[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_MSEC,
	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_snprintf(name, sizeof(name), "CH%d", 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;
	struct sr_config *src;
	const char *conn;
	int device_index;

	drvc = di->priv;
	drvc->instances = NULL;
	conn = USB_VID_PID;

	for (node = options; node != NULL; node = node->next) {
		src = node->data;
		if (src->key == SR_CONF_CONN) {
			conn = g_variant_get_string(src->data, NULL);
			break;
		}
	}
	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	devices = NULL;
	device_index = 0;

	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_MSEC:
		*data = g_variant_new_uint64(devc->limit_msec);
		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)
{
	uint64_t value;
	struct dev_context *devc;

	(void)probe_group;

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

	switch (key) {
	case SR_CONF_SAMPLERATE:
		value = g_variant_get_uint64(data);
		if (value < samplerates[G_N_ELEMENTS(samplerates) - 1]
				|| value > samplerates[0])
			return SR_ERR_SAMPLERATE;
		devc->samplerate = value;
		break;
	case SR_CONF_LIMIT_MSEC:
		value = g_variant_get_uint64(data);
		if (value > MAX_LIMIT_MSEC)
			return SR_ERR_ARG;
		devc->limit_msec = value;
		break;
	case SR_CONF_LIMIT_SAMPLES:
		value = g_variant_get_uint64(data);
		if (value > MAX_LIMIT_SAMPLES)
			return SR_ERR_ARG;
		devc->limit_samples = value;
		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; node != NULL; node = node->next) {
		probe = node->data;
		if (!probe || !probe->enabled)
			continue;

		if (probe->index >= NUM_PROBES) {
			sr_err("Channel index %d out of range.", probe->index);
			return SR_ERR_BUG;
		}
		probe_bit = (uint64_t)1 << probe->index;

		/* 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,
29d58767	33	SR_CONF_LIMIT_MSEC,
5874e88d DE	34	SR_CONF_LIMIT_SAMPLES,
	35	};
	36
	37	/* The hardware supports more samplerates than these, but these are the
	38	* options hardcoded into the vendor's Windows GUI.
	39	*/
	40	static const uint64_t samplerates[] = {
	41	SR_MHZ(125), SR_MHZ(100),
	42	SR_MHZ(50), SR_MHZ(20), SR_MHZ(10),
	43	SR_MHZ(5), SR_MHZ(2), SR_MHZ(1),
	44	SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
	45	SR_KHZ(50), SR_KHZ(20), SR_KHZ(10),
	46	SR_KHZ(5), SR_KHZ(2), SR_KHZ(1),
	47	SR_HZ(500), SR_HZ(200), SR_HZ(100),
	48	};
aeaad0b0 DE	49
aeaad0b0 DE	50	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
5874e88d	51	static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;
aeaad0b0 DE	52
	53	static int init(struct sr_context *sr_ctx)
	54	{
	55	return std_init(sr_ctx, di, LOG_PREFIX);
	56	}
	57
5874e88d DE	58	static GSList *gen_probe_list(int num_probes)
	59	{
	60	GSList *list;
	61	struct sr_probe *probe;
	62	int i;
	63	char name[8];
	64
	65	list = NULL;
	66
	67	for (i = num_probes; i > 0; --i) {
	68	/* The LWLA series simply number probes from CH1 to CHxx. */
1f98295d	69	g_snprintf(name, sizeof(name), "CH%d", i);
5874e88d DE	70
	71	probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
	72	list = g_slist_prepend(list, probe);
	73	}
	74
	75	return list;
	76	}
	77
aeaad0b0 DE	78	static GSList scan(GSList options)
aeaad0b0 DE	79	{
5874e88d	80	GSList usb_devices, devices, *node;
aeaad0b0	81	struct drv_context *drvc;
5874e88d DE	82	struct sr_dev_inst *sdi;
	83	struct dev_context *devc;
	84	struct sr_usb_dev_inst *usb;
7ebe9b9e DE	85	struct sr_config *src;
7ebe9b9e DE	86	const char *conn;
5874e88d	87	int device_index;
aeaad0b0	88
aeaad0b0 DE	89	drvc = di->priv;
aeaad0b0 DE	90	drvc->instances = NULL;
7ebe9b9e	91	conn = USB_VID_PID;
5874e88d	92
7ebe9b9e DE	93	for (node = options; node != NULL; node = node->next) {
	94	src = node->data;
	95	if (src->key == SR_CONF_CONN) {
	96	conn = g_variant_get_string(src->data, NULL);
	97	break;
	98	}
	99	}
	100	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	101	devices = NULL;
	102	device_index = 0;
5874e88d DE	103
	104	for (node = usb_devices; node != NULL; node = node->next) {
	105	usb = node->data;
	106
	107	/* Allocate memory for our private driver context. */
	108	devc = g_try_new0(struct dev_context, 1);
	109	if (!devc) {
	110	sr_err("Device context malloc failed.");
	111	sr_usb_dev_inst_free(usb);
	112	continue;
	113	}
	114	/* Register the device with libsigrok. */
	115	sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
	116	VENDOR_NAME, MODEL_NAME, NULL);
	117	if (!sdi) {
	118	sr_err("Failed to instantiate device.");
	119	g_free(devc);
	120	sr_usb_dev_inst_free(usb);
	121	continue;
	122	}
	123	sdi->driver = di;
	124	sdi->priv = devc;
	125	sdi->inst_type = SR_INST_USB;
	126	sdi->conn = usb;
	127	sdi->probes = gen_probe_list(NUM_PROBES);
	128
	129	drvc->instances = g_slist_append(drvc->instances, sdi);
	130	devices = g_slist_append(devices, sdi);
	131	}
aeaad0b0	132
5874e88d	133	g_slist_free(usb_devices);
aeaad0b0 DE	134
	135	return devices;
	136	}
	137
	138	static GSList *dev_list(void)
	139	{
5874e88d DE	140	struct drv_context *drvc;
	141
	142	drvc = di->priv;
	143
	144	return drvc->instances;
	145	}
	146
	147	static void clear_dev_context(void *priv)
	148	{
	149	struct dev_context *devc;
	150
	151	devc = priv;
	152
	153	sr_dbg("Device context cleared.");
	154
	155	lwla_free_acquisition_state(devc->acquisition);
	156	g_free(devc);
aeaad0b0 DE	157	}
	158
	159	static int dev_clear(void)
	160	{
5874e88d	161	return std_dev_clear(di, &clear_dev_context);
aeaad0b0 DE	162	}
	163
	164	static int dev_open(struct sr_dev_inst *sdi)
	165	{
5874e88d DE	166	struct drv_context *drvc;
	167	struct dev_context *devc;
	168	struct sr_usb_dev_inst *usb;
	169	int ret;
aeaad0b0	170
5874e88d	171	drvc = di->priv;
aeaad0b0	172
5874e88d DE	173	if (!drvc) {
	174	sr_err("Driver was not initialized.");
	175	return SR_ERR;
	176	}
aeaad0b0	177
5874e88d DE	178	usb = sdi->conn;
	179	devc = sdi->priv;
	180
	181	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	182	if (ret != SR_OK)
	183	return ret;
	184
	185	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	186	if (ret < 0) {
	187	sr_err("Failed to claim interface: %s.",
	188	libusb_error_name(ret));
	189	return SR_ERR;
	190	}
	191
	192	sdi->status = SR_ST_INITIALIZING;
	193
	194	if (devc->samplerate == 0)
	195	/* Apply default if the samplerate hasn't been set yet. */
	196	devc->samplerate = DEFAULT_SAMPLERATE;
	197
	198	ret = lwla_init_device(sdi);
	199
	200	if (ret == SR_OK)
	201	sdi->status = SR_ST_ACTIVE;
	202
	203	return ret;
aeaad0b0 DE	204	}
	205
	206	static int dev_close(struct sr_dev_inst *sdi)
	207	{
5874e88d DE	208	struct sr_usb_dev_inst *usb;
	209	struct dev_context *devc;
	210
	211	if (!di->priv) {
	212	sr_err("Driver was not initialized.");
	213	return SR_ERR;
	214	}
	215
	216	usb = sdi->conn;
	217	devc = sdi->priv;
aeaad0b0	218
5874e88d DE	219	if (!usb->devhdl)
5874e88d DE	220	return SR_OK;
aeaad0b0	221
5874e88d DE	222	/* Trigger download of the shutdown bitstream. */
	223	devc->selected_clock_source = CLOCK_SOURCE_NONE;
	224
	225	if (lwla_set_clock_source(sdi) != SR_OK)
	226	sr_err("Unable to shut down device.");
	227
	228	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	229	libusb_close(usb->devhdl);
	230
	231	usb->devhdl = NULL;
aeaad0b0 DE	232	sdi->status = SR_ST_INACTIVE;
	233
	234	return SR_OK;
	235	}
	236
	237	static int cleanup(void)
	238	{
5874e88d	239	return dev_clear();
aeaad0b0 DE	240	}
	241
	242	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	243	const struct sr_probe_group *probe_group)
aeaad0b0	244	{
5874e88d	245	struct dev_context *devc;
aeaad0b0	246
aeaad0b0 DE	247	(void)probe_group;
aeaad0b0 DE	248
5874e88d DE	249	if (!sdi)
	250	return SR_ERR_ARG;
	251
	252	devc = sdi->priv;
	253
aeaad0b0	254	switch (key) {
5874e88d DE	255	case SR_CONF_SAMPLERATE:
	256	*data = g_variant_new_uint64(devc->samplerate);
	257	break;
29d58767 DE	258	case SR_CONF_LIMIT_MSEC:
	259	*data = g_variant_new_uint64(devc->limit_msec);
	260	break;
5874e88d DE	261	case SR_CONF_LIMIT_SAMPLES:
	262	*data = g_variant_new_uint64(devc->limit_samples);
	263	break;
	264	case SR_CONF_EXTERNAL_CLOCK:
	265	*data = g_variant_new_boolean(devc->selected_clock_source
	266	>= CLOCK_SOURCE_EXT_RISE);
	267	break;
aeaad0b0 DE	268	default:
	269	return SR_ERR_NA;
	270	}
	271
5874e88d	272	return SR_OK;
aeaad0b0 DE	273	}
	274
	275	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
5874e88d	276	const struct sr_probe_group *probe_group)
aeaad0b0	277	{
29d58767	278	uint64_t value;
5874e88d	279	struct dev_context *devc;
aeaad0b0	280
aeaad0b0 DE	281	(void)probe_group;
aeaad0b0 DE	282
5874e88d DE	283	devc = sdi->priv;
5874e88d DE	284	if (!devc)
aeaad0b0 DE	285	return SR_ERR_DEV_CLOSED;
aeaad0b0 DE	286
aeaad0b0	287	switch (key) {
5874e88d	288	case SR_CONF_SAMPLERATE:
29d58767	289	value = g_variant_get_uint64(data);
29d58767 DE	290	if (value < samplerates[G_N_ELEMENTS(samplerates) - 1]
29d58767 DE	291	\|\| value > samplerates[0])
5874e88d	292	return SR_ERR_SAMPLERATE;
29d58767 DE	293	devc->samplerate = value;
	294	break;
	295	case SR_CONF_LIMIT_MSEC:
	296	value = g_variant_get_uint64(data);
	297	if (value > MAX_LIMIT_MSEC)
	298	return SR_ERR_ARG;
	299	devc->limit_msec = value;
5874e88d DE	300	break;
5874e88d DE	301	case SR_CONF_LIMIT_SAMPLES:
29d58767 DE	302	value = g_variant_get_uint64(data);
	303	if (value > MAX_LIMIT_SAMPLES)
	304	return SR_ERR_ARG;
	305	devc->limit_samples = value;
5874e88d DE	306	break;
	307	case SR_CONF_EXTERNAL_CLOCK:
	308	if (g_variant_get_boolean(data)) {
	309	sr_info("Enabling external clock.");
	310	/* TODO: Allow the external clock to be inverted */
	311	devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
	312	} else {
	313	sr_info("Disabling external clock.");
	314	devc->selected_clock_source = CLOCK_SOURCE_INT;
	315	}
	316	if (sdi->status == SR_ST_ACTIVE)
	317	return lwla_set_clock_source(sdi);
	318	break;
aeaad0b0	319	default:
5874e88d	320	return SR_ERR_NA;
aeaad0b0 DE	321	}
aeaad0b0 DE	322
5874e88d	323	return SR_OK;
aeaad0b0 DE	324	}
	325
	326	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	327	const struct sr_probe_group *probe_group)
aeaad0b0	328	{
5874e88d DE	329	GVariant *gvar;
5874e88d DE	330	GVariantBuilder gvb;
aeaad0b0 DE	331
aeaad0b0 DE	332	(void)sdi;
aeaad0b0 DE	333	(void)probe_group;
aeaad0b0 DE	334
aeaad0b0	335	switch (key) {
5874e88d DE	336	case SR_CONF_DEVICE_OPTIONS:
	337	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	338	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	339	break;
	340	case SR_CONF_SAMPLERATE:
	341	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	342	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	343	samplerates, ARRAY_SIZE(samplerates),
	344	sizeof(uint64_t));
	345	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	346	*data = g_variant_builder_end(&gvb);
	347	break;
	348	case SR_CONF_TRIGGER_TYPE:
	349	*data = g_variant_new_string(TRIGGER_TYPES);
	350	break;
aeaad0b0 DE	351	default:
	352	return SR_ERR_NA;
	353	}
	354
5874e88d	355	return SR_OK;
aeaad0b0 DE	356	}
aeaad0b0 DE	357
5874e88d	358	static int configure_probes(const struct sr_dev_inst *sdi)
aeaad0b0	359	{
5874e88d DE	360	struct dev_context *devc;
	361	const struct sr_probe *probe;
	362	const GSList *node;
	363	uint64_t probe_bit;
	364
	365	devc = sdi->priv;
	366
	367	devc->channel_mask = 0;
	368	devc->trigger_mask = 0;
	369	devc->trigger_edge_mask = 0;
	370	devc->trigger_values = 0;
	371
0b92c32c	372	for (node = sdi->probes; node != NULL; node = node->next) {
5874e88d DE	373	probe = node->data;
	374	if (!probe \|\| !probe->enabled)
	375	continue;
	376
0b92c32c DE	377	if (probe->index >= NUM_PROBES) {
	378	sr_err("Channel index %d out of range.", probe->index);
	379	return SR_ERR_BUG;
	380	}
	381	probe_bit = (uint64_t)1 << probe->index;
	382
5874e88d DE	383	/* Enable input channel for this probe. */
	384	devc->channel_mask \|= probe_bit;
	385
	386	if (!probe->trigger \|\| probe->trigger[0] == '\0')
	387	continue;
	388
	389	if (probe->trigger[1] != '\0') {
	390	sr_err("Only one trigger stage is supported.");
	391	return SR_ERR;
	392	}
	393	/* Enable trigger for this probe. */
	394	devc->trigger_mask \|= probe_bit;
	395
	396	/* Configure edge mask and trigger value. */
	397	switch (probe->trigger[0]) {
	398	case '1': devc->trigger_values \|= probe_bit;
	399	case '0': break;
	400
	401	case 'r': devc->trigger_values \|= probe_bit;
	402	case 'f': devc->trigger_edge_mask \|= probe_bit;
	403	break;
	404	default:
	405	sr_err("Trigger type '%c' is not supported.",
	406	probe->trigger[0]);
	407	return SR_ERR;
	408	}
	409	}
	410	return SR_OK;
	411	}
	412
	413	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	414	{
	415	struct drv_context *drvc;
	416	struct dev_context *devc;
	417	struct acquisition_state *acq;
	418	int ret;
	419
aeaad0b0 DE	420	(void)cb_data;
	421
	422	if (sdi->status != SR_ST_ACTIVE)
	423	return SR_ERR_DEV_CLOSED;
	424
5874e88d DE	425	devc = sdi->priv;
	426	drvc = di->priv;
	427
	428	if (devc->acquisition) {
	429	sr_err("Acquisition still in progress?");
	430	return SR_ERR;
	431	}
	432	acq = lwla_alloc_acquisition_state();
	433	if (!acq)
	434	return SR_ERR_MALLOC;
	435
	436	devc->stopping_in_progress = FALSE;
	437	devc->transfer_error = FALSE;
	438
	439	ret = configure_probes(sdi);
	440	if (ret != SR_OK) {
	441	sr_err("Failed to configure probes.");
	442	lwla_free_acquisition_state(acq);
	443	return ret;
	444	}
	445
	446	sr_info("Starting acquisition.");
	447
	448	devc->acquisition = acq;
	449	ret = lwla_setup_acquisition(sdi);
	450	if (ret != SR_OK) {
	451	sr_err("Failed to set up aquisition.");
	452	devc->acquisition = NULL;
	453	lwla_free_acquisition_state(acq);
	454	return ret;
	455	}
	456
	457	ret = lwla_start_acquisition(sdi);
	458	if (ret != SR_OK) {
	459	sr_err("Failed to start aquisition.");
	460	devc->acquisition = NULL;
	461	lwla_free_acquisition_state(acq);
	462	return ret;
	463	}
	464	usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
	465	(struct sr_dev_inst *)sdi);
	466
	467	sr_info("Waiting for data.");
	468
	469	/* Send header packet to the session bus. */
	470	std_session_send_df_header(sdi, LOG_PREFIX);
aeaad0b0 DE	471
	472	return SR_OK;
	473	}
	474
	475	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	476	{
	477	(void)cb_data;
	478
	479	if (sdi->status != SR_ST_ACTIVE)
	480	return SR_ERR_DEV_CLOSED;
	481
5874e88d DE	482	sr_dbg("Stopping acquisition.");
	483
	484	sdi->status = SR_ST_STOPPING;
aeaad0b0 DE	485
	486	return SR_OK;
	487	}
	488
	489	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
	490	.name = "sysclk-lwla",
5874e88d	491	.longname = "SysClk LWLA series",
aeaad0b0 DE	492	.api_version = 1,
	493	.init = init,
	494	.cleanup = cleanup,
	495	.scan = scan,
	496	.dev_list = dev_list,
	497	.dev_clear = dev_clear,
	498	.config_get = config_get,
	499	.config_set = config_set,
	500	.config_list = config_list,
	501	.dev_open = dev_open,
	502	.dev_close = dev_close,
	503	.dev_acquisition_start = dev_acquisition_start,
	504	.dev_acquisition_stop = dev_acquisition_stop,
	505	.priv = NULL,
	506	};