[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->vendor = g_strdup("BayLibre");
	sdi->model = g_strdup("ACME");
	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;
3d14ce49 UH	66	sdi->vendor = g_strdup("BayLibre");
3d14ce49 UH	67	sdi->model = g_strdup("ACME");
6b80b80d BG	68	sdi->driver = di;
	69	sdi->priv = devc;
	70
	71	status = bl_acme_is_sane();
	72	if (!status)
	73	goto err_out;
	74
	75	/*
	76	* Iterate over all ACME connectors and check if any probes
	77	* are present.
	78	*/
	79	for (i = 0; i < MAX_PROBES; i++) {
	80	/*
	81	* First check if there's an energy probe on this connector. If
	82	* not, and we're already at the fifth probe - see if we can
	83	* detect a temperature probe.
	84	*/
	85	status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
391e23a9	86	PROBE_NUM(i), ENRG_PROBE_NAME);
6b80b80d BG	87	if (status) {
6b80b80d BG	88	/* Energy probe detected. */
391e23a9 UH	89	status = bl_acme_register_probe(sdi, PROBE_ENRG,
391e23a9 UH	90	bl_acme_get_enrg_addr(i), PROBE_NUM(i));
6b80b80d BG	91	if (!status) {
	92	sr_err("Error registering power probe %d",
	93	PROBE_NUM(i));
	94	continue;
	95	}
6b80b80d BG	96	} else if (i >= TEMP_PRB_START_INDEX) {
6b80b80d BG	97	status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
391e23a9	98	PROBE_NUM(i), TEMP_PROBE_NAME);
6b80b80d BG	99	if (status) {
	100	/* Temperature probe detected. */
	101	status = bl_acme_register_probe(sdi,PROBE_TEMP,
391e23a9	102	bl_acme_get_temp_addr(i), PROBE_NUM(i));
6b80b80d BG	103	if (!status) {
	104	sr_err("Error registering temp "
	105	"probe %d", PROBE_NUM(i));
	106	continue;
	107	}
	108	}
6b80b80d BG	109	}
	110	}
	111
	112	devices = g_slist_append(devices, sdi);
	113	drvc->instances = g_slist_append(drvc->instances, sdi);
dfaee1de BG	114
dfaee1de BG	115	return devices;
6b80b80d BG	116
	117	err_out:
	118	g_free(devc);
	119	sr_dev_inst_free(sdi);
	120
	121	return NULL;
dfaee1de BG	122	}
	123
	124	static GSList *dev_list(void)
	125	{
	126	return ((struct drv_context *)(di->priv))->instances;
	127	}
	128
	129	static int dev_clear(void)
	130	{
	131	return std_dev_clear(di, NULL);
	132	}
	133
	134	static int dev_open(struct sr_dev_inst *sdi)
	135	{
	136	(void)sdi;
	137
6b80b80d	138	/* Nothing to do here. */
dfaee1de BG	139	sdi->status = SR_ST_ACTIVE;
	140
	141	return SR_OK;
	142	}
	143
	144	static int dev_close(struct sr_dev_inst *sdi)
	145	{
	146	(void)sdi;
	147
6b80b80d	148	/* Nothing to do here. */
dfaee1de BG	149	sdi->status = SR_ST_INACTIVE;
	150
	151	return SR_OK;
	152	}
	153
	154	static int cleanup(void)
	155	{
	156	dev_clear();
	157
dfaee1de BG	158	return SR_OK;
	159	}
	160
6b80b80d BG	161	static int config_get(uint32_t key, GVariant **data,
	162	const struct sr_dev_inst *sdi,
	163	const struct sr_channel_group *cg)
dfaee1de	164	{
6b80b80d	165	struct dev_context *devc;
dfaee1de	166	int ret;
61f2b7f7	167	uint64_t shunt;
740ad48a	168	gboolean power_off;
dfaee1de	169
6b80b80d BG	170	devc = sdi->priv;
6b80b80d BG	171
dfaee1de BG	172	ret = SR_OK;
dfaee1de BG	173	switch (key) {
6b80b80d BG	174	case SR_CONF_LIMIT_SAMPLES:
	175	*data = g_variant_new_uint64(devc->limit_samples);
	176	break;
	177	case SR_CONF_LIMIT_MSEC:
	178	*data = g_variant_new_uint64(devc->limit_msec);
	179	break;
	180	case SR_CONF_SAMPLERATE:
	181	*data = g_variant_new_uint64(devc->samplerate);
	182	break;
61f2b7f7 BG	183	case SR_CONF_PROBE_FACTOR:
	184	if (!cg)
	185	return SR_ERR_CHANNEL_GROUP;
	186	ret = bl_acme_get_shunt(cg, &shunt);
	187	if (ret == SR_OK)
	188	*data = g_variant_new_uint64(shunt);
	189	break;
740ad48a BG	190	case SR_CONF_POWER_OFF:
	191	if (!cg)
	192	return SR_ERR_CHANNEL_GROUP;
	193	ret = bl_acme_read_power_state(cg, &power_off);
	194	if (ret == SR_OK)
	195	*data = g_variant_new_boolean(power_off);
	196	break;
dfaee1de BG	197	default:
	198	return SR_ERR_NA;
	199	}
	200
	201	return ret;
	202	}
	203
6b80b80d BG	204	static int config_set(uint32_t key, GVariant *data,
	205	const struct sr_dev_inst *sdi,
	206	const struct sr_channel_group *cg)
dfaee1de	207	{
6b80b80d BG	208	struct dev_context *devc;
6b80b80d BG	209	uint64_t samplerate;
dfaee1de BG	210	int ret;
dfaee1de BG	211
dfaee1de BG	212	if (sdi->status != SR_ST_ACTIVE)
	213	return SR_ERR_DEV_CLOSED;
	214
6b80b80d BG	215	devc = sdi->priv;
6b80b80d BG	216
dfaee1de BG	217	ret = SR_OK;
dfaee1de BG	218	switch (key) {
6b80b80d BG	219	case SR_CONF_LIMIT_SAMPLES:
	220	devc->limit_samples = g_variant_get_uint64(data);
	221	devc->limit_msec = 0;
391e23a9	222	sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
6b80b80d BG	223	break;
	224	case SR_CONF_LIMIT_MSEC:
	225	devc->limit_msec = g_variant_get_uint64(data) * 1000;
	226	devc->limit_samples = 0;
	227	sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
	228	break;
	229	case SR_CONF_SAMPLERATE:
	230	samplerate = g_variant_get_uint64(data);
	231	if (samplerate > MAX_SAMPLE_RATE) {
	232	sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
	233	ret = SR_ERR_SAMPLERATE;
	234	break;
	235	}
	236	devc->samplerate = samplerate;
	237	sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
	238	break;
61f2b7f7 BG	239	case SR_CONF_PROBE_FACTOR:
	240	if (!cg)
	241	return SR_ERR_CHANNEL_GROUP;
	242	ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
	243	break;
740ad48a BG	244	case SR_CONF_POWER_OFF:
	245	if (!cg)
	246	return SR_ERR_CHANNEL_GROUP;
	247	ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
	248	break;
dfaee1de BG	249	default:
	250	ret = SR_ERR_NA;
	251	}
	252
	253	return ret;
	254	}
	255
6b80b80d BG	256	static int config_list(uint32_t key, GVariant **data,
	257	const struct sr_dev_inst *sdi,
	258	const struct sr_channel_group *cg)
dfaee1de	259	{
6b80b80d BG	260	GVariant *gvar;
6b80b80d BG	261	GVariantBuilder gvb;
dfaee1de BG	262	int ret;
	263
	264	(void)sdi;
dfaee1de BG	265	(void)cg;
	266
	267	ret = SR_OK;
	268	switch (key) {
6b80b80d BG	269	case SR_CONF_DEVICE_OPTIONS:
6b80b80d BG	270	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
391e23a9	271	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
6b80b80d BG	272	break;
	273	case SR_CONF_SAMPLERATE:
	274	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	275	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
391e23a9	276	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
6b80b80d BG	277	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	278	*data = g_variant_builder_end(&gvb);
	279	break;
dfaee1de BG	280	default:
	281	return SR_ERR_NA;
	282	}
	283
	284	return ret;
	285	}
	286
6b80b80d	287	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
dfaee1de	288	{
6b80b80d BG	289	struct dev_context *devc;
6b80b80d BG	290
dfaee1de BG	291	(void)cb_data;
	292
	293	if (sdi->status != SR_ST_ACTIVE)
	294	return SR_ERR_DEV_CLOSED;
	295
6b80b80d BG	296	devc = sdi->priv;
	297	devc->samples_read = 0;
	298
	299	if (pipe(devc->pipe_fds)) {
	300	sr_err("Error setting up pipe");
	301	return SR_ERR;
	302	}
	303
	304	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	305	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	306	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	307	g_io_channel_set_buffered(devc->channel, FALSE);
	308
	309	sr_session_source_add_channel(sdi->session, devc->channel,
391e23a9	310	G_IO_IN \| G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
6b80b80d BG	311
	312	/* Send header packet to the session bus. */
	313	std_session_send_df_header(sdi, LOG_PREFIX);
	314	devc->start_time = g_get_monotonic_time();
dfaee1de BG	315
	316	return SR_OK;
	317	}
	318
	319	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	320	{
6b80b80d BG	321	struct sr_datafeed_packet packet;
	322	struct dev_context *devc;
	323
dfaee1de BG	324	(void)cb_data;
dfaee1de BG	325
6b80b80d BG	326	devc = sdi->priv;
6b80b80d BG	327
dfaee1de BG	328	if (sdi->status != SR_ST_ACTIVE)
	329	return SR_ERR_DEV_CLOSED;
	330
6b80b80d BG	331	sr_session_source_remove_channel(sdi->session, devc->channel);
	332	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	333	g_io_channel_unref(devc->channel);
	334	devc->channel = NULL;
	335
	336	/* Send last packet. */
	337	packet.type = SR_DF_END;
	338	sr_session_send(sdi, &packet);
dfaee1de BG	339
	340	return SR_OK;
	341	}
	342
	343	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	344	.name = "baylibre-acme",
6b80b80d	345	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
dfaee1de BG	346	.api_version = 1,
	347	.init = init,
	348	.cleanup = cleanup,
	349	.scan = scan,
	350	.dev_list = dev_list,
	351	.dev_clear = dev_clear,
	352	.config_get = config_get,
	353	.config_set = config_set,
	354	.config_list = config_list,
	355	.dev_open = dev_open,
	356	.dev_close = dev_close,
	357	.dev_acquisition_start = dev_acquisition_start,
	358	.dev_acquisition_stop = dev_acquisition_stop,
	359	.priv = NULL,
	360	};