uhd: Add APIs for getting the available power range

The previously added APIs for getting/setting power reference levels was
missing an option to read back the currently available power levels
(minimum and maximum power levels).
This adds getters for TX and RX power ranges to multi_usrp and
radio_control. The power API is thus now more similar to the gain API,
which always had getters for gain ranges.

1 files changed, 12 insertions, 0 deletions

diff --git a/host/lib/usrp/multi_usrp_rfnoc.cpp b/host/lib/usrp/multi_usrp_rfnoc.cpp
index 26932ef30..659d879e8 100644
--- a/host/lib/usrp/multi_usrp_rfnoc.cpp
+++ b/host/lib/usrp/multi_usrp_rfnoc.cpp
@@ -1484,6 +1484,12 @@ public:
         return rx_chain.radio->get_rx_power_reference(rx_chain.block_chan);
     }
 
+    meta_range_t get_rx_power_range(const size_t chan)
+    {
+        auto& rx_chain = _get_rx_chan(chan);
+        return rx_chain.radio->get_rx_power_range(rx_chain.block_chan);
+    }
+
     void set_rx_antenna(const std::string& ant, size_t chan = 0)
     {
         MUX_RX_API_CALL(set_rx_antenna, ant);
@@ -1955,6 +1961,12 @@ public:
         return tx_chain.radio->get_tx_power_reference(tx_chain.block_chan);
     }
 
+    meta_range_t get_tx_power_range(const size_t chan)
+    {
+        auto& tx_chain = _get_tx_chan(chan);
+        return tx_chain.radio->get_tx_power_range(tx_chain.block_chan);
+    }
+
     void set_tx_antenna(const std::string& ant, size_t chan = 0)
     {
         MUX_TX_API_CALL(set_tx_antenna, ant);