[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 hwopts[] = {
	SR_CONF_CONN,
};

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_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwopts, G_N_ELEMENTS(hwopts), sizeof(int32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, G_N_ELEMENTS(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, G_N_ELEMENTS(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
99c76642 DE	28	static const int32_t hwopts[] = {
	29	SR_CONF_CONN,
	30	};
	31
5874e88d DE	32	static const int32_t hwcaps[] = {
	33	SR_CONF_LOGIC_ANALYZER,
	34	SR_CONF_SAMPLERATE,
	35	SR_CONF_EXTERNAL_CLOCK,
	36	SR_CONF_TRIGGER_TYPE,
29d58767	37	SR_CONF_LIMIT_MSEC,
5874e88d DE	38	SR_CONF_LIMIT_SAMPLES,
	39	};
	40
	41	/* The hardware supports more samplerates than these, but these are the
	42	* options hardcoded into the vendor's Windows GUI.
	43	*/
	44	static const uint64_t samplerates[] = {
	45	SR_MHZ(125), SR_MHZ(100),
	46	SR_MHZ(50), SR_MHZ(20), SR_MHZ(10),
	47	SR_MHZ(5), SR_MHZ(2), SR_MHZ(1),
	48	SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
	49	SR_KHZ(50), SR_KHZ(20), SR_KHZ(10),
	50	SR_KHZ(5), SR_KHZ(2), SR_KHZ(1),
	51	SR_HZ(500), SR_HZ(200), SR_HZ(100),
	52	};
aeaad0b0 DE	53
aeaad0b0 DE	54	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
5874e88d	55	static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;
aeaad0b0 DE	56
	57	static int init(struct sr_context *sr_ctx)
	58	{
	59	return std_init(sr_ctx, di, LOG_PREFIX);
	60	}
	61
5874e88d DE	62	static GSList *gen_probe_list(int num_probes)
	63	{
	64	GSList *list;
	65	struct sr_probe *probe;
	66	int i;
	67	char name[8];
	68
	69	list = NULL;
	70
	71	for (i = num_probes; i > 0; --i) {
	72	/* The LWLA series simply number probes from CH1 to CHxx. */
1f98295d	73	g_snprintf(name, sizeof(name), "CH%d", i);
5874e88d DE	74
	75	probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
	76	list = g_slist_prepend(list, probe);
	77	}
	78
	79	return list;
	80	}
	81
aeaad0b0 DE	82	static GSList scan(GSList options)
aeaad0b0 DE	83	{
5874e88d	84	GSList usb_devices, devices, *node;
aeaad0b0	85	struct drv_context *drvc;
5874e88d DE	86	struct sr_dev_inst *sdi;
	87	struct dev_context *devc;
	88	struct sr_usb_dev_inst *usb;
7ebe9b9e DE	89	struct sr_config *src;
7ebe9b9e DE	90	const char *conn;
5874e88d	91	int device_index;
aeaad0b0	92
aeaad0b0 DE	93	drvc = di->priv;
aeaad0b0 DE	94	drvc->instances = NULL;
7ebe9b9e	95	conn = USB_VID_PID;
5874e88d	96
7ebe9b9e DE	97	for (node = options; node != NULL; node = node->next) {
	98	src = node->data;
	99	if (src->key == SR_CONF_CONN) {
	100	conn = g_variant_get_string(src->data, NULL);
	101	break;
	102	}
	103	}
	104	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	105	devices = NULL;
	106	device_index = 0;
5874e88d DE	107
	108	for (node = usb_devices; node != NULL; node = node->next) {
	109	usb = node->data;
	110
	111	/* Allocate memory for our private driver context. */
	112	devc = g_try_new0(struct dev_context, 1);
	113	if (!devc) {
	114	sr_err("Device context malloc failed.");
	115	sr_usb_dev_inst_free(usb);
	116	continue;
	117	}
	118	/* Register the device with libsigrok. */
	119	sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
	120	VENDOR_NAME, MODEL_NAME, NULL);
	121	if (!sdi) {
	122	sr_err("Failed to instantiate device.");
	123	g_free(devc);
	124	sr_usb_dev_inst_free(usb);
	125	continue;
	126	}
	127	sdi->driver = di;
	128	sdi->priv = devc;
	129	sdi->inst_type = SR_INST_USB;
	130	sdi->conn = usb;
	131	sdi->probes = gen_probe_list(NUM_PROBES);
	132
	133	drvc->instances = g_slist_append(drvc->instances, sdi);
	134	devices = g_slist_append(devices, sdi);
	135	}
aeaad0b0	136
5874e88d	137	g_slist_free(usb_devices);
aeaad0b0 DE	138
	139	return devices;
	140	}
	141
	142	static GSList *dev_list(void)
	143	{
5874e88d DE	144	struct drv_context *drvc;
	145
	146	drvc = di->priv;
	147
	148	return drvc->instances;
	149	}
	150
	151	static void clear_dev_context(void *priv)
	152	{
	153	struct dev_context *devc;
	154
	155	devc = priv;
	156
	157	sr_dbg("Device context cleared.");
	158
	159	lwla_free_acquisition_state(devc->acquisition);
	160	g_free(devc);
aeaad0b0 DE	161	}
	162
	163	static int dev_clear(void)
	164	{
5874e88d	165	return std_dev_clear(di, &clear_dev_context);
aeaad0b0 DE	166	}
	167
	168	static int dev_open(struct sr_dev_inst *sdi)
	169	{
5874e88d DE	170	struct drv_context *drvc;
	171	struct dev_context *devc;
	172	struct sr_usb_dev_inst *usb;
	173	int ret;
aeaad0b0	174
5874e88d	175	drvc = di->priv;
aeaad0b0	176
5874e88d DE	177	if (!drvc) {
	178	sr_err("Driver was not initialized.");
	179	return SR_ERR;
	180	}
aeaad0b0	181
5874e88d DE	182	usb = sdi->conn;
	183	devc = sdi->priv;
	184
	185	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	186	if (ret != SR_OK)
	187	return ret;
	188
	189	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	190	if (ret < 0) {
	191	sr_err("Failed to claim interface: %s.",
	192	libusb_error_name(ret));
	193	return SR_ERR;
	194	}
	195
	196	sdi->status = SR_ST_INITIALIZING;
	197
	198	if (devc->samplerate == 0)
	199	/* Apply default if the samplerate hasn't been set yet. */
	200	devc->samplerate = DEFAULT_SAMPLERATE;
	201
	202	ret = lwla_init_device(sdi);
	203
	204	if (ret == SR_OK)
	205	sdi->status = SR_ST_ACTIVE;
	206
	207	return ret;
aeaad0b0 DE	208	}
	209
	210	static int dev_close(struct sr_dev_inst *sdi)
	211	{
5874e88d DE	212	struct sr_usb_dev_inst *usb;
	213	struct dev_context *devc;
	214
	215	if (!di->priv) {
	216	sr_err("Driver was not initialized.");
	217	return SR_ERR;
	218	}
	219
	220	usb = sdi->conn;
	221	devc = sdi->priv;
aeaad0b0	222
5874e88d DE	223	if (!usb->devhdl)
5874e88d DE	224	return SR_OK;
aeaad0b0	225
5874e88d DE	226	/* Trigger download of the shutdown bitstream. */
	227	devc->selected_clock_source = CLOCK_SOURCE_NONE;
	228
	229	if (lwla_set_clock_source(sdi) != SR_OK)
	230	sr_err("Unable to shut down device.");
	231
	232	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	233	libusb_close(usb->devhdl);
	234
	235	usb->devhdl = NULL;
aeaad0b0 DE	236	sdi->status = SR_ST_INACTIVE;
	237
	238	return SR_OK;
	239	}
	240
	241	static int cleanup(void)
	242	{
5874e88d	243	return dev_clear();
aeaad0b0 DE	244	}
	245
	246	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	247	const struct sr_probe_group *probe_group)
aeaad0b0	248	{
5874e88d	249	struct dev_context *devc;
aeaad0b0	250
aeaad0b0 DE	251	(void)probe_group;
aeaad0b0 DE	252
5874e88d DE	253	if (!sdi)
	254	return SR_ERR_ARG;
	255
	256	devc = sdi->priv;
	257
aeaad0b0	258	switch (key) {
5874e88d DE	259	case SR_CONF_SAMPLERATE:
	260	*data = g_variant_new_uint64(devc->samplerate);
	261	break;
29d58767 DE	262	case SR_CONF_LIMIT_MSEC:
	263	*data = g_variant_new_uint64(devc->limit_msec);
	264	break;
5874e88d DE	265	case SR_CONF_LIMIT_SAMPLES:
	266	*data = g_variant_new_uint64(devc->limit_samples);
	267	break;
	268	case SR_CONF_EXTERNAL_CLOCK:
	269	*data = g_variant_new_boolean(devc->selected_clock_source
	270	>= CLOCK_SOURCE_EXT_RISE);
	271	break;
aeaad0b0 DE	272	default:
	273	return SR_ERR_NA;
	274	}
	275
5874e88d	276	return SR_OK;
aeaad0b0 DE	277	}
	278
	279	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
5874e88d	280	const struct sr_probe_group *probe_group)
aeaad0b0	281	{
29d58767	282	uint64_t value;
5874e88d	283	struct dev_context *devc;
aeaad0b0	284
aeaad0b0 DE	285	(void)probe_group;
aeaad0b0 DE	286
5874e88d DE	287	devc = sdi->priv;
5874e88d DE	288	if (!devc)
aeaad0b0 DE	289	return SR_ERR_DEV_CLOSED;
aeaad0b0 DE	290
aeaad0b0	291	switch (key) {
5874e88d	292	case SR_CONF_SAMPLERATE:
29d58767	293	value = g_variant_get_uint64(data);
29d58767 DE	294	if (value < samplerates[G_N_ELEMENTS(samplerates) - 1]
29d58767 DE	295	\|\| value > samplerates[0])
5874e88d	296	return SR_ERR_SAMPLERATE;
29d58767 DE	297	devc->samplerate = value;
	298	break;
	299	case SR_CONF_LIMIT_MSEC:
	300	value = g_variant_get_uint64(data);
	301	if (value > MAX_LIMIT_MSEC)
	302	return SR_ERR_ARG;
	303	devc->limit_msec = value;
5874e88d DE	304	break;
5874e88d DE	305	case SR_CONF_LIMIT_SAMPLES:
29d58767 DE	306	value = g_variant_get_uint64(data);
	307	if (value > MAX_LIMIT_SAMPLES)
	308	return SR_ERR_ARG;
	309	devc->limit_samples = value;
5874e88d DE	310	break;
	311	case SR_CONF_EXTERNAL_CLOCK:
	312	if (g_variant_get_boolean(data)) {
	313	sr_info("Enabling external clock.");
	314	/* TODO: Allow the external clock to be inverted */
	315	devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
	316	} else {
	317	sr_info("Disabling external clock.");
	318	devc->selected_clock_source = CLOCK_SOURCE_INT;
	319	}
	320	if (sdi->status == SR_ST_ACTIVE)
	321	return lwla_set_clock_source(sdi);
	322	break;
aeaad0b0	323	default:
5874e88d	324	return SR_ERR_NA;
aeaad0b0 DE	325	}
aeaad0b0 DE	326
5874e88d	327	return SR_OK;
aeaad0b0 DE	328	}
	329
	330	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	331	const struct sr_probe_group *probe_group)
aeaad0b0	332	{
5874e88d DE	333	GVariant *gvar;
5874e88d DE	334	GVariantBuilder gvb;
aeaad0b0 DE	335
aeaad0b0 DE	336	(void)sdi;
aeaad0b0 DE	337	(void)probe_group;
aeaad0b0 DE	338
aeaad0b0	339	switch (key) {
99c76642 DE	340	case SR_CONF_SCAN_OPTIONS:
	341	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	342	hwopts, G_N_ELEMENTS(hwopts), sizeof(int32_t));
	343	break;
5874e88d DE	344	case SR_CONF_DEVICE_OPTIONS:
5874e88d DE	345	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
99c76642	346	hwcaps, G_N_ELEMENTS(hwcaps), sizeof(int32_t));
5874e88d DE	347	break;
	348	case SR_CONF_SAMPLERATE:
	349	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	350	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
99c76642	351	samplerates, G_N_ELEMENTS(samplerates),
5874e88d DE	352	sizeof(uint64_t));
	353	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	354	*data = g_variant_builder_end(&gvb);
	355	break;
	356	case SR_CONF_TRIGGER_TYPE:
	357	*data = g_variant_new_string(TRIGGER_TYPES);
	358	break;
aeaad0b0 DE	359	default:
	360	return SR_ERR_NA;
	361	}
	362
5874e88d	363	return SR_OK;
aeaad0b0 DE	364	}
aeaad0b0 DE	365
5874e88d	366	static int configure_probes(const struct sr_dev_inst *sdi)
aeaad0b0	367	{
5874e88d DE	368	struct dev_context *devc;
	369	const struct sr_probe *probe;
	370	const GSList *node;
	371	uint64_t probe_bit;
	372
	373	devc = sdi->priv;
	374
	375	devc->channel_mask = 0;
	376	devc->trigger_mask = 0;
	377	devc->trigger_edge_mask = 0;
	378	devc->trigger_values = 0;
	379
0b92c32c	380	for (node = sdi->probes; node != NULL; node = node->next) {
5874e88d DE	381	probe = node->data;
	382	if (!probe \|\| !probe->enabled)
	383	continue;
	384
0b92c32c DE	385	if (probe->index >= NUM_PROBES) {
	386	sr_err("Channel index %d out of range.", probe->index);
	387	return SR_ERR_BUG;
	388	}
	389	probe_bit = (uint64_t)1 << probe->index;
	390
5874e88d DE	391	/* Enable input channel for this probe. */
	392	devc->channel_mask \|= probe_bit;
	393
	394	if (!probe->trigger \|\| probe->trigger[0] == '\0')
	395	continue;
	396
	397	if (probe->trigger[1] != '\0') {
	398	sr_err("Only one trigger stage is supported.");
	399	return SR_ERR;
	400	}
	401	/* Enable trigger for this probe. */
	402	devc->trigger_mask \|= probe_bit;
	403
	404	/* Configure edge mask and trigger value. */
	405	switch (probe->trigger[0]) {
	406	case '1': devc->trigger_values \|= probe_bit;
	407	case '0': break;
	408
	409	case 'r': devc->trigger_values \|= probe_bit;
	410	case 'f': devc->trigger_edge_mask \|= probe_bit;
	411	break;
	412	default:
	413	sr_err("Trigger type '%c' is not supported.",
	414	probe->trigger[0]);
	415	return SR_ERR;
	416	}
	417	}
	418	return SR_OK;
	419	}
	420
	421	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	422	{
	423	struct drv_context *drvc;
	424	struct dev_context *devc;
	425	struct acquisition_state *acq;
	426	int ret;
	427
aeaad0b0 DE	428	(void)cb_data;
	429
	430	if (sdi->status != SR_ST_ACTIVE)
	431	return SR_ERR_DEV_CLOSED;
	432
5874e88d DE	433	devc = sdi->priv;
	434	drvc = di->priv;
	435
	436	if (devc->acquisition) {
	437	sr_err("Acquisition still in progress?");
	438	return SR_ERR;
	439	}
	440	acq = lwla_alloc_acquisition_state();
	441	if (!acq)
	442	return SR_ERR_MALLOC;
	443
	444	devc->stopping_in_progress = FALSE;
	445	devc->transfer_error = FALSE;
	446
	447	ret = configure_probes(sdi);
	448	if (ret != SR_OK) {
	449	sr_err("Failed to configure probes.");
	450	lwla_free_acquisition_state(acq);
	451	return ret;
	452	}
	453
	454	sr_info("Starting acquisition.");
	455
	456	devc->acquisition = acq;
	457	ret = lwla_setup_acquisition(sdi);
	458	if (ret != SR_OK) {
	459	sr_err("Failed to set up aquisition.");
	460	devc->acquisition = NULL;
	461	lwla_free_acquisition_state(acq);
	462	return ret;
	463	}
	464
	465	ret = lwla_start_acquisition(sdi);
	466	if (ret != SR_OK) {
	467	sr_err("Failed to start aquisition.");
	468	devc->acquisition = NULL;
	469	lwla_free_acquisition_state(acq);
	470	return ret;
	471	}
	472	usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
	473	(struct sr_dev_inst *)sdi);
	474
	475	sr_info("Waiting for data.");
	476
	477	/* Send header packet to the session bus. */
	478	std_session_send_df_header(sdi, LOG_PREFIX);
aeaad0b0 DE	479
	480	return SR_OK;
	481	}
	482
	483	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	484	{
	485	(void)cb_data;
	486
	487	if (sdi->status != SR_ST_ACTIVE)
	488	return SR_ERR_DEV_CLOSED;
	489
5874e88d DE	490	sr_dbg("Stopping acquisition.");
	491
	492	sdi->status = SR_ST_STOPPING;
aeaad0b0 DE	493
	494	return SR_OK;
	495	}
	496
	497	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
	498	.name = "sysclk-lwla",
5874e88d	499	.longname = "SysClk LWLA series",
aeaad0b0 DE	500	.api_version = 1,
	501	.init = init,
	502	.cleanup = cleanup,
	503	.scan = scan,
	504	.dev_list = dev_list,
	505	.dev_clear = dev_clear,
	506	.config_get = config_get,
	507	.config_set = config_set,
	508	.config_list = config_list,
	509	.dev_open = dev_open,
	510	.dev_close = dev_close,
	511	.dev_acquisition_start = dev_acquisition_start,
	512	.dev_acquisition_stop = dev_acquisition_stop,
	513	.priv = NULL,
	514	};