hameg-hmo: Publish driver options.

diff --git a/src/hardware/hameg-hmo/api.c b/src/hardware/hameg-hmo/api.c
index f9ba81b8051cd6b331b2021cb83374e38880f88b..b516b2d8f08fd999298cf078913b4f7c4397ef84 100644 (file)
--- a/src/hardware/hameg-hmo/api.c
+++ b/src/hardware/hameg-hmo/api.c
@@ -29,6 +29,10 @@ static const char *manufacturers[] = {
        "HAMEG",
 };
 
+static const uint32_t drvopts[] = {
+       SR_CONF_OSCILLOSCOPE,
+};
+
 static const uint32_t scanopts[] = {
        SR_CONF_CONN,
        SR_CONF_SERIALCOMM,
@@ -497,17 +501,16 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
                       const struct sr_channel_group *cg)
 {
-       int cg_type;
-       struct dev_context *devc;
-       struct scope_config *model;
+       int cg_type = CG_NONE;
+       struct dev_context *devc = NULL;
+       struct scope_config *model = NULL;
 
-       if (!sdi || !(devc = sdi->priv))
-               return SR_ERR_ARG;
-
-       if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
-               return SR_ERR;
+       if (sdi && (devc = sdi->priv)) {
+               if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
+                       return SR_ERR;
 
-       model = devc->model_config;
+               model = devc->model_config;
+       }
 
        switch (key) {
        case SR_CONF_SCAN_OPTIONS:
@@ -516,9 +519,12 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
                break;
        case SR_CONF_DEVICE_OPTIONS:
                if (cg_type == CG_NONE) {
-                       *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               model->devopts, model->num_devopts,
-                               sizeof(uint32_t));
+                       if (model)
+                               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                                       model->devopts, model->num_devopts, sizeof(uint32_t));
+                       else
+                               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+                                       drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
                } else if (cg_type == CG_ANALOG) {
                        *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
                                model->analog_devopts, model->num_analog_devopts,
@@ -535,14 +541,20 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
                           g_strv_length((char **)*model->coupling_options));
                break;
        case SR_CONF_TRIGGER_SOURCE:
+               if (!model)
+                       return SR_ERR_ARG;
                *data = g_variant_new_strv(*model->trigger_sources,
                           g_strv_length((char **)*model->trigger_sources));
                break;
        case SR_CONF_TRIGGER_SLOPE:
+               if (!model)
+                       return SR_ERR_ARG;
                *data = g_variant_new_strv(*model->trigger_slopes,
                           g_strv_length((char **)*model->trigger_slopes));
                break;
        case SR_CONF_TIMEBASE:
+               if (!model)
+                       return SR_ERR_ARG;
                *data = build_tuples(model->timebases, model->num_timebases);
                break;
        case SR_CONF_VDIV: