[libsigrok.git] / src / hardware / ikalogic-scanaplus / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <config.h>
#include "protocol.h"

#define USB_VENDOR_ID			0x0403
#define USB_DEVICE_ID			0x6014
#define USB_VENDOR_NAME			"IKALOGIC"
#define USB_MODEL_NAME			"ScanaPLUS"
#define USB_IPRODUCT			"SCANAPLUS"

#define SAMPLE_BUF_SIZE			(8 * 1024 * 1024)

static const uint32_t devopts[] = {
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

/* Channels are numbered 1-9. */
static const char *channel_names[] = {
	"1", "2", "3", "4", "5", "6", "7", "8", "9",
};

/* Note: The IKALOGIC ScanaPLUS always samples at 100MHz. */
static const uint64_t samplerates[1] = { SR_MHZ(100) };

static int dev_acquisition_stop(struct sr_dev_inst *sdi);

static void clear_helper(void *priv)
{
	struct dev_context *devc;

	devc = priv;

	ftdi_free(devc->ftdic);
	g_free(devc->compressed_buf);
	g_free(devc->sample_buf);
	g_free(devc);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear(di, clear_helper);
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	GSList *devices;
	unsigned int i;
	int ret;

	(void)options;

	drvc = di->context;

	devices = NULL;

	/* Allocate memory for our private device context. */
	devc = g_malloc0(sizeof(struct dev_context));

	/* Allocate memory for the incoming compressed samples. */
	if (!(devc->compressed_buf = g_try_malloc0(COMPRESSED_BUF_SIZE))) {
		sr_err("compressed_buf malloc failed.");
		goto err_free_devc;
	}

	/* Allocate memory for the uncompressed samples. */
	if (!(devc->sample_buf = g_try_malloc0(SAMPLE_BUF_SIZE))) {
		sr_err("sample_buf malloc failed.");
		goto err_free_compressed_buf;
	}

	/* Allocate memory for the FTDI context (ftdic) and initialize it. */
	if (!(devc->ftdic = ftdi_new())) {
		sr_err("Failed to initialize libftdi.");
		goto err_free_sample_buf;
	}

	/* Check for the device and temporarily open it. */
	ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID,
				 USB_IPRODUCT, NULL);
	if (ret < 0) {
		/* Log errors, except for -3 ("device not found"). */
		if (ret != -3)
			sr_err("Failed to open device (%d): %s", ret,
			       ftdi_get_error_string(devc->ftdic));
		goto err_free_ftdic;
	}

	/* Register the device with libsigrok. */
	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup(USB_VENDOR_NAME);
	sdi->model = g_strdup(USB_MODEL_NAME);
	sdi->driver = di;
	sdi->priv = devc;

	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
		sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]);

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

	/* Close device. We'll reopen it again when we need it. */
	scanaplus_close(devc);

	return devices;

	scanaplus_close(devc);
err_free_ftdic:
	ftdi_free(devc->ftdic); /* NOT free() or g_free()! */
err_free_sample_buf:
	g_free(devc->sample_buf);
err_free_compressed_buf:
	g_free(devc->compressed_buf);
err_free_devc:
	g_free(devc);

	return NULL;
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	int ret;

	devc = sdi->priv;

	/* Select interface A, otherwise communication will fail. */
	ret = ftdi_set_interface(devc->ftdic, INTERFACE_A);
	if (ret < 0) {
		sr_err("Failed to set FTDI interface A (%d): %s", ret,
		       ftdi_get_error_string(devc->ftdic));
		return SR_ERR;
	}
	sr_dbg("FTDI chip interface A set successfully.");

	/* Open the device. */
	ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID,
				 USB_IPRODUCT, NULL);
	if (ret < 0) {
		sr_err("Failed to open device (%d): %s", ret,
		       ftdi_get_error_string(devc->ftdic));
		return SR_ERR;
	}
	sr_dbg("FTDI device opened successfully.");

	/* Purge RX/TX buffers in the FTDI chip. */
	if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) {
		sr_err("Failed to purge FTDI RX/TX buffers (%d): %s.",
		       ret, ftdi_get_error_string(devc->ftdic));
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("FTDI chip buffers purged successfully.");

	/* Reset the FTDI bitmode. */
	ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_RESET);
	if (ret < 0) {
		sr_err("Failed to reset the FTDI chip bitmode (%d): %s.",
		       ret, ftdi_get_error_string(devc->ftdic));
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("FTDI chip bitmode reset successfully.");

	/* Set FTDI bitmode to "sync FIFO". */
	ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_SYNCFF);
	if (ret < 0) {
		sr_err("Failed to put FTDI chip into sync FIFO mode (%d): %s.",
		       ret, ftdi_get_error_string(devc->ftdic));
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("FTDI chip sync FIFO mode entered successfully.");

	/* Set the FTDI latency timer to 2. */
	ret = ftdi_set_latency_timer(devc->ftdic, 2);
	if (ret < 0) {
		sr_err("Failed to set FTDI latency timer (%d): %s.",
		       ret, ftdi_get_error_string(devc->ftdic));
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("FTDI chip latency timer set successfully.");

	/* Set the FTDI read data chunk size to 64kB. */
	ret = ftdi_read_data_set_chunksize(devc->ftdic, 64 * 1024);
	if (ret < 0) {
		sr_err("Failed to set FTDI read data chunk size (%d): %s.",
		       ret, ftdi_get_error_string(devc->ftdic));
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("FTDI chip read data chunk size set successfully.");

	/* Get the ScanaPLUS device ID from the FTDI EEPROM. */
	if ((ret = scanaplus_get_device_id(devc)) < 0) {
		sr_err("Failed to get ScanaPLUS device ID: %d.", ret);
		goto err_dev_open_close_ftdic;
	}
	sr_dbg("Received ScanaPLUS device ID successfully: %02x %02x %02x.",
	       devc->devid[0], devc->devid[1], devc->devid[2]);

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;

err_dev_open_close_ftdic:
	scanaplus_close(devc);
	return SR_ERR;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	int ret;
	struct dev_context *devc;

	ret = SR_OK;
	devc = sdi->priv;

	if (sdi->status == SR_ST_ACTIVE) {
		sr_dbg("Status ACTIVE, closing device.");
		ret = scanaplus_close(devc);
	} else {
		sr_spew("Status not ACTIVE, nothing to do.");
	}

	sdi->status = SR_ST_INACTIVE;

	return ret;
}

static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		/* The ScanaPLUS samplerate is 100MHz and can't be changed. */
		*data = g_variant_new_uint64(SR_MHZ(100));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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;

	(void)cg;

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

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		if (g_variant_get_uint64(data) != SR_MHZ(100)) {
			sr_err("ScanaPLUS only supports samplerate = 100MHz.");
			return SR_ERR_ARG;
		}
		/* Nothing to do, the ScanaPLUS samplerate is always 100MHz. */
		break;
	case SR_CONF_LIMIT_MSEC:
		if (g_variant_get_uint64(data) == 0)
			return SR_ERR_ARG;
		devc->limit_msec = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		if (g_variant_get_uint64(data) == 0)
			return SR_ERR_ARG;
		devc->limit_samples = g_variant_get_uint64(data);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	GVariant *gvar;
	GVariantBuilder gvb;

	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts, ARRAY_SIZE(devopts), 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;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	int ret;
	struct dev_context *devc;

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

	devc = sdi->priv;

	if (!devc->ftdic)
		return SR_ERR_BUG;

	/* TODO: Configure channels later (thresholds etc.). */

	/* Properly reset internal variables before every new acquisition. */
	devc->compressed_bytes_ignored = 0;
	devc->samples_sent = 0;
	devc->bytes_received = 0;

	if ((ret = scanaplus_init(devc)) < 0)
		return ret;

	if ((ret = scanaplus_start_acquisition(devc)) < 0)
		return ret;

	std_session_send_df_header(sdi, LOG_PREFIX);

	/* Hook up a dummy handler to receive data from the device. */
	sr_session_source_add(sdi->session, -1, 0, 0, scanaplus_receive_data, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	sr_dbg("Stopping acquisition.");
	sr_session_source_remove(sdi->session, -1);
	std_session_send_df_end(sdi, LOG_PREFIX);

	return SR_OK;
}

static struct sr_dev_driver ikalogic_scanaplus_driver_info = {
	.name = "ikalogic-scanaplus",
	.longname = "IKALOGIC ScanaPLUS",
	.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_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(ikalogic_scanaplus_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
	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 2 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, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <config.h>
	22	#include "protocol.h"
	23
	24	#define USB_VENDOR_ID 0x0403
	25	#define USB_DEVICE_ID 0x6014
	26	#define USB_VENDOR_NAME "IKALOGIC"
	27	#define USB_MODEL_NAME "ScanaPLUS"
	28	#define USB_IPRODUCT "SCANAPLUS"
	29
	30	#define SAMPLE_BUF_SIZE (8 * 1024 * 1024)
	31
	32	static const uint32_t devopts[] = {
	33	SR_CONF_LOGIC_ANALYZER,
	34	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
	35	SR_CONF_LIMIT_MSEC \| SR_CONF_SET,
	36	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	37	};
	38
	39	/* Channels are numbered 1-9. */
	40	static const char *channel_names[] = {
	41	"1", "2", "3", "4", "5", "6", "7", "8", "9",
	42	};
	43
	44	/* Note: The IKALOGIC ScanaPLUS always samples at 100MHz. */
	45	static const uint64_t samplerates[1] = { SR_MHZ(100) };
	46
	47	static int dev_acquisition_stop(struct sr_dev_inst *sdi);
	48
	49	static void clear_helper(void *priv)
	50	{
	51	struct dev_context *devc;
	52
	53	devc = priv;
	54
	55	ftdi_free(devc->ftdic);
	56	g_free(devc->compressed_buf);
	57	g_free(devc->sample_buf);
	58	g_free(devc);
	59	}
	60
	61	static int dev_clear(const struct sr_dev_driver *di)
	62	{
	63	return std_dev_clear(di, clear_helper);
	64	}
	65
	66	static GSList scan(struct sr_dev_driver di, GSList *options)
	67	{
	68	struct sr_dev_inst *sdi;
	69	struct drv_context *drvc;
	70	struct dev_context *devc;
	71	GSList *devices;
	72	unsigned int i;
	73	int ret;
	74
	75	(void)options;
	76
	77	drvc = di->context;
	78
	79	devices = NULL;
	80
	81	/* Allocate memory for our private device context. */
	82	devc = g_malloc0(sizeof(struct dev_context));
	83
	84	/* Allocate memory for the incoming compressed samples. */
	85	if (!(devc->compressed_buf = g_try_malloc0(COMPRESSED_BUF_SIZE))) {
	86	sr_err("compressed_buf malloc failed.");
	87	goto err_free_devc;
	88	}
	89
	90	/* Allocate memory for the uncompressed samples. */
	91	if (!(devc->sample_buf = g_try_malloc0(SAMPLE_BUF_SIZE))) {
	92	sr_err("sample_buf malloc failed.");
	93	goto err_free_compressed_buf;
	94	}
	95
	96	/* Allocate memory for the FTDI context (ftdic) and initialize it. */
	97	if (!(devc->ftdic = ftdi_new())) {
	98	sr_err("Failed to initialize libftdi.");
	99	goto err_free_sample_buf;
	100	}
	101
	102	/* Check for the device and temporarily open it. */
	103	ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID,
	104	USB_IPRODUCT, NULL);
	105	if (ret < 0) {
	106	/* Log errors, except for -3 ("device not found"). */
	107	if (ret != -3)
	108	sr_err("Failed to open device (%d): %s", ret,
	109	ftdi_get_error_string(devc->ftdic));
	110	goto err_free_ftdic;
	111	}
	112
	113	/* Register the device with libsigrok. */
	114	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	115	sdi->status = SR_ST_INACTIVE;
	116	sdi->vendor = g_strdup(USB_VENDOR_NAME);
	117	sdi->model = g_strdup(USB_MODEL_NAME);
	118	sdi->driver = di;
	119	sdi->priv = devc;
	120
	121	for (i = 0; i < ARRAY_SIZE(channel_names); i++)
	122	sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]);
	123
	124	devices = g_slist_append(devices, sdi);
	125	drvc->instances = g_slist_append(drvc->instances, sdi);
	126
	127	/* Close device. We'll reopen it again when we need it. */
	128	scanaplus_close(devc);
	129
	130	return devices;
	131
	132	scanaplus_close(devc);
	133	err_free_ftdic:
	134	ftdi_free(devc->ftdic); /* NOT free() or g_free()! */
	135	err_free_sample_buf:
	136	g_free(devc->sample_buf);
	137	err_free_compressed_buf:
	138	g_free(devc->compressed_buf);
	139	err_free_devc:
	140	g_free(devc);
	141
	142	return NULL;
	143	}
	144
	145	static int dev_open(struct sr_dev_inst *sdi)
	146	{
	147	struct dev_context *devc;
	148	int ret;
	149
	150	devc = sdi->priv;
	151
	152	/* Select interface A, otherwise communication will fail. */
	153	ret = ftdi_set_interface(devc->ftdic, INTERFACE_A);
	154	if (ret < 0) {
	155	sr_err("Failed to set FTDI interface A (%d): %s", ret,
	156	ftdi_get_error_string(devc->ftdic));
	157	return SR_ERR;
	158	}
	159	sr_dbg("FTDI chip interface A set successfully.");
	160
	161	/* Open the device. */
	162	ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, USB_DEVICE_ID,
	163	USB_IPRODUCT, NULL);
	164	if (ret < 0) {
	165	sr_err("Failed to open device (%d): %s", ret,
	166	ftdi_get_error_string(devc->ftdic));
	167	return SR_ERR;
	168	}
	169	sr_dbg("FTDI device opened successfully.");
	170
	171	/* Purge RX/TX buffers in the FTDI chip. */
	172	if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) {
	173	sr_err("Failed to purge FTDI RX/TX buffers (%d): %s.",
	174	ret, ftdi_get_error_string(devc->ftdic));
	175	goto err_dev_open_close_ftdic;
	176	}
	177	sr_dbg("FTDI chip buffers purged successfully.");
	178
	179	/* Reset the FTDI bitmode. */
	180	ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_RESET);
	181	if (ret < 0) {
	182	sr_err("Failed to reset the FTDI chip bitmode (%d): %s.",
	183	ret, ftdi_get_error_string(devc->ftdic));
	184	goto err_dev_open_close_ftdic;
	185	}
	186	sr_dbg("FTDI chip bitmode reset successfully.");
	187
	188	/* Set FTDI bitmode to "sync FIFO". */
	189	ret = ftdi_set_bitmode(devc->ftdic, 0xff, BITMODE_SYNCFF);
	190	if (ret < 0) {
	191	sr_err("Failed to put FTDI chip into sync FIFO mode (%d): %s.",
	192	ret, ftdi_get_error_string(devc->ftdic));
	193	goto err_dev_open_close_ftdic;
	194	}
	195	sr_dbg("FTDI chip sync FIFO mode entered successfully.");
	196
	197	/* Set the FTDI latency timer to 2. */
	198	ret = ftdi_set_latency_timer(devc->ftdic, 2);
	199	if (ret < 0) {
	200	sr_err("Failed to set FTDI latency timer (%d): %s.",
	201	ret, ftdi_get_error_string(devc->ftdic));
	202	goto err_dev_open_close_ftdic;
	203	}
	204	sr_dbg("FTDI chip latency timer set successfully.");
	205
	206	/* Set the FTDI read data chunk size to 64kB. */
	207	ret = ftdi_read_data_set_chunksize(devc->ftdic, 64 * 1024);
	208	if (ret < 0) {
	209	sr_err("Failed to set FTDI read data chunk size (%d): %s.",
	210	ret, ftdi_get_error_string(devc->ftdic));
	211	goto err_dev_open_close_ftdic;
	212	}
	213	sr_dbg("FTDI chip read data chunk size set successfully.");
	214
	215	/* Get the ScanaPLUS device ID from the FTDI EEPROM. */
	216	if ((ret = scanaplus_get_device_id(devc)) < 0) {
	217	sr_err("Failed to get ScanaPLUS device ID: %d.", ret);
	218	goto err_dev_open_close_ftdic;
	219	}
	220	sr_dbg("Received ScanaPLUS device ID successfully: %02x %02x %02x.",
	221	devc->devid[0], devc->devid[1], devc->devid[2]);
	222
	223	sdi->status = SR_ST_ACTIVE;
	224
	225	return SR_OK;
	226
	227	err_dev_open_close_ftdic:
	228	scanaplus_close(devc);
	229	return SR_ERR;
	230	}
	231
	232	static int dev_close(struct sr_dev_inst *sdi)
	233	{
	234	int ret;
	235	struct dev_context *devc;
	236
	237	ret = SR_OK;
	238	devc = sdi->priv;
	239
	240	if (sdi->status == SR_ST_ACTIVE) {
	241	sr_dbg("Status ACTIVE, closing device.");
	242	ret = scanaplus_close(devc);
	243	} else {
	244	sr_spew("Status not ACTIVE, nothing to do.");
	245	}
	246
	247	sdi->status = SR_ST_INACTIVE;
	248
	249	return ret;
	250	}
	251
	252	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	253	const struct sr_channel_group *cg)
	254	{
	255	(void)sdi;
	256	(void)cg;
	257
	258	switch (key) {
	259	case SR_CONF_SAMPLERATE:
	260	/* The ScanaPLUS samplerate is 100MHz and can't be changed. */
	261	*data = g_variant_new_uint64(SR_MHZ(100));
	262	break;
	263	default:
	264	return SR_ERR_NA;
	265	}
	266
	267	return SR_OK;
	268	}
	269
	270	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	271	const struct sr_channel_group *cg)
	272	{
	273	struct dev_context *devc;
	274
	275	(void)cg;
	276
	277	if (sdi->status != SR_ST_ACTIVE)
	278	return SR_ERR_DEV_CLOSED;
	279
	280	devc = sdi->priv;
	281
	282	switch (key) {
	283	case SR_CONF_SAMPLERATE:
	284	if (g_variant_get_uint64(data) != SR_MHZ(100)) {
	285	sr_err("ScanaPLUS only supports samplerate = 100MHz.");
	286	return SR_ERR_ARG;
	287	}
	288	/* Nothing to do, the ScanaPLUS samplerate is always 100MHz. */
	289	break;
	290	case SR_CONF_LIMIT_MSEC:
	291	if (g_variant_get_uint64(data) == 0)
	292	return SR_ERR_ARG;
	293	devc->limit_msec = g_variant_get_uint64(data);
	294	break;
	295	case SR_CONF_LIMIT_SAMPLES:
	296	if (g_variant_get_uint64(data) == 0)
	297	return SR_ERR_ARG;
	298	devc->limit_samples = g_variant_get_uint64(data);
	299	break;
	300	default:
	301	return SR_ERR_NA;
	302	}
	303
	304	return SR_OK;
	305	}
	306
	307	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	308	const struct sr_channel_group *cg)
	309	{
	310	GVariant *gvar;
	311	GVariantBuilder gvb;
	312
	313	(void)sdi;
	314	(void)cg;
	315
	316	switch (key) {
	317	case SR_CONF_DEVICE_OPTIONS:
	318	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	319	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	320	break;
	321	case SR_CONF_SAMPLERATE:
	322	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	323	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
	324	samplerates, ARRAY_SIZE(samplerates),
	325	sizeof(uint64_t));
	326	g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
	327	*data = g_variant_builder_end(&gvb);
	328	break;
	329	default:
	330	return SR_ERR_NA;
	331	}
	332
	333	return SR_OK;
	334	}
	335
	336	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	337	{
	338	int ret;
	339	struct dev_context *devc;
	340
	341	if (sdi->status != SR_ST_ACTIVE)
	342	return SR_ERR_DEV_CLOSED;
	343
	344	devc = sdi->priv;
	345
	346	if (!devc->ftdic)
	347	return SR_ERR_BUG;
	348
	349	/* TODO: Configure channels later (thresholds etc.). */
	350
	351	/* Properly reset internal variables before every new acquisition. */
	352	devc->compressed_bytes_ignored = 0;
	353	devc->samples_sent = 0;
	354	devc->bytes_received = 0;
	355
	356	if ((ret = scanaplus_init(devc)) < 0)
	357	return ret;
	358
	359	if ((ret = scanaplus_start_acquisition(devc)) < 0)
	360	return ret;
	361
	362	std_session_send_df_header(sdi, LOG_PREFIX);
	363
	364	/* Hook up a dummy handler to receive data from the device. */
	365	sr_session_source_add(sdi->session, -1, 0, 0, scanaplus_receive_data, (void *)sdi);
	366
	367	return SR_OK;
	368	}
	369
	370	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	371	{
	372	sr_dbg("Stopping acquisition.");
	373	sr_session_source_remove(sdi->session, -1);
	374	std_session_send_df_end(sdi, LOG_PREFIX);
	375
	376	return SR_OK;
	377	}
	378
	379	static struct sr_dev_driver ikalogic_scanaplus_driver_info = {
	380	.name = "ikalogic-scanaplus",
	381	.longname = "IKALOGIC ScanaPLUS",
	382	.api_version = 1,
	383	.init = std_init,
	384	.cleanup = std_cleanup,
	385	.scan = scan,
	386	.dev_list = std_dev_list,
	387	.dev_clear = dev_clear,
	388	.config_get = config_get,
	389	.config_set = config_set,
	390	.config_list = config_list,
	391	.dev_open = dev_open,
	392	.dev_close = dev_close,
	393	.dev_acquisition_start = dev_acquisition_start,
	394	.dev_acquisition_stop = dev_acquisition_stop,
	395	.context = NULL,
	396	};
	397	SR_REGISTER_DEV_DRIVER(ikalogic_scanaplus_driver_info);