[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 struct sr_dev_driver *di = &yokogawa_dlm_driver_info;

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

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

static int init(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;

	if (!(sdi = sr_dev_inst_new(SR_ST_ACTIVE, MANUFACTURER_NAME,
			model_name, NULL)))
		goto fail;

	sr_scpi_hw_info_free(hw_info);
	hw_info = NULL;

	devc = g_malloc0(sizeof(struct dev_context));

	sdi->driver = di;
	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);
	if (devc)
		g_free(devc);

	return NULL;
}

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

static GSList *dev_list(void)
{
	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(void)
{
	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(void)
{
	dev_clear();

	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;
	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;
	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_TIMEBASE:
		*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;
	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;
	struct dev_context *devc;
	struct scope_config *model;

	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;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		if (cg_type == CG_NONE) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				model->devopts, model->num_devopts, 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:
		*data = g_variant_new_strv(*model->trigger_sources,
				g_strv_length((char **)*model->trigger_sources));
		break;
	case SR_CONF_TRIGGER_SLOPE:
		*data = g_variant_new_strv(*model->trigger_slopes,
				g_strv_length((char **)*model->trigger_slopes));
		break;
	case SR_CONF_TIMEBASE:
		*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;
	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:
			if (ch->enabled)
				pod_enabled[ch->index / 8] = TRUE;

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

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

			state->digital_states[ch->index] = 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 SA	24	SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info;
	25	static struct sr_dev_driver *di = &yokogawa_dlm_driver_info;
	26
	27	static char *MANUFACTURER_ID = "YOKOGAWA";
	28	static char *MANUFACTURER_NAME = "Yokogawa";
	29
	30	enum {
	31	CG_INVALID = -1,
	32	CG_NONE,
	33	CG_ANALOG,
	34	CG_DIGITAL,
	35	};
	36
	37	static int init(struct sr_context *sr_ctx)
	38	{
	39	return std_init(sr_ctx, di, LOG_PREFIX);
	40	}
	41
	42	static struct sr_dev_inst probe_usbtmc_device(struct sr_scpi_dev_inst scpi)
	43	{
	44	struct sr_dev_inst *sdi;
	45	struct dev_context *devc;
	46	struct sr_scpi_hw_info *hw_info;
	47	char *model_name;
	48	int model_index;
	49
	50	sdi = NULL;
	51	devc = NULL;
	52	hw_info = NULL;
	53
	54	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	55	sr_info("Couldn't get IDN response.");
	56	goto fail;
	57	}
	58
	59	if (strcmp(hw_info->manufacturer, MANUFACTURER_ID) != 0)
	60	goto fail;
	61
	62	if (dlm_model_get(hw_info->model, &model_name, &model_index) != SR_OK)
	63	goto fail;
	64
aed4ad0b	65	if (!(sdi = sr_dev_inst_new(SR_ST_ACTIVE, MANUFACTURER_NAME,
ac10a927	66	model_name, NULL)))
8ab929d6 SA	67	goto fail;
	68
	69	sr_scpi_hw_info_free(hw_info);
	70	hw_info = NULL;
	71
ac10a927	72	devc = g_malloc0(sizeof(struct dev_context));
8ab929d6 SA	73
	74	sdi->driver = di;
	75	sdi->priv = devc;
	76	sdi->inst_type = SR_INST_SCPI;
	77	sdi->conn = scpi;
	78
	79	if (dlm_device_init(sdi, model_index) != SR_OK)
	80	goto fail;
	81
	82	sr_scpi_close(sdi->conn);
	83
	84	sdi->status = SR_ST_INACTIVE;
	85	return sdi;
	86
	87	fail:
	88	if (hw_info)
	89	sr_scpi_hw_info_free(hw_info);
	90	if (sdi)
	91	sr_dev_inst_free(sdi);
	92	if (devc)
	93	g_free(devc);
	94
	95	return NULL;
	96	}
	97
	98	static GSList scan(GSList options)
	99	{
	100	return sr_scpi_scan(di->priv, options, probe_usbtmc_device);
	101	}
	102
	103	static GSList *dev_list(void)
	104	{
	105	return ((struct drv_context *)(di->priv))->instances;
	106	}
	107
	108	static void clear_helper(void *priv)
	109	{
	110	struct dev_context *devc;
	111
	112	devc = priv;
	113
	114	dlm_scope_state_destroy(devc->model_state);
	115
	116	g_free(devc->analog_groups);
	117	g_free(devc->digital_groups);
	118	g_free(devc);
	119	}
	120
	121	static int dev_clear(void)
	122	{
	123	return std_dev_clear(di, clear_helper);
	124	}
	125
	126	static int dev_open(struct sr_dev_inst *sdi)
	127	{
	128	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	129	return SR_ERR;
	130
	131	if (dlm_scope_state_query(sdi) != SR_OK)
	132	return SR_ERR;
	133
	134	sdi->status = SR_ST_ACTIVE;
	135
	136	return SR_OK;
137	}
138
139	static int dev_close(struct sr_dev_inst *sdi)
140	{
141	if (sdi->status == SR_ST_INACTIVE)
142	return SR_OK;
143
144	sr_scpi_close(sdi->conn);
145
146	sdi->status = SR_ST_INACTIVE;
147
148	return SR_OK;
149	}
150
151	static int cleanup(void)
152	{
153	dev_clear();
154
155	return SR_OK;
156	}
157
158	/**
159	* Check which category a given channel group belongs to.
160	*
161	* @param devc Our internal device context.
162	* @param cg The channel group to check.
163	*
164	* @retval CG_NONE cg is NULL
165	* @retval CG_ANALOG cg is an analog group
166	* @retval CG_DIGITAL cg is a digital group
167	* @retval CG_INVALID cg is something else
168	*/
169	static int check_channel_group(struct dev_context *devc,
ac10a927	170	const struct sr_channel_group *cg)
8ab929d6 SA	171	{
	172	unsigned int i;
	173	struct scope_config *model;
	174
	175	model = devc->model_config;
	176
	177	if (!cg)
	178	return CG_NONE;
	179
	180	for (i = 0; i < model->analog_channels; ++i)
	181	if (cg == devc->analog_groups[i])
	182	return CG_ANALOG;
	183
	184	for (i = 0; i < model->pods; ++i)
	185	if (cg == devc->digital_groups[i])
	186	return CG_DIGITAL;
	187
	188	sr_err("Invalid channel group specified.");
	189	return CG_INVALID;
	190	}
	191
584560f1	192	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	193	const struct sr_channel_group *cg)
8ab929d6 SA	194	{
	195	int ret, cg_type;
	196	unsigned int i;
	197	struct dev_context *devc;
	198	struct scope_config *model;
	199	struct scope_state *state;
	200
	201	if (!sdi \|\| !(devc = sdi->priv))
	202	return SR_ERR_ARG;
	203
	204	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	205	return SR_ERR;
	206
	207	ret = SR_ERR_NA;
	208	model = devc->model_config;
	209	state = devc->model_state;
	210
	211	switch (key) {
	212	case SR_CONF_NUM_TIMEBASE:
	213	*data = g_variant_new_int32(model->num_xdivs);
	214	ret = SR_OK;
	215	break;
	216	case SR_CONF_TIMEBASE:
	217	*data = g_variant_new("(tt)",
ac10a927 SA	218	(*model->timebases)[state->timebase][0],
ac10a927 SA	219	(*model->timebases)[state->timebase][1]);
8ab929d6 SA	220	ret = SR_OK;
	221	break;
	222	case SR_CONF_NUM_VDIV:
	223	if (cg_type == CG_NONE) {
	224	sr_err("No channel group specified.");
	225	return SR_ERR_CHANNEL_GROUP;
	226	} else if (cg_type == CG_ANALOG) {
	227	*data = g_variant_new_int32(model->num_ydivs);
	228	ret = SR_OK;
	229	break;
	230	} else {
	231	ret = SR_ERR_NA;
	232	}
	233	break;
	234	case SR_CONF_VDIV:
	235	ret = SR_ERR_NA;
	236	if (cg_type == CG_NONE) {
	237	sr_err("No channel group specified.");
	238	return SR_ERR_CHANNEL_GROUP;
	239	} else if (cg_type != CG_ANALOG)
	240	break;
	241
	242	for (i = 0; i < model->analog_channels; ++i) {
	243	if (cg != devc->analog_groups[i])
	244	continue;
	245	*data = g_variant_new("(tt)",
ac10a927 SA	246	(*model->vdivs)[state->analog_states[i].vdiv][0],
ac10a927 SA	247	(*model->vdivs)[state->analog_states[i].vdiv][1]);
8ab929d6 SA	248	ret = SR_OK;
	249	break;
	250	}
	251	break;
	252	case SR_CONF_TRIGGER_SOURCE:
	253	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	254	ret = SR_OK;
	255	break;
	256	case SR_CONF_TRIGGER_SLOPE:
	257	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	258	ret = SR_OK;
	259	break;
	260	case SR_CONF_HORIZ_TRIGGERPOS:
	261	*data = g_variant_new_double(state->horiz_triggerpos);
	262	ret = SR_OK;
	263	break;
	264	case SR_CONF_COUPLING:
	265	ret = SR_ERR_NA;
	266	if (cg_type == CG_NONE) {
	267	sr_err("No channel group specified.");
	268	return SR_ERR_CHANNEL_GROUP;
	269	} else if (cg_type != CG_ANALOG)
	270	break;
	271
	272	for (i = 0; i < model->analog_channels; ++i) {
	273	if (cg != devc->analog_groups[i])
	274	continue;
	275	data = g_variant_new_string((model->coupling_options)[state->analog_states[i].coupling]);
	276	ret = SR_OK;
	277	break;
	278	}
	279	break;
	280	case SR_CONF_SAMPLERATE:
	281	*data = g_variant_new_uint64(state->sample_rate);
	282	ret = SR_OK;
	283	break;
	284	default:
	285	ret = SR_ERR_NA;
	286	}
	287
	288	return ret;
	289	}
	290
	291	static GVariant build_tuples(const uint64_t (array)[][2], unsigned int n)
	292	{
	293	unsigned int i;
	294	GVariant *rational[2];
	295	GVariantBuilder gvb;
	296
	297	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	298
	299	for (i = 0; i < n; i++) {
	300	rational[0] = g_variant_new_uint64((*array)[i][0]);
	301	rational[1] = g_variant_new_uint64((*array)[i][1]);
	302
	303	/* FIXME: Valgrind reports a memory leak here. */
	304	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	305	}
	306
	307	return g_variant_builder_end(&gvb);
	308	}
	309
584560f1	310	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
ac10a927	311	const struct sr_channel_group *cg)
8ab929d6 SA	312	{
	313	int ret, cg_type;
	314	unsigned int i, j;
	315	char float_str[30];
	316	struct dev_context *devc;
	317	struct scope_config *model;
	318	struct scope_state *state;
	319	const char *tmp;
	320	uint64_t p, q;
	321	double tmp_d;
	322	gboolean update_sample_rate;
	323
	324	if (!sdi \|\| !(devc = sdi->priv))
	325	return SR_ERR_ARG;
	326
	327	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	328	return SR_ERR;
	329
	330	model = devc->model_config;
	331	state = devc->model_state;
	332	update_sample_rate = FALSE;
	333
	334	ret = SR_ERR_NA;
	335
	336	switch (key) {
	337	case SR_CONF_LIMIT_FRAMES:
	338	devc->frame_limit = g_variant_get_uint64(data);
	339	ret = SR_OK;
	340	break;
	341	case SR_CONF_TRIGGER_SOURCE:
	342	tmp = g_variant_get_string(data, NULL);
	343	for (i = 0; (*model->trigger_sources)[i]; i++) {
	344	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	345	continue;
	346	state->trigger_source = i;
	347	/* TODO: A and B trigger support possible? */
	348	ret = dlm_trigger_source_set(sdi->conn, (*model->trigger_sources)[i]);
	349	break;
	350	}
	351	break;
	352	case SR_CONF_VDIV:
	353	if (cg_type == CG_NONE) {
	354	sr_err("No channel group specified.");
	355	return SR_ERR_CHANNEL_GROUP;
	356	}
	357
	358	g_variant_get(data, "(tt)", &p, &q);
	359
	360	for (i = 0; i < model->num_vdivs; i++) {
	361	if (p != (*model->vdivs)[i][0] \|\|
ac10a927	362	q != (*model->vdivs)[i][1])
8ab929d6 SA	363	continue;
	364	for (j = 1; j <= model->analog_channels; ++j) {
	365	if (cg != devc->analog_groups[j - 1])
	366	continue;
	367	state->analog_states[j - 1].vdiv = i;
	368	g_ascii_formatd(float_str, sizeof(float_str),
	369	"%E", (float) p / q);
	370	if (dlm_analog_chan_vdiv_set(sdi->conn, j, float_str) != SR_OK \|\|
ac10a927	371	sr_scpi_get_opc(sdi->conn) != SR_OK)
8ab929d6 SA	372	return SR_ERR;
	373
	374	break;
	375	}
	376
	377	ret = SR_OK;
	378	break;
	379	}
	380	break;
	381	case SR_CONF_TIMEBASE:
	382	g_variant_get(data, "(tt)", &p, &q);
	383
	384	for (i = 0; i < model->num_timebases; i++) {
	385	if (p != (*model->timebases)[i][0] \|\|
ac10a927	386	q != (*model->timebases)[i][1])
8ab929d6 SA	387	continue;
	388	state->timebase = i;
	389	g_ascii_formatd(float_str, sizeof(float_str),
	390	"%E", (float) p / q);
	391	ret = dlm_timebase_set(sdi->conn, float_str);
	392	update_sample_rate = TRUE;
	393	break;
	394	}
	395	break;
	396	case SR_CONF_HORIZ_TRIGGERPOS:
	397	tmp_d = g_variant_get_double(data);
	398
	399	/* TODO: Check if the calculation makes sense for the DLM. */
	400	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	401	return SR_ERR;
	402
	403	state->horiz_triggerpos = tmp_d;
	404	tmp_d = -(tmp_d - 0.5) *
ac10a927 SA	405	((double) (*model->timebases)[state->timebase][0] /
	406	(*model->timebases)[state->timebase][1])
	407	* model->num_xdivs;
8ab929d6 SA	408
	409	g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
	410	ret = dlm_horiz_trigger_pos_set(sdi->conn, float_str);
	411	break;
	412	case SR_CONF_TRIGGER_SLOPE:
	413	tmp = g_variant_get_string(data, NULL);
	414
	415	if (!tmp \|\| !(tmp[0] == 'f' \|\| tmp[0] == 'r'))
	416	return SR_ERR_ARG;
	417
	418	/* Note: See dlm_trigger_slopes[] in protocol.c. */
	419	state->trigger_slope = (tmp[0] == 'r') ?
	420	SLOPE_POSITIVE : SLOPE_NEGATIVE;
	421
	422	ret = dlm_trigger_slope_set(sdi->conn, state->trigger_slope);
	423	break;
	424	case SR_CONF_COUPLING:
	425	if (cg_type == CG_NONE) {
	426	sr_err("No channel group specified.");
	427	return SR_ERR_CHANNEL_GROUP;
	428	}
	429
	430	tmp = g_variant_get_string(data, NULL);
	431
	432	for (i = 0; (*model->coupling_options)[i]; i++) {
	433	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
	434	continue;
	435	for (j = 1; j <= model->analog_channels; ++j) {
	436	if (cg != devc->analog_groups[j - 1])
	437	continue;
	438	state->analog_states[j-1].coupling = i;
	439
	440	if (dlm_analog_chan_coupl_set(sdi->conn, j, tmp) != SR_OK \|\|
ac10a927	441	sr_scpi_get_opc(sdi->conn) != SR_OK)
8ab929d6 SA	442	return SR_ERR;
	443	break;
	444	}
	445
	446	ret = SR_OK;
	447	break;
	448	}
	449	break;
	450	default:
	451	ret = SR_ERR_NA;
	452	break;
	453	}
	454
	455	if (ret == SR_OK)
	456	ret = sr_scpi_get_opc(sdi->conn);
	457
	458	if (ret == SR_OK && update_sample_rate)
	459	ret = dlm_sample_rate_query(sdi);
	460
	461	return ret;
	462	}
	463
584560f1	464	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
ac10a927	465	const struct sr_channel_group *cg)
8ab929d6 SA	466	{
	467	int cg_type;
	468	struct dev_context *devc;
	469	struct scope_config *model;
	470
	471	if (!sdi \|\| !(devc = sdi->priv))
	472	return SR_ERR_ARG;
	473
	474	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	475	return SR_ERR;
	476
	477	model = devc->model_config;
	478
	479	switch (key) {
8ab929d6 SA	480	case SR_CONF_DEVICE_OPTIONS:
8ab929d6 SA	481	if (cg_type == CG_NONE) {
584560f1	482	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	483	model->devopts, model->num_devopts, sizeof(uint32_t));
8ab929d6	484	} else if (cg_type == CG_ANALOG) {
584560f1	485	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
af945a66	486	model->analog_devopts, model->num_analog_devopts, sizeof(uint32_t));
8ab929d6	487	} else {
584560f1 BV	488	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
584560f1 BV	489	NULL, 0, sizeof(uint32_t));
8ab929d6 SA	490	}
	491	break;
	492	case SR_CONF_COUPLING:
	493	if (cg_type == CG_NONE)
	494	return SR_ERR_CHANNEL_GROUP;
	495	data = g_variant_new_strv(model->coupling_options,
ac10a927	496	g_strv_length((char *)model->coupling_options));
8ab929d6 SA	497	break;
	498	case SR_CONF_TRIGGER_SOURCE:
	499	data = g_variant_new_strv(model->trigger_sources,
ac10a927	500	g_strv_length((char *)model->trigger_sources));
8ab929d6 SA	501	break;
	502	case SR_CONF_TRIGGER_SLOPE:
	503	data = g_variant_new_strv(model->trigger_slopes,
ac10a927	504	g_strv_length((char *)model->trigger_slopes));
8ab929d6 SA	505	break;
	506	case SR_CONF_TIMEBASE:
	507	*data = build_tuples(model->timebases, model->num_timebases);
	508	break;
	509	case SR_CONF_VDIV:
	510	if (cg_type == CG_NONE)
	511	return SR_ERR_CHANNEL_GROUP;
	512	*data = build_tuples(model->vdivs, model->num_vdivs);
	513	break;
	514	default:
	515	return SR_ERR_NA;
	516	}
	517
	518	return SR_OK;
	519	}
	520
	521	static int dlm_check_channels(GSList *channels)
	522	{
	523	GSList *l;
	524	struct sr_channel *ch;
	525	gboolean enabled_pod1, enabled_chan4;
	526
	527	enabled_pod1 = enabled_chan4 = FALSE;
	528
	529	/* Note: On the DLM2000, CH4 and Logic are shared. */
	530	/* TODO Handle non-DLM2000 models. */
	531	for (l = channels; l; l = l->next) {
	532	ch = l->data;
	533	switch (ch->type) {
	534	case SR_CHANNEL_ANALOG:
	535	if (ch->index == 3)
	536	enabled_chan4 = TRUE;
	537	break;
	538	case SR_CHANNEL_LOGIC:
	539	enabled_pod1 = TRUE;
	540	break;
	541	default:
	542	return SR_ERR;
	543	}
	544	}
	545
	546	if (enabled_pod1 && enabled_chan4)
	547	return SR_ERR;
	548
	549	return SR_OK;
	550	}
	551
	552	static int dlm_setup_channels(const struct sr_dev_inst *sdi)
	553	{
	554	GSList *l;
	555	unsigned int i;
	556	gboolean *pod_enabled, setup_changed;
	557	struct scope_state *state;
	558	struct scope_config *model;
	559	struct sr_channel *ch;
	560	struct dev_context *devc;
	561	struct sr_scpi_dev_inst *scpi;
	562
	563	devc = sdi->priv;
	564	scpi = sdi->conn;
	565	state = devc->model_state;
	566	model = devc->model_config;
	567	setup_changed = FALSE;
	568
ac10a927	569	pod_enabled = g_malloc0(sizeof(gboolean) * model->pods);
8ab929d6 SA	570
	571	for (l = sdi->channels; l; l = l->next) {
	572	ch = l->data;
	573	switch (ch->type) {
	574	case SR_CHANNEL_ANALOG:
	575	if (ch->enabled == state->analog_states[ch->index].state)
	576	break;
	577
	578	if (dlm_analog_chan_state_set(scpi, ch->index + 1,
ac10a927	579	ch->enabled) != SR_OK)
8ab929d6 SA	580	return SR_ERR;
	581
	582	state->analog_states[ch->index].state = ch->enabled;
	583	setup_changed = TRUE;
	584	break;
	585	case SR_CHANNEL_LOGIC:
	586	if (ch->enabled)
	587	pod_enabled[ch->index / 8] = TRUE;
	588
	589	if (ch->enabled == state->digital_states[ch->index])
	590	break;
	591
	592	if (dlm_digital_chan_state_set(scpi, ch->index + 1,
ac10a927	593	ch->enabled) != SR_OK)
8ab929d6 SA	594	return SR_ERR;
	595
	596	state->digital_states[ch->index] = ch->enabled;
	597	setup_changed = TRUE;
	598	break;
	599	default:
	600	return SR_ERR;
	601	}
	602	}
	603
	604	for (i = 1; i <= model->pods; ++i) {
	605	if (state->pod_states[i - 1] == pod_enabled[i - 1])
	606	continue;
	607
	608	if (dlm_digital_pod_state_set(scpi, i,
ac10a927	609	pod_enabled[i - 1]) != SR_OK)
8ab929d6 SA	610	return SR_ERR;
	611
	612	state->pod_states[i - 1] = pod_enabled[i - 1];
	613	setup_changed = TRUE;
	614	}
	615
	616	g_free(pod_enabled);
	617
	618	if (setup_changed && dlm_sample_rate_query(sdi) != SR_OK)
	619	return SR_ERR;
	620
	621	return SR_OK;
	622	}
	623
	624	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	625	{
	626	GSList *l;
	627	gboolean digital_added;
	628	struct sr_channel *ch;
	629	struct dev_context *devc;
	630	struct sr_scpi_dev_inst *scpi;
	631
	632	(void)cb_data;
	633
ac10a927 SA	634	if (sdi->status != SR_ST_ACTIVE)
ac10a927 SA	635	return SR_ERR_DEV_CLOSED;
8ab929d6 SA	636
	637	scpi = sdi->conn;
	638	devc = sdi->priv;
	639	digital_added = FALSE;
	640
	641	g_slist_free(devc->enabled_channels);
	642	devc->enabled_channels = NULL;
	643
	644	for (l = sdi->channels; l; l = l->next) {
	645	ch = l->data;
	646	if (!ch->enabled)
	647	continue;
	648	/* Only add a single digital channel. */
	649	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	650	devc->enabled_channels = g_slist_append(
ac10a927 SA	651	devc->enabled_channels, ch);
	652	if (ch->type == SR_CHANNEL_LOGIC)
	653	digital_added = TRUE;
8ab929d6 SA	654	}
	655	}
	656
	657	if (!devc->enabled_channels)
	658	return SR_ERR;
	659
	660	if (dlm_check_channels(devc->enabled_channels) != SR_OK) {
	661	sr_err("Invalid channel configuration specified!");
	662	return SR_ERR_NA;
	663	}
	664
	665	if (dlm_setup_channels(sdi) != SR_OK) {
	666	sr_err("Failed to setup channel configuration!");
	667	return SR_ERR;
	668	}
	669
af3487ec SA	670	/* Request data for the first enabled channel. */
	671	devc->current_channel = devc->enabled_channels;
	672	dlm_channel_data_request(sdi);
	673
0028d5a1 SA	674	/* Call our callback when data comes in or after 5ms. */
0028d5a1 SA	675	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 5,
8ab929d6 SA	676	dlm_data_receive, (void *)sdi);
	677
	678	return SR_OK;
	679	}
	680
	681	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	682	{
	683	struct dev_context *devc;
8ab929d6 SA	684	struct sr_datafeed_packet packet;
	685
	686	(void)cb_data;
	687
	688	packet.type = SR_DF_END;
	689	packet.payload = NULL;
	690	sr_session_send(sdi, &packet);
	691
	692	if (sdi->status != SR_ST_ACTIVE)
	693	return SR_ERR_DEV_CLOSED;
	694
	695	devc = sdi->priv;
	696
	697	devc->num_frames = 0;
	698	g_slist_free(devc->enabled_channels);
	699	devc->enabled_channels = NULL;
af3487ec SA	700
af3487ec SA	701	sr_scpi_source_remove(sdi->session, sdi->conn);
8ab929d6 SA	702
	703	return SR_OK;
	704	}
10763937 SA	705
	706	SR_PRIV struct sr_dev_driver yokogawa_dlm_driver_info = {
	707	.name = "yokogawa-dlm",
ac10a927	708	.longname = "Yokogawa DL/DLM",
10763937	709	.api_version = 1,
8ab929d6 SA	710	.init = init,
	711	.cleanup = cleanup,
	712	.scan = scan,
	713	.dev_list = dev_list,
	714	.dev_clear = dev_clear,
	715	.config_get = config_get,
	716	.config_set = config_set,
	717	.config_list = config_list,
	718	.dev_open = dev_open,
	719	.dev_close = dev_close,
	720	.dev_acquisition_start = dev_acquisition_start,
	721	.dev_acquisition_stop = dev_acquisition_stop,
10763937 SA	722	.priv = NULL,
10763937 SA	723	};