[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 GSList *dev_list(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->context))->instances;
}

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 = 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
	233	static GSList dev_list(const struct sr_dev_driver di)
	234	{
	235	return ((struct drv_context *)(di->context))->instances;
	236	}
	237
c9404469 DG	238	static void clear_private(void *priv)
	239	{
	240	struct dev_context *devc = priv;
	241
	242	g_slist_free(devc->enabled_channel);
	243	}
	244
05ac4a98 DG	245	static int dev_clear(const struct sr_dev_driver *di)
05ac4a98 DG	246	{
c9404469 DG	247	struct drv_context *drvc = di->context;
	248	struct sr_dev_inst *sdi;
	249	GSList *l;
	250
	251	if (drvc) {
	252	for (l = drvc->instances; l; l = l->next) {
	253	sdi = l->data;
	254	ieee1284_unref(sdi->conn);
	255	}
	256	}
	257
	258	return std_dev_clear(di, clear_private);
05ac4a98 DG	259	}
	260
	261	static int dev_open(struct sr_dev_inst *sdi)
	262	{
c9404469 DG	263	struct dev_context *devc = sdi->priv;
	264	int i;
	265
	266	if (sdi->status != SR_ST_INACTIVE)
	267	goto fail1;
	268
	269	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
	270	goto fail1;
05ac4a98	271
c9404469 DG	272	if (ieee1284_claim(sdi->conn) != E1284_OK)
	273	goto fail2;
	274
	275	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
	276	goto fail3;
	277
	278	if (hung_chang_dso_2100_move_to(sdi, 1))
	279	goto fail3;
	280
	281	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	282	if (!devc->samples)
	283	goto fail3;
05ac4a98 DG	284
	285	sdi->status = SR_ST_ACTIVE;
	286
	287	return SR_OK;
c9404469 DG	288
	289	fail3:
	290	hung_chang_dso_2100_reset_port(sdi->conn);
	291	ieee1284_release(sdi->conn);
	292	fail2:
	293	ieee1284_close(sdi->conn);
	294	fail1:
	295	return SR_ERR;
05ac4a98 DG	296	}
	297
	298	static int dev_close(struct sr_dev_inst *sdi)
	299	{
c9404469	300	struct dev_context *devc = sdi->priv;
05ac4a98	301
c9404469 DG	302	if (sdi->status != SR_ST_ACTIVE)
c9404469 DG	303	return SR_OK;
05ac4a98	304
c9404469 DG	305	g_free(devc->samples);
	306	hung_chang_dso_2100_reset_port(sdi->conn);
	307	ieee1284_release(sdi->conn);
	308	ieee1284_close(sdi->conn);
05ac4a98 DG	309	sdi->status = SR_ST_INACTIVE;
	310
	311	return SR_OK;
	312	}
	313
c9404469 DG	314	static int find_in_array(GVariant data, const GVariantType type,
	315	const void *arr, int n)
	316	{
	317	const char * const *sarr;
	318	const char *s;
	319	const uint64_t *u64arr;
	320	const uint8_t *u8arr;
	321	uint64_t u64;
	322	uint8_t u8;
	323	int i;
	324
	325	if (!g_variant_is_of_type(data, type))
	326	return -1;
	327
	328	switch (g_variant_classify(data)) {
	329	case G_VARIANT_CLASS_STRING:
	330	s = g_variant_get_string(data, NULL);
	331	sarr = arr;
	332
	333	for (i = 0; i < n; i++)
	334	if (!strcmp(s, sarr[i]))
	335	return i;
	336	break;
	337	case G_VARIANT_CLASS_UINT64:
	338	u64 = g_variant_get_uint64(data);
	339	u64arr = arr;
	340
	341	for (i = 0; i < n; i++)
	342	if (u64 == u64arr[i])
	343	return i;
	344	break;
	345	case G_VARIANT_CLASS_BYTE:
	346	u8 = g_variant_get_byte(data);
	347	u8arr = arr;
	348
	349	for (i = 0; i < n; i++)
	350	if (u8 == u8arr[i])
	351	return i;
	352	default:
	353	break;
	354	}
	355
	356	return -1;
	357	}
	358
	359	static int reverse_map(uint8_t u, const uint8_t *arr, int n)
	360	{
	361	GVariant *v = g_variant_new_byte(u);
	362	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	363	g_variant_unref(v);
	364	return i;
05ac4a98 DG	365	}
	366
	367	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	368	const struct sr_channel_group *cg)
	369	{
c9404469 DG	370	struct dev_context *devc = sdi->priv;
	371	struct parport *port;
	372	int ret, i, ch = -1;
05ac4a98	373
c9404469 DG	374	if (cg) /* sr_config_get will validate cg using config_list */
c9404469 DG	375	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	376
	377	ret = SR_OK;
	378	switch (key) {
c9404469 DG	379	case SR_CONF_CONN:
	380	port = sdi->conn;
	381	*data = g_variant_new_string(port->name);
	382	break;
	383	case SR_CONF_LIMIT_FRAMES:
	384	*data = g_variant_new_uint64(devc->frame_limit);
	385	break;
	386	case SR_CONF_SAMPLERATE:
	387	*data = g_variant_new_uint64(samplerates[devc->rate]);
	388	break;
	389	case SR_CONF_TRIGGER_SOURCE:
	390	i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
	391	ARRAY_SIZE(trigger_sources_map));
	392	if (i == -1)
	393	ret = SR_ERR;
	394	else
	395	*data = g_variant_new_string(trigger_sources[i]);
	396	break;
	397	case SR_CONF_TRIGGER_SLOPE:
	398	if (devc->edge >= ARRAY_SIZE(trigger_slopes))
	399	ret = SR_ERR;
	400	else
	401	*data = g_variant_new_string(trigger_slopes[devc->edge]);
	402	break;
	403	case SR_CONF_BUFFERSIZE:
	404	*data = g_variant_new_uint64(buffersizes[devc->last_step]);
	405	break;
	406	case SR_CONF_VDIV:
	407	if (ch == -1) {
	408	ret = SR_ERR_CHANNEL_GROUP;
	409	} else {
	410	i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
	411	ARRAY_SIZE(vdivs_map));
	412	if (i == -1)
	413	ret = SR_ERR;
	414	else
	415	*data = g_variant_new("(tt)", vdivs[i][0],
	416	vdivs[i][1]);
	417	}
	418	break;
	419	case SR_CONF_COUPLING:
	420	if (ch == -1) {
	421	ret = SR_ERR_CHANNEL_GROUP;
	422	} else {
	423	i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
	424	ARRAY_SIZE(coupling_map));
	425	if (i == -1)
	426	ret = SR_ERR;
	427	else
	428	*data = g_variant_new_string(coupling[i]);
	429	}
	430	break;
	431	case SR_CONF_PROBE_FACTOR:
	432	if (ch == -1)
	433	ret = SR_ERR_CHANNEL_GROUP;
	434	else
	435	*data = g_variant_new_uint64(devc->probe[ch]);
	436	break;
05ac4a98	437	default:
c9404469	438	ret = SR_ERR_NA;
05ac4a98 DG	439	}
	440
	441	return ret;
	442	}
	443
	444	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	445	const struct sr_channel_group *cg)
	446	{
c9404469 DG	447	struct dev_context *devc = sdi->priv;
	448	int ret, i, ch = -1;
	449	uint64_t u, v;
05ac4a98	450
c9404469 DG	451	if (cg) /* sr_config_set will validate cg using config_list */
c9404469 DG	452	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	453
	454	if (sdi->status != SR_ST_ACTIVE)
	455	return SR_ERR_DEV_CLOSED;
	456
	457	ret = SR_OK;
	458	switch (key) {
c9404469 DG	459	case SR_CONF_LIMIT_FRAMES:
	460	devc->frame_limit = g_variant_get_uint64(data);
	461	break;
	462	case SR_CONF_SAMPLERATE:
	463	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	464	samplerates, ARRAY_SIZE(samplerates));
	465	if (i == -1)
	466	ret = SR_ERR_ARG;
	467	else
	468	devc->rate = i;
	469	break;
	470	case SR_CONF_TRIGGER_SOURCE:
	471	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	472	trigger_sources, ARRAY_SIZE(trigger_sources));
	473	if (i == -1)
	474	ret = SR_ERR_ARG;
	475	else
	476	devc->cctl[0] = (devc->cctl[0] & 0x3F)
	477	\| trigger_sources_map[i];
	478	break;
	479	case SR_CONF_TRIGGER_SLOPE:
	480	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	481	trigger_slopes, ARRAY_SIZE(trigger_slopes));
	482	if (i == -1)
	483	ret = SR_ERR_ARG;
	484	else
	485	devc->edge = i;
	486	break;
	487	case SR_CONF_BUFFERSIZE:
	488	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	489	buffersizes, ARRAY_SIZE(buffersizes));
	490	if (i == -1)
	491	ret = SR_ERR_ARG;
	492	else
	493	devc->last_step = i;
	494	break;
	495	case SR_CONF_VDIV:
	496	if (ch == -1) {
	497	ret = SR_ERR_CHANNEL_GROUP;
	498	} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
	499	ret = SR_ERR_ARG;
	500	} else {
	501	g_variant_get(data, "(tt)", &u, &v);
	502	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
	503	if (vdivs[i][0] == u && vdivs[i][1] == v)
	504	break;
	505	if (i == ARRAY_SIZE(vdivs))
	506	ret = SR_ERR_ARG;
	507	else
	508	devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
	509	\| vdivs_map[i];
	510	}
	511	break;
	512	case SR_CONF_COUPLING:
	513	if (ch == -1) {
	514	ret = SR_ERR_CHANNEL_GROUP;
	515	} else {
	516	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	517	coupling, ARRAY_SIZE(coupling));
	518	if (i == -1)
	519	ret = SR_ERR_ARG;
	520	else
	521	devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
	522	\| coupling_map[i];
523	}
524	break;
525	case SR_CONF_PROBE_FACTOR:
526	if (ch == -1) {
527	ret = SR_ERR_CHANNEL_GROUP;
528	} else {
529	u = g_variant_get_uint64(data);
530	if (!u)
531	ret = SR_ERR_ARG;
532	else
533	devc->probe[ch] = u;
534	}
535	break;
05ac4a98 DG	536	default:
	537	ret = SR_ERR_NA;
	538	}
	539
	540	return ret;
	541	}
	542
c9404469 DG	543	static int config_channel_set(const struct sr_dev_inst *sdi,
	544	struct sr_channel *ch,
	545	unsigned int changes)
	546	{
	547	struct dev_context *devc = sdi->priv;
	548	uint8_t v;
	549
	550	if (changes & SR_CHANNEL_SET_ENABLED) {
	551	if (ch->enabled) {
	552	v = devc->channel \| (1 << ch->index);
	553	if (v & (v - 1))
	554	return SR_ERR;
	555	devc->channel = v;
	556	devc->enabled_channel->data = ch;
	557	} else {
	558	devc->channel &= ~(1 << ch->index);
	559	}
	560	}
	561	return SR_OK;
	562	}
	563
	564	static int config_commit(const struct sr_dev_inst *sdi)
05ac4a98	565	{
c9404469	566	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
05ac4a98 DG	567	int ret;
05ac4a98 DG	568
c9404469 DG	569	if (sdi->status != SR_ST_ACTIVE)
	570	return SR_ERR_DEV_CLOSED;
	571
	572	switch (state) {
	573	case 0x03:
	574	case 0x14:
	575	case 0x21:
	576	/* we will travel the complete config path on our way to state 1 */
	577	break;
	578	case 0x00:
	579	state = 0x01;
	580	default:
	581	ret = hung_chang_dso_2100_move_to(sdi, 1);
	582	if (ret != SR_OK)
	583	return ret;
	584	case 0x01:
	585	hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	586	}
	587	ret = hung_chang_dso_2100_move_to(sdi, 1);
	588	if (ret != SR_OK)
	589	return ret;
	590	return hung_chang_dso_2100_move_to(sdi, state);
	591	}
	592
	593	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	594	const struct sr_channel_group *cg)
	595	{
	596	GVariantBuilder gvb;
	597	GVariant gvar, rational[2];
	598	GSList *l;
	599	int i;
05ac4a98	600
05ac4a98	601	switch (key) {
c9404469 DG	602	case SR_CONF_SCAN_OPTIONS:
	603	case SR_CONF_DEVICE_OPTIONS:
	604	break;
	605	case SR_CONF_SAMPLERATE:
	606	case SR_CONF_TRIGGER_SOURCE:
	607	case SR_CONF_TRIGGER_SLOPE:
	608	case SR_CONF_BUFFERSIZE:
	609	if (!sdi \|\| cg)
	610	return SR_ERR_NA;
	611	break;
	612	case SR_CONF_VDIV:
	613	case SR_CONF_COUPLING:
	614	if (!sdi)
	615	return SR_ERR_NA;
	616	if (!cg)
	617	return SR_ERR_CHANNEL_GROUP;
	618	l = g_slist_find(sdi->channel_groups, cg);
	619	if (!l)
	620	return SR_ERR_ARG;
	621	break;
05ac4a98 DG	622	default:
	623	return SR_ERR_NA;
	624	}
	625
c9404469 DG	626	switch (key) {
	627	case SR_CONF_SCAN_OPTIONS:
	628	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	629	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	630	break;
	631	case SR_CONF_DEVICE_OPTIONS:
	632	if (!sdi)
	633	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	634	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	635	else if (!cg)
	636	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	637	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	638	else
	639	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	640	cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
	641	break;
	642	case SR_CONF_SAMPLERATE:
	643	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	644	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	645	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	646	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	647	*data = g_variant_builder_end(&gvb);
	648	break;
	649	case SR_CONF_TRIGGER_SOURCE:
	650	*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
	651	break;
	652	case SR_CONF_TRIGGER_SLOPE:
	653	*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
	654	break;
	655	case SR_CONF_BUFFERSIZE:
	656	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
	657	buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
	658	break;
	659	case SR_CONF_VDIV:
	660	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	661	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
	662	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	663	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	664	gvar = g_variant_new_tuple(rational, 2);
	665	g_variant_builder_add_value(&gvb, gvar);
	666	}
	667	*data = g_variant_builder_end(&gvb);
	668	break;
	669	case SR_CONF_COUPLING:
	670	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
	671	break;
	672	}
	673
	674	return SR_OK;
05ac4a98 DG	675	}
05ac4a98 DG	676
695dc859	677	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
05ac4a98	678	{
c9404469 DG	679	struct dev_context *devc = sdi->priv;
c9404469 DG	680	int ret;
05ac4a98 DG	681
	682	if (sdi->status != SR_ST_ACTIVE)
	683	return SR_ERR_DEV_CLOSED;
	684
c9404469 DG	685	if (devc->channel) {
	686	static const float res_array[] = {0.5, 1, 2, 5};
	687	static const uint8_t relays[] = {100, 10, 10, 1};
	688	devc->factor = devc->probe[devc->channel - 1] / 32.0;
	689	devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
	690	devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	691	}
	692	devc->frame = 0;
c9404469 DG	693	devc->state_known = TRUE;
	694	devc->step = 0;
	695	devc->adc2 = FALSE;
	696	devc->retries = MAX_RETRIES;
	697
	698	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	699	if (ret != SR_OK)
	700	return ret;
	701
695dc859	702	std_session_send_df_header(sdi, LOG_PREFIX);
c9404469	703
b165a242	704	sr_session_source_add(sdi->session, -1, 0, 8,
c9404469	705	hung_chang_dso_2100_poll, (void *)sdi);
05ac4a98 DG	706
	707	return SR_OK;
	708	}
	709
695dc859	710	SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi)
05ac4a98	711	{
05ac4a98 DG	712	if (sdi->status != SR_ST_ACTIVE)
	713	return SR_ERR_DEV_CLOSED;
	714
695dc859	715	std_session_send_df_end(sdi, LOG_PREFIX);
b165a242	716	sr_session_source_remove(sdi->session, -1);
c9404469	717	hung_chang_dso_2100_move_to(sdi, 1);
05ac4a98 DG	718
	719	return SR_OK;
	720	}
	721
695dc859	722	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
c9404469	723	{
695dc859	724	return hung_chang_dso_2100_dev_acquisition_stop(sdi);
c9404469 DG	725	}
c9404469 DG	726
05ac4a98 DG	727	SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
	728	.name = "hung-chang-dso-2100",
	729	.longname = "Hung-Chang DSO-2100",
	730	.api_version = 1,
	731	.init = init,
700d6b64	732	.cleanup = std_cleanup,
05ac4a98 DG	733	.scan = scan,
	734	.dev_list = dev_list,
	735	.dev_clear = dev_clear,
	736	.config_get = config_get,
	737	.config_set = config_set,
c9404469 DG	738	.config_channel_set = config_channel_set,
c9404469 DG	739	.config_commit = config_commit,
05ac4a98 DG	740	.config_list = config_list,
	741	.dev_open = dev_open,
	742	.dev_close = dev_close,
	743	.dev_acquisition_start = dev_acquisition_start,
	744	.dev_acquisition_stop = dev_acquisition_stop,
	745	.context = NULL,
	746	};