[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 <config.h>
#include <stdlib.h>
#include "scpi.h"
#include "protocol.h"

static struct sr_dev_driver yokogawa_dlm_driver_info;

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

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

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

static const uint32_t dlm_devopts[] = {
	SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET,
	SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_NUM_HDIV | SR_CONF_GET,
	SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const uint32_t dlm_analog_devopts[] = {
	SR_CONF_NUM_VDIV | SR_CONF_GET,
	SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const uint32_t dlm_digital_devopts[] = {
};

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

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->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;

	return sdi;

fail:
	sr_scpi_hw_info_free(hw_info);
	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->context, options, probe_usbtmc_device);
}

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)
{
	sr_scpi_close(sdi->conn);

	sdi->status = SR_ST_INACTIVE;

	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)
		return SR_ERR_ARG;

	devc = sdi->priv;

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

	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)",
				dlm_timebases[state->timebase][0],
				dlm_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)",
					dlm_vdivs[state->analog_states[i].vdiv][0],
					dlm_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(dlm_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 < ARRAY_SIZE(dlm_vdivs); i++) {
			if (p != dlm_vdivs[i][0] ||
					q != dlm_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 < ARRAY_SIZE(dlm_timebases); i++) {
			if (p != dlm_timebases[i][0] ||
					q != dlm_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) dlm_timebases[state->timebase][0] /
				dlm_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_channel_set(const struct sr_dev_inst *sdi,
			struct sr_channel *ch, unsigned int changes)
{
	/* Currently we only handle SR_CHANNEL_SET_ENABLED. */
	if (changes != SR_CHANNEL_SET_ENABLED)
		return SR_ERR_NA;

	return dlm_channel_state_set(sdi, ch->index, ch->enabled);
}

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;

	/* SR_CONF_SCAN_OPTIONS is always valid, regardless of sdi or channel group. */
	if (key == SR_CONF_SCAN_OPTIONS) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				dlm_scanopts, ARRAY_SIZE(dlm_scanopts), sizeof(uint32_t));
		return SR_OK;
	}

	/* If sdi is NULL, nothing except SR_CONF_DEVICE_OPTIONS can be provided. */
	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				dlm_drvopts, ARRAY_SIZE(dlm_drvopts), sizeof(uint32_t));
		return SR_OK;
	}

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;
	model = devc->model_config;

	/*
	 * If cg is NULL, only the SR_CONF_DEVICE_OPTIONS that are not
	 * specific to a channel group must be returned.
	 */
	if (!cg) {
		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					dlm_devopts, ARRAY_SIZE(dlm_devopts), sizeof(uint32_t));
			return SR_OK;
		case SR_CONF_TIMEBASE:
			*data = build_tuples(&dlm_timebases, ARRAY_SIZE(dlm_timebases));
			return SR_OK;
		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));
			return SR_OK;
		case SR_CONF_TRIGGER_SLOPE:
			*data = g_variant_new_strv(dlm_trigger_slopes,
					g_strv_length((char **)dlm_trigger_slopes));
			return SR_OK;
		case SR_CONF_NUM_HDIV:
			*data = g_variant_new_uint32(model->num_xdivs);
			return SR_OK;
		default:
			return SR_ERR_NA;
		}
	}

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

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		if (cg_type == CG_ANALOG) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				dlm_analog_devopts, ARRAY_SIZE(dlm_analog_devopts), sizeof(uint32_t));
		} else if (cg_type == CG_DIGITAL) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				dlm_digital_devopts, ARRAY_SIZE(dlm_digital_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_VDIV:
		if (cg_type == CG_NONE)
			return SR_ERR_CHANNEL_GROUP;
		*data = build_tuples(&dlm_vdivs, ARRAY_SIZE(dlm_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 dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	GSList *l;
	gboolean digital_added;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

	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;
	}

	/* 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)
{
	struct dev_context *devc;

	std_session_send_df_end(sdi);

	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;
}

static struct sr_dev_driver yokogawa_dlm_driver_info = {
	.name = "yokogawa-dlm",
	.longname = "Yokogawa DL/DLM",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_channel_set = config_channel_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(yokogawa_dlm_driver_info);
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
6ec6c43b	21	#include <config.h>
10763937	22	#include <stdlib.h>
5a1afc09	23	#include "scpi.h"
10763937 SA	24	#include "protocol.h"
10763937 SA	25
dd5c48a6	26	static struct sr_dev_driver yokogawa_dlm_driver_info;
8ab929d6	27
329733d9 UH	28	static const char *MANUFACTURER_ID = "YOKOGAWA";
329733d9 UH	29	static const char *MANUFACTURER_NAME = "Yokogawa";
8ab929d6	30
f3c60fb6 SA	31	static const uint32_t dlm_scanopts[] = {
	32	SR_CONF_CONN,
	33	};
	34
	35	static const uint32_t dlm_drvopts[] = {
cf0280fa AJ	36	SR_CONF_LOGIC_ANALYZER,
	37	SR_CONF_OSCILLOSCOPE,
	38	};
	39
f3c60fb6 SA	40	static const uint32_t dlm_devopts[] = {
	41	SR_CONF_LIMIT_FRAMES \| SR_CONF_GET \| SR_CONF_SET,
	42	SR_CONF_SAMPLERATE \| SR_CONF_GET,
	43	SR_CONF_TIMEBASE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	44	SR_CONF_NUM_HDIV \| SR_CONF_GET,
	45	SR_CONF_HORIZ_TRIGGERPOS \| SR_CONF_GET \| SR_CONF_SET,
f3c60fb6	46	SR_CONF_TRIGGER_SOURCE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
86621306	47	SR_CONF_TRIGGER_SLOPE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
f3c60fb6 SA	48	};
	49
	50	static const uint32_t dlm_analog_devopts[] = {
f3c60fb6	51	SR_CONF_NUM_VDIV \| SR_CONF_GET,
86621306 UH	52	SR_CONF_VDIV \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
86621306 UH	53	SR_CONF_COUPLING \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
f3c60fb6 SA	54	};
	55
	56	static const uint32_t dlm_digital_devopts[] = {
	57	};
	58
8ab929d6 SA	59	enum {
	60	CG_INVALID = -1,
	61	CG_NONE,
	62	CG_ANALOG,
	63	CG_DIGITAL,
	64	};
	65
8ab929d6 SA	66	static struct sr_dev_inst probe_usbtmc_device(struct sr_scpi_dev_inst scpi)
	67	{
	68	struct sr_dev_inst *sdi;
	69	struct dev_context *devc;
	70	struct sr_scpi_hw_info *hw_info;
	71	char *model_name;
	72	int model_index;
	73
	74	sdi = NULL;
	75	devc = NULL;
	76	hw_info = NULL;
	77
	78	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	79	sr_info("Couldn't get IDN response.");
	80	goto fail;
	81	}
	82
	83	if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
	84	goto fail;
	85
	86	if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
	87	goto fail;
	88
aac29cc1	89	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be UH	90	sdi->vendor = g_strdup(MANUFACTURER_NAME);
	91	sdi->model = g_strdup(model_name);
	92	sdi->version = g_strdup(hw_info->firmware_version);
8ab929d6	93
d1314831 SA	94	sdi->serial_num = g_strdup(hw_info->serial_number);
d1314831 SA	95
8ab929d6 SA	96	sr_scpi_hw_info_free(hw_info);
	97	hw_info = NULL;
	98
ac10a927	99	devc = g_malloc0(sizeof(struct dev_context));
8ab929d6	100
4f840ce9	101	sdi->driver = &yokogawa_dlm_driver_info;
8ab929d6 SA	102	sdi->priv = devc;
	103	sdi->inst_type = SR_INST_SCPI;
	104	sdi->conn = scpi;
	105
	106	if (dlm_device_init(sdi, model_index) != SR_OK)
	107	goto fail;
	108
8ab929d6 SA	109	return sdi;
	110
	111	fail:
7b365c47	112	sr_scpi_hw_info_free(hw_info);
4bf93988	113	sr_dev_inst_free(sdi);
b1f83103	114	g_free(devc);
8ab929d6 SA	115
	116	return NULL;
	117	}
	118
4f840ce9	119	static GSList scan(struct sr_dev_driver di, GSList *options)
8ab929d6	120	{
41812aca	121	return sr_scpi_scan(di->context, options, probe_usbtmc_device);
8ab929d6 SA	122	}
8ab929d6 SA	123
8ab929d6 SA	124	static void clear_helper(void *priv)
	125	{
	126	struct dev_context *devc;
	127
	128	devc = priv;
	129
	130	dlm_scope_state_destroy(devc->model_state);
	131
	132	g_free(devc->analog_groups);
	133	g_free(devc->digital_groups);
	134	g_free(devc);
	135	}
	136
4f840ce9	137	static int dev_clear(const struct sr_dev_driver *di)
8ab929d6 SA	138	{
	139	return std_dev_clear(di, clear_helper);
	140	}
	141
	142	static int dev_open(struct sr_dev_inst *sdi)
	143	{
	144	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	145	return SR_ERR;
	146
	147	if (dlm_scope_state_query(sdi) != SR_OK)
	148	return SR_ERR;
	149
	150	sdi->status = SR_ST_ACTIVE;
	151
	152	return SR_OK;
	153	}
	154
	155	static int dev_close(struct sr_dev_inst *sdi)
	156	{
8ab929d6 SA	157	sr_scpi_close(sdi->conn);
	158
	159	sdi->status = SR_ST_INACTIVE;
	160
	161	return SR_OK;
	162	}
	163
8ab929d6 SA	164	/**
	165	* Check which category a given channel group belongs to.
	166	*
	167	* @param devc Our internal device context.
a9308652	168	* @param cg The channel group to check.
8ab929d6	169	*
a9308652 UH	170	* @retval CG_NONE cg is NULL
a9308652 UH	171	* @retval CG_ANALOG cg is an analog group
8ab929d6 SA	172	* @retval CG_DIGITAL cg is a digital group
	173	* @retval CG_INVALID cg is something else
	174	*/
	175	static int check_channel_group(struct dev_context *devc,
ac10a927	176	const struct sr_channel_group *cg)
8ab929d6 SA	177	{
8ab929d6 SA	178	unsigned int i;
329733d9	179	const struct scope_config *model;
8ab929d6 SA	180
	181	model = devc->model_config;
	182
	183	if (!cg)
	184	return CG_NONE;
	185
a9308652	186	for (i = 0; i < model->analog_channels; i++)
8ab929d6 SA	187	if (cg == devc->analog_groups[i])
	188	return CG_ANALOG;
	189
a9308652	190	for (i = 0; i < model->pods; i++)
8ab929d6 SA	191	if (cg == devc->digital_groups[i])
	192	return CG_DIGITAL;
	193
	194	sr_err("Invalid channel group specified.");
	195	return CG_INVALID;
	196	}
	197
584560f1	198	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	199	const struct sr_channel_group *cg)
8ab929d6 SA	200	{
	201	int ret, cg_type;
	202	unsigned int i;
	203	struct dev_context *devc;
329733d9	204	const struct scope_config *model;
8ab929d6 SA	205	struct scope_state *state;
8ab929d6 SA	206
709468ba	207	if (!sdi)
8ab929d6 SA	208	return SR_ERR_ARG;
8ab929d6 SA	209
709468ba UH	210	devc = sdi->priv;
709468ba UH	211
8ab929d6 SA	212	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	213	return SR_ERR;
	214
8ab929d6 SA	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)",
f3c60fb6 SA	225	dlm_timebases[state->timebase][0],
f3c60fb6 SA	226	dlm_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
a9308652	249	for (i = 0; i < model->analog_channels; i++) {
8ab929d6 SA	250	if (cg != devc->analog_groups[i])
	251	continue;
	252	*data = g_variant_new("(tt)",
f3c60fb6 SA	253	dlm_vdivs[state->analog_states[i].vdiv][0],
f3c60fb6 SA	254	dlm_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:
f3c60fb6	264	*data = g_variant_new_string(dlm_trigger_slopes[state->trigger_slope]);
8ab929d6 SA	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
a9308652	279	for (i = 0; i < model->analog_channels; i++) {
8ab929d6 SA	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
f3c60fb6 SA	367	for (i = 0; i < ARRAY_SIZE(dlm_vdivs); i++) {
	368	if (p != dlm_vdivs[i][0] \|\|
	369	q != dlm_vdivs[i][1])
8ab929d6	370	continue;
a9308652	371	for (j = 1; j <= model->analog_channels; j++) {
8ab929d6 SA	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
f3c60fb6 SA	391	for (i = 0; i < ARRAY_SIZE(dlm_timebases); i++) {
	392	if (p != dlm_timebases[i][0] \|\|
	393	q != dlm_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) *
f3c60fb6 SA	412	((double) dlm_timebases[state->timebase][0] /
f3c60fb6 SA	413	dlm_timebases[state->timebase][1])
ac10a927	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;
a9308652	442	for (j = 1; j <= model->analog_channels; j++) {
8ab929d6 SA	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
c65a021c SA	471	static int config_channel_set(const struct sr_dev_inst *sdi,
	472	struct sr_channel *ch, unsigned int changes)
	473	{
a9308652	474	/* Currently we only handle SR_CHANNEL_SET_ENABLED. */
c65a021c SA	475	if (changes != SR_CHANNEL_SET_ENABLED)
	476	return SR_ERR_NA;
	477
	478	return dlm_channel_state_set(sdi, ch->index, ch->enabled);
	479	}
	480
584560f1	481	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	482	const struct sr_channel_group *cg)
8ab929d6	483	{
cf0280fa AJ	484	int cg_type = CG_NONE;
cf0280fa AJ	485	struct dev_context *devc = NULL;
329733d9	486	const struct scope_config *model = NULL;
8ab929d6	487
9a512113	488	/* SR_CONF_SCAN_OPTIONS is always valid, regardless of sdi or channel group. */
f3c60fb6 SA	489	if (key == SR_CONF_SCAN_OPTIONS) {
	490	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	491	dlm_scanopts, ARRAY_SIZE(dlm_scanopts), sizeof(uint32_t));
	492	return SR_OK;
	493	}
8ab929d6	494
f3c60fb6 SA	495	/* If sdi is NULL, nothing except SR_CONF_DEVICE_OPTIONS can be provided. */
	496	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
	497	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	498	dlm_drvopts, ARRAY_SIZE(dlm_drvopts), sizeof(uint32_t));
	499	return SR_OK;
cf0280fa	500	}
8ab929d6	501
f3c60fb6 SA	502	if (!sdi)
	503	return SR_ERR_ARG;
	504
	505	devc = sdi->priv;
	506	model = devc->model_config;
	507
a9308652 UH	508	/*
a9308652 UH	509	* If cg is NULL, only the SR_CONF_DEVICE_OPTIONS that are not
9a512113	510	* specific to a channel group must be returned.
a9308652	511	*/
f3c60fb6 SA	512	if (!cg) {
	513	switch (key) {
	514	case SR_CONF_DEVICE_OPTIONS:
	515	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	516	dlm_devopts, ARRAY_SIZE(dlm_devopts), sizeof(uint32_t));
	517	return SR_OK;
	518	case SR_CONF_TIMEBASE:
	519	*data = build_tuples(&dlm_timebases, ARRAY_SIZE(dlm_timebases));
	520	return SR_OK;
	521	case SR_CONF_TRIGGER_SOURCE:
	522	if (!model)
	523	return SR_ERR_ARG;
	524	data = g_variant_new_strv(model->trigger_sources,
	525	g_strv_length((char *)model->trigger_sources));
	526	return SR_OK;
	527	case SR_CONF_TRIGGER_SLOPE:
	528	*data = g_variant_new_strv(dlm_trigger_slopes,
	529	g_strv_length((char **)dlm_trigger_slopes));
	530	return SR_OK;
	531	case SR_CONF_NUM_HDIV:
49f49cb5	532	*data = g_variant_new_uint32(model->num_xdivs);
f3c60fb6 SA	533	return SR_OK;
	534	default:
	535	return SR_ERR_NA;
	536	}
	537	}
	538
	539	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	540	return SR_ERR;
	541
8ab929d6	542	switch (key) {
8ab929d6	543	case SR_CONF_DEVICE_OPTIONS:
f3c60fb6	544	if (cg_type == CG_ANALOG) {
584560f1	545	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f3c60fb6 SA	546	dlm_analog_devopts, ARRAY_SIZE(dlm_analog_devopts), sizeof(uint32_t));
	547	} else if (cg_type == CG_DIGITAL) {
	548	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	549	dlm_digital_devopts, ARRAY_SIZE(dlm_digital_devopts), sizeof(uint32_t));
8ab929d6	550	} else {
584560f1 BV	551	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
584560f1 BV	552	NULL, 0, sizeof(uint32_t));
8ab929d6 SA	553	}
	554	break;
	555	case SR_CONF_COUPLING:
	556	if (cg_type == CG_NONE)
	557	return SR_ERR_CHANNEL_GROUP;
	558	data = g_variant_new_strv(model->coupling_options,
ac10a927	559	g_strv_length((char *)model->coupling_options));
8ab929d6	560	break;
8ab929d6 SA	561	case SR_CONF_VDIV:
	562	if (cg_type == CG_NONE)
	563	return SR_ERR_CHANNEL_GROUP;
f3c60fb6	564	*data = build_tuples(&dlm_vdivs, ARRAY_SIZE(dlm_vdivs));
8ab929d6 SA	565	break;
	566	default:
	567	return SR_ERR_NA;
	568	}
	569
	570	return SR_OK;
	571	}
	572
	573	static int dlm_check_channels(GSList *channels)
	574	{
	575	GSList *l;
	576	struct sr_channel *ch;
	577	gboolean enabled_pod1, enabled_chan4;
	578
	579	enabled_pod1 = enabled_chan4 = FALSE;
	580
	581	/* Note: On the DLM2000, CH4 and Logic are shared. */
	582	/* TODO Handle non-DLM2000 models. */
	583	for (l = channels; l; l = l->next) {
	584	ch = l->data;
	585	switch (ch->type) {
	586	case SR_CHANNEL_ANALOG:
	587	if (ch->index == 3)
	588	enabled_chan4 = TRUE;
	589	break;
	590	case SR_CHANNEL_LOGIC:
	591	enabled_pod1 = TRUE;
	592	break;
	593	default:
	594	return SR_ERR;
	595	}
	596	}
	597
	598	if (enabled_pod1 && enabled_chan4)
	599	return SR_ERR;
	600
	601	return SR_OK;
	602	}
	603
695dc859	604	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
8ab929d6 SA	605	{
	606	GSList *l;
	607	gboolean digital_added;
	608	struct sr_channel *ch;
	609	struct dev_context *devc;
	610	struct sr_scpi_dev_inst *scpi;
	611
8ab929d6 SA	612	scpi = sdi->conn;
	613	devc = sdi->priv;
	614	digital_added = FALSE;
	615
	616	g_slist_free(devc->enabled_channels);
	617	devc->enabled_channels = NULL;
	618
	619	for (l = sdi->channels; l; l = l->next) {
	620	ch = l->data;
	621	if (!ch->enabled)
	622	continue;
	623	/* Only add a single digital channel. */
	624	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	625	devc->enabled_channels = g_slist_append(
ac10a927 SA	626	devc->enabled_channels, ch);
	627	if (ch->type == SR_CHANNEL_LOGIC)
	628	digital_added = TRUE;
8ab929d6 SA	629	}
	630	}
	631
	632	if (!devc->enabled_channels)
	633	return SR_ERR;
	634
	635	if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
	636	sr_err("Invalid channel configuration specified!");
	637	return SR_ERR_NA;
	638	}
	639
af3487ec SA	640	/* Request data for the first enabled channel. */
	641	devc->current_channel = devc->enabled_channels;
	642	dlm_channel_data_request(sdi);
	643
0028d5a1 SA	644	/* Call our callback when data comes in or after 5ms. */
0028d5a1 SA	645	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
8ab929d6 SA	646	dlm_data_receive, (void *)sdi);
	647
	648	return SR_OK;
	649	}
	650
695dc859	651	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
8ab929d6 SA	652	{
8ab929d6 SA	653	struct dev_context *devc;
8ab929d6	654
bee2b016	655	std_session_send_df_end(sdi);
8ab929d6	656
8ab929d6 SA	657	devc = sdi->priv;
	658
	659	devc->num_frames = 0;
	660	g_slist_free(devc->enabled_channels);
	661	devc->enabled_channels = NULL;
af3487ec SA	662
af3487ec SA	663	sr_scpi_source_remove(sdi->session, sdi->conn);
8ab929d6 SA	664
	665	return SR_OK;
	666	}
10763937	667
dd5c48a6	668	static struct sr_dev_driver yokogawa_dlm_driver_info = {
10763937	669	.name = "yokogawa-dlm",
ac10a927	670	.longname = "Yokogawa DL/DLM",
10763937	671	.api_version = 1,
c2fdcc25	672	.init = std_init,
700d6b64	673	.cleanup = std_cleanup,
8ab929d6	674	.scan = scan,
c01bf34c	675	.dev_list = std_dev_list,
8ab929d6 SA	676	.dev_clear = dev_clear,
	677	.config_get = config_get,
	678	.config_set = config_set,
c65a021c	679	.config_channel_set = config_channel_set,
8ab929d6 SA	680	.config_list = config_list,
	681	.dev_open = dev_open,
	682	.dev_close = dev_close,
	683	.dev_acquisition_start = dev_acquisition_start,
	684	.dev_acquisition_stop = dev_acquisition_stop,
41812aca	685	.context = NULL,
10763937	686	};
dd5c48a6	687	SR_REGISTER_DEV_DRIVER(yokogawa_dlm_driver_info);