sdi;

	/* Nothing to do here. */
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(void)
{
	dev_clear();

	return SR_OK;
}

static int config_get(uint32_t key, GVariant **data,
		      const struct sr_dev_inst *sdi,
		      const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	int ret;
	uint64_t shunt;
	gboolean power_off;

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_LIMIT_MSEC:
		*data = g_variant_new_uint64(devc->limit_msec);
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->samplerate);
		break;
	case SR_CONF_PROBE_FACTOR:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		ret = bl_acme_get_shunt(cg, &shunt);
		if (ret == SR_OK)
			*data = g_variant_new_uint64(shunt);
		break;
	case SR_CONF_POWER_OFF:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		ret = bl_acme_read_power_state(cg, &power_off);
		if (ret == SR_OK)
			*data = g_variant_new_boolean(power_off);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int config_set(uint32_t key, GVariant *data,
		      const struct sr_dev_inst *sdi,
		      const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	uint64_t samplerate;
	int ret;

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

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_samples = g_variant_get_uint64(data);
		devc->limit_msec = 0;
		sr_dbg("Setting sample limit to %" PRIu64,
		       devc->limit_samples);
		break;
	case SR_CONF_LIMIT_MSEC:
		devc->limit_msec = g_variant_get_uint64(data) * 1000;
		devc->limit_samples = 0;
		sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
		break;
	case SR_CONF_SAMPLERATE:
		samplerate = g_variant_get_uint64(data);
		if (samplerate > MAX_SAMPLE_RATE) {
			sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
			ret = SR_ERR_SAMPLERATE;
			break;
		}
		devc->samplerate = samplerate;
		sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
		break;
	case SR_CONF_PROBE_FACTOR:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
		break;
	case SR_CONF_POWER_OFF:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(uint32_t key, GVariant **data,
		       const struct sr_dev_inst *sdi,
		       const struct sr_channel_group *cg)
{
	GVariant *gvar;
	GVariantBuilder gvb;
	int ret;

	(void)sdi;
	(void)cg;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
						  devopts,
						  ARRAY_SIZE(devopts),
						  sizeof(uint32_t));
		break;
	case SR_CONF_SAMPLERATE:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
		gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
						 samplerates,
						 ARRAY_SIZE(samplerates),
						 sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

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

	(void)cb_data;

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

	devc = sdi->priv;
	devc->samples_read = 0;

	if (pipe(devc->pipe_fds)) {
		sr_err("Error setting up pipe");
		return SR_ERR;
	}

	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	g_io_channel_set_buffered(devc->channel, FALSE);

	sr_session_source_add_channel(sdi->session, devc->channel,
				      G_IO_IN | G_IO_ERR, 1,
				      bl_acme_receive_data, (void *)sdi);

	/* Send header packet to the session bus. */
	std_session_send_df_header(sdi, LOG_PREFIX);
	devc->start_time = g_get_monotonic_time();

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct sr_datafeed_packet packet;
	struct dev_context *devc;

	(void)cb_data;

	devc = sdi->priv;

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

	sr_session_source_remove_channel(sdi->session, devc->channel);
	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	g_io_channel_unref(devc->channel);
	devc->channel = NULL;

	/* Send last packet. */
	packet.type = SR_DF_END;
	sr_session_send(sdi, &packet);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	.name = "baylibre-acme",
	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
	.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
dfaee1de BG	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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
	22	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info;
	23	static struct sr_dev_driver *di = &baylibre_acme_driver_info;
	24
6b80b80d BG	25	static const uint32_t devopts[] = {
	26	SR_CONF_CONTINUOUS \| SR_CONF_SET,
	27	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	28	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
	29	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
61f2b7f7	30	SR_CONF_PROBE_FACTOR \| SR_CONF_GET \| SR_CONF_SET,
740ad48a	31	SR_CONF_POWER_OFF \| SR_CONF_GET \| SR_CONF_SET,
6b80b80d BG	32	};
	33
	34	#define MAX_SAMPLE_RATE 500 /* In Hz */
	35
	36	static const uint64_t samplerates[] = {
	37	SR_HZ(1),
	38	SR_HZ(MAX_SAMPLE_RATE),
	39	SR_HZ(1),
	40	};
	41
dfaee1de BG	42	static int init(struct sr_context *sr_ctx)
	43	{
	44	return std_init(sr_ctx, di, LOG_PREFIX);
	45	}
	46
	47	static GSList scan(GSList options)
	48	{
	49	struct drv_context *drvc;
6b80b80d BG	50	struct dev_context *devc;
6b80b80d BG	51	struct sr_dev_inst *sdi;
dfaee1de	52	GSList *devices;
6b80b80d BG	53	gboolean status;
6b80b80d BG	54	int i;
dfaee1de BG	55
	56	(void)options;
	57
dfaee1de	58	drvc = di->priv;
6b80b80d	59	devices = NULL;
dfaee1de	60
6b80b80d BG	61	devc = g_malloc0(sizeof(struct dev_context));
	62	devc->samplerate = SR_HZ(10);
	63
	64	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	65	sdi->status = SR_ST_INACTIVE;
	66	sdi->model = g_strdup("Acme cape");
	67	sdi->driver = di;
	68	sdi->priv = devc;
	69
	70	status = bl_acme_is_sane();
	71	if (!status)
	72	goto err_out;
	73
	74	/*
	75	* Iterate over all ACME connectors and check if any probes
	76	* are present.
	77	*/
	78	for (i = 0; i < MAX_PROBES; i++) {
	79	/*
	80	* First check if there's an energy probe on this connector. If
	81	* not, and we're already at the fifth probe - see if we can
	82	* detect a temperature probe.
	83	*/
	84	status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
	85	PROBE_NUM(i),
	86	ENRG_PROBE_NAME);
	87	if (status) {
	88	/* Energy probe detected. */
	89	status = bl_acme_register_probe(sdi,
	90	PROBE_ENRG,
	91	bl_acme_get_enrg_addr(i),
	92	PROBE_NUM(i));
	93	if (!status) {
	94	sr_err("Error registering power probe %d",
	95	PROBE_NUM(i));
	96	continue;
	97	}
	98
	99	} else if (i >= TEMP_PRB_START_INDEX) {
	100	status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
	101	PROBE_NUM(i),
	102	TEMP_PROBE_NAME);
	103	if (status) {
	104	/* Temperature probe detected. */
	105	status = bl_acme_register_probe(sdi,PROBE_TEMP,
	106	bl_acme_get_temp_addr(i),
	107	PROBE_NUM(i));
	108	if (!status) {
	109	sr_err("Error registering temp "
	110	"probe %d", PROBE_NUM(i));
	111	continue;
	112	}
	113	}
	114
	115	}
	116	}
	117
	118	devices = g_slist_append(devices, sdi);
	119	drvc->instances = g_slist_append(drvc->instances, sdi);
dfaee1de BG	120
dfaee1de BG	121	return devices;
6b80b80d BG	122
	123	err_out:
	124	g_free(devc);
	125	sr_dev_inst_free(sdi);
	126
	127	return NULL;
dfaee1de BG	128	}
	129
	130	static GSList *dev_list(void)
	131	{
	132	return ((struct drv_context *)(di->priv))->instances;
	133	}
	134
	135	static int dev_clear(void)
	136	{
	137	return std_dev_clear(di, NULL);
	138	}
	139
	140	static int dev_open(struct sr_dev_inst *sdi)
	141	{
	142	(void)sdi;
	143
6b80b80d	144	/* Nothing to do here. */
dfaee1de BG	145	sdi->status = SR_ST_ACTIVE;
	146
	147	return SR_OK;
	148	}
	149
	150	static int dev_close(struct sr_dev_inst *sdi)
	151	{
	152	(void)sdi;
	153
6b80b80d	154	/* Nothing to do here. */
dfaee1de BG	155	sdi->status = SR_ST_INACTIVE;
	156
	157	return SR_OK;
	158	}
	159
	160	static int cleanup(void)
	161	{
	162	dev_clear();
	163
dfaee1de BG	164	return SR_OK;
	165	}
	166
6b80b80d BG	167	static int config_get(uint32_t key, GVariant **data,
	168	const struct sr_dev_inst *sdi,
	169	const struct sr_channel_group *cg)
dfaee1de	170	{
6b80b80d	171	struct dev_context *devc;
dfaee1de	172	int ret;
61f2b7f7	173	uint64_t shunt;
740ad48a	174	gboolean power_off;
dfaee1de	175
6b80b80d BG	176	devc = sdi->priv;
6b80b80d BG	177
dfaee1de BG	178	ret = SR_OK;
dfaee1de BG	179	switch (key) {
6b80b80d BG	180	case SR_CONF_LIMIT_SAMPLES:
	181	*data = g_variant_new_uint64(devc->limit_samples);
	182	break;
	183	case SR_CONF_LIMIT_MSEC:
	184	*data = g_variant_new_uint64(devc->limit_msec);
	185	break;
	186	case SR_CONF_SAMPLERATE:
	187	*data = g_variant_new_uint64(devc->samplerate);
	188	break;
61f2b7f7 BG	189	case SR_CONF_PROBE_FACTOR:
	190	if (!cg)
	191	return SR_ERR_CHANNEL_GROUP;
	192	ret = bl_acme_get_shunt(cg, &shunt);
	193	if (ret == SR_OK)
	194	*data = g_variant_new_uint64(shunt);
	195	break;
740ad48a BG	196	case SR_CONF_POWER_OFF:
	197	if (!cg)
	198	return SR_ERR_CHANNEL_GROUP;
	199	ret = bl_acme_read_power_state(cg, &power_off);
	200	if (ret == SR_OK)
	201	*data = g_variant_new_boolean(power_off);
	202	break;
dfaee1de BG	203	default:
	204	return SR_ERR_NA;
	205	}
	206
	207	return ret;
	208	}
	209
6b80b80d BG	210	static int config_set(uint32_t key, GVariant *data,
	211	const struct sr_dev_inst *sdi,
	212	const struct sr_channel_group *cg)
dfaee1de	213	{
6b80b80d BG	214	struct dev_context *devc;
6b80b80d BG	215	uint64_t samplerate;
dfaee1de BG	216	int ret;
dfaee1de BG	217
dfaee1de BG	218	if (sdi->status != SR_ST_ACTIVE)
	219	return SR_ERR_DEV_CLOSED;
	220
6b80b80d BG	221	devc = sdi->priv;
6b80b80d BG	222
dfaee1de BG	223	ret = SR_OK;
dfaee1de BG	224	switch (key) {
6b80b80d BG	225	case SR_CONF_LIMIT_SAMPLES:
	226	devc->limit_samples = g_variant_get_uint64(data);
	227	devc->limit_msec = 0;
	228	sr_dbg("Setting sample limit to %" PRIu64,
	229	devc->limit_samples);
	230	break;
	231	case SR_CONF_LIMIT_MSEC:
	232	devc->limit_msec = g_variant_get_uint64(data) * 1000;
	233	devc->limit_samples = 0;
	234	sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
	235	break;
	236	case SR_CONF_SAMPLERATE:
	237	samplerate = g_variant_get_uint64(data);
	238	if (samplerate > MAX_SAMPLE_RATE) {
	239	sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
	240	ret = SR_ERR_SAMPLERATE;
	241	break;
	242	}
	243	devc->samplerate = samplerate;
	244	sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
	245	break;
61f2b7f7 BG	246	case SR_CONF_PROBE_FACTOR:
	247	if (!cg)
	248	return SR_ERR_CHANNEL_GROUP;
	249	ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
	250	break;
740ad48a BG	251	case SR_CONF_POWER_OFF:
	252	if (!cg)
	253	return SR_ERR_CHANNEL_GROUP;
	254	ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
	255	break;
dfaee1de BG	256	default:
	257	ret = SR_ERR_NA;
	258	}
	259
	260	return ret;
	261	}
	262
6b80b80d BG	263	static int config_list(uint32_t key, GVariant **data,
	264	const struct sr_dev_inst *sdi,
	265	const struct sr_channel_group *cg)
dfaee1de	266	{
6b80b80d BG	267	GVariant *gvar;
6b80b80d BG	268	GVariantBuilder gvb;
dfaee1de BG	269	int ret;
	270
	271	(void)sdi;
dfaee1de BG	272	(void)cg;
	273
	274	ret = SR_OK;
	275	switch (key) {
6b80b80d BG	276	case SR_CONF_DEVICE_OPTIONS:
	277	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	278	devopts,
	279	ARRAY_SIZE(devopts),
	280	sizeof(uint32_t));
	281	break;
	282	case SR_CONF_SAMPLERATE:
	283	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	284	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	285	samplerates,
	286	ARRAY_SIZE(samplerates),
	287	sizeof(uint64_t));
	288	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	289	*data = g_variant_builder_end(&gvb);
	290	break;
dfaee1de BG	291	default:
	292	return SR_ERR_NA;
	293	}
	294
	295	return ret;
	296	}
	297
6b80b80d	298	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
dfaee1de	299	{
6b80b80d BG	300	struct dev_context *devc;
6b80b80d BG	301
dfaee1de BG	302	(void)cb_data;
	303
	304	if (sdi->status != SR_ST_ACTIVE)
	305	return SR_ERR_DEV_CLOSED;
	306
6b80b80d BG	307	devc = sdi->priv;
	308	devc->samples_read = 0;
	309
	310	if (pipe(devc->pipe_fds)) {
	311	sr_err("Error setting up pipe");
	312	return SR_ERR;
	313	}
	314
	315	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	316	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	317	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	318	g_io_channel_set_buffered(devc->channel, FALSE);
	319
	320	sr_session_source_add_channel(sdi->session, devc->channel,
	321	G_IO_IN \| G_IO_ERR, 1,
	322	bl_acme_receive_data, (void *)sdi);
	323
	324	/* Send header packet to the session bus. */
	325	std_session_send_df_header(sdi, LOG_PREFIX);
	326	devc->start_time = g_get_monotonic_time();
dfaee1de BG	327
	328	return SR_OK;
	329	}
	330
	331	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	332	{
6b80b80d BG	333	struct sr_datafeed_packet packet;
	334	struct dev_context *devc;
	335
dfaee1de BG	336	(void)cb_data;
dfaee1de BG	337
6b80b80d BG	338	devc = sdi->priv;
6b80b80d BG	339
dfaee1de BG	340	if (sdi->status != SR_ST_ACTIVE)
	341	return SR_ERR_DEV_CLOSED;
	342
6b80b80d BG	343	sr_session_source_remove_channel(sdi->session, devc->channel);
	344	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	345	g_io_channel_unref(devc->channel);
	346	devc->channel = NULL;
	347
	348	/* Send last packet. */
	349	packet.type = SR_DF_END;
	350	sr_session_send(sdi, &packet);
dfaee1de BG	351
	352	return SR_OK;
	353	}
	354
	355	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	356	.name = "baylibre-acme",
6b80b80d	357	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
dfaee1de BG	358	.api_version = 1,
	359	.init = init,
	360	.cleanup = cleanup,
	361	.scan = scan,
	362	.dev_list = dev_list,
	363	.dev_clear = dev_clear,
	364	.config_get = config_get,
	365	.config_set = config_set,
	366	.config_list = config_list,
	367	.dev_open = dev_open,
	368	.dev_close = dev_close,
	369	.dev_acquisition_start = dev_acquisition_start,
	370	.dev_acquisition_stop = dev_acquisition_stop,
	371	.priv = NULL,
	372	};