[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 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,
};

/*
 * Currently there are two channel-group/probe options for ACME:
 *   - SR_CONF_PROBE_FACTOR - allows to modify current shunt resistance
 *     calibration
 *   - SR_CONF_POWER_OFF - allows to remotely cut-off/restore power to
 *     measured devices
 *
 * They are not static - we have to check each probe's capabilities in
 * config_list().
 */
#define MAX_DEVOPTS_CG		2
#define HAS_PROBE_FACTOR	(SR_CONF_PROBE_FACTOR | SR_CONF_GET | SR_CONF_SET)
#define HAS_POWER_OFF		(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_dev_driver *di, struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

static GSList *scan(struct sr_dev_driver *di, 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)
		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(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->priv))->instances;
}

static int dev_clear(const struct sr_dev_driver *di)
{
	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(const struct sr_dev_driver *di)
{
	dev_clear(di);

	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;
		break;
	case SR_CONF_LIMIT_MSEC:
		devc->limit_msec = g_variant_get_uint64(data) * 1000;
		devc->limit_samples = 0;
		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;
		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)
{
	uint32_t devopts_cg[MAX_DEVOPTS_CG];
	GVariant *gvar;
	GVariantBuilder gvb;
	int ret, num_devopts_cg = 0;

	(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:
			if (bl_acme_get_probe_type(cg) == PROBE_ENRG)
				devopts_cg[num_devopts_cg++] = HAS_PROBE_FACTOR;
			if (bl_acme_probe_has_pws(cg))
				devopts_cg[num_devopts_cg++] = HAS_POWER_OFF;

			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts_cg, num_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;
dfaee1de	23
6b80b80d BG	24	static const uint32_t devopts[] = {
	25	SR_CONF_CONTINUOUS \| SR_CONF_SET,
	26	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	27	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
	28	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
5fabeeac BG	29	};
5fabeeac BG	30
1fe04eb8 BG	31	/*
	32	* Currently there are two channel-group/probe options for ACME:
	33	* - SR_CONF_PROBE_FACTOR - allows to modify current shunt resistance
	34	* calibration
	35	* - SR_CONF_POWER_OFF - allows to remotely cut-off/restore power to
	36	* measured devices
	37	*
	38	* They are not static - we have to check each probe's capabilities in
	39	* config_list().
	40	*/
	41	#define MAX_DEVOPTS_CG 2
	42	#define HAS_PROBE_FACTOR (SR_CONF_PROBE_FACTOR \| SR_CONF_GET \| SR_CONF_SET)
	43	#define HAS_POWER_OFF (SR_CONF_POWER_OFF \| SR_CONF_GET \| SR_CONF_SET)
6b80b80d	44
391e23a9	45	#define MAX_SAMPLE_RATE 500 /* In Hz */
6b80b80d BG	46
	47	static const uint64_t samplerates[] = {
	48	SR_HZ(1),
	49	SR_HZ(MAX_SAMPLE_RATE),
	50	SR_HZ(1),
	51	};
	52
4f840ce9	53	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
dfaee1de BG	54	{
	55	return std_init(sr_ctx, di, LOG_PREFIX);
	56	}
	57
4f840ce9	58	static GSList scan(struct sr_dev_driver di, GSList *options)
dfaee1de BG	59	{
dfaee1de BG	60	struct drv_context *drvc;
6b80b80d BG	61	struct dev_context *devc;
6b80b80d BG	62	struct sr_dev_inst *sdi;
dfaee1de	63	GSList *devices;
6b80b80d BG	64	gboolean status;
6b80b80d BG	65	int i;
dfaee1de BG	66
	67	(void)options;
	68
dfaee1de	69	drvc = di->priv;
6b80b80d	70	devices = NULL;
dfaee1de	71
6b80b80d BG	72	devc = g_malloc0(sizeof(struct dev_context));
	73	devc->samplerate = SR_HZ(10);
	74
	75	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	76	sdi->status = SR_ST_INACTIVE;
3d14ce49 UH	77	sdi->vendor = g_strdup("BayLibre");
3d14ce49 UH	78	sdi->model = g_strdup("ACME");
6b80b80d BG	79	sdi->driver = di;
	80	sdi->priv = devc;
	81
	82	status = bl_acme_is_sane();
	83	if (!status)
	84	goto err_out;
	85
	86	/*
	87	* Iterate over all ACME connectors and check if any probes
	88	* are present.
	89	*/
	90	for (i = 0; i < MAX_PROBES; i++) {
	91	/*
	92	* First check if there's an energy probe on this connector. If
	93	* not, and we're already at the fifth probe - see if we can
	94	* detect a temperature probe.
	95	*/
	96	status = bl_acme_detect_probe(bl_acme_get_enrg_addr(i),
391e23a9	97	PROBE_NUM(i), ENRG_PROBE_NAME);
6b80b80d BG	98	if (status) {
6b80b80d BG	99	/* Energy probe detected. */
391e23a9 UH	100	status = bl_acme_register_probe(sdi, PROBE_ENRG,
391e23a9 UH	101	bl_acme_get_enrg_addr(i), PROBE_NUM(i));
6b80b80d BG	102	if (!status) {
	103	sr_err("Error registering power probe %d",
	104	PROBE_NUM(i));
	105	continue;
	106	}
6b80b80d BG	107	} else if (i >= TEMP_PRB_START_INDEX) {
6b80b80d BG	108	status = bl_acme_detect_probe(bl_acme_get_temp_addr(i),
391e23a9	109	PROBE_NUM(i), TEMP_PROBE_NAME);
6b80b80d BG	110	if (status) {
	111	/* Temperature probe detected. */
	112	status = bl_acme_register_probe(sdi,PROBE_TEMP,
391e23a9	113	bl_acme_get_temp_addr(i), PROBE_NUM(i));
6b80b80d BG	114	if (!status) {
	115	sr_err("Error registering temp "
	116	"probe %d", PROBE_NUM(i));
	117	continue;
	118	}
	119	}
6b80b80d BG	120	}
	121	}
	122
380ee96f BG	123	/*
	124	* Let's assume there's no ACME device present if no probe
	125	* has been registered.
	126	*/
98fec29e	127	if (!sdi->channel_groups)
380ee96f BG	128	goto err_out;
380ee96f BG	129
6b80b80d BG	130	devices = g_slist_append(devices, sdi);
6b80b80d BG	131	drvc->instances = g_slist_append(drvc->instances, sdi);
dfaee1de BG	132
dfaee1de BG	133	return devices;
6b80b80d BG	134
	135	err_out:
	136	g_free(devc);
	137	sr_dev_inst_free(sdi);
	138
	139	return NULL;
dfaee1de BG	140	}
dfaee1de BG	141
4f840ce9	142	static GSList dev_list(const struct sr_dev_driver di)
dfaee1de BG	143	{
	144	return ((struct drv_context *)(di->priv))->instances;
	145	}
	146
4f840ce9	147	static int dev_clear(const struct sr_dev_driver *di)
dfaee1de BG	148	{
	149	return std_dev_clear(di, NULL);
	150	}
	151
	152	static int dev_open(struct sr_dev_inst *sdi)
	153	{
	154	(void)sdi;
	155
6b80b80d	156	/* Nothing to do here. */
dfaee1de BG	157	sdi->status = SR_ST_ACTIVE;
	158
	159	return SR_OK;
	160	}
	161
	162	static int dev_close(struct sr_dev_inst *sdi)
	163	{
	164	(void)sdi;
	165
6b80b80d	166	/* Nothing to do here. */
dfaee1de BG	167	sdi->status = SR_ST_INACTIVE;
	168
	169	return SR_OK;
	170	}
	171
4f840ce9	172	static int cleanup(const struct sr_dev_driver *di)
dfaee1de	173	{
4f840ce9	174	dev_clear(di);
dfaee1de	175
dfaee1de BG	176	return SR_OK;
	177	}
	178
6b80b80d BG	179	static int config_get(uint32_t key, GVariant **data,
	180	const struct sr_dev_inst *sdi,
	181	const struct sr_channel_group *cg)
dfaee1de	182	{
6b80b80d	183	struct dev_context *devc;
dfaee1de	184	int ret;
61f2b7f7	185	uint64_t shunt;
740ad48a	186	gboolean power_off;
dfaee1de	187
6b80b80d BG	188	devc = sdi->priv;
6b80b80d BG	189
dfaee1de BG	190	ret = SR_OK;
dfaee1de BG	191	switch (key) {
6b80b80d BG	192	case SR_CONF_LIMIT_SAMPLES:
	193	*data = g_variant_new_uint64(devc->limit_samples);
	194	break;
	195	case SR_CONF_LIMIT_MSEC:
	196	*data = g_variant_new_uint64(devc->limit_msec);
	197	break;
	198	case SR_CONF_SAMPLERATE:
	199	*data = g_variant_new_uint64(devc->samplerate);
	200	break;
61f2b7f7 BG	201	case SR_CONF_PROBE_FACTOR:
	202	if (!cg)
	203	return SR_ERR_CHANNEL_GROUP;
	204	ret = bl_acme_get_shunt(cg, &shunt);
	205	if (ret == SR_OK)
	206	*data = g_variant_new_uint64(shunt);
	207	break;
740ad48a BG	208	case SR_CONF_POWER_OFF:
	209	if (!cg)
	210	return SR_ERR_CHANNEL_GROUP;
	211	ret = bl_acme_read_power_state(cg, &power_off);
	212	if (ret == SR_OK)
	213	*data = g_variant_new_boolean(power_off);
	214	break;
dfaee1de BG	215	default:
	216	return SR_ERR_NA;
	217	}
	218
	219	return ret;
	220	}
	221
6b80b80d BG	222	static int config_set(uint32_t key, GVariant *data,
	223	const struct sr_dev_inst *sdi,
	224	const struct sr_channel_group *cg)
dfaee1de	225	{
6b80b80d BG	226	struct dev_context *devc;
6b80b80d BG	227	uint64_t samplerate;
dfaee1de BG	228	int ret;
dfaee1de BG	229
dfaee1de BG	230	if (sdi->status != SR_ST_ACTIVE)
	231	return SR_ERR_DEV_CLOSED;
	232
6b80b80d BG	233	devc = sdi->priv;
6b80b80d BG	234
dfaee1de BG	235	ret = SR_OK;
dfaee1de BG	236	switch (key) {
6b80b80d BG	237	case SR_CONF_LIMIT_SAMPLES:
	238	devc->limit_samples = g_variant_get_uint64(data);
	239	devc->limit_msec = 0;
6b80b80d BG	240	break;
	241	case SR_CONF_LIMIT_MSEC:
	242	devc->limit_msec = g_variant_get_uint64(data) * 1000;
	243	devc->limit_samples = 0;
6b80b80d BG	244	break;
	245	case SR_CONF_SAMPLERATE:
	246	samplerate = g_variant_get_uint64(data);
	247	if (samplerate > MAX_SAMPLE_RATE) {
	248	sr_err("Maximum sample rate is %d", MAX_SAMPLE_RATE);
	249	ret = SR_ERR_SAMPLERATE;
	250	break;
	251	}
	252	devc->samplerate = samplerate;
6b80b80d	253	break;
61f2b7f7 BG	254	case SR_CONF_PROBE_FACTOR:
	255	if (!cg)
	256	return SR_ERR_CHANNEL_GROUP;
	257	ret = bl_acme_set_shunt(cg, g_variant_get_uint64(data));
	258	break;
740ad48a BG	259	case SR_CONF_POWER_OFF:
	260	if (!cg)
	261	return SR_ERR_CHANNEL_GROUP;
	262	ret = bl_acme_set_power_off(cg, g_variant_get_boolean(data));
	263	break;
dfaee1de BG	264	default:
	265	ret = SR_ERR_NA;
	266	}
	267
	268	return ret;
	269	}
	270
6b80b80d BG	271	static int config_list(uint32_t key, GVariant **data,
	272	const struct sr_dev_inst *sdi,
	273	const struct sr_channel_group *cg)
dfaee1de	274	{
1fe04eb8	275	uint32_t devopts_cg[MAX_DEVOPTS_CG];
6b80b80d BG	276	GVariant *gvar;
6b80b80d BG	277	GVariantBuilder gvb;
1fe04eb8	278	int ret, num_devopts_cg = 0;
dfaee1de BG	279
dfaee1de BG	280	(void)sdi;
dfaee1de BG	281	(void)cg;
	282
	283	ret = SR_OK;
5fabeeac BG	284	if (!cg) {
	285	switch (key) {
	286	case SR_CONF_DEVICE_OPTIONS:
	287	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	288	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	289	break;
	290	case SR_CONF_SAMPLERATE:
	291	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	292	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	293	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	294	g_variant_builder_add(&gvb, "{sv}",
	295	"samplerate-steps", gvar);
	296	*data = g_variant_builder_end(&gvb);
	297	break;
	298	default:
	299	return SR_ERR_NA;
	300	}
	301	} else {
	302	switch (key) {
	303	case SR_CONF_DEVICE_OPTIONS:
1fe04eb8 BG	304	if (bl_acme_get_probe_type(cg) == PROBE_ENRG)
	305	devopts_cg[num_devopts_cg++] = HAS_PROBE_FACTOR;
	306	if (bl_acme_probe_has_pws(cg))
	307	devopts_cg[num_devopts_cg++] = HAS_POWER_OFF;
	308
5fabeeac	309	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
1fe04eb8	310	devopts_cg, num_devopts_cg, sizeof(uint32_t));
5fabeeac BG	311	break;
	312	default:
	313	return SR_ERR_NA;
	314	}
dfaee1de BG	315	}
	316
	317	return ret;
	318	}
	319
6b80b80d	320	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
dfaee1de	321	{
6b80b80d BG	322	struct dev_context *devc;
6b80b80d BG	323
dfaee1de BG	324	(void)cb_data;
	325
	326	if (sdi->status != SR_ST_ACTIVE)
	327	return SR_ERR_DEV_CLOSED;
	328
6b80b80d BG	329	devc = sdi->priv;
	330	devc->samples_read = 0;
	331
	332	if (pipe(devc->pipe_fds)) {
	333	sr_err("Error setting up pipe");
	334	return SR_ERR;
	335	}
	336
	337	devc->channel = g_io_channel_unix_new(devc->pipe_fds[0]);
	338	g_io_channel_set_flags(devc->channel, G_IO_FLAG_NONBLOCK, NULL);
	339	g_io_channel_set_encoding(devc->channel, NULL, NULL);
	340	g_io_channel_set_buffered(devc->channel, FALSE);
	341
	342	sr_session_source_add_channel(sdi->session, devc->channel,
391e23a9	343	G_IO_IN \| G_IO_ERR, 1, bl_acme_receive_data, (void *)sdi);
6b80b80d BG	344
	345	/* Send header packet to the session bus. */
	346	std_session_send_df_header(sdi, LOG_PREFIX);
	347	devc->start_time = g_get_monotonic_time();
dfaee1de BG	348
	349	return SR_OK;
	350	}
	351
	352	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	353	{
6b80b80d BG	354	struct sr_datafeed_packet packet;
	355	struct dev_context *devc;
	356
dfaee1de BG	357	(void)cb_data;
dfaee1de BG	358
6b80b80d BG	359	devc = sdi->priv;
6b80b80d BG	360
dfaee1de BG	361	if (sdi->status != SR_ST_ACTIVE)
	362	return SR_ERR_DEV_CLOSED;
	363
6b80b80d BG	364	sr_session_source_remove_channel(sdi->session, devc->channel);
	365	g_io_channel_shutdown(devc->channel, FALSE, NULL);
	366	g_io_channel_unref(devc->channel);
	367	devc->channel = NULL;
	368
	369	/* Send last packet. */
	370	packet.type = SR_DF_END;
	371	sr_session_send(sdi, &packet);
dfaee1de BG	372
	373	return SR_OK;
	374	}
	375
	376	SR_PRIV struct sr_dev_driver baylibre_acme_driver_info = {
	377	.name = "baylibre-acme",
6b80b80d	378	.longname = "BayLibre ACME (Another Cute Measurement Equipment)",
dfaee1de BG	379	.api_version = 1,
	380	.init = init,
	381	.cleanup = cleanup,
	382	.scan = scan,
	383	.dev_list = dev_list,
	384	.dev_clear = dev_clear,
	385	.config_get = config_get,
	386	.config_set = config_set,
	387	.config_list = config_list,
	388	.dev_open = dev_open,
	389	.dev_close = dev_close,
	390	.dev_acquisition_start = dev_acquisition_start,
	391	.dev_acquisition_stop = dev_acquisition_stop,
	392	.priv = NULL,
	393	};