thodg/cgminer

diff --git a/api.c b/api.c
index 3561c7a..2e013ff 100644
--- a/api.c
+++ b/api.c
@@ -599,22 +599,6 @@ struct APIGROUPS {
 static struct IP4ACCESS *ipaccess = NULL;
 static int ips = 0;
 
-#ifdef USE_BITFORCE
-extern struct device_api bitforce_api;
-#endif
-
-#ifdef USE_ICARUS
-extern struct device_api icarus_api;
-#endif
-
-#ifdef USE_ZTEX
-extern struct device_api ztex_api;
-#endif
-
-#ifdef USE_MODMINER
-extern struct device_api modminer_api;
-#endif
-
 struct io_data {
 	size_t siz;
 	char *ptr;
@@ -1153,19 +1137,19 @@ static int numpgas()
 
 	for (i = 0; i < total_devices; i++) {
 #ifdef USE_BITFORCE
-		if (devices[i]->api == &bitforce_api)
+		if (devices[i]->drv->drv == DRIVER_BITFORCE)
 			count++;
 #endif
 #ifdef USE_ICARUS
-		if (devices[i]->api == &icarus_api)
+		if (devices[i]->drv->drv == DRIVER_ICARUS)
 			count++;
 #endif
 #ifdef USE_ZTEX
-		if (devices[i]->api == &ztex_api)
+		if (devices[i]->drv->drv == DRIVER_ZTEX)
 			count++;
 #endif
 #ifdef USE_MODMINER
-		if (devices[i]->api == &modminer_api)
+		if (devices[i]->drv->drv == DRIVER_MODMINER)
 			count++;
 #endif
 	}
@@ -1179,19 +1163,19 @@ static int pgadevice(int pgaid)
 
 	for (i = 0; i < total_devices; i++) {
 #ifdef USE_BITFORCE
-		if (devices[i]->api == &bitforce_api)
+		if (devices[i]->drv->drv == DRIVER_BITFORCE)
 			count++;
 #endif
 #ifdef USE_ICARUS
-		if (devices[i]->api == &icarus_api)
+		if (devices[i]->drv->drv == DRIVER_ICARUS)
 			count++;
 #endif
 #ifdef USE_ZTEX
-		if (devices[i]->api == &ztex_api)
+		if (devices[i]->drv->drv == DRIVER_ZTEX)
 			count++;
 #endif
 #ifdef USE_MODMINER
-		if (devices[i]->api == &modminer_api)
+		if (devices[i]->drv->drv == DRIVER_MODMINER)
 			count++;
 #endif
 		if (count == (pgaid + 1))
@@ -1535,11 +1519,11 @@ static void pgastatus(struct io_data *io_data, int pga, bool isjson, bool precom
 		float temp = cgpu->temp;
 
 #ifdef USE_ZTEX
-		if (cgpu->api == &ztex_api && cgpu->device_ztex)
+		if (cgpu->drv->drv == DRIVER_ZTEX && cgpu->device_ztex)
 			frequency = cgpu->device_ztex->freqM1 * (cgpu->device_ztex->freqM + 1);
 #endif
 #ifdef USE_MODMINER
-		if (cgpu->api == &modminer_api)
+		if (cgpu->drv->drv == DRIVER_MODMINER)
 			frequency = cgpu->clock;
 #endif
 
@@ -1553,7 +1537,7 @@ static void pgastatus(struct io_data *io_data, int pga, bool isjson, bool precom
 		status = (char *)status2str(cgpu->status);
 
 		root = api_add_int(root, "PGA", &pga, false);
-		root = api_add_string(root, "Name", cgpu->api->name, false);
+		root = api_add_string(root, "Name", cgpu->drv->name, false);
 		root = api_add_int(root, "ID", &(cgpu->device_id), false);
 		root = api_add_string(root, "Enabled", enabled, false);
 		root = api_add_string(root, "Status", status, false);
@@ -1868,12 +1852,12 @@ static void pgaidentify(struct io_data *io_data, __maybe_unused SOCKETTYPE c, ch
 	}
 
 	struct cgpu_info *cgpu = devices[dev];
-	struct device_api *api = cgpu->api;
+	struct device_drv *drv = cgpu->drv;
 
-	if (!api->identify_device)
+	if (!drv->identify_device)
 		message(io_data, MSG_PGANOID, id, NULL, isjson);
 	else {
-		api->identify_device(cgpu);
+		drv->identify_device(cgpu);
 		message(io_data, MSG_PGAIDENT, id, NULL, isjson);
 	}
 }
@@ -2753,7 +2737,7 @@ void notifystatus(struct io_data *io_data, int device, struct cgpu_info *cgpu, b
 	// ALL counters (and only counters) must start the name with a '*'
 	// Simplifies future external support for identifying new counters
 	root = api_add_int(root, "NOTIFY", &device, false);
-	root = api_add_string(root, "Name", cgpu->api->name, false);
+	root = api_add_string(root, "Name", cgpu->drv->name, false);
 	root = api_add_int(root, "ID", &(cgpu->device_id), false);
 	root = api_add_time(root, "Last Well", &(cgpu->device_last_well), false);
 	root = api_add_time(root, "Last Not Well", &(cgpu->device_last_not_well), false);
@@ -2817,9 +2801,9 @@ static void devdetails(struct io_data *io_data, __maybe_unused SOCKETTYPE c, __m
 		cgpu = devices[i];
 
 		root = api_add_int(root, "DEVDETAILS", &i, false);
-		root = api_add_string(root, "Name", cgpu->api->name, false);
+		root = api_add_string(root, "Name", cgpu->drv->name, false);
 		root = api_add_int(root, "ID", &(cgpu->device_id), false);
-		root = api_add_string(root, "Driver", cgpu->api->dname, false);
+		root = api_add_string(root, "Driver", cgpu->drv->dname, false);
 		root = api_add_const(root, "Kernel", cgpu->kname ? : BLANK, false);
 		root = api_add_const(root, "Model", cgpu->name ? : BLANK, false);
 		root = api_add_const(root, "Device Path", cgpu->device_path ? : BLANK, false);
@@ -2923,13 +2907,13 @@ static void minerstats(struct io_data *io_data, __maybe_unused SOCKETTYPE c, __m
 	for (j = 0; j < total_devices; j++) {
 		struct cgpu_info *cgpu = devices[j];
 
-		if (cgpu && cgpu->api) {
-			if (cgpu->api->get_api_stats)
-				extra = cgpu->api->get_api_stats(cgpu);
+		if (cgpu && cgpu->drv) {
+			if (cgpu->drv->get_api_stats)
+				extra = cgpu->drv->get_api_stats(cgpu);
 			else
 				extra = NULL;
 
-			sprintf(id, "%s%d", cgpu->api->name, cgpu->device_id);
+			sprintf(id, "%s%d", cgpu->drv->name, cgpu->device_id);
 			i = itemstats(io_data, i, id, &(cgpu->cgminer_stats), NULL, extra, isjson);
 		}
 	}
@@ -3195,16 +3179,16 @@ static void pgaset(struct io_data *io_data, __maybe_unused SOCKETTYPE c, __maybe
 	}
 
 	struct cgpu_info *cgpu = devices[dev];
-	struct device_api *api = cgpu->api;
+	struct device_drv *drv = cgpu->drv;
 
 	char *set = strchr(opt, ',');
 	if (set)
 		*(set++) = '\0';
 
-	if (!api->set_device)
+	if (!drv->set_device)
 		message(io_data, MSG_PGANOSET, id, NULL, isjson);
 	else {
-		char *ret = api->set_device(cgpu, opt, set, buf);
+		char *ret = drv->set_device(cgpu, opt, set, buf);
 		if (ret) {
 			if (strcasecmp(opt, "help") == 0)
 				message(io_data, MSG_PGAHELP, id, ret, isjson);
diff --git a/cgminer.c b/cgminer.c
index 19ffcb9..adf7db4 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -385,7 +385,7 @@ static void sharelog(const char*disposition, const struct work*work)
 	data = bin2hex(work->data, sizeof(work->data));
 
 	// timestamp,disposition,target,pool,dev,thr,sharehash,sharedata
-	rv = snprintf(s, sizeof(s), "%lu,%s,%s,%s,%s%u,%u,%s,%s\n", t, disposition, target, pool->rpc_url, cgpu->api->name, cgpu->device_id, thr_id, hash, data);
+	rv = snprintf(s, sizeof(s), "%lu,%s,%s,%s,%s%u,%u,%s,%s\n", t, disposition, target, pool->rpc_url, cgpu->drv->name, cgpu->device_id, thr_id, hash, data);
 	free(target);
 	free(hash);
 	free(data);
@@ -1875,9 +1875,9 @@ static void get_statline(char *buf, struct cgpu_info *cgpu)
 	suffix_string(dh64, displayed_hashes, 4);
 	suffix_string(dr64, displayed_rolling, 4);
 
-	sprintf(buf, "%s%d ", cgpu->api->name, cgpu->device_id);
-	if (cgpu->api->get_statline_before)
-		cgpu->api->get_statline_before(buf, cgpu);
+	sprintf(buf, "%s%d ", cgpu->drv->name, cgpu->device_id);
+	if (cgpu->drv->get_statline_before)
+		cgpu->drv->get_statline_before(buf, cgpu);
 	else
 		tailsprintf(buf, "               | ");
 	tailsprintf(buf, "(%ds):%s (avg):%sh/s | A:%d R:%d HW:%d U:%.1f/m",
@@ -1888,8 +1888,8 @@ static void get_statline(char *buf, struct cgpu_info *cgpu)
 		cgpu->rejected,
 		cgpu->hw_errors,
 		cgpu->utility);
-	if (cgpu->api->get_statline)
-		cgpu->api->get_statline(buf, cgpu);
+	if (cgpu->drv->get_statline)
+		cgpu->drv->get_statline(buf, cgpu);
 }
 
 static void text_print_status(int thr_id)
@@ -1971,10 +1971,10 @@ static void curses_print_devstatus(int thr_id)
 	cgpu->utility = cgpu->accepted / total_secs * 60;
 
 	wmove(statuswin,devcursor + cgpu->cgminer_id, 0);
-	wprintw(statuswin, " %s %*d: ", cgpu->api->name, dev_width, cgpu->device_id);
-	if (cgpu->api->get_statline_before) {
+	wprintw(statuswin, " %s %*d: ", cgpu->drv->name, dev_width, cgpu->device_id);
+	if (cgpu->drv->get_statline_before) {
 		logline[0] = '\0';
-		cgpu->api->get_statline_before(logline, cgpu);
+		cgpu->drv->get_statline_before(logline, cgpu);
 		wprintw(statuswin, "%s", logline);
 	}
 	else
@@ -2007,9 +2007,9 @@ static void curses_print_devstatus(int thr_id)
 			hwwidth, cgpu->hw_errors,
 		uwidth + 3, cgpu->utility);
 
-	if (cgpu->api->get_statline) {
+	if (cgpu->drv->get_statline) {
 		logline[0] = '\0';
-		cgpu->api->get_statline(logline, cgpu);
+		cgpu->drv->get_statline(logline, cgpu);
 		wprintw(statuswin, "%s", logline);
 	}
 
@@ -2234,10 +2234,10 @@ share_result(json_t *val, json_t *res, json_t *err, const struct work *work,
 		if (!QUIET) {
 			if (total_pools > 1)
 				applog(LOG_NOTICE, "Accepted %s %s %d pool %d %s%s",
-				       hashshow, cgpu->api->name, cgpu->device_id, work->pool->pool_no, resubmit ? "(resubmit)" : "", worktime);
+				       hashshow, cgpu->drv->name, cgpu->device_id, work->pool->pool_no, resubmit ? "(resubmit)" : "", worktime);
 			else
 				applog(LOG_NOTICE, "Accepted %s %s %d %s%s",
-				       hashshow, cgpu->api->name, cgpu->device_id, resubmit ? "(resubmit)" : "", worktime);
+				       hashshow, cgpu->drv->name, cgpu->device_id, resubmit ? "(resubmit)" : "", worktime);
 		}
 		sharelog("accept", work);
 		if (opt_shares && total_accepted >= opt_shares) {
@@ -2302,7 +2302,7 @@ share_result(json_t *val, json_t *res, json_t *err, const struct work *work,
 			}
 
 			applog(LOG_NOTICE, "Rejected %s %s %d %s%s %s%s",
-			       hashshow, cgpu->api->name, cgpu->device_id, where, reason, resubmit ? "(resubmit)" : "", worktime);
+			       hashshow, cgpu->drv->name, cgpu->device_id, where, reason, resubmit ? "(resubmit)" : "", worktime);
 			sharelog(disposition, work);
 		}
 
@@ -5238,15 +5238,15 @@ static bool hashtest(struct thr_info *thr, struct work *work)
 
 	if (hash2_32[7] != 0) {
 		applog(LOG_WARNING, "%s%d: invalid nonce - HW error",
-				thr->cgpu->api->name, thr->cgpu->device_id);
+				thr->cgpu->drv->name, thr->cgpu->device_id);
 
 		mutex_lock(&stats_lock);
 		hw_errors++;
 		thr->cgpu->hw_errors++;
 		mutex_unlock(&stats_lock);
 
-		if (thr->cgpu->api->hw_error)
-			thr->cgpu->api->hw_error(thr);
+		if (thr->cgpu->drv->hw_error)
+			thr->cgpu->drv->hw_error(thr);
 
 		goto out;
 	}
@@ -5294,7 +5294,7 @@ static inline bool abandon_work(struct work *work, struct timeval *wdiff, uint64
 }
 
 static void mt_disable(struct thr_info *mythr, const int thr_id,
-		       struct device_api *api)
+		       struct device_drv *drv)
 {
 	applog(LOG_WARNING, "Thread %d being disabled", thr_id);
 	mythr->rolling = mythr->cgpu->rolling = 0;
@@ -5305,8 +5305,8 @@ static void mt_disable(struct thr_info *mythr, const int thr_id,
 	} while (mythr->pause);
 	thread_reportin(mythr);
 	applog(LOG_WARNING, "Thread %d being re-enabled", thr_id);
-	if (api->thread_enable)
-		api->thread_enable(mythr);
+	if (drv->thread_enable)
+		drv->thread_enable(mythr);
 }
 
 void *miner_thread(void *userdata)
@@ -5314,7 +5314,7 @@ void *miner_thread(void *userdata)
 	struct thr_info *mythr = userdata;
 	const int thr_id = mythr->id;
 	struct cgpu_info *cgpu = mythr->cgpu;
-	struct device_api *api = cgpu->api;
+	struct device_drv *drv = cgpu->drv;
 	struct cgminer_stats *dev_stats = &(cgpu->cgminer_stats);
 	struct cgminer_stats *pool_stats;
 	struct timeval getwork_start;
@@ -5323,7 +5323,7 @@ void *miner_thread(void *userdata)
 	const long cycle = opt_log_interval / 5 ? : 1;
 	struct timeval tv_start, tv_end, tv_workstart, tv_lastupdate;
 	struct timeval diff, sdiff, wdiff = {0, 0};
-	uint32_t max_nonce = api->can_limit_work ? api->can_limit_work(mythr) : 0xffffffff;
+	uint32_t max_nonce = drv->can_limit_work ? drv->can_limit_work(mythr) : 0xffffffff;
 	int64_t hashes_done = 0;
 	int64_t hashes;
 	struct work *work;
@@ -5337,7 +5337,7 @@ void *miner_thread(void *userdata)
 
 	gettimeofday(&getwork_start, NULL);
 
-	if (api->thread_init && !api->thread_init(mythr)) {
+	if (drv->thread_init && !drv->thread_init(mythr)) {
 		dev_error(cgpu, REASON_THREAD_FAIL_INIT);
 		goto out;
 	}
@@ -5357,7 +5357,7 @@ void *miner_thread(void *userdata)
 		gettimeofday(&tv_workstart, NULL);
 		work->blk.nonce = 0;
 		cgpu->max_hashes = 0;
-		if (api->prepare_work && !api->prepare_work(mythr, work)) {
+		if (drv->prepare_work && !drv->prepare_work(mythr, work)) {
 			applog(LOG_ERR, "work prepare failed, exiting "
 				"mining thread %d", thr_id);
 			break;
@@ -5399,16 +5399,16 @@ void *miner_thread(void *userdata)
 			gettimeofday(&(work->tv_work_start), NULL);
 
 			thread_reportin(mythr);
-			hashes = api->scanhash(mythr, work, work->blk.nonce + max_nonce);
+			hashes = drv->scanhash(mythr, work, work->blk.nonce + max_nonce);
 			thread_reportin(mythr);
 
 			gettimeofday(&getwork_start, NULL);
 
 			if (unlikely(hashes == -1)) {
-				applog(LOG_ERR, "%s %d failure, disabling!", api->name, cgpu->device_id);
+				applog(LOG_ERR, "%s %d failure, disabling!", drv->name, cgpu->device_id);
 				cgpu->deven = DEV_DISABLED;
 				dev_error(cgpu, REASON_THREAD_ZERO_HASH);
-				mt_disable(mythr, thr_id, api);
+				mt_disable(mythr, thr_id, drv);
 			}
 
 			hashes_done += hashes;
@@ -5429,7 +5429,7 @@ void *miner_thread(void *userdata)
 			if (unlikely((long)sdiff.tv_sec < cycle)) {
 				int mult;
 
-				if (likely(!api->can_limit_work || max_nonce == 0xffffffff))
+				if (likely(!drv->can_limit_work || max_nonce == 0xffffffff))
 					continue;
 
 				mult = 1000000 / ((sdiff.tv_usec + 0x400) / 0x400) + 0x10;
@@ -5438,9 +5438,9 @@ void *miner_thread(void *userdata)
 					max_nonce = 0xffffffff;
 				else
 					max_nonce = (max_nonce * mult) / 0x400;
-			} else if (unlikely(sdiff.tv_sec > cycle) && api->can_limit_work)
+			} else if (unlikely(sdiff.tv_sec > cycle) && drv->can_limit_work)
 				max_nonce = max_nonce * cycle / sdiff.tv_sec;
-			else if (unlikely(sdiff.tv_usec > 100000) && api->can_limit_work)
+			else if (unlikely(sdiff.tv_usec > 100000) && drv->can_limit_work)
 				max_nonce = max_nonce * 0x400 / (((cycle * 1000000) + sdiff.tv_usec) / (cycle * 1000000 / 0x400));
 
 			timersub(&tv_end, &tv_lastupdate, &diff);
@@ -5466,7 +5466,7 @@ void *miner_thread(void *userdata)
 			}
 
 			if (unlikely(mythr->pause || cgpu->deven != DEV_ENABLED))
-				mt_disable(mythr, thr_id, api);
+				mt_disable(mythr, thr_id, drv);
 
 			sdiff.tv_sec = sdiff.tv_usec = 0;
 		} while (!abandon_work(work, &wdiff, cgpu->max_hashes));
@@ -5474,8 +5474,8 @@ void *miner_thread(void *userdata)
 	}
 
 out:
-	if (api->thread_shutdown)
-		api->thread_shutdown(mythr);
+	if (drv->thread_shutdown)
+		drv->thread_shutdown(mythr);
 
 	thread_reportin(mythr);
 	applog(LOG_ERR, "Thread %d failure, exiting", thr_id);
@@ -5703,8 +5703,8 @@ out:
 
 void reinit_device(struct cgpu_info *cgpu)
 {
-	if (cgpu->api->reinit_device)
-		cgpu->api->reinit_device(cgpu);
+	if (cgpu->drv->reinit_device)
+		cgpu->drv->reinit_device(cgpu);
 }
 
 static struct timeval rotate_tv;
@@ -5879,12 +5879,12 @@ static void *watchdog_thread(void __maybe_unused *userdata)
 			char dev_str[8];
 			int gpu;
 
-			if (cgpu->api->get_stats)
-			  cgpu->api->get_stats(cgpu);
+			if (cgpu->drv->get_stats)
+			  cgpu->drv->get_stats(cgpu);
 
 			gpu = cgpu->device_id;
 			denable = &cgpu->deven;
-			sprintf(dev_str, "%s%d", cgpu->api->name, gpu);
+			sprintf(dev_str, "%s%d", cgpu->drv->name, gpu);
 
 #ifdef HAVE_ADL
 			if (adl_active && cgpu->has_adl)
@@ -5904,7 +5904,7 @@ static void *watchdog_thread(void __maybe_unused *userdata)
 				continue;
 
 #ifdef WANT_CPUMINE
-			if (!strcmp(cgpu->api->dname, "cpu"))
+			if (cgpu->drv->drv != DRIVER_CPU)
 				continue;
 #endif
 			if (cgpu->status != LIFE_WELL && (now.tv_sec - thr->last.tv_sec < WATCHDOG_SICK_TIME)) {
@@ -6294,26 +6294,27 @@ void enable_curses(void) {
 
 /* TODO: fix need a dummy CPU device_api even if no support for CPU mining */
 #ifndef WANT_CPUMINE
-struct device_api cpu_api;
-struct device_api cpu_api = {
+struct device_drv cpu_drv;
+struct device_drv cpu_drv = {
+	.drv = DRIVER_CPU,
 	.name = "CPU",
 };
 #endif
 
 #ifdef USE_BITFORCE
-extern struct device_api bitforce_api;
+extern struct device_drv bitforce_drv;
 #endif
 
 #ifdef USE_ICARUS
-extern struct device_api icarus_api;
+extern struct device_drv icarus_drv;
 #endif
 
 #ifdef USE_MODMINER
-extern struct device_api modminer_api;
+extern struct device_drv modminer_drv;
 #endif
 
 #ifdef USE_ZTEX
-extern struct device_api ztex_api;
+extern struct device_drv ztex_drv;
 #endif
 
 
@@ -6328,7 +6329,7 @@ void enable_device(struct cgpu_info *cgpu)
 	adj_width(mining_threads, &dev_width);
 #endif
 #ifdef HAVE_OPENCL
-	if (cgpu->api == &opencl_api) {
+	if (cgpu->drv->drv == DRIVER_OPENCL) {
 		gpu_threads += cgpu->threads;
 	}
 #endif
@@ -6345,12 +6346,12 @@ bool add_cgpu(struct cgpu_info*cgpu)
 	static struct _cgpu_devid_counter *devids = NULL;
 	struct _cgpu_devid_counter *d;
 	
-	HASH_FIND_STR(devids, cgpu->api->name, d);
+	HASH_FIND_STR(devids, cgpu->drv->name, d);
 	if (d)
 		cgpu->device_id = ++d->lastid;
 	else {
 		d = malloc(sizeof(*d));
-		memcpy(d->name, cgpu->api->name, sizeof(d->name));
+		memcpy(d->name, cgpu->drv->name, sizeof(d->name));
 		cgpu->device_id = d->lastid = 0;
 		HASH_ADD_STR(devids, name, d);
 	}
@@ -6568,32 +6569,32 @@ int main(int argc, char *argv[])
 
 #ifdef HAVE_OPENCL
 	if (!opt_nogpu)
-		opencl_api.api_detect();
+		opencl_drv.drv_detect();
 	gpu_threads = 0;
 #endif
 
 #ifdef USE_ICARUS
 	if (!opt_scrypt)
-		icarus_api.api_detect();
+		icarus_drv.drv_detect();
 #endif
 
 #ifdef USE_BITFORCE
 	if (!opt_scrypt)
-		bitforce_api.api_detect();
+		bitforce_drv.drv_detect();
 #endif
 
 #ifdef USE_MODMINER
 	if (!opt_scrypt)
-		modminer_api.api_detect();
+		modminer_drv.drv_detect();
 #endif
 
 #ifdef USE_ZTEX
 	if (!opt_scrypt)
-		ztex_api.api_detect();
+		ztex_drv.drv_detect();
 #endif
 
 #ifdef WANT_CPUMINE
-	cpu_api.api_detect();
+	cpu_drv.drv_detect();
 #endif
 
 	if (devices_enabled == -1) {
@@ -6601,9 +6602,9 @@ int main(int argc, char *argv[])
 		for (i = 0; i < total_devices; ++i) {
 			struct cgpu_info *cgpu = devices[i];
 			if (cgpu->name)
-				applog(LOG_ERR, " %2d. %s %d: %s (driver: %s)", i, cgpu->api->name, cgpu->device_id, cgpu->name, cgpu->api->dname);
+				applog(LOG_ERR, " %2d. %s %d: %s (driver: %s)", i, cgpu->drv->name, cgpu->device_id, cgpu->name, cgpu->drv->dname);
 			else
-				applog(LOG_ERR, " %2d. %s %d (driver: %s)", i, cgpu->api->name, cgpu->device_id, cgpu->api->dname);
+				applog(LOG_ERR, " %2d. %s %d (driver: %s)", i, cgpu->drv->name, cgpu->device_id, cgpu->drv->dname);
 		}
 		quit(0, "%d devices listed", total_devices);
 	}
@@ -6617,7 +6618,7 @@ int main(int argc, char *argv[])
 				enable_device(devices[i]);
 			} else if (i < total_devices) {
 				if (opt_removedisabled) {
-					if (devices[i]->api == &cpu_api)
+					if (devices[i]->drv->drv == DRIVER_CPU)
 						--opt_n_threads;
 				} else {
 					enable_device(devices[i]);
@@ -6789,7 +6790,7 @@ begin_bench:
 
 			thr->q = tq_new();
 			if (!thr->q)
-				quit(1, "tq_new failed in starting %s%d mining thread (#%d)", cgpu->api->name, cgpu->device_id, i);
+				quit(1, "tq_new failed in starting %s%d mining thread (#%d)", cgpu->drv->name, cgpu->device_id, i);
 
 			/* Enable threads for devices set not to mine but disable
 			 * their queue in case we wish to enable them later */
@@ -6799,7 +6800,7 @@ begin_bench:
 				tq_push(thr->q, &ping);
 			}
 
-			if (cgpu->api->thread_prepare && !cgpu->api->thread_prepare(thr))
+			if (cgpu->drv->thread_prepare && !cgpu->drv->thread_prepare(thr))
 				continue;
 
 			thread_reportout(thr);
diff --git a/driver-bitforce.c b/driver-bitforce.c
index 4a06b59..f119632 100644
--- a/driver-bitforce.c
+++ b/driver-bitforce.c
@@ -64,7 +64,7 @@
 
 static const char *blank = "";
 
-struct device_api bitforce_api;
+struct device_drv bitforce_drv;
 
 static void bitforce_initialise(struct cgpu_info *bitforce, bool lock)
 {
@@ -78,14 +78,14 @@ static void bitforce_initialise(struct cgpu_info *bitforce, bool lock)
 				FTDI_VALUE_RESET, bitforce->usbdev->found->interface, C_RESET);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: reset got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Set data control
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_DATA,
 				FTDI_VALUE_DATA, bitforce->usbdev->found->interface, C_SETDATA);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: setdata got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Set the baud
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_BAUD, FTDI_VALUE_BAUD,
@@ -93,35 +93,35 @@ static void bitforce_initialise(struct cgpu_info *bitforce, bool lock)
 				C_SETBAUD);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: setbaud got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Set Flow Control
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_FLOW,
 				FTDI_VALUE_FLOW, bitforce->usbdev->found->interface, C_SETFLOW);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: setflowctrl got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Set Modem Control
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_MODEM,
 				FTDI_VALUE_MODEM, bitforce->usbdev->found->interface, C_SETMODEM);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: setmodemctrl got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Clear any sent data
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_RESET,
 				FTDI_VALUE_PURGE_TX, bitforce->usbdev->found->interface, C_PURGETX);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: purgetx got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	// Clear any received data
 	err = usb_transfer(bitforce, FTDI_TYPE_OUT, FTDI_REQUEST_RESET,
 				FTDI_VALUE_PURGE_RX, bitforce->usbdev->found->interface, C_PURGERX);
 	if (opt_debug)
 		applog(LOG_DEBUG, "%s%i: purgerx got err %d",
-			bitforce->api->name, bitforce->device_id, err);
+			bitforce->drv->name, bitforce->device_id, err);
 
 	if (lock)
 		mutex_unlock(&bitforce->device_mutex);
@@ -136,13 +136,13 @@ static bool bitforce_detect_one(struct libusb_device *dev, struct usb_find_devic
 
 	struct cgpu_info *bitforce = NULL;
 	bitforce = calloc(1, sizeof(*bitforce));
-	bitforce->api = &bitforce_api;
+	bitforce->drv = &bitforce_drv;
 	bitforce->deven = DEV_ENABLED;
 	bitforce->threads = 1;
 
 	if (!usb_init(bitforce, dev, found)) {
 		applog(LOG_ERR, "%s detect (%d:%d) failed to initialise (incorrect device?)",
-			bitforce->api->dname,
+			bitforce->drv->dname,
 			(int)libusb_get_bus_number(dev),
 			(int)libusb_get_device_address(dev));
 		goto shin;
@@ -159,7 +159,7 @@ reinit:
 
 	if ((err = usb_write(bitforce, BITFORCE_IDENTIFY, BITFORCE_IDENTIFY_LEN, &amount, C_REQUESTIDENTIFY)) < 0 || amount != BITFORCE_IDENTIFY_LEN) {
 		applog(LOG_ERR, "%s detect (%s) send identify request failed (%d:%d)",
-			bitforce->api->dname, devpath, amount, err);
+			bitforce->drv->dname, devpath, amount, err);
 		goto unshin;
 	}
 
@@ -168,7 +168,7 @@ reinit:
 		if (++init_count <= REINIT_COUNT) {
 			if (init_count < 2) {
 				applog(LOG_WARNING, "%s detect (%s) 1st init failed - retrying (%d:%d)",
-					bitforce->api->dname, devpath, amount, err);
+					bitforce->drv->dname, devpath, amount, err);
 			}
 			nmsleep(REINIT_TIME_MS);
 			goto reinit;
@@ -176,14 +176,14 @@ reinit:
 
 		if (init_count > 0)
 			applog(LOG_WARNING, "%s detect (%s) init failed %d times",
-				bitforce->api->dname, devpath, init_count);
+				bitforce->drv->dname, devpath, init_count);
 
 		if (err < 0) {
 			applog(LOG_ERR, "%s detect (%s) error identify reply (%d:%d)",
-				bitforce->api->dname, devpath, amount, err);
+				bitforce->drv->dname, devpath, amount, err);
 		} else {
 			applog(LOG_ERR, "%s detect (%s) empty identify reply (%d)",
-				bitforce->api->dname, devpath, amount);
+				bitforce->drv->dname, devpath, amount);
 		}
 
 		goto unshin;
@@ -192,7 +192,7 @@ reinit:
 
 	if (unlikely(!strstr(buf, "SHA256"))) {
 		applog(LOG_ERR, "%s detect (%s) didn't recognise '%s'",
-			bitforce->api->dname, devpath, buf);
+			bitforce->drv->dname, devpath, buf);
 		goto unshin;
 	}
 
@@ -205,7 +205,7 @@ reinit:
 
 	// We have a real BitForce!
 	applog(LOG_DEBUG, "%s (%s) identified as: '%s'",
-		bitforce->api->dname, devpath, bitforce->name);
+		bitforce->drv->dname, devpath, bitforce->name);
 
 	/* Initially enable support for nonce range and disable it later if it
 	 * fails */
@@ -247,7 +247,7 @@ shin:
 
 static void bitforce_detect(void)
 {
-	usb_detect(&bitforce_api, bitforce_detect_one);
+	usb_detect(&bitforce_drv, bitforce_detect_one);
 }
 
 static void get_bitforce_statline_before(char *buf, struct cgpu_info *bitforce)
@@ -288,7 +288,7 @@ static void bitforce_flash_led(struct cgpu_info *bitforce)
 
 	if ((err = usb_write(bitforce, BITFORCE_FLASH, BITFORCE_FLASH_LEN, &amount, C_REQUESTFLASH)) < 0 || amount != BITFORCE_FLASH_LEN) {
 		applog(LOG_ERR, "%s%i: flash request failed (%d:%d)",
-			bitforce->api->name, bitforce->device_id, amount, err);
+			bitforce->drv->name, bitforce->device_id, amount, err);
 	} else {
 		/* However, this stops anything else getting a reply
 		 * So best to delay any other access to the BFL */
@@ -328,7 +328,7 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 	if ((err = usb_write(bitforce, BITFORCE_TEMPERATURE, BITFORCE_TEMPERATURE_LEN, &amount, C_REQUESTTEMPERATURE)) < 0 || amount != BITFORCE_TEMPERATURE_LEN) {
 		mutex_unlock(&bitforce->device_mutex);
 		applog(LOG_ERR, "%s%i: Error: Request temp invalid/timed out (%d:%d)",
-				bitforce->api->name, bitforce->device_id, amount, err);
+				bitforce->drv->name, bitforce->device_id, amount, err);
 		bitforce->hw_errors++;
 		return false;
 	}
@@ -337,10 +337,10 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 		mutex_unlock(&bitforce->device_mutex);
 		if (err < 0) {
 			applog(LOG_ERR, "%s%i: Error: Get temp return invalid/timed out (%d:%d)",
-					bitforce->api->name, bitforce->device_id, amount, err);
+					bitforce->drv->name, bitforce->device_id, amount, err);
 		} else {
 			applog(LOG_ERR, "%s%i: Error: Get temp returned nothing (%d:%d)",
-					bitforce->api->name, bitforce->device_id, amount, err);
+					bitforce->drv->name, bitforce->device_id, amount, err);
 		}
 		bitforce->hw_errors++;
 		return false;
@@ -360,7 +360,7 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 			bitforce->temp = temp;
 			if (unlikely(bitforce->cutofftemp > 0 && temp > bitforce->cutofftemp)) {
 				applog(LOG_WARNING, "%s%i: Hit thermal cutoff limit, disabling!",
-							bitforce->api->name, bitforce->device_id);
+							bitforce->drv->name, bitforce->device_id);
 				bitforce->deven = DEV_RECOVER;
 				dev_error(bitforce, REASON_DEV_THERMAL_CUTOFF);
 			}
@@ -370,7 +370,7 @@ static bool bitforce_get_temp(struct cgpu_info *bitforce)
 		 * our responses are out of sync and flush the buffer to
 		 * hopefully recover */
 		applog(LOG_WARNING, "%s%i: Garbled response probably throttling, clearing buffer",
-					bitforce->api->name, bitforce->device_id);
+					bitforce->drv->name, bitforce->device_id);
 		dev_error(bitforce, REASON_DEV_THROTTLE);
 		/* Count throttling episodes as hardware errors */
 		bitforce->hw_errors++;
@@ -404,14 +404,14 @@ re_send:
 	if ((err = usb_write(bitforce, cmd, len, &amount, C_REQUESTSENDWORK)) < 0 || amount != len) {
 		mutex_unlock(&bitforce->device_mutex);
 		applog(LOG_ERR, "%s%i: request send work failed (%d:%d)",
-				bitforce->api->name, bitforce->device_id, amount, err);
+				bitforce->drv->name, bitforce->device_id, amount, err);
 		return false;
 	}
 
 	if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_REQUESTSENDWORKSTATUS)) < 0) {
 		mutex_unlock(&bitforce->device_mutex);
 		applog(LOG_ERR, "%s%d: read request send work status failed (%d:%d)",
-				bitforce->api->name, bitforce->device_id, amount, err);
+				bitforce->drv->name, bitforce->device_id, amount, err);
 		return false;
 	}
 
@@ -423,14 +423,14 @@ re_send:
 		mutex_unlock(&bitforce->device_mutex);
 		if (bitforce->nonce_range) {
 			applog(LOG_WARNING, "%s%i: Does not support nonce range, disabling",
-						bitforce->api->name, bitforce->device_id);
+						bitforce->drv->name, bitforce->device_id);
 			bitforce->nonce_range = false;
 			bitforce->sleep_ms *= 5;
 			bitforce->kname = KNAME_WORK;
 			goto re_send;
 		}
 		applog(LOG_ERR, "%s%i: Error: Send work reports: %s",
-				bitforce->api->name, bitforce->device_id, buf);
+				bitforce->drv->name, bitforce->device_id, buf);
 		return false;
 	}
 
@@ -458,14 +458,14 @@ re_send:
 	if ((err = usb_write(bitforce, (char *)ob, len, &amount, C_SENDWORK)) < 0 || amount != len) {
 		mutex_unlock(&bitforce->device_mutex);
 		applog(LOG_ERR, "%s%i: send work failed (%d:%d)",
-				bitforce->api->name, bitforce->device_id, amount, err);
+				bitforce->drv->name, bitforce->device_id, amount, err);
 		return false;
 	}
 
 	if ((err = usb_ftdi_read_nl(bitforce, buf, sizeof(buf)-1, &amount, C_SENDWORKSTATUS)) < 0) {
 		mutex_unlock(&bitforce->device_mutex);
 		applog(LOG_ERR, "%s%d: read send work status failed (%d:%d)",
-				bitforce->api->name, bitforce->device_id, amount, err);
+				bitforce->drv->name, bitforce->device_id, amount, err);
 		return false;
 	}
 
@@ -474,19 +474,19 @@ re_send:
 	if (opt_debug) {
 		s = bin2hex(ob + 8, 44);
 		applog(LOG_DEBUG, "%s%i: block data: %s",
-				bitforce->api->name, bitforce->device_id, s);
+				bitforce->drv->name, bitforce->device_id, s);
 		free(s);
 	}
 
 	if (amount == 0 || !buf[0]) {
 		applog(LOG_ERR, "%s%i: Error: Send block data returned empty string/timed out",
-				bitforce->api->name, bitforce->device_id);
+				bitforce->drv->name, bitforce->device_id);
 		return false;
 	}
 
 	if (unlikely(strncasecmp(buf, "OK", 2))) {
 		applog(LOG_ERR, "%s%i: Error: Send block data reports: %s",
-				bitforce->api->name, bitforce->device_id, buf);
+				bitforce->drv->name, bitforce->device_id, buf);
 		return false;
 	}
 
@@ -519,7 +519,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 
 		if (elapsed.tv_sec >= BITFORCE_LONG_TIMEOUT_S) {
 			applog(LOG_ERR, "%s%i: took %dms - longer than %dms",
-				bitforce->api->name, bitforce->device_id,
+				bitforce->drv->name, bitforce->device_id,
 				tv_to_ms(elapsed), BITFORCE_LONG_TIMEOUT_MS);
 			return 0;
 		}
@@ -535,7 +535,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 
 	if (elapsed.tv_sec > BITFORCE_TIMEOUT_S) {
 		applog(LOG_ERR, "%s%i: took %dms - longer than %dms",
-			bitforce->api->name, bitforce->device_id,
+			bitforce->drv->name, bitforce->device_id,
 			tv_to_ms(elapsed), BITFORCE_TIMEOUT_MS);
 		dev_error(bitforce, REASON_DEV_OVER_HEAT);
 
@@ -560,7 +560,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 
 		if (delay_time_ms != bitforce->sleep_ms)
 			  applog(LOG_DEBUG, "%s%i: Wait time changed to: %d, waited %u",
-					bitforce->api->name, bitforce->device_id,
+					bitforce->drv->name, bitforce->device_id,
 					bitforce->sleep_ms, bitforce->wait_ms);
 
 		/* Work out the average time taken. Float for calculation, uint for display */
@@ -569,7 +569,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 	}
 
 	applog(LOG_DEBUG, "%s%i: waited %dms until %s",
-			bitforce->api->name, bitforce->device_id,
+			bitforce->drv->name, bitforce->device_id,
 			bitforce->wait_ms, buf);
 	if (!strncasecmp(&buf[2], "-", 1))
 		return bitforce->nonces;   /* No valid nonce found */
@@ -578,7 +578,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 	else if (strncasecmp(buf, "NONCE-FOUND", 11)) {
 		bitforce->hw_errors++;
 		applog(LOG_WARNING, "%s%i: Error: Get result reports: %s",
-			bitforce->api->name, bitforce->device_id, buf);
+			bitforce->drv->name, bitforce->device_id, buf);
 		bitforce_initialise(bitforce, true);
 		return 0;
 	}
@@ -593,7 +593,7 @@ static int64_t bitforce_get_result(struct thr_info *thr, struct work *work)
 		if (unlikely(bitforce->nonce_range && (nonce >= work->blk.nonce ||
 			(work->blk.nonce > 0 && nonce < work->blk.nonce - bitforce->nonces - 1)))) {
 				applog(LOG_WARNING, "%s%i: Disabling broken nonce range support",
-					bitforce->api->name, bitforce->device_id);
+					bitforce->drv->name, bitforce->device_id);
 				bitforce->nonce_range = false;
 				work->blk.nonce = 0xffffffff;
 				bitforce->sleep_ms *= 5;
@@ -643,7 +643,7 @@ static int64_t bitforce_scanhash(struct thr_info *thr, struct work *work, int64_
 
 	if (ret == -1) {
 		ret = 0;
-		applog(LOG_ERR, "%s%i: Comms error", bitforce->api->name, bitforce->device_id);
+		applog(LOG_ERR, "%s%i: Comms error", bitforce->drv->name, bitforce->device_id);
 		dev_error(bitforce, REASON_DEV_COMMS_ERROR);
 		bitforce->hw_errors++;
 		/* empty read buffer */
@@ -671,7 +671,7 @@ static bool bitforce_thread_init(struct thr_info *thr)
 	 * so the devices aren't making calls all at the same time. */
 	wait = thr->id * MAX_START_DELAY_MS;
 	applog(LOG_DEBUG, "%s%d: Delaying start by %dms",
-			bitforce->api->name, bitforce->device_id, wait / 1000);
+			bitforce->drv->name, bitforce->device_id, wait / 1000);
 	nmsleep(wait);
 
 	return true;
@@ -691,10 +691,11 @@ static struct api_data *bitforce_api_stats(struct cgpu_info *cgpu)
 	return root;
 }
 
-struct device_api bitforce_api = {
+struct device_drv bitforce_drv = {
+	.drv = DRIVER_BITFORCE,
 	.dname = "bitforce",
 	.name = "BFL",
-	.api_detect = bitforce_detect,
+	.drv_detect = bitforce_detect,
 	.get_api_stats = bitforce_api_stats,
 	.get_statline_before = get_bitforce_statline_before,
 	.get_stats = bitforce_get_stats,
diff --git a/driver-cpu.c b/driver-cpu.c
index 75d9a5a..99c5a3f 100644
--- a/driver-cpu.c
+++ b/driver-cpu.c
@@ -758,7 +758,7 @@ static void cpu_detect()
 		struct cgpu_info *cgpu;
 
 		cgpu = &cpus[i];
-		cgpu->api = &cpu_api;
+		cgpu->drv = &cpu_drv;
 		cgpu->deven = DEV_ENABLED;
 		cgpu->threads = 1;
 		cgpu->kname = algo_names[opt_algo];
@@ -843,10 +843,10 @@ CPUSearch:
 	return last_nonce - first_nonce + 1;
 }
 
-struct device_api cpu_api = {
+struct device_drv cpu_drv = {
 	.dname = "cpu",
 	.name = "CPU",
-	.api_detect = cpu_detect,
+	.drv_detect = cpu_detect,
 	.reinit_device = reinit_cpu_device,
 	.thread_prepare = cpu_thread_prepare,
 	.can_limit_work = cpu_can_limit_work,
diff --git a/driver-cpu.h b/driver-cpu.h
index e4b4452..361ae5d 100644
--- a/driver-cpu.h
+++ b/driver-cpu.h
@@ -53,7 +53,7 @@ enum sha256_algos {
 
 extern const char *algo_names[];
 extern bool opt_usecpu;
-extern struct device_api cpu_api;
+extern struct device_drv cpu_drv;
 
 extern char *set_algo(const char *arg, enum sha256_algos *algo);
 extern void show_algo(char buf[OPT_SHOW_LEN], const enum sha256_algos *algo);
diff --git a/driver-icarus.c b/driver-icarus.c
index c979a68..f42e721 100644
--- a/driver-icarus.c
+++ b/driver-icarus.c
@@ -208,7 +208,7 @@ static struct ICARUS_INFO **icarus_info;
 //
 static int option_offset = -1;
 
-struct device_api icarus_api;
+struct device_drv icarus_drv;
 
 static void rev(unsigned char *s, size_t l)
 {
@@ -571,7 +571,7 @@ static bool icarus_detect_one(const char *devpath)
 	/* We have a real Icarus! */
 	struct cgpu_info *icarus;
 	icarus = calloc(1, sizeof(struct cgpu_info));
-	icarus->api = &icarus_api;
+	icarus->drv = &icarus_drv;
 	icarus->device_path = strdup(devpath);
 	icarus->device_fd = -1;
 	icarus->threads = 1;
@@ -609,7 +609,7 @@ static bool icarus_detect_one(const char *devpath)
 
 static void icarus_detect()
 {
-	serial_detect(&icarus_api, icarus_detect_one);
+	serial_detect(&icarus_drv, icarus_detect_one);
 }
 
 static bool icarus_prepare(struct thr_info *thr)
@@ -900,10 +900,11 @@ static void icarus_shutdown(struct thr_info *thr)
 	do_icarus_close(thr);
 }
 
-struct device_api icarus_api = {
+struct device_drv icarus_drv = {
+	.drv = DRIVER_ICARUS,
 	.dname = "icarus",
 	.name = "ICA",
-	.api_detect = icarus_detect,
+	.drv_detect = icarus_detect,
 	.get_api_stats = icarus_api_stats,
 	.thread_prepare = icarus_prepare,
 	.scanhash = icarus_scanhash,
diff --git a/driver-modminer.c b/driver-modminer.c
index c48a51b..0868e85 100644
--- a/driver-modminer.c
+++ b/driver-modminer.c
@@ -87,7 +87,7 @@
 // Limit when reducing shares_to_good
 #define MODMINER_MIN_BACK 12
 
-struct device_api modminer_api;
+struct device_drv modminer_drv;
 
 // 45 noops sent when detecting, in case the device was left in "start job" reading
 static const char NOOP[] = MODMINER_PING "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
@@ -100,15 +100,15 @@ static void do_ping(struct cgpu_info *modminer)
 	// Don't care if it fails
 	err = usb_write(modminer, (char *)NOOP, sizeof(NOOP)-1, &amount, C_PING);
 	applog(LOG_DEBUG, "%s%u: flush noop got %d err %d",
-		modminer->api->name, modminer->fpgaid, amount, err);
+		modminer->drv->name, modminer->fpgaid, amount, err);
 
 	// Clear any outstanding data
 	while ((err = usb_read(modminer, buf, sizeof(buf)-1, &amount, C_CLEAR)) == 0 && amount > 0)
 		applog(LOG_DEBUG, "%s%u: clear got %d",
-			modminer->api->name, modminer->fpgaid, amount);
+			modminer->drv->name, modminer->fpgaid, amount);
 
 	applog(LOG_DEBUG, "%s%u: final clear got %d err %d",
-		modminer->api->name, modminer->fpgaid, amount, err);
+		modminer->drv->name, modminer->fpgaid, amount, err);
 }
 
 static bool modminer_detect_one(struct libusb_device *dev, struct usb_find_devices *found)
@@ -121,7 +121,7 @@ static bool modminer_detect_one(struct libusb_device *dev, struct usb_find_devic
 
 	struct cgpu_info *modminer = NULL;
 	modminer = calloc(1, sizeof(*modminer));
-	modminer->api = &modminer_api;
+	modminer->drv = &modminer_drv;
 	modminer->modminer_mutex = calloc(1, sizeof(*(modminer->modminer_mutex)));
 	mutex_init(modminer->modminer_mutex);
 	modminer->fpgaid = (char)0;
@@ -182,7 +182,7 @@ static bool modminer_detect_one(struct libusb_device *dev, struct usb_find_devic
 	for (i = 0; i < buf[0]; i++) {
 		struct cgpu_info *tmp = calloc(1, sizeof(*tmp));
 
-		tmp->api = modminer->api;
+		tmp->drv = modminer->drv;
 		tmp->name = devname;
 
 		sprintf(devpath, "%d:%d:%d",
@@ -233,7 +233,7 @@ shin:
 
 static void modminer_detect()
 {
-	usb_detect(&modminer_api, modminer_detect_one);
+	usb_detect(&modminer_drv, modminer_detect_one);
 }
 
 static bool get_expect(struct cgpu_info *modminer, FILE *f, char c)
@@ -242,13 +242,13 @@ static bool get_expect(struct cgpu_info *modminer, FILE *f, char c)
 
 	if (fread(&buf, 1, 1, f) != 1) {
 		applog(LOG_ERR, "%s%u: Error (%d) reading bitstream (%c)",
-				modminer->api->name, modminer->device_id, errno, c);
+				modminer->drv->name, modminer->device_id, errno, c);
 		return false;
 	}
 
 	if (buf != c) {
 		applog(LOG_ERR, "%s%u: firmware code mismatch (%c)",
-				modminer->api->name, modminer->device_id, c);
+				modminer->drv->name, modminer->device_id, c);
 		return false;
 	}
 
@@ -262,7 +262,7 @@ static bool get_info(struct cgpu_info *modminer, FILE *f, char *buf, int bufsiz,
 
 	if (fread(siz, 2, 1, f) != 1) {
 		applog(LOG_ERR, "%s%u: Error (%d) reading bitstream '%s' len",
-			modminer->api->name, modminer->device_id, errno, name);
+			modminer->drv->name, modminer->device_id, errno, name);
 		return false;
 	}
 
@@ -270,13 +270,13 @@ static bool get_info(struct cgpu_info *modminer, FILE *f, char *buf, int bufsiz,
 
 	if (len >= bufsiz) {
 		applog(LOG_ERR, "%s%u: Bitstream '%s' len too large (%d)",
-			modminer->api->name, modminer->device_id, name, len);
+			modminer->drv->name, modminer->device_id, name, len);
 		return false;
 	}
 
 	if (fread(buf, len, 1, f) != 1) {
 		applog(LOG_ERR, "%s%u: Error (%d) reading bitstream '%s'", errno,
-			modminer->api->name, modminer->device_id, errno, name);
+			modminer->drv->name, modminer->device_id, errno, name);
 		return false;
 	}
 
@@ -302,7 +302,7 @@ static bool get_status_timeout(struct cgpu_info *modminer, char *msg, unsigned i
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error (%d:%d) getting %s reply",
-			modminer->api->name, modminer->device_id, amount, err, msg);
+			modminer->drv->name, modminer->device_id, amount, err, msg);
 
 		return false;
 	}
@@ -311,7 +311,7 @@ static bool get_status_timeout(struct cgpu_info *modminer, char *msg, unsigned i
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error, invalid %s reply (was %d should be 1)",
-			modminer->api->name, modminer->device_id, msg, buf[0]);
+			modminer->drv->name, modminer->device_id, msg, buf[0]);
 
 		return false;
 	}
@@ -343,7 +343,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error (%d) opening bitstream file %s",
-			modminer->api->name, modminer->device_id, errno, bsfile);
+			modminer->drv->name, modminer->device_id, errno, bsfile);
 
 		return false;
 	}
@@ -352,7 +352,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error (%d) reading bitstream magic",
-			modminer->api->name, modminer->device_id, errno);
+			modminer->drv->name, modminer->device_id, errno);
 
 		goto dame;
 	}
@@ -361,7 +361,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: bitstream has incorrect magic (%u,%u) instead of (%u,%u)",
-			modminer->api->name, modminer->device_id,
+			modminer->drv->name, modminer->device_id,
 			buf[0], buf[1],
 			BITSTREAM_MAGIC_0, BITSTREAM_MAGIC_1);
 
@@ -372,7 +372,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error (%d) bitstream seek failed",
-			modminer->api->name, modminer->device_id, errno);
+			modminer->drv->name, modminer->device_id, errno);
 
 		goto dame;
 	}
@@ -384,7 +384,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		goto undame;
 
 	applog(LOG_DEBUG, "%s%u: bitstream file '%s' info:",
-		modminer->api->name, modminer->device_id, bsfile);
+		modminer->drv->name, modminer->device_id, bsfile);
 
 	applog(LOG_DEBUG, " Design name: '%s'", buf);
 
@@ -399,7 +399,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Bad usercode in bitstream file",
-			modminer->api->name, modminer->device_id);
+			modminer->drv->name, modminer->device_id);
 
 		goto dame;
 	}
@@ -408,7 +408,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: bitstream doesn't support user code",
-			modminer->api->name, modminer->device_id);
+			modminer->drv->name, modminer->device_id);
 
 		goto dame;
 	}
@@ -446,7 +446,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error (%d) reading bitstream data len",
-			modminer->api->name, modminer->device_id, errno);
+			modminer->drv->name, modminer->device_id, errno);
 
 		goto dame;
 	}
@@ -460,7 +460,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		*ptr = '\0';
 
 	applog(LOG_WARNING, "%s%u: Programming all FPGA on %s ... Mining will not start until complete",
-		modminer->api->name, modminer->device_id, devmsg);
+		modminer->drv->name, modminer->device_id, devmsg);
 
 	buf[0] = MODMINER_PROGRAM;
 	buf[1] = fpgaid;
@@ -473,7 +473,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Program init failed (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		goto dame;
 	}
@@ -492,7 +492,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 			mutex_unlock(modminer->modminer_mutex);
 
 			applog(LOG_ERR, "%s%u: bitstream file read error %d (%d bytes left)",
-				modminer->api->name, modminer->device_id, errno, len);
+				modminer->drv->name, modminer->device_id, errno, len);
 
 			goto dame;
 		}
@@ -507,7 +507,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 
 				if (opt_debug)
 					applog(LOG_DEBUG, "%s%u: Program timeout (%d:%d) sent %d tries %d",
-						modminer->api->name, modminer->device_id,
+						modminer->drv->name, modminer->device_id,
 						amount, err, remaining, tries);
 
 				if (!get_status(modminer, "write status", C_PROGRAMSTATUS2))
@@ -517,7 +517,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 				mutex_unlock(modminer->modminer_mutex);
 
 				applog(LOG_ERR, "%s%u: Program failed (%d:%d) sent %d",
-					modminer->api->name, modminer->device_id, amount, err, remaining);
+					modminer->drv->name, modminer->device_id, amount, err, remaining);
 
 				goto dame;
 			}
@@ -532,7 +532,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		if (upto >= nextmsg) {
 			applog(LOG_WARNING,
 				"%s%u: Programming %.1f%% (%d out of %d)",
-				modminer->api->name, modminer->device_id, upto*100, (totlen - len), totlen);
+				modminer->drv->name, modminer->device_id, upto*100, (totlen - len), totlen);
 
 			nextmsg += 0.1;
 		}
@@ -542,7 +542,7 @@ static bool modminer_fpga_upload_bitstream(struct cgpu_info *modminer)
 		goto undame;
 
 	applog(LOG_WARNING, "%s%u: Programming completed for all FPGA on %s",
-		modminer->api->name, modminer->device_id, devmsg);
+		modminer->drv->name, modminer->device_id, devmsg);
 
 	// Give it a 2/3s delay after programming
 	nmsleep(666);
@@ -653,7 +653,7 @@ static const char *modminer_delta_clock(struct thr_info *thr, int delta, bool te
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error writing set clock speed (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		return clocksetfail;
 	}
@@ -662,7 +662,7 @@ static const char *modminer_delta_clock(struct thr_info *thr, int delta, bool te
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error reading set clock speed (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		return clockreplyfail;
 	}
@@ -670,7 +670,7 @@ static const char *modminer_delta_clock(struct thr_info *thr, int delta, bool te
 	mutex_unlock(modminer->modminer_mutex);
 
 	applog(LOG_WARNING, "%s%u: Set clock speed %sto %u",
-			modminer->api->name, modminer->device_id,
+			modminer->drv->name, modminer->device_id,
 			(delta < 0) ? "down " : (delta > 0 ? "up " : ""),
 			modminer->clock);
 
@@ -691,7 +691,7 @@ static bool modminer_fpga_init(struct thr_info *thr)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error requesting USER code (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		return false;
 	}
@@ -700,14 +700,14 @@ static bool modminer_fpga_init(struct thr_info *thr)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Error reading USER code (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		return false;
 	}
 
 	if (memcmp(buf, BISTREAM_USER_ID, 4)) {
 		applog(LOG_ERR, "%s%u: FPGA not programmed",
-			modminer->api->name, modminer->device_id);
+			modminer->drv->name, modminer->device_id);
 
 		if (!modminer_fpga_upload_bitstream(modminer))
 			return false;
@@ -717,7 +717,7 @@ static bool modminer_fpga_init(struct thr_info *thr)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_DEBUG, "%s%u: FPGA is already programmed :)",
-			modminer->api->name, modminer->device_id);
+			modminer->drv->name, modminer->device_id);
 	}
 
 	modminer->clock = MODMINER_DEF_CLOCK;
@@ -773,7 +773,7 @@ static bool modminer_start_work(struct thr_info *thr)
 		mutex_unlock(modminer->modminer_mutex);
 
 		applog(LOG_ERR, "%s%u: Start work failed (%d:%d)",
-			modminer->api->name, modminer->device_id, amount, err);
+			modminer->drv->name, modminer->device_id, amount, err);
 
 		return false;
 	}
@@ -827,14 +827,14 @@ static void check_temperature(struct thr_info *thr)
 			if (modminer->temp < MODMINER_RECOVER_TEMP) {
 				state->overheated = false;
 				applog(LOG_WARNING, "%s%u: Recovered, temp less than (%.1f) now %.3f",
-					modminer->api->name, modminer->device_id,
+					modminer->drv->name, modminer->device_id,
 					MODMINER_RECOVER_TEMP, modminer->temp);
 			}
 		}
 		else if (modminer->temp >= MODMINER_OVERHEAT_TEMP) {
 			if (modminer->temp >= MODMINER_CUTOFF_TEMP) {
 				applog(LOG_WARNING, "%s%u: Hit thermal cutoff limit! (%.1f) at %.3f",
-					modminer->api->name, modminer->device_id,
+					modminer->drv->name, modminer->device_id,
 					MODMINER_CUTOFF_TEMP, modminer->temp);
 
 				modminer_delta_clock(thr, MODMINER_CLOCK_CUTOFF, true, false);
@@ -842,7 +842,7 @@ static void check_temperature(struct thr_info *thr)
 				dev_error(modminer, REASON_DEV_THERMAL_CUTOFF);
 			} else {
 				applog(LOG_WARNING, "%s%u: Overheat limit (%.1f) reached %.3f",
-					modminer->api->name, modminer->device_id,
+					modminer->drv->name, modminer->device_id,
 					MODMINER_OVERHEAT_TEMP, modminer->temp);
 
 				// If it's defined to be 0 then don't call modminer_delta_clock()
@@ -909,7 +909,7 @@ static uint64_t modminer_process_results(struct thr_info *thr)
 			}
 
 			applog(LOG_ERR, "%s%u: Error sending (get nonce) (%d:%d)",
-				modminer->api->name, modminer->device_id, amount, err);
+				modminer->drv->name, modminer->device_id, amount, err);
 
 			return -1;
 		}
@@ -936,7 +936,7 @@ static uint64_t modminer_process_results(struct thr_info *thr)
 			}
 
 			applog(LOG_ERR, "%s%u: Error reading (get nonce) (%d:%d)",
-				modminer->api->name, modminer->device_id, amount+amount2, err);
+				modminer->drv->name, modminer->device_id, amount+amount2, err);
 		}
 
 		if (memcmp(&nonce, "\xff\xff\xff\xff", 4)) {
@@ -975,7 +975,7 @@ static uint64_t modminer_process_results(struct thr_info *thr)
 				if (state->death_stage_one) {
 					modminer_delta_clock(thr, MODMINER_CLOCK_DEAD, false, true);
 					applog(LOG_ERR, "%s%u: DEATH clock down",
-						modminer->api->name, modminer->device_id);
+						modminer->drv->name, modminer->device_id);
 
 					// reset the death info and DISABLE it
 					state->last_nonce.tv_sec = 0;
@@ -985,7 +985,7 @@ static uint64_t modminer_process_results(struct thr_info *thr)
 				} else {
 					modminer_delta_clock(thr, MODMINER_CLOCK_DEAD, false, true);
 					applog(LOG_ERR, "%s%u: death clock down",
-						modminer->api->name, modminer->device_id);
+						modminer->drv->name, modminer->device_id);
 
 					state->death_stage_one = true;
 				}
@@ -1141,10 +1141,11 @@ static char *modminer_set_device(struct cgpu_info *modminer, char *option, char 
 	return replybuf;
 }
 
-struct device_api modminer_api = {
+struct device_drv modminer_drv = {
+	.drv = DRIVER_MODMINER,
 	.dname = "modminer",
 	.name = "MMQ",
-	.api_detect = modminer_detect,
+	.drv_detect = modminer_detect,
 	.get_statline_before = get_modminer_statline_before,
 	.set_device = modminer_set_device,
 	.thread_prepare = modminer_fpga_prepare,
diff --git a/driver-opencl.c b/driver-opencl.c
index 01e7019..966d8cd 100644
--- a/driver-opencl.c
+++ b/driver-opencl.c
@@ -50,24 +50,24 @@ extern int gpur_thr_id;
 extern bool opt_noadl;
 extern bool have_opencl;
 
-
-
 extern void *miner_thread(void *userdata);
 extern int dev_from_id(int thr_id);
 extern void tailsprintf(char *f, const char *fmt, ...);
 extern void wlog(const char *f, ...);
 extern void decay_time(double *f, double fadd);
 
-
 /**********************************************/
 
+#ifdef HAVE_OPENCL
+struct device_drv opencl_drv;
+#endif
+
 #ifdef HAVE_ADL
 extern float gpu_temp(int gpu);
 extern int gpu_fanspeed(int gpu);
 extern int gpu_fanpercent(int gpu);
 #endif
 
-
 #ifdef HAVE_OPENCL
 char *set_vector(char *arg)
 {
@@ -591,28 +591,20 @@ char *set_intensity(char *arg)
 
 	return NULL;
 }
-#endif
-
-
-#ifdef HAVE_OPENCL
-struct device_api opencl_api;
 
 char *print_ndevs_and_exit(int *ndevs)
 {
 	opt_log_output = true;
-	opencl_api.api_detect();
+	opencl_drv.drv_detect();
 	clear_adl(*ndevs);
 	applog(LOG_INFO, "%i GPU devices max detected", *ndevs);
 	exit(*ndevs);
 }
 #endif
 
-
 struct cgpu_info gpus[MAX_GPUDEVICES]; /* Maximum number apparently possible */
 struct cgpu_info *cpus;
 
-
-
 #ifdef HAVE_OPENCL
 
 /* In dynamic mode, only the first thread of each device will be in use.
@@ -637,9 +629,6 @@ void pause_dynamic_threads(int gpu)
 	}
 }
 
-
-struct device_api opencl_api;
-
 #endif /* HAVE_OPENCL */
 
 #if defined(HAVE_OPENCL) && defined(HAVE_CURSES)
@@ -773,7 +762,7 @@ retry:
 		for (i = 0; i < mining_threads; ++i) {
 			thr = &thr_info[i];
 			cgpu = thr->cgpu;
-			if (cgpu->api != &opencl_api)
+			if (cgpu->drv->drv != DRIVER_OPENCL)
 				continue;
 			if (dev_from_id(i) != selected)
 				continue;
@@ -1160,7 +1149,7 @@ select_cgpu:
 	for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
 		thr = &thr_info[thr_id];
 		cgpu = thr->cgpu;
-		if (cgpu->api != &opencl_api)
+		if (cgpu->drv->drv != DRIVER_OPENCL)
 			continue;
 		if (dev_from_id(thr_id) != gpu)
 			continue;
@@ -1185,7 +1174,7 @@ select_cgpu:
 
 		thr = &thr_info[thr_id];
 		cgpu = thr->cgpu;
-		if (cgpu->api != &opencl_api)
+		if (cgpu->drv->drv != DRIVER_OPENCL)
 			continue;
 		if (dev_from_id(thr_id) != gpu)
 			continue;
@@ -1222,7 +1211,7 @@ select_cgpu:
 	for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
 		thr = &thr_info[thr_id];
 		cgpu = thr->cgpu;
-		if (cgpu->api != &opencl_api)
+		if (cgpu->drv->drv != DRIVER_OPENCL)
 			continue;
 		if (dev_from_id(thr_id) != gpu)
 			continue;
@@ -1243,8 +1232,6 @@ void *reinit_gpu(__maybe_unused void *userdata)
 
 
 #ifdef HAVE_OPENCL
-struct device_api opencl_api;
-
 static void opencl_detect()
 {
 	int i;
@@ -1263,7 +1250,7 @@ static void opencl_detect()
 
 		cgpu = &gpus[i];
 		cgpu->deven = DEV_ENABLED;
-		cgpu->api = &opencl_api;
+		cgpu->drv = &opencl_drv;
 		cgpu->device_id = i;
 		cgpu->threads = opt_g_threads;
 		cgpu->virtual_gpu = i;
@@ -1570,10 +1557,11 @@ static void opencl_thread_shutdown(struct thr_info *thr)
 	clReleaseContext(clState->context);
 }
 
-struct device_api opencl_api = {
+struct device_drv opencl_drv = {
+	.drv = DRIVER_OPENCL,
 	.dname = "opencl",
 	.name = "GPU",
-	.api_detect = opencl_detect,
+	.drv_detect = opencl_detect,
 	.reinit_device = reinit_opencl_device,
 #ifdef HAVE_ADL
 	.get_statline_before = get_opencl_statline_before,
diff --git a/driver-opencl.h b/driver-opencl.h
index c1d6182..22bd9ec 100644
--- a/driver-opencl.h
+++ b/driver-opencl.h
@@ -30,6 +30,6 @@ extern void pause_dynamic_threads(int gpu);
 extern bool have_opencl;
 extern int opt_platform_id;
 
-extern struct device_api opencl_api;
+extern struct device_drv opencl_drv;
 
 #endif /* __DEVICE_GPU_H__ */
diff --git a/driver-ztex.c b/driver-ztex.c
index 23aa97e..4a61a5c 100644
--- a/driver-ztex.c
+++ b/driver-ztex.c
@@ -30,7 +30,7 @@
 
 #define GOLDEN_BACKLOG 5
 
-struct device_api ztex_api;
+struct device_drv ztex_drv;
 
 // Forward declarations
 static void ztex_disable(struct thr_info* thr);
@@ -68,7 +68,7 @@ static void ztex_detect(void)
 
 	for (i = 0; i < cnt; i++) {
 		ztex = calloc(1, sizeof(struct cgpu_info));
-		ztex->api = &ztex_api;
+		ztex->drv = &ztex_drv;
 		ztex->device_ztex = ztex_devices[i]->dev;
 		ztex->threads = 1;
 		ztex->device_ztex->fpgaNum = 0;
@@ -82,7 +82,7 @@ static void ztex_detect(void)
 
 		for (j = 1; j < fpgacount; j++) {
 			ztex = calloc(1, sizeof(struct cgpu_info));
-			ztex->api = &ztex_api;
+			ztex->drv = &ztex_drv;
 			ztex_slave = calloc(1, sizeof(struct libztex_device));
 			memcpy(ztex_slave, ztex_devices[i]->dev, sizeof(struct libztex_device));
 			ztex->device_ztex = ztex_slave;
@@ -394,10 +394,10 @@ static void ztex_disable(struct thr_info *thr)
 	ztex_shutdown(thr);
 }
 
-struct device_api ztex_api = {
+struct device_drv ztex_drv = {
 	.dname = "ztex",
 	.name = "ZTX",
-	.api_detect = ztex_detect,
+	.drv_detect = ztex_detect,
 	.get_statline_before = ztex_statline_before,
 	.thread_prepare = ztex_prepare,
 	.scanhash = ztex_scanhash,
diff --git a/findnonce.c b/findnonce.c
index bf39a12..fcf75f2 100644
--- a/findnonce.c
+++ b/findnonce.c
@@ -204,7 +204,7 @@ static void *postcalc_hash(void *userdata)
 	 * end of the res[] array */
 	if (unlikely(pcd->res[FOUND] & ~FOUND)) {
 		applog(LOG_WARNING, "%s%d: invalid nonce count - HW error",
-				thr->cgpu->api->name, thr->cgpu->device_id);
+				thr->cgpu->drv->name, thr->cgpu->device_id);
 		hw_errors++;
 		thr->cgpu->hw_errors++;
 		pcd->res[FOUND] &= FOUND;
diff --git a/fpgautils.c b/fpgautils.c
index 487395c..307bec4 100644
--- a/fpgautils.c
+++ b/fpgautils.c
@@ -104,14 +104,14 @@ int serial_autodetect_devserial(__maybe_unused detectone_func_t detectone, __may
 #endif
 }
 
-int _serial_detect(struct device_api *api, detectone_func_t detectone, autoscan_func_t autoscan, bool forceauto)
+int _serial_detect(struct device_drv *drv, detectone_func_t detectone, autoscan_func_t autoscan, bool forceauto)
 {
 	struct string_elist *iter, *tmp;
 	const char *dev, *colon;
 	bool inhibitauto = false;
 	char found = 0;
-	size_t namel = strlen(api->name);
-	size_t dnamel = strlen(api->dname);
+	size_t namel = strlen(drv->name);
+	size_t dnamel = strlen(drv->dname);
 
 	list_for_each_entry_safe(iter, tmp, &scan_devices, list) {
 		dev = iter->string;
@@ -119,8 +119,8 @@ int _serial_detect(struct device_api *api, detectone_func_t detectone, autoscan_
 			size_t idlen = colon - dev;
 
 			// allow either name:device or dname:device
-			if ((idlen != namel || strncasecmp(dev, api->name, idlen))
-			&&  (idlen != dnamel || strncasecmp(dev, api->dname, idlen)))
+			if ((idlen != namel || strncasecmp(dev, drv->name, idlen))
+			&&  (idlen != dnamel || strncasecmp(dev, drv->dname, idlen)))
 				continue;
 
 			dev = colon + 1;
diff --git a/fpgautils.h b/fpgautils.h
index 1802548..b979b6c 100644
--- a/fpgautils.h
+++ b/fpgautils.h
@@ -16,13 +16,13 @@
 typedef bool(*detectone_func_t)(const char*);
 typedef int(*autoscan_func_t)();
 
-extern int _serial_detect(struct device_api *api, detectone_func_t, autoscan_func_t, bool force_autoscan);
-#define serial_detect_fauto(api, detectone, autoscan)  \
-	_serial_detect(api, detectone, autoscan, true)
-#define serial_detect_auto(api, detectone, autoscan)  \
-	_serial_detect(api, detectone, autoscan, false)
-#define serial_detect(api, detectone)  \
-	_serial_detect(api, detectone, NULL, false)
+extern int _serial_detect(struct device_drv *drv, detectone_func_t, autoscan_func_t, bool force_autoscan);
+#define serial_detect_fauto(drv, detectone, autoscan)  \
+	_serial_detect(drv, detectone, autoscan, true)
+#define serial_detect_auto(drv, detectone, autoscan)  \
+	_serial_detect(drv, detectone, autoscan, false)
+#define serial_detect(drv, detectone)  \
+	_serial_detect(drv, detectone, NULL, false)
 extern int serial_autodetect_devserial(detectone_func_t, const char *prodname);
 extern int serial_autodetect_udev(detectone_func_t, const char *prodname);
 
diff --git a/miner.h b/miner.h
index d892ed0..4e888f3 100644
--- a/miner.h
+++ b/miner.h
@@ -196,6 +196,15 @@ static inline int fsync (int fd)
 #endif
 #endif
 
+enum drv_driver {
+	DRIVER_OPENCL,
+	DRIVER_ICARUS,
+	DRIVER_BITFORCE,
+	DRIVER_MODMINER,
+	DRIVER_ZTEX,
+	DRIVER_CPU,
+};
+
 enum alive {
 	LIFE_WELL,
 	LIFE_SICK,
@@ -263,12 +272,14 @@ struct api_data;
 struct thr_info;
 struct work;
 
-struct device_api {
+struct device_drv {
+	enum drv_driver drv;
+
 	char *dname;
 	char *name;
 
-	// API-global functions
-	void (*api_detect)();
+	// DRV-global functions
+	void (*drv_detect)();
 
 	// Device-specific functions
 	void (*reinit_device)(struct cgpu_info *);
@@ -365,7 +376,7 @@ struct cgminer_pool_stats {
 
 struct cgpu_info {
 	int cgminer_id;
-	struct device_api *api;
+	struct device_drv *drv;
 	int device_id;
 	char *name;
 	char *device_path;
diff --git a/usbutils.c b/usbutils.c
index 0d9e79a..bebd722 100644
--- a/usbutils.c
+++ b/usbutils.c
@@ -99,15 +99,15 @@ static struct usb_find_devices find_dev[] = {
 };
 
 #ifdef USE_BITFORCE
-extern struct device_api bitforce_api;
+extern struct device_drv bitforce_drv;
 #endif
 
 #ifdef USE_ICARUS
-extern struct device_api icarus_api;
+extern struct device_drv icarus_drv;
 #endif
 
 #ifdef USE_MODMINER
-extern struct device_api modminer_api;
+extern struct device_drv modminer_drv;
 #endif
 
 /*
@@ -907,7 +907,7 @@ dame:
 	return false;
 }
 
-static bool usb_check_device(struct device_api *api, struct libusb_device *dev, struct usb_find_devices *look)
+static bool usb_check_device(struct device_drv *drv, struct libusb_device *dev, struct usb_find_devices *look)
 {
 	struct libusb_device_descriptor desc;
 	int err;
@@ -920,25 +920,25 @@ static bool usb_check_device(struct device_api *api, struct libusb_device *dev, 
 
 	if (desc.idVendor != look->idVendor || desc.idProduct != look->idProduct) {
 		applog(LOG_DEBUG, "%s looking for %04x:%04x but found %04x:%04x instead",
-			api->name, look->idVendor, look->idProduct, desc.idVendor, desc.idProduct);
+			drv->name, look->idVendor, look->idProduct, desc.idVendor, desc.idProduct);
 
 		return false;
 	}
 
 	applog(LOG_DEBUG, "%s looking for and found %04x:%04x",
-		api->name, look->idVendor, look->idProduct);
+		drv->name, look->idVendor, look->idProduct);
 
 	return true;
 }
 
-static struct usb_find_devices *usb_check_each(int drv, struct device_api *api, struct libusb_device *dev)
+static struct usb_find_devices *usb_check_each(int drvnum, struct device_drv *drv, struct libusb_device *dev)
 {
 	struct usb_find_devices *found;
 	int i;
 
 	for (i = 0; find_dev[i].drv != DRV_LAST; i++)
-		if (find_dev[i].drv == drv) {
-			if (usb_check_device(api, dev, &(find_dev[i]))) {
+		if (find_dev[i].drv == drvnum) {
+			if (usb_check_device(drv, dev, &(find_dev[i]))) {
 				found = malloc(sizeof(*found));
 				memcpy(found, &(find_dev[i]), sizeof(*found));
 				return found;
@@ -948,27 +948,27 @@ static struct usb_find_devices *usb_check_each(int drv, struct device_api *api, 
 	return NULL;
 }
 
-static struct usb_find_devices *usb_check(__maybe_unused struct device_api *api, __maybe_unused struct libusb_device *dev)
+static struct usb_find_devices *usb_check(__maybe_unused struct device_drv *drv, __maybe_unused struct libusb_device *dev)
 {
 #ifdef USE_BITFORCE
-	if (api == &bitforce_api)
-		return usb_check_each(DRV_BITFORCE, api, dev);
+	if (drv->drv == DRIVER_BITFORCE)
+		return usb_check_each(DRV_BITFORCE, drv, dev);
 #endif
 
 #ifdef USE_ICARUS
-	if (api == &icarus_api)
-		return usb_check_each(DRV_ICARUS, api, dev);
+	if (drv->drv == DRIVER_ICARUS)
+		return usb_check_each(DRV_ICARUS, drv, dev);
 #endif
 
 #ifdef USE_MODMINER
-	if (api == &modminer_api)
-		return usb_check_each(DRV_MODMINER, api, dev);
+	if (drv->drv == DRIVER_MODMINER)
+		return usb_check_each(DRV_MODMINER, drv, dev);
 #endif
 
 	return NULL;
 }
 
-void usb_detect(struct device_api *api, bool (*device_detect)(struct libusb_device *, struct usb_find_devices *))
+void usb_detect(struct device_drv *drv, bool (*device_detect)(struct libusb_device *, struct usb_find_devices *))
 {
 	libusb_device **list;
 	ssize_t count, i;
@@ -995,7 +995,7 @@ void usb_detect(struct device_api *api, bool (*device_detect)(struct libusb_devi
 
 			mutex_unlock(list_lock);
 
-			found = usb_check(api, list[i]);
+			found = usb_check(drv, list[i]);
 			if (!found)
 				release_dev(list[i], true);
 			else
@@ -1106,7 +1106,7 @@ static void newstats(struct cgpu_info *cgpu)
 	cgpu->usbstat = ++next_stat;
 
 	usb_stats = realloc(usb_stats, sizeof(*usb_stats) * next_stat);
-	usb_stats[next_stat-1].name = cgpu->api->name;
+	usb_stats[next_stat-1].name = cgpu->drv->name;
 	usb_stats[next_stat-1].device_id = -1;
 	usb_stats[next_stat-1].details = calloc(1, sizeof(struct cg_usb_stats_details) * C_MAX * 2);
 	for (i = 1; i < C_MAX * 2; i += 2)
diff --git a/usbutils.h b/usbutils.h
index 156e2a2..2ee8615 100644
--- a/usbutils.h
+++ b/usbutils.h
@@ -116,12 +116,12 @@ enum usb_cmds {
 	C_MAX
 };
 
-struct device_api;
+struct device_drv;
 struct cgpu_info;
 
 void usb_uninit(struct cgpu_info *cgpu);
 bool usb_init(struct cgpu_info *cgpu, struct libusb_device *dev, struct usb_find_devices *found);
-void usb_detect(struct device_api *api, bool (*device_detect)(struct libusb_device *, struct usb_find_devices *));
+void usb_detect(struct device_drv *drv, bool (*device_detect)(struct libusb_device *, struct usb_find_devices *));
 struct api_data *api_usb_stats(int *count);
 void update_usb_stats(struct cgpu_info *cgpu);
 int _usb_read(struct cgpu_info *cgpu, int ep, char *buf, size_t bufsiz, int *processed, unsigned int timeout, int eol, enum usb_cmds, bool ftdi);