[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;
	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 = g_slist_length(drvc->instances);

	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	93	drvc = di->priv;
7ebe9b9e	94	conn = USB_VID_PID;
5874e88d	95
7ebe9b9e DE	96	for (node = options; node != NULL; node = node->next) {
	97	src = node->data;
	98	if (src->key == SR_CONF_CONN) {
	99	conn = g_variant_get_string(src->data, NULL);
	100	break;
	101	}
	102	}
	103	usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
	104	devices = NULL;
50cad98d	105	device_index = g_slist_length(drvc->instances);
5874e88d DE	106
	107	for (node = usb_devices; node != NULL; node = node->next) {
	108	usb = node->data;
	109
	110	/* Allocate memory for our private driver context. */
	111	devc = g_try_new0(struct dev_context, 1);
	112	if (!devc) {
	113	sr_err("Device context malloc failed.");
	114	sr_usb_dev_inst_free(usb);
	115	continue;
	116	}
	117	/* Register the device with libsigrok. */
	118	sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
	119	VENDOR_NAME, MODEL_NAME, NULL);
	120	if (!sdi) {
	121	sr_err("Failed to instantiate device.");
	122	g_free(devc);
	123	sr_usb_dev_inst_free(usb);
	124	continue;
	125	}
	126	sdi->driver = di;
	127	sdi->priv = devc;
	128	sdi->inst_type = SR_INST_USB;
	129	sdi->conn = usb;
	130	sdi->probes = gen_probe_list(NUM_PROBES);
	131
	132	drvc->instances = g_slist_append(drvc->instances, sdi);
	133	devices = g_slist_append(devices, sdi);
	134	}
aeaad0b0	135
5874e88d	136	g_slist_free(usb_devices);
aeaad0b0 DE	137
	138	return devices;
	139	}
	140
	141	static GSList *dev_list(void)
	142	{
5874e88d DE	143	struct drv_context *drvc;
	144
	145	drvc = di->priv;
	146
	147	return drvc->instances;
	148	}
	149
	150	static void clear_dev_context(void *priv)
	151	{
	152	struct dev_context *devc;
	153
	154	devc = priv;
	155
	156	sr_dbg("Device context cleared.");
	157
	158	lwla_free_acquisition_state(devc->acquisition);
	159	g_free(devc);
aeaad0b0 DE	160	}
	161
	162	static int dev_clear(void)
	163	{
5874e88d	164	return std_dev_clear(di, &clear_dev_context);
aeaad0b0 DE	165	}
	166
	167	static int dev_open(struct sr_dev_inst *sdi)
	168	{
5874e88d DE	169	struct drv_context *drvc;
	170	struct dev_context *devc;
	171	struct sr_usb_dev_inst *usb;
	172	int ret;
aeaad0b0	173
5874e88d	174	drvc = di->priv;
aeaad0b0	175
5874e88d DE	176	if (!drvc) {
	177	sr_err("Driver was not initialized.");
	178	return SR_ERR;
	179	}
aeaad0b0	180
5874e88d DE	181	usb = sdi->conn;
	182	devc = sdi->priv;
	183
	184	ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	185	if (ret != SR_OK)
	186	return ret;
	187
	188	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
	189	if (ret < 0) {
	190	sr_err("Failed to claim interface: %s.",
	191	libusb_error_name(ret));
	192	return SR_ERR;
	193	}
	194
	195	sdi->status = SR_ST_INITIALIZING;
	196
	197	if (devc->samplerate == 0)
	198	/* Apply default if the samplerate hasn't been set yet. */
	199	devc->samplerate = DEFAULT_SAMPLERATE;
	200
	201	ret = lwla_init_device(sdi);
	202
	203	if (ret == SR_OK)
	204	sdi->status = SR_ST_ACTIVE;
	205
	206	return ret;
aeaad0b0 DE	207	}
	208
	209	static int dev_close(struct sr_dev_inst *sdi)
	210	{
5874e88d DE	211	struct sr_usb_dev_inst *usb;
	212	struct dev_context *devc;
	213
	214	if (!di->priv) {
	215	sr_err("Driver was not initialized.");
	216	return SR_ERR;
	217	}
	218
	219	usb = sdi->conn;
	220	devc = sdi->priv;
aeaad0b0	221
5874e88d DE	222	if (!usb->devhdl)
5874e88d DE	223	return SR_OK;
aeaad0b0	224
5874e88d DE	225	/* Trigger download of the shutdown bitstream. */
	226	devc->selected_clock_source = CLOCK_SOURCE_NONE;
	227
	228	if (lwla_set_clock_source(sdi) != SR_OK)
	229	sr_err("Unable to shut down device.");
	230
	231	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	232	libusb_close(usb->devhdl);
	233
	234	usb->devhdl = NULL;
aeaad0b0 DE	235	sdi->status = SR_ST_INACTIVE;
	236
	237	return SR_OK;
	238	}
	239
	240	static int cleanup(void)
	241	{
5874e88d	242	return dev_clear();
aeaad0b0 DE	243	}
	244
	245	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	246	const struct sr_probe_group *probe_group)
aeaad0b0	247	{
5874e88d	248	struct dev_context *devc;
aeaad0b0	249
aeaad0b0 DE	250	(void)probe_group;
aeaad0b0 DE	251
5874e88d DE	252	if (!sdi)
	253	return SR_ERR_ARG;
	254
	255	devc = sdi->priv;
	256
aeaad0b0	257	switch (key) {
5874e88d DE	258	case SR_CONF_SAMPLERATE:
	259	*data = g_variant_new_uint64(devc->samplerate);
	260	break;
29d58767 DE	261	case SR_CONF_LIMIT_MSEC:
	262	*data = g_variant_new_uint64(devc->limit_msec);
	263	break;
5874e88d DE	264	case SR_CONF_LIMIT_SAMPLES:
	265	*data = g_variant_new_uint64(devc->limit_samples);
	266	break;
	267	case SR_CONF_EXTERNAL_CLOCK:
	268	*data = g_variant_new_boolean(devc->selected_clock_source
	269	>= CLOCK_SOURCE_EXT_RISE);
	270	break;
aeaad0b0 DE	271	default:
	272	return SR_ERR_NA;
	273	}
	274
5874e88d	275	return SR_OK;
aeaad0b0 DE	276	}
	277
	278	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
5874e88d	279	const struct sr_probe_group *probe_group)
aeaad0b0	280	{
29d58767	281	uint64_t value;
5874e88d	282	struct dev_context *devc;
aeaad0b0	283
aeaad0b0 DE	284	(void)probe_group;
aeaad0b0 DE	285
5874e88d DE	286	devc = sdi->priv;
5874e88d DE	287	if (!devc)
aeaad0b0 DE	288	return SR_ERR_DEV_CLOSED;
aeaad0b0 DE	289
aeaad0b0	290	switch (key) {
5874e88d	291	case SR_CONF_SAMPLERATE:
29d58767	292	value = g_variant_get_uint64(data);
29d58767 DE	293	if (value < samplerates[G_N_ELEMENTS(samplerates) - 1]
29d58767 DE	294	\|\| value > samplerates[0])
5874e88d	295	return SR_ERR_SAMPLERATE;
29d58767 DE	296	devc->samplerate = value;
	297	break;
	298	case SR_CONF_LIMIT_MSEC:
	299	value = g_variant_get_uint64(data);
	300	if (value > MAX_LIMIT_MSEC)
	301	return SR_ERR_ARG;
	302	devc->limit_msec = value;
5874e88d DE	303	break;
5874e88d DE	304	case SR_CONF_LIMIT_SAMPLES:
29d58767 DE	305	value = g_variant_get_uint64(data);
	306	if (value > MAX_LIMIT_SAMPLES)
	307	return SR_ERR_ARG;
	308	devc->limit_samples = value;
5874e88d DE	309	break;
	310	case SR_CONF_EXTERNAL_CLOCK:
	311	if (g_variant_get_boolean(data)) {
	312	sr_info("Enabling external clock.");
	313	/* TODO: Allow the external clock to be inverted */
	314	devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
	315	} else {
	316	sr_info("Disabling external clock.");
	317	devc->selected_clock_source = CLOCK_SOURCE_INT;
	318	}
	319	if (sdi->status == SR_ST_ACTIVE)
	320	return lwla_set_clock_source(sdi);
	321	break;
aeaad0b0	322	default:
5874e88d	323	return SR_ERR_NA;
aeaad0b0 DE	324	}
aeaad0b0 DE	325
5874e88d	326	return SR_OK;
aeaad0b0 DE	327	}
	328
	329	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
5874e88d	330	const struct sr_probe_group *probe_group)
aeaad0b0	331	{
5874e88d DE	332	GVariant *gvar;
5874e88d DE	333	GVariantBuilder gvb;
aeaad0b0 DE	334
aeaad0b0 DE	335	(void)sdi;
aeaad0b0 DE	336	(void)probe_group;
aeaad0b0 DE	337
aeaad0b0	338	switch (key) {
99c76642 DE	339	case SR_CONF_SCAN_OPTIONS:
	340	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	341	hwopts, G_N_ELEMENTS(hwopts), sizeof(int32_t));
	342	break;
5874e88d DE	343	case SR_CONF_DEVICE_OPTIONS:
5874e88d DE	344	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
99c76642	345	hwcaps, G_N_ELEMENTS(hwcaps), sizeof(int32_t));
5874e88d DE	346	break;
	347	case SR_CONF_SAMPLERATE:
	348	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	349	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
99c76642	350	samplerates, G_N_ELEMENTS(samplerates),
5874e88d DE	351	sizeof(uint64_t));
	352	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	353	*data = g_variant_builder_end(&gvb);
	354	break;
	355	case SR_CONF_TRIGGER_TYPE:
	356	*data = g_variant_new_string(TRIGGER_TYPES);
	357	break;
aeaad0b0 DE	358	default:
	359	return SR_ERR_NA;
	360	}
	361
5874e88d	362	return SR_OK;
aeaad0b0 DE	363	}
aeaad0b0 DE	364
5874e88d	365	static int configure_probes(const struct sr_dev_inst *sdi)
aeaad0b0	366	{
5874e88d DE	367	struct dev_context *devc;
	368	const struct sr_probe *probe;
	369	const GSList *node;
	370	uint64_t probe_bit;
	371
	372	devc = sdi->priv;
	373
	374	devc->channel_mask = 0;
	375	devc->trigger_mask = 0;
	376	devc->trigger_edge_mask = 0;
	377	devc->trigger_values = 0;
	378
0b92c32c	379	for (node = sdi->probes; node != NULL; node = node->next) {
5874e88d DE	380	probe = node->data;
	381	if (!probe \|\| !probe->enabled)
	382	continue;
	383
0b92c32c DE	384	if (probe->index >= NUM_PROBES) {
	385	sr_err("Channel index %d out of range.", probe->index);
	386	return SR_ERR_BUG;
	387	}
	388	probe_bit = (uint64_t)1 << probe->index;
	389
5874e88d DE	390	/* Enable input channel for this probe. */
	391	devc->channel_mask \|= probe_bit;
	392
	393	if (!probe->trigger \|\| probe->trigger[0] == '\0')
	394	continue;
	395
	396	if (probe->trigger[1] != '\0') {
	397	sr_err("Only one trigger stage is supported.");
	398	return SR_ERR;
	399	}
	400	/* Enable trigger for this probe. */
	401	devc->trigger_mask \|= probe_bit;
	402
	403	/* Configure edge mask and trigger value. */
	404	switch (probe->trigger[0]) {
	405	case '1': devc->trigger_values \|= probe_bit;
	406	case '0': break;
	407
	408	case 'r': devc->trigger_values \|= probe_bit;
	409	case 'f': devc->trigger_edge_mask \|= probe_bit;
	410	break;
	411	default:
	412	sr_err("Trigger type '%c' is not supported.",
	413	probe->trigger[0]);
	414	return SR_ERR;
	415	}
	416	}
	417	return SR_OK;
	418	}
	419
	420	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	421	{
	422	struct drv_context *drvc;
	423	struct dev_context *devc;
	424	struct acquisition_state *acq;
	425	int ret;
	426
aeaad0b0 DE	427	(void)cb_data;
	428
	429	if (sdi->status != SR_ST_ACTIVE)
	430	return SR_ERR_DEV_CLOSED;
	431
5874e88d DE	432	devc = sdi->priv;
	433	drvc = di->priv;
	434
	435	if (devc->acquisition) {
	436	sr_err("Acquisition still in progress?");
	437	return SR_ERR;
	438	}
	439	acq = lwla_alloc_acquisition_state();
	440	if (!acq)
	441	return SR_ERR_MALLOC;
	442
	443	devc->stopping_in_progress = FALSE;
	444	devc->transfer_error = FALSE;
	445
	446	ret = configure_probes(sdi);
	447	if (ret != SR_OK) {
	448	sr_err("Failed to configure probes.");
	449	lwla_free_acquisition_state(acq);
	450	return ret;
	451	}
	452
	453	sr_info("Starting acquisition.");
	454
	455	devc->acquisition = acq;
	456	ret = lwla_setup_acquisition(sdi);
	457	if (ret != SR_OK) {
	458	sr_err("Failed to set up aquisition.");
	459	devc->acquisition = NULL;
	460	lwla_free_acquisition_state(acq);
	461	return ret;
	462	}
	463
	464	ret = lwla_start_acquisition(sdi);
	465	if (ret != SR_OK) {
	466	sr_err("Failed to start aquisition.");
	467	devc->acquisition = NULL;
	468	lwla_free_acquisition_state(acq);
	469	return ret;
	470	}
	471	usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
	472	(struct sr_dev_inst *)sdi);
	473
	474	sr_info("Waiting for data.");
	475
	476	/* Send header packet to the session bus. */
	477	std_session_send_df_header(sdi, LOG_PREFIX);
aeaad0b0 DE	478
	479	return SR_OK;
	480	}
	481
	482	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	483	{
	484	(void)cb_data;
	485
	486	if (sdi->status != SR_ST_ACTIVE)
	487	return SR_ERR_DEV_CLOSED;
	488
5874e88d DE	489	sr_dbg("Stopping acquisition.");
	490
	491	sdi->status = SR_ST_STOPPING;
aeaad0b0 DE	492
	493	return SR_OK;
	494	}
	495
	496	SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
	497	.name = "sysclk-lwla",
5874e88d	498	.longname = "SysClk LWLA series",
aeaad0b0 DE	499	.api_version = 1,
	500	.init = init,
	501	.cleanup = cleanup,
	502	.scan = scan,
	503	.dev_list = dev_list,
	504	.dev_clear = dev_clear,
	505	.config_get = config_get,
	506	.config_set = config_set,
	507	.config_list = config_list,
	508	.dev_open = dev_open,
	509	.dev_close = dev_close,
	510	.dev_acquisition_start = dev_acquisition_start,
	511	.dev_acquisition_stop = dev_acquisition_stop,
	512	.priv = NULL,
	513	};