X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Fopenbench-logic-sniffer%2Fapi.c;h=ff48d4ddebe94a1c54ab6d0b2bbd83b9be59584d;hb=f0de2dd0fa67b61e755b04657b132282acc1c9a0;hp=c3e1647d3bbb1cf352d3f2945aa2b03b4c213b4f;hpb=786934010365a0b33aa8a32a7dc62a2975dba4c7;p=libsigrok.git

diff --git a/hardware/openbench-logic-sniffer/api.c b/hardware/openbench-logic-sniffer/api.c
index c3e1647d..ff48d4dd 100644
--- a/hardware/openbench-logic-sniffer/api.c
+++ b/hardware/openbench-logic-sniffer/api.c
@@ -1,7 +1,7 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
  *
- * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
+ * 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
@@ -18,16 +18,45 @@
  */
 
 #include "protocol.h"
+#include <libserialport.h>
 
 #define SERIALCOMM "115200/8n1"
 
-static const int hwcaps[] = {
-	SR_HWCAP_LOGIC_ANALYZER,
-	SR_HWCAP_SAMPLERATE,
-	SR_HWCAP_CAPTURE_RATIO,
-	SR_HWCAP_LIMIT_SAMPLES,
-	SR_HWCAP_RLE,
-	0,
+static const int32_t hwopts[] = {
+	SR_CONF_CONN,
+	SR_CONF_SERIALCOMM,
+};
+
+static const int32_t hwcaps[] = {
+	SR_CONF_LOGIC_ANALYZER,
+	SR_CONF_SAMPLERATE,
+	SR_CONF_TRIGGER_TYPE,
+	SR_CONF_CAPTURE_RATIO,
+	SR_CONF_LIMIT_SAMPLES,
+	SR_CONF_EXTERNAL_CLOCK,
+	SR_CONF_PATTERN_MODE,
+	SR_CONF_SWAP,
+	SR_CONF_RLE,
+};
+
+#define STR_PATTERN_EXTERNAL "external"
+#define STR_PATTERN_INTERNAL "internal"
+
+/* Supported methods of test pattern outputs */
+enum {
+	/**
+	 * Capture pins 31:16 (unbuffered wing) output a test pattern
+	 * that can captured on pins 0:15.
+	 */
+	PATTERN_EXTERNAL,
+
+	/** Route test pattern internally to capture buffer. */
+	PATTERN_INTERNAL,
+};
+
+static const char *patterns[] = {
+	STR_PATTERN_EXTERNAL,
+	STR_PATTERN_INTERNAL,
 };
 
 /* Probes are numbered 0-31 (on the PCB silkscreen). */
@@ -38,34 +67,29 @@ SR_PRIV const char *ols_probe_names[NUM_PROBES + 1] = {
 	NULL,
 };
 
-/* default supported samplerates, can be overridden by device metadata */
-static const struct sr_samplerates samplerates = {
+/* Default supported samplerates, can be overridden by device metadata. */
+static const uint64_t samplerates[] = {
 	SR_HZ(10),
 	SR_MHZ(200),
 	SR_HZ(1),
-	NULL,
 };
 
 SR_PRIV struct sr_dev_driver ols_driver_info;
 static struct sr_dev_driver *di = &ols_driver_info;
 
-static int hw_init(struct sr_context *sr_ctx)
+static int dev_clear(void)
 {
-	struct drv_context *drvc;
-
-	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
-		sr_err("Driver context malloc failed.");
-		return SR_ERR_MALLOC;
-	}
-	drvc->sr_ctx = sr_ctx;
-	di->priv = drvc;
+	return std_dev_clear(di, NULL);
+}
 
-	return SR_OK;
+static int init(struct sr_context *sr_ctx)
+{
+	return std_init(sr_ctx, di, LOG_PREFIX);
 }
 
-static GSList *hw_scan(GSList *options)
+static GSList *scan(GSList *options)
 {
-	struct sr_hwopt *opt;
+	struct sr_config *src;
 	struct sr_dev_inst *sdi;
 	struct drv_context *drvc;
 	struct dev_context *devc;
@@ -77,19 +101,19 @@ static GSList *hw_scan(GSList *options)
 	const char *conn, *serialcomm;
 	char buf[8];
 
-	(void)options;
 	drvc = di->priv;
+
 	devices = NULL;
 
 	conn = serialcomm = NULL;
 	for (l = options; l; l = l->next) {
-		opt = l->data;
-		switch (opt->hwopt) {
-		case SR_HWOPT_CONN:
-			conn = opt->value;
+		src = l->data;
+		switch (src->key) {
+		case SR_CONF_CONN:
+			conn = g_variant_get_string(src->data, NULL);
 			break;
-		case SR_HWOPT_SERIALCOMM:
-			serialcomm = opt->value;
+		case SR_CONF_SERIALCOMM:
+			serialcomm = g_variant_get_string(src->data, NULL);
 			break;
 		}
 	}
@@ -129,13 +153,13 @@ static GSList *hw_scan(GSList *options)
 	/* Wait 10ms for a response. */
 	g_usleep(10000);
 
-	probefd.fd = serial->fd;
+	sp_get_port_handle(serial->data, &probefd.fd);
 	probefd.events = G_IO_IN;
 	g_poll(&probefd, 1, 1);
 
 	if (probefd.revents != G_IO_IN)
 		return NULL;
-	if (serial_read(serial, buf, 4) != 4)
+	if (serial_read_blocking(serial, buf, 4) != 4)
 		return NULL;
 	if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
 		return NULL;
@@ -151,19 +175,28 @@ static GSList *hw_scan(GSList *options)
 		devc = sdi->priv;
 	} else {
 		/* Not an OLS -- some other board that uses the sump protocol. */
+		sr_info("Device does not support metadata.");
 		sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
 				"Sump", "Logic Analyzer", "v1.0");
 		sdi->driver = di;
-		devc = ols_dev_new();
 		for (i = 0; i < 32; i++) {
 			if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
 					ols_probe_names[i])))
 				return 0;
 			sdi->probes = g_slist_append(sdi->probes, probe);
 		}
+		devc = ols_dev_new();
 		sdi->priv = devc;
 	}
-	devc->serial = serial;
+	/* Configure samplerate and divider. */
+	if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
+		sr_dbg("Failed to set default samplerate (%"PRIu64").",
+				DEFAULT_SAMPLERATE);
+	/* Clear trigger masks, values and stages. */
+	ols_configure_probes(sdi);
+	sdi->inst_type = SR_INST_SERIAL;
+	sdi->conn = serial;
+
 	drvc->instances = g_slist_append(drvc->instances, sdi);
 	devices = g_slist_append(devices, sdi);
 
@@ -172,169 +205,208 @@ static GSList *hw_scan(GSList *options)
 	return devices;
 }
 
-static GSList *hw_dev_list(void)
+static GSList *dev_list(void)
 {
-	struct drv_context *drvc;
-
-	drvc = di->priv;
-
-	return drvc->instances;
+	return ((struct drv_context *)(di->priv))->instances;
 }
 
-static int hw_dev_open(struct sr_dev_inst *sdi)
+static int cleanup(void)
 {
-	struct dev_context *devc;
-
-	devc = sdi->priv;
-
-	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
-		return SR_ERR;
-
-	sdi->status = SR_ST_ACTIVE;
-
-	return SR_OK;
+	return dev_clear();
 }
 
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
+		const struct sr_probe_group *probe_group)
 {
 	struct dev_context *devc;
 
-	devc = sdi->priv;
+	(void)probe_group;
 
-	if (devc->serial && devc->serial->fd != -1) {
-		serial_close(devc->serial);
-		sdi->status = SR_ST_INACTIVE;
-	}
-
-	return SR_OK;
-}
-
-static int hw_cleanup(void)
-{
-	GSList *l;
-	struct sr_dev_inst *sdi;
-	struct drv_context *drvc;
-	struct dev_context *devc;
-	int ret = SR_OK;
-
-	if (!(drvc = di->priv))
-		return SR_OK;
-
-	/* Properly close and free all devices. */
-	for (l = drvc->instances; l; l = l->next) {
-		if (!(sdi = l->data)) {
-			/* Log error, but continue cleaning up the rest. */
-			sr_err("%s: sdi was NULL, continuing", __func__);
-			ret = SR_ERR_BUG;
-			continue;
-		}
-		if (!(devc = sdi->priv)) {
-			/* Log error, but continue cleaning up the rest. */
-			sr_err("%s: sdi->priv was NULL, continuing", __func__);
-			ret = SR_ERR_BUG;
-			continue;
-		}
-		hw_dev_close(sdi);
-		sr_serial_dev_inst_free(devc->serial);
-		sr_dev_inst_free(sdi);
-	}
-	g_slist_free(drvc->instances);
-	drvc->instances = NULL;
-
-	return ret;
-}
-
-static int hw_info_get(int info_id, const void **data,
-       const struct sr_dev_inst *sdi)
-{
-	struct dev_context *devc;
+	if (!sdi)
+		return SR_ERR_ARG;
 
-	switch (info_id) {
-	case SR_DI_HWCAPS:
-		*data = hwcaps;
+	devc = sdi->priv;
+	switch (id) {
+	case SR_CONF_SAMPLERATE:
+		*data = g_variant_new_uint64(devc->cur_samplerate);
 		break;
-	case SR_DI_NUM_PROBES:
-		*data = GINT_TO_POINTER(1);
+	case SR_CONF_CAPTURE_RATIO:
+		*data = g_variant_new_uint64(devc->capture_ratio);
 		break;
-	case SR_DI_PROBE_NAMES:
-		*data = ols_probe_names;
+	case SR_CONF_LIMIT_SAMPLES:
+		*data = g_variant_new_uint64(devc->limit_samples);
 		break;
-	case SR_DI_SAMPLERATES:
-		*data = &samplerates;
+	case SR_CONF_PATTERN_MODE:
+		if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
+			*data = g_variant_new_string(STR_PATTERN_EXTERNAL);
+		else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
+			*data = g_variant_new_string(STR_PATTERN_INTERNAL);
 		break;
-	case SR_DI_TRIGGER_TYPES:
-		*data = (char *)TRIGGER_TYPES;
-		break;
-	case SR_DI_CUR_SAMPLERATE:
-		if (sdi) {
-			devc = sdi->priv;
-			*data = &devc->cur_samplerate;
-		} else
-			return SR_ERR;
+	case SR_CONF_RLE:
+		*data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
 		break;
 	default:
-		return SR_ERR_ARG;
+		return SR_ERR_NA;
 	}
 
 	return SR_OK;
 }
 
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
-		const void *value)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
+		const struct sr_probe_group *probe_group)
 {
 	struct dev_context *devc;
 	int ret;
-	const uint64_t *tmp_u64;
+	uint64_t tmp_u64;
+	const char *stropt;
 
-	devc = sdi->priv;
+	(void)probe_group;
 
 	if (sdi->status != SR_ST_ACTIVE)
-		return SR_ERR;
+		return SR_ERR_DEV_CLOSED;
+
+	devc = sdi->priv;
 
-	switch (hwcap) {
-	case SR_HWCAP_SAMPLERATE:
-		ret = ols_set_samplerate(sdi, *(const uint64_t *)value,
-					 &samplerates);
+	switch (id) {
+	case SR_CONF_SAMPLERATE:
+		tmp_u64 = g_variant_get_uint64(data);
+		if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
+			return SR_ERR_SAMPLERATE;
+		ret = ols_set_samplerate(sdi, g_variant_get_uint64(data));
 		break;
-	case SR_HWCAP_LIMIT_SAMPLES:
-		tmp_u64 = value;
-		if (*tmp_u64 < MIN_NUM_SAMPLES)
+	case SR_CONF_LIMIT_SAMPLES:
+		tmp_u64 = g_variant_get_uint64(data);
+		if (tmp_u64 < MIN_NUM_SAMPLES)
 			return SR_ERR;
-		if (*tmp_u64 > devc->max_samples)
-			sr_err("Sample limit exceeds hardware maximum.");
-		devc->limit_samples = *tmp_u64;
-		sr_info("Sample limit is %" PRIu64 ".", devc->limit_samples);
+		devc->limit_samples = tmp_u64;
 		ret = SR_OK;
 		break;
-	case SR_HWCAP_CAPTURE_RATIO:
-		devc->capture_ratio = *(const uint64_t *)value;
+	case SR_CONF_CAPTURE_RATIO:
+		devc->capture_ratio = g_variant_get_uint64(data);
 		if (devc->capture_ratio < 0 || devc->capture_ratio > 100) {
 			devc->capture_ratio = 0;
 			ret = SR_ERR;
 		} else
 			ret = SR_OK;
 		break;
-	case SR_HWCAP_RLE:
-		if (GPOINTER_TO_INT(value)) {
+	case SR_CONF_EXTERNAL_CLOCK:
+		if (g_variant_get_boolean(data)) {
+			sr_info("Enabling external clock.");
+			devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
+		} else {
+			sr_info("Disabled external clock.");
+			devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
+		}
+		ret = SR_OK;
+		break;
+	case SR_CONF_PATTERN_MODE:
+		stropt = g_variant_get_string(data, NULL);
+		ret = SR_OK;
+		if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
+			sr_info("Enabling internal test mode.");
+			devc->flag_reg |= FLAG_INTERNAL_TEST_MODE;
+		} else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
+			sr_info("Enabling external test mode.");
+			devc->flag_reg |= FLAG_EXTERNAL_TEST_MODE;
+		} else {
+			ret = SR_ERR;
+		}
+		break;
+	case SR_CONF_SWAP:
+		if (g_variant_get_boolean(data)) {
+			sr_info("Enabling channel swapping.");
+			devc->flag_reg |= FLAG_SWAP_PROBES;
+		} else {
+			sr_info("Disabling channel swapping.");
+			devc->flag_reg &= ~FLAG_SWAP_PROBES;
+		}
+		ret = SR_OK;
+		break;
+
+	case SR_CONF_RLE:
+		if (g_variant_get_boolean(data)) {
 			sr_info("Enabling RLE.");
 			devc->flag_reg |= FLAG_RLE;
+		} else {
+			sr_info("Disabling RLE.");
+			devc->flag_reg &= ~FLAG_RLE;
 		}
 		ret = SR_OK;
 		break;
 	default:
-		ret = SR_ERR;
+		ret = SR_ERR_NA;
 	}
 
 	return ret;
 }
 
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+		const struct sr_probe_group *probe_group)
+{
+	struct dev_context *devc;
+	GVariant *gvar, *grange[2];
+	GVariantBuilder gvb;
+	int num_channels, i;
+
+	(void)probe_group;
+
+	switch (key) {
+	case SR_CONF_SCAN_OPTIONS:
+		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+				hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
+		break;
+	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_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}", "samplerate-steps", gvar);
+		*data = g_variant_builder_end(&gvb);
+		break;
+	case SR_CONF_TRIGGER_TYPE:
+		*data = g_variant_new_string(TRIGGER_TYPE);
+		break;
+	case SR_CONF_PATTERN_MODE:
+		*data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
+		break;
+	case SR_CONF_LIMIT_SAMPLES:
+		if (!sdi)
+			return SR_ERR_ARG;
+		devc = sdi->priv;
+		if (devc->flag_reg & FLAG_RLE)
+			return SR_ERR_NA;
+		if (devc->max_samples == 0)
+			/* Device didn't specify sample memory size in metadata. */
+			return SR_ERR_NA;
+		/*
+		 * Channel groups are turned off if no probes in that group are
+		 * enabled, making more room for samples for the enabled group.
+		*/
+		ols_configure_probes(sdi);
+		num_channels = 0;
+		for (i = 0; i < 4; i++) {
+			if (devc->probe_mask & (0xff << (i * 8)))
+				num_channels++;
+		}
+		grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
+		grange[1] = g_variant_new_uint64(devc->max_samples / num_channels);
+		*data = g_variant_new_tuple(grange, 2);
+		break;
+	default:
+		return SR_ERR_NA;
+	}
+
+	return SR_OK;
+}
+
+static int dev_acquisition_start(const struct sr_dev_inst *sdi,
 		void *cb_data)
 {
-	struct sr_datafeed_packet *packet;
-	struct sr_datafeed_header *header;
-	struct sr_datafeed_meta_logic meta;
 	struct dev_context *devc;
+	struct sr_serial_dev_inst *serial;
 	uint32_t trigger_config[4];
 	uint32_t data;
 	uint16_t readcount, delaycount;
@@ -342,10 +414,11 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 	int num_channels;
 	int i;
 
-	devc = sdi->priv;
-
 	if (sdi->status != SR_ST_ACTIVE)
-		return SR_ERR;
+		return SR_ERR_DEV_CLOSED;
+
+	devc = sdi->priv;
+	serial = sdi->conn;
 
 	if (ols_configure_probes(sdi) != SR_OK) {
 		sr_err("Failed to configure probes.");
@@ -373,126 +446,103 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 	readcount = MIN(devc->max_samples / num_channels, devc->limit_samples) / 4;
 
 	memset(trigger_config, 0, 16);
-	trigger_config[devc->num_stages - 1] |= 0x08;
+	trigger_config[devc->num_stages] |= 0x08;
 	if (devc->trigger_mask[0]) {
 		delaycount = readcount * (1 - devc->capture_ratio / 100.0);
 		devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
 
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_MASK_0,
 			reverse32(devc->trigger_mask[0])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_VALUE_0,
 			reverse32(devc->trigger_value[0])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_CONFIG_0,
 			trigger_config[0]) != SR_OK)
 			return SR_ERR;
 
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_1,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_MASK_1,
 			reverse32(devc->trigger_mask[1])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_1,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_VALUE_1,
 			reverse32(devc->trigger_value[1])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_1,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_CONFIG_1,
 			trigger_config[1]) != SR_OK)
 			return SR_ERR;
 
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_2,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_MASK_2,
 			reverse32(devc->trigger_mask[2])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_2,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_VALUE_2,
 			reverse32(devc->trigger_value[2])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_2,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_CONFIG_2,
 			trigger_config[2]) != SR_OK)
 			return SR_ERR;
 
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_3,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_MASK_3,
 			reverse32(devc->trigger_mask[3])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_3,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_VALUE_3,
 			reverse32(devc->trigger_value[3])) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_3,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_CONFIG_3,
 			trigger_config[3]) != SR_OK)
 			return SR_ERR;
 	} else {
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_MASK_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_MASK_0,
 				devc->trigger_mask[0]) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_VALUE_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_VALUE_0,
 				devc->trigger_value[0]) != SR_OK)
 			return SR_ERR;
-		if (send_longcommand(devc->serial, CMD_SET_TRIGGER_CONFIG_0,
+		if (send_longcommand(serial, CMD_SET_TRIGGER_CONFIG_0,
 		     0x00000008) != SR_OK)
 			return SR_ERR;
 		delaycount = readcount;
 	}
 
 	sr_info("Setting samplerate to %" PRIu64 "Hz (divider %u, "
-		"demux %s)", devc->cur_samplerate, devc->cur_samplerate_divider,
-		devc->flag_reg & FLAG_DEMUX ? "on" : "off");
-	if (send_longcommand(devc->serial, CMD_SET_DIVIDER,
+		"demux %s, noise_filter %s)", devc->cur_samplerate,
+		devc->cur_samplerate_divider,
+		devc->flag_reg & FLAG_DEMUX ? "on" : "off",
+		devc->flag_reg & FLAG_FILTER ? "on": "off");
+	if (send_longcommand(serial, CMD_SET_DIVIDER,
 			reverse32(devc->cur_samplerate_divider)) != SR_OK)
 		return SR_ERR;
 
 	/* Send sample limit and pre/post-trigger capture ratio. */
 	data = ((readcount - 1) & 0xffff) << 16;
 	data |= (delaycount - 1) & 0xffff;
-	if (send_longcommand(devc->serial, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK)
+	if (send_longcommand(serial, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK)
 		return SR_ERR;
 
 	/* The flag register wants them here, and 1 means "disable channel". */
 	devc->flag_reg |= ~(changrp_mask << 2) & 0x3c;
-	devc->flag_reg |= FLAG_FILTER;
 	devc->rle_count = 0;
 	data = (devc->flag_reg << 24) | ((devc->flag_reg << 8) & 0xff0000);
-	if (send_longcommand(devc->serial, CMD_SET_FLAGS, data) != SR_OK)
+	if (send_longcommand(serial, CMD_SET_FLAGS, data) != SR_OK)
 		return SR_ERR;
 
 	/* Start acquisition on the device. */
-	if (send_shortcommand(devc->serial, CMD_RUN) != SR_OK)
+	if (send_shortcommand(serial, CMD_RUN) != SR_OK)
 		return SR_ERR;
 
-	sr_source_add(devc->serial->fd, G_IO_IN, -1, ols_receive_data,
-		      cb_data);
-
-	if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
-		sr_err("Datafeed packet malloc failed.");
-		return SR_ERR_MALLOC;
-	}
-
-	if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
-		sr_err("Datafeed header malloc failed.");
-		g_free(packet);
-		return SR_ERR_MALLOC;
-	}
+	/* Reset all operational states. */
+	devc->num_transfers = devc->num_samples = devc->num_bytes = 0;
+	memset(devc->sample, 0, 4);
 
 	/* Send header packet to the session bus. */
-	packet->type = SR_DF_HEADER;
-	packet->payload = (unsigned char *)header;
-	header->feed_version = 1;
-	gettimeofday(&header->starttime, NULL);
-	sr_session_send(cb_data, packet);
-
-	/* Send metadata about the SR_DF_LOGIC packets to come. */
-	packet->type = SR_DF_META_LOGIC;
-	packet->payload = &meta;
-	meta.samplerate = devc->cur_samplerate;
-	meta.num_probes = NUM_PROBES;
-	sr_session_send(cb_data, packet);
-
-	g_free(header);
-	g_free(packet);
+	std_session_send_df_header(cb_data, LOG_PREFIX);
+
+	serial_source_add(serial, G_IO_IN, -1, ols_receive_data, cb_data);
 
 	return SR_OK;
 }
 
-/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
-static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 {
-	/* Avoid compiler warnings. */
 	(void)cb_data;
 
 	abort_acquisition(sdi);
@@ -504,16 +554,17 @@ SR_PRIV struct sr_dev_driver ols_driver_info = {
 	.name = "ols",
 	.longname = "Openbench Logic Sniffer",
 	.api_version = 1,
-	.init = hw_init,
-	.cleanup = hw_cleanup,
-	.scan = hw_scan,
-	.dev_list = hw_dev_list,
-	.dev_clear = hw_cleanup,
-	.dev_open = hw_dev_open,
-	.dev_close = hw_dev_close,
-	.info_get = hw_info_get,
-	.dev_config_set = hw_dev_config_set,
-	.dev_acquisition_start = hw_dev_acquisition_start,
-	.dev_acquisition_stop = hw_dev_acquisition_stop,
+	.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 = std_serial_dev_open,
+	.dev_close = std_serial_dev_close,
+	.dev_acquisition_start = dev_acquisition_start,
+	.dev_acquisition_stop = dev_acquisition_stop,
 	.priv = NULL,
 };