[libsigrok.git] / hardware / sysclk-lwla / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "protocol.h"
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include <glib.h>
#include <libusb.h>
#include <stdlib.h>
#include <string.h>

static const int32_t hwcaps[] = {
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_SAMPLERATE,
	SR_CONF_EXTERNAL_CLOCK,
	SR_CONF_TRIGGER_TYPE,
	SR_CONF_LIMIT_SAMPLES,
};

/* The hardware supports more samplerates than these, but these are the
 * options hardcoded into the vendor's Windows GUI.
 */
static const uint64_t samplerates[] = {
	SR_MHZ(125), SR_MHZ(100),
	SR_MHZ(50),  SR_MHZ(20),  SR_MHZ(10),
	SR_MHZ(5),   SR_MHZ(2),   SR_MHZ(1),
	SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
	SR_KHZ(50),  SR_KHZ(20),  SR_KHZ(10),
	SR_KHZ(5),   SR_KHZ(2),   SR_KHZ(1),
	SR_HZ(500),  SR_HZ(200),  SR_HZ(100),
};

SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;

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

static GSList *gen_probe_list(int num_probes)
{
	GSList *list;
	struct sr_probe *probe;
	int i;
	char name[8];

	list = NULL;

	for (i = num_probes; i > 0; --i) {
		/* The LWLA series simply number probes from CH1 to CHxx. */
		g_ascii_formatd(name, sizeof name, "CH%.0f", i);

		probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
		list = g_slist_prepend(list, probe);
	}

	return list;
}

static GSList *scan(GSList *options)
{
	GSList *usb_devices, *devices, *node;
	struct drv_context *drvc;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	int device_index;

	(void)options;

	devices = NULL;
	drvc = di->priv;
	drvc->instances = NULL;
	device_index = 0;

	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);

	for (node = usb_devices; node != NULL; node = node->next) {
		usb = node->data;

		/* Allocate memory for our private driver context. */
		devc = g_try_new0(struct dev_context, 1);
		if (!devc) {
			sr_err("Device context malloc failed.");
			sr_usb_dev_inst_free(usb);
			continue;
		}
		/* Register the device with libsigrok. */
		sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
				      VENDOR_NAME, MODEL_NAME, NULL);
		if (!sdi) {
			sr_err("Failed to instantiate device.");
			g_free(devc);
			sr_usb_dev_inst_free(usb);
			continue;
		}
		sdi->driver = di;
		sdi->priv = devc;
		sdi->inst_type = SR_INST_USB;
		sdi->conn = usb;
		sdi->probes = gen_probe_list(NUM_PROBES);

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

	g_slist_free(usb_devices);

	return devices;
}

static GSList *dev_list(void)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->instances;
}

static void clear_dev_context(void *priv)
{
	struct dev_context *devc;

	devc = priv;

	sr_dbg("Device context cleared.");

	lwla_free_acquisition_state(devc->acquisition);
	g_free(devc);
}

static int dev_clear(void)
{
	return std_dev_clear(di, &clear_dev_context);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	int ret;

	drvc = di->priv;

	if (!drvc) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	usb  = sdi->conn;
	devc = sdi->priv;

	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	if (ret != SR_OK)
		return ret;

	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	if (ret < 0) {
		sr_err("Failed to claim interface: %s.",
			libusb_error_name(ret));
		return SR_ERR;
	}

	sdi->status = SR_ST_INITIALIZING;

	if (devc->samplerate == 0)
		/* Apply default if the samplerate hasn't been set yet. */
		devc->samplerate = DEFAULT_SAMPLERATE;

	ret = lwla_init_device(sdi);

	if (ret == SR_OK)
		sdi->status = SR_ST_ACTIVE;

	return ret;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb;
	struct dev_context *devc;

	if (!di->priv) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	usb  = sdi->conn;
	devc = sdi->priv;

	if (!usb->devhdl)
		return SR_OK;

	/* Trigger download of the shutdown bitstream. */
	devc->selected_clock_source = CLOCK_SOURCE_NONE;

	if (lwla_set_clock_source(sdi) != SR_OK)
		sr_err("Unable to shut down device.");

	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	libusb_close(usb->devhdl);

	usb->devhdl = NULL;
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(void)
{
	return dev_clear();
}

static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
		      const struct sr_probe_group *probe_group)
{
	struct dev_context *devc;

	(void)probe_group;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->samplerate);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_EXTERNAL_CLOCK:
		*data = g_variant_new_boolean(devc->selected_clock_source
						>= CLOCK_SOURCE_EXT_RISE);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
		      const struct sr_probe_group *probe_group)
{
	struct dev_context *devc;
	uint64_t rate;

	(void)probe_group;

	devc = sdi->priv;
	if (!devc)
		return SR_ERR_DEV_CLOSED;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		rate = g_variant_get_uint64(data);
		sr_info("Setting samplerate %" G_GUINT64_FORMAT, rate);
		if (rate > samplerates[0]
		    || rate < samplerates[G_N_ELEMENTS(samplerates) - 1])
			return SR_ERR_SAMPLERATE;
		devc->samplerate = rate;
		break;
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_samples = g_variant_get_uint64(data);
		break;
	case SR_CONF_EXTERNAL_CLOCK:
		if (g_variant_get_boolean(data)) {
			sr_info("Enabling external clock.");
			/* TODO: Allow the external clock to be inverted */
			devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
		} else {
			sr_info("Disabling external clock.");
			devc->selected_clock_source = CLOCK_SOURCE_INT;
		}
		if (sdi->status == SR_ST_ACTIVE)
			return lwla_set_clock_source(sdi);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
		       const struct sr_probe_group *probe_group)
{
	GVariant *gvar;
	GVariantBuilder gvb;

	(void)sdi;
	(void)probe_group;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_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}", "samplerates", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TRIGGER_TYPE:
		*data = g_variant_new_string(TRIGGER_TYPES);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int configure_probes(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	const struct sr_probe *probe;
	const GSList *node;
	uint64_t probe_bit;

	devc = sdi->priv;

	devc->channel_mask = 0;
	devc->trigger_mask = 0;
	devc->trigger_edge_mask = 0;
	devc->trigger_values = 0;

	for (node = sdi->probes, probe_bit = 1;
			node != NULL;
			node = node->next, probe_bit <<= 1) {

		if (probe_bit >= ((uint64_t)1 << NUM_PROBES)) {
			sr_err("Channels over the limit of %d.", NUM_PROBES);
			return SR_ERR;
		}
		probe = node->data;
		if (!probe || !probe->enabled)
			continue;

		/* Enable input channel for this probe. */
		devc->channel_mask |= probe_bit;

		if (!probe->trigger || probe->trigger[0] == '\0')
			continue;

		if (probe->trigger[1] != '\0') {
			sr_err("Only one trigger stage is supported.");
			return SR_ERR;
		}
		/* Enable trigger for this probe. */
		devc->trigger_mask |= probe_bit;

		/* Configure edge mask and trigger value. */
		switch (probe->trigger[0]) {
		case '1': devc->trigger_values |= probe_bit;
		case '0': break;

		case 'r': devc->trigger_values |= probe_bit;
		case 'f': devc->trigger_edge_mask |= probe_bit;
			  break;
		default:
			sr_err("Trigger type '%c' is not supported.",
			       probe->trigger[0]);
			return SR_ERR;
		}
	}
	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct acquisition_state *acq;
	int ret;

	(void)cb_data;

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

	devc = sdi->priv;
	drvc = di->priv;

	if (devc->acquisition) {
		sr_err("Acquisition still in progress?");
		return SR_ERR;
	}
	acq = lwla_alloc_acquisition_state();
	if (!acq)
		return SR_ERR_MALLOC;

	devc->stopping_in_progress = FALSE;
	devc->transfer_error = FALSE;

	ret = configure_probes(sdi);
	if (ret != SR_OK) {
		sr_err("Failed to configure probes.");
		lwla_free_acquisition_state(acq);
		return ret;
	}

	sr_info("Starting acquisition.");

	devc->acquisition = acq;
	ret = lwla_setup_acquisition(sdi);
	if (ret != SR_OK) {
		sr_err("Failed to set up aquisition.");
		devc->acquisition = NULL;
		lwla_free_acquisition_state(acq);
		return ret;
	}

	ret = lwla_start_acquisition(sdi);
	if (ret != SR_OK) {
		sr_err("Failed to start aquisition.");
		devc->acquisition = NULL;
		lwla_free_acquisition_state(acq);
		return ret;
	}
	usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
		       (struct sr_dev_inst *)sdi);

	sr_info("Waiting for data.");

	/* Send header packet to the session bus. */
	std_session_send_df_header(sdi, LOG_PREFIX);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	(void)cb_data;

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

	sr_dbg("Stopping acquisition.");

	sdi->status = SR_ST_STOPPING;

	return SR_OK;
}

SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
	.name = "sysclk-lwla",
	.longname = "SysClk LWLA series",
	.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
aeaad0b0 DE	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 Daniel Elstner <daniel.kitta@gmail.com>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include "protocol.h"
5874e88d DE	21	#include "libsigrok.h"
	22	#include "libsigrok-internal.h"
	23	#include <glib.h>
	24	#include <libusb.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27
	28	static const int32_t hwcaps[] = {
	29	SR_CONF_LOGIC_ANALYZER,
	30	SR_CONF_SAMPLERATE,
	31	SR_CONF_EXTERNAL_CLOCK,
	32	SR_CONF_TRIGGER_TYPE,
	33	SR_CONF_LIMIT_SAMPLES,
	34	};
	35
	36	/* The hardware supports more samplerates than these, but these are the
	37	* options hardcoded into the vendor's Windows GUI.
	38	*/
	39	static const uint64_t samplerates[] = {
	40	SR_MHZ(125), SR_MHZ(100),
	41	SR_MHZ(50), SR_MHZ(20), SR_MHZ(10),
	42	SR_MHZ(5), SR_MHZ(2), SR_MHZ(1),
	43	SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
	44	SR_KHZ(50), SR_KHZ(20), SR_KHZ(10),
	45	SR_KHZ(5), SR_KHZ(2), SR_KHZ(1),
	46	SR_HZ(500), SR_HZ(200), SR_HZ(100),
	47	};
aeaad0b0 DE	48
aeaad0b0 DE	49	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
5874e88d	50	static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;
aeaad0b0 DE	51
	52	static int init(struct sr_context *sr_ctx)
	53	{
	54	return std_init(sr_ctx, di, LOG_PREFIX);
	55	}
	56
5874e88d DE	57	static GSList *gen_probe_list(int num_probes)
	58	{
	59	GSList *list;
	60	struct sr_probe *probe;
	61	int i;
	62	char name[8];
	63
	64	list = NULL;
	65
	66	for (i = num_probes; i > 0; --i) {
	67	/* The LWLA series simply number probes from CH1 to CHxx. */
	68	g_ascii_formatd(name, sizeof name, "CH%.0f", i);
	69
	70	probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
	71	list = g_slist_prepend(list, probe);
	72	}
	73
	74	return list;
	75	}
	76
aeaad0b0 DE	77	static GSList scan(GSList options)
aeaad0b0 DE	78	{
5874e88d	79	GSList usb_devices, devices, *node;
aeaad0b0	80	struct drv_context *drvc;
5874e88d DE	81	struct sr_dev_inst *sdi;
	82	struct dev_context *devc;
	83	struct sr_usb_dev_inst *usb;
	84	int device_index;
aeaad0b0 DE	85
	86	(void)options;
	87
	88	devices = NULL;
	89	drvc = di->priv;
	90	drvc->instances = NULL;
5874e88d DE	91	device_index = 0;
	92
	93	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
	94
	95	for (node = usb_devices; node != NULL; node = node->next) {
	96	usb = node->data;
	97
	98	/* Allocate memory for our private driver context. */
	99	devc = g_try_new0(struct dev_context, 1);
	100	if (!devc) {
	101	sr_err("Device context malloc failed.");
	102	sr_usb_dev_inst_free(usb);
	103	continue;
	104	}
	105	/* Register the device with libsigrok. */
	106	sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
	107	VENDOR_NAME, MODEL_NAME, NULL);
	108	if (!sdi) {
	109	sr_err("Failed to instantiate device.");
	110	g_free(devc);
	111	sr_usb_dev_inst_free(usb);
	112	continue;
	113	}
	114	sdi->driver = di;
	115	sdi->priv = devc;
	116	sdi->inst_type = SR_INST_USB;
	117	sdi->conn = usb;
	118	sdi->probes = gen_probe_list(NUM_PROBES);
	119
	120	drvc->instances = g_slist_append(drvc->instances, sdi);
	121	devices = g_slist_append(devices, sdi);
	122	}
aeaad0b0	123
5874e88d	124	g_slist_free(usb_devices);
aeaad0b0 DE	125
	126	return devices;
	127	}
	128
	129	static GSList *dev_list(void)
	130	{
5874e88d DE	131	struct drv_context *drvc;
	132
	133	drvc = di->priv;
	134
	135	return drvc->instances;
	136	}
	137
	138	static void clear_dev_context(void *priv)
	139	{
	140	struct dev_context *devc;
	141
	142	devc = priv;
	143
	144	sr_dbg("Device context cleared.");
	145
	146	lwla_free_acquisition_state(devc->acquisition);
	147	g_free(devc);
aeaad0b0 DE	148	}
	149
	150	static int dev_clear(void)
	151	{
5874e88d	152	return std_dev_clear(di, &clear_dev_context);
aeaad0b0 DE	153	}
	154
	155	static int dev_open(struct sr_dev_inst *sdi)
	156	{
5874e88d DE	157	struct drv_context *drvc;
	158	struct dev_context *devc;
	159	struct sr_usb_dev_inst *usb;
	160	int ret;
aeaad0b0	161
5874e88d	162	drvc = di->priv;
aeaad0b0	163
5874e88d DE	164	if (!drvc) {
	165	sr_err("Driver was not initialized.");
	166	return SR_ERR;
	167	}
aeaad0b0	168
5874e88d DE	169	usb = sdi->conn;
	170	devc = sdi->priv;
	171
	172	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	173	if (ret != SR_OK)
	174	return ret;
	175
	176	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	177	if (ret < 0) {
	178	sr_err("Failed to claim interface: %s.",
	179	libusb_error_name(ret));
	180	return SR_ERR;
	181	}
	182
	183	sdi->status = SR_ST_INITIALIZING;
	184
	185	if (devc->samplerate == 0)
	186	/* Apply default if the samplerate hasn't been set yet. */
	187	devc->samplerate = DEFAULT_SAMPLERATE;
	188
	189	ret = lwla_init_device(sdi);
	190
	191	if (ret == SR_OK)
	192	sdi->status = SR_ST_ACTIVE;
	193
	194	return ret;
aeaad0b0 DE	195	}
	196
	197	static int dev_close(struct sr_dev_inst *sdi)
	198	{
5874e88d DE	199	struct sr_usb_dev_inst *usb;
	200	struct dev_context *devc;
	201
	202	if (!di->priv) {
	203	sr_err("Driver was not initialized.");
	204	return SR_ERR;
	205	}
	206
	207	usb = sdi->conn;
	208	devc = sdi->priv;
aeaad0b0	209
5874e88d DE	210	if (!usb->devhdl)
5874e88d DE	211	return SR_OK;
aeaad0b0	212
5874e88d DE	213	/* Trigger download of the shutdown bitstream. */
	214	devc->selected_clock_source = CLOCK_SOURCE_NONE;
	215
	216	if (lwla_set_clock_source(sdi) != SR_OK)
	217	sr_err("Unable to shut down device.");
	218
	219	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	220	libusb_close(usb->devhdl);
	221
	222	usb->devhdl = NULL;
aeaad0b0 DE	223	sdi->status = SR_ST_INACTIVE;
	224
	225	return SR_OK;
	226	}
	227
	228	static int cleanup(void)
	229	{
5874e88d	230	return dev_clear();
aeaad0b0 DE	231	}
	232
	233	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	234	const struct sr_probe_group *probe_group)
aeaad0b0	235	{
5874e88d	236	struct dev_context *devc;
aeaad0b0	237
aeaad0b0 DE	238	(void)probe_group;
aeaad0b0 DE	239
5874e88d DE	240	if (!sdi)
	241	return SR_ERR_ARG;
	242
	243	devc = sdi->priv;
	244
aeaad0b0	245	switch (key) {
5874e88d DE	246	case SR_CONF_SAMPLERATE:
	247	*data = g_variant_new_uint64(devc->samplerate);
	248	break;
	249	case SR_CONF_LIMIT_SAMPLES:
	250	*data = g_variant_new_uint64(devc->limit_samples);
	251	break;
	252	case SR_CONF_EXTERNAL_CLOCK:
	253	*data = g_variant_new_boolean(devc->selected_clock_source
	254	>= CLOCK_SOURCE_EXT_RISE);
	255	break;
aeaad0b0 DE	256	default:
	257	return SR_ERR_NA;
	258	}
	259
5874e88d	260	return SR_OK;
aeaad0b0 DE	261	}
	262
	263	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
5874e88d	264	const struct sr_probe_group *probe_group)
aeaad0b0	265	{
5874e88d DE	266	struct dev_context *devc;
5874e88d DE	267	uint64_t rate;
aeaad0b0	268
aeaad0b0 DE	269	(void)probe_group;
aeaad0b0 DE	270
5874e88d DE	271	devc = sdi->priv;
5874e88d DE	272	if (!devc)
aeaad0b0 DE	273	return SR_ERR_DEV_CLOSED;
aeaad0b0 DE	274
aeaad0b0	275	switch (key) {
5874e88d DE	276	case SR_CONF_SAMPLERATE:
	277	rate = g_variant_get_uint64(data);
	278	sr_info("Setting samplerate %" G_GUINT64_FORMAT, rate);
	279	if (rate > samplerates[0]
	280	\|\| rate < samplerates[G_N_ELEMENTS(samplerates) - 1])
	281	return SR_ERR_SAMPLERATE;
	282	devc->samplerate = rate;
	283	break;
	284	case SR_CONF_LIMIT_SAMPLES:
	285	devc->limit_samples = g_variant_get_uint64(data);
	286	break;
	287	case SR_CONF_EXTERNAL_CLOCK:
	288	if (g_variant_get_boolean(data)) {
	289	sr_info("Enabling external clock.");
	290	/* TODO: Allow the external clock to be inverted */
	291	devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
	292	} else {
	293	sr_info("Disabling external clock.");
	294	devc->selected_clock_source = CLOCK_SOURCE_INT;
	295	}
	296	if (sdi->status == SR_ST_ACTIVE)
	297	return lwla_set_clock_source(sdi);
	298	break;
aeaad0b0	299	default:
5874e88d	300	return SR_ERR_NA;
aeaad0b0 DE	301	}
aeaad0b0 DE	302
5874e88d	303	return SR_OK;
aeaad0b0 DE	304	}
	305
	306	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	307	const struct sr_probe_group *probe_group)
aeaad0b0	308	{
5874e88d DE	309	GVariant *gvar;
5874e88d DE	310	GVariantBuilder gvb;
aeaad0b0 DE	311
aeaad0b0 DE	312	(void)sdi;
aeaad0b0 DE	313	(void)probe_group;
aeaad0b0 DE	314
aeaad0b0	315	switch (key) {
5874e88d DE	316	case SR_CONF_DEVICE_OPTIONS:
	317	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	318	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	319	break;
	320	case SR_CONF_SAMPLERATE:
	321	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	322	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	323	samplerates, ARRAY_SIZE(samplerates),
	324	sizeof(uint64_t));
	325	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	326	*data = g_variant_builder_end(&gvb);
	327	break;
	328	case SR_CONF_TRIGGER_TYPE:
	329	*data = g_variant_new_string(TRIGGER_TYPES);
	330	break;
aeaad0b0 DE	331	default:
	332	return SR_ERR_NA;
	333	}
	334
5874e88d	335	return SR_OK;
aeaad0b0 DE	336	}
aeaad0b0 DE	337
5874e88d	338	static int configure_probes(const struct sr_dev_inst *sdi)
aeaad0b0	339	{
5874e88d DE	340	struct dev_context *devc;
	341	const struct sr_probe *probe;
	342	const GSList *node;
	343	uint64_t probe_bit;
	344
	345	devc = sdi->priv;
	346
	347	devc->channel_mask = 0;
	348	devc->trigger_mask = 0;
	349	devc->trigger_edge_mask = 0;
	350	devc->trigger_values = 0;
	351
	352	for (node = sdi->probes, probe_bit = 1;
	353	node != NULL;
	354	node = node->next, probe_bit <<= 1) {
	355
	356	if (probe_bit >= ((uint64_t)1 << NUM_PROBES)) {
	357	sr_err("Channels over the limit of %d.", NUM_PROBES);
	358	return SR_ERR;
	359	}
	360	probe = node->data;
	361	if (!probe \|\| !probe->enabled)
	362	continue;
	363
	364	/* Enable input channel for this probe. */
	365	devc->channel_mask \|= probe_bit;
	366
	367	if (!probe->trigger \|\| probe->trigger[0] == '\0')
	368	continue;
	369
	370	if (probe->trigger[1] != '\0') {
	371	sr_err("Only one trigger stage is supported.");
	372	return SR_ERR;
	373	}
	374	/* Enable trigger for this probe. */
	375	devc->trigger_mask \|= probe_bit;
	376
	377	/* Configure edge mask and trigger value. */
	378	switch (probe->trigger[0]) {
	379	case '1': devc->trigger_values \|= probe_bit;
	380	case '0': break;
	381
	382	case 'r': devc->trigger_values \|= probe_bit;
	383	case 'f': devc->trigger_edge_mask \|= probe_bit;
	384	break;
	385	default:
	386	sr_err("Trigger type '%c' is not supported.",
	387	probe->trigger[0]);
	388	return SR_ERR;
	389	}
	390	}
	391	return SR_OK;
	392	}
	393
	394	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	395	{
	396	struct drv_context *drvc;
	397	struct dev_context *devc;
	398	struct acquisition_state *acq;
	399	int ret;
	400
aeaad0b0 DE	401	(void)cb_data;
	402
	403	if (sdi->status != SR_ST_ACTIVE)
	404	return SR_ERR_DEV_CLOSED;
	405
5874e88d DE	406	devc = sdi->priv;
	407	drvc = di->priv;
	408
	409	if (devc->acquisition) {
	410	sr_err("Acquisition still in progress?");
	411	return SR_ERR;
	412	}
	413	acq = lwla_alloc_acquisition_state();
	414	if (!acq)
	415	return SR_ERR_MALLOC;
	416
	417	devc->stopping_in_progress = FALSE;
	418	devc->transfer_error = FALSE;
	419
	420	ret = configure_probes(sdi);
	421	if (ret != SR_OK) {
	422	sr_err("Failed to configure probes.");
	423	lwla_free_acquisition_state(acq);
	424	return ret;
	425	}
	426
	427	sr_info("Starting acquisition.");
	428
	429	devc->acquisition = acq;
	430	ret = lwla_setup_acquisition(sdi);
	431	if (ret != SR_OK) {
	432	sr_err("Failed to set up aquisition.");
	433	devc->acquisition = NULL;
	434	lwla_free_acquisition_state(acq);
	435	return ret;
	436	}
	437
	438	ret = lwla_start_acquisition(sdi);
	439	if (ret != SR_OK) {
	440	sr_err("Failed to start aquisition.");
	441	devc->acquisition = NULL;
	442	lwla_free_acquisition_state(acq);
	443	return ret;
	444	}
	445	usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
	446	(struct sr_dev_inst *)sdi);
	447
	448	sr_info("Waiting for data.");
	449
	450	/* Send header packet to the session bus. */
	451	std_session_send_df_header(sdi, LOG_PREFIX);
aeaad0b0 DE	452
	453	return SR_OK;
	454	}
	455
	456	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	457	{
	458	(void)cb_data;
	459
	460	if (sdi->status != SR_ST_ACTIVE)
	461	return SR_ERR_DEV_CLOSED;
	462
5874e88d DE	463	sr_dbg("Stopping acquisition.");
	464
	465	sdi->status = SR_ST_STOPPING;
aeaad0b0 DE	466
	467	return SR_OK;
	468	}
	469
	470	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
	471	.name = "sysclk-lwla",
5874e88d	472	.longname = "SysClk LWLA series",
aeaad0b0 DE	473	.api_version = 1,
	474	.init = init,
	475	.cleanup = cleanup,
	476	.scan = scan,
	477	.dev_list = dev_list,
	478	.dev_clear = dev_clear,
	479	.config_get = config_get,
	480	.config_set = config_set,
	481	.config_list = config_list,
	482	.dev_open = dev_open,
	483	.dev_close = dev_close,
	484	.dev_acquisition_start = dev_acquisition_start,
	485	.dev_acquisition_stop = dev_acquisition_stop,
	486	.priv = NULL,
	487	};