+ GVariant *gvar, *grange[2];
+ GVariantBuilder gvb;
+ int num_ols_changrp, i;
+
+ (void)cg;
+
+ 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_MATCH:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ trigger_matches, ARRAY_SIZE(trigger_matches),
+ sizeof(int32_t));
+ 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 channels in that group are
+ * enabled, making more room for samples for the enabled group.
+ */
+ ols_channel_mask(sdi);
+ num_ols_changrp = 0;
+ for (i = 0; i < 4; i++) {
+ if (devc->channel_mask & (0xff << (i * 8)))
+ num_ols_changrp++;
+ }
+ grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
+ if (num_ols_changrp)
+ grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
+ else
+ grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
+ *data = g_variant_new_tuple(grange, 2);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+
+ return SR_OK;
+}
+
+static int set_trigger(const struct sr_dev_inst *sdi, int stage)
+{
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
+ uint8_t cmd, arg[4];