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/*
* Copyright (C) 2012-2014 NXP Semiconductors
*
* 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 "NxpNfcNciHal"
#include <errno.h>
#include <hardware/hardware.h>
#include <hardware/nfc.h>
#include <phNxpNciHal_Adaptation.h>
#include <stdlib.h>
#include <string.h>
#include <utils/Log.h>
/*****************************************************************************
* NXP NCI HAL Function implementations.
*****************************************************************************/
/*******************************************************************************
**
** Function hal_open
**
** Description It opens and initialzes the physical connection with NFCC.
**
** Returns 0 if successful
**
*******************************************************************************/
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;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_open(p_hal_cback, p_hal_data_callback);
return retval;
}
/*******************************************************************************
**
** Function hal_write
**
** Description Write the data to NFCC.
**
** Returns Number of bytes successfully written to NFCC.
**
*******************************************************************************/
static int hal_write(const struct nfc_nci_device* p_dev, uint16_t data_len,
const uint8_t* p_data) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_write(data_len, p_data);
return retval;
}
/*******************************************************************************
**
** Function hal_core_initialized
**
** Description Notify NFCC after successful initialization of NFCC.
** All proprietary settings can be done here.
**
** Returns 0 if successful
**
*******************************************************************************/
static int hal_core_initialized(const struct nfc_nci_device* p_dev,
uint8_t* p_core_init_rsp_params) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_core_initialized(p_core_init_rsp_params);
return retval;
}
/*******************************************************************************
**
** Function hal_pre_discover
**
** Description Notify NFCC before start discovery.
**
** Returns 0 if successful
**
*******************************************************************************/
static int hal_pre_discover(const struct nfc_nci_device* p_dev) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_pre_discover();
return retval;
}
/*******************************************************************************
**
** Function hal_close
**
** Description Close the NFCC interface and free all resources.
**
** Returns 0 if successful
**
*******************************************************************************/
static int hal_close(const struct nfc_nci_device* p_dev) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_close();
return retval;
}
/*******************************************************************************
**
** Function hal_control_granted
**
** Description Notify NFCC that control is granted to HAL.
**
** Returns 0 if successful
**
*******************************************************************************/
static int hal_control_granted(const struct nfc_nci_device* p_dev) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_control_granted();
return retval;
}
/*******************************************************************************
**
** Function hal_power_cycle
**
** Description Notify power cycling has performed.
**
** Returns 0 if successful
**
*******************************************************************************/
static int hal_power_cycle(const struct nfc_nci_device* p_dev) {
int retval = 0;
pn547_dev_t* dev = (pn547_dev_t*)p_dev;
retval = phNxpNciHal_power_cycle();
return retval;
}
/*************************************
* Generic device handling.
*************************************/
/*******************************************************************************
**
** Function nfc_close
**
** Description Close the nfc device instance.
**
** Returns 0 if successful
**
*******************************************************************************/
static int nfc_close(hw_device_t* dev) {
int retval = 0;
free(dev);
return retval;
}
/*******************************************************************************
**
** Function nfc_open
**
** Description Open the nfc device instance.
**
** Returns 0 if successful
**
*******************************************************************************/
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) {
pn547_dev_t* dev = calloc(1, sizeof(pn547_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;
*device = (hw_device_t*)dev;
} else {
retval = -EINVAL;
}
ALOGD("%s: exit %d", __func__, retval);
return retval;
}
/* Android hardware module definition */
static struct hw_module_methods_t nfc_module_methods = {
.open = nfc_open,
};
/* NFC module definition */
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_HARDWARE_MODULE_ID,
.name = "NXP PN54X NFC NCI HW HAL",
.author = "NXP Semiconductors",
.methods = &nfc_module_methods,
},
};
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