[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;

/* 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,
};

SR_PRIV const char *channel_names[] = {
	"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",
};

/* 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_dev_driver *di, 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(struct sr_dev_driver *di, 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->context;
	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,
				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(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->context))->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)
{
	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;
	devc->pollfd.revents = 0;

	/* 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(const struct sr_dev_driver *di)
{
	struct drv_context *drvc;
	struct sr_dev_inst *sdi;
	GSList *l;

	/* unused driver */
	if (!(drvc = di->context))
		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;

	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)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)
			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,
	.context = 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
bb993797 KA	23	SR_PRIV struct sr_dev_driver beaglelogic_driver_info;
bb993797	24
138589b0 BV	25	/* Scan options */
	26	static const uint32_t scanopts[] = {
	27	SR_CONF_NUM_LOGIC_CHANNELS,
	28	};
	29
	30	/* Hardware capabilities */
f254bc4b	31	static const uint32_t devopts[] = {
ad9dbc1c	32	SR_CONF_LOGIC_ANALYZER,
ad9dbc1c	33	SR_CONF_CONTINUOUS,
5827f61b BV	34	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	35	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET,
	36	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
e743a47d	37	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
5827f61b	38	SR_CONF_NUM_LOGIC_CHANNELS \| SR_CONF_GET,
ad9dbc1c KA	39	};
	40
	41	/* Trigger matching capabilities */
	42	static const int32_t soft_trigger_matches[] = {
	43	SR_TRIGGER_ZERO,
	44	SR_TRIGGER_ONE,
	45	SR_TRIGGER_RISING,
	46	SR_TRIGGER_FALLING,
	47	SR_TRIGGER_EDGE,
	48	};
	49
0f34cb47 UH	50	SR_PRIV const char *channel_names[] = {
	51	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39",
	52	"P8_40", "P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20",
ad9dbc1c KA	53	};
	54
	55	/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
	56	static const uint64_t samplerates[] = {
138589b0 BV	57	SR_HZ(10),
	58	SR_MHZ(100),
	59	SR_HZ(1),
ad9dbc1c KA	60	};
ad9dbc1c KA	61
4f840ce9	62	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
bb993797 KA	63	{
	64	return std_init(sr_ctx, di, LOG_PREFIX);
	65	}
	66
f57d8ffe	67	static struct dev_context *beaglelogic_devc_alloc(void)
ad9dbc1c KA	68	{
	69	struct dev_context *devc;
	70
f57d8ffe	71	devc = g_malloc0(sizeof(struct dev_context));
ad9dbc1c KA	72
	73	/* Default non-zero values (if any) */
	74	devc->fd = -1;
	75	devc->limit_samples = (uint64_t)-1;
	76
	77	return devc;
	78	}
	79
4f840ce9	80	static GSList scan(struct sr_dev_driver di, GSList *options)
bb993797 KA	81	{
bb993797 KA	82	struct drv_context *drvc;
ad9dbc1c KA	83	GSList devices, l;
	84	struct sr_config *src;
	85	struct sr_dev_inst *sdi;
	86	struct dev_context *devc;
ad9dbc1c	87	int i, maxch;
bb993797 KA	88
bb993797 KA	89	devices = NULL;
41812aca	90	drvc = di->context;
bb993797 KA	91	drvc->instances = NULL;
bb993797 KA	92
ad9dbc1c KA	93	/* Probe for /dev/beaglelogic */
	94	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
	95	return NULL;
	96
aac29cc1	97	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	98	sdi->status = SR_ST_INACTIVE;
	99	sdi->model = g_strdup("BeagleLogic");
	100	sdi->version = g_strdup("1.0");
ad9dbc1c KA	101	sdi->driver = di;
	102
	103	/* Unless explicitly specified, keep max channels to 8 only */
	104	maxch = 8;
	105	for (l = options; l; l = l->next) {
	106	src = l->data;
	107	if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
	108	maxch = g_variant_get_int32(src->data);
	109	}
	110
	111	/* We need to test for number of channels by opening the node */
	112	devc = beaglelogic_devc_alloc();
	113
	114	if (beaglelogic_open_nonblock(devc) != SR_OK) {
	115	g_free(devc);
	116	sr_dev_inst_free(sdi);
	117
	118	return NULL;
	119	}
	120
	121	if (maxch > 8) {
	122	maxch = NUM_CHANNELS;
	123	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	124	} else {
	125	maxch = 8;
	126	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	127	}
	128
	129	beaglelogic_set_sampleunit(devc);
	130	beaglelogic_close(devc);
	131
	132	/* Signal */
	133	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	134
	135	/* Fill the channels */
5e23fcab ML	136	for (i = 0; i < maxch; i++)
5e23fcab ML	137	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
0f34cb47	138	channel_names[i]);
ad9dbc1c KA	139
	140	sdi->priv = devc;
	141	drvc->instances = g_slist_append(drvc->instances, sdi);
	142	devices = g_slist_append(devices, sdi);
bb993797 KA	143
	144	return devices;
	145	}
	146
4f840ce9	147	static GSList dev_list(const struct sr_dev_driver di)
bb993797	148	{
41812aca	149	return ((struct drv_context *)(di->context))->instances;
bb993797 KA	150	}
bb993797 KA	151
4f840ce9	152	static int dev_clear(const struct sr_dev_driver *di)
bb993797 KA	153	{
	154	return std_dev_clear(di, NULL);
	155	}
	156
	157	static int dev_open(struct sr_dev_inst *sdi)
	158	{
ad9dbc1c KA	159	struct dev_context *devc = sdi->priv;
	160
	161	/* Open BeagleLogic */
	162	if (beaglelogic_open_nonblock(devc))
	163	return SR_ERR;
	164
	165	/* Set fd and local attributes */
	166	devc->pollfd.fd = devc->fd;
	167	devc->pollfd.events = G_IO_IN;
89efe064	168	devc->pollfd.revents = 0;
ad9dbc1c KA	169
	170	/* Get the default attributes */
	171	beaglelogic_get_samplerate(devc);
	172	beaglelogic_get_sampleunit(devc);
	173	beaglelogic_get_triggerflags(devc);
	174	beaglelogic_get_buffersize(devc);
	175	beaglelogic_get_bufunitsize(devc);
	176
	177	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
	178	if (beaglelogic_mmap(devc) != SR_OK) {
	179	sr_err("Unable to map capture buffer");
	180	beaglelogic_close(devc);
	181	return SR_ERR;
	182	}
bb993797	183
ad9dbc1c	184	/* We're good to go now */
bb993797	185	sdi->status = SR_ST_ACTIVE;
bb993797 KA	186	return SR_OK;
	187	}
	188
	189	static int dev_close(struct sr_dev_inst *sdi)
	190	{
ad9dbc1c	191	struct dev_context *devc = sdi->priv;
bb993797	192
ad9dbc1c KA	193	if (sdi->status == SR_ST_ACTIVE) {
	194	/* Close the memory mapping and the file */
	195	beaglelogic_munmap(devc);
	196	beaglelogic_close(devc);
	197	}
bb993797	198	sdi->status = SR_ST_INACTIVE;
bb993797 KA	199	return SR_OK;
	200	}
	201
4f840ce9	202	static int cleanup(const struct sr_dev_driver *di)
bb993797	203	{
ad9dbc1c KA	204	struct drv_context *drvc;
	205	struct sr_dev_inst *sdi;
	206	GSList *l;
	207
	208	/* unused driver */
41812aca	209	if (!(drvc = di->context))
ad9dbc1c KA	210	return SR_OK;
	211
	212	/* Clean up the instances */
	213	for (l = drvc->instances; l; l = l->next) {
	214	sdi = l->data;
	215	di->dev_close(sdi);
	216	g_free(sdi->priv);
	217	sr_dev_inst_free(sdi);
	218	}
	219	g_slist_free(drvc->instances);
	220	drvc->instances = NULL;
bb993797	221
bb993797 KA	222	return SR_OK;
	223	}
	224
584560f1	225	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	226	const struct sr_channel_group *cg)
bb993797 KA	227	{
ad9dbc1c	228	struct dev_context *devc = sdi->priv;
dcd438ee	229
bb993797 KA	230	(void)cg;
bb993797 KA	231
bb993797	232	switch (key) {
ad9dbc1c KA	233	case SR_CONF_LIMIT_SAMPLES:
	234	*data = g_variant_new_uint64(devc->limit_samples);
	235	break;
ad9dbc1c KA	236	case SR_CONF_SAMPLERATE:
	237	*data = g_variant_new_uint64(devc->cur_samplerate);
	238	break;
e743a47d AJ	239	case SR_CONF_CAPTURE_RATIO:
	240	*data = g_variant_new_uint64(devc->capture_ratio);
	241	break;
ad9dbc1c KA	242	case SR_CONF_NUM_LOGIC_CHANNELS:
	243	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	244	break;
bb993797 KA	245	default:
	246	return SR_ERR_NA;
	247	}
	248
ad9dbc1c	249	return SR_OK;
bb993797 KA	250	}
bb993797 KA	251
584560f1	252	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
bb993797 KA	253	const struct sr_channel_group *cg)
bb993797 KA	254	{
ad9dbc1c KA	255	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	256	uint64_t tmp_u64;
dcd438ee	257
bb993797 KA	258	(void)cg;
	259
	260	if (sdi->status != SR_ST_ACTIVE)
	261	return SR_ERR_DEV_CLOSED;
	262
bb993797	263	switch (key) {
ad9dbc1c KA	264	case SR_CONF_SAMPLERATE:
	265	devc->cur_samplerate = g_variant_get_uint64(data);
	266	return beaglelogic_set_samplerate(devc);
ad9dbc1c KA	267	case SR_CONF_LIMIT_SAMPLES:
	268	tmp_u64 = g_variant_get_uint64(data);
	269	devc->limit_samples = tmp_u64;
	270	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	271
	272	/* Check if we have sufficient buffer size */
	273	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	274	if (tmp_u64 > devc->buffersize) {
	275	sr_warn("Insufficient buffer space has been allocated.");
	276	sr_warn("Please use \'echo <size in bytes> > "\
	277	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
	278	"\' as root to increase the buffer size, this"\
	279	" capture is now truncated to %d Msamples",
	280	devc->buffersize /
	281	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	282	}
	283	return beaglelogic_set_triggerflags(devc);
e743a47d AJ	284	case SR_CONF_CAPTURE_RATIO:
	285	devc->capture_ratio = g_variant_get_uint64(data);
	286	if (devc->capture_ratio > 100) {
	287	devc->capture_ratio = 0;
	288	return SR_ERR;
	289	}
	290	return SR_OK;
bb993797	291	default:
ad9dbc1c	292	return SR_ERR_NA;
bb993797 KA	293	}
bb993797 KA	294
ad9dbc1c	295	return SR_OK;
bb993797 KA	296	}
bb993797 KA	297
584560f1	298	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	299	const struct sr_channel_group *cg)
	300	{
	301	int ret;
ad9dbc1c KA	302	GVariant *gvar;
ad9dbc1c KA	303	GVariantBuilder gvb;
bb993797 KA	304
bb993797 KA	305	(void)sdi;
bb993797 KA	306	(void)cg;
	307
	308	ret = SR_OK;
	309	switch (key) {
138589b0 BV	310	case SR_CONF_SCAN_OPTIONS:
	311	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	312	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	313	break;
ad9dbc1c	314	case SR_CONF_DEVICE_OPTIONS:
584560f1	315	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	316	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
ad9dbc1c KA	317	break;
	318	case SR_CONF_SAMPLERATE:
	319	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	320	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	321	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	322	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	323	*data = g_variant_builder_end(&gvb);
	324	break;
	325	case SR_CONF_TRIGGER_MATCH:
af945a66	326	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
ad9dbc1c KA	327	soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
	328	sizeof(int32_t));
	329	break;
bb993797 KA	330	default:
	331	return SR_ERR_NA;
	332	}
	333
	334	return ret;
	335	}
	336
ad9dbc1c KA	337	/* get a sane timeout for poll() */
	338	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	339	(uint32_t)(devc->cur_samplerate)))
	340
bb993797 KA	341	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	342	void *cb_data)
	343	{
bb993797	344	(void)cb_data;
ad9dbc1c KA	345	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	346	struct sr_trigger *trigger;
bb993797 KA	347
	348	if (sdi->status != SR_ST_ACTIVE)
	349	return SR_ERR_DEV_CLOSED;
	350
ad9dbc1c KA	351	/* Save user pointer */
	352	devc->cb_data = cb_data;
	353
	354	/* Clear capture state */
	355	devc->bytes_read = 0;
	356	devc->offset = 0;
	357
	358	/* Configure channels */
	359	devc->sampleunit = g_slist_length(sdi->channels) > 8 ?
	360	BL_SAMPLEUNIT_16_BITS : BL_SAMPLEUNIT_8_BITS;
	361	beaglelogic_set_sampleunit(devc);
	362
	363	/* Configure triggers & send header packet */
	364	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	365	int pre_trigger_samples = 0;
	366	if (devc->limit_samples > 0)
	367	pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
	368	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
98fec29e	369	if (!devc->stl)
e743a47d	370	return SR_ERR_MALLOC;
ad9dbc1c KA	371	devc->trigger_fired = FALSE;
	372	} else
	373	devc->trigger_fired = TRUE;
	374	std_session_send_df_header(cb_data, LOG_PREFIX);
	375
	376	/* Trigger and add poll on file */
	377	beaglelogic_start(devc);
	378	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	379	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_receive_data,
	380	(void *)sdi);
bb993797 KA	381
	382	return SR_OK;
	383	}
	384
	385	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	386	{
ad9dbc1c KA	387	struct dev_context *devc = sdi->priv;
	388	struct sr_datafeed_packet pkt;
	389
bb993797 KA	390	(void)cb_data;
	391
	392	if (sdi->status != SR_ST_ACTIVE)
	393	return SR_ERR_DEV_CLOSED;
	394
ad9dbc1c KA	395	/* Execute a stop on BeagleLogic */
	396	beaglelogic_stop(devc);
	397
	398	/* lseek to offset 0, flushes the cache */
	399	lseek(devc->fd, 0, SEEK_SET);
	400
	401	/* Remove session source and send EOT packet */
	402	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	403	pkt.type = SR_DF_END;
	404	pkt.payload = NULL;
	405	sr_session_send(sdi, &pkt);
bb993797 KA	406
	407	return SR_OK;
	408	}
	409
	410	SR_PRIV struct sr_dev_driver beaglelogic_driver_info = {
	411	.name = "beaglelogic",
	412	.longname = "BeagleLogic",
	413	.api_version = 1,
	414	.init = init,
	415	.cleanup = cleanup,
	416	.scan = scan,
	417	.dev_list = dev_list,
	418	.dev_clear = dev_clear,
	419	.config_get = config_get,
	420	.config_set = config_set,
	421	.config_list = config_list,
	422	.dev_open = dev_open,
	423	.dev_close = dev_close,
	424	.dev_acquisition_start = dev_acquisition_start,
	425	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	426	.context = NULL,
bb993797	427	};