+
+SR_PRIV int std_dev_clear(const struct sr_dev_driver *driver)
+{
+ return std_dev_clear_with_callback(driver, NULL);
+}
+
+/**
+ * Standard driver dev_list() callback API helper.
+ *
+ * This function can be used as the dev_list() callback by most drivers.
+ *
+ * Return the devices contained in the driver context instances list.
+ *
+ * @param[in] di The driver instance to use. Must not be NULL.
+ *
+ * @retval NULL Error, or the list is empty.
+ * @retval other The list of device instances of this driver.
+ */
+SR_PRIV GSList *std_dev_list(const struct sr_dev_driver *di)
+{
+ struct drv_context *drvc;
+
+ if (!di) {
+ sr_err("%s: Invalid argument.", __func__);
+ return NULL;
+ }
+
+ drvc = di->context;
+
+ return drvc->instances;
+}
+
+/**
+ * Standard driver scan() callback API helper.
+ *
+ * This function can be used to perform common tasks required by a driver's
+ * scan() callback. It will initialize the driver for each device on the list
+ * and add the devices on the list to the driver's device instance list.
+ * Usually it should be used as the last step in the scan() callback, right
+ * before returning.
+ *
+ * Note: This function can only be used if std_init() has been called
+ * previously by the driver.
+ *
+ * Example:
+ * @code{c}
+ * static GSList *scan(struct sr_dev_driver *di, GSList *options)
+ * {
+ * struct GSList *device;
+ * struct sr_dev_inst *sdi;
+ *
+ * sdi = g_new0(sr_dev_inst, 1);
+ * sdi->vendor = ...;
+ * ...
+ * devices = g_slist_append(devices, sdi);
+ * ...
+ * return std_scan_complete(di, devices);
+ * }
+ * @endcode
+ *
+ * @param[in] di The driver instance to use. Must not be NULL.
+ * @param[in] devices List of newly discovered devices (struct sr_dev_inst).
+ * May be NULL.
+ *
+ * @return The @p devices list.
+ */
+SR_PRIV GSList *std_scan_complete(struct sr_dev_driver *di, GSList *devices)
+{
+ struct drv_context *drvc;
+ GSList *l;
+
+ if (!di) {
+ sr_err("Invalid driver instance (di), cannot complete scan.");
+ return NULL;
+ }
+
+ drvc = di->context;
+
+ for (l = devices; l; l = l->next) {
+ struct sr_dev_inst *sdi = l->data;
+ if (!sdi) {
+ sr_err("Invalid device instance, cannot complete scan.");
+ return NULL;
+ }
+ sdi->driver = di;
+ }
+
+ drvc->instances = g_slist_concat(drvc->instances, g_slist_copy(devices));
+
+ return devices;
+}
+
+SR_PRIV int std_opts_config_list(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg,
+ const uint32_t scanopts[], size_t scansize, const uint32_t drvopts[],
+ size_t drvsize, const uint32_t devopts[], size_t devsize)
+{
+ switch (key) {
+ case SR_CONF_SCAN_OPTIONS:
+ /* Always return scanopts, regardless of sdi or cg. */
+ if (!scanopts)
+ return SR_ERR_ARG;
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ scanopts, scansize, sizeof(uint32_t));
+ break;
+ case SR_CONF_DEVICE_OPTIONS:
+ if (!sdi) {
+ /* sdi == NULL: return drvopts. */
+ if (!drvopts)
+ return SR_ERR_ARG;
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ drvopts, drvsize, sizeof(uint32_t));
+ } else if (sdi && !cg) {
+ /* sdi != NULL, cg == NULL: return devopts. */
+ if (!devopts)
+ return SR_ERR_ARG;
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts, devsize, sizeof(uint32_t));
+ } else {
+ /*
+ * Note: sdi != NULL, cg != NULL is not handled by
+ * this function since it's very driver-specific.
+ */
+ sr_err("%s: %s: sdi/cg != NULL: not handling.",
+ sdi->driver->name, __func__);
+ return SR_ERR_ARG;
+ }
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+SR_PRIV GVariant *std_gvar_tuple_array(const uint64_t (*a)[][2], unsigned int n)
+{
+ unsigned int i;
+ GVariant *rational[2];
+ GVariantBuilder gvb;
+
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+
+ for (i = 0; i < n; i++) {
+ rational[0] = g_variant_new_uint64((*a)[i][0]);
+ rational[1] = g_variant_new_uint64((*a)[i][1]);
+
+ /* FIXME: Valgrind reports a memory leak here. */
+ g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
+ }
+
+ return g_variant_builder_end(&gvb);
+}
+
+SR_PRIV GVariant *std_gvar_tuple_rational(const struct sr_rational *r, unsigned int n)
+{
+ unsigned int i;
+ GVariant *rational[2];
+ GVariantBuilder gvb;
+
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+
+ for (i = 0; i < n; i++) {
+ rational[0] = g_variant_new_uint64(r[i].p);
+ rational[1] = g_variant_new_uint64(r[i].q);
+
+ /* FIXME: Valgrind reports a memory leak here. */
+ g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
+ }
+
+ return g_variant_builder_end(&gvb);
+}