[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,
};

static const uint32_t devopts_cg[] = {
	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;
				}
			}
		}
	}

	/*
	 * Let's assume there's no ACME device present if no probe
	 * has been registered.
	 */
	if (sdi->channel_groups == NULL)
		goto err_out;

	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;
	if (!cg) {
		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;
		}
	} else {
		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
			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,
5fabeeac BG	30	};
	31
	32	static const uint32_t devopts_cg[] = {
61f2b7f7	33	SR_CONF_PROBE_FACTOR \| SR_CONF_GET \| SR_CONF_SET,
740ad48a	34	SR_CONF_POWER_OFF \| SR_CONF_GET \| SR_CONF_SET,
6b80b80d BG	35	};
6b80b80d BG	36
391e23a9	37	#define MAX_SAMPLE_RATE 500 /* In Hz */
6b80b80d BG	38
	39	static const uint64_t samplerates[] = {
	40	SR_HZ(1),
	41	SR_HZ(MAX_SAMPLE_RATE),
	42	SR_HZ(1),
	43	};
	44
dfaee1de BG	45	static int init(struct sr_context *sr_ctx)
	46	{
	47	return std_init(sr_ctx, di, LOG_PREFIX);
	48	}
	49
	50	static GSList scan(GSList options)
	51	{
	52	struct drv_context *drvc;
6b80b80d BG	53	struct dev_context *devc;
6b80b80d BG	54	struct sr_dev_inst *sdi;
dfaee1de	55	GSList *devices;
6b80b80d BG	56	gboolean status;
6b80b80d BG	57	int i;
dfaee1de BG	58
	59	(void)options;
	60
dfaee1de	61	drvc = di->priv;
6b80b80d	62	devices = NULL;
dfaee1de	63
6b80b80d BG	64	devc = g_malloc0(sizeof(struct dev_context));
	65	devc->samplerate = SR_HZ(10);
	66
	67	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	68	sdi->status = SR_ST_INACTIVE;
3d14ce49 UH	69	sdi->vendor = g_strdup("BayLibre");
3d14ce49 UH	70	sdi->model = g_strdup("ACME");
6b80b80d BG	71	sdi->driver = di;
	72	sdi->priv = devc;
	73
	74	status = bl_acme_is_sane();
	75	if (!status)
	76	goto err_out;
	77
	78	/*
	79	* Iterate over all ACME connectors and check if any probes
	80	* are present.
	81	*/
	82	for (i = 0; i < MAX_PROBES; i++) {
	83	/*
	84	* First check if there's an energy probe on this connector. If
	85	* not, and we're already at the fifth probe - see if we can
	86	* detect a temperature probe.
	87	*/
	88	status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
391e23a9	89	PROBE_NUM(i), ENRG_PROBE_NAME);
6b80b80d BG	90	if (status) {
6b80b80d BG	91	/* Energy probe detected. */
391e23a9 UH	92	status = bl_acme_register_probe(sdi, PROBE_ENRG,
391e23a9 UH	93	bl_acme_get_enrg_addr(i), PROBE_NUM(i));
6b80b80d BG	94	if (!status) {
	95	sr_err("Error registering power probe %d",
	96	PROBE_NUM(i));
	97	continue;
	98	}
6b80b80d BG	99	} else if (i >= TEMP_PRB_START_INDEX) {
6b80b80d BG	100	status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
391e23a9	101	PROBE_NUM(i), TEMP_PROBE_NAME);
6b80b80d BG	102	if (status) {
	103	/* Temperature probe detected. */
	104	status = bl_acme_register_probe(sdi,PROBE_TEMP,
391e23a9	105	bl_acme_get_temp_addr(i), PROBE_NUM(i));
6b80b80d BG	106	if (!status) {
	107	sr_err("Error registering temp "
	108	"probe %d", PROBE_NUM(i));
	109	continue;
	110	}
	111	}
6b80b80d BG	112	}
	113	}
	114
380ee96f BG	115	/*
	116	* Let's assume there's no ACME device present if no probe
	117	* has been registered.
	118	*/
	119	if (sdi->channel_groups == NULL)
	120	goto err_out;
	121
6b80b80d BG	122	devices = g_slist_append(devices, sdi);
6b80b80d BG	123	drvc->instances = g_slist_append(drvc->instances, sdi);
dfaee1de BG	124
dfaee1de BG	125	return devices;
6b80b80d BG	126
	127	err_out:
	128	g_free(devc);
	129	sr_dev_inst_free(sdi);
	130
	131	return NULL;
dfaee1de BG	132	}
	133
	134	static GSList *dev_list(void)
	135	{
	136	return ((struct drv_context *)(di->priv))->instances;
	137	}
	138
	139	static int dev_clear(void)
	140	{
	141	return std_dev_clear(di, NULL);
	142	}
	143
	144	static int dev_open(struct sr_dev_inst *sdi)
	145	{
	146	(void)sdi;
	147
6b80b80d	148	/* Nothing to do here. */
dfaee1de BG	149	sdi->status = SR_ST_ACTIVE;
	150
	151	return SR_OK;
	152	}
	153
	154	static int dev_close(struct sr_dev_inst *sdi)
	155	{
	156	(void)sdi;
	157
6b80b80d	158	/* Nothing to do here. */
dfaee1de BG	159	sdi->status = SR_ST_INACTIVE;
	160
	161	return SR_OK;
	162	}
	163
	164	static int cleanup(void)
	165	{
	166	dev_clear();
	167
dfaee1de BG	168	return SR_OK;
	169	}
	170
6b80b80d BG	171	static int config_get(uint32_t key, GVariant **data,
	172	const struct sr_dev_inst *sdi,
	173	const struct sr_channel_group *cg)
dfaee1de	174	{
6b80b80d	175	struct dev_context *devc;
dfaee1de	176	int ret;
61f2b7f7	177	uint64_t shunt;
740ad48a	178	gboolean power_off;
dfaee1de	179
6b80b80d BG	180	devc = sdi->priv;
6b80b80d BG	181
dfaee1de BG	182	ret = SR_OK;
dfaee1de BG	183	switch (key) {
6b80b80d BG	184	case SR_CONF_LIMIT_SAMPLES:
	185	*data = g_variant_new_uint64(devc->limit_samples);
	186	break;
	187	case SR_CONF_LIMIT_MSEC:
	188	*data = g_variant_new_uint64(devc->limit_msec);
	189	break;
	190	case SR_CONF_SAMPLERATE:
	191	*data = g_variant_new_uint64(devc->samplerate);
	192	break;
61f2b7f7 BG	193	case SR_CONF_PROBE_FACTOR:
	194	if (!cg)
	195	return SR_ERR_CHANNEL_GROUP;
	196	ret = bl_acme_get_shunt(cg, &shunt);
	197	if (ret == SR_OK)
	198	*data = g_variant_new_uint64(shunt);
	199	break;
740ad48a BG	200	case SR_CONF_POWER_OFF:
	201	if (!cg)
	202	return SR_ERR_CHANNEL_GROUP;
	203	ret = bl_acme_read_power_state(cg, &power_off);
	204	if (ret == SR_OK)
	205	*data = g_variant_new_boolean(power_off);
	206	break;
dfaee1de BG	207	default:
	208	return SR_ERR_NA;
	209	}
	210
	211	return ret;
	212	}
	213
6b80b80d BG	214	static int config_set(uint32_t key, GVariant *data,
	215	const struct sr_dev_inst *sdi,
	216	const struct sr_channel_group *cg)
dfaee1de	217	{
6b80b80d BG	218	struct dev_context *devc;
6b80b80d BG	219	uint64_t samplerate;
dfaee1de BG	220	int ret;
dfaee1de BG	221
dfaee1de BG	222	if (sdi->status != SR_ST_ACTIVE)
	223	return SR_ERR_DEV_CLOSED;
	224
6b80b80d BG	225	devc = sdi->priv;
6b80b80d BG	226
dfaee1de BG	227	ret = SR_OK;
dfaee1de BG	228	switch (key) {
6b80b80d BG	229	case SR_CONF_LIMIT_SAMPLES:
	230	devc->limit_samples = g_variant_get_uint64(data);
	231	devc->limit_msec = 0;
391e23a9	232	sr_dbg("Setting sample limit to %" PRIu64, devc->limit_samples);
6b80b80d BG	233	break;
	234	case SR_CONF_LIMIT_MSEC:
	235	devc->limit_msec = g_variant_get_uint64(data) * 1000;
	236	devc->limit_samples = 0;
	237	sr_dbg("Setting time limit to %" PRIu64"ms", devc->limit_msec);
	238	break;
	239	case SR_CONF_SAMPLERATE:
	240	samplerate = g_variant_get_uint64(data);
	241	if (samplerate > MAX_SAMPLE_RATE) {
	242	sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
	243	ret = SR_ERR_SAMPLERATE;
	244	break;
	245	}
	246	devc->samplerate = samplerate;
	247	sr_dbg("Setting samplerate to %" PRIu64, devc->samplerate);
	248	break;
61f2b7f7 BG	249	case SR_CONF_PROBE_FACTOR:
	250	if (!cg)
	251	return SR_ERR_CHANNEL_GROUP;
	252	ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
	253	break;
740ad48a BG	254	case SR_CONF_POWER_OFF:
	255	if (!cg)
	256	return SR_ERR_CHANNEL_GROUP;
	257	ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
	258	break;
dfaee1de BG	259	default:
	260	ret = SR_ERR_NA;
	261	}
	262
	263	return ret;
	264	}
	265
6b80b80d BG	266	static int config_list(uint32_t key, GVariant **data,
	267	const struct sr_dev_inst *sdi,
	268	const struct sr_channel_group *cg)
dfaee1de	269	{
6b80b80d BG	270	GVariant *gvar;
6b80b80d BG	271	GVariantBuilder gvb;
dfaee1de BG	272	int ret;
	273
	274	(void)sdi;
dfaee1de BG	275	(void)cg;
	276
	277	ret = SR_OK;
5fabeeac BG	278	if (!cg) {
	279	switch (key) {
	280	case SR_CONF_DEVICE_OPTIONS:
	281	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	282	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	283	break;
	284	case SR_CONF_SAMPLERATE:
	285	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	286	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	287	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	288	g_variant_builder_add(&gvb, "{sv}",
	289	"samplerate-steps", gvar);
	290	*data = g_variant_builder_end(&gvb);
	291	break;
	292	default:
	293	return SR_ERR_NA;
	294	}
	295	} else {
	296	switch (key) {
	297	case SR_CONF_DEVICE_OPTIONS:
	298	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	299	devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
	300	break;
	301	default:
	302	return SR_ERR_NA;
	303	}
dfaee1de BG	304	}
	305
	306	return ret;
	307	}
	308
6b80b80d	309	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
dfaee1de	310	{
6b80b80d BG	311	struct dev_context *devc;
6b80b80d BG	312
dfaee1de BG	313	(void)cb_data;
	314
	315	if (sdi->status != SR_ST_ACTIVE)
	316	return SR_ERR_DEV_CLOSED;
	317
6b80b80d BG	318	devc = sdi->priv;
	319	devc->samples_read = 0;
	320
	321	if (pipe(devc->pipe_fds)) {
	322	sr_err("Error setting up pipe");
	323	return SR_ERR;
	324	}
	325
	326	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	327	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	328	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	329	g_io_channel_set_buffered(devc->channel, FALSE);
	330
	331	sr_session_source_add_channel(sdi->session, devc->channel,
391e23a9	332	G_IO_IN \| G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
6b80b80d BG	333
	334	/* Send header packet to the session bus. */
	335	std_session_send_df_header(sdi, LOG_PREFIX);
	336	devc->start_time = g_get_monotonic_time();
dfaee1de BG	337
	338	return SR_OK;
	339	}
	340
	341	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	342	{
6b80b80d BG	343	struct sr_datafeed_packet packet;
	344	struct dev_context *devc;
	345
dfaee1de BG	346	(void)cb_data;
dfaee1de BG	347
6b80b80d BG	348	devc = sdi->priv;
6b80b80d BG	349
dfaee1de BG	350	if (sdi->status != SR_ST_ACTIVE)
	351	return SR_ERR_DEV_CLOSED;
	352
6b80b80d BG	353	sr_session_source_remove_channel(sdi->session, devc->channel);
	354	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	355	g_io_channel_unref(devc->channel);
	356	devc->channel = NULL;
	357
	358	/* Send last packet. */
	359	packet.type = SR_DF_END;
	360	sr_session_send(sdi, &packet);
dfaee1de BG	361
	362	return SR_OK;
	363	}
	364
	365	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	366	.name = "baylibre-acme",
6b80b80d	367	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
dfaee1de BG	368	.api_version = 1,
	369	.init = init,
	370	.cleanup = cleanup,
	371	.scan = scan,
	372	.dev_list = dev_list,
	373	.dev_clear = dev_clear,
	374	.config_get = config_get,
	375	.config_set = config_set,
	376	.config_list = config_list,
	377	.dev_open = dev_open,
	378	.dev_close = dev_close,
	379	.dev_acquisition_start = dev_acquisition_start,
	380	.dev_acquisition_stop = dev_acquisition_stop,
	381	.priv = NULL,
	382	};