[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;
	struct sr_channel *ch;
	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++) {
		ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
				beaglelogic_channel_names[i]);
		sdi->channels = g_slist_append(sdi->channels, ch);
	}

	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;
	89	struct sr_channel *ch;
	90	int i, maxch;
bb993797 KA	91
	92	devices = NULL;
	93	drvc = di->priv;
	94	drvc->instances = NULL;
	95
ad9dbc1c KA	96	/* Probe for /dev/beaglelogic */
	97	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
	98	return NULL;
	99
aac29cc1	100	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	101	sdi->status = SR_ST_INACTIVE;
	102	sdi->model = g_strdup("BeagleLogic");
	103	sdi->version = g_strdup("1.0");
ad9dbc1c KA	104	sdi->driver = di;
	105
	106	/* Unless explicitly specified, keep max channels to 8 only */
	107	maxch = 8;
	108	for (l = options; l; l = l->next) {
	109	src = l->data;
	110	if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
	111	maxch = g_variant_get_int32(src->data);
	112	}
	113
	114	/* We need to test for number of channels by opening the node */
	115	devc = beaglelogic_devc_alloc();
	116
	117	if (beaglelogic_open_nonblock(devc) != SR_OK) {
	118	g_free(devc);
	119	sr_dev_inst_free(sdi);
	120
	121	return NULL;
	122	}
	123
	124	if (maxch > 8) {
	125	maxch = NUM_CHANNELS;
	126	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	127	} else {
	128	maxch = 8;
	129	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	130	}
	131
	132	beaglelogic_set_sampleunit(devc);
	133	beaglelogic_close(devc);
	134
	135	/* Signal */
	136	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	137
	138	/* Fill the channels */
	139	for (i = 0; i < maxch; i++) {
c368e6f3 UH	140	ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
c368e6f3 UH	141	beaglelogic_channel_names[i]);
ad9dbc1c KA	142	sdi->channels = g_slist_append(sdi->channels, ch);
	143	}
	144
	145	sdi->priv = devc;
	146	drvc->instances = g_slist_append(drvc->instances, sdi);
	147	devices = g_slist_append(devices, sdi);
bb993797 KA	148
	149	return devices;
	150	}
	151
	152	static GSList *dev_list(void)
	153	{
	154	return ((struct drv_context *)(di->priv))->instances;
	155	}
	156
	157	static int dev_clear(void)
	158	{
	159	return std_dev_clear(di, NULL);
	160	}
	161
	162	static int dev_open(struct sr_dev_inst *sdi)
	163	{
ad9dbc1c KA	164	struct dev_context *devc = sdi->priv;
	165
	166	/* Open BeagleLogic */
	167	if (beaglelogic_open_nonblock(devc))
	168	return SR_ERR;
	169
	170	/* Set fd and local attributes */
	171	devc->pollfd.fd = devc->fd;
	172	devc->pollfd.events = G_IO_IN;
	173
	174	/* Get the default attributes */
	175	beaglelogic_get_samplerate(devc);
	176	beaglelogic_get_sampleunit(devc);
	177	beaglelogic_get_triggerflags(devc);
	178	beaglelogic_get_buffersize(devc);
	179	beaglelogic_get_bufunitsize(devc);
	180
	181	/* Map the kernel capture FIFO for reads, saves 1 level of memcpy */
	182	if (beaglelogic_mmap(devc) != SR_OK) {
	183	sr_err("Unable to map capture buffer");
	184	beaglelogic_close(devc);
	185	return SR_ERR;
	186	}
bb993797	187
ad9dbc1c	188	/* We're good to go now */
bb993797	189	sdi->status = SR_ST_ACTIVE;
bb993797 KA	190	return SR_OK;
	191	}
	192
	193	static int dev_close(struct sr_dev_inst *sdi)
	194	{
ad9dbc1c	195	struct dev_context *devc = sdi->priv;
bb993797	196
ad9dbc1c KA	197	if (sdi->status == SR_ST_ACTIVE) {
	198	/* Close the memory mapping and the file */
	199	beaglelogic_munmap(devc);
	200	beaglelogic_close(devc);
	201	}
bb993797	202	sdi->status = SR_ST_INACTIVE;
bb993797 KA	203	return SR_OK;
	204	}
	205
	206	static int cleanup(void)
	207	{
ad9dbc1c KA	208	struct drv_context *drvc;
	209	struct sr_dev_inst *sdi;
	210	GSList *l;
	211
	212	/* unused driver */
	213	if (!(drvc = di->priv))
	214	return SR_OK;
	215
	216	/* Clean up the instances */
	217	for (l = drvc->instances; l; l = l->next) {
	218	sdi = l->data;
	219	di->dev_close(sdi);
	220	g_free(sdi->priv);
	221	sr_dev_inst_free(sdi);
	222	}
	223	g_slist_free(drvc->instances);
	224	drvc->instances = NULL;
bb993797	225
ad9dbc1c	226	di->priv = NULL;
bb993797 KA	227
	228	return SR_OK;
	229	}
	230
584560f1	231	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	232	const struct sr_channel_group *cg)
bb993797 KA	233	{
ad9dbc1c	234	struct dev_context *devc = sdi->priv;
bb993797 KA	235	(void)cg;
bb993797 KA	236
bb993797	237	switch (key) {
ad9dbc1c KA	238	case SR_CONF_LIMIT_SAMPLES:
	239	*data = g_variant_new_uint64(devc->limit_samples);
	240	break;
	241
	242	case SR_CONF_SAMPLERATE:
	243	*data = g_variant_new_uint64(devc->cur_samplerate);
	244	break;
	245
e743a47d AJ	246	case SR_CONF_CAPTURE_RATIO:
	247	*data = g_variant_new_uint64(devc->capture_ratio);
	248	break;
	249
ad9dbc1c KA	250	case SR_CONF_NUM_LOGIC_CHANNELS:
	251	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	252	break;
	253
bb993797 KA	254	default:
	255	return SR_ERR_NA;
	256	}
	257
ad9dbc1c	258	return SR_OK;
bb993797 KA	259	}
bb993797 KA	260
584560f1	261	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
bb993797 KA	262	const struct sr_channel_group *cg)
bb993797 KA	263	{
ad9dbc1c KA	264	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	265	uint64_t tmp_u64;
bb993797 KA	266	(void)cg;
	267
	268	if (sdi->status != SR_ST_ACTIVE)
	269	return SR_ERR_DEV_CLOSED;
	270
bb993797	271	switch (key) {
ad9dbc1c KA	272	case SR_CONF_SAMPLERATE:
	273	devc->cur_samplerate = g_variant_get_uint64(data);
	274	return beaglelogic_set_samplerate(devc);
	275
	276	case SR_CONF_LIMIT_SAMPLES:
	277	tmp_u64 = g_variant_get_uint64(data);
	278	devc->limit_samples = tmp_u64;
	279	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	280
	281	/* Check if we have sufficient buffer size */
	282	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	283	if (tmp_u64 > devc->buffersize) {
	284	sr_warn("Insufficient buffer space has been allocated.");
	285	sr_warn("Please use \'echo <size in bytes> > "\
	286	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
	287	"\' as root to increase the buffer size, this"\
	288	" capture is now truncated to %d Msamples",
	289	devc->buffersize /
	290	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	291	}
	292	return beaglelogic_set_triggerflags(devc);
	293
e743a47d AJ	294	case SR_CONF_CAPTURE_RATIO:
	295	devc->capture_ratio = g_variant_get_uint64(data);
	296	if (devc->capture_ratio > 100) {
	297	devc->capture_ratio = 0;
	298	return SR_ERR;
	299	}
	300	return SR_OK;
	301
bb993797	302	default:
ad9dbc1c	303	return SR_ERR_NA;
bb993797 KA	304	}
bb993797 KA	305
ad9dbc1c	306	return SR_OK;
bb993797 KA	307	}
bb993797 KA	308
584560f1	309	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	310	const struct sr_channel_group *cg)
	311	{
	312	int ret;
ad9dbc1c KA	313	GVariant *gvar;
ad9dbc1c KA	314	GVariantBuilder gvb;
bb993797 KA	315
	316	(void)sdi;
	317	(void)data;
	318	(void)cg;
	319
	320	ret = SR_OK;
	321	switch (key) {
138589b0 BV	322	case SR_CONF_SCAN_OPTIONS:
	323	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	324	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	325	break;
ad9dbc1c	326	case SR_CONF_DEVICE_OPTIONS:
584560f1	327	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	328	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
ad9dbc1c KA	329	break;
	330	case SR_CONF_SAMPLERATE:
	331	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	332	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	333	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	334	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	335	*data = g_variant_builder_end(&gvb);
	336	break;
	337	case SR_CONF_TRIGGER_MATCH:
af945a66	338	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
ad9dbc1c KA	339	soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
	340	sizeof(int32_t));
	341	break;
bb993797 KA	342	default:
	343	return SR_ERR_NA;
	344	}
	345
	346	return ret;
	347	}
	348
ad9dbc1c KA	349	/* get a sane timeout for poll() */
	350	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	351	(uint32_t)(devc->cur_samplerate)))
	352
bb993797 KA	353	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	354	void *cb_data)
	355	{
bb993797	356	(void)cb_data;
ad9dbc1c KA	357	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	358	struct sr_trigger *trigger;
bb993797 KA	359
	360	if (sdi->status != SR_ST_ACTIVE)
	361	return SR_ERR_DEV_CLOSED;
	362
ad9dbc1c KA	363	/* Save user pointer */
	364	devc->cb_data = cb_data;
	365
	366	/* Clear capture state */
	367	devc->bytes_read = 0;
	368	devc->offset = 0;
	369
	370	/* Configure channels */
	371	devc->sampleunit = g_slist_length(sdi->channels) > 8 ?
	372	BL_SAMPLEUNIT_16_BITS : BL_SAMPLEUNIT_8_BITS;
	373	beaglelogic_set_sampleunit(devc);
	374
	375	/* Configure triggers & send header packet */
	376	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	377	int pre_trigger_samples = 0;
	378	if (devc->limit_samples > 0)
	379	pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
	380	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
	381	if (devc->stl == NULL)
	382	return SR_ERR_MALLOC;
ad9dbc1c KA	383	devc->trigger_fired = FALSE;
	384	} else
	385	devc->trigger_fired = TRUE;
	386	std_session_send_df_header(cb_data, LOG_PREFIX);
	387
	388	/* Trigger and add poll on file */
	389	beaglelogic_start(devc);
	390	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	391	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_receive_data,
	392	(void *)sdi);
bb993797 KA	393
	394	return SR_OK;
	395	}
	396
	397	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	398	{
ad9dbc1c KA	399	struct dev_context *devc = sdi->priv;
	400	struct sr_datafeed_packet pkt;
	401
bb993797 KA	402	(void)cb_data;
	403
	404	if (sdi->status != SR_ST_ACTIVE)
	405	return SR_ERR_DEV_CLOSED;
	406
ad9dbc1c KA	407	/* Execute a stop on BeagleLogic */
	408	beaglelogic_stop(devc);
	409
	410	/* lseek to offset 0, flushes the cache */
	411	lseek(devc->fd, 0, SEEK_SET);
	412
	413	/* Remove session source and send EOT packet */
	414	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	415	pkt.type = SR_DF_END;
	416	pkt.payload = NULL;
	417	sr_session_send(sdi, &pkt);
bb993797 KA	418
	419	return SR_OK;
	420	}
	421
	422	SR_PRIV struct sr_dev_driver beaglelogic_driver_info = {
	423	.name = "beaglelogic",
	424	.longname = "BeagleLogic",
	425	.api_version = 1,
	426	.init = init,
	427	.cleanup = cleanup,
	428	.scan = scan,
	429	.dev_list = dev_list,
	430	.dev_clear = dev_clear,
	431	.config_get = config_get,
	432	.config_set = config_set,
	433	.config_list = config_list,
	434	.dev_open = dev_open,
	435	.dev_close = dev_close,
	436	.dev_acquisition_start = dev_acquisition_start,
	437	.dev_acquisition_stop = dev_acquisition_stop,
	438	.priv = NULL,
	439	};