zircon/system/dev/display/mt8167s-display/mt-sysconfig.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 ZIRCON_SYSTEM_DEV_DISPLAY_MT8167S_DISPLAY_MT_SYSCONFIG_H_
#define ZIRCON_SYSTEM_DEV_DISPLAY_MT8167S_DISPLAY_MT_SYSCONFIG_H_
#include <ddk/protocol/platform/device.h>
#include <ddktl/device.h>
#include <fbl/unique_ptr.h>
#include <hwreg/mmio.h>
#include <lib/device-protocol/platform-device.h>
#include <lib/mmio/mmio.h>
#include <lib/zx/bti.h>
#include <zircon/assert.h>
#include <zircon/compiler.h>

#include <optional>

#include "common.h"
#include "registers-mutex.h"
#include "registers-sysconfig.h"

namespace mt8167s_display {

class MtSysConfig {
 public:
  MtSysConfig() {}

  // Init
  zx_status_t Init(zx_device_t* parent);
  zx_status_t Init(fbl::unique_ptr<ddk::MmioBuffer> syscfg_mmio,
                   fbl::unique_ptr<ddk::MmioBuffer> mutex_mmio) {
    syscfg_mmio_ = std::move(syscfg_mmio);
    mutex_mmio_ = std::move(mutex_mmio);
    initialized_ = true;
    return ZX_OK;
  }
  zx_status_t PowerOn(SysConfigModule module);
  zx_status_t PowerDown(SysConfigModule module);
  // This functin will create a default path for the display subsystem
  // The path in shown below. Bracketed statement are either MUX outputs (Multi or Single)
  // or inputs
  // OVL0->[OVL0_MOUT]->[COLOR0_SEL]->COLOR0->CCORR->AAL->GAMMA->DITHER->[DITHER_MOUT]->RDMA0->
  // ->[RDMA0_SOUT]->DSI0_SEL->DSI0
  // TODO(payamm): Add function that can create any valid path
  zx_status_t CreateDefaultPath();
  // Set 0 to the MOUT path of default path
  zx_status_t ClearDefaultPath();
  zx_status_t MutexClear();
  zx_status_t MutexReset();
  zx_status_t MutexEnable();
  zx_status_t MutexDisable();
  zx_status_t MutexSetDefault();
  void PrintRegisters();

 private:
  fbl::unique_ptr<ddk::MmioBuffer> syscfg_mmio_;
  fbl::unique_ptr<ddk::MmioBuffer> mutex_mmio_;
  pdev_protocol_t pdev_ = {nullptr, nullptr};
  bool initialized_ = false;
};

}  // namespace mt8167s_display

#endif  // ZIRCON_SYSTEM_DEV_DISPLAY_MT8167S_DISPLAY_MT_SYSCONFIG_H_