[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"

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);
}

static 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,
};
SR_REGISTER_DEV_DRIVER(hung_chang_dso_2100_driver_info);
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"
05ac4a98 DG	24
c9404469 DG	25	static const uint32_t scanopts[] = {
	26	SR_CONF_CONN,
	27	};
	28
	29	static const uint32_t drvopts[] = {
	30	SR_CONF_OSCILLOSCOPE,
	31	};
	32
	33	static const uint32_t devopts[] = {
	34	SR_CONF_CONN \| SR_CONF_GET,
	35	SR_CONF_LIMIT_FRAMES \| SR_CONF_GET \| SR_CONF_SET,
	36	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	37	SR_CONF_TRIGGER_SOURCE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	38	SR_CONF_TRIGGER_SLOPE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	39	SR_CONF_BUFFERSIZE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	40	};
	41
	42	static const uint32_t cgopts[] = {
	43	SR_CONF_VDIV \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	44	SR_CONF_COUPLING \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	45	SR_CONF_PROBE_FACTOR \| SR_CONF_GET \| SR_CONF_SET,
	46	};
	47
	48	static const uint64_t samplerates[] = {
	49	SR_MHZ(100), SR_MHZ(50), SR_MHZ(25), SR_MHZ(20),
	50	SR_MHZ(10), SR_MHZ(5), SR_KHZ(2500), SR_MHZ(2),
	51	SR_MHZ(1), SR_KHZ(500), SR_KHZ(250), SR_KHZ(200),
	52	SR_KHZ(100), SR_KHZ(50), SR_KHZ(25), SR_KHZ(20),
	53	SR_KHZ(10), SR_KHZ(5), SR_HZ(2500), SR_KHZ(2),
	54	SR_KHZ(1), SR_HZ(500), SR_HZ(250), SR_HZ(200),
	55	SR_HZ(100), SR_HZ(50), SR_HZ(25), SR_HZ(20)
	56	};
	57
	58	/* must be in sync with readout_steps[] in protocol.c */
	59	static const uint64_t buffersizes[] = {
	60	2 * 500, 3 * 500, 4 * 500, 5 * 500,
	61	6 * 500, 7 * 500, 8 * 500, 9 * 500, 10 * 500,
	62	12 * 500 - 2, 14 * 500 - 2, 16 * 500 - 2,
	63	18 * 500 - 2, 20 * 500 - 2, 10240 - 2
	64	};
	65
	66	static const uint64_t vdivs[][2] = {
	67	{ 10, 1000 },
	68	{ 20, 1000 },
	69	{ 50, 1000 },
	70	{ 100, 1000 },
	71	{ 200, 1000 },
	72	{ 500, 1000 },
	73	{ 1, 1 },
	74	{ 2, 1 },
	75	{ 5, 1 },
	76	};
	77
	78	/* Bits 4 and 5 enable relays that add /10 filters to the chain
	79	* Bits 0 and 1 select an output from a resistor array */
	80	static const uint8_t vdivs_map[] = {
	81	0x01, 0x02, 0x03, 0x21, 0x22, 0x23, 0x31, 0x32, 0x33
	82	};
	83
	84
	85	static const char *trigger_sources[] = {
	86	"A", "B", "EXT"
	87	};
	88
89	static const uint8_t trigger_sources_map[] = {
90	0x00, 0x80, 0x40
91	};
92
93	static const char *trigger_slopes[] = {
94	"f", "r"
95	};
96
97	static const char *coupling[] = {
98	"DC", "AC", "GND"
99	};
100
101	static const uint8_t coupling_map[] = {
102	0x00, 0x08, 0x04
103	};
104
c9404469 DG	105	static GSList scan_port(GSList devices, struct sr_dev_driver *di,
c9404469 DG	106	struct parport *port)
05ac4a98	107	{
c9404469 DG	108	struct sr_dev_inst *sdi;
	109	struct sr_channel *ch;
	110	struct sr_channel_group *cg;
	111	struct dev_context *devc;
05ac4a98	112	struct drv_context *drvc;
c9404469	113	int i;
05ac4a98	114
c9404469 DG	115	if (ieee1284_open(port, 0, &i) != E1284_OK) {
	116	sr_err("Can't open parallel port %s", port->name);
	117	goto fail1;
	118	}
05ac4a98	119
c9404469 DG	120	if ((i & (CAP1284_RAW \| CAP1284_BYTE)) != (CAP1284_RAW \| CAP1284_BYTE)) {
	121	sr_err("Parallel port %s does not provide low-level bidirection access",
	122	port->name);
	123	goto fail2;
	124	}
	125
	126	if (ieee1284_claim(port) != E1284_OK) {
	127	sr_err("Parallel port %s already in use", port->name);
	128	goto fail2;
	129	}
	130
	131	if (!hung_chang_dso_2100_check_id(port))
	132	goto fail3;
	133
	134	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	135	sdi->status = SR_ST_INACTIVE;
	136	sdi->vendor = g_strdup("Hung-Chang");
	137	sdi->model = g_strdup("DSO-2100");
	138	sdi->driver = di;
05ac4a98	139	drvc = di->context;
c9404469 DG	140	sdi->inst_type = 0; /* FIXME */
	141	sdi->conn = port;
	142	ieee1284_ref(port);
	143
	144	for (i = 0; i < NUM_CHANNELS; i++) {
	145	cg = g_malloc0(sizeof(struct sr_channel_group));
	146	cg->name = g_strdup(trigger_sources[i]);
	147	ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, FALSE, trigger_sources[i]);
	148	cg->channels = g_slist_append(cg->channels, ch);
	149	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	150	}
	151
	152	devc = g_malloc0(sizeof(struct dev_context));
	153	devc->enabled_channel = g_slist_append(NULL, NULL);
	154	devc->channel = 0;
	155	devc->rate = 0;
	156	devc->probe[0] = 10;
	157	devc->probe[1] = 10;
	158	devc->cctl[0] = 0x31; /* 1V/div, DC coupling, trigger on channel A*/
	159	devc->cctl[1] = 0x31; /* 1V/div, DC coupling, no tv sync trigger */
	160	devc->edge = 0;
	161	devc->tlevel = 0x80;
	162	devc->pos[0] = 0x80;
	163	devc->pos[1] = 0x80;
	164	devc->offset[0] = 0x80;
	165	devc->offset[1] = 0x80;
	166	devc->gain[0] = 0x80;
	167	devc->gain[1] = 0x80;
	168	devc->frame_limit = 0;
	169	devc->last_step = 0; /* buffersize = 1000 */
	170	sdi->priv = devc;
	171
	172	drvc->instances = g_slist_append(drvc->instances, sdi);
	173	devices = g_slist_append(devices, sdi);
	174
	175	fail3:
	176	ieee1284_release(port);
	177	fail2:
	178	ieee1284_close(port);
	179	fail1:
	180	return devices;
	181	}
	182
	183	static GSList scan(struct sr_dev_driver di, GSList *options)
	184	{
	185	struct parport_list ports;
	186	struct sr_config *src;
	187	const char *conn = NULL;
	188	GSList devices, option;
	189	gboolean port_found;
	190	int i;
	191
	192
	193	for (option = options; option; option = option->next) {
	194	src = option->data;
	195	if (src->key == SR_CONF_CONN) {
	196	conn = g_variant_get_string(src->data, NULL);
	197	break;
	198	}
	199	}
	200
	201	if (!conn)
	202	return NULL;
05ac4a98	203
c9404469 DG	204	if (ieee1284_find_ports(&ports, 0) != E1284_OK)
	205	return NULL;
	206
	207	devices = NULL;
	208	port_found = FALSE;
	209	for (i = 0; i < ports.portc; i++)
	210	if (!strcmp(ports.portv[i]->name, conn)) {
	211	port_found = TRUE;
	212	devices = scan_port(devices, di, ports.portv[i]);
	213	}
	214
	215	if (!port_found) {
	216	sr_err("Parallel port %s not found. Valid names are:", conn);
	217	for (i = 0; i < ports.portc; i++)
	218	sr_err("\t%s", ports.portv[i]->name);
	219	}
	220
	221	ieee1284_free_ports(&ports);
05ac4a98 DG	222
	223	return devices;
	224	}
	225
c9404469 DG	226	static void clear_private(void *priv)
	227	{
	228	struct dev_context *devc = priv;
	229
	230	g_slist_free(devc->enabled_channel);
	231	}
	232
05ac4a98 DG	233	static int dev_clear(const struct sr_dev_driver *di)
05ac4a98 DG	234	{
c9404469 DG	235	struct drv_context *drvc = di->context;
	236	struct sr_dev_inst *sdi;
	237	GSList *l;
	238
	239	if (drvc) {
	240	for (l = drvc->instances; l; l = l->next) {
	241	sdi = l->data;
	242	ieee1284_unref(sdi->conn);
	243	}
	244	}
	245
	246	return std_dev_clear(di, clear_private);
05ac4a98 DG	247	}
	248
	249	static int dev_open(struct sr_dev_inst *sdi)
	250	{
c9404469 DG	251	struct dev_context *devc = sdi->priv;
	252	int i;
	253
	254	if (sdi->status != SR_ST_INACTIVE)
	255	goto fail1;
	256
	257	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
	258	goto fail1;
05ac4a98	259
c9404469 DG	260	if (ieee1284_claim(sdi->conn) != E1284_OK)
	261	goto fail2;
	262
	263	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
	264	goto fail3;
	265
	266	if (hung_chang_dso_2100_move_to(sdi, 1))
	267	goto fail3;
	268
	269	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	270	if (!devc->samples)
	271	goto fail3;
05ac4a98 DG	272
	273	sdi->status = SR_ST_ACTIVE;
	274
	275	return SR_OK;
c9404469 DG	276
	277	fail3:
	278	hung_chang_dso_2100_reset_port(sdi->conn);
	279	ieee1284_release(sdi->conn);
	280	fail2:
	281	ieee1284_close(sdi->conn);
	282	fail1:
	283	return SR_ERR;
05ac4a98 DG	284	}
	285
	286	static int dev_close(struct sr_dev_inst *sdi)
	287	{
c9404469	288	struct dev_context *devc = sdi->priv;
05ac4a98	289
c9404469 DG	290	if (sdi->status != SR_ST_ACTIVE)
c9404469 DG	291	return SR_OK;
05ac4a98	292
c9404469 DG	293	g_free(devc->samples);
	294	hung_chang_dso_2100_reset_port(sdi->conn);
	295	ieee1284_release(sdi->conn);
	296	ieee1284_close(sdi->conn);
05ac4a98 DG	297	sdi->status = SR_ST_INACTIVE;
	298
	299	return SR_OK;
	300	}
	301
c9404469 DG	302	static int find_in_array(GVariant data, const GVariantType type,
	303	const void *arr, int n)
	304	{
	305	const char * const *sarr;
	306	const char *s;
	307	const uint64_t *u64arr;
	308	const uint8_t *u8arr;
	309	uint64_t u64;
	310	uint8_t u8;
	311	int i;
	312
	313	if (!g_variant_is_of_type(data, type))
	314	return -1;
	315
	316	switch (g_variant_classify(data)) {
	317	case G_VARIANT_CLASS_STRING:
	318	s = g_variant_get_string(data, NULL);
	319	sarr = arr;
	320
	321	for (i = 0; i < n; i++)
	322	if (!strcmp(s, sarr[i]))
	323	return i;
	324	break;
	325	case G_VARIANT_CLASS_UINT64:
	326	u64 = g_variant_get_uint64(data);
	327	u64arr = arr;
	328
	329	for (i = 0; i < n; i++)
	330	if (u64 == u64arr[i])
	331	return i;
	332	break;
	333	case G_VARIANT_CLASS_BYTE:
	334	u8 = g_variant_get_byte(data);
	335	u8arr = arr;
	336
	337	for (i = 0; i < n; i++)
	338	if (u8 == u8arr[i])
	339	return i;
	340	default:
	341	break;
	342	}
	343
	344	return -1;
	345	}
	346
	347	static int reverse_map(uint8_t u, const uint8_t *arr, int n)
	348	{
	349	GVariant *v = g_variant_new_byte(u);
	350	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	351	g_variant_unref(v);
	352	return i;
05ac4a98 DG	353	}
	354
	355	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	356	const struct sr_channel_group *cg)
	357	{
c9404469 DG	358	struct dev_context *devc = sdi->priv;
	359	struct parport *port;
	360	int ret, i, ch = -1;
05ac4a98	361
c9404469 DG	362	if (cg) /* sr_config_get will validate cg using config_list */
c9404469 DG	363	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	364
	365	ret = SR_OK;
	366	switch (key) {
c9404469 DG	367	case SR_CONF_CONN:
	368	port = sdi->conn;
	369	*data = g_variant_new_string(port->name);
	370	break;
	371	case SR_CONF_LIMIT_FRAMES:
	372	*data = g_variant_new_uint64(devc->frame_limit);
	373	break;
	374	case SR_CONF_SAMPLERATE:
	375	*data = g_variant_new_uint64(samplerates[devc->rate]);
	376	break;
	377	case SR_CONF_TRIGGER_SOURCE:
	378	i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
	379	ARRAY_SIZE(trigger_sources_map));
	380	if (i == -1)
	381	ret = SR_ERR;
	382	else
	383	*data = g_variant_new_string(trigger_sources[i]);
	384	break;
	385	case SR_CONF_TRIGGER_SLOPE:
	386	if (devc->edge >= ARRAY_SIZE(trigger_slopes))
	387	ret = SR_ERR;
	388	else
	389	*data = g_variant_new_string(trigger_slopes[devc->edge]);
	390	break;
	391	case SR_CONF_BUFFERSIZE:
	392	*data = g_variant_new_uint64(buffersizes[devc->last_step]);
	393	break;
	394	case SR_CONF_VDIV:
	395	if (ch == -1) {
	396	ret = SR_ERR_CHANNEL_GROUP;
	397	} else {
	398	i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
	399	ARRAY_SIZE(vdivs_map));
	400	if (i == -1)
	401	ret = SR_ERR;
	402	else
	403	*data = g_variant_new("(tt)", vdivs[i][0],
	404	vdivs[i][1]);
	405	}
	406	break;
	407	case SR_CONF_COUPLING:
	408	if (ch == -1) {
	409	ret = SR_ERR_CHANNEL_GROUP;
	410	} else {
	411	i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
	412	ARRAY_SIZE(coupling_map));
	413	if (i == -1)
	414	ret = SR_ERR;
	415	else
	416	*data = g_variant_new_string(coupling[i]);
	417	}
	418	break;
	419	case SR_CONF_PROBE_FACTOR:
	420	if (ch == -1)
	421	ret = SR_ERR_CHANNEL_GROUP;
	422	else
	423	*data = g_variant_new_uint64(devc->probe[ch]);
	424	break;
05ac4a98	425	default:
c9404469	426	ret = SR_ERR_NA;
05ac4a98 DG	427	}
	428
	429	return ret;
	430	}
	431
	432	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	433	const struct sr_channel_group *cg)
	434	{
c9404469 DG	435	struct dev_context *devc = sdi->priv;
	436	int ret, i, ch = -1;
	437	uint64_t u, v;
05ac4a98	438
c9404469 DG	439	if (cg) /* sr_config_set will validate cg using config_list */
c9404469 DG	440	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	441
	442	if (sdi->status != SR_ST_ACTIVE)
	443	return SR_ERR_DEV_CLOSED;
	444
	445	ret = SR_OK;
	446	switch (key) {
c9404469 DG	447	case SR_CONF_LIMIT_FRAMES:
	448	devc->frame_limit = g_variant_get_uint64(data);
	449	break;
	450	case SR_CONF_SAMPLERATE:
	451	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	452	samplerates, ARRAY_SIZE(samplerates));
	453	if (i == -1)
	454	ret = SR_ERR_ARG;
	455	else
	456	devc->rate = i;
	457	break;
	458	case SR_CONF_TRIGGER_SOURCE:
	459	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	460	trigger_sources, ARRAY_SIZE(trigger_sources));
	461	if (i == -1)
	462	ret = SR_ERR_ARG;
	463	else
	464	devc->cctl[0] = (devc->cctl[0] & 0x3F)
	465	\| trigger_sources_map[i];
	466	break;
	467	case SR_CONF_TRIGGER_SLOPE:
	468	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	469	trigger_slopes, ARRAY_SIZE(trigger_slopes));
	470	if (i == -1)
	471	ret = SR_ERR_ARG;
	472	else
	473	devc->edge = i;
	474	break;
	475	case SR_CONF_BUFFERSIZE:
	476	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	477	buffersizes, ARRAY_SIZE(buffersizes));
	478	if (i == -1)
	479	ret = SR_ERR_ARG;
	480	else
	481	devc->last_step = i;
	482	break;
	483	case SR_CONF_VDIV:
	484	if (ch == -1) {
	485	ret = SR_ERR_CHANNEL_GROUP;
	486	} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
	487	ret = SR_ERR_ARG;
	488	} else {
	489	g_variant_get(data, "(tt)", &u, &v);
	490	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
	491	if (vdivs[i][0] == u && vdivs[i][1] == v)
	492	break;
	493	if (i == ARRAY_SIZE(vdivs))
	494	ret = SR_ERR_ARG;
	495	else
	496	devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
	497	\| vdivs_map[i];
	498	}
	499	break;
	500	case SR_CONF_COUPLING:
	501	if (ch == -1) {
	502	ret = SR_ERR_CHANNEL_GROUP;
	503	} else {
	504	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	505	coupling, ARRAY_SIZE(coupling));
	506	if (i == -1)
	507	ret = SR_ERR_ARG;
	508	else
	509	devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
	510	\| coupling_map[i];
511	}
512	break;
513	case SR_CONF_PROBE_FACTOR:
514	if (ch == -1) {
515	ret = SR_ERR_CHANNEL_GROUP;
516	} else {
517	u = g_variant_get_uint64(data);
518	if (!u)
519	ret = SR_ERR_ARG;
520	else
521	devc->probe[ch] = u;
522	}
523	break;
05ac4a98 DG	524	default:
	525	ret = SR_ERR_NA;
	526	}
	527
	528	return ret;
	529	}
	530
c9404469 DG	531	static int config_channel_set(const struct sr_dev_inst *sdi,
	532	struct sr_channel *ch,
	533	unsigned int changes)
	534	{
	535	struct dev_context *devc = sdi->priv;
	536	uint8_t v;
	537
	538	if (changes & SR_CHANNEL_SET_ENABLED) {
	539	if (ch->enabled) {
	540	v = devc->channel \| (1 << ch->index);
	541	if (v & (v - 1))
	542	return SR_ERR;
	543	devc->channel = v;
	544	devc->enabled_channel->data = ch;
	545	} else {
	546	devc->channel &= ~(1 << ch->index);
	547	}
	548	}
	549	return SR_OK;
	550	}
	551
	552	static int config_commit(const struct sr_dev_inst *sdi)
05ac4a98	553	{
c9404469	554	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
05ac4a98 DG	555	int ret;
05ac4a98 DG	556
c9404469 DG	557	if (sdi->status != SR_ST_ACTIVE)
	558	return SR_ERR_DEV_CLOSED;
	559
	560	switch (state) {
	561	case 0x03:
	562	case 0x14:
	563	case 0x21:
	564	/* we will travel the complete config path on our way to state 1 */
	565	break;
	566	case 0x00:
	567	state = 0x01;
	568	default:
	569	ret = hung_chang_dso_2100_move_to(sdi, 1);
	570	if (ret != SR_OK)
	571	return ret;
	572	case 0x01:
	573	hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	574	}
	575	ret = hung_chang_dso_2100_move_to(sdi, 1);
	576	if (ret != SR_OK)
	577	return ret;
	578	return hung_chang_dso_2100_move_to(sdi, state);
	579	}
	580
	581	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	582	const struct sr_channel_group *cg)
	583	{
	584	GVariantBuilder gvb;
	585	GVariant gvar, rational[2];
	586	GSList *l;
	587	int i;
05ac4a98	588
05ac4a98	589	switch (key) {
c9404469 DG	590	case SR_CONF_SCAN_OPTIONS:
	591	case SR_CONF_DEVICE_OPTIONS:
	592	break;
	593	case SR_CONF_SAMPLERATE:
	594	case SR_CONF_TRIGGER_SOURCE:
	595	case SR_CONF_TRIGGER_SLOPE:
	596	case SR_CONF_BUFFERSIZE:
	597	if (!sdi \|\| cg)
	598	return SR_ERR_NA;
	599	break;
	600	case SR_CONF_VDIV:
	601	case SR_CONF_COUPLING:
	602	if (!sdi)
	603	return SR_ERR_NA;
	604	if (!cg)
	605	return SR_ERR_CHANNEL_GROUP;
	606	l = g_slist_find(sdi->channel_groups, cg);
	607	if (!l)
	608	return SR_ERR_ARG;
	609	break;
05ac4a98 DG	610	default:
	611	return SR_ERR_NA;
	612	}
	613
c9404469 DG	614	switch (key) {
	615	case SR_CONF_SCAN_OPTIONS:
	616	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	617	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	618	break;
	619	case SR_CONF_DEVICE_OPTIONS:
	620	if (!sdi)
	621	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	622	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	623	else if (!cg)
	624	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	625	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	626	else
	627	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	628	cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
	629	break;
	630	case SR_CONF_SAMPLERATE:
	631	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	632	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	633	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	634	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	635	*data = g_variant_builder_end(&gvb);
	636	break;
	637	case SR_CONF_TRIGGER_SOURCE:
	638	*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
	639	break;
	640	case SR_CONF_TRIGGER_SLOPE:
	641	*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
	642	break;
	643	case SR_CONF_BUFFERSIZE:
	644	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
	645	buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
	646	break;
	647	case SR_CONF_VDIV:
	648	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	649	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
	650	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	651	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	652	gvar = g_variant_new_tuple(rational, 2);
	653	g_variant_builder_add_value(&gvb, gvar);
	654	}
	655	*data = g_variant_builder_end(&gvb);
	656	break;
	657	case SR_CONF_COUPLING:
	658	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
	659	break;
	660	}
	661
	662	return SR_OK;
05ac4a98 DG	663	}
05ac4a98 DG	664
695dc859	665	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
05ac4a98	666	{
c9404469 DG	667	struct dev_context *devc = sdi->priv;
c9404469 DG	668	int ret;
05ac4a98 DG	669
	670	if (sdi->status != SR_ST_ACTIVE)
	671	return SR_ERR_DEV_CLOSED;
	672
c9404469 DG	673	if (devc->channel) {
	674	static const float res_array[] = {0.5, 1, 2, 5};
	675	static const uint8_t relays[] = {100, 10, 10, 1};
	676	devc->factor = devc->probe[devc->channel - 1] / 32.0;
	677	devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
	678	devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	679	}
	680	devc->frame = 0;
c9404469 DG	681	devc->state_known = TRUE;
	682	devc->step = 0;
	683	devc->adc2 = FALSE;
	684	devc->retries = MAX_RETRIES;
	685
	686	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	687	if (ret != SR_OK)
	688	return ret;
	689
695dc859	690	std_session_send_df_header(sdi, LOG_PREFIX);
c9404469	691
b165a242	692	sr_session_source_add(sdi->session, -1, 0, 8,
c9404469	693	hung_chang_dso_2100_poll, (void *)sdi);
05ac4a98 DG	694
	695	return SR_OK;
	696	}
	697
695dc859	698	SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
05ac4a98	699	{
05ac4a98 DG	700	if (sdi->status != SR_ST_ACTIVE)
	701	return SR_ERR_DEV_CLOSED;
	702
695dc859	703	std_session_send_df_end(sdi, LOG_PREFIX);
b165a242	704	sr_session_source_remove(sdi->session, -1);
c9404469	705	hung_chang_dso_2100_move_to(sdi, 1);
05ac4a98 DG	706
	707	return SR_OK;
	708	}
	709
695dc859	710	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c9404469	711	{
695dc859	712	return hung_chang_dso_2100_dev_acquisition_stop(sdi);
c9404469 DG	713	}
c9404469 DG	714
dd5c48a6	715	static struct sr_dev_driver hung_chang_dso_2100_driver_info = {
05ac4a98 DG	716	.name = "hung-chang-dso-2100",
	717	.longname = "Hung-Chang DSO-2100",
	718	.api_version = 1,
c2fdcc25	719	.init = std_init,
700d6b64	720	.cleanup = std_cleanup,
05ac4a98	721	.scan = scan,
c01bf34c	722	.dev_list = std_dev_list,
05ac4a98 DG	723	.dev_clear = dev_clear,
	724	.config_get = config_get,
	725	.config_set = config_set,
c9404469 DG	726	.config_channel_set = config_channel_set,
c9404469 DG	727	.config_commit = config_commit,
05ac4a98 DG	728	.config_list = config_list,
	729	.dev_open = dev_open,
	730	.dev_close = dev_close,
	731	.dev_acquisition_start = dev_acquisition_start,
	732	.dev_acquisition_stop = dev_acquisition_stop,
	733	.context = NULL,
	734	};
dd5c48a6	735	SR_REGISTER_DEV_DRIVER(hung_chang_dso_2100_driver_info);