host: x4xx: Implement GPIO API

This implements the GPIO API for X410 through get_gpio_attr and
set_gpio_attr. In ATR mode, which channel's ATR state is chosen by the
set_gpio_src call, setting e.g. DB0_RF0 for channel 0 or DB0_RF1 for
channel 1. In manual mode, all 24 bits (for both ports) are set in
a single register write.

Although the front panel of the device has two ports, labelled GPIO0 and
GPIO1, this API exposes them as though they were a single 24-bit GPIO
port.

1 files changed, 10 insertions, 0 deletions

diff --git a/host/lib/usrp/x400/x400_radio_control.hpp b/host/lib/usrp/x400/x400_radio_control.hpp
index 65b37cc2b..8848926c7 100644
--- a/host/lib/usrp/x400/x400_radio_control.hpp
+++ b/host/lib/usrp/x400/x400_radio_control.hpp
@@ -23,6 +23,8 @@
 #include <mutex>
 #include <string>
 #include <vector>
+#include <uhdlib/usrp/cores/gpio_atr_3000.hpp>
+#include "x400_gpio_control.hpp"
 
 namespace uhd { namespace rfnoc {
 
@@ -55,6 +57,12 @@ public:
 
     uhd::eeprom_map_t get_db_eeprom() override;
 
+    // GPIO methods
+    std::vector<std::string> get_gpio_banks() const override;
+    uint32_t get_gpio_attr(const std::string& bank, const std::string& attr) override;
+    void set_gpio_attr(
+        const std::string& bank, const std::string& attr, const uint32_t value) override;
+
     // Shim calls for every method in rf_control_core
     double set_rate(const double rate) override;
     std::string get_tx_antenna(const size_t chan) const override;
@@ -171,6 +179,8 @@ private:
 
     uhd::features::adc_self_calibration_iface::sptr _adc_self_calibration;
 
+    x400::gpio_control::sptr _gpios;
+
     class fpga_onload : public uhd::features::fpga_load_notification_iface
     {
     public: