[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, see <http://www.gnu.org/licenses/>.
 */

#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 void clear_helper(struct dev_context *devc)
{
	ftdi_free(devc->ftdic);
	g_free(devc->compressed_buf);
	g_free(devc->sample_buf);
}

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

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

	(void)options;

	/* 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->priv = devc;

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

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

	return std_scan_complete(di, g_slist_append(NULL, sdi));

	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;
	}

	/* 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;
	}

	/* 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;
	}

	/* 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;
	}

	/* 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;
	}

	/* 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;
	}

	/* 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;
	}

	/* 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]);

	return SR_OK;

err_dev_open_close_ftdic:
	scanaplus_close(devc);

	return SR_ERR;
}

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

	devc = sdi->priv;

	return scanaplus_close(devc);
}

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;

	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;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, NULL, NULL, devopts);
	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;

	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);

	/* 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_session_source_remove(sdi->session, -1);
	std_session_send_df_end(sdi);

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