zircon/system/dev/board/mt8167s_ref/mt8167-power.cc

// 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.

#include <ddk/debug.h>
#include <ddk/metadata.h>
#include <ddk/metadata/power.h>
#include <ddk/platform-defs.h>
#include <ddktl/protocol/powerimpl.h>
#include <soc/mt8167/mt8167-hw.h>

#include "mt8167.h"

namespace board_mt8167 {

zx_status_t Mt8167::Vgp1Enable() {
  ddk::PowerImplProtocolClient power(parent());
  if (!power.is_valid()) {
    zxlogf(ERROR, "Failed to get power impl protocol\n");
    return ZX_ERR_NO_RESOURCES;
  }

  zx_status_t status = power.EnablePowerDomain(kVDLdoVGp1);
  if (status != ZX_OK) {
    zxlogf(ERROR, "%s: Failed to enable VGP1 regulator: %d\n", __FUNCTION__, status);
  }

  return status;
}

zx_status_t Mt8167::PowerInit() {
  static const pbus_mmio_t power_mmios[] = {{
      .base = MT8167_PMIC_WRAP_BASE,
      .length = MT8167_PMIC_WRAP_SIZE,
  }};
  static const power_domain_t power_domains[] = {
      {kVDLdoVGp2},  // Display Panel
  };
  static const pbus_metadata_t power_metadata[] = {
      {
          .type = DEVICE_METADATA_POWER_DOMAINS,
          .data_buffer = &power_domains,
          .data_size = sizeof(power_domains),
      },
  };

  pbus_dev_t power_dev = {};
  power_dev.name = "power";
  power_dev.vid = PDEV_VID_MEDIATEK;
  power_dev.did = PDEV_DID_MEDIATEK_POWER;
  power_dev.mmio_list = power_mmios;
  power_dev.mmio_count = countof(power_mmios);
  power_dev.metadata_list = power_metadata;
  power_dev.metadata_count = countof(power_metadata);

  zx_status_t status = pbus_.ProtocolDeviceAdd(ZX_PROTOCOL_POWER_IMPL, &power_dev);
  if (status != ZX_OK) {
    zxlogf(ERROR, "%s: Adding power device failed %d\n", __FUNCTION__, status);
    return status;
  }

  // Vgp1Enable() must be called before ThermalInit() as it uses the PMIC wrapper to enable the
  // VGP1 regulator.
  return Vgp1Enable();
}

}  // namespace board_mt8167