[libsigrok.git] / hardware / kecheng-kc-330b / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
 *
 * 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 <string.h>
#include "protocol.h"

#define USB_CONN "1041.8101"
#define VENDOR "Kecheng"
#define USB_INTERFACE 0

static const int32_t hwcaps[] = {
	SR_CONF_SOUNDLEVELMETER,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_CONTINUOUS,
	SR_CONF_DATALOG,
	SR_CONF_SPL_WEIGHT_FREQ,
	SR_CONF_SPL_WEIGHT_TIME,
	SR_CONF_DATA_SOURCE,
};

SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = {
	{ 1, 8 },
	{ 1, 2 },
	{ 1, 1 },
	{ 2, 1 },
	{ 5, 1 },
	{ 10, 1 },
	{ 60, 1 },
};

static const char *weight_freq[] = {
	"A",
	"C",
};

static const char *weight_time[] = {
	"F",
	"S",
};

static const char *data_sources[] = {
	"Live",
	"Memory",
};

SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info;


static int init(struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

static int scan_kecheng(struct sr_usb_dev_inst *usb, char **model)
{
	struct drv_context *drvc;
	int len, ret;
	unsigned char cmd, buf[32];

	drvc = di->priv;
	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
		return SR_ERR;

	cmd = CMD_IDENTIFY;
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
	if (ret != 0) {
		libusb_close(usb->devhdl);
		sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10);
	if (ret != 0) {
		libusb_close(usb->devhdl);
		sr_dbg("Failed to receive response: %s", libusb_error_name(ret));
		return SR_ERR;
	}

	libusb_close(usb->devhdl);
	usb->devhdl = NULL;

	if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) {
		sr_dbg("Invalid response to Identify command");
		return SR_ERR;
	}

	buf[buf[1] + 2] = '\x0';
	*model = g_strndup((const gchar *)buf + 2, 30);
	//g_strstrip(*model);

	return SR_OK;
}

static GSList *scan(GSList *options)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_probe *probe;
	GSList *usb_devices, *devices, *l;
	char *model;

	(void)options;

	drvc = di->priv;
	drvc->instances = NULL;

	devices = NULL;
	if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) {
		/* We have a list of sr_usb_dev_inst matching the connection
		 * string. Wrap them in sr_dev_inst and we're done. */
		for (l = usb_devices; l; l = l->next) {
			if (scan_kecheng(l->data, &model) != SR_OK)
				continue;
			if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR,
					model, NULL)))
				return NULL;
			g_free(model);
			sdi->driver = di;
			sdi->inst_type = SR_INST_USB;
			sdi->conn = l->data;
			if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "SPL")))
				return NULL;
			sdi->probes = g_slist_append(sdi->probes, probe);

			if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
				sr_dbg("Device context malloc failed.");
				return NULL;
			}
			sdi->priv = devc;
			devc->limit_samples = 0;
			/* The protocol provides no way to read the current
			 * settings, so we'll enforce these. */
			devc->sample_interval = DEFAULT_SAMPLE_INTERVAL;
			devc->alarm_low = DEFAULT_ALARM_LOW;
			devc->alarm_high = DEFAULT_ALARM_HIGH;
			devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ;
			devc->data_source = DEFAULT_DATA_SOURCE;

			/* TODO: Set date/time? */

			drvc->instances = g_slist_append(drvc->instances, sdi);
			devices = g_slist_append(devices, sdi);
		}
		g_slist_free(usb_devices);
	} else
		g_slist_free_full(usb_devices, g_free);

	return devices;
}

static GSList *dev_list(void)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->instances;
}

static int dev_clear(void)
{
	return std_dev_clear(di, NULL);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	int ret;

	if (!(drvc = di->priv)) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	usb = sdi->conn;

	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
		return SR_ERR;

	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
		sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
		return SR_ERR;
	}
	sdi->status = SR_ST_ACTIVE;

	/* Force configuration. */
	ret = kecheng_kc_330b_configure(sdi);

	return ret;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_usb_dev_inst *usb;

	if (!di->priv) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	usb = sdi->conn;

	if (!usb->devhdl)
		/*  Nothing to do. */
		return SR_OK;

	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	libusb_close(usb->devhdl);
	usb->devhdl = NULL;
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(void)
{
	int ret;
	struct drv_context *drvc;

	if (!(drvc = di->priv))
		/* Can get called on an unused driver, doesn't matter. */
		return SR_OK;

	ret = dev_clear();
	g_free(drvc);
	di->priv = NULL;

	return ret;
}

static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	GVariant *rational[2];
	const uint64_t *si;
	int tmp, ret;

	devc = sdi->priv;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_SAMPLE_INTERVAL:
		si = kecheng_kc_330b_sample_intervals[devc->sample_interval];
		rational[0] = g_variant_new_uint64(si[0]);
		rational[1] = g_variant_new_uint64(si[1]);
		*data = g_variant_new_tuple(rational, 2);
		break;
	case SR_CONF_DATALOG:
		if ((ret = kecheng_kc_330b_recording_get(sdi, &tmp)) == SR_OK)
			*data = g_variant_new_boolean(tmp);
		else
			return SR_ERR;
		break;
	case SR_CONF_SPL_WEIGHT_FREQ:
		if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
			*data = g_variant_new_string("A");
		else
			*data = g_variant_new_string("C");
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F)
			*data = g_variant_new_string("F");
		else
			*data = g_variant_new_string("S");
		break;
	case SR_CONF_DATA_SOURCE:
		if (devc->data_source == DATA_SOURCE_LIVE)
			*data = g_variant_new_string("Live");
		else
			*data = g_variant_new_string("Memory");
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	uint64_t p, q;
	unsigned int i;
	int tmp, ret;
	const char *tmp_str;

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

	if (!di->priv) {
		sr_err("Driver was not initialized.");
		return SR_ERR;
	}

	devc = sdi->priv;
	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_samples = g_variant_get_uint64(data);
		sr_dbg("Setting sample limit to %" PRIu64 ".",
		       devc->limit_samples);
		break;
	case SR_CONF_SAMPLE_INTERVAL:
		g_variant_get(data, "(tt)", &p, &q);
		for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
			if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q)
				continue;
			devc->sample_interval = i;
			kecheng_kc_330b_configure(sdi);
			break;
		}
		if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals))
			ret = SR_ERR_ARG;
		break;
	case SR_CONF_SPL_WEIGHT_FREQ:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "A"))
			tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A;
		else if (!strcmp(tmp_str, "C"))
			tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C;
		else
			return SR_ERR_ARG;
		devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C);
		devc->mqflags |= tmp;
		kecheng_kc_330b_configure(sdi);
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "F"))
			tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F;
		else if (!strcmp(tmp_str, "S"))
			tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S;
		else
			return SR_ERR_ARG;
		devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S);
		devc->mqflags |= tmp;
		kecheng_kc_330b_configure(sdi);
		break;
	case SR_CONF_DATA_SOURCE:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "Live"))
			devc->data_source = DATA_SOURCE_LIVE;
		else if (!strcmp(tmp_str, "Memory"))
			devc->data_source = DATA_SOURCE_MEMORY;
		else
			return SR_ERR;
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{
	GVariant *tuple, *rational[2];
	GVariantBuilder gvb;
	unsigned int i;

	(void)sdi;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
		break;
	case SR_CONF_SAMPLE_INTERVAL:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
			rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]);
			rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]);
			tuple = g_variant_new_tuple(rational, 2);
			g_variant_builder_add_value(&gvb, tuple);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_SPL_WEIGHT_FREQ:
		*data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		*data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time));
		break;
	case SR_CONF_DATA_SOURCE:
		*data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_usb_dev_inst *usb;
	const struct libusb_pollfd **pfd;
	int len, ret, i;
	unsigned char cmd;

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

	drvc = di->priv;
	devc = sdi->priv;
	usb = sdi->conn;

	devc->cb_data = cb_data;
	devc->num_samples = 0;

	if (!(devc->xfer = libusb_alloc_transfer(0)))
		return SR_ERR;

	/* Send header packet to the session bus. */
	std_session_send_df_header(cb_data, LOG_PREFIX);

	pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
	for (i = 0; pfd[i]; i++) {
		/* Handle USB events every 10ms. */
		sr_source_add(pfd[i]->fd, pfd[i]->events, 10,
				kecheng_kc_330b_handle_events, (void *)sdi);
		/* We'll need to remove this fd later. */
		devc->usbfd[i] = pfd[i]->fd;
	}
	devc->usbfd[i] = -1;

	cmd = CMD_GET_LIVE_SPL;
	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
	if (ret != 0 || len != 1) {
		sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
		libusb_free_transfer(devc->xfer);
		return SR_ERR;
	}
	devc->last_live_request = g_get_monotonic_time() / 1000;

	libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
			16, kecheng_kc_330b_receive_transfer, (void *)sdi, 15);
	if (libusb_submit_transfer(devc->xfer) != 0) {
		libusb_free_transfer(devc->xfer);
		return SR_ERR;
	}
	devc->state = LIVE_SPL_WAIT;

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	(void)cb_data;

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

	/* Signal USB transfer handler to clean up and stop. */
	sdi->status = SR_ST_STOPPING;

	return SR_OK;
}

SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
	.name = "kecheng-kc-330b",
	.longname = "Kecheng KC-330B",
	.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_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
ed759a08 BV	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
	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
bc7be4a9	20	#include <string.h>
ed759a08 BV	21	#include "protocol.h"
ed759a08 BV	22
a8806f03 BV	23	#define USB_CONN "1041.8101"
	24	#define VENDOR "Kecheng"
	25	#define USB_INTERFACE 0
a8806f03 BV	26
	27	static const int32_t hwcaps[] = {
	28	SR_CONF_SOUNDLEVELMETER,
	29	SR_CONF_LIMIT_SAMPLES,
	30	SR_CONF_CONTINUOUS,
bc7be4a9 BV	31	SR_CONF_DATALOG,
	32	SR_CONF_SPL_WEIGHT_FREQ,
	33	SR_CONF_SPL_WEIGHT_TIME,
	34	SR_CONF_DATA_SOURCE,
	35	};
	36
df035528	37	SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = {
bc7be4a9 BV	38	{ 1, 8 },
	39	{ 1, 2 },
	40	{ 1, 1 },
	41	{ 2, 1 },
	42	{ 5, 1 },
	43	{ 10, 1 },
	44	{ 60, 1 },
	45	};
	46
	47	static const char *weight_freq[] = {
	48	"A",
	49	"C",
	50	};
	51
	52	static const char *weight_time[] = {
	53	"F",
	54	"S",
	55	};
	56
	57	static const char *data_sources[] = {
	58	"Live",
	59	"Memory",
a8806f03 BV	60	};
a8806f03 BV	61
ed759a08 BV	62	SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
	63	static struct sr_dev_driver *di = &kecheng_kc_330b_driver_info;
	64
	65
	66	static int init(struct sr_context *sr_ctx)
	67	{
	68	return std_init(sr_ctx, di, LOG_PREFIX);
	69	}
	70
a8806f03 BV	71	static int scan_kecheng(struct sr_usb_dev_inst usb, char *model)
	72	{
	73	struct drv_context *drvc;
	74	int len, ret;
	75	unsigned char cmd, buf[32];
	76
	77	drvc = di->priv;
	78	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
	79	return SR_ERR;
	80
	81	cmd = CMD_IDENTIFY;
	82	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
	83	if (ret != 0) {
	84	libusb_close(usb->devhdl);
	85	sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret));
	86	return SR_ERR;
	87	}
	88
	89	ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10);
	90	if (ret != 0) {
	91	libusb_close(usb->devhdl);
	92	sr_dbg("Failed to receive response: %s", libusb_error_name(ret));
	93	return SR_ERR;
	94	}
	95
	96	libusb_close(usb->devhdl);
	97	usb->devhdl = NULL;
	98
	99	if (len < 2 \|\| buf[0] != (CMD_IDENTIFY \| 0x80) \|\| buf[1] > 30) {
	100	sr_dbg("Invalid response to Identify command");
	101	return SR_ERR;
	102	}
	103
	104	buf[buf[1] + 2] = '\x0';
	105	model = g_strndup((const gchar )buf + 2, 30);
	106	//g_strstrip(*model);
	107
	108	return SR_OK;
	109	}
	110
ed759a08 BV	111	static GSList scan(GSList options)
	112	{
	113	struct drv_context *drvc;
a8806f03 BV	114	struct dev_context *devc;
	115	struct sr_dev_inst *sdi;
	116	struct sr_probe *probe;
	117	GSList usb_devices, devices, *l;
	118	char *model;
ed759a08 BV	119
	120	(void)options;
	121
ed759a08 BV	122	drvc = di->priv;
	123	drvc->instances = NULL;
	124
a8806f03 BV	125	devices = NULL;
	126	if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) {
	127	/* We have a list of sr_usb_dev_inst matching the connection
	128	* string. Wrap them in sr_dev_inst and we're done. */
	129	for (l = usb_devices; l; l = l->next) {
	130	if (scan_kecheng(l->data, &model) != SR_OK)
	131	continue;
	132	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR,
	133	model, NULL)))
	134	return NULL;
	135	g_free(model);
	136	sdi->driver = di;
	137	sdi->inst_type = SR_INST_USB;
	138	sdi->conn = l->data;
	139	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "SPL")))
	140	return NULL;
	141	sdi->probes = g_slist_append(sdi->probes, probe);
	142
	143	if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
	144	sr_dbg("Device context malloc failed.");
	145	return NULL;
	146	}
	147	sdi->priv = devc;
	148	devc->limit_samples = 0;
bc7be4a9 BV	149	/* The protocol provides no way to read the current
	150	* settings, so we'll enforce these. */
	151	devc->sample_interval = DEFAULT_SAMPLE_INTERVAL;
	152	devc->alarm_low = DEFAULT_ALARM_LOW;
	153	devc->alarm_high = DEFAULT_ALARM_HIGH;
	154	devc->mqflags = DEFAULT_WEIGHT_TIME \| DEFAULT_WEIGHT_FREQ;
	155	devc->data_source = DEFAULT_DATA_SOURCE;
	156
	157	/* TODO: Set date/time? */
a8806f03 BV	158
	159	drvc->instances = g_slist_append(drvc->instances, sdi);
	160	devices = g_slist_append(devices, sdi);
	161	}
	162	g_slist_free(usb_devices);
	163	} else
	164	g_slist_free_full(usb_devices, g_free);
ed759a08 BV	165
	166	return devices;
	167	}
	168
	169	static GSList *dev_list(void)
	170	{
	171	struct drv_context *drvc;
	172
	173	drvc = di->priv;
	174
	175	return drvc->instances;
	176	}
	177
	178	static int dev_clear(void)
	179	{
	180	return std_dev_clear(di, NULL);
	181	}
	182
	183	static int dev_open(struct sr_dev_inst *sdi)
	184	{
a8806f03 BV	185	struct drv_context *drvc;
	186	struct sr_usb_dev_inst *usb;
	187	int ret;
	188
	189	if (!(drvc = di->priv)) {
	190	sr_err("Driver was not initialized.");
	191	return SR_ERR;
	192	}
	193
	194	usb = sdi->conn;
ed759a08	195
a8806f03 BV	196	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
a8806f03 BV	197	return SR_ERR;
ed759a08	198
a8806f03 BV	199	if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) {
	200	sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
	201	return SR_ERR;
	202	}
ed759a08 BV	203	sdi->status = SR_ST_ACTIVE;
ed759a08 BV	204
bc7be4a9 BV	205	/* Force configuration. */
	206	ret = kecheng_kc_330b_configure(sdi);
	207
a8806f03	208	return ret;
ed759a08 BV	209	}
	210
	211	static int dev_close(struct sr_dev_inst *sdi)
	212	{
a8806f03 BV	213	struct sr_usb_dev_inst *usb;
	214
	215	if (!di->priv) {
	216	sr_err("Driver was not initialized.");
	217	return SR_ERR;
	218	}
	219
	220	usb = sdi->conn;
ed759a08	221
a8806f03 BV	222	if (!usb->devhdl)
	223	/* Nothing to do. */
	224	return SR_OK;
ed759a08	225
a8806f03 BV	226	libusb_release_interface(usb->devhdl, USB_INTERFACE);
	227	libusb_close(usb->devhdl);
	228	usb->devhdl = NULL;
ed759a08 BV	229	sdi->status = SR_ST_INACTIVE;
	230
	231	return SR_OK;
	232	}
	233
	234	static int cleanup(void)
	235	{
a8806f03 BV	236	int ret;
a8806f03 BV	237	struct drv_context *drvc;
ed759a08	238
a8806f03 BV	239	if (!(drvc = di->priv))
	240	/* Can get called on an unused driver, doesn't matter. */
	241	return SR_OK;
ed759a08	242
a8806f03 BV	243	ret = dev_clear();
	244	g_free(drvc);
	245	di->priv = NULL;
	246
	247	return ret;
ed759a08 BV	248	}
	249
	250	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi)
	251	{
a8806f03	252	struct dev_context *devc;
bc7be4a9 BV	253	GVariant *rational[2];
	254	const uint64_t *si;
	255	int tmp, ret;
ed759a08	256
a8806f03	257	devc = sdi->priv;
ed759a08	258	switch (key) {
a8806f03 BV	259	case SR_CONF_LIMIT_SAMPLES:
	260	*data = g_variant_new_uint64(devc->limit_samples);
	261	break;
bc7be4a9	262	case SR_CONF_SAMPLE_INTERVAL:
df035528	263	si = kecheng_kc_330b_sample_intervals[devc->sample_interval];
bc7be4a9 BV	264	rational[0] = g_variant_new_uint64(si[0]);
	265	rational[1] = g_variant_new_uint64(si[1]);
	266	*data = g_variant_new_tuple(rational, 2);
	267	break;
	268	case SR_CONF_DATALOG:
	269	if ((ret = kecheng_kc_330b_recording_get(sdi, &tmp)) == SR_OK)
	270	*data = g_variant_new_boolean(tmp);
	271	else
	272	return SR_ERR;
	273	break;
	274	case SR_CONF_SPL_WEIGHT_FREQ:
	275	if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
	276	*data = g_variant_new_string("A");
	277	else
	278	*data = g_variant_new_string("C");
	279	break;
	280	case SR_CONF_SPL_WEIGHT_TIME:
	281	if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F)
	282	*data = g_variant_new_string("F");
	283	else
	284	*data = g_variant_new_string("S");
	285	break;
	286	case SR_CONF_DATA_SOURCE:
	287	if (devc->data_source == DATA_SOURCE_LIVE)
	288	*data = g_variant_new_string("Live");
	289	else
	290	*data = g_variant_new_string("Memory");
	291	break;
ed759a08 BV	292	default:
	293	return SR_ERR_NA;
	294	}
	295
a8806f03	296	return SR_OK;
ed759a08 BV	297	}
	298
	299	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi)
	300	{
a8806f03	301	struct dev_context *devc;
bc7be4a9 BV	302	uint64_t p, q;
	303	unsigned int i;
	304	int tmp, ret;
	305	const char *tmp_str;
ed759a08	306
ed759a08 BV	307	if (sdi->status != SR_ST_ACTIVE)
	308	return SR_ERR_DEV_CLOSED;
	309
a8806f03 BV	310	if (!di->priv) {
	311	sr_err("Driver was not initialized.");
	312	return SR_ERR;
	313	}
	314
	315	devc = sdi->priv;
ed759a08 BV	316	ret = SR_OK;
ed759a08 BV	317	switch (key) {
a8806f03 BV	318	case SR_CONF_LIMIT_SAMPLES:
	319	devc->limit_samples = g_variant_get_uint64(data);
	320	sr_dbg("Setting sample limit to %" PRIu64 ".",
	321	devc->limit_samples);
	322	break;
bc7be4a9 BV	323	case SR_CONF_SAMPLE_INTERVAL:
bc7be4a9 BV	324	g_variant_get(data, "(tt)", &p, &q);
df035528 BV	325	for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
df035528 BV	326	if (kecheng_kc_330b_sample_intervals[i][0] != p \|\| kecheng_kc_330b_sample_intervals[i][1] != q)
bc7be4a9 BV	327	continue;
	328	devc->sample_interval = i;
	329	kecheng_kc_330b_configure(sdi);
	330	break;
	331	}
df035528	332	if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals))
bc7be4a9 BV	333	ret = SR_ERR_ARG;
	334	break;
	335	case SR_CONF_SPL_WEIGHT_FREQ:
	336	tmp_str = g_variant_get_string(data, NULL);
	337	if (!strcmp(tmp_str, "A"))
	338	tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A;
	339	else if (!strcmp(tmp_str, "C"))
	340	tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C;
	341	else
	342	return SR_ERR_ARG;
	343	devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A \| SR_MQFLAG_SPL_FREQ_WEIGHT_C);
	344	devc->mqflags \|= tmp;
	345	kecheng_kc_330b_configure(sdi);
	346	break;
	347	case SR_CONF_SPL_WEIGHT_TIME:
	348	tmp_str = g_variant_get_string(data, NULL);
	349	if (!strcmp(tmp_str, "F"))
	350	tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F;
	351	else if (!strcmp(tmp_str, "S"))
	352	tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S;
	353	else
	354	return SR_ERR_ARG;
	355	devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F \| SR_MQFLAG_SPL_TIME_WEIGHT_S);
	356	devc->mqflags \|= tmp;
	357	kecheng_kc_330b_configure(sdi);
	358	break;
	359	case SR_CONF_DATA_SOURCE:
	360	tmp_str = g_variant_get_string(data, NULL);
	361	if (!strcmp(tmp_str, "Live"))
	362	devc->data_source = DATA_SOURCE_LIVE;
	363	else if (!strcmp(tmp_str, "Memory"))
	364	devc->data_source = DATA_SOURCE_MEMORY;
	365	else
	366	return SR_ERR;
	367	break;
ed759a08 BV	368	default:
	369	ret = SR_ERR_NA;
	370	}
	371
	372	return ret;
	373	}
	374
	375	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	376	{
bc7be4a9 BV	377	GVariant tuple, rational[2];
	378	GVariantBuilder gvb;
	379	unsigned int i;
ed759a08 BV	380
ed759a08 BV	381	(void)sdi;
ed759a08	382
ed759a08	383	switch (key) {
a8806f03 BV	384	case SR_CONF_DEVICE_OPTIONS:
	385	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	386	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	387	break;
bc7be4a9 BV	388	case SR_CONF_SAMPLE_INTERVAL:
bc7be4a9 BV	389	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
df035528 BV	390	for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) {
	391	rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]);
	392	rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]);
bc7be4a9 BV	393	tuple = g_variant_new_tuple(rational, 2);
	394	g_variant_builder_add_value(&gvb, tuple);
	395	}
	396	*data = g_variant_builder_end(&gvb);
	397	break;
	398	case SR_CONF_SPL_WEIGHT_FREQ:
	399	*data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq));
	400	break;
	401	case SR_CONF_SPL_WEIGHT_TIME:
	402	*data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time));
	403	break;
	404	case SR_CONF_DATA_SOURCE:
	405	*data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources));
	406	break;
ed759a08 BV	407	default:
	408	return SR_ERR_NA;
	409	}
	410
a8806f03	411	return SR_OK;
ed759a08 BV	412	}
	413
	414	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	415	void *cb_data)
	416	{
bc7be4a9 BV	417	struct drv_context *drvc;
	418	struct dev_context *devc;
	419	struct sr_usb_dev_inst *usb;
	420	const struct libusb_pollfd **pfd;
	421	int len, ret, i;
	422	unsigned char cmd;
ed759a08 BV	423
	424	if (sdi->status != SR_ST_ACTIVE)
	425	return SR_ERR_DEV_CLOSED;
	426
bc7be4a9 BV	427	drvc = di->priv;
	428	devc = sdi->priv;
	429	usb = sdi->conn;
	430
	431	devc->cb_data = cb_data;
	432	devc->num_samples = 0;
	433
df035528 BV	434	if (!(devc->xfer = libusb_alloc_transfer(0)))
	435	return SR_ERR;
	436
bc7be4a9 BV	437	/* Send header packet to the session bus. */
	438	std_session_send_df_header(cb_data, LOG_PREFIX);
	439
	440	pfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
	441	for (i = 0; pfd[i]; i++) {
df035528 BV	442	/* Handle USB events every 10ms. */
df035528 BV	443	sr_source_add(pfd[i]->fd, pfd[i]->events, 10,
bc7be4a9 BV	444	kecheng_kc_330b_handle_events, (void *)sdi);
	445	/* We'll need to remove this fd later. */
	446	devc->usbfd[i] = pfd[i]->fd;
	447	}
	448	devc->usbfd[i] = -1;
	449
	450	cmd = CMD_GET_LIVE_SPL;
	451	ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5);
	452	if (ret != 0 \|\| len != 1) {
	453	sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret));
df035528 BV	454	libusb_free_transfer(devc->xfer);
	455	return SR_ERR;
	456	}
	457	devc->last_live_request = g_get_monotonic_time() / 1000;
	458
	459	libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf,
	460	16, kecheng_kc_330b_receive_transfer, (void *)sdi, 15);
	461	if (libusb_submit_transfer(devc->xfer) != 0) {
	462	libusb_free_transfer(devc->xfer);
bc7be4a9 BV	463	return SR_ERR;
bc7be4a9 BV	464	}
df035528	465	devc->state = LIVE_SPL_WAIT;
ed759a08 BV	466
	467	return SR_OK;
	468	}
	469
	470	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	471	{
	472	(void)cb_data;
	473
	474	if (sdi->status != SR_ST_ACTIVE)
	475	return SR_ERR_DEV_CLOSED;
	476
df035528 BV	477	/* Signal USB transfer handler to clean up and stop. */
df035528 BV	478	sdi->status = SR_ST_STOPPING;
ed759a08 BV	479
	480	return SR_OK;
	481	}
	482
	483	SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
	484	.name = "kecheng-kc-330b",
	485	.longname = "Kecheng KC-330B",
	486	.api_version = 1,
	487	.init = init,
	488	.cleanup = cleanup,
	489	.scan = scan,
	490	.dev_list = dev_list,
	491	.dev_clear = dev_clear,
	492	.config_get = config_get,
	493	.config_set = config_set,
	494	.config_list = config_list,
	495	.dev_open = dev_open,
	496	.dev_close = dev_close,
	497	.dev_acquisition_start = dev_acquisition_start,
	498	.dev_acquisition_stop = dev_acquisition_stop,
	499	.priv = NULL,
	500	};