[libsigrok.git] / src / hardware / kingst-la2016 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * 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/>.
 */

/*
 * This driver implementation initially was derived from the
 * src/hardware/saleae-logic16/ source code.
 */

#include <config.h>

#include <libsigrok/libsigrok.h>
#include <string.h>

#include "libsigrok-internal.h"
#include "protocol.h"

/*
 * Default device configuration. Must be applicable to any of the
 * supported devices (no model specific default values yet). Specific
 * firmware implementation details unfortunately won't let us detect
 * and keep using previously configured values.
 */
#define LA2016_DFLT_SAMPLERATE	SR_MHZ(100)
#define LA2016_DFLT_SAMPLEDEPTH	(5 * 1000 * 1000)
#define LA2016_DFLT_CAPT_RATIO	5 /* Capture ratio, in percent. */

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
};

static const uint32_t drvopts[] = {
	SR_CONF_LOGIC_ANALYZER,
};

static const uint32_t devopts[] = {
	/* TODO: SR_CONF_CONTINUOUS, */
	SR_CONF_CONN | SR_CONF_GET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
	SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
};

static const int32_t trigger_matches[] = {
	SR_TRIGGER_ZERO,
	SR_TRIGGER_ONE,
	SR_TRIGGER_RISING,
	SR_TRIGGER_FALLING,
};

static const char *channel_names[] = {
	"CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
	"CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
};

/*
 * The hardware uses a (model dependent) 100/200/500MHz base clock and
 * a 16bit divider (common across all models). The range from 10kHz to
 * 100/200/500MHz should be applicable to all devices. High rates may
 * suffer from coarse resolution (e.g. in the "500MHz div 2" case) and
 * may not provide the desired 1/2/5 steps. This is not an issue now,
 * the 500MHz model is not supported yet by this driver.
 */

static const uint64_t samplerates_la2016[] = {
	SR_KHZ(10),
	SR_KHZ(20),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(200),
	SR_KHZ(500),
	SR_MHZ(1),
	SR_MHZ(2),
	SR_MHZ(4),
	SR_MHZ(5),
	SR_MHZ(8),
	SR_MHZ(10),
	SR_MHZ(20),
	SR_MHZ(50),
	SR_MHZ(100),
	SR_MHZ(200),
};

static const uint64_t samplerates_la1016[] = {
	SR_KHZ(10),
	SR_KHZ(20),
	SR_KHZ(50),
	SR_KHZ(100),
	SR_KHZ(200),
	SR_KHZ(500),
	SR_MHZ(1),
	SR_MHZ(2),
	SR_MHZ(4),
	SR_MHZ(5),
	SR_MHZ(8),
	SR_MHZ(10),
	SR_MHZ(20),
	SR_MHZ(50),
	SR_MHZ(100),
};

static const float logic_threshold_value[] = {
	1.58,
	2.5,
	1.165,
	1.5,
	1.25,
	0.9,
	0.75,
	0.60,
	0.45,
};

static const char *logic_threshold[] = {
	"TTL 5V",
	"CMOS 5V",
	"CMOS 3.3V",
	"CMOS 3.0V",
	"CMOS 2.5V",
	"CMOS 1.8V",
	"CMOS 1.5V",
	"CMOS 1.2V",
	"CMOS 0.9V",
	"USER",
};

#define LOGIC_THRESHOLD_IDX_USER	(ARRAY_SIZE(logic_threshold) - 1)

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct drv_context *drvc;
	struct sr_context *ctx;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_usb_dev_inst *usb;
	struct sr_config *src;
	GSList *l;
	GSList *devices;
	GSList *conn_devices;
	struct libusb_device_descriptor des;
	libusb_device **devlist, *dev;
	size_t dev_count, dev_idx, ch_idx;
	uint8_t bus, addr;
	const char *conn;
	char conn_id[64];
	uint64_t fw_uploaded;
	int ret;

	drvc = di->context;
	ctx = drvc->sr_ctx;;

	conn = NULL;
	for (l = options; l; l = l->next) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_CONN:
			conn = g_variant_get_string(src->data, NULL);
			break;
		}
	}
	if (conn)
		conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
	else
		conn_devices = NULL;

	/* Find all LA2016 devices, optionally upload firmware to them. */
	devices = NULL;
	ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
	if (ret < 0) {
		sr_err("Cannot get device list: %s.", libusb_error_name(ret));
		return devices;
	}
	dev_count = ret;
	for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
		dev = devlist[dev_idx];
		bus = libusb_get_bus_number(dev);
		addr = libusb_get_device_address(dev);
		if (conn) {
			usb = NULL;
			for (l = conn_devices; l; l = l->next) {
				usb = l->data;
				if (usb->bus == bus && usb->address == addr)
					break;
			}
			if (!l) {
				/*
				 * A connection parameter was specified and
				 * this device does not match the filter.
				 */
				continue;
			}
		}

		libusb_get_device_descriptor(dev, &des);
		ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
		if (ret < 0)
			continue;
		if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
			continue;

		/* USB identification matches, a device was found. */
		sr_dbg("Found a device (USB identification).");
		sdi = g_malloc0(sizeof(*sdi));
		sdi->status = SR_ST_INITIALIZING;
		sdi->connection_id = g_strdup(conn_id);

		fw_uploaded = 0;
		if (des.iProduct != LA2016_IPRODUCT_INDEX) {
			sr_info("Device at '%s' has no firmware loaded.",
				conn_id);

			ret = la2016_upload_firmware(ctx, dev, des.idProduct);
			if (ret != SR_OK) {
				sr_err("MCU firmware upload failed.");
				g_free(sdi->connection_id);
				g_free(sdi);
				continue;
			}
			fw_uploaded = g_get_monotonic_time();
			/* Will re-enumerate. Mark as "unknown address yet". */
			addr = 0xff;
		}

		sdi->vendor = g_strdup("Kingst");
		sdi->model = g_strdup("LA2016");

		for (ch_idx = 0; ch_idx < ARRAY_SIZE(channel_names); ch_idx++) {
			sr_channel_new(sdi, ch_idx, SR_CHANNEL_LOGIC,
				TRUE, channel_names[ch_idx]);
		}

		devices = g_slist_append(devices, sdi);

		devc = g_malloc0(sizeof(*devc));
		sdi->priv = devc;
		devc->fw_uploaded = fw_uploaded;
		sr_sw_limits_init(&devc->sw_limits);
		devc->sw_limits.limit_samples = LA2016_DFLT_SAMPLEDEPTH;
		devc->capture_ratio = LA2016_DFLT_CAPT_RATIO;
		devc->cur_samplerate = LA2016_DFLT_SAMPLERATE;
		devc->threshold_voltage_idx = 0;
		devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];

		sdi->status = SR_ST_INACTIVE;
		sdi->inst_type = SR_INST_USB;

		sdi->conn = sr_usb_dev_inst_new(bus, addr, NULL);
	}
	libusb_free_device_list(devlist, 1);
	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);

	return std_scan_complete(di, devices);
}

static int la2016_dev_open(struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di;
	struct drv_context *drvc;
	struct sr_context *ctx;
	libusb_device **devlist, *dev;
	struct sr_usb_dev_inst *usb;
	struct libusb_device_descriptor des;
	int ret;
	size_t device_count, dev_idx;
	gboolean check_conn;
	char conn_id[64];

	di = sdi->driver;
	drvc = di->context;
	ctx = drvc->sr_ctx;;
	usb = sdi->conn;
	ret = SR_ERR;

	ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
	if (ret < 0) {
		sr_err("Cannot get device list: %s.", libusb_error_name(ret));
		return SR_ERR;
	}
	device_count = ret;
	if (!device_count) {
		sr_warn("Device list is empty. Cannot open.");
		return SR_ERR;
	}
	for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
		dev = devlist[dev_idx];
		libusb_get_device_descriptor(dev, &des);

		if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
			continue;
		if (des.iProduct != LA2016_IPRODUCT_INDEX)
			continue;

		check_conn = sdi->status == SR_ST_INITIALIZING;
		check_conn |= sdi->status == SR_ST_INACTIVE;
		if (check_conn) {
			/* Check physical USB bus/port address. */
			ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
			if (ret < 0)
				continue;
			if (strcmp(sdi->connection_id, conn_id) != 0) {
				/* Not the device we looked up before. */
				continue;
			}
		}

		ret = libusb_open(dev, &usb->devhdl);
		if (ret != 0) {
			sr_err("Cannot open device: %s.",
				libusb_error_name(ret));
			ret = SR_ERR_IO;
			break;
		}

		if (usb->address == 0xff) {
			/*
			 * First encounter after firmware upload.
			 * Grab current address after enumeration.
			 */
			usb->address = libusb_get_device_address(dev);
		}

		ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
		if (ret == LIBUSB_ERROR_BUSY) {
			sr_err("Cannot claim USB interface. Another program or driver using it?");
			ret = SR_ERR;
			break;
		} else if (ret == LIBUSB_ERROR_NO_DEVICE) {
			sr_err("Device has been disconnected.");
			ret = SR_ERR;
			break;
		} else if (ret != 0) {
			sr_err("Cannot claim USB interface: %s.",
				libusb_error_name(ret));
			ret = SR_ERR;
			break;
		}

		if ((ret = la2016_init_device(sdi)) != SR_OK) {
			sr_err("Cannot initialize device.");
			break;
		}

		sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.",
			usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
		ret = SR_OK;
		break;
	}
	libusb_free_device_list(devlist, 1);

	if (ret != SR_OK) {
		if (usb->devhdl) {
			libusb_release_interface(usb->devhdl, USB_INTERFACE);
			libusb_close(usb->devhdl);
			usb->devhdl = NULL;
		}
		return ret;
	}

	return SR_OK;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	uint64_t reset_done, now, elapsed_ms;
	int ret;

	devc = sdi->priv;

	/*
	 * When the sigrok driver recently has uploaded MCU firmware,
	 * then wait for the FX2 to re-enumerate. Allow the USB device
	 * to vanish before it reappears. Timeouts are rough estimates
	 * after all, the imprecise time of the last check (potentially
	 * executes after the total check period) simplifies code paths
	 * with optional diagnostics. And increases the probability of
	 * successfully detecting "late/slow" devices.
	 */
	if (devc->fw_uploaded) {
		sr_info("Waiting for device to reset after firmware upload.");
		now = g_get_monotonic_time();
		reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
		if (now < reset_done)
			g_usleep(reset_done - now);
		do {
			now = g_get_monotonic_time();
			elapsed_ms = (now - devc->fw_uploaded) / 1000;
			sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
			ret = la2016_dev_open(sdi);
			if (ret == SR_OK) {
				devc->fw_uploaded = 0;
				break;
			}
			g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
		} while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
		if (ret != SR_OK) {
			sr_err("Device failed to re-enumerate.");
			return ret;
		}
		sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
	} else {
		ret = la2016_dev_open(sdi);
	}

	if (ret != SR_OK) {
		sr_err("Cannot open device.");
		return ret;
	}

	return SR_OK;
}

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

	usb = sdi->conn;

	if (!usb->devhdl)
		return SR_ERR_BUG;

	la2016_deinit_device(sdi);

	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
		usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	libusb_close(usb->devhdl);
	usb->devhdl = NULL;

	return SR_OK;
}

static int config_get(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	double rounded;
	const char *label;

	(void)cg;

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

	switch (key) {
	case SR_CONF_CONN:
		if (!sdi->conn)
			return SR_ERR_ARG;
		usb = sdi->conn;
		if (usb->address == 0xff) {
			/*
			 * Device still needs to re-enumerate after firmware
			 * upload, so we don't know its (future) address.
			 */
			return SR_ERR;
		}
		*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_get(&devc->sw_limits, key, data);
	case SR_CONF_CAPTURE_RATIO:
		*data = g_variant_new_uint64(devc->capture_ratio);
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
		*data = std_gvar_tuple_double(rounded, rounded + 0.1);
		return SR_OK;
	case SR_CONF_LOGIC_THRESHOLD:
		label = logic_threshold[devc->threshold_voltage_idx];
		*data = g_variant_new_string(label);
		break;
	case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
		*data = g_variant_new_double(devc->threshold_voltage);
		break;

	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	double low, high;
	int idx;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		devc->cur_samplerate = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_set(&devc->sw_limits, key, data);
	case SR_CONF_CAPTURE_RATIO:
		devc->capture_ratio = g_variant_get_uint64(data);
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		g_variant_get(data, "(dd)", &low, &high);
		devc->threshold_voltage = (low + high) / 2.0;
		devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_USER;
		break;
	case SR_CONF_LOGIC_THRESHOLD: {
		idx = std_str_idx(data, ARRAY_AND_SIZE(logic_threshold));
		if (idx < 0)
			return SR_ERR_ARG;
		if (idx != LOGIC_THRESHOLD_IDX_USER) {
			devc->threshold_voltage = logic_threshold_value[idx];
		}
		devc->threshold_voltage_idx = idx;
		break;
	}
	case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
		devc->threshold_voltage = g_variant_get_double(data);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	devc = sdi ? sdi->priv : NULL;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg,
			scanopts, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		if (!sdi)
			return SR_ERR_ARG;
		if (devc->max_samplerate == SR_MHZ(200)) {
			*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_la2016));
		} else {
			*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_la1016));
		}
		break;
	case SR_CONF_LIMIT_SAMPLES:
		*data = std_gvar_tuple_u64(LA2016_NUM_SAMPLES_MIN,
			LA2016_NUM_SAMPLES_MAX);
		break;
	case SR_CONF_VOLTAGE_THRESHOLD:
		*data = std_gvar_min_max_step_thresholds(
			LA2016_THR_VOLTAGE_MIN,
			LA2016_THR_VOLTAGE_MAX, 0.1);
		break;
	case SR_CONF_TRIGGER_MATCH:
		*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
		break;
	case SR_CONF_LOGIC_THRESHOLD:
		*data = g_variant_new_strv(ARRAY_AND_SIZE(logic_threshold));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di;
	struct drv_context *drvc;
	struct sr_context *ctx;
	struct dev_context *devc;
	int ret;

	di = sdi->driver;
	drvc = di->context;
	ctx = drvc->sr_ctx;;
	devc = sdi->priv;

	if (!devc->feed_queue) {
		devc->feed_queue = feed_queue_logic_alloc(sdi,
			LA2016_CONVBUFFER_SIZE, sizeof(uint16_t));
		if (!devc->feed_queue) {
			sr_err("Cannot allocate buffer for session feed.");
			return SR_ERR_MALLOC;
		}
	}

	sr_sw_limits_acquisition_start(&devc->sw_limits);

	ret = la2016_setup_acquisition(sdi);
	if (ret != SR_OK) {
		feed_queue_logic_free(devc->feed_queue);
		devc->feed_queue = NULL;
		return ret;
	}

	ret = la2016_start_acquisition(sdi);
	if (ret != SR_OK) {
		la2016_abort_acquisition(sdi);
		feed_queue_logic_free(devc->feed_queue);
		devc->feed_queue = NULL;
		return ret;
	}

	devc->completion_seen = FALSE;
	usb_source_add(sdi->session, ctx, 50,
		la2016_receive_data, (void *)sdi);

	std_session_send_df_header(sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	int ret;

	ret = la2016_abort_acquisition(sdi);

	return ret;
}

static struct sr_dev_driver kingst_la2016_driver_info = {
	.name = "kingst-la2016",
	.longname = "Kingst LA2016",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = std_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,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(kingst_la2016_driver_info);
Commit	Line	Data
f2cd2deb FS	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
	5	* Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
	6	* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
	7	* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
	8	*
	9	* This program is free software: you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation, either version 3 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	21	*/
	22
96dc954e GS	23	/*
	24	* This driver implementation initially was derived from the
	25	* src/hardware/saleae-logic16/ source code.
	26	*/
f2cd2deb FS	27
f2cd2deb FS	28	#include <config.h>
a7740b06	29
a7740b06	30	#include <libsigrok/libsigrok.h>
f2cd2deb	31	#include <string.h>
a7740b06	32
f2cd2deb FS	33	#include "libsigrok-internal.h"
	34	#include "protocol.h"
	35
a38f0f5e GS	36	/*
	37	* Default device configuration. Must be applicable to any of the
	38	* supported devices (no model specific default values yet). Specific
	39	* firmware implementation details unfortunately won't let us detect
	40	* and keep using previously configured values.
	41	*/
	42	#define LA2016_DFLT_SAMPLERATE SR_MHZ(100)
	43	#define LA2016_DFLT_SAMPLEDEPTH (5 * 1000 * 1000)
	44	#define LA2016_DFLT_CAPT_RATIO 5 /* Capture ratio, in percent. */
	45
f2cd2deb FS	46	static const uint32_t scanopts[] = {
	47	SR_CONF_CONN,
	48	};
	49
	50	static const uint32_t drvopts[] = {
	51	SR_CONF_LOGIC_ANALYZER,
	52	};
	53
	54	static const uint32_t devopts[] = {
	55	/* TODO: SR_CONF_CONTINUOUS, */
	56	SR_CONF_CONN \| SR_CONF_GET,
	57	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
a38f0f5e GS	58	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
a38f0f5e GS	59	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
f2cd2deb FS	60	SR_CONF_VOLTAGE_THRESHOLD \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	61	SR_CONF_LOGIC_THRESHOLD \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	62	SR_CONF_LOGIC_THRESHOLD_CUSTOM \| SR_CONF_GET \| SR_CONF_SET,
	63	SR_CONF_TRIGGER_MATCH \| SR_CONF_LIST,
	64	SR_CONF_CAPTURE_RATIO \| SR_CONF_GET \| SR_CONF_SET,
	65	};
	66
	67	static const int32_t trigger_matches[] = {
	68	SR_TRIGGER_ZERO,
	69	SR_TRIGGER_ONE,
	70	SR_TRIGGER_RISING,
	71	SR_TRIGGER_FALLING,
	72	};
	73
	74	static const char *channel_names[] = {
da25c287 GS	75	"CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
da25c287 GS	76	"CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
f2cd2deb FS	77	};
f2cd2deb FS	78
ea436ba7 GS	79	/*
	80	* The hardware uses a (model dependent) 100/200/500MHz base clock and
	81	* a 16bit divider (common across all models). The range from 10kHz to
	82	* 100/200/500MHz should be applicable to all devices. High rates may
	83	* suffer from coarse resolution (e.g. in the "500MHz div 2" case) and
	84	* may not provide the desired 1/2/5 steps. This is not an issue now,
	85	* the 500MHz model is not supported yet by this driver.
	86	*/
	87
8b172e78	88	static const uint64_t samplerates_la2016[] = {
ea436ba7	89	SR_KHZ(10),
f2cd2deb FS	90	SR_KHZ(20),
	91	SR_KHZ(50),
	92	SR_KHZ(100),
	93	SR_KHZ(200),
	94	SR_KHZ(500),
	95	SR_MHZ(1),
	96	SR_MHZ(2),
	97	SR_MHZ(4),
	98	SR_MHZ(5),
	99	SR_MHZ(8),
	100	SR_MHZ(10),
	101	SR_MHZ(20),
	102	SR_MHZ(50),
	103	SR_MHZ(100),
	104	SR_MHZ(200),
	105	};
	106
8b172e78	107	static const uint64_t samplerates_la1016[] = {
ea436ba7	108	SR_KHZ(10),
8b172e78 KG	109	SR_KHZ(20),
	110	SR_KHZ(50),
	111	SR_KHZ(100),
	112	SR_KHZ(200),
	113	SR_KHZ(500),
	114	SR_MHZ(1),
	115	SR_MHZ(2),
	116	SR_MHZ(4),
	117	SR_MHZ(5),
	118	SR_MHZ(8),
	119	SR_MHZ(10),
	120	SR_MHZ(20),
	121	SR_MHZ(50),
	122	SR_MHZ(100),
	123	};
	124
f2cd2deb FS	125	static const float logic_threshold_value[] = {
	126	1.58,
	127	2.5,
	128	1.165,
	129	1.5,
	130	1.25,
	131	0.9,
	132	0.75,
	133	0.60,
	134	0.45,
	135	};
	136
	137	static const char *logic_threshold[] = {
	138	"TTL 5V",
	139	"CMOS 5V",
	140	"CMOS 3.3V",
	141	"CMOS 3.0V",
	142	"CMOS 2.5V",
	143	"CMOS 1.8V",
	144	"CMOS 1.5V",
	145	"CMOS 1.2V",
	146	"CMOS 0.9V",
	147	"USER",
	148	};
	149
da2cb50d	150	#define LOGIC_THRESHOLD_IDX_USER (ARRAY_SIZE(logic_threshold) - 1)
f2cd2deb	151
f2cd2deb FS	152	static GSList scan(struct sr_dev_driver di, GSList *options)
	153	{
	154	struct drv_context *drvc;
520a20e9	155	struct sr_context *ctx;
f2cd2deb FS	156	struct dev_context *devc;
	157	struct sr_dev_inst *sdi;
	158	struct sr_usb_dev_inst *usb;
	159	struct sr_config *src;
	160	GSList *l;
	161	GSList *devices;
	162	GSList *conn_devices;
	163	struct libusb_device_descriptor des;
520a20e9 GS	164	libusb_device *devlist, dev;
	165	size_t dev_count, dev_idx, ch_idx;
	166	uint8_t bus, addr;
f2cd2deb	167	const char *conn;
520a20e9	168	char conn_id[64];
22cb067a	169	uint64_t fw_uploaded;
520a20e9	170	int ret;
f2cd2deb FS	171
f2cd2deb FS	172	drvc = di->context;
520a20e9	173	ctx = drvc->sr_ctx;;
f2cd2deb FS	174
	175	conn = NULL;
	176	for (l = options; l; l = l->next) {
	177	src = l->data;
	178	switch (src->key) {
	179	case SR_CONF_CONN:
	180	conn = g_variant_get_string(src->data, NULL);
	181	break;
	182	}
	183	}
	184	if (conn)
520a20e9	185	conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
f2cd2deb FS	186	else
	187	conn_devices = NULL;
	188
96dc954e	189	/* Find all LA2016 devices, optionally upload firmware to them. */
f2cd2deb	190	devices = NULL;
520a20e9 GS	191	ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
	192	if (ret < 0) {
	193	sr_err("Cannot get device list: %s.", libusb_error_name(ret));
	194	return devices;
	195	}
	196	dev_count = ret;
	197	for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
	198	dev = devlist[dev_idx];
	199	bus = libusb_get_bus_number(dev);
	200	addr = libusb_get_device_address(dev);
f2cd2deb FS	201	if (conn) {
	202	usb = NULL;
	203	for (l = conn_devices; l; l = l->next) {
	204	usb = l->data;
520a20e9	205	if (usb->bus == bus && usb->address == addr)
f2cd2deb FS	206	break;
f2cd2deb FS	207	}
955ab604	208	if (!l) {
96dc954e GS	209	/*
	210	* A connection parameter was specified and
	211	* this device does not match the filter.
	212	*/
f2cd2deb	213	continue;
955ab604	214	}
f2cd2deb FS	215	}
f2cd2deb FS	216
520a20e9 GS	217	libusb_get_device_descriptor(dev, &des);
	218	ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
	219	if (ret < 0)
f2cd2deb	220	continue;
f2cd2deb FS	221	if (des.idVendor != LA2016_VID \|\| des.idProduct != LA2016_PID)
	222	continue;
	223
96dc954e	224	/* USB identification matches, a device was found. */
cf057ac4	225	sr_dbg("Found a device (USB identification).");
520a20e9	226	sdi = g_malloc0(sizeof(*sdi));
f2cd2deb	227	sdi->status = SR_ST_INITIALIZING;
520a20e9	228	sdi->connection_id = g_strdup(conn_id);
f2cd2deb	229
22cb067a	230	fw_uploaded = 0;
852c7d14	231	if (des.iProduct != LA2016_IPRODUCT_INDEX) {
520a20e9 GS	232	sr_info("Device at '%s' has no firmware loaded.",
520a20e9 GS	233	conn_id);
f2cd2deb	234
520a20e9 GS	235	ret = la2016_upload_firmware(ctx, dev, des.idProduct);
520a20e9 GS	236	if (ret != SR_OK) {
91f73872	237	sr_err("MCU firmware upload failed.");
f2cd2deb FS	238	g_free(sdi->connection_id);
	239	g_free(sdi);
	240	continue;
	241	}
22cb067a	242	fw_uploaded = g_get_monotonic_time();
96dc954e	243	/* Will re-enumerate. Mark as "unknown address yet". */
520a20e9	244	addr = 0xff;
f2cd2deb FS	245	}
	246
	247	sdi->vendor = g_strdup("Kingst");
	248	sdi->model = g_strdup("LA2016");
	249
520a20e9 GS	250	for (ch_idx = 0; ch_idx < ARRAY_SIZE(channel_names); ch_idx++) {
	251	sr_channel_new(sdi, ch_idx, SR_CHANNEL_LOGIC,
	252	TRUE, channel_names[ch_idx]);
	253	}
f2cd2deb FS	254
	255	devices = g_slist_append(devices, sdi);
	256
520a20e9	257	devc = g_malloc0(sizeof(*devc));
f2cd2deb	258	sdi->priv = devc;
22cb067a	259	devc->fw_uploaded = fw_uploaded;
a38f0f5e GS	260	sr_sw_limits_init(&devc->sw_limits);
	261	devc->sw_limits.limit_samples = LA2016_DFLT_SAMPLEDEPTH;
	262	devc->capture_ratio = LA2016_DFLT_CAPT_RATIO;
	263	devc->cur_samplerate = LA2016_DFLT_SAMPLERATE;
f2cd2deb FS	264	devc->threshold_voltage_idx = 0;
	265	devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];
	266
	267	sdi->status = SR_ST_INACTIVE;
	268	sdi->inst_type = SR_INST_USB;
	269
520a20e9	270	sdi->conn = sr_usb_dev_inst_new(bus, addr, NULL);
f2cd2deb FS	271	}
	272	libusb_free_device_list(devlist, 1);
	273	g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
	274
	275	return std_scan_complete(di, devices);
	276	}
	277
	278	static int la2016_dev_open(struct sr_dev_inst *sdi)
	279	{
	280	struct sr_dev_driver *di;
520a20e9 GS	281	struct drv_context *drvc;
	282	struct sr_context *ctx;
	283	libusb_device *devlist, dev;
f2cd2deb FS	284	struct sr_usb_dev_inst *usb;
f2cd2deb FS	285	struct libusb_device_descriptor des;
520a20e9 GS	286	int ret;
	287	size_t device_count, dev_idx;
	288	gboolean check_conn;
	289	char conn_id[64];
f2cd2deb FS	290
	291	di = sdi->driver;
	292	drvc = di->context;
520a20e9	293	ctx = drvc->sr_ctx;;
f2cd2deb FS	294	usb = sdi->conn;
	295	ret = SR_ERR;
	296
520a20e9 GS	297	ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
	298	if (ret < 0) {
	299	sr_err("Cannot get device list: %s.", libusb_error_name(ret));
f2cd2deb FS	300	return SR_ERR;
f2cd2deb FS	301	}
520a20e9 GS	302	device_count = ret;
	303	if (!device_count) {
	304	sr_warn("Device list is empty. Cannot open.");
	305	return SR_ERR;
	306	}
	307	for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
	308	dev = devlist[dev_idx];
	309	libusb_get_device_descriptor(dev, &des);
f2cd2deb	310
852c7d14 GS	311	if (des.idVendor != LA2016_VID \|\| des.idProduct != LA2016_PID)
	312	continue;
	313	if (des.iProduct != LA2016_IPRODUCT_INDEX)
f2cd2deb FS	314	continue;
f2cd2deb FS	315
520a20e9 GS	316	check_conn = sdi->status == SR_ST_INITIALIZING;
	317	check_conn \|= sdi->status == SR_ST_INACTIVE;
	318	if (check_conn) {
96dc954e	319	/* Check physical USB bus/port address. */
520a20e9 GS	320	ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
520a20e9 GS	321	if (ret < 0)
f2cd2deb	322	continue;
520a20e9	323	if (strcmp(sdi->connection_id, conn_id) != 0) {
96dc954e	324	/* Not the device we looked up before. */
f2cd2deb	325	continue;
96dc954e	326	}
f2cd2deb FS	327	}
f2cd2deb FS	328
520a20e9 GS	329	ret = libusb_open(dev, &usb->devhdl);
	330	if (ret != 0) {
	331	sr_err("Cannot open device: %s.",
	332	libusb_error_name(ret));
	333	ret = SR_ERR_IO;
f2cd2deb FS	334	break;
	335	}
	336
520a20e9 GS	337	if (usb->address == 0xff) {
	338	/*
	339	* First encounter after firmware upload.
	340	* Grab current address after enumeration.
	341	*/
	342	usb->address = libusb_get_device_address(dev);
	343	}
	344
f2cd2deb FS	345	ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
f2cd2deb FS	346	if (ret == LIBUSB_ERROR_BUSY) {
91f73872	347	sr_err("Cannot claim USB interface. Another program or driver using it?");
f2cd2deb FS	348	ret = SR_ERR;
	349	break;
	350	} else if (ret == LIBUSB_ERROR_NO_DEVICE) {
	351	sr_err("Device has been disconnected.");
	352	ret = SR_ERR;
	353	break;
	354	} else if (ret != 0) {
520a20e9 GS	355	sr_err("Cannot claim USB interface: %s.",
520a20e9 GS	356	libusb_error_name(ret));
f2cd2deb FS	357	ret = SR_ERR;
	358	break;
	359	}
	360
	361	if ((ret = la2016_init_device(sdi)) != SR_OK) {
91f73872	362	sr_err("Cannot initialize device.");
f2cd2deb FS	363	break;
	364	}
	365
	366	sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.",
	367	usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
f2cd2deb	368	ret = SR_OK;
f2cd2deb FS	369	break;
f2cd2deb FS	370	}
f2cd2deb FS	371	libusb_free_device_list(devlist, 1);
	372
	373	if (ret != SR_OK) {
	374	if (usb->devhdl) {
	375	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	376	libusb_close(usb->devhdl);
	377	usb->devhdl = NULL;
	378	}
520a20e9	379	return ret;
f2cd2deb FS	380	}
	381
	382	return SR_OK;
	383	}
	384
	385	static int dev_open(struct sr_dev_inst *sdi)
	386	{
	387	struct dev_context *devc;
22cb067a	388	uint64_t reset_done, now, elapsed_ms;
f2cd2deb FS	389	int ret;
	390
	391	devc = sdi->priv;
	392
	393	/*
22cb067a GS	394	* When the sigrok driver recently has uploaded MCU firmware,
	395	* then wait for the FX2 to re-enumerate. Allow the USB device
	396	* to vanish before it reappears. Timeouts are rough estimates
	397	* after all, the imprecise time of the last check (potentially
	398	* executes after the total check period) simplifies code paths
	399	* with optional diagnostics. And increases the probability of
	400	* successfully detecting "late/slow" devices.
f2cd2deb	401	*/
22cb067a	402	if (devc->fw_uploaded) {
f2cd2deb	403	sr_info("Waiting for device to reset after firmware upload.");
f2cd2deb	404	now = g_get_monotonic_time();
22cb067a GS	405	reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
22cb067a GS	406	if (now < reset_done)
f2cd2deb	407	g_usleep(reset_done - now);
22cb067a GS	408	do {
	409	now = g_get_monotonic_time();
	410	elapsed_ms = (now - devc->fw_uploaded) / 1000;
	411	sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
	412	ret = la2016_dev_open(sdi);
	413	if (ret == SR_OK) {
	414	devc->fw_uploaded = 0;
f2cd2deb	415	break;
22cb067a GS	416	}
	417	g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
	418	} while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
f2cd2deb FS	419	if (ret != SR_OK) {
f2cd2deb FS	420	sr_err("Device failed to re-enumerate.");
520a20e9	421	return ret;
f2cd2deb	422	}
22cb067a	423	sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
955ab604	424	} else {
f2cd2deb	425	ret = la2016_dev_open(sdi);
955ab604	426	}
f2cd2deb FS	427
f2cd2deb FS	428	if (ret != SR_OK) {
91f73872	429	sr_err("Cannot open device.");
520a20e9	430	return ret;
f2cd2deb FS	431	}
	432
	433	return SR_OK;
	434	}
	435
	436	static int dev_close(struct sr_dev_inst *sdi)
	437	{
	438	struct sr_usb_dev_inst *usb;
	439
	440	usb = sdi->conn;
	441
	442	if (!usb->devhdl)
	443	return SR_ERR_BUG;
	444
	445	la2016_deinit_device(sdi);
	446
	447	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
	448	usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
	449	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	450	libusb_close(usb->devhdl);
	451	usb->devhdl = NULL;
	452
	453	return SR_OK;
	454	}
	455
955ab604 GS	456	static int config_get(uint32_t key, GVariant **data,
955ab604 GS	457	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
f2cd2deb FS	458	{
	459	struct dev_context *devc;
	460	struct sr_usb_dev_inst *usb;
	461	double rounded;
da2cb50d	462	const char *label;
f2cd2deb FS	463
	464	(void)cg;
	465
	466	if (!sdi)
	467	return SR_ERR_ARG;
	468	devc = sdi->priv;
	469
	470	switch (key) {
	471	case SR_CONF_CONN:
	472	if (!sdi->conn)
	473	return SR_ERR_ARG;
	474	usb = sdi->conn;
96dc954e GS	475	if (usb->address == 0xff) {
	476	/*
	477	* Device still needs to re-enumerate after firmware
	478	* upload, so we don't know its (future) address.
	479	*/
f2cd2deb	480	return SR_ERR;
955ab604	481	}
f2cd2deb FS	482	*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
	483	break;
	484	case SR_CONF_SAMPLERATE:
	485	*data = g_variant_new_uint64(devc->cur_samplerate);
	486	break;
	487	case SR_CONF_LIMIT_SAMPLES:
a38f0f5e GS	488	case SR_CONF_LIMIT_MSEC:
a38f0f5e GS	489	return sr_sw_limits_config_get(&devc->sw_limits, key, data);
f2cd2deb FS	490	case SR_CONF_CAPTURE_RATIO:
	491	*data = g_variant_new_uint64(devc->capture_ratio);
	492	break;
	493	case SR_CONF_VOLTAGE_THRESHOLD:
	494	rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
	495	*data = std_gvar_tuple_double(rounded, rounded + 0.1);
	496	return SR_OK;
	497	case SR_CONF_LOGIC_THRESHOLD:
da2cb50d GS	498	label = logic_threshold[devc->threshold_voltage_idx];
da2cb50d GS	499	*data = g_variant_new_string(label);
f2cd2deb FS	500	break;
	501	case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
	502	*data = g_variant_new_double(devc->threshold_voltage);
	503	break;
955ab604	504
f2cd2deb FS	505	default:
	506	return SR_ERR_NA;
	507	}
	508
	509	return SR_OK;
	510	}
	511
955ab604 GS	512	static int config_set(uint32_t key, GVariant *data,
955ab604 GS	513	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
f2cd2deb FS	514	{
	515	struct dev_context *devc;
	516	double low, high;
	517	int idx;
	518
	519	(void)cg;
	520
	521	devc = sdi->priv;
	522
	523	switch (key) {
	524	case SR_CONF_SAMPLERATE:
	525	devc->cur_samplerate = g_variant_get_uint64(data);
	526	break;
	527	case SR_CONF_LIMIT_SAMPLES:
a38f0f5e GS	528	case SR_CONF_LIMIT_MSEC:
a38f0f5e GS	529	return sr_sw_limits_config_set(&devc->sw_limits, key, data);
f2cd2deb FS	530	case SR_CONF_CAPTURE_RATIO:
	531	devc->capture_ratio = g_variant_get_uint64(data);
	532	break;
	533	case SR_CONF_VOLTAGE_THRESHOLD:
	534	g_variant_get(data, "(dd)", &low, &high);
	535	devc->threshold_voltage = (low + high) / 2.0;
da2cb50d	536	devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_USER;
f2cd2deb FS	537	break;
f2cd2deb FS	538	case SR_CONF_LOGIC_THRESHOLD: {
411ad77c GS	539	idx = std_str_idx(data, ARRAY_AND_SIZE(logic_threshold));
411ad77c GS	540	if (idx < 0)
f2cd2deb	541	return SR_ERR_ARG;
da2cb50d	542	if (idx != LOGIC_THRESHOLD_IDX_USER) {
f2cd2deb FS	543	devc->threshold_voltage = logic_threshold_value[idx];
	544	}
	545	devc->threshold_voltage_idx = idx;
	546	break;
	547	}
	548	case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
	549	devc->threshold_voltage = g_variant_get_double(data);
	550	break;
	551	default:
	552	return SR_ERR_NA;
	553	}
	554
	555	return SR_OK;
	556	}
	557
955ab604 GS	558	static int config_list(uint32_t key, GVariant **data,
955ab604 GS	559	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
f2cd2deb	560	{
8b172e78 KG	561	struct dev_context *devc;
8b172e78 KG	562
a38f0f5e GS	563	devc = sdi ? sdi->priv : NULL;
a38f0f5e GS	564
f2cd2deb FS	565	switch (key) {
	566	case SR_CONF_SCAN_OPTIONS:
	567	case SR_CONF_DEVICE_OPTIONS:
411ad77c GS	568	return STD_CONFIG_LIST(key, data, sdi, cg,
411ad77c GS	569	scanopts, drvopts, devopts);
f2cd2deb	570	case SR_CONF_SAMPLERATE:
fb28e72d MW	571	if (!sdi)
fb28e72d MW	572	return SR_ERR_ARG;
8b172e78 KG	573	if (devc->max_samplerate == SR_MHZ(200)) {
8b172e78 KG	574	*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_la2016));
1ed93110	575	} else {
8b172e78 KG	576	*data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_la1016));
8b172e78 KG	577	}
f2cd2deb FS	578	break;
f2cd2deb FS	579	case SR_CONF_LIMIT_SAMPLES:
411ad77c GS	580	*data = std_gvar_tuple_u64(LA2016_NUM_SAMPLES_MIN,
411ad77c GS	581	LA2016_NUM_SAMPLES_MAX);
f2cd2deb FS	582	break;
	583	case SR_CONF_VOLTAGE_THRESHOLD:
	584	*data = std_gvar_min_max_step_thresholds(
	585	LA2016_THR_VOLTAGE_MIN,
	586	LA2016_THR_VOLTAGE_MAX, 0.1);
	587	break;
	588	case SR_CONF_TRIGGER_MATCH:
	589	*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
	590	break;
	591	case SR_CONF_LOGIC_THRESHOLD:
da2cb50d	592	*data = g_variant_new_strv(ARRAY_AND_SIZE(logic_threshold));
f2cd2deb FS	593	break;
	594	default:
	595	return SR_ERR_NA;
	596	}
	597
	598	return SR_OK;
	599	}
	600
f2cd2deb FS	601	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	602	{
	603	struct sr_dev_driver *di;
	604	struct drv_context *drvc;
520a20e9	605	struct sr_context *ctx;
f2cd2deb FS	606	struct dev_context *devc;
	607	int ret;
	608
	609	di = sdi->driver;
	610	drvc = di->context;
520a20e9	611	ctx = drvc->sr_ctx;;
f2cd2deb FS	612	devc = sdi->priv;
f2cd2deb FS	613
a38f0f5e GS	614	if (!devc->feed_queue) {
	615	devc->feed_queue = feed_queue_logic_alloc(sdi,
	616	LA2016_CONVBUFFER_SIZE, sizeof(uint16_t));
	617	if (!devc->feed_queue) {
	618	sr_err("Cannot allocate buffer for session feed.");
	619	return SR_ERR_MALLOC;
	620	}
f2cd2deb FS	621	}
f2cd2deb FS	622
a38f0f5e GS	623	sr_sw_limits_acquisition_start(&devc->sw_limits);
a38f0f5e GS	624
411ad77c GS	625	ret = la2016_setup_acquisition(sdi);
411ad77c GS	626	if (ret != SR_OK) {
a38f0f5e GS	627	feed_queue_logic_free(devc->feed_queue);
a38f0f5e GS	628	devc->feed_queue = NULL;
f2cd2deb FS	629	return ret;
	630	}
	631
411ad77c GS	632	ret = la2016_start_acquisition(sdi);
411ad77c GS	633	if (ret != SR_OK) {
3ebc1cb2	634	la2016_abort_acquisition(sdi);
a38f0f5e GS	635	feed_queue_logic_free(devc->feed_queue);
a38f0f5e GS	636	devc->feed_queue = NULL;
f2cd2deb FS	637	return ret;
	638	}
	639
cf057ac4	640	devc->completion_seen = FALSE;
520a20e9	641	usb_source_add(sdi->session, ctx, 50,
388438e4	642	la2016_receive_data, (void *)sdi);
f2cd2deb FS	643
	644	std_session_send_df_header(sdi);
	645
	646	return SR_OK;
	647	}
	648
	649	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	650	{
	651	int ret;
	652
	653	ret = la2016_abort_acquisition(sdi);
f2cd2deb FS	654
	655	return ret;
	656	}
	657
	658	static struct sr_dev_driver kingst_la2016_driver_info = {
	659	.name = "kingst-la2016",
	660	.longname = "Kingst LA2016",
	661	.api_version = 1,
	662	.init = std_init,
	663	.cleanup = std_cleanup,
	664	.scan = scan,
	665	.dev_list = std_dev_list,
	666	.dev_clear = std_dev_clear,
	667	.config_get = config_get,
	668	.config_set = config_set,
	669	.config_list = config_list,
	670	.dev_open = dev_open,
	671	.dev_close = dev_close,
	672	.dev_acquisition_start = dev_acquisition_start,
	673	.dev_acquisition_stop = dev_acquisition_stop,
	674	.context = NULL,
	675	};
	676	SR_REGISTER_DEV_DRIVER(kingst_la2016_driver_info);