[libsigrok.git] / src / hardware / hung-chang-dso-2100 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Daniel Glöckner <daniel-gl@gmx.net>
 *
 * 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 <ieee1284.h>
#include <string.h>
#include "protocol.h"

SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info;

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

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

static const uint32_t devopts[] = {
	SR_CONF_CONN | SR_CONF_GET,
	SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	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,
	SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

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

static const uint64_t samplerates[] = {
	SR_MHZ(100), SR_MHZ(50),  SR_MHZ(25),   SR_MHZ(20),
	SR_MHZ(10),  SR_MHZ(5),   SR_KHZ(2500), SR_MHZ(2),
	SR_MHZ(1),   SR_KHZ(500), SR_KHZ(250),  SR_KHZ(200),
	SR_KHZ(100), SR_KHZ(50),  SR_KHZ(25),   SR_KHZ(20),
	SR_KHZ(10),  SR_KHZ(5),   SR_HZ(2500),  SR_KHZ(2),
	SR_KHZ(1),   SR_HZ(500),  SR_HZ(250),   SR_HZ(200),
	SR_HZ(100),  SR_HZ(50),   SR_HZ(25),    SR_HZ(20)
};

/* must be in sync with readout_steps[] in protocol.c */
static const uint64_t buffersizes[] = {
	2 * 500, 3 * 500, 4 * 500, 5 * 500,
	6 * 500, 7 * 500, 8 * 500, 9 * 500, 10 * 500,
	12 * 500 - 2, 14 * 500 - 2, 16 * 500 - 2,
	18 * 500 - 2, 20 * 500 - 2, 10240 - 2
};

static const uint64_t vdivs[][2] = {
	{ 10, 1000 },
	{ 20, 1000 },
	{ 50, 1000 },
	{ 100, 1000 },
	{ 200, 1000 },
	{ 500, 1000 },
	{ 1, 1 },
	{ 2, 1 },
	{ 5, 1 },
};

/* Bits 4 and 5 enable relays that add /10 filters to the chain
 * Bits 0 and 1 select an output from a resistor array */
static const uint8_t vdivs_map[] = {
	0x01, 0x02, 0x03, 0x21, 0x22, 0x23, 0x31, 0x32, 0x33
};


static const char *trigger_sources[] = {
	"A", "B", "EXT"
};

static const uint8_t trigger_sources_map[] = {
	0x00, 0x80, 0x40
};

static const char *trigger_slopes[] = {
	"f", "r"
};

static const char *coupling[] = {
	"DC", "AC", "GND"
};

static const uint8_t coupling_map[] = {
	0x00, 0x08, 0x04
};

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

static GSList *scan_port(GSList *devices, struct sr_dev_driver *di,
			 struct parport *port)
{
	struct sr_dev_inst *sdi;
	struct sr_channel *ch;
	struct sr_channel_group *cg;
	struct dev_context *devc;
	struct drv_context *drvc;
	int i;

	if (ieee1284_open(port, 0, &i) != E1284_OK) {
		sr_err("Can't open parallel port %s", port->name);
		goto fail1;
	}

	if ((i & (CAP1284_RAW | CAP1284_BYTE)) != (CAP1284_RAW | CAP1284_BYTE)) {
		sr_err("Parallel port %s does not provide low-level bidirection access",
		       port->name);
		goto fail2;
	}

	if (ieee1284_claim(port) != E1284_OK) {
		sr_err("Parallel port %s already in use", port->name);
		goto fail2;
	}

	if (!hung_chang_dso_2100_check_id(port))
		goto fail3;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup("Hung-Chang");
	sdi->model = g_strdup("DSO-2100");
	sdi->driver = di;
	drvc = di->context;
	sdi->inst_type = 0; /* FIXME */
	sdi->conn = port;
	ieee1284_ref(port);

	for (i = 0; i < NUM_CHANNELS; i++) {
		cg = g_malloc0(sizeof(struct sr_channel_group));
		cg->name = g_strdup(trigger_sources[i]);
		ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, FALSE, trigger_sources[i]);
		cg->channels = g_slist_append(cg->channels, ch);
		sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	}

	devc = g_malloc0(sizeof(struct dev_context));
	devc->enabled_channel = g_slist_append(NULL, NULL);
	devc->channel = 0;
	devc->rate = 0;
	devc->probe[0] = 10;
	devc->probe[1] = 10;
	devc->cctl[0] = 0x31; /* 1V/div, DC coupling, trigger on channel A*/
	devc->cctl[1] = 0x31; /* 1V/div, DC coupling, no tv sync trigger */
	devc->edge = 0;
	devc->tlevel = 0x80;
	devc->pos[0] = 0x80;
	devc->pos[1] = 0x80;
	devc->offset[0] = 0x80;
	devc->offset[1] = 0x80;
	devc->gain[0] = 0x80;
	devc->gain[1] = 0x80;
	devc->frame_limit = 0;
	devc->last_step = 0; /* buffersize = 1000 */
	sdi->priv = devc;

	drvc->instances = g_slist_append(drvc->instances, sdi);
	devices = g_slist_append(devices, sdi);

fail3:
	ieee1284_release(port);
fail2:
	ieee1284_close(port);
fail1:
	return devices;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct parport_list ports;
	struct sr_config *src;
	const char *conn = NULL;
	GSList *devices, *option;
	gboolean port_found;
	int i;


	for (option = options; option; option = option->next) {
		src = option->data;
		if (src->key == SR_CONF_CONN) {
			conn = g_variant_get_string(src->data, NULL);
			break;
		}
	}

	if (!conn)
		return NULL;

	if (ieee1284_find_ports(&ports, 0) != E1284_OK)
		return NULL;

	devices = NULL;
	port_found = FALSE;
	for (i = 0; i < ports.portc; i++)
		if (!strcmp(ports.portv[i]->name, conn)) {
			port_found = TRUE;
			devices = scan_port(devices, di, ports.portv[i]);
		}

	if (!port_found) {
		sr_err("Parallel port %s not found. Valid names are:", conn);
		for (i = 0; i < ports.portc; i++)
			sr_err("\t%s", ports.portv[i]->name);
	}

	ieee1284_free_ports(&ports);

	return devices;
}

static void clear_private(void *priv)
{
	struct dev_context *devc = priv;

	g_slist_free(devc->enabled_channel);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	struct drv_context *drvc = di->context;
	struct sr_dev_inst *sdi;
	GSList *l;

	if (drvc) {
		for (l = drvc->instances; l; l = l->next) {
			sdi = l->data;
			ieee1284_unref(sdi->conn);
		}
	}

	return std_dev_clear(di, clear_private);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	int i;

	if (sdi->status != SR_ST_INACTIVE)
		goto fail1;

	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
		goto fail1;

	if (ieee1284_claim(sdi->conn) != E1284_OK)
		goto fail2;

	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
		goto fail3;

	if (hung_chang_dso_2100_move_to(sdi, 1))
		goto fail3;

	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	if (!devc->samples)
		goto fail3;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;

fail3:
	hung_chang_dso_2100_reset_port(sdi->conn);
	ieee1284_release(sdi->conn);
fail2:
	ieee1284_close(sdi->conn);
fail1:
	return SR_ERR;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;

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

	g_free(devc->samples);
	hung_chang_dso_2100_reset_port(sdi->conn);
	ieee1284_release(sdi->conn);
	ieee1284_close(sdi->conn);
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int find_in_array(GVariant *data, const GVariantType *type,
			 const void *arr, int n)
{
	const char * const *sarr;
	const char *s;
	const uint64_t *u64arr;
	const uint8_t *u8arr;
	uint64_t u64;
	uint8_t u8;
	int i;

	if (!g_variant_is_of_type(data, type))
		return -1;

	switch (g_variant_classify(data)) {
	case G_VARIANT_CLASS_STRING:
		s = g_variant_get_string(data, NULL);
		sarr = arr;

		for (i = 0; i < n; i++)
			if (!strcmp(s, sarr[i]))
				return i;
		break;
	case G_VARIANT_CLASS_UINT64:
		u64 = g_variant_get_uint64(data);
		u64arr = arr;

		for (i = 0; i < n; i++)
			if (u64 == u64arr[i])
				return i;
		break;
	case G_VARIANT_CLASS_BYTE:
		u8 = g_variant_get_byte(data);
		u8arr = arr;

		for (i = 0; i < n; i++)
			if (u8 == u8arr[i])
				return i;
	default:
		break;
	}

	return -1;
}

static int reverse_map(uint8_t u, const uint8_t *arr, int n)
{
	GVariant *v = g_variant_new_byte(u);
	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	g_variant_unref(v);
	return i;
}

static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc = sdi->priv;
	struct parport *port;
	int ret, i, ch = -1;

	if (cg) /* sr_config_get will validate cg using config_list */
		ch = ((struct sr_channel *)cg->channels->data)->index;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_CONN:
		port = sdi->conn;
		*data = g_variant_new_string(port->name);
		break;
	case SR_CONF_LIMIT_FRAMES:
		*data = g_variant_new_uint64(devc->frame_limit);
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(samplerates[devc->rate]);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
				ARRAY_SIZE(trigger_sources_map));
		if (i == -1)
			ret = SR_ERR;
		else
			*data = g_variant_new_string(trigger_sources[i]);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		if (devc->edge >= ARRAY_SIZE(trigger_slopes))
			ret = SR_ERR;
		else
			*data = g_variant_new_string(trigger_slopes[devc->edge]);
		break;
	case SR_CONF_BUFFERSIZE:
		*data = g_variant_new_uint64(buffersizes[devc->last_step]);
		break;
	case SR_CONF_VDIV:
		if (ch == -1) {
			ret = SR_ERR_CHANNEL_GROUP;
		} else {
			i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
					ARRAY_SIZE(vdivs_map));
			if (i == -1)
				ret = SR_ERR;
			else
				*data = g_variant_new("(tt)", vdivs[i][0],
						      vdivs[i][1]);
		}
		break;
	case SR_CONF_COUPLING:
		if (ch == -1) {
			ret = SR_ERR_CHANNEL_GROUP;
		} else {
			i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
					ARRAY_SIZE(coupling_map));
			if (i == -1)
				ret = SR_ERR;
			else
				*data = g_variant_new_string(coupling[i]);
		}
		break;
	case SR_CONF_PROBE_FACTOR:
		if (ch == -1)
			ret = SR_ERR_CHANNEL_GROUP;
		else
			*data = g_variant_new_uint64(devc->probe[ch]);
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc = sdi->priv;
	int ret, i, ch = -1;
	uint64_t u, v;

	if (cg) /* sr_config_set will validate cg using config_list */
		ch = ((struct sr_channel *)cg->channels->data)->index;

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

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_FRAMES:
		devc->frame_limit = g_variant_get_uint64(data);
		break;
	case SR_CONF_SAMPLERATE:
		i = find_in_array(data, G_VARIANT_TYPE_UINT64,
				  samplerates, ARRAY_SIZE(samplerates));
		if (i == -1)
			ret = SR_ERR_ARG;
		else
			devc->rate = i;
		break;
	case SR_CONF_TRIGGER_SOURCE:
		i = find_in_array(data, G_VARIANT_TYPE_STRING,
				  trigger_sources, ARRAY_SIZE(trigger_sources));
		if (i == -1)
			ret = SR_ERR_ARG;
		else
			devc->cctl[0] = (devc->cctl[0] & 0x3F)
				      | trigger_sources_map[i];
		break;
	case SR_CONF_TRIGGER_SLOPE:
		i = find_in_array(data, G_VARIANT_TYPE_STRING,
				  trigger_slopes, ARRAY_SIZE(trigger_slopes));
		if (i == -1)
			ret = SR_ERR_ARG;
		else
			devc->edge = i;
		break;
	case SR_CONF_BUFFERSIZE:
		i = find_in_array(data, G_VARIANT_TYPE_UINT64,
				  buffersizes, ARRAY_SIZE(buffersizes));
		if (i == -1)
			ret = SR_ERR_ARG;
		else
			devc->last_step = i;
		break;
	case SR_CONF_VDIV:
		if (ch == -1) {
			ret = SR_ERR_CHANNEL_GROUP;
		} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
			ret = SR_ERR_ARG;
		} else {
			g_variant_get(data, "(tt)", &u, &v);
			for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
				if (vdivs[i][0] == u && vdivs[i][1] == v)
					break;
			if (i == ARRAY_SIZE(vdivs))
				ret = SR_ERR_ARG;
			else
				devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
					       | vdivs_map[i];
		}
		break;
	case SR_CONF_COUPLING:
		if (ch == -1) {
			ret = SR_ERR_CHANNEL_GROUP;
		} else {
			i = find_in_array(data, G_VARIANT_TYPE_STRING,
					  coupling, ARRAY_SIZE(coupling));
			if (i == -1)
				ret = SR_ERR_ARG;
			else
				devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
					       | coupling_map[i];
		}
		break;
	case SR_CONF_PROBE_FACTOR:
		if (ch == -1) {
			ret = SR_ERR_CHANNEL_GROUP;
		} else {
			u = g_variant_get_uint64(data);
			if (!u)
				ret = SR_ERR_ARG;
			else
				devc->probe[ch] = u;
		}
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_channel_set(const struct sr_dev_inst *sdi,
			      struct sr_channel *ch,
			      unsigned int changes)
{
	struct dev_context *devc = sdi->priv;
	uint8_t v;

	if (changes & SR_CHANNEL_SET_ENABLED) {
		if (ch->enabled) {
			v = devc->channel | (1 << ch->index);
			if (v & (v - 1))
				return SR_ERR;
			devc->channel = v;
			devc->enabled_channel->data = ch;
		} else {
			devc->channel &= ~(1 << ch->index);
		}
	}
	return SR_OK;
}

static int config_commit(const struct sr_dev_inst *sdi)
{
	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
	int ret;

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

	switch (state) {
	case 0x03:
	case 0x14:
	case 0x21:
		/* we will travel the complete config path on our way to state 1 */
		break;
	case 0x00:
		state = 0x01;
	default:
		ret = hung_chang_dso_2100_move_to(sdi, 1);
		if (ret != SR_OK)
			return ret;
	case 0x01:
		hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	}
	ret = hung_chang_dso_2100_move_to(sdi, 1);
	if (ret != SR_OK)
		return ret;
	return hung_chang_dso_2100_move_to(sdi, state);
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	GVariantBuilder gvb;
	GVariant *gvar, *rational[2];
	GSList *l;
	int i;

	switch (key) {
		case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		break;
	case SR_CONF_SAMPLERATE:
	case SR_CONF_TRIGGER_SOURCE:
	case SR_CONF_TRIGGER_SLOPE:
	case SR_CONF_BUFFERSIZE:
		if (!sdi || cg)
			return SR_ERR_NA;
		break;
	case SR_CONF_VDIV:
	case SR_CONF_COUPLING:
		if (!sdi)
			return SR_ERR_NA;
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		l = g_slist_find(sdi->channel_groups, cg);
		if (!l)
			return SR_ERR_ARG;
		break;
	default:
		return SR_ERR_NA;
	}

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		if (!sdi)
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		else if (!cg)
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
		else
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
		break;
	case SR_CONF_SAMPLERATE:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
		gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
				samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
		break;
	case SR_CONF_TRIGGER_SLOPE:
		*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
		break;
	case SR_CONF_BUFFERSIZE:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
				buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
		break;
	case SR_CONF_VDIV:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
			rational[0] = g_variant_new_uint64(vdivs[i][0]);
			rational[1] = g_variant_new_uint64(vdivs[i][1]);
			gvar = g_variant_new_tuple(rational, 2);
			g_variant_builder_add_value(&gvb, gvar);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_COUPLING:
		*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
		break;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	int ret;

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

	if (devc->channel) {
		static const float res_array[] = {0.5, 1, 2, 5};
		static const uint8_t relays[] = {100, 10, 10, 1};
		devc->factor = devc->probe[devc->channel - 1] / 32.0;
		devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
		devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	}
	devc->frame = 0;
	devc->state_known = TRUE;
	devc->step = 0;
	devc->adc2 = FALSE;
	devc->retries = MAX_RETRIES;

	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	if (ret != SR_OK)
		return ret;

	std_session_send_df_header(sdi, LOG_PREFIX);

	sr_session_source_add(sdi->session, -1, 0, 8,
			      hung_chang_dso_2100_poll, (void *)sdi);

	return SR_OK;
}

SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
{
	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	std_session_send_df_end(sdi, LOG_PREFIX);
	sr_session_source_remove(sdi->session, -1);
	hung_chang_dso_2100_move_to(sdi, 1);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	return hung_chang_dso_2100_dev_acquisition_stop(sdi);
}

SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
	.name = "hung-chang-dso-2100",
	.longname = "Hung-Chang DSO-2100",
	.api_version = 1,
	.init = 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_commit = config_commit,
	.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,
};
Commit	Line	Data
05ac4a98 DG	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2015 Daniel Glöckner <daniel-gl@gmx.net>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
6ec6c43b	20	#include <config.h>
c9404469 DG	21	#include <ieee1284.h>
c9404469 DG	22	#include <string.h>
05ac4a98 DG	23	#include "protocol.h"
	24
	25	SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info;
	26
c9404469 DG	27	static const uint32_t scanopts[] = {
	28	SR_CONF_CONN,
	29	};
	30
	31	static const uint32_t drvopts[] = {
	32	SR_CONF_OSCILLOSCOPE,
	33	};
	34
	35	static const uint32_t devopts[] = {
	36	SR_CONF_CONN \| SR_CONF_GET,
	37	SR_CONF_LIMIT_FRAMES \| SR_CONF_GET \| SR_CONF_SET,
	38	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	39	SR_CONF_TRIGGER_SOURCE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	40	SR_CONF_TRIGGER_SLOPE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	41	SR_CONF_BUFFERSIZE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	42	};
	43
	44	static const uint32_t cgopts[] = {
	45	SR_CONF_VDIV \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	46	SR_CONF_COUPLING \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	47	SR_CONF_PROBE_FACTOR \| SR_CONF_GET \| SR_CONF_SET,
	48	};
	49
	50	static const uint64_t samplerates[] = {
	51	SR_MHZ(100), SR_MHZ(50), SR_MHZ(25), SR_MHZ(20),
	52	SR_MHZ(10), SR_MHZ(5), SR_KHZ(2500), SR_MHZ(2),
	53	SR_MHZ(1), SR_KHZ(500), SR_KHZ(250), SR_KHZ(200),
	54	SR_KHZ(100), SR_KHZ(50), SR_KHZ(25), SR_KHZ(20),
	55	SR_KHZ(10), SR_KHZ(5), SR_HZ(2500), SR_KHZ(2),
	56	SR_KHZ(1), SR_HZ(500), SR_HZ(250), SR_HZ(200),
	57	SR_HZ(100), SR_HZ(50), SR_HZ(25), SR_HZ(20)
	58	};
	59
	60	/* must be in sync with readout_steps[] in protocol.c */
	61	static const uint64_t buffersizes[] = {
	62	2 * 500, 3 * 500, 4 * 500, 5 * 500,
	63	6 * 500, 7 * 500, 8 * 500, 9 * 500, 10 * 500,
	64	12 * 500 - 2, 14 * 500 - 2, 16 * 500 - 2,
	65	18 * 500 - 2, 20 * 500 - 2, 10240 - 2
	66	};
	67
	68	static const uint64_t vdivs[][2] = {
	69	{ 10, 1000 },
	70	{ 20, 1000 },
	71	{ 50, 1000 },
	72	{ 100, 1000 },
	73	{ 200, 1000 },
	74	{ 500, 1000 },
	75	{ 1, 1 },
	76	{ 2, 1 },
	77	{ 5, 1 },
	78	};
	79
	80	/* Bits 4 and 5 enable relays that add /10 filters to the chain
	81	* Bits 0 and 1 select an output from a resistor array */
	82	static const uint8_t vdivs_map[] = {
	83	0x01, 0x02, 0x03, 0x21, 0x22, 0x23, 0x31, 0x32, 0x33
	84	};
	85
	86
	87	static const char *trigger_sources[] = {
	88	"A", "B", "EXT"
	89	};
	90
91	static const uint8_t trigger_sources_map[] = {
92	0x00, 0x80, 0x40
93	};
94
95	static const char *trigger_slopes[] = {
96	"f", "r"
97	};
98
99	static const char *coupling[] = {
100	"DC", "AC", "GND"
101	};
102
103	static const uint8_t coupling_map[] = {
104	0x00, 0x08, 0x04
105	};
106
05ac4a98 DG	107	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	108	{
	109	return std_init(sr_ctx, di, LOG_PREFIX);
	110	}
	111
c9404469 DG	112	static GSList scan_port(GSList devices, struct sr_dev_driver *di,
c9404469 DG	113	struct parport *port)
05ac4a98	114	{
c9404469 DG	115	struct sr_dev_inst *sdi;
	116	struct sr_channel *ch;
	117	struct sr_channel_group *cg;
	118	struct dev_context *devc;
05ac4a98	119	struct drv_context *drvc;
c9404469	120	int i;
05ac4a98	121
c9404469 DG	122	if (ieee1284_open(port, 0, &i) != E1284_OK) {
	123	sr_err("Can't open parallel port %s", port->name);
	124	goto fail1;
	125	}
05ac4a98	126
c9404469 DG	127	if ((i & (CAP1284_RAW \| CAP1284_BYTE)) != (CAP1284_RAW \| CAP1284_BYTE)) {
	128	sr_err("Parallel port %s does not provide low-level bidirection access",
	129	port->name);
	130	goto fail2;
	131	}
	132
	133	if (ieee1284_claim(port) != E1284_OK) {
	134	sr_err("Parallel port %s already in use", port->name);
	135	goto fail2;
	136	}
	137
	138	if (!hung_chang_dso_2100_check_id(port))
	139	goto fail3;
	140
	141	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	142	sdi->status = SR_ST_INACTIVE;
	143	sdi->vendor = g_strdup("Hung-Chang");
	144	sdi->model = g_strdup("DSO-2100");
	145	sdi->driver = di;
05ac4a98	146	drvc = di->context;
c9404469 DG	147	sdi->inst_type = 0; /* FIXME */
	148	sdi->conn = port;
	149	ieee1284_ref(port);
	150
	151	for (i = 0; i < NUM_CHANNELS; i++) {
	152	cg = g_malloc0(sizeof(struct sr_channel_group));
	153	cg->name = g_strdup(trigger_sources[i]);
	154	ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, FALSE, trigger_sources[i]);
	155	cg->channels = g_slist_append(cg->channels, ch);
	156	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	157	}
	158
	159	devc = g_malloc0(sizeof(struct dev_context));
	160	devc->enabled_channel = g_slist_append(NULL, NULL);
	161	devc->channel = 0;
	162	devc->rate = 0;
	163	devc->probe[0] = 10;
	164	devc->probe[1] = 10;
	165	devc->cctl[0] = 0x31; /* 1V/div, DC coupling, trigger on channel A*/
	166	devc->cctl[1] = 0x31; /* 1V/div, DC coupling, no tv sync trigger */
	167	devc->edge = 0;
	168	devc->tlevel = 0x80;
	169	devc->pos[0] = 0x80;
	170	devc->pos[1] = 0x80;
	171	devc->offset[0] = 0x80;
	172	devc->offset[1] = 0x80;
	173	devc->gain[0] = 0x80;
	174	devc->gain[1] = 0x80;
	175	devc->frame_limit = 0;
	176	devc->last_step = 0; /* buffersize = 1000 */
	177	sdi->priv = devc;
	178
	179	drvc->instances = g_slist_append(drvc->instances, sdi);
	180	devices = g_slist_append(devices, sdi);
	181
	182	fail3:
	183	ieee1284_release(port);
	184	fail2:
	185	ieee1284_close(port);
	186	fail1:
	187	return devices;
	188	}
	189
	190	static GSList scan(struct sr_dev_driver di, GSList *options)
	191	{
	192	struct parport_list ports;
	193	struct sr_config *src;
	194	const char *conn = NULL;
	195	GSList devices, option;
	196	gboolean port_found;
	197	int i;
	198
	199
	200	for (option = options; option; option = option->next) {
	201	src = option->data;
	202	if (src->key == SR_CONF_CONN) {
	203	conn = g_variant_get_string(src->data, NULL);
	204	break;
	205	}
	206	}
	207
	208	if (!conn)
	209	return NULL;
05ac4a98	210
c9404469 DG	211	if (ieee1284_find_ports(&ports, 0) != E1284_OK)
	212	return NULL;
	213
	214	devices = NULL;
	215	port_found = FALSE;
	216	for (i = 0; i < ports.portc; i++)
	217	if (!strcmp(ports.portv[i]->name, conn)) {
	218	port_found = TRUE;
	219	devices = scan_port(devices, di, ports.portv[i]);
	220	}
	221
	222	if (!port_found) {
	223	sr_err("Parallel port %s not found. Valid names are:", conn);
	224	for (i = 0; i < ports.portc; i++)
	225	sr_err("\t%s", ports.portv[i]->name);
	226	}
	227
	228	ieee1284_free_ports(&ports);
05ac4a98 DG	229
	230	return devices;
	231	}
	232
c9404469 DG	233	static void clear_private(void *priv)
	234	{
	235	struct dev_context *devc = priv;
	236
	237	g_slist_free(devc->enabled_channel);
	238	}
	239
05ac4a98 DG	240	static int dev_clear(const struct sr_dev_driver *di)
05ac4a98 DG	241	{
c9404469 DG	242	struct drv_context *drvc = di->context;
	243	struct sr_dev_inst *sdi;
	244	GSList *l;
	245
	246	if (drvc) {
	247	for (l = drvc->instances; l; l = l->next) {
	248	sdi = l->data;
	249	ieee1284_unref(sdi->conn);
	250	}
	251	}
	252
	253	return std_dev_clear(di, clear_private);
05ac4a98 DG	254	}
	255
	256	static int dev_open(struct sr_dev_inst *sdi)
	257	{
c9404469 DG	258	struct dev_context *devc = sdi->priv;
	259	int i;
	260
	261	if (sdi->status != SR_ST_INACTIVE)
	262	goto fail1;
	263
	264	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
	265	goto fail1;
05ac4a98	266
c9404469 DG	267	if (ieee1284_claim(sdi->conn) != E1284_OK)
	268	goto fail2;
	269
	270	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
	271	goto fail3;
	272
	273	if (hung_chang_dso_2100_move_to(sdi, 1))
	274	goto fail3;
	275
	276	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	277	if (!devc->samples)
	278	goto fail3;
05ac4a98 DG	279
	280	sdi->status = SR_ST_ACTIVE;
	281
	282	return SR_OK;
c9404469 DG	283
	284	fail3:
	285	hung_chang_dso_2100_reset_port(sdi->conn);
	286	ieee1284_release(sdi->conn);
	287	fail2:
	288	ieee1284_close(sdi->conn);
	289	fail1:
	290	return SR_ERR;
05ac4a98 DG	291	}
	292
	293	static int dev_close(struct sr_dev_inst *sdi)
	294	{
c9404469	295	struct dev_context *devc = sdi->priv;
05ac4a98	296
c9404469 DG	297	if (sdi->status != SR_ST_ACTIVE)
c9404469 DG	298	return SR_OK;
05ac4a98	299
c9404469 DG	300	g_free(devc->samples);
	301	hung_chang_dso_2100_reset_port(sdi->conn);
	302	ieee1284_release(sdi->conn);
	303	ieee1284_close(sdi->conn);
05ac4a98 DG	304	sdi->status = SR_ST_INACTIVE;
	305
	306	return SR_OK;
	307	}
	308
c9404469 DG	309	static int find_in_array(GVariant data, const GVariantType type,
	310	const void *arr, int n)
	311	{
	312	const char * const *sarr;
	313	const char *s;
	314	const uint64_t *u64arr;
	315	const uint8_t *u8arr;
	316	uint64_t u64;
	317	uint8_t u8;
	318	int i;
	319
	320	if (!g_variant_is_of_type(data, type))
	321	return -1;
	322
	323	switch (g_variant_classify(data)) {
	324	case G_VARIANT_CLASS_STRING:
	325	s = g_variant_get_string(data, NULL);
	326	sarr = arr;
	327
	328	for (i = 0; i < n; i++)
	329	if (!strcmp(s, sarr[i]))
	330	return i;
	331	break;
	332	case G_VARIANT_CLASS_UINT64:
	333	u64 = g_variant_get_uint64(data);
	334	u64arr = arr;
	335
	336	for (i = 0; i < n; i++)
	337	if (u64 == u64arr[i])
	338	return i;
	339	break;
	340	case G_VARIANT_CLASS_BYTE:
	341	u8 = g_variant_get_byte(data);
	342	u8arr = arr;
	343
	344	for (i = 0; i < n; i++)
	345	if (u8 == u8arr[i])
	346	return i;
	347	default:
	348	break;
	349	}
	350
	351	return -1;
	352	}
	353
	354	static int reverse_map(uint8_t u, const uint8_t *arr, int n)
	355	{
	356	GVariant *v = g_variant_new_byte(u);
	357	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	358	g_variant_unref(v);
	359	return i;
05ac4a98 DG	360	}
	361
	362	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	363	const struct sr_channel_group *cg)
	364	{
c9404469 DG	365	struct dev_context *devc = sdi->priv;
	366	struct parport *port;
	367	int ret, i, ch = -1;
05ac4a98	368
c9404469 DG	369	if (cg) /* sr_config_get will validate cg using config_list */
c9404469 DG	370	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	371
	372	ret = SR_OK;
	373	switch (key) {
c9404469 DG	374	case SR_CONF_CONN:
	375	port = sdi->conn;
	376	*data = g_variant_new_string(port->name);
	377	break;
	378	case SR_CONF_LIMIT_FRAMES:
	379	*data = g_variant_new_uint64(devc->frame_limit);
	380	break;
	381	case SR_CONF_SAMPLERATE:
	382	*data = g_variant_new_uint64(samplerates[devc->rate]);
	383	break;
	384	case SR_CONF_TRIGGER_SOURCE:
	385	i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
	386	ARRAY_SIZE(trigger_sources_map));
	387	if (i == -1)
	388	ret = SR_ERR;
	389	else
	390	*data = g_variant_new_string(trigger_sources[i]);
	391	break;
	392	case SR_CONF_TRIGGER_SLOPE:
	393	if (devc->edge >= ARRAY_SIZE(trigger_slopes))
	394	ret = SR_ERR;
	395	else
	396	*data = g_variant_new_string(trigger_slopes[devc->edge]);
	397	break;
	398	case SR_CONF_BUFFERSIZE:
	399	*data = g_variant_new_uint64(buffersizes[devc->last_step]);
	400	break;
	401	case SR_CONF_VDIV:
	402	if (ch == -1) {
	403	ret = SR_ERR_CHANNEL_GROUP;
	404	} else {
	405	i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
	406	ARRAY_SIZE(vdivs_map));
	407	if (i == -1)
	408	ret = SR_ERR;
	409	else
	410	*data = g_variant_new("(tt)", vdivs[i][0],
	411	vdivs[i][1]);
	412	}
	413	break;
	414	case SR_CONF_COUPLING:
	415	if (ch == -1) {
	416	ret = SR_ERR_CHANNEL_GROUP;
	417	} else {
	418	i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
	419	ARRAY_SIZE(coupling_map));
	420	if (i == -1)
	421	ret = SR_ERR;
	422	else
	423	*data = g_variant_new_string(coupling[i]);
	424	}
	425	break;
	426	case SR_CONF_PROBE_FACTOR:
	427	if (ch == -1)
	428	ret = SR_ERR_CHANNEL_GROUP;
	429	else
	430	*data = g_variant_new_uint64(devc->probe[ch]);
	431	break;
05ac4a98	432	default:
c9404469	433	ret = SR_ERR_NA;
05ac4a98 DG	434	}
	435
	436	return ret;
	437	}
	438
	439	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	440	const struct sr_channel_group *cg)
	441	{
c9404469 DG	442	struct dev_context *devc = sdi->priv;
	443	int ret, i, ch = -1;
	444	uint64_t u, v;
05ac4a98	445
c9404469 DG	446	if (cg) /* sr_config_set will validate cg using config_list */
c9404469 DG	447	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	448
	449	if (sdi->status != SR_ST_ACTIVE)
	450	return SR_ERR_DEV_CLOSED;
	451
	452	ret = SR_OK;
	453	switch (key) {
c9404469 DG	454	case SR_CONF_LIMIT_FRAMES:
	455	devc->frame_limit = g_variant_get_uint64(data);
	456	break;
	457	case SR_CONF_SAMPLERATE:
	458	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	459	samplerates, ARRAY_SIZE(samplerates));
	460	if (i == -1)
	461	ret = SR_ERR_ARG;
	462	else
	463	devc->rate = i;
	464	break;
	465	case SR_CONF_TRIGGER_SOURCE:
	466	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	467	trigger_sources, ARRAY_SIZE(trigger_sources));
	468	if (i == -1)
	469	ret = SR_ERR_ARG;
	470	else
	471	devc->cctl[0] = (devc->cctl[0] & 0x3F)
	472	\| trigger_sources_map[i];
	473	break;
	474	case SR_CONF_TRIGGER_SLOPE:
	475	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	476	trigger_slopes, ARRAY_SIZE(trigger_slopes));
	477	if (i == -1)
	478	ret = SR_ERR_ARG;
	479	else
	480	devc->edge = i;
	481	break;
	482	case SR_CONF_BUFFERSIZE:
	483	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	484	buffersizes, ARRAY_SIZE(buffersizes));
	485	if (i == -1)
	486	ret = SR_ERR_ARG;
	487	else
	488	devc->last_step = i;
	489	break;
	490	case SR_CONF_VDIV:
	491	if (ch == -1) {
	492	ret = SR_ERR_CHANNEL_GROUP;
	493	} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
	494	ret = SR_ERR_ARG;
	495	} else {
	496	g_variant_get(data, "(tt)", &u, &v);
	497	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
	498	if (vdivs[i][0] == u && vdivs[i][1] == v)
	499	break;
	500	if (i == ARRAY_SIZE(vdivs))
	501	ret = SR_ERR_ARG;
	502	else
	503	devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
	504	\| vdivs_map[i];
	505	}
	506	break;
	507	case SR_CONF_COUPLING:
	508	if (ch == -1) {
	509	ret = SR_ERR_CHANNEL_GROUP;
	510	} else {
	511	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	512	coupling, ARRAY_SIZE(coupling));
	513	if (i == -1)
	514	ret = SR_ERR_ARG;
	515	else
	516	devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
	517	\| coupling_map[i];
518	}
519	break;
520	case SR_CONF_PROBE_FACTOR:
521	if (ch == -1) {
522	ret = SR_ERR_CHANNEL_GROUP;
523	} else {
524	u = g_variant_get_uint64(data);
525	if (!u)
526	ret = SR_ERR_ARG;
527	else
528	devc->probe[ch] = u;
529	}
530	break;
05ac4a98 DG	531	default:
	532	ret = SR_ERR_NA;
	533	}
	534
	535	return ret;
	536	}
	537
c9404469 DG	538	static int config_channel_set(const struct sr_dev_inst *sdi,
	539	struct sr_channel *ch,
	540	unsigned int changes)
	541	{
	542	struct dev_context *devc = sdi->priv;
	543	uint8_t v;
	544
	545	if (changes & SR_CHANNEL_SET_ENABLED) {
	546	if (ch->enabled) {
	547	v = devc->channel \| (1 << ch->index);
	548	if (v & (v - 1))
	549	return SR_ERR;
	550	devc->channel = v;
	551	devc->enabled_channel->data = ch;
	552	} else {
	553	devc->channel &= ~(1 << ch->index);
	554	}
	555	}
	556	return SR_OK;
	557	}
	558
	559	static int config_commit(const struct sr_dev_inst *sdi)
05ac4a98	560	{
c9404469	561	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
05ac4a98 DG	562	int ret;
05ac4a98 DG	563
c9404469 DG	564	if (sdi->status != SR_ST_ACTIVE)
	565	return SR_ERR_DEV_CLOSED;
	566
	567	switch (state) {
	568	case 0x03:
	569	case 0x14:
	570	case 0x21:
	571	/* we will travel the complete config path on our way to state 1 */
	572	break;
	573	case 0x00:
	574	state = 0x01;
	575	default:
	576	ret = hung_chang_dso_2100_move_to(sdi, 1);
	577	if (ret != SR_OK)
	578	return ret;
	579	case 0x01:
	580	hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	581	}
	582	ret = hung_chang_dso_2100_move_to(sdi, 1);
	583	if (ret != SR_OK)
	584	return ret;
	585	return hung_chang_dso_2100_move_to(sdi, state);
	586	}
	587
	588	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	589	const struct sr_channel_group *cg)
	590	{
	591	GVariantBuilder gvb;
	592	GVariant gvar, rational[2];
	593	GSList *l;
	594	int i;
05ac4a98	595
05ac4a98	596	switch (key) {
c9404469 DG	597	case SR_CONF_SCAN_OPTIONS:
	598	case SR_CONF_DEVICE_OPTIONS:
	599	break;
	600	case SR_CONF_SAMPLERATE:
	601	case SR_CONF_TRIGGER_SOURCE:
	602	case SR_CONF_TRIGGER_SLOPE:
	603	case SR_CONF_BUFFERSIZE:
	604	if (!sdi \|\| cg)
	605	return SR_ERR_NA;
	606	break;
	607	case SR_CONF_VDIV:
	608	case SR_CONF_COUPLING:
	609	if (!sdi)
	610	return SR_ERR_NA;
	611	if (!cg)
	612	return SR_ERR_CHANNEL_GROUP;
	613	l = g_slist_find(sdi->channel_groups, cg);
	614	if (!l)
	615	return SR_ERR_ARG;
	616	break;
05ac4a98 DG	617	default:
	618	return SR_ERR_NA;
	619	}
	620
c9404469 DG	621	switch (key) {
	622	case SR_CONF_SCAN_OPTIONS:
	623	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	624	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	625	break;
	626	case SR_CONF_DEVICE_OPTIONS:
	627	if (!sdi)
	628	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	629	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	630	else if (!cg)
	631	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	632	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	633	else
	634	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	635	cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
	636	break;
	637	case SR_CONF_SAMPLERATE:
	638	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	639	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	640	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	641	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	642	*data = g_variant_builder_end(&gvb);
	643	break;
	644	case SR_CONF_TRIGGER_SOURCE:
	645	*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
	646	break;
	647	case SR_CONF_TRIGGER_SLOPE:
	648	*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
	649	break;
	650	case SR_CONF_BUFFERSIZE:
	651	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
	652	buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
	653	break;
	654	case SR_CONF_VDIV:
	655	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	656	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
	657	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	658	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	659	gvar = g_variant_new_tuple(rational, 2);
	660	g_variant_builder_add_value(&gvb, gvar);
	661	}
	662	*data = g_variant_builder_end(&gvb);
	663	break;
	664	case SR_CONF_COUPLING:
	665	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
	666	break;
	667	}
	668
	669	return SR_OK;
05ac4a98 DG	670	}
05ac4a98 DG	671
695dc859	672	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
05ac4a98	673	{
c9404469 DG	674	struct dev_context *devc = sdi->priv;
c9404469 DG	675	int ret;
05ac4a98 DG	676
	677	if (sdi->status != SR_ST_ACTIVE)
	678	return SR_ERR_DEV_CLOSED;
	679
c9404469 DG	680	if (devc->channel) {
	681	static const float res_array[] = {0.5, 1, 2, 5};
	682	static const uint8_t relays[] = {100, 10, 10, 1};
	683	devc->factor = devc->probe[devc->channel - 1] / 32.0;
	684	devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
	685	devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	686	}
	687	devc->frame = 0;
c9404469 DG	688	devc->state_known = TRUE;
	689	devc->step = 0;
	690	devc->adc2 = FALSE;
	691	devc->retries = MAX_RETRIES;
	692
	693	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	694	if (ret != SR_OK)
	695	return ret;
	696
695dc859	697	std_session_send_df_header(sdi, LOG_PREFIX);
c9404469	698
b165a242	699	sr_session_source_add(sdi->session, -1, 0, 8,
c9404469	700	hung_chang_dso_2100_poll, (void *)sdi);
05ac4a98 DG	701
	702	return SR_OK;
	703	}
	704
695dc859	705	SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
05ac4a98	706	{
05ac4a98 DG	707	if (sdi->status != SR_ST_ACTIVE)
	708	return SR_ERR_DEV_CLOSED;
	709
695dc859	710	std_session_send_df_end(sdi, LOG_PREFIX);
b165a242	711	sr_session_source_remove(sdi->session, -1);
c9404469	712	hung_chang_dso_2100_move_to(sdi, 1);
05ac4a98 DG	713
	714	return SR_OK;
	715	}
	716
695dc859	717	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c9404469	718	{
695dc859	719	return hung_chang_dso_2100_dev_acquisition_stop(sdi);
c9404469 DG	720	}
c9404469 DG	721
05ac4a98 DG	722	SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
	723	.name = "hung-chang-dso-2100",
	724	.longname = "Hung-Chang DSO-2100",
	725	.api_version = 1,
	726	.init = init,
700d6b64	727	.cleanup = std_cleanup,
05ac4a98	728	.scan = scan,
c01bf34c	729	.dev_list = std_dev_list,
05ac4a98 DG	730	.dev_clear = dev_clear,
	731	.config_get = config_get,
	732	.config_set = config_set,
c9404469 DG	733	.config_channel_set = config_channel_set,
c9404469 DG	734	.config_commit = config_commit,
05ac4a98 DG	735	.config_list = config_list,
	736	.dev_open = dev_open,
	737	.dev_close = dev_close,
	738	.dev_acquisition_start = dev_acquisition_start,
	739	.dev_acquisition_stop = dev_acquisition_stop,
	740	.context = NULL,
	741	};