src/ui/input/drivers/bma253/bma253.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_UI_INPUT_DRIVERS_BMA253_BMA253_H_
#define SRC_UI_INPUT_DRIVERS_BMA253_BMA253_H_

#include <lib/device-protocol/i2c-channel.h>
#include <lib/simplehid/simplehid.h>
#include <lib/zircon-internal/thread_annotations.h>
#include <threads.h>

#include <ddktl/device.h>
#include <fbl/mutex.h>
#include <hid/bma253.h>

namespace accel {

class Bma253;
using DeviceType = ddk::Device<Bma253>;

class Bma253 : public DeviceType, public ddk::HidbusProtocol<Bma253, ddk::base_protocol> {
 public:
  virtual ~Bma253() {}

  static zx_status_t Create(void* ctx, zx_device_t* parent);

  void DdkRelease() { delete this; }

  zx_status_t HidbusQuery(uint32_t options, hid_info_t* out_info);
  zx_status_t HidbusStart(const hidbus_ifc_protocol_t* ifc) { return simple_hid_.HidbusStart(ifc); }
  void HidbusStop() { simple_hid_.HidbusStop(); }
  zx_status_t HidbusGetDescriptor(hid_description_type_t desc_type, void* out_data_buffer,
                                  size_t data_size, size_t* out_data_actual);
  zx_status_t HidbusGetReport(hid_report_type_t rpt_type, uint8_t rpt_id, void* out_data_buffer,
                              size_t data_size, size_t* out_data_actual);
  zx_status_t HidbusSetReport(hid_report_type_t rpt_type, uint8_t rpt_id, const void* data_buffer,
                              size_t data_size);
  zx_status_t HidbusGetIdle(uint8_t rpt_id, uint8_t* out_duration);
  zx_status_t HidbusSetIdle(uint8_t rpt_id, uint8_t duration);
  zx_status_t HidbusGetProtocol(hid_protocol_t* out_protocol);
  zx_status_t HidbusSetProtocol(hid_protocol_t protocol);

  // Visible for testing.
  Bma253(zx_device_t* parent, ddk::I2cChannel i2c, zx::port port) : DeviceType(parent), i2c_(i2c) {
    simple_hid_ = simplehid::SimpleHid<bma253_input_rpt_t>(
        std::move(port), [this](bma253_input_rpt_t* report) { return GetInputReport(report); });
  }

  // Visible for testing.
  zx_status_t Init();

 private:
  zx_status_t GetInputReport(bma253_input_rpt_t* report);

  fbl::Mutex i2c_lock_;
  ddk::I2cChannel i2c_ TA_GUARDED(i2c_lock_);

  simplehid::SimpleHid<bma253_input_rpt_t> simple_hid_;
};

}  // namespace accel

#endif  // SRC_UI_INPUT_DRIVERS_BMA253_BMA253_H_