[libsigrok.git] / src / hardware / beaglelogic / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 Kumar Abhishek <abhishek@theembeddedkitchen.net>
 *
 * 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"
#include "beaglelogic.h"

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

/* Scan options */
static const uint32_t scanopts[] = {
	SR_CONF_NUM_LOGIC_CHANNELS,
};

/* Hardware capabilities */
static const uint32_t devopts[] = {
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_NUM_LOGIC_CHANNELS | SR_CONF_GET,
};

/* Trigger matching capabilities */
static const int32_t soft_trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
	SR_TRIGGER_EDGE,
};

/* Channels are numbered 0-13 */
SR_PRIV const char *beaglelogic_channel_names[NUM_CHANNELS + 1] = {
	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39", "P8_40",
	"P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20", NULL,
};

/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
static const uint64_t samplerates[] = {
	SR_HZ(10),
	SR_MHZ(100),
	SR_HZ(1),
};

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

static struct dev_context *beaglelogic_devc_alloc(void)
{
	struct dev_context *devc;

	devc = g_malloc0(sizeof(struct dev_context));

	/* Default non-zero values (if any) */
	devc->fd = -1;
	devc->limit_samples = (uint64_t)-1;

	return devc;
}

static GSList *scan(GSList *options)
{
	struct drv_context *drvc;
	GSList *devices, *l;
	struct sr_config *src;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	int i, maxch;

	devices = NULL;
	drvc = di->priv;
	drvc->instances = NULL;

	/* Probe for /dev/beaglelogic */
	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
		return NULL;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->model = g_strdup("BeagleLogic");
	sdi->version = g_strdup("1.0");
	sdi->driver = di;

	/* Unless explicitly specified, keep max channels to 8 only */
	maxch = 8;
	for (l = options; l; l = l->next) {
		src = l->data;
		if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
			maxch = g_variant_get_int32(src->data);
	}

	/* We need to test for number of channels by opening the node */
	devc = beaglelogic_devc_alloc();

	if (beaglelogic_open_nonblock(devc) != SR_OK) {
		g_free(devc);
		sr_dev_inst_free(sdi);

		return NULL;
	}

	if (maxch > 8) {
		maxch = NUM_CHANNELS;
		devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	} else {
		maxch = 8;
		devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	}

	beaglelogic_set_sampleunit(devc);
	beaglelogic_close(devc);

	/* Signal */
	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);

	/* Fill the channels */
	for (i = 0; i < maxch; i++)
		sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
				beaglelogic_channel_names[i]);

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

	return devices;
}

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)
{
	struct dev_context *devc = sdi->priv;

	/* Open BeagleLogic */
	if (beaglelogic_open_nonblock(devc))
		return SR_ERR;

	/* Set fd and local attributes */
	devc->pollfd.fd = devc->fd;
	devc->pollfd.events = G_IO_IN;

	/* Get the default attributes */
	beaglelogic_get_samplerate(devc);
	beaglelogic_get_sampleunit(devc);
	beaglelogic_get_triggerflags(devc);
	beaglelogic_get_buffersize(devc);
	beaglelogic_get_bufunitsize(devc);

	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
	if (beaglelogic_mmap(devc) != SR_OK) {
		sr_err("Unable to map capture buffer");
		beaglelogic_close(devc);
		return SR_ERR;
	}

	/* We're good to go now */
	sdi->status = SR_ST_ACTIVE;
	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;

	if (sdi->status == SR_ST_ACTIVE) {
		/* Close the memory mapping and the file */
		beaglelogic_munmap(devc);
		beaglelogic_close(devc);
	}
	sdi->status = SR_ST_INACTIVE;
	return SR_OK;
}

static int cleanup(void)
{
	struct drv_context *drvc;
	struct sr_dev_inst *sdi;
	GSList *l;

	/* unused driver */
	if (!(drvc = di->priv))
		return SR_OK;

	/* Clean up the instances */
	for (l = drvc->instances; l; l = l->next) {
		sdi = l->data;
		di->dev_close(sdi);
		g_free(sdi->priv);
		sr_dev_inst_free(sdi);
	}
	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	di->priv = NULL;

	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 = sdi->priv;
	(void)cg;

	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;

	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;

	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;

	case SR_CONF_NUM_LOGIC_CHANNELS:
		*data = g_variant_new_uint32(g_slist_length(sdi->channels));
		break;

	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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 = sdi->priv;
	uint64_t tmp_u64;
	(void)cg;

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

	switch (key) {
	case SR_CONF_SAMPLERATE:
		devc->cur_samplerate = g_variant_get_uint64(data);
		return beaglelogic_set_samplerate(devc);

	case SR_CONF_LIMIT_SAMPLES:
		tmp_u64 = g_variant_get_uint64(data);
		devc->limit_samples = tmp_u64;
		devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;

		/* Check if we have sufficient buffer size */
		tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
		if (tmp_u64 > devc->buffersize) {
			sr_warn("Insufficient buffer space has been allocated.");
			sr_warn("Please use \'echo <size in bytes> > "\
				BEAGLELOGIC_SYSFS_ATTR(memalloc) \
				"\' as root to increase the buffer size, this"\
				" capture is now truncated to %d Msamples",
				devc->buffersize /
				(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
		}
		return beaglelogic_set_triggerflags(devc);

	case SR_CONF_CAPTURE_RATIO:
		devc->capture_ratio = g_variant_get_uint64(data);
		if (devc->capture_ratio > 100) {
			devc->capture_ratio = 0;
			return SR_ERR;
		}
		return SR_OK;

	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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

	(void)sdi;
	(void)data;
	(void)cg;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	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;
	case SR_CONF_TRIGGER_MATCH:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
				sizeof(int32_t));
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

/* get a sane timeout for poll() */
#define BUFUNIT_TIMEOUT_MS(devc)	(100 + ((devc->bufunitsize * 1000) / \
				(uint32_t)(devc->cur_samplerate)))

static int dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	(void)cb_data;
	struct dev_context *devc = sdi->priv;
	struct sr_trigger *trigger;

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

	/* Save user pointer */
	devc->cb_data = cb_data;

	/* Clear capture state */
	devc->bytes_read = 0;
	devc->offset = 0;

	/* Configure channels */
	devc->sampleunit = g_slist_length(sdi->channels) > 8 ?
			BL_SAMPLEUNIT_16_BITS : BL_SAMPLEUNIT_8_BITS;
	beaglelogic_set_sampleunit(devc);

	/* Configure triggers & send header packet */
	if ((trigger = sr_session_trigger_get(sdi->session))) {
		int pre_trigger_samples = 0;
		if (devc->limit_samples > 0)
			pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
		devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
		if (devc->stl == NULL)
			return SR_ERR_MALLOC;
		devc->trigger_fired = FALSE;
	} else
		devc->trigger_fired = TRUE;
	std_session_send_df_header(cb_data, LOG_PREFIX);

	/* Trigger and add poll on file */
	beaglelogic_start(devc);
	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
			BUFUNIT_TIMEOUT_MS(devc), beaglelogic_receive_data,
			(void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct dev_context *devc = sdi->priv;
	struct sr_datafeed_packet pkt;

	(void)cb_data;

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

	/* Execute a stop on BeagleLogic */
	beaglelogic_stop(devc);

	/* lseek to offset 0, flushes the cache */
	lseek(devc->fd, 0, SEEK_SET);

	/* Remove session source and send EOT packet */
	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	pkt.type = SR_DF_END;
	pkt.payload = NULL;
	sr_session_send(sdi, &pkt);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver beaglelogic_driver_info = {
	.name = "beaglelogic",
	.longname = "BeagleLogic",
	.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
bb993797 KA	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 Kumar Abhishek <abhishek@theembeddedkitchen.net>
	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"
ad9dbc1c	21	#include "beaglelogic.h"
bb993797 KA	22
	23	SR_PRIV struct sr_dev_driver beaglelogic_driver_info;
	24	static struct sr_dev_driver *di = &beaglelogic_driver_info;
	25
138589b0 BV	26	/* Scan options */
	27	static const uint32_t scanopts[] = {
	28	SR_CONF_NUM_LOGIC_CHANNELS,
	29	};
	30
	31	/* Hardware capabilities */
f254bc4b	32	static const uint32_t devopts[] = {
ad9dbc1c	33	SR_CONF_LOGIC_ANALYZER,
ad9dbc1c	34	SR_CONF_CONTINUOUS,
5827f61b BV	35	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	36	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET,
	37	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
e743a47d	38	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
5827f61b	39	SR_CONF_NUM_LOGIC_CHANNELS \| SR_CONF_GET,
ad9dbc1c KA	40	};
	41
	42	/* Trigger matching capabilities */
	43	static const int32_t soft_trigger_matches[] = {
	44	SR_TRIGGER_ZERO,
	45	SR_TRIGGER_ONE,
	46	SR_TRIGGER_RISING,
	47	SR_TRIGGER_FALLING,
	48	SR_TRIGGER_EDGE,
	49	};
	50
	51	/* Channels are numbered 0-13 */
	52	SR_PRIV const char *beaglelogic_channel_names[NUM_CHANNELS + 1] = {
	53	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39", "P8_40",
	54	"P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20", NULL,
	55	};
	56
	57	/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
	58	static const uint64_t samplerates[] = {
138589b0 BV	59	SR_HZ(10),
	60	SR_MHZ(100),
	61	SR_HZ(1),
ad9dbc1c KA	62	};
ad9dbc1c KA	63
bb993797 KA	64	static int init(struct sr_context *sr_ctx)
	65	{
	66	return std_init(sr_ctx, di, LOG_PREFIX);
	67	}
	68
f57d8ffe	69	static struct dev_context *beaglelogic_devc_alloc(void)
ad9dbc1c KA	70	{
	71	struct dev_context *devc;
	72
f57d8ffe	73	devc = g_malloc0(sizeof(struct dev_context));
ad9dbc1c KA	74
	75	/* Default non-zero values (if any) */
	76	devc->fd = -1;
	77	devc->limit_samples = (uint64_t)-1;
	78
	79	return devc;
	80	}
	81
bb993797 KA	82	static GSList scan(GSList options)
	83	{
	84	struct drv_context *drvc;
ad9dbc1c KA	85	GSList devices, l;
	86	struct sr_config *src;
	87	struct sr_dev_inst *sdi;
	88	struct dev_context *devc;
ad9dbc1c	89	int i, maxch;
bb993797 KA	90
	91	devices = NULL;
	92	drvc = di->priv;
	93	drvc->instances = NULL;
	94
ad9dbc1c KA	95	/* Probe for /dev/beaglelogic */
	96	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
	97	return NULL;
	98
aac29cc1	99	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	100	sdi->status = SR_ST_INACTIVE;
	101	sdi->model = g_strdup("BeagleLogic");
	102	sdi->version = g_strdup("1.0");
ad9dbc1c KA	103	sdi->driver = di;
	104
	105	/* Unless explicitly specified, keep max channels to 8 only */
	106	maxch = 8;
	107	for (l = options; l; l = l->next) {
	108	src = l->data;
	109	if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
	110	maxch = g_variant_get_int32(src->data);
	111	}
	112
	113	/* We need to test for number of channels by opening the node */
	114	devc = beaglelogic_devc_alloc();
	115
	116	if (beaglelogic_open_nonblock(devc) != SR_OK) {
	117	g_free(devc);
	118	sr_dev_inst_free(sdi);
	119
	120	return NULL;
	121	}
	122
	123	if (maxch > 8) {
	124	maxch = NUM_CHANNELS;
	125	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	126	} else {
	127	maxch = 8;
	128	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	129	}
	130
	131	beaglelogic_set_sampleunit(devc);
	132	beaglelogic_close(devc);
	133
	134	/* Signal */
	135	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	136
	137	/* Fill the channels */
5e23fcab ML	138	for (i = 0; i < maxch; i++)
5e23fcab ML	139	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
c368e6f3	140	beaglelogic_channel_names[i]);
ad9dbc1c KA	141
	142	sdi->priv = devc;
	143	drvc->instances = g_slist_append(drvc->instances, sdi);
	144	devices = g_slist_append(devices, sdi);
bb993797 KA	145
	146	return devices;
	147	}
	148
	149	static GSList *dev_list(void)
	150	{
	151	return ((struct drv_context *)(di->priv))->instances;
	152	}
	153
	154	static int dev_clear(void)
	155	{
	156	return std_dev_clear(di, NULL);
	157	}
	158
	159	static int dev_open(struct sr_dev_inst *sdi)
	160	{
ad9dbc1c KA	161	struct dev_context *devc = sdi->priv;
	162
	163	/* Open BeagleLogic */
	164	if (beaglelogic_open_nonblock(devc))
	165	return SR_ERR;
	166
	167	/* Set fd and local attributes */
	168	devc->pollfd.fd = devc->fd;
	169	devc->pollfd.events = G_IO_IN;
	170
	171	/* Get the default attributes */
	172	beaglelogic_get_samplerate(devc);
	173	beaglelogic_get_sampleunit(devc);
	174	beaglelogic_get_triggerflags(devc);
	175	beaglelogic_get_buffersize(devc);
	176	beaglelogic_get_bufunitsize(devc);
	177
	178	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
	179	if (beaglelogic_mmap(devc) != SR_OK) {
	180	sr_err("Unable to map capture buffer");
	181	beaglelogic_close(devc);
	182	return SR_ERR;
	183	}
bb993797	184
ad9dbc1c	185	/* We're good to go now */
bb993797	186	sdi->status = SR_ST_ACTIVE;
bb993797 KA	187	return SR_OK;
	188	}
	189
	190	static int dev_close(struct sr_dev_inst *sdi)
	191	{
ad9dbc1c	192	struct dev_context *devc = sdi->priv;
bb993797	193
ad9dbc1c KA	194	if (sdi->status == SR_ST_ACTIVE) {
	195	/* Close the memory mapping and the file */
	196	beaglelogic_munmap(devc);
	197	beaglelogic_close(devc);
	198	}
bb993797	199	sdi->status = SR_ST_INACTIVE;
bb993797 KA	200	return SR_OK;
	201	}
	202
	203	static int cleanup(void)
	204	{
ad9dbc1c KA	205	struct drv_context *drvc;
	206	struct sr_dev_inst *sdi;
	207	GSList *l;
	208
	209	/* unused driver */
	210	if (!(drvc = di->priv))
	211	return SR_OK;
	212
	213	/* Clean up the instances */
	214	for (l = drvc->instances; l; l = l->next) {
	215	sdi = l->data;
	216	di->dev_close(sdi);
	217	g_free(sdi->priv);
	218	sr_dev_inst_free(sdi);
	219	}
	220	g_slist_free(drvc->instances);
	221	drvc->instances = NULL;
bb993797	222
ad9dbc1c	223	di->priv = NULL;
bb993797 KA	224
	225	return SR_OK;
	226	}
	227
584560f1	228	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	229	const struct sr_channel_group *cg)
bb993797 KA	230	{
ad9dbc1c	231	struct dev_context *devc = sdi->priv;
bb993797 KA	232	(void)cg;
bb993797 KA	233
bb993797	234	switch (key) {
ad9dbc1c KA	235	case SR_CONF_LIMIT_SAMPLES:
	236	*data = g_variant_new_uint64(devc->limit_samples);
	237	break;
	238
	239	case SR_CONF_SAMPLERATE:
	240	*data = g_variant_new_uint64(devc->cur_samplerate);
	241	break;
	242
e743a47d AJ	243	case SR_CONF_CAPTURE_RATIO:
	244	*data = g_variant_new_uint64(devc->capture_ratio);
	245	break;
	246
ad9dbc1c KA	247	case SR_CONF_NUM_LOGIC_CHANNELS:
	248	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	249	break;
	250
bb993797 KA	251	default:
	252	return SR_ERR_NA;
	253	}
	254
ad9dbc1c	255	return SR_OK;
bb993797 KA	256	}
bb993797 KA	257
584560f1	258	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
bb993797 KA	259	const struct sr_channel_group *cg)
bb993797 KA	260	{
ad9dbc1c KA	261	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	262	uint64_t tmp_u64;
bb993797 KA	263	(void)cg;
	264
	265	if (sdi->status != SR_ST_ACTIVE)
	266	return SR_ERR_DEV_CLOSED;
	267
bb993797	268	switch (key) {
ad9dbc1c KA	269	case SR_CONF_SAMPLERATE:
	270	devc->cur_samplerate = g_variant_get_uint64(data);
	271	return beaglelogic_set_samplerate(devc);
	272
	273	case SR_CONF_LIMIT_SAMPLES:
	274	tmp_u64 = g_variant_get_uint64(data);
	275	devc->limit_samples = tmp_u64;
	276	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	277
	278	/* Check if we have sufficient buffer size */
	279	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	280	if (tmp_u64 > devc->buffersize) {
	281	sr_warn("Insufficient buffer space has been allocated.");
	282	sr_warn("Please use \'echo <size in bytes> > "\
	283	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
	284	"\' as root to increase the buffer size, this"\
	285	" capture is now truncated to %d Msamples",
	286	devc->buffersize /
	287	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	288	}
	289	return beaglelogic_set_triggerflags(devc);
	290
e743a47d AJ	291	case SR_CONF_CAPTURE_RATIO:
	292	devc->capture_ratio = g_variant_get_uint64(data);
	293	if (devc->capture_ratio > 100) {
	294	devc->capture_ratio = 0;
	295	return SR_ERR;
	296	}
	297	return SR_OK;
	298
bb993797	299	default:
ad9dbc1c	300	return SR_ERR_NA;
bb993797 KA	301	}
bb993797 KA	302
ad9dbc1c	303	return SR_OK;
bb993797 KA	304	}
bb993797 KA	305
584560f1	306	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	307	const struct sr_channel_group *cg)
	308	{
	309	int ret;
ad9dbc1c KA	310	GVariant *gvar;
ad9dbc1c KA	311	GVariantBuilder gvb;
bb993797 KA	312
	313	(void)sdi;
	314	(void)data;
	315	(void)cg;
	316
	317	ret = SR_OK;
	318	switch (key) {
138589b0 BV	319	case SR_CONF_SCAN_OPTIONS:
	320	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	321	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	322	break;
ad9dbc1c	323	case SR_CONF_DEVICE_OPTIONS:
584560f1	324	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	325	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
ad9dbc1c KA	326	break;
	327	case SR_CONF_SAMPLERATE:
	328	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	329	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	330	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	331	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	332	*data = g_variant_builder_end(&gvb);
	333	break;
	334	case SR_CONF_TRIGGER_MATCH:
af945a66	335	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
ad9dbc1c KA	336	soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
	337	sizeof(int32_t));
	338	break;
bb993797 KA	339	default:
	340	return SR_ERR_NA;
	341	}
	342
	343	return ret;
	344	}
	345
ad9dbc1c KA	346	/* get a sane timeout for poll() */
	347	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	348	(uint32_t)(devc->cur_samplerate)))
	349
bb993797 KA	350	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	351	void *cb_data)
	352	{
bb993797	353	(void)cb_data;
ad9dbc1c KA	354	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	355	struct sr_trigger *trigger;
bb993797 KA	356
	357	if (sdi->status != SR_ST_ACTIVE)
	358	return SR_ERR_DEV_CLOSED;
	359
ad9dbc1c KA	360	/* Save user pointer */
	361	devc->cb_data = cb_data;
	362
	363	/* Clear capture state */
	364	devc->bytes_read = 0;
	365	devc->offset = 0;
	366
	367	/* Configure channels */
	368	devc->sampleunit = g_slist_length(sdi->channels) > 8 ?
	369	BL_SAMPLEUNIT_16_BITS : BL_SAMPLEUNIT_8_BITS;
	370	beaglelogic_set_sampleunit(devc);
	371
	372	/* Configure triggers & send header packet */
	373	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	374	int pre_trigger_samples = 0;
	375	if (devc->limit_samples > 0)
	376	pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
	377	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
	378	if (devc->stl == NULL)
	379	return SR_ERR_MALLOC;
ad9dbc1c KA	380	devc->trigger_fired = FALSE;
	381	} else
	382	devc->trigger_fired = TRUE;
	383	std_session_send_df_header(cb_data, LOG_PREFIX);
	384
	385	/* Trigger and add poll on file */
	386	beaglelogic_start(devc);
	387	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	388	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_receive_data,
	389	(void *)sdi);
bb993797 KA	390
	391	return SR_OK;
	392	}
	393
	394	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	395	{
ad9dbc1c KA	396	struct dev_context *devc = sdi->priv;
	397	struct sr_datafeed_packet pkt;
	398
bb993797 KA	399	(void)cb_data;
	400
	401	if (sdi->status != SR_ST_ACTIVE)
	402	return SR_ERR_DEV_CLOSED;
	403
ad9dbc1c KA	404	/* Execute a stop on BeagleLogic */
	405	beaglelogic_stop(devc);
	406
	407	/* lseek to offset 0, flushes the cache */
	408	lseek(devc->fd, 0, SEEK_SET);
	409
	410	/* Remove session source and send EOT packet */
	411	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	412	pkt.type = SR_DF_END;
	413	pkt.payload = NULL;
	414	sr_session_send(sdi, &pkt);
bb993797 KA	415
	416	return SR_OK;
	417	}
	418
	419	SR_PRIV struct sr_dev_driver beaglelogic_driver_info = {
	420	.name = "beaglelogic",
	421	.longname = "BeagleLogic",
	422	.api_version = 1,
	423	.init = init,
	424	.cleanup = cleanup,
	425	.scan = scan,
	426	.dev_list = dev_list,
	427	.dev_clear = dev_clear,
	428	.config_get = config_get,
	429	.config_set = config_set,
	430	.config_list = config_list,
	431	.dev_open = dev_open,
	432	.dev_close = dev_close,
	433	.dev_acquisition_start = dev_acquisition_start,
	434	.dev_acquisition_stop = dev_acquisition_stop,
	435	.priv = NULL,
	436	};