[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,
};

/* Channels are numbered 0-13 */
SR_PRIV const char *beaglelogic_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", 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_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->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(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)
{
	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(const struct sr_dev_driver *di)
{
	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;

	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
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
	50	/* Channels are numbered 0-13 */
53cda65a	51	SR_PRIV const char *beaglelogic_channel_names[] = {
ad9dbc1c KA	52	"P8_45", "P8_46", "P8_43", "P8_44", "P8_41", "P8_42", "P8_39", "P8_40",
	53	"P8_27", "P8_29", "P8_28", "P8_30", "P8_21", "P8_20", NULL,
	54	};
	55
	56	/* Possible sample rates : 10 Hz to 100 MHz = (100 / x) MHz */
	57	static const uint64_t samplerates[] = {
138589b0 BV	58	SR_HZ(10),
	59	SR_MHZ(100),
	60	SR_HZ(1),
ad9dbc1c KA	61	};
ad9dbc1c KA	62
4f840ce9	63	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
bb993797 KA	64	{
	65	return std_init(sr_ctx, di, LOG_PREFIX);
	66	}
	67
f57d8ffe	68	static struct dev_context *beaglelogic_devc_alloc(void)
ad9dbc1c KA	69	{
	70	struct dev_context *devc;
	71
f57d8ffe	72	devc = g_malloc0(sizeof(struct dev_context));
ad9dbc1c KA	73
	74	/* Default non-zero values (if any) */
	75	devc->fd = -1;
	76	devc->limit_samples = (uint64_t)-1;
	77
	78	return devc;
	79	}
	80
4f840ce9	81	static GSList scan(struct sr_dev_driver di, GSList *options)
bb993797 KA	82	{
bb993797 KA	83	struct drv_context *drvc;
ad9dbc1c KA	84	GSList devices, l;
	85	struct sr_config *src;
	86	struct sr_dev_inst *sdi;
	87	struct dev_context *devc;
ad9dbc1c	88	int i, maxch;
bb993797 KA	89
	90	devices = NULL;
	91	drvc = di->priv;
	92	drvc->instances = NULL;
	93
ad9dbc1c KA	94	/* Probe for /dev/beaglelogic */
	95	if (!g_file_test(BEAGLELOGIC_DEV_NODE, G_FILE_TEST_EXISTS))
	96	return NULL;
	97
aac29cc1	98	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	99	sdi->status = SR_ST_INACTIVE;
	100	sdi->model = g_strdup("BeagleLogic");
	101	sdi->version = g_strdup("1.0");
ad9dbc1c KA	102	sdi->driver = di;
	103
	104	/* Unless explicitly specified, keep max channels to 8 only */
	105	maxch = 8;
	106	for (l = options; l; l = l->next) {
	107	src = l->data;
	108	if (src->key == SR_CONF_NUM_LOGIC_CHANNELS)
	109	maxch = g_variant_get_int32(src->data);
	110	}
	111
	112	/* We need to test for number of channels by opening the node */
	113	devc = beaglelogic_devc_alloc();
	114
	115	if (beaglelogic_open_nonblock(devc) != SR_OK) {
	116	g_free(devc);
	117	sr_dev_inst_free(sdi);
	118
	119	return NULL;
	120	}
	121
	122	if (maxch > 8) {
	123	maxch = NUM_CHANNELS;
	124	devc->sampleunit = BL_SAMPLEUNIT_16_BITS;
	125	} else {
	126	maxch = 8;
	127	devc->sampleunit = BL_SAMPLEUNIT_8_BITS;
	128	}
	129
	130	beaglelogic_set_sampleunit(devc);
	131	beaglelogic_close(devc);
	132
	133	/* Signal */
	134	sr_info("BeagleLogic device found at "BEAGLELOGIC_DEV_NODE);
	135
	136	/* Fill the channels */
5e23fcab ML	137	for (i = 0; i < maxch; i++)
5e23fcab ML	138	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
c368e6f3	139	beaglelogic_channel_names[i]);
ad9dbc1c KA	140
	141	sdi->priv = devc;
	142	drvc->instances = g_slist_append(drvc->instances, sdi);
	143	devices = g_slist_append(devices, sdi);
bb993797 KA	144
	145	return devices;
	146	}
	147
4f840ce9	148	static GSList dev_list(const struct sr_dev_driver di)
bb993797 KA	149	{
	150	return ((struct drv_context *)(di->priv))->instances;
	151	}
	152
4f840ce9	153	static int dev_clear(const struct sr_dev_driver *di)
bb993797 KA	154	{
	155	return std_dev_clear(di, NULL);
	156	}
	157
	158	static int dev_open(struct sr_dev_inst *sdi)
	159	{
ad9dbc1c KA	160	struct dev_context *devc = sdi->priv;
	161
	162	/* Open BeagleLogic */
	163	if (beaglelogic_open_nonblock(devc))
	164	return SR_ERR;
	165
	166	/* Set fd and local attributes */
	167	devc->pollfd.fd = devc->fd;
	168	devc->pollfd.events = G_IO_IN;
	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 */
	209	if (!(drvc = di->priv))
	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;
bb993797 KA	229	(void)cg;
bb993797 KA	230
bb993797	231	switch (key) {
ad9dbc1c KA	232	case SR_CONF_LIMIT_SAMPLES:
	233	*data = g_variant_new_uint64(devc->limit_samples);
	234	break;
	235
	236	case SR_CONF_SAMPLERATE:
	237	*data = g_variant_new_uint64(devc->cur_samplerate);
	238	break;
	239
e743a47d AJ	240	case SR_CONF_CAPTURE_RATIO:
	241	*data = g_variant_new_uint64(devc->capture_ratio);
	242	break;
	243
ad9dbc1c KA	244	case SR_CONF_NUM_LOGIC_CHANNELS:
	245	*data = g_variant_new_uint32(g_slist_length(sdi->channels));
	246	break;
	247
bb993797 KA	248	default:
	249	return SR_ERR_NA;
	250	}
	251
ad9dbc1c	252	return SR_OK;
bb993797 KA	253	}
bb993797 KA	254
584560f1	255	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
bb993797 KA	256	const struct sr_channel_group *cg)
bb993797 KA	257	{
ad9dbc1c KA	258	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	259	uint64_t tmp_u64;
bb993797 KA	260	(void)cg;
	261
	262	if (sdi->status != SR_ST_ACTIVE)
	263	return SR_ERR_DEV_CLOSED;
	264
bb993797	265	switch (key) {
ad9dbc1c KA	266	case SR_CONF_SAMPLERATE:
	267	devc->cur_samplerate = g_variant_get_uint64(data);
	268	return beaglelogic_set_samplerate(devc);
	269
	270	case SR_CONF_LIMIT_SAMPLES:
	271	tmp_u64 = g_variant_get_uint64(data);
	272	devc->limit_samples = tmp_u64;
	273	devc->triggerflags = BL_TRIGGERFLAGS_ONESHOT;
	274
	275	/* Check if we have sufficient buffer size */
	276	tmp_u64 *= SAMPLEUNIT_TO_BYTES(devc->sampleunit);
	277	if (tmp_u64 > devc->buffersize) {
	278	sr_warn("Insufficient buffer space has been allocated.");
	279	sr_warn("Please use \'echo <size in bytes> > "\
	280	BEAGLELOGIC_SYSFS_ATTR(memalloc) \
	281	"\' as root to increase the buffer size, this"\
	282	" capture is now truncated to %d Msamples",
	283	devc->buffersize /
	284	(SAMPLEUNIT_TO_BYTES(devc->sampleunit) * 1000000));
	285	}
	286	return beaglelogic_set_triggerflags(devc);
	287
e743a47d AJ	288	case SR_CONF_CAPTURE_RATIO:
	289	devc->capture_ratio = g_variant_get_uint64(data);
	290	if (devc->capture_ratio > 100) {
	291	devc->capture_ratio = 0;
	292	return SR_ERR;
	293	}
	294	return SR_OK;
	295
bb993797	296	default:
ad9dbc1c	297	return SR_ERR_NA;
bb993797 KA	298	}
bb993797 KA	299
ad9dbc1c	300	return SR_OK;
bb993797 KA	301	}
bb993797 KA	302
584560f1	303	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
bb993797 KA	304	const struct sr_channel_group *cg)
	305	{
	306	int ret;
ad9dbc1c KA	307	GVariant *gvar;
ad9dbc1c KA	308	GVariantBuilder gvb;
bb993797 KA	309
	310	(void)sdi;
	311	(void)data;
	312	(void)cg;
	313
	314	ret = SR_OK;
	315	switch (key) {
138589b0 BV	316	case SR_CONF_SCAN_OPTIONS:
	317	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	318	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	319	break;
ad9dbc1c	320	case SR_CONF_DEVICE_OPTIONS:
584560f1	321	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	322	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
ad9dbc1c KA	323	break;
	324	case SR_CONF_SAMPLERATE:
	325	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	326	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	327	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	328	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	329	*data = g_variant_builder_end(&gvb);
	330	break;
	331	case SR_CONF_TRIGGER_MATCH:
af945a66	332	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
ad9dbc1c KA	333	soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
	334	sizeof(int32_t));
	335	break;
bb993797 KA	336	default:
	337	return SR_ERR_NA;
	338	}
	339
	340	return ret;
	341	}
	342
ad9dbc1c KA	343	/* get a sane timeout for poll() */
	344	#define BUFUNIT_TIMEOUT_MS(devc) (100 + ((devc->bufunitsize * 1000) / \
	345	(uint32_t)(devc->cur_samplerate)))
	346
bb993797 KA	347	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	348	void *cb_data)
	349	{
bb993797	350	(void)cb_data;
ad9dbc1c KA	351	struct dev_context *devc = sdi->priv;
ad9dbc1c KA	352	struct sr_trigger *trigger;
bb993797 KA	353
	354	if (sdi->status != SR_ST_ACTIVE)
	355	return SR_ERR_DEV_CLOSED;
	356
ad9dbc1c KA	357	/* Save user pointer */
	358	devc->cb_data = cb_data;
	359
	360	/* Clear capture state */
	361	devc->bytes_read = 0;
	362	devc->offset = 0;
	363
	364	/* Configure channels */
	365	devc->sampleunit = g_slist_length(sdi->channels) > 8 ?
	366	BL_SAMPLEUNIT_16_BITS : BL_SAMPLEUNIT_8_BITS;
	367	beaglelogic_set_sampleunit(devc);
	368
	369	/* Configure triggers & send header packet */
	370	if ((trigger = sr_session_trigger_get(sdi->session))) {
e743a47d AJ	371	int pre_trigger_samples = 0;
	372	if (devc->limit_samples > 0)
	373	pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
	374	devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
	375	if (devc->stl == NULL)
	376	return SR_ERR_MALLOC;
ad9dbc1c KA	377	devc->trigger_fired = FALSE;
	378	} else
	379	devc->trigger_fired = TRUE;
	380	std_session_send_df_header(cb_data, LOG_PREFIX);
	381
	382	/* Trigger and add poll on file */
	383	beaglelogic_start(devc);
	384	sr_session_source_add_pollfd(sdi->session, &devc->pollfd,
	385	BUFUNIT_TIMEOUT_MS(devc), beaglelogic_receive_data,
	386	(void *)sdi);
bb993797 KA	387
	388	return SR_OK;
	389	}
	390
	391	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	392	{
ad9dbc1c KA	393	struct dev_context *devc = sdi->priv;
	394	struct sr_datafeed_packet pkt;
	395
bb993797 KA	396	(void)cb_data;
	397
	398	if (sdi->status != SR_ST_ACTIVE)
	399	return SR_ERR_DEV_CLOSED;
	400
ad9dbc1c KA	401	/* Execute a stop on BeagleLogic */
	402	beaglelogic_stop(devc);
	403
	404	/* lseek to offset 0, flushes the cache */
	405	lseek(devc->fd, 0, SEEK_SET);
	406
	407	/* Remove session source and send EOT packet */
	408	sr_session_source_remove_pollfd(sdi->session, &devc->pollfd);
	409	pkt.type = SR_DF_END;
	410	pkt.payload = NULL;
	411	sr_session_send(sdi, &pkt);
bb993797 KA	412
	413	return SR_OK;
	414	}
	415
	416	SR_PRIV struct sr_dev_driver beaglelogic_driver_info = {
	417	.name = "beaglelogic",
	418	.longname = "BeagleLogic",
	419	.api_version = 1,
	420	.init = init,
	421	.cleanup = cleanup,
	422	.scan = scan,
	423	.dev_list = dev_list,
	424	.dev_clear = dev_clear,
	425	.config_get = config_get,
	426	.config_set = config_set,
	427	.config_list = config_list,
	428	.dev_open = dev_open,
	429	.dev_close = dev_close,
	430	.dev_acquisition_start = dev_acquisition_start,
	431	.dev_acquisition_stop = dev_acquisition_stop,
	432	.priv = NULL,
	433	};