halimpl/bcm2079x/nfc_nci.c

/******************************************************************************
 *
 *  Copyright (C) 1999-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

#define LOG_TAG "NfcNciHal"
#include <errno.h>
#include <hardware/hardware.h>
#include <hardware/nfc.h>
#include <malloc.h>
#include <string.h>
#include "HalAdaptation.h"
#include "_OverrideLog.h"

/*********************************
 * NCI HAL method implementations.
 *********************************/

static int hal_open(const struct nfc_nci_device* p_dev,
                    nfc_stack_callback_t* p_hal_cback,
                    nfc_stack_data_callback_t* p_hal_data_callback) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiOpen(dev, p_hal_cback, p_hal_data_callback);
  return retval;
}

static int hal_write(const struct nfc_nci_device* p_dev, uint16_t data_len,
                     const uint8_t* p_data) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiWrite(dev, data_len, p_data);
  return retval;
}

static int hal_core_initialized(const struct nfc_nci_device* p_dev,
                                uint8_t* p_core_init_rsp_params) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiCoreInitialized(dev, p_core_init_rsp_params);
  return retval;
}

static int hal_pre_discover(const struct nfc_nci_device* p_dev) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiPreDiscover(dev);
  return retval;
}

static int hal_close(const struct nfc_nci_device* p_dev) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiClose(dev);
  return retval;
}

static int hal_control_granted(const struct nfc_nci_device* p_dev) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiControlGranted(dev);
  return retval;
}

static int hal_power_cycle(const struct nfc_nci_device* p_dev) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiPowerCycle(dev);
  return retval;
}

static int hal_get_max_nfcee(const struct nfc_nci_device* p_dev,
                             uint8_t* maxNfcee) {
  int retval = 0;
  bcm2079x_dev_t* dev = (bcm2079x_dev_t*)p_dev;

  retval = HaiGetMaxNfcee(dev, maxNfcee);
  return retval;
}

/*************************************
 * Generic device handling.
 *************************************/

/* Close an opened nfc device instance */
static int nfc_close(hw_device_t* dev) {
  int retval = 0;
  free(dev);
  retval = HaiTerminateLibrary();
  return retval;
}

static int nfc_open(const hw_module_t* module, const char* name,
                    hw_device_t** device) {
  ALOGD("%s: enter; name=%s", __func__, name);
  int retval = 0;  // 0 is ok; -1 is error

  if (strcmp(name, NFC_NCI_CONTROLLER) == 0) {
    bcm2079x_dev_t* dev = calloc(1, sizeof(bcm2079x_dev_t));

    // Common hw_device_t fields
    dev->nci_device.common.tag = HARDWARE_DEVICE_TAG;
    dev->nci_device.common.version = 0x00010000;  // [31:16] major, [15:0] minor
    dev->nci_device.common.module = (struct hw_module_t*)module;
    dev->nci_device.common.close = nfc_close;

    // NCI HAL method pointers
    dev->nci_device.open = hal_open;
    dev->nci_device.write = hal_write;
    dev->nci_device.core_initialized = hal_core_initialized;
    dev->nci_device.pre_discover = hal_pre_discover;
    dev->nci_device.close = hal_close;
    dev->nci_device.control_granted = hal_control_granted;
    dev->nci_device.power_cycle = hal_power_cycle;
    // dev->nci_device.get_max_ee = hal_get_max_nfcee;

    // Copy in
    *device = (hw_device_t*)dev;

    retval = HaiInitializeLibrary(dev);
  } else {
    retval = -EINVAL;
  }
  ALOGD("%s: exit %d", __func__, retval);
  return retval;
}

static struct hw_module_methods_t nfc_module_methods = {
    .open = nfc_open,
};

struct nfc_nci_module_t HAL_MODULE_INFO_SYM = {
    .common =
        {
            .tag = HARDWARE_MODULE_TAG,
            .module_api_version = 0x0100,  // [15:8] major, [7:0] minor (1.0)
            .hal_api_version = 0x00,       // 0 is only valid value
            .id = NFC_NCI_BCM2079X_HARDWARE_MODULE_ID,
            .name = "BCM2079x NFC NCI HW HAL",
            .author = "Broadcom Corporation",
            .methods = &nfc_module_methods,
        },
};