[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 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 = 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_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
c9404469 DG	107	static GSList scan_port(GSList devices, struct sr_dev_driver *di,
c9404469 DG	108	struct parport *port)
05ac4a98	109	{
c9404469 DG	110	struct sr_dev_inst *sdi;
	111	struct sr_channel *ch;
	112	struct sr_channel_group *cg;
	113	struct dev_context *devc;
05ac4a98	114	struct drv_context *drvc;
c9404469	115	int i;
05ac4a98	116
c9404469 DG	117	if (ieee1284_open(port, 0, &i) != E1284_OK) {
	118	sr_err("Can't open parallel port %s", port->name);
	119	goto fail1;
	120	}
05ac4a98	121
c9404469 DG	122	if ((i & (CAP1284_RAW \| CAP1284_BYTE)) != (CAP1284_RAW \| CAP1284_BYTE)) {
	123	sr_err("Parallel port %s does not provide low-level bidirection access",
	124	port->name);
	125	goto fail2;
	126	}
	127
	128	if (ieee1284_claim(port) != E1284_OK) {
	129	sr_err("Parallel port %s already in use", port->name);
	130	goto fail2;
	131	}
	132
	133	if (!hung_chang_dso_2100_check_id(port))
	134	goto fail3;
	135
	136	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	137	sdi->status = SR_ST_INACTIVE;
	138	sdi->vendor = g_strdup("Hung-Chang");
	139	sdi->model = g_strdup("DSO-2100");
	140	sdi->driver = di;
05ac4a98	141	drvc = di->context;
c9404469 DG	142	sdi->inst_type = 0; /* FIXME */
	143	sdi->conn = port;
	144	ieee1284_ref(port);
	145
	146	for (i = 0; i < NUM_CHANNELS; i++) {
	147	cg = g_malloc0(sizeof(struct sr_channel_group));
	148	cg->name = g_strdup(trigger_sources[i]);
	149	ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, FALSE, trigger_sources[i]);
	150	cg->channels = g_slist_append(cg->channels, ch);
	151	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	152	}
	153
	154	devc = g_malloc0(sizeof(struct dev_context));
	155	devc->enabled_channel = g_slist_append(NULL, NULL);
	156	devc->channel = 0;
	157	devc->rate = 0;
	158	devc->probe[0] = 10;
	159	devc->probe[1] = 10;
	160	devc->cctl[0] = 0x31; /* 1V/div, DC coupling, trigger on channel A*/
	161	devc->cctl[1] = 0x31; /* 1V/div, DC coupling, no tv sync trigger */
	162	devc->edge = 0;
	163	devc->tlevel = 0x80;
	164	devc->pos[0] = 0x80;
	165	devc->pos[1] = 0x80;
	166	devc->offset[0] = 0x80;
	167	devc->offset[1] = 0x80;
	168	devc->gain[0] = 0x80;
	169	devc->gain[1] = 0x80;
	170	devc->frame_limit = 0;
	171	devc->last_step = 0; /* buffersize = 1000 */
	172	sdi->priv = devc;
	173
	174	drvc->instances = g_slist_append(drvc->instances, sdi);
	175	devices = g_slist_append(devices, sdi);
	176
	177	fail3:
	178	ieee1284_release(port);
	179	fail2:
	180	ieee1284_close(port);
	181	fail1:
	182	return devices;
	183	}
	184
	185	static GSList scan(struct sr_dev_driver di, GSList *options)
	186	{
	187	struct parport_list ports;
	188	struct sr_config *src;
	189	const char *conn = NULL;
	190	GSList devices, option;
	191	gboolean port_found;
	192	int i;
	193
	194
	195	for (option = options; option; option = option->next) {
	196	src = option->data;
	197	if (src->key == SR_CONF_CONN) {
	198	conn = g_variant_get_string(src->data, NULL);
	199	break;
	200	}
	201	}
	202
	203	if (!conn)
	204	return NULL;
05ac4a98	205
c9404469 DG	206	if (ieee1284_find_ports(&ports, 0) != E1284_OK)
	207	return NULL;
	208
	209	devices = NULL;
	210	port_found = FALSE;
	211	for (i = 0; i < ports.portc; i++)
	212	if (!strcmp(ports.portv[i]->name, conn)) {
	213	port_found = TRUE;
	214	devices = scan_port(devices, di, ports.portv[i]);
	215	}
	216
	217	if (!port_found) {
	218	sr_err("Parallel port %s not found. Valid names are:", conn);
	219	for (i = 0; i < ports.portc; i++)
	220	sr_err("\t%s", ports.portv[i]->name);
	221	}
	222
	223	ieee1284_free_ports(&ports);
05ac4a98 DG	224
	225	return devices;
	226	}
	227
c9404469 DG	228	static void clear_private(void *priv)
	229	{
	230	struct dev_context *devc = priv;
	231
	232	g_slist_free(devc->enabled_channel);
	233	}
	234
05ac4a98 DG	235	static int dev_clear(const struct sr_dev_driver *di)
05ac4a98 DG	236	{
c9404469 DG	237	struct drv_context *drvc = di->context;
	238	struct sr_dev_inst *sdi;
	239	GSList *l;
	240
	241	if (drvc) {
	242	for (l = drvc->instances; l; l = l->next) {
	243	sdi = l->data;
	244	ieee1284_unref(sdi->conn);
	245	}
	246	}
	247
	248	return std_dev_clear(di, clear_private);
05ac4a98 DG	249	}
	250
	251	static int dev_open(struct sr_dev_inst *sdi)
	252	{
c9404469 DG	253	struct dev_context *devc = sdi->priv;
	254	int i;
	255
	256	if (sdi->status != SR_ST_INACTIVE)
	257	goto fail1;
	258
	259	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
	260	goto fail1;
05ac4a98	261
c9404469 DG	262	if (ieee1284_claim(sdi->conn) != E1284_OK)
	263	goto fail2;
	264
	265	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
	266	goto fail3;
	267
	268	if (hung_chang_dso_2100_move_to(sdi, 1))
	269	goto fail3;
	270
	271	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	272	if (!devc->samples)
	273	goto fail3;
05ac4a98 DG	274
	275	sdi->status = SR_ST_ACTIVE;
	276
	277	return SR_OK;
c9404469 DG	278
	279	fail3:
	280	hung_chang_dso_2100_reset_port(sdi->conn);
	281	ieee1284_release(sdi->conn);
	282	fail2:
	283	ieee1284_close(sdi->conn);
	284	fail1:
	285	return SR_ERR;
05ac4a98 DG	286	}
	287
	288	static int dev_close(struct sr_dev_inst *sdi)
	289	{
c9404469	290	struct dev_context *devc = sdi->priv;
05ac4a98	291
c9404469 DG	292	if (sdi->status != SR_ST_ACTIVE)
c9404469 DG	293	return SR_OK;
05ac4a98	294
c9404469 DG	295	g_free(devc->samples);
	296	hung_chang_dso_2100_reset_port(sdi->conn);
	297	ieee1284_release(sdi->conn);
	298	ieee1284_close(sdi->conn);
05ac4a98 DG	299	sdi->status = SR_ST_INACTIVE;
	300
	301	return SR_OK;
	302	}
	303
c9404469 DG	304	static int find_in_array(GVariant data, const GVariantType type,
	305	const void *arr, int n)
	306	{
	307	const char * const *sarr;
	308	const char *s;
	309	const uint64_t *u64arr;
	310	const uint8_t *u8arr;
	311	uint64_t u64;
	312	uint8_t u8;
	313	int i;
	314
	315	if (!g_variant_is_of_type(data, type))
	316	return -1;
	317
	318	switch (g_variant_classify(data)) {
	319	case G_VARIANT_CLASS_STRING:
	320	s = g_variant_get_string(data, NULL);
	321	sarr = arr;
	322
	323	for (i = 0; i < n; i++)
	324	if (!strcmp(s, sarr[i]))
	325	return i;
	326	break;
	327	case G_VARIANT_CLASS_UINT64:
	328	u64 = g_variant_get_uint64(data);
	329	u64arr = arr;
	330
	331	for (i = 0; i < n; i++)
	332	if (u64 == u64arr[i])
	333	return i;
	334	break;
	335	case G_VARIANT_CLASS_BYTE:
	336	u8 = g_variant_get_byte(data);
	337	u8arr = arr;
	338
	339	for (i = 0; i < n; i++)
	340	if (u8 == u8arr[i])
	341	return i;
	342	default:
	343	break;
	344	}
	345
	346	return -1;
	347	}
	348
	349	static int reverse_map(uint8_t u, const uint8_t *arr, int n)
	350	{
	351	GVariant *v = g_variant_new_byte(u);
	352	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	353	g_variant_unref(v);
	354	return i;
05ac4a98 DG	355	}
	356
	357	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	358	const struct sr_channel_group *cg)
	359	{
c9404469 DG	360	struct dev_context *devc = sdi->priv;
	361	struct parport *port;
	362	int ret, i, ch = -1;
05ac4a98	363
c9404469 DG	364	if (cg) /* sr_config_get will validate cg using config_list */
c9404469 DG	365	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	366
	367	ret = SR_OK;
	368	switch (key) {
c9404469 DG	369	case SR_CONF_CONN:
	370	port = sdi->conn;
	371	*data = g_variant_new_string(port->name);
	372	break;
	373	case SR_CONF_LIMIT_FRAMES:
	374	*data = g_variant_new_uint64(devc->frame_limit);
	375	break;
	376	case SR_CONF_SAMPLERATE:
	377	*data = g_variant_new_uint64(samplerates[devc->rate]);
	378	break;
	379	case SR_CONF_TRIGGER_SOURCE:
	380	i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
	381	ARRAY_SIZE(trigger_sources_map));
	382	if (i == -1)
	383	ret = SR_ERR;
	384	else
	385	*data = g_variant_new_string(trigger_sources[i]);
	386	break;
	387	case SR_CONF_TRIGGER_SLOPE:
	388	if (devc->edge >= ARRAY_SIZE(trigger_slopes))
	389	ret = SR_ERR;
	390	else
	391	*data = g_variant_new_string(trigger_slopes[devc->edge]);
	392	break;
	393	case SR_CONF_BUFFERSIZE:
	394	*data = g_variant_new_uint64(buffersizes[devc->last_step]);
	395	break;
	396	case SR_CONF_VDIV:
	397	if (ch == -1) {
	398	ret = SR_ERR_CHANNEL_GROUP;
	399	} else {
	400	i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
	401	ARRAY_SIZE(vdivs_map));
	402	if (i == -1)
	403	ret = SR_ERR;
	404	else
	405	*data = g_variant_new("(tt)", vdivs[i][0],
	406	vdivs[i][1]);
	407	}
	408	break;
	409	case SR_CONF_COUPLING:
	410	if (ch == -1) {
	411	ret = SR_ERR_CHANNEL_GROUP;
	412	} else {
	413	i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
	414	ARRAY_SIZE(coupling_map));
	415	if (i == -1)
	416	ret = SR_ERR;
	417	else
	418	*data = g_variant_new_string(coupling[i]);
	419	}
	420	break;
	421	case SR_CONF_PROBE_FACTOR:
	422	if (ch == -1)
	423	ret = SR_ERR_CHANNEL_GROUP;
	424	else
	425	*data = g_variant_new_uint64(devc->probe[ch]);
	426	break;
05ac4a98	427	default:
c9404469	428	ret = SR_ERR_NA;
05ac4a98 DG	429	}
	430
	431	return ret;
	432	}
	433
	434	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	435	const struct sr_channel_group *cg)
	436	{
c9404469 DG	437	struct dev_context *devc = sdi->priv;
	438	int ret, i, ch = -1;
	439	uint64_t u, v;
05ac4a98	440
c9404469 DG	441	if (cg) /* sr_config_set will validate cg using config_list */
c9404469 DG	442	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	443
	444	if (sdi->status != SR_ST_ACTIVE)
	445	return SR_ERR_DEV_CLOSED;
	446
	447	ret = SR_OK;
	448	switch (key) {
c9404469 DG	449	case SR_CONF_LIMIT_FRAMES:
	450	devc->frame_limit = g_variant_get_uint64(data);
	451	break;
	452	case SR_CONF_SAMPLERATE:
	453	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	454	samplerates, ARRAY_SIZE(samplerates));
	455	if (i == -1)
	456	ret = SR_ERR_ARG;
	457	else
	458	devc->rate = i;
	459	break;
	460	case SR_CONF_TRIGGER_SOURCE:
	461	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	462	trigger_sources, ARRAY_SIZE(trigger_sources));
	463	if (i == -1)
	464	ret = SR_ERR_ARG;
	465	else
	466	devc->cctl[0] = (devc->cctl[0] & 0x3F)
	467	\| trigger_sources_map[i];
	468	break;
	469	case SR_CONF_TRIGGER_SLOPE:
	470	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	471	trigger_slopes, ARRAY_SIZE(trigger_slopes));
	472	if (i == -1)
	473	ret = SR_ERR_ARG;
	474	else
	475	devc->edge = i;
	476	break;
	477	case SR_CONF_BUFFERSIZE:
	478	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	479	buffersizes, ARRAY_SIZE(buffersizes));
	480	if (i == -1)
	481	ret = SR_ERR_ARG;
	482	else
	483	devc->last_step = i;
	484	break;
	485	case SR_CONF_VDIV:
	486	if (ch == -1) {
	487	ret = SR_ERR_CHANNEL_GROUP;
	488	} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
	489	ret = SR_ERR_ARG;
	490	} else {
	491	g_variant_get(data, "(tt)", &u, &v);
	492	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
	493	if (vdivs[i][0] == u && vdivs[i][1] == v)
	494	break;
	495	if (i == ARRAY_SIZE(vdivs))
	496	ret = SR_ERR_ARG;
	497	else
	498	devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
	499	\| vdivs_map[i];
	500	}
	501	break;
	502	case SR_CONF_COUPLING:
	503	if (ch == -1) {
	504	ret = SR_ERR_CHANNEL_GROUP;
	505	} else {
	506	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	507	coupling, ARRAY_SIZE(coupling));
	508	if (i == -1)
	509	ret = SR_ERR_ARG;
	510	else
	511	devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
	512	\| coupling_map[i];
513	}
514	break;
515	case SR_CONF_PROBE_FACTOR:
516	if (ch == -1) {
517	ret = SR_ERR_CHANNEL_GROUP;
518	} else {
519	u = g_variant_get_uint64(data);
520	if (!u)
521	ret = SR_ERR_ARG;
522	else
523	devc->probe[ch] = u;
524	}
525	break;
05ac4a98 DG	526	default:
	527	ret = SR_ERR_NA;
	528	}
	529
	530	return ret;
	531	}
	532
c9404469 DG	533	static int config_channel_set(const struct sr_dev_inst *sdi,
	534	struct sr_channel *ch,
	535	unsigned int changes)
	536	{
	537	struct dev_context *devc = sdi->priv;
	538	uint8_t v;
	539
	540	if (changes & SR_CHANNEL_SET_ENABLED) {
	541	if (ch->enabled) {
	542	v = devc->channel \| (1 << ch->index);
	543	if (v & (v - 1))
	544	return SR_ERR;
	545	devc->channel = v;
	546	devc->enabled_channel->data = ch;
	547	} else {
	548	devc->channel &= ~(1 << ch->index);
	549	}
	550	}
	551	return SR_OK;
	552	}
	553
	554	static int config_commit(const struct sr_dev_inst *sdi)
05ac4a98	555	{
c9404469	556	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
05ac4a98 DG	557	int ret;
05ac4a98 DG	558
c9404469 DG	559	if (sdi->status != SR_ST_ACTIVE)
	560	return SR_ERR_DEV_CLOSED;
	561
	562	switch (state) {
	563	case 0x03:
	564	case 0x14:
	565	case 0x21:
	566	/* we will travel the complete config path on our way to state 1 */
	567	break;
	568	case 0x00:
	569	state = 0x01;
	570	default:
	571	ret = hung_chang_dso_2100_move_to(sdi, 1);
	572	if (ret != SR_OK)
	573	return ret;
	574	case 0x01:
	575	hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	576	}
	577	ret = hung_chang_dso_2100_move_to(sdi, 1);
	578	if (ret != SR_OK)
	579	return ret;
	580	return hung_chang_dso_2100_move_to(sdi, state);
	581	}
	582
	583	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	584	const struct sr_channel_group *cg)
	585	{
	586	GVariantBuilder gvb;
	587	GVariant gvar, rational[2];
	588	GSList *l;
	589	int i;
05ac4a98	590
05ac4a98	591	switch (key) {
c9404469 DG	592	case SR_CONF_SCAN_OPTIONS:
	593	case SR_CONF_DEVICE_OPTIONS:
	594	break;
	595	case SR_CONF_SAMPLERATE:
	596	case SR_CONF_TRIGGER_SOURCE:
	597	case SR_CONF_TRIGGER_SLOPE:
	598	case SR_CONF_BUFFERSIZE:
	599	if (!sdi \|\| cg)
	600	return SR_ERR_NA;
	601	break;
	602	case SR_CONF_VDIV:
	603	case SR_CONF_COUPLING:
	604	if (!sdi)
	605	return SR_ERR_NA;
	606	if (!cg)
	607	return SR_ERR_CHANNEL_GROUP;
	608	l = g_slist_find(sdi->channel_groups, cg);
	609	if (!l)
	610	return SR_ERR_ARG;
	611	break;
05ac4a98 DG	612	default:
	613	return SR_ERR_NA;
	614	}
	615
c9404469 DG	616	switch (key) {
	617	case SR_CONF_SCAN_OPTIONS:
	618	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	619	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	620	break;
	621	case SR_CONF_DEVICE_OPTIONS:
	622	if (!sdi)
	623	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	624	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	625	else if (!cg)
	626	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	627	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	628	else
	629	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	630	cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
	631	break;
	632	case SR_CONF_SAMPLERATE:
	633	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	634	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	635	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	636	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	637	*data = g_variant_builder_end(&gvb);
	638	break;
	639	case SR_CONF_TRIGGER_SOURCE:
	640	*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
	641	break;
	642	case SR_CONF_TRIGGER_SLOPE:
	643	*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
	644	break;
	645	case SR_CONF_BUFFERSIZE:
	646	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
	647	buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
	648	break;
	649	case SR_CONF_VDIV:
	650	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	651	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
	652	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	653	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	654	gvar = g_variant_new_tuple(rational, 2);
	655	g_variant_builder_add_value(&gvb, gvar);
	656	}
	657	*data = g_variant_builder_end(&gvb);
	658	break;
	659	case SR_CONF_COUPLING:
	660	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
	661	break;
	662	}
	663
	664	return SR_OK;
05ac4a98 DG	665	}
05ac4a98 DG	666
695dc859	667	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
05ac4a98	668	{
c9404469 DG	669	struct dev_context *devc = sdi->priv;
c9404469 DG	670	int ret;
05ac4a98 DG	671
	672	if (sdi->status != SR_ST_ACTIVE)
	673	return SR_ERR_DEV_CLOSED;
	674
c9404469 DG	675	if (devc->channel) {
	676	static const float res_array[] = {0.5, 1, 2, 5};
	677	static const uint8_t relays[] = {100, 10, 10, 1};
	678	devc->factor = devc->probe[devc->channel - 1] / 32.0;
	679	devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
	680	devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	681	}
	682	devc->frame = 0;
c9404469 DG	683	devc->state_known = TRUE;
	684	devc->step = 0;
	685	devc->adc2 = FALSE;
	686	devc->retries = MAX_RETRIES;
	687
	688	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	689	if (ret != SR_OK)
	690	return ret;
	691
695dc859	692	std_session_send_df_header(sdi, LOG_PREFIX);
c9404469	693
b165a242	694	sr_session_source_add(sdi->session, -1, 0, 8,
c9404469	695	hung_chang_dso_2100_poll, (void *)sdi);
05ac4a98 DG	696
	697	return SR_OK;
	698	}
	699
695dc859	700	SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
05ac4a98	701	{
05ac4a98 DG	702	if (sdi->status != SR_ST_ACTIVE)
	703	return SR_ERR_DEV_CLOSED;
	704
695dc859	705	std_session_send_df_end(sdi, LOG_PREFIX);
b165a242	706	sr_session_source_remove(sdi->session, -1);
c9404469	707	hung_chang_dso_2100_move_to(sdi, 1);
05ac4a98 DG	708
	709	return SR_OK;
	710	}
	711
695dc859	712	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c9404469	713	{
695dc859	714	return hung_chang_dso_2100_dev_acquisition_stop(sdi);
c9404469 DG	715	}
c9404469 DG	716
05ac4a98 DG	717	SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
	718	.name = "hung-chang-dso-2100",
	719	.longname = "Hung-Chang DSO-2100",
	720	.api_version = 1,
c2fdcc25	721	.init = std_init,
700d6b64	722	.cleanup = std_cleanup,
05ac4a98	723	.scan = scan,
c01bf34c	724	.dev_list = std_dev_list,
05ac4a98 DG	725	.dev_clear = dev_clear,
	726	.config_get = config_get,
	727	.config_set = config_set,
c9404469 DG	728	.config_channel_set = config_channel_set,
c9404469 DG	729	.config_commit = config_commit,
05ac4a98 DG	730	.config_list = config_list,
	731	.dev_open = dev_open,
	732	.dev_close = dev_close,
	733	.dev_acquisition_start = dev_acquisition_start,
	734	.dev_acquisition_stop = dev_acquisition_stop,
	735	.context = NULL,
	736	};