[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	};
6b80b80d BG	33
391e23a9	34	#define MAX_SAMPLE_RATE 500 /* In Hz */
6b80b80d BG	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;
391e23a9	66	sdi->model = g_strdup("ACME cape");
6b80b80d BG	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),
391e23a9	85	PROBE_NUM(i), ENRG_PROBE_NAME);
6b80b80d BG	86	if (status) {
6b80b80d BG	87	/* Energy probe detected. */
391e23a9 UH	88	status = bl_acme_register_probe(sdi, PROBE_ENRG,
391e23a9 UH	89	bl_acme_get_enrg_addr(i), PROBE_NUM(i));
6b80b80d BG	90	if (!status) {
	91	sr_err("Error registering power probe %d",
	92	PROBE_NUM(i));
	93	continue;
	94	}
6b80b80d BG	95	} else if (i >= TEMP_PRB_START_INDEX) {
6b80b80d BG	96	status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
391e23a9	97	PROBE_NUM(i), TEMP_PROBE_NAME);
6b80b80d BG	98	if (status) {
	99	/* Temperature probe detected. */
	100	status = bl_acme_register_probe(sdi,PROBE_TEMP,
391e23a9	101	bl_acme_get_temp_addr(i), PROBE_NUM(i));
6b80b80d BG	102	if (!status) {
	103	sr_err("Error registering temp "
	104	"probe %d", PROBE_NUM(i));
	105	continue;
	106	}
	107	}
6b80b80d BG	108	}
	109	}
	110
	111	devices = g_slist_append(devices, sdi);
	112	drvc->instances = g_slist_append(drvc->instances, sdi);
dfaee1de BG	113
dfaee1de BG	114	return devices;
6b80b80d BG	115
	116	err_out:
	117	g_free(devc);
	118	sr_dev_inst_free(sdi);
	119
	120	return NULL;
dfaee1de BG	121	}
	122
	123	static GSList *dev_list(void)
	124	{
	125	return ((struct drv_context *)(di->priv))->instances;
	126	}
	127
	128	static int dev_clear(void)
	129	{
	130	return std_dev_clear(di, NULL);
	131	}
	132
	133	static int dev_open(struct sr_dev_inst *sdi)
	134	{
	135	(void)sdi;
	136
6b80b80d	137	/* Nothing to do here. */
dfaee1de BG	138	sdi->status = SR_ST_ACTIVE;
	139
	140	return SR_OK;
	141	}
	142
	143	static int dev_close(struct sr_dev_inst *sdi)
	144	{
	145	(void)sdi;
	146
6b80b80d	147	/* Nothing to do here. */
dfaee1de BG	148	sdi->status = SR_ST_INACTIVE;
	149
	150	return SR_OK;
	151	}
	152
	153	static int cleanup(void)
	154	{
	155	dev_clear();
	156
dfaee1de BG	157	return SR_OK;
	158	}
	159
6b80b80d BG	160	static int config_get(uint32_t key, GVariant **data,
	161	const struct sr_dev_inst *sdi,
	162	const struct sr_channel_group *cg)
dfaee1de	163	{
6b80b80d	164	struct dev_context *devc;
dfaee1de	165	int ret;
61f2b7f7	166	uint64_t shunt;
740ad48a	167	gboolean power_off;
dfaee1de	168
6b80b80d BG	169	devc = sdi->priv;
6b80b80d BG	170
dfaee1de BG	171	ret = SR_OK;
dfaee1de BG	172	switch (key) {
6b80b80d BG	173	case SR_CONF_LIMIT_SAMPLES:
	174	*data = g_variant_new_uint64(devc->limit_samples);
	175	break;
	176	case SR_CONF_LIMIT_MSEC:
	177	*data = g_variant_new_uint64(devc->limit_msec);
	178	break;
	179	case SR_CONF_SAMPLERATE:
	180	*data = g_variant_new_uint64(devc->samplerate);
	181	break;
61f2b7f7 BG	182	case SR_CONF_PROBE_FACTOR:
	183	if (!cg)
	184	return SR_ERR_CHANNEL_GROUP;
	185	ret = bl_acme_get_shunt(cg, &shunt);
	186	if (ret == SR_OK)
	187	*data = g_variant_new_uint64(shunt);
	188	break;
740ad48a BG	189	case SR_CONF_POWER_OFF:
	190	if (!cg)
	191	return SR_ERR_CHANNEL_GROUP;
	192	ret = bl_acme_read_power_state(cg, &power_off);
	193	if (ret == SR_OK)
	194	*data = g_variant_new_boolean(power_off);
	195	break;
dfaee1de BG	196	default:
	197	return SR_ERR_NA;
	198	}
	199
	200	return ret;
	201	}
	202
6b80b80d BG	203	static int config_set(uint32_t key, GVariant *data,
	204	const struct sr_dev_inst *sdi,
	205	const struct sr_channel_group *cg)
dfaee1de	206	{
6b80b80d BG	207	struct dev_context *devc;
6b80b80d BG	208	uint64_t samplerate;
dfaee1de BG	209	int ret;
dfaee1de BG	210
dfaee1de BG	211	if (sdi->status != SR_ST_ACTIVE)
	212	return SR_ERR_DEV_CLOSED;
	213
6b80b80d BG	214	devc = sdi->priv;
6b80b80d BG	215
dfaee1de BG	216	ret = SR_OK;
dfaee1de BG	217	switch (key) {
6b80b80d BG	218	case SR_CONF_LIMIT_SAMPLES:
	219	devc->limit_samples = g_variant_get_uint64(data);
	220	devc->limit_msec = 0;
391e23a9	221	sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
6b80b80d BG	222	break;
	223	case SR_CONF_LIMIT_MSEC:
	224	devc->limit_msec = g_variant_get_uint64(data) * 1000;
	225	devc->limit_samples = 0;
	226	sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
	227	break;
	228	case SR_CONF_SAMPLERATE:
	229	samplerate = g_variant_get_uint64(data);
	230	if (samplerate > MAX_SAMPLE_RATE) {
	231	sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
	232	ret = SR_ERR_SAMPLERATE;
	233	break;
	234	}
	235	devc->samplerate = samplerate;
	236	sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
	237	break;
61f2b7f7 BG	238	case SR_CONF_PROBE_FACTOR:
	239	if (!cg)
	240	return SR_ERR_CHANNEL_GROUP;
	241	ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
	242	break;
740ad48a BG	243	case SR_CONF_POWER_OFF:
	244	if (!cg)
	245	return SR_ERR_CHANNEL_GROUP;
	246	ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
	247	break;
dfaee1de BG	248	default:
	249	ret = SR_ERR_NA;
	250	}
	251
	252	return ret;
	253	}
	254
6b80b80d BG	255	static int config_list(uint32_t key, GVariant **data,
	256	const struct sr_dev_inst *sdi,
	257	const struct sr_channel_group *cg)
dfaee1de	258	{
6b80b80d BG	259	GVariant *gvar;
6b80b80d BG	260	GVariantBuilder gvb;
dfaee1de BG	261	int ret;
	262
	263	(void)sdi;
dfaee1de BG	264	(void)cg;
	265
	266	ret = SR_OK;
	267	switch (key) {
6b80b80d BG	268	case SR_CONF_DEVICE_OPTIONS:
6b80b80d BG	269	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
391e23a9	270	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
6b80b80d BG	271	break;
	272	case SR_CONF_SAMPLERATE:
	273	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	274	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
391e23a9	275	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
6b80b80d BG	276	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	277	*data = g_variant_builder_end(&gvb);
	278	break;
dfaee1de BG	279	default:
	280	return SR_ERR_NA;
	281	}
	282
	283	return ret;
	284	}
	285
6b80b80d	286	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
dfaee1de	287	{
6b80b80d BG	288	struct dev_context *devc;
6b80b80d BG	289
dfaee1de BG	290	(void)cb_data;
	291
	292	if (sdi->status != SR_ST_ACTIVE)
	293	return SR_ERR_DEV_CLOSED;
	294
6b80b80d BG	295	devc = sdi->priv;
	296	devc->samples_read = 0;
	297
	298	if (pipe(devc->pipe_fds)) {
	299	sr_err("Error setting up pipe");
	300	return SR_ERR;
	301	}
	302
	303	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	304	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	305	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	306	g_io_channel_set_buffered(devc->channel, FALSE);
	307
	308	sr_session_source_add_channel(sdi->session, devc->channel,
391e23a9	309	G_IO_IN \| G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
6b80b80d BG	310
	311	/* Send header packet to the session bus. */
	312	std_session_send_df_header(sdi, LOG_PREFIX);
	313	devc->start_time = g_get_monotonic_time();
dfaee1de BG	314
	315	return SR_OK;
	316	}
	317
	318	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	319	{
6b80b80d BG	320	struct sr_datafeed_packet packet;
	321	struct dev_context *devc;
	322
dfaee1de BG	323	(void)cb_data;
dfaee1de BG	324
6b80b80d BG	325	devc = sdi->priv;
6b80b80d BG	326
dfaee1de BG	327	if (sdi->status != SR_ST_ACTIVE)
	328	return SR_ERR_DEV_CLOSED;
	329
6b80b80d BG	330	sr_session_source_remove_channel(sdi->session, devc->channel);
	331	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	332	g_io_channel_unref(devc->channel);
	333	devc->channel = NULL;
	334
	335	/* Send last packet. */
	336	packet.type = SR_DF_END;
	337	sr_session_send(sdi, &packet);
dfaee1de BG	338
	339	return SR_OK;
	340	}
	341
	342	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	343	.name = "baylibre-acme",
6b80b80d	344	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
dfaee1de BG	345	.api_version = 1,
	346	.init = init,
	347	.cleanup = cleanup,
	348	.scan = scan,
	349	.dev_list = dev_list,
	350	.dev_clear = dev_clear,
	351	.config_get = config_get,
	352	.config_set = config_set,
	353	.config_list = config_list,
	354	.dev_open = dev_open,
	355	.dev_close = dev_close,
	356	.dev_acquisition_start = dev_acquisition_start,
	357	.dev_acquisition_stop = dev_acquisition_stop,
	358	.priv = NULL,
	359	};