session.c: Fix key order.

[libsigrok.git] / src / device.c

diff --git a/src/device.c b/src/device.c
index d7c32567fb7971f62925d118151a8a8b0bab7064..dd34f79600dd4fe81797fad4b4b9a8cc3db46196 100644 (file)
--- a/src/device.c
+++ b/src/device.c
@@ -20,7 +20,7 @@
 #include <stdio.h>
 #include <glib.h>
 #include "config.h" /* Needed for HAVE_LIBUSB_1_0 and others. */
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
 #include "libsigrok-internal.h"
 
 /** @cond PRIVATE */
@@ -133,6 +133,25 @@ SR_API int sr_dev_channel_enable(struct sr_channel *channel,
        return SR_OK;
 }
 
+/* Returns the next enabled channel, wrapping around if necessary. */
+SR_PRIV struct sr_channel *sr_next_enabled_channel(const struct sr_dev_inst *sdi,
+               struct sr_channel *cur_channel)
+{
+       struct sr_channel *next_channel;
+       GSList *l;
+
+       next_channel = cur_channel;
+       do {
+               l = g_slist_find(sdi->channels, next_channel);
+               if (l && l->next)
+                       next_channel = l->next->data;
+               else
+                       next_channel = sdi->channels->data;
+       } while (!next_channel->enabled);
+
+       return next_channel;
+}
+
 /**
  * Determine whether the specified device instance has the specified
  * capability.
@@ -547,7 +566,7 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi)
        if ((!sdi->connection_id) && (sdi->inst_type == SR_INST_USB)) {
                /* connection_id isn't populated, let's do that here. */
 
-               drvc = sdi->driver->priv;
+               drvc = sdi->driver->context;
                usb = sdi->conn;
 
                if ((cnt = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist)) < 0) {