[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 cleanup(const struct sr_dev_driver *di)
{
	struct drv_context *drvc = di->context;
	int ret;

	ret = dev_clear(di);

	g_free(drvc);

	return ret;
}

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,
		void *cb_data)
{
	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->cb_data = cb_data;
	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(cb_data, 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,
		void *cb_data)
{
	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	std_session_send_df_end(cb_data, 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, void *cb_data)
{
	return hung_chang_dso_2100_dev_acquisition_stop(sdi, cb_data);
}

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 = 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
	314	static int cleanup(const struct sr_dev_driver *di)
	315	{
c9404469 DG	316	struct drv_context *drvc = di->context;
c9404469 DG	317	int ret;
05ac4a98	318
c9404469	319	ret = dev_clear(di);
05ac4a98	320
c9404469 DG	321	g_free(drvc);
	322
	323	return ret;
	324	}
	325
	326	static int find_in_array(GVariant data, const GVariantType type,
	327	const void *arr, int n)
	328	{
	329	const char * const *sarr;
	330	const char *s;
	331	const uint64_t *u64arr;
	332	const uint8_t *u8arr;
	333	uint64_t u64;
	334	uint8_t u8;
	335	int i;
	336
	337	if (!g_variant_is_of_type(data, type))
	338	return -1;
	339
	340	switch (g_variant_classify(data)) {
	341	case G_VARIANT_CLASS_STRING:
	342	s = g_variant_get_string(data, NULL);
	343	sarr = arr;
	344
	345	for (i = 0; i < n; i++)
	346	if (!strcmp(s, sarr[i]))
	347	return i;
	348	break;
	349	case G_VARIANT_CLASS_UINT64:
	350	u64 = g_variant_get_uint64(data);
	351	u64arr = arr;
	352
	353	for (i = 0; i < n; i++)
	354	if (u64 == u64arr[i])
	355	return i;
	356	break;
	357	case G_VARIANT_CLASS_BYTE:
	358	u8 = g_variant_get_byte(data);
	359	u8arr = arr;
	360
	361	for (i = 0; i < n; i++)
	362	if (u8 == u8arr[i])
	363	return i;
	364	default:
	365	break;
	366	}
	367
	368	return -1;
	369	}
	370
	371	static int reverse_map(uint8_t u, const uint8_t *arr, int n)
	372	{
	373	GVariant *v = g_variant_new_byte(u);
	374	int i = find_in_array(v, G_VARIANT_TYPE_BYTE, arr, n);
	375	g_variant_unref(v);
	376	return i;
05ac4a98 DG	377	}
	378
	379	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	380	const struct sr_channel_group *cg)
	381	{
c9404469 DG	382	struct dev_context *devc = sdi->priv;
	383	struct parport *port;
	384	int ret, i, ch = -1;
05ac4a98	385
c9404469 DG	386	if (cg) /* sr_config_get will validate cg using config_list */
c9404469 DG	387	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	388
	389	ret = SR_OK;
	390	switch (key) {
c9404469 DG	391	case SR_CONF_CONN:
	392	port = sdi->conn;
	393	*data = g_variant_new_string(port->name);
	394	break;
	395	case SR_CONF_LIMIT_FRAMES:
	396	*data = g_variant_new_uint64(devc->frame_limit);
	397	break;
	398	case SR_CONF_SAMPLERATE:
	399	*data = g_variant_new_uint64(samplerates[devc->rate]);
	400	break;
	401	case SR_CONF_TRIGGER_SOURCE:
	402	i = reverse_map(devc->cctl[0] & 0xC0, trigger_sources_map,
	403	ARRAY_SIZE(trigger_sources_map));
	404	if (i == -1)
	405	ret = SR_ERR;
	406	else
	407	*data = g_variant_new_string(trigger_sources[i]);
	408	break;
	409	case SR_CONF_TRIGGER_SLOPE:
	410	if (devc->edge >= ARRAY_SIZE(trigger_slopes))
	411	ret = SR_ERR;
	412	else
	413	*data = g_variant_new_string(trigger_slopes[devc->edge]);
	414	break;
	415	case SR_CONF_BUFFERSIZE:
	416	*data = g_variant_new_uint64(buffersizes[devc->last_step]);
	417	break;
	418	case SR_CONF_VDIV:
	419	if (ch == -1) {
	420	ret = SR_ERR_CHANNEL_GROUP;
	421	} else {
	422	i = reverse_map(devc->cctl[ch] & 0x33, vdivs_map,
	423	ARRAY_SIZE(vdivs_map));
	424	if (i == -1)
	425	ret = SR_ERR;
	426	else
	427	*data = g_variant_new("(tt)", vdivs[i][0],
	428	vdivs[i][1]);
	429	}
	430	break;
	431	case SR_CONF_COUPLING:
	432	if (ch == -1) {
	433	ret = SR_ERR_CHANNEL_GROUP;
	434	} else {
	435	i = reverse_map(devc->cctl[ch] & 0x0C, coupling_map,
	436	ARRAY_SIZE(coupling_map));
	437	if (i == -1)
	438	ret = SR_ERR;
	439	else
	440	*data = g_variant_new_string(coupling[i]);
	441	}
	442	break;
	443	case SR_CONF_PROBE_FACTOR:
	444	if (ch == -1)
	445	ret = SR_ERR_CHANNEL_GROUP;
	446	else
	447	*data = g_variant_new_uint64(devc->probe[ch]);
	448	break;
05ac4a98	449	default:
c9404469	450	ret = SR_ERR_NA;
05ac4a98 DG	451	}
	452
	453	return ret;
	454	}
	455
	456	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	457	const struct sr_channel_group *cg)
	458	{
c9404469 DG	459	struct dev_context *devc = sdi->priv;
	460	int ret, i, ch = -1;
	461	uint64_t u, v;
05ac4a98	462
c9404469 DG	463	if (cg) /* sr_config_set will validate cg using config_list */
c9404469 DG	464	ch = ((struct sr_channel *)cg->channels->data)->index;
05ac4a98 DG	465
	466	if (sdi->status != SR_ST_ACTIVE)
	467	return SR_ERR_DEV_CLOSED;
	468
	469	ret = SR_OK;
	470	switch (key) {
c9404469 DG	471	case SR_CONF_LIMIT_FRAMES:
	472	devc->frame_limit = g_variant_get_uint64(data);
	473	break;
	474	case SR_CONF_SAMPLERATE:
	475	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	476	samplerates, ARRAY_SIZE(samplerates));
	477	if (i == -1)
	478	ret = SR_ERR_ARG;
	479	else
	480	devc->rate = i;
	481	break;
	482	case SR_CONF_TRIGGER_SOURCE:
	483	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	484	trigger_sources, ARRAY_SIZE(trigger_sources));
	485	if (i == -1)
	486	ret = SR_ERR_ARG;
	487	else
	488	devc->cctl[0] = (devc->cctl[0] & 0x3F)
	489	\| trigger_sources_map[i];
	490	break;
	491	case SR_CONF_TRIGGER_SLOPE:
	492	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	493	trigger_slopes, ARRAY_SIZE(trigger_slopes));
	494	if (i == -1)
	495	ret = SR_ERR_ARG;
	496	else
	497	devc->edge = i;
	498	break;
	499	case SR_CONF_BUFFERSIZE:
	500	i = find_in_array(data, G_VARIANT_TYPE_UINT64,
	501	buffersizes, ARRAY_SIZE(buffersizes));
	502	if (i == -1)
	503	ret = SR_ERR_ARG;
	504	else
	505	devc->last_step = i;
	506	break;
	507	case SR_CONF_VDIV:
	508	if (ch == -1) {
	509	ret = SR_ERR_CHANNEL_GROUP;
	510	} else if (!g_variant_is_of_type(data, G_VARIANT_TYPE("(tt)"))) {
	511	ret = SR_ERR_ARG;
	512	} else {
	513	g_variant_get(data, "(tt)", &u, &v);
	514	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++)
	515	if (vdivs[i][0] == u && vdivs[i][1] == v)
	516	break;
	517	if (i == ARRAY_SIZE(vdivs))
	518	ret = SR_ERR_ARG;
	519	else
	520	devc->cctl[ch] = (devc->cctl[ch] & 0xCC)
	521	\| vdivs_map[i];
	522	}
	523	break;
	524	case SR_CONF_COUPLING:
	525	if (ch == -1) {
	526	ret = SR_ERR_CHANNEL_GROUP;
	527	} else {
	528	i = find_in_array(data, G_VARIANT_TYPE_STRING,
	529	coupling, ARRAY_SIZE(coupling));
	530	if (i == -1)
	531	ret = SR_ERR_ARG;
	532	else
	533	devc->cctl[ch] = (devc->cctl[ch] & 0xF3)
	534	\| coupling_map[i];
535	}
536	break;
537	case SR_CONF_PROBE_FACTOR:
538	if (ch == -1) {
539	ret = SR_ERR_CHANNEL_GROUP;
540	} else {
541	u = g_variant_get_uint64(data);
542	if (!u)
543	ret = SR_ERR_ARG;
544	else
545	devc->probe[ch] = u;
546	}
547	break;
05ac4a98 DG	548	default:
	549	ret = SR_ERR_NA;
	550	}
	551
	552	return ret;
	553	}
	554
c9404469 DG	555	static int config_channel_set(const struct sr_dev_inst *sdi,
	556	struct sr_channel *ch,
	557	unsigned int changes)
	558	{
	559	struct dev_context *devc = sdi->priv;
	560	uint8_t v;
	561
	562	if (changes & SR_CHANNEL_SET_ENABLED) {
	563	if (ch->enabled) {
	564	v = devc->channel \| (1 << ch->index);
	565	if (v & (v - 1))
	566	return SR_ERR;
	567	devc->channel = v;
	568	devc->enabled_channel->data = ch;
	569	} else {
	570	devc->channel &= ~(1 << ch->index);
	571	}
	572	}
	573	return SR_OK;
	574	}
	575
	576	static int config_commit(const struct sr_dev_inst *sdi)
05ac4a98	577	{
c9404469	578	uint8_t state = hung_chang_dso_2100_read_mbox(sdi->conn, 0.02);
05ac4a98 DG	579	int ret;
05ac4a98 DG	580
c9404469 DG	581	if (sdi->status != SR_ST_ACTIVE)
	582	return SR_ERR_DEV_CLOSED;
	583
	584	switch (state) {
	585	case 0x03:
	586	case 0x14:
	587	case 0x21:
	588	/* we will travel the complete config path on our way to state 1 */
	589	break;
	590	case 0x00:
	591	state = 0x01;
	592	default:
	593	ret = hung_chang_dso_2100_move_to(sdi, 1);
	594	if (ret != SR_OK)
	595	return ret;
	596	case 0x01:
	597	hung_chang_dso_2100_write_mbox(sdi->conn, 4);
	598	}
	599	ret = hung_chang_dso_2100_move_to(sdi, 1);
	600	if (ret != SR_OK)
	601	return ret;
	602	return hung_chang_dso_2100_move_to(sdi, state);
	603	}
	604
	605	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	606	const struct sr_channel_group *cg)
	607	{
	608	GVariantBuilder gvb;
	609	GVariant gvar, rational[2];
	610	GSList *l;
	611	int i;
05ac4a98	612
05ac4a98	613	switch (key) {
c9404469 DG	614	case SR_CONF_SCAN_OPTIONS:
	615	case SR_CONF_DEVICE_OPTIONS:
	616	break;
	617	case SR_CONF_SAMPLERATE:
	618	case SR_CONF_TRIGGER_SOURCE:
	619	case SR_CONF_TRIGGER_SLOPE:
	620	case SR_CONF_BUFFERSIZE:
	621	if (!sdi \|\| cg)
	622	return SR_ERR_NA;
	623	break;
	624	case SR_CONF_VDIV:
	625	case SR_CONF_COUPLING:
	626	if (!sdi)
	627	return SR_ERR_NA;
	628	if (!cg)
	629	return SR_ERR_CHANNEL_GROUP;
	630	l = g_slist_find(sdi->channel_groups, cg);
	631	if (!l)
	632	return SR_ERR_ARG;
	633	break;
05ac4a98 DG	634	default:
	635	return SR_ERR_NA;
	636	}
	637
c9404469 DG	638	switch (key) {
	639	case SR_CONF_SCAN_OPTIONS:
	640	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	641	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	642	break;
	643	case SR_CONF_DEVICE_OPTIONS:
	644	if (!sdi)
	645	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	646	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	647	else if (!cg)
	648	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	649	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	650	else
	651	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	652	cgopts, ARRAY_SIZE(cgopts), sizeof(uint32_t));
	653	break;
	654	case SR_CONF_SAMPLERATE:
	655	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	656	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	657	samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
	658	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	659	*data = g_variant_builder_end(&gvb);
	660	break;
	661	case SR_CONF_TRIGGER_SOURCE:
	662	*data = g_variant_new_strv(trigger_sources, ARRAY_SIZE(trigger_sources));
	663	break;
	664	case SR_CONF_TRIGGER_SLOPE:
	665	*data = g_variant_new_strv(trigger_slopes, ARRAY_SIZE(trigger_slopes));
	666	break;
	667	case SR_CONF_BUFFERSIZE:
	668	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
	669	buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t));
	670	break;
	671	case SR_CONF_VDIV:
	672	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	673	for (i = 0; i < (int)ARRAY_SIZE(vdivs); i++) {
	674	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	675	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	676	gvar = g_variant_new_tuple(rational, 2);
	677	g_variant_builder_add_value(&gvb, gvar);
	678	}
	679	*data = g_variant_builder_end(&gvb);
	680	break;
	681	case SR_CONF_COUPLING:
	682	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
	683	break;
	684	}
	685
	686	return SR_OK;
05ac4a98 DG	687	}
	688
	689	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	690	void *cb_data)
	691	{
c9404469 DG	692	struct dev_context *devc = sdi->priv;
c9404469 DG	693	int ret;
05ac4a98 DG	694
	695	if (sdi->status != SR_ST_ACTIVE)
	696	return SR_ERR_DEV_CLOSED;
	697
c9404469 DG	698	if (devc->channel) {
	699	static const float res_array[] = {0.5, 1, 2, 5};
	700	static const uint8_t relays[] = {100, 10, 10, 1};
	701	devc->factor = devc->probe[devc->channel - 1] / 32.0;
	702	devc->factor *= res_array[devc->cctl[devc->channel - 1] & 0x03];
	703	devc->factor /= relays[(devc->cctl[devc->channel - 1] >> 4) & 0x03];
	704	}
	705	devc->frame = 0;
	706	devc->cb_data = cb_data;
	707	devc->state_known = TRUE;
	708	devc->step = 0;
	709	devc->adc2 = FALSE;
	710	devc->retries = MAX_RETRIES;
	711
	712	ret = hung_chang_dso_2100_move_to(sdi, 0x21);
	713	if (ret != SR_OK)
	714	return ret;
	715
	716	std_session_send_df_header(cb_data, LOG_PREFIX);
	717
b165a242	718	sr_session_source_add(sdi->session, -1, 0, 8,
c9404469	719	hung_chang_dso_2100_poll, (void *)sdi);
05ac4a98 DG	720
	721	return SR_OK;
	722	}
	723
c9404469 DG	724	SR_PRIV int hung_chang_dso_2100_dev_acquisition_stop(const struct sr_dev_inst *sdi,
c9404469 DG	725	void *cb_data)
05ac4a98	726	{
05ac4a98 DG	727	if (sdi->status != SR_ST_ACTIVE)
	728	return SR_ERR_DEV_CLOSED;
	729
3be42bc2	730	std_session_send_df_end(cb_data, LOG_PREFIX);
b165a242	731	sr_session_source_remove(sdi->session, -1);
c9404469	732	hung_chang_dso_2100_move_to(sdi, 1);
05ac4a98 DG	733
	734	return SR_OK;
	735	}
	736
c9404469 DG	737	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	738	{
	739	return hung_chang_dso_2100_dev_acquisition_stop(sdi, cb_data);
	740	}
	741
05ac4a98 DG	742	SR_PRIV struct sr_dev_driver hung_chang_dso_2100_driver_info = {
	743	.name = "hung-chang-dso-2100",
	744	.longname = "Hung-Chang DSO-2100",
	745	.api_version = 1,
	746	.init = init,
	747	.cleanup = cleanup,
	748	.scan = scan,
	749	.dev_list = dev_list,
	750	.dev_clear = dev_clear,
	751	.config_get = config_get,
	752	.config_set = config_set,
c9404469 DG	753	.config_channel_set = config_channel_set,
c9404469 DG	754	.config_commit = config_commit,
05ac4a98 DG	755	.config_list = config_list,
	756	.dev_open = dev_open,
	757	.dev_close = dev_close,
	758	.dev_acquisition_start = dev_acquisition_start,
	759	.dev_acquisition_stop = dev_acquisition_stop,
	760	.context = NULL,
	761	};