AP_HAL: remove SPIDriver

SPIDevice now controls all accesses to SPI bus.

libraries/AP_HAL/AP_HAL.h

@@ -10,7 +10,6 @@
 
 /* HAL Module Classes (all pure virtual) */
 #include "UARTDriver.h"
-#include "SPIDriver.h"
 #include "AnalogIn.h"
 #include "Storage.h"
 #include "GPIO.h"

libraries/AP_HAL/AP_HAL_Namespace.h

@@ -51,7 +51,6 @@ namespace AP_HAL {
     enum SPIDeviceType {
         // Devices using AP_HAL::SPIDevice abstraction
         SPIDevice_Type              = -1,
-        SPIDevice_ADS7844           = 1,
     };
 
     // Must be implemented by the concrete HALs.

libraries/AP_HAL/HAL.h

@@ -6,7 +6,7 @@
 #include "GPIO.h"
 #include "RCInput.h"
 #include "RCOutput.h"
-#include "SPIDriver.h"
+#include "SPIDevice.h"
 #include "Storage.h"
 #include "UARTDriver.h"
 #include "system.h"

libraries/AP_HAL/SPIDevice.h

@@ -56,6 +56,12 @@ public:
     virtual int get_fd() override = 0;
 };
 
-/* SPIDeviceManager is temporarily provided by SPIDriver.h */
+class SPIDeviceManager {
+public:
+    virtual OwnPtr<SPIDevice> get_device(const char *name)
+    {
+        return nullptr;
+    }
+};
 
 }

libraries/AP_HAL/SPIDriver.h

@@ -1,69 +0,0 @@
-/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-/*
- * Copyright (C) 2015-2016  Intel Corporation. All rights reserved.
- *
- * This file is free software: you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This file is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-#include <inttypes.h>
-
-#include "AP_HAL_Namespace.h"
-#include "SPIDevice.h"
-#include "utility/OwnPtr.h"
-
-namespace AP_HAL {
-
-class SPIDeviceManager {
-public:
-    virtual void init() = 0;
-    virtual SPIDeviceDriver* device(enum SPIDeviceType, uint8_t index = 0) = 0;
-    virtual OwnPtr<SPIDevice> get_device(const char *name)
-    {
-        return nullptr;
-    }
-};
-
-/**
- * We still need an abstraction for performing bulk
- * transfers to be portable to other platforms.
- */
-
-class SPIDeviceDriver {
-public:
-    virtual void init() = 0;
-    virtual Semaphore* get_semaphore() = 0;
-    virtual bool transaction(const uint8_t *tx, uint8_t *rx, uint16_t len) = 0;
-
-    virtual void cs_assert() = 0;
-    virtual void cs_release() = 0;
-    virtual uint8_t transfer (uint8_t data) = 0;
-    virtual void transfer (const uint8_t *data, uint16_t len) = 0;
-
-    /**
-       optional set_bus_speed() interface. This can be used by drivers
-       to request higher speed for sensor registers once the sensor is
-       initialised. This is used by the MPU6000 driver which can
-       handle 20MHz for sensor register reads, but only 1MHz for other
-       registers.
-     */
-    enum bus_speed {
-        SPI_SPEED_LOW, SPI_SPEED_HIGH
-    };
-
-    virtual void set_bus_speed(enum bus_speed speed) {}
-};
-
-}