[libsigrok.git] / src / hardware / yokogawa-dlm / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 abraxa (Soeren Apel) <soeren@apelpie.net>
 * Based on the Hameg HMO driver by poljar (Damir Jelić) <poljarinho@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 <stdlib.h>
#include "protocol.h"

SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info;

static const char *MANUFACTURER_ID = "YOKOGAWA";
static const char *MANUFACTURER_NAME = "Yokogawa";

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

enum {
	CG_INVALID = -1,
	CG_NONE,
	CG_ANALOG,
	CG_DIGITAL,
};

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

static struct sr_dev_inst *probe_usbtmc_device(struct sr_scpi_dev_inst *scpi)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_scpi_hw_info *hw_info;
	char *model_name;
	int model_index;

	sdi = NULL;
	devc = NULL;
	hw_info = NULL;

	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
		sr_info("Couldn't get IDN response.");
		goto fail;
	}

	if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
		goto fail;

	if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
		goto fail;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_ACTIVE;
	sdi->vendor = g_strdup(MANUFACTURER_NAME);
	sdi->model = g_strdup(model_name);
	sdi->version = g_strdup(hw_info->firmware_version);

	sdi->serial_num = g_strdup(hw_info->serial_number);

	sr_scpi_hw_info_free(hw_info);
	hw_info = NULL;

	devc = g_malloc0(sizeof(struct dev_context));

	sdi->driver = &yokogawa_dlm_driver_info;
	sdi->priv = devc;
	sdi->inst_type = SR_INST_SCPI;
	sdi->conn = scpi;

	if (dlm_device_init(sdi, model_index) != SR_OK)
		goto fail;

	sr_scpi_close(sdi->conn);

	sdi->status = SR_ST_INACTIVE;
	return sdi;

fail:
	if (hw_info)
		sr_scpi_hw_info_free(hw_info);
	if (sdi)
		sr_dev_inst_free(sdi);
	g_free(devc);

	return NULL;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	return sr_scpi_scan(di->priv, options, probe_usbtmc_device);
}

static GSList *dev_list(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->priv))->instances;
}

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

	devc = priv;

	dlm_scope_state_destroy(devc->model_state);

	g_free(devc->analog_groups);
	g_free(devc->digital_groups);
	g_free(devc);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear(di, clear_helper);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
		return SR_ERR;

	if (dlm_scope_state_query(sdi) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	if (sdi->status == SR_ST_INACTIVE)
		return SR_OK;

	sr_scpi_close(sdi->conn);

	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(const struct sr_dev_driver *di)
{
	dev_clear(di);

	return SR_OK;
}

/**
 * Check which category a given channel group belongs to.
 *
 * @param devc Our internal device context.
 * @param cg   The channel group to check.
 *
 * @retval CG_NONE    cg is NULL
 * @retval CG_ANALOG  cg is an analog group
 * @retval CG_DIGITAL cg is a digital group
 * @retval CG_INVALID cg is something else
 */
static int check_channel_group(struct dev_context *devc,
			const struct sr_channel_group *cg)
{
	unsigned int i;
	const struct scope_config *model;

	model = devc->model_config;

	if (!cg)
		return CG_NONE;

	for (i = 0; i < model->analog_channels; ++i)
		if (cg == devc->analog_groups[i])
			return CG_ANALOG;

	for (i = 0; i < model->pods; ++i)
		if (cg == devc->digital_groups[i])
			return CG_DIGITAL;

	sr_err("Invalid channel group specified.");
	return CG_INVALID;
}

static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	int ret, cg_type;
	unsigned int i;
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;

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

	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
		return SR_ERR;

	ret = SR_ERR_NA;
	model = devc->model_config;
	state = devc->model_state;

	switch (key) {
	case SR_CONF_NUM_HDIV:
		*data = g_variant_new_int32(model->num_xdivs);
		ret = SR_OK;
		break;
	case SR_CONF_TIMEBASE:
		*data = g_variant_new("(tt)",
				(*model->timebases)[state->timebase][0],
				(*model->timebases)[state->timebase][1]);
		ret = SR_OK;
		break;
	case SR_CONF_NUM_VDIV:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type == CG_ANALOG) {
				*data = g_variant_new_int32(model->num_ydivs);
				ret = SR_OK;
				break;
		} else {
			ret = SR_ERR_NA;
		}
		break;
	case SR_CONF_VDIV:
		ret = SR_ERR_NA;
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type != CG_ANALOG)
			break;

		for (i = 0; i < model->analog_channels; ++i) {
			if (cg != devc->analog_groups[i])
				continue;
			*data = g_variant_new("(tt)",
					(*model->vdivs)[state->analog_states[i].vdiv][0],
					(*model->vdivs)[state->analog_states[i].vdiv][1]);
			ret = SR_OK;
			break;
		}
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SLOPE:
		*data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
		ret = SR_OK;
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		*data = g_variant_new_double(state->horiz_triggerpos);
		ret = SR_OK;
		break;
	case SR_CONF_COUPLING:
		ret = SR_ERR_NA;
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type != CG_ANALOG)
			break;

		for (i = 0; i < model->analog_channels; ++i) {
			if (cg != devc->analog_groups[i])
				continue;
			*data = g_variant_new_string((*model->coupling_options)[state->analog_states[i].coupling]);
			ret = SR_OK;
			break;
		}
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(state->sample_rate);
		ret = SR_OK;
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n)
{
	unsigned int i;
	GVariant *rational[2];
	GVariantBuilder gvb;

	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);

	for (i = 0; i < n; i++) {
		rational[0] = g_variant_new_uint64((*array)[i][0]);
		rational[1] = g_variant_new_uint64((*array)[i][1]);

		/* FIXME: Valgrind reports a memory leak here. */
		g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	}

	return g_variant_builder_end(&gvb);
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	int ret, cg_type;
	unsigned int i, j;
	char float_str[30];
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;
	const char *tmp;
	uint64_t p, q;
	double tmp_d;
	gboolean update_sample_rate;

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

	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
		return SR_ERR;

	model = devc->model_config;
	state = devc->model_state;
	update_sample_rate = FALSE;

	ret = SR_ERR_NA;

	switch (key) {
	case SR_CONF_LIMIT_FRAMES:
		devc->frame_limit = g_variant_get_uint64(data);
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SOURCE:
		tmp = g_variant_get_string(data, NULL);
		for (i = 0; (*model->trigger_sources)[i]; i++) {
			if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
				continue;
			state->trigger_source = i;
			/* TODO: A and B trigger support possible? */
			ret = dlm_trigger_source_set(sdi->conn, (*model->trigger_sources)[i]);
			break;
		}
		break;
	case SR_CONF_VDIV:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		}

		g_variant_get(data, "(tt)", &p, &q);

		for (i = 0; i < model->num_vdivs; i++) {
			if (p != (*model->vdivs)[i][0] ||
					q != (*model->vdivs)[i][1])
				continue;
			for (j = 1; j <= model->analog_channels; ++j) {
				if (cg != devc->analog_groups[j - 1])
					continue;
				state->analog_states[j - 1].vdiv = i;
				g_ascii_formatd(float_str, sizeof(float_str),
						"%E", (float) p / q);
				if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK ||
						sr_scpi_get_opc(sdi->conn) != SR_OK)
					return SR_ERR;

				break;
			}

			ret = SR_OK;
			break;
		}
		break;
	case SR_CONF_TIMEBASE:
		g_variant_get(data, "(tt)", &p, &q);

		for (i = 0; i < model->num_timebases; i++) {
			if (p != (*model->timebases)[i][0] ||
					q != (*model->timebases)[i][1])
				continue;
			state->timebase = i;
			g_ascii_formatd(float_str, sizeof(float_str),
					"%E", (float) p / q);
			ret = dlm_timebase_set(sdi->conn, float_str);
			update_sample_rate = TRUE;
			break;
		}
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		tmp_d = g_variant_get_double(data);

		/* TODO: Check if the calculation makes sense for the DLM. */
		if (tmp_d < 0.0 || tmp_d > 1.0)
			return SR_ERR;

		state->horiz_triggerpos = tmp_d;
		tmp_d = -(tmp_d - 0.5) *
				((double) (*model->timebases)[state->timebase][0] /
				(*model->timebases)[state->timebase][1])
				* model->num_xdivs;

		g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
		ret = dlm_horiz_trigger_pos_set(sdi->conn, float_str);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		tmp = g_variant_get_string(data, NULL);

		if (!tmp || !(tmp[0] == 'f' || tmp[0] == 'r'))
			return SR_ERR_ARG;

		/* Note: See dlm_trigger_slopes[] in protocol.c. */
		state->trigger_slope = (tmp[0] == 'r') ?
				SLOPE_POSITIVE : SLOPE_NEGATIVE;

		ret = dlm_trigger_slope_set(sdi->conn, state->trigger_slope);
		break;
	case SR_CONF_COUPLING:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		}

		tmp = g_variant_get_string(data, NULL);

		for (i = 0; (*model->coupling_options)[i]; i++) {
			if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
				continue;
			for (j = 1; j <= model->analog_channels; ++j) {
				if (cg != devc->analog_groups[j - 1])
					continue;
				state->analog_states[j-1].coupling = i;

				if (dlm_analog_chan_coupl_set(sdi->conn, j, tmp) != SR_OK ||
						sr_scpi_get_opc(sdi->conn) != SR_OK)
					return SR_ERR;
				break;
			}

			ret = SR_OK;
			break;
		}
		break;
	default:
		ret = SR_ERR_NA;
		break;
	}

	if (ret == SR_OK)
		ret = sr_scpi_get_opc(sdi->conn);

	if (ret == SR_OK && update_sample_rate)
		ret = dlm_sample_rate_query(sdi);

	return ret;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	int cg_type = CG_NONE;
	struct dev_context *devc = NULL;
	const struct scope_config *model = NULL;

	if (sdi && (devc = sdi->priv)) {
		if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
			return SR_ERR;

		model = devc->model_config;
	}

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		if (cg_type == CG_NONE) {
			if (model)
				*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					model->devopts, model->num_devopts, sizeof(uint32_t));
			else
				*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		} else if (cg_type == CG_ANALOG) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				model->analog_devopts, model->num_analog_devopts, sizeof(uint32_t));
		} else {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				NULL, 0, sizeof(uint32_t));
		}
		break;
	case SR_CONF_COUPLING:
		if (cg_type == CG_NONE)
			return SR_ERR_CHANNEL_GROUP;
		*data = g_variant_new_strv(*model->coupling_options,
				g_strv_length((char **)*model->coupling_options));
		break;
	case SR_CONF_TRIGGER_SOURCE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_sources,
				g_strv_length((char **)*model->trigger_sources));
		break;
	case SR_CONF_TRIGGER_SLOPE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_slopes,
				g_strv_length((char **)*model->trigger_slopes));
		break;
	case SR_CONF_TIMEBASE:
		if (!model)
			return SR_ERR_ARG;
		*data = build_tuples(model->timebases, model->num_timebases);
		break;
	case SR_CONF_VDIV:
		if (cg_type == CG_NONE)
			return SR_ERR_CHANNEL_GROUP;
		*data = build_tuples(model->vdivs, model->num_vdivs);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dlm_check_channels(GSList *channels)
{
	GSList *l;
	struct sr_channel *ch;
	gboolean enabled_pod1, enabled_chan4;

	enabled_pod1 = enabled_chan4 = FALSE;

	/* Note: On the DLM2000, CH4 and Logic are shared. */
	/* TODO Handle non-DLM2000 models. */
	for (l = channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_ANALOG:
			if (ch->index == 3)
				enabled_chan4 = TRUE;
			break;
		case SR_CHANNEL_LOGIC:
			enabled_pod1 = TRUE;
			break;
		default:
			return SR_ERR;
		}
	}

	if (enabled_pod1 && enabled_chan4)
		return SR_ERR;

	return SR_OK;
}

static int dlm_setup_channels(const struct sr_dev_inst *sdi)
{
	GSList *l;
	unsigned int i;
	gboolean *pod_enabled, setup_changed;
	struct scope_state *state;
	const struct scope_config *model;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

	devc = sdi->priv;
	scpi = sdi->conn;
	state = devc->model_state;
	model = devc->model_config;
	setup_changed = FALSE;

	pod_enabled = g_malloc0(sizeof(gboolean) * model->pods);

	for (l = sdi->channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_ANALOG:
			if (ch->enabled == state->analog_states[ch->index].state)
				break;

			if (dlm_analog_chan_state_set(scpi, ch->index + 1,
					ch->enabled) != SR_OK)
				return SR_ERR;

			state->analog_states[ch->index].state = ch->enabled;
			setup_changed = TRUE;
			break;
		case SR_CHANNEL_LOGIC:
			i = ch->index - DLM_DIG_CHAN_INDEX_OFFS;
			if (ch->enabled)
				pod_enabled[i / 8] = TRUE;

			if (ch->enabled == state->digital_states[i])
				break;

			if (dlm_digital_chan_state_set(scpi, i + 1,
					ch->enabled) != SR_OK)
				return SR_ERR;

			state->digital_states[i] = ch->enabled;
			setup_changed = TRUE;
			break;
		default:
			return SR_ERR;
		}
	}

	for (i = 1; i <= model->pods; ++i) {
		if (state->pod_states[i - 1] == pod_enabled[i - 1])
			continue;

		if (dlm_digital_pod_state_set(scpi, i,
				pod_enabled[i - 1]) != SR_OK)
			return SR_ERR;

		state->pod_states[i - 1] = pod_enabled[i - 1];
		setup_changed = TRUE;
	}

	g_free(pod_enabled);

	if (setup_changed && dlm_sample_rate_query(sdi) != SR_OK)
		return SR_ERR;

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
	GSList *l;
	gboolean digital_added;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

	(void)cb_data;

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

	scpi = sdi->conn;
	devc = sdi->priv;
	digital_added = FALSE;

	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;

	for (l = sdi->channels; l; l = l->next) {
		ch = l->data;
		if (!ch->enabled)
			continue;
		/* Only add a single digital channel. */
		if (ch->type != SR_CHANNEL_LOGIC || !digital_added) {
			devc->enabled_channels = g_slist_append(
				devc->enabled_channels, ch);
			if (ch->type == SR_CHANNEL_LOGIC)
				digital_added = TRUE;
		}
	}

	if (!devc->enabled_channels)
		return SR_ERR;

	if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
		sr_err("Invalid channel configuration specified!");
		return SR_ERR_NA;
	}

	if (dlm_setup_channels(sdi) != SR_OK) {
		sr_err("Failed to setup channel configuration!");
		return SR_ERR;
	}

	/* Request data for the first enabled channel. */
	devc->current_channel = devc->enabled_channels;
	dlm_channel_data_request(sdi);

	/* Call our callback when data comes in or after 5ms. */
	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
			dlm_data_receive, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;

	(void)cb_data;

	packet.type = SR_DF_END;
	packet.payload = NULL;
	sr_session_send(sdi, &packet);

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

	devc = sdi->priv;

	devc->num_frames = 0;
	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;

	sr_scpi_source_remove(sdi->session, sdi->conn);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info = {
	.name = "yokogawa-dlm",
	.longname = "Yokogawa DL/DLM",
	.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
10763937 SA	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 abraxa (Soeren Apel) <soeren@apelpie.net>
	5	* Based on the Hameg HMO driver by poljar (Damir Jelić) <poljarinho@gmail.com>
	6	*
	7	* This program is free software: you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation, either version 3 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#include <stdlib.h>
	22	#include "protocol.h"
	23
8ab929d6	24	SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info;
8ab929d6	25
329733d9 UH	26	static const char *MANUFACTURER_ID = "YOKOGAWA";
329733d9 UH	27	static const char *MANUFACTURER_NAME = "Yokogawa";
8ab929d6	28
cf0280fa AJ	29	static const uint32_t drvopts[] = {
	30	SR_CONF_LOGIC_ANALYZER,
	31	SR_CONF_OSCILLOSCOPE,
	32	};
	33
8ab929d6 SA	34	enum {
	35	CG_INVALID = -1,
	36	CG_NONE,
	37	CG_ANALOG,
	38	CG_DIGITAL,
	39	};
	40
4f840ce9	41	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
8ab929d6 SA	42	{
	43	return std_init(sr_ctx, di, LOG_PREFIX);
	44	}
	45
	46	static struct sr_dev_inst probe_usbtmc_device(struct sr_scpi_dev_inst scpi)
	47	{
	48	struct sr_dev_inst *sdi;
	49	struct dev_context *devc;
	50	struct sr_scpi_hw_info *hw_info;
	51	char *model_name;
	52	int model_index;
	53
	54	sdi = NULL;
	55	devc = NULL;
	56	hw_info = NULL;
	57
	58	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	59	sr_info("Couldn't get IDN response.");
	60	goto fail;
	61	}
	62
	63	if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
	64	goto fail;
	65
	66	if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
	67	goto fail;
	68
aac29cc1	69	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	70	sdi->status = SR_ST_ACTIVE;
	71	sdi->vendor = g_strdup(MANUFACTURER_NAME);
	72	sdi->model = g_strdup(model_name);
	73	sdi->version = g_strdup(hw_info->firmware_version);
8ab929d6	74
d1314831 SA	75	sdi->serial_num = g_strdup(hw_info->serial_number);
d1314831 SA	76
8ab929d6 SA	77	sr_scpi_hw_info_free(hw_info);
	78	hw_info = NULL;
	79
ac10a927	80	devc = g_malloc0(sizeof(struct dev_context));
8ab929d6	81
4f840ce9	82	sdi->driver = &yokogawa_dlm_driver_info;
8ab929d6 SA	83	sdi->priv = devc;
	84	sdi->inst_type = SR_INST_SCPI;
	85	sdi->conn = scpi;
	86
	87	if (dlm_device_init(sdi, model_index) != SR_OK)
	88	goto fail;
	89
	90	sr_scpi_close(sdi->conn);
	91
	92	sdi->status = SR_ST_INACTIVE;
	93	return sdi;
	94
	95	fail:
	96	if (hw_info)
	97	sr_scpi_hw_info_free(hw_info);
	98	if (sdi)
	99	sr_dev_inst_free(sdi);
b1f83103	100	g_free(devc);
8ab929d6 SA	101
	102	return NULL;
	103	}
	104
4f840ce9	105	static GSList scan(struct sr_dev_driver di, GSList *options)
8ab929d6 SA	106	{
	107	return sr_scpi_scan(di->priv, options, probe_usbtmc_device);
	108	}
	109
4f840ce9	110	static GSList dev_list(const struct sr_dev_driver di)
8ab929d6 SA	111	{
	112	return ((struct drv_context *)(di->priv))->instances;
	113	}
	114
	115	static void clear_helper(void *priv)
	116	{
	117	struct dev_context *devc;
	118
	119	devc = priv;
	120
	121	dlm_scope_state_destroy(devc->model_state);
	122
	123	g_free(devc->analog_groups);
	124	g_free(devc->digital_groups);
	125	g_free(devc);
	126	}
	127
4f840ce9	128	static int dev_clear(const struct sr_dev_driver *di)
8ab929d6 SA	129	{
	130	return std_dev_clear(di, clear_helper);
	131	}
	132
	133	static int dev_open(struct sr_dev_inst *sdi)
	134	{
	135	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	136	return SR_ERR;
	137
	138	if (dlm_scope_state_query(sdi) != SR_OK)
	139	return SR_ERR;
	140
	141	sdi->status = SR_ST_ACTIVE;
	142
	143	return SR_OK;
	144	}
	145
	146	static int dev_close(struct sr_dev_inst *sdi)
	147	{
	148	if (sdi->status == SR_ST_INACTIVE)
	149	return SR_OK;
	150
	151	sr_scpi_close(sdi->conn);
	152
	153	sdi->status = SR_ST_INACTIVE;
	154
	155	return SR_OK;
	156	}
	157
4f840ce9	158	static int cleanup(const struct sr_dev_driver *di)
8ab929d6	159	{
4f840ce9	160	dev_clear(di);
8ab929d6 SA	161
	162	return SR_OK;
	163	}
	164
	165	/**
	166	* Check which category a given channel group belongs to.
	167	*
	168	* @param devc Our internal device context.
	169	* @param cg The channel group to check.
	170	*
	171	* @retval CG_NONE cg is NULL
	172	* @retval CG_ANALOG cg is an analog group
	173	* @retval CG_DIGITAL cg is a digital group
	174	* @retval CG_INVALID cg is something else
	175	*/
	176	static int check_channel_group(struct dev_context *devc,
ac10a927	177	const struct sr_channel_group *cg)
8ab929d6 SA	178	{
8ab929d6 SA	179	unsigned int i;
329733d9	180	const struct scope_config *model;
8ab929d6 SA	181
	182	model = devc->model_config;
	183
	184	if (!cg)
	185	return CG_NONE;
	186
	187	for (i = 0; i < model->analog_channels; ++i)
	188	if (cg == devc->analog_groups[i])
	189	return CG_ANALOG;
	190
	191	for (i = 0; i < model->pods; ++i)
	192	if (cg == devc->digital_groups[i])
	193	return CG_DIGITAL;
	194
	195	sr_err("Invalid channel group specified.");
	196	return CG_INVALID;
	197	}
	198
584560f1	199	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	200	const struct sr_channel_group *cg)
8ab929d6 SA	201	{
	202	int ret, cg_type;
	203	unsigned int i;
	204	struct dev_context *devc;
329733d9	205	const struct scope_config *model;
8ab929d6 SA	206	struct scope_state *state;
	207
	208	if (!sdi \|\| !(devc = sdi->priv))
	209	return SR_ERR_ARG;
	210
	211	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	212	return SR_ERR;
	213
	214	ret = SR_ERR_NA;
	215	model = devc->model_config;
	216	state = devc->model_state;
	217
	218	switch (key) {
bf622e6d	219	case SR_CONF_NUM_HDIV:
8ab929d6 SA	220	*data = g_variant_new_int32(model->num_xdivs);
	221	ret = SR_OK;
	222	break;
	223	case SR_CONF_TIMEBASE:
	224	*data = g_variant_new("(tt)",
ac10a927 SA	225	(*model->timebases)[state->timebase][0],
ac10a927 SA	226	(*model->timebases)[state->timebase][1]);
8ab929d6 SA	227	ret = SR_OK;
	228	break;
	229	case SR_CONF_NUM_VDIV:
	230	if (cg_type == CG_NONE) {
	231	sr_err("No channel group specified.");
	232	return SR_ERR_CHANNEL_GROUP;
	233	} else if (cg_type == CG_ANALOG) {
	234	*data = g_variant_new_int32(model->num_ydivs);
	235	ret = SR_OK;
	236	break;
	237	} else {
	238	ret = SR_ERR_NA;
	239	}
	240	break;
	241	case SR_CONF_VDIV:
	242	ret = SR_ERR_NA;
	243	if (cg_type == CG_NONE) {
	244	sr_err("No channel group specified.");
	245	return SR_ERR_CHANNEL_GROUP;
	246	} else if (cg_type != CG_ANALOG)
	247	break;
	248
	249	for (i = 0; i < model->analog_channels; ++i) {
	250	if (cg != devc->analog_groups[i])
	251	continue;
	252	*data = g_variant_new("(tt)",
ac10a927 SA	253	(*model->vdivs)[state->analog_states[i].vdiv][0],
ac10a927 SA	254	(*model->vdivs)[state->analog_states[i].vdiv][1]);
8ab929d6 SA	255	ret = SR_OK;
	256	break;
	257	}
	258	break;
	259	case SR_CONF_TRIGGER_SOURCE:
	260	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	261	ret = SR_OK;
	262	break;
	263	case SR_CONF_TRIGGER_SLOPE:
	264	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	265	ret = SR_OK;
	266	break;
	267	case SR_CONF_HORIZ_TRIGGERPOS:
	268	*data = g_variant_new_double(state->horiz_triggerpos);
	269	ret = SR_OK;
	270	break;
	271	case SR_CONF_COUPLING:
	272	ret = SR_ERR_NA;
	273	if (cg_type == CG_NONE) {
	274	sr_err("No channel group specified.");
	275	return SR_ERR_CHANNEL_GROUP;
	276	} else if (cg_type != CG_ANALOG)
	277	break;
	278
	279	for (i = 0; i < model->analog_channels; ++i) {
	280	if (cg != devc->analog_groups[i])
	281	continue;
	282	data = g_variant_new_string((model->coupling_options)[state->analog_states[i].coupling]);
	283	ret = SR_OK;
	284	break;
	285	}
	286	break;
	287	case SR_CONF_SAMPLERATE:
	288	*data = g_variant_new_uint64(state->sample_rate);
	289	ret = SR_OK;
	290	break;
	291	default:
	292	ret = SR_ERR_NA;
	293	}
	294
	295	return ret;
	296	}
	297
	298	static GVariant build_tuples(const uint64_t (array)[][2], unsigned int n)
	299	{
	300	unsigned int i;
	301	GVariant *rational[2];
	302	GVariantBuilder gvb;
	303
	304	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	305
	306	for (i = 0; i < n; i++) {
	307	rational[0] = g_variant_new_uint64((*array)[i][0]);
	308	rational[1] = g_variant_new_uint64((*array)[i][1]);
	309
	310	/* FIXME: Valgrind reports a memory leak here. */
	311	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	312	}
	313
	314	return g_variant_builder_end(&gvb);
	315	}
	316
584560f1	317	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
ac10a927	318	const struct sr_channel_group *cg)
8ab929d6 SA	319	{
	320	int ret, cg_type;
	321	unsigned int i, j;
	322	char float_str[30];
	323	struct dev_context *devc;
329733d9	324	const struct scope_config *model;
8ab929d6 SA	325	struct scope_state *state;
	326	const char *tmp;
	327	uint64_t p, q;
	328	double tmp_d;
	329	gboolean update_sample_rate;
	330
	331	if (!sdi \|\| !(devc = sdi->priv))
	332	return SR_ERR_ARG;
	333
	334	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	335	return SR_ERR;
	336
	337	model = devc->model_config;
	338	state = devc->model_state;
	339	update_sample_rate = FALSE;
	340
	341	ret = SR_ERR_NA;
	342
	343	switch (key) {
	344	case SR_CONF_LIMIT_FRAMES:
	345	devc->frame_limit = g_variant_get_uint64(data);
	346	ret = SR_OK;
	347	break;
	348	case SR_CONF_TRIGGER_SOURCE:
	349	tmp = g_variant_get_string(data, NULL);
	350	for (i = 0; (*model->trigger_sources)[i]; i++) {
	351	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	352	continue;
	353	state->trigger_source = i;
	354	/* TODO: A and B trigger support possible? */
	355	ret = dlm_trigger_source_set(sdi->conn, (*model->trigger_sources)[i]);
	356	break;
	357	}
	358	break;
	359	case SR_CONF_VDIV:
	360	if (cg_type == CG_NONE) {
	361	sr_err("No channel group specified.");
	362	return SR_ERR_CHANNEL_GROUP;
	363	}
	364
	365	g_variant_get(data, "(tt)", &p, &q);
	366
	367	for (i = 0; i < model->num_vdivs; i++) {
	368	if (p != (*model->vdivs)[i][0] \|\|
ac10a927	369	q != (*model->vdivs)[i][1])
8ab929d6 SA	370	continue;
	371	for (j = 1; j <= model->analog_channels; ++j) {
	372	if (cg != devc->analog_groups[j - 1])
	373	continue;
	374	state->analog_states[j - 1].vdiv = i;
	375	g_ascii_formatd(float_str, sizeof(float_str),
	376	"%E", (float) p / q);
	377	if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK \|\|
ac10a927	378	sr_scpi_get_opc(sdi->conn) != SR_OK)
8ab929d6 SA	379	return SR_ERR;
	380
	381	break;
	382	}
	383
	384	ret = SR_OK;
	385	break;
	386	}
	387	break;
	388	case SR_CONF_TIMEBASE:
	389	g_variant_get(data, "(tt)", &p, &q);
	390
	391	for (i = 0; i < model->num_timebases; i++) {
	392	if (p != (*model->timebases)[i][0] \|\|
ac10a927	393	q != (*model->timebases)[i][1])
8ab929d6 SA	394	continue;
	395	state->timebase = i;
	396	g_ascii_formatd(float_str, sizeof(float_str),
	397	"%E", (float) p / q);
	398	ret = dlm_timebase_set(sdi->conn, float_str);
	399	update_sample_rate = TRUE;
	400	break;
	401	}
	402	break;
	403	case SR_CONF_HORIZ_TRIGGERPOS:
	404	tmp_d = g_variant_get_double(data);
	405
	406	/* TODO: Check if the calculation makes sense for the DLM. */
	407	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	408	return SR_ERR;
	409
	410	state->horiz_triggerpos = tmp_d;
	411	tmp_d = -(tmp_d - 0.5) *
ac10a927 SA	412	((double) (*model->timebases)[state->timebase][0] /
	413	(*model->timebases)[state->timebase][1])
	414	* model->num_xdivs;
8ab929d6 SA	415
	416	g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
	417	ret = dlm_horiz_trigger_pos_set(sdi->conn, float_str);
	418	break;
	419	case SR_CONF_TRIGGER_SLOPE:
	420	tmp = g_variant_get_string(data, NULL);
	421
	422	if (!tmp \|\| !(tmp[0] == 'f' \|\| tmp[0] == 'r'))
	423	return SR_ERR_ARG;
	424
	425	/* Note: See dlm_trigger_slopes[] in protocol.c. */
	426	state->trigger_slope = (tmp[0] == 'r') ?
	427	SLOPE_POSITIVE : SLOPE_NEGATIVE;
	428
	429	ret = dlm_trigger_slope_set(sdi->conn, state->trigger_slope);
	430	break;
	431	case SR_CONF_COUPLING:
	432	if (cg_type == CG_NONE) {
	433	sr_err("No channel group specified.");
	434	return SR_ERR_CHANNEL_GROUP;
	435	}
	436
	437	tmp = g_variant_get_string(data, NULL);
	438
	439	for (i = 0; (*model->coupling_options)[i]; i++) {
	440	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
	441	continue;
	442	for (j = 1; j <= model->analog_channels; ++j) {
	443	if (cg != devc->analog_groups[j - 1])
	444	continue;
	445	state->analog_states[j-1].coupling = i;
	446
	447	if (dlm_analog_chan_coupl_set(sdi->conn, j, tmp) != SR_OK \|\|
ac10a927	448	sr_scpi_get_opc(sdi->conn) != SR_OK)
8ab929d6 SA	449	return SR_ERR;
	450	break;
	451	}
	452
	453	ret = SR_OK;
	454	break;
	455	}
	456	break;
	457	default:
	458	ret = SR_ERR_NA;
	459	break;
	460	}
	461
	462	if (ret == SR_OK)
	463	ret = sr_scpi_get_opc(sdi->conn);
	464
	465	if (ret == SR_OK && update_sample_rate)
	466	ret = dlm_sample_rate_query(sdi);
	467
	468	return ret;
	469	}
	470
584560f1	471	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	472	const struct sr_channel_group *cg)
8ab929d6	473	{
cf0280fa AJ	474	int cg_type = CG_NONE;
cf0280fa AJ	475	struct dev_context *devc = NULL;
329733d9	476	const struct scope_config *model = NULL;
8ab929d6	477
cf0280fa AJ	478	if (sdi && (devc = sdi->priv)) {
	479	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	480	return SR_ERR;
8ab929d6	481
cf0280fa AJ	482	model = devc->model_config;
cf0280fa AJ	483	}
8ab929d6 SA	484
8ab929d6 SA	485	switch (key) {
8ab929d6 SA	486	case SR_CONF_DEVICE_OPTIONS:
8ab929d6 SA	487	if (cg_type == CG_NONE) {
cf0280fa AJ	488	if (model)
	489	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	490	model->devopts, model->num_devopts, sizeof(uint32_t));
	491	else
	492	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	493	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
8ab929d6	494	} else if (cg_type == CG_ANALOG) {
584560f1	495	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
af945a66	496	model->analog_devopts, model->num_analog_devopts, sizeof(uint32_t));
8ab929d6	497	} else {
584560f1 BV	498	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
584560f1 BV	499	NULL, 0, sizeof(uint32_t));
8ab929d6 SA	500	}
	501	break;
	502	case SR_CONF_COUPLING:
	503	if (cg_type == CG_NONE)
	504	return SR_ERR_CHANNEL_GROUP;
	505	data = g_variant_new_strv(model->coupling_options,
ac10a927	506	g_strv_length((char *)model->coupling_options));
8ab929d6 SA	507	break;
8ab929d6 SA	508	case SR_CONF_TRIGGER_SOURCE:
cf0280fa AJ	509	if (!model)
cf0280fa AJ	510	return SR_ERR_ARG;
8ab929d6	511	data = g_variant_new_strv(model->trigger_sources,
ac10a927	512	g_strv_length((char *)model->trigger_sources));
8ab929d6 SA	513	break;
8ab929d6 SA	514	case SR_CONF_TRIGGER_SLOPE:
cf0280fa AJ	515	if (!model)
cf0280fa AJ	516	return SR_ERR_ARG;
8ab929d6	517	data = g_variant_new_strv(model->trigger_slopes,
ac10a927	518	g_strv_length((char *)model->trigger_slopes));
8ab929d6 SA	519	break;
8ab929d6 SA	520	case SR_CONF_TIMEBASE:
cf0280fa AJ	521	if (!model)
cf0280fa AJ	522	return SR_ERR_ARG;
8ab929d6 SA	523	*data = build_tuples(model->timebases, model->num_timebases);
	524	break;
	525	case SR_CONF_VDIV:
	526	if (cg_type == CG_NONE)
	527	return SR_ERR_CHANNEL_GROUP;
	528	*data = build_tuples(model->vdivs, model->num_vdivs);
	529	break;
	530	default:
	531	return SR_ERR_NA;
	532	}
	533
	534	return SR_OK;
	535	}
	536
	537	static int dlm_check_channels(GSList *channels)
	538	{
	539	GSList *l;
	540	struct sr_channel *ch;
	541	gboolean enabled_pod1, enabled_chan4;
	542
	543	enabled_pod1 = enabled_chan4 = FALSE;
	544
	545	/* Note: On the DLM2000, CH4 and Logic are shared. */
	546	/* TODO Handle non-DLM2000 models. */
	547	for (l = channels; l; l = l->next) {
	548	ch = l->data;
	549	switch (ch->type) {
	550	case SR_CHANNEL_ANALOG:
	551	if (ch->index == 3)
	552	enabled_chan4 = TRUE;
	553	break;
	554	case SR_CHANNEL_LOGIC:
	555	enabled_pod1 = TRUE;
	556	break;
	557	default:
	558	return SR_ERR;
	559	}
	560	}
	561
	562	if (enabled_pod1 && enabled_chan4)
	563	return SR_ERR;
	564
	565	return SR_OK;
	566	}
	567
	568	static int dlm_setup_channels(const struct sr_dev_inst *sdi)
	569	{
	570	GSList *l;
	571	unsigned int i;
	572	gboolean *pod_enabled, setup_changed;
	573	struct scope_state *state;
329733d9	574	const struct scope_config *model;
8ab929d6 SA	575	struct sr_channel *ch;
	576	struct dev_context *devc;
	577	struct sr_scpi_dev_inst *scpi;
	578
	579	devc = sdi->priv;
	580	scpi = sdi->conn;
	581	state = devc->model_state;
	582	model = devc->model_config;
	583	setup_changed = FALSE;
	584
ac10a927	585	pod_enabled = g_malloc0(sizeof(gboolean) * model->pods);
8ab929d6 SA	586
	587	for (l = sdi->channels; l; l = l->next) {
	588	ch = l->data;
	589	switch (ch->type) {
	590	case SR_CHANNEL_ANALOG:
	591	if (ch->enabled == state->analog_states[ch->index].state)
	592	break;
	593
	594	if (dlm_analog_chan_state_set(scpi, ch->index + 1,
ac10a927	595	ch->enabled) != SR_OK)
8ab929d6 SA	596	return SR_ERR;
	597
	598	state->analog_states[ch->index].state = ch->enabled;
	599	setup_changed = TRUE;
	600	break;
	601	case SR_CHANNEL_LOGIC:
6fd78a9f	602	i = ch->index - DLM_DIG_CHAN_INDEX_OFFS;
8ab929d6	603	if (ch->enabled)
6fd78a9f	604	pod_enabled[i / 8] = TRUE;
8ab929d6	605
6fd78a9f	606	if (ch->enabled == state->digital_states[i])
8ab929d6 SA	607	break;
8ab929d6 SA	608
6fd78a9f	609	if (dlm_digital_chan_state_set(scpi, i + 1,
ac10a927	610	ch->enabled) != SR_OK)
8ab929d6 SA	611	return SR_ERR;
8ab929d6 SA	612
6fd78a9f	613	state->digital_states[i] = ch->enabled;
8ab929d6 SA	614	setup_changed = TRUE;
	615	break;
	616	default:
	617	return SR_ERR;
	618	}
	619	}
	620
	621	for (i = 1; i <= model->pods; ++i) {
	622	if (state->pod_states[i - 1] == pod_enabled[i - 1])
	623	continue;
	624
	625	if (dlm_digital_pod_state_set(scpi, i,
ac10a927	626	pod_enabled[i - 1]) != SR_OK)
8ab929d6 SA	627	return SR_ERR;
	628
	629	state->pod_states[i - 1] = pod_enabled[i - 1];
	630	setup_changed = TRUE;
	631	}
	632
	633	g_free(pod_enabled);
	634
	635	if (setup_changed && dlm_sample_rate_query(sdi) != SR_OK)
	636	return SR_ERR;
	637
	638	return SR_OK;
	639	}
	640
	641	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	642	{
	643	GSList *l;
	644	gboolean digital_added;
	645	struct sr_channel *ch;
	646	struct dev_context *devc;
	647	struct sr_scpi_dev_inst *scpi;
	648
	649	(void)cb_data;
	650
ac10a927 SA	651	if (sdi->status != SR_ST_ACTIVE)
ac10a927 SA	652	return SR_ERR_DEV_CLOSED;
8ab929d6 SA	653
	654	scpi = sdi->conn;
	655	devc = sdi->priv;
	656	digital_added = FALSE;
	657
	658	g_slist_free(devc->enabled_channels);
	659	devc->enabled_channels = NULL;
	660
	661	for (l = sdi->channels; l; l = l->next) {
	662	ch = l->data;
	663	if (!ch->enabled)
	664	continue;
	665	/* Only add a single digital channel. */
	666	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	667	devc->enabled_channels = g_slist_append(
ac10a927 SA	668	devc->enabled_channels, ch);
	669	if (ch->type == SR_CHANNEL_LOGIC)
	670	digital_added = TRUE;
8ab929d6 SA	671	}
	672	}
	673
	674	if (!devc->enabled_channels)
	675	return SR_ERR;
	676
	677	if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
	678	sr_err("Invalid channel configuration specified!");
	679	return SR_ERR_NA;
	680	}
	681
	682	if (dlm_setup_channels(sdi) != SR_OK) {
	683	sr_err("Failed to setup channel configuration!");
	684	return SR_ERR;
	685	}
	686
af3487ec SA	687	/* Request data for the first enabled channel. */
	688	devc->current_channel = devc->enabled_channels;
	689	dlm_channel_data_request(sdi);
	690
0028d5a1 SA	691	/* Call our callback when data comes in or after 5ms. */
0028d5a1 SA	692	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
8ab929d6 SA	693	dlm_data_receive, (void *)sdi);
	694
	695	return SR_OK;
	696	}
	697
	698	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	699	{
	700	struct dev_context *devc;
8ab929d6 SA	701	struct sr_datafeed_packet packet;
	702
	703	(void)cb_data;
	704
	705	packet.type = SR_DF_END;
	706	packet.payload = NULL;
	707	sr_session_send(sdi, &packet);
	708
	709	if (sdi->status != SR_ST_ACTIVE)
	710	return SR_ERR_DEV_CLOSED;
	711
	712	devc = sdi->priv;
	713
	714	devc->num_frames = 0;
	715	g_slist_free(devc->enabled_channels);
	716	devc->enabled_channels = NULL;
af3487ec SA	717
af3487ec SA	718	sr_scpi_source_remove(sdi->session, sdi->conn);
8ab929d6 SA	719
	720	return SR_OK;
	721	}
10763937 SA	722
	723	SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info = {
	724	.name = "yokogawa-dlm",
ac10a927	725	.longname = "Yokogawa DL/DLM",
10763937	726	.api_version = 1,
8ab929d6 SA	727	.init = init,
	728	.cleanup = cleanup,
	729	.scan = scan,
	730	.dev_list = dev_list,
	731	.dev_clear = dev_clear,
	732	.config_get = config_get,
	733	.config_set = config_set,
	734	.config_list = config_list,
	735	.dev_open = dev_open,
	736	.dev_close = dev_close,
	737	.dev_acquisition_start = dev_acquisition_start,
	738	.dev_acquisition_stop = dev_acquisition_stop,
10763937 SA	739	.priv = NULL,
10763937 SA	740	};