| /****************************************************************************** |
| * |
| * Copyright (C) 1999-2012 Broadcom Corporation |
| * Copyright (C) 2013 ST Microelectronics S.A. |
| * |
| * 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. |
| * |
| * Modified by ST Microelectronics S.A. (adaptation of nfc_nci.c for ST21NFC |
| *NCI version) |
| * |
| ******************************************************************************/ |
| |
| #include <cutils/properties.h> |
| #include <errno.h> |
| #include <hardware/nfc.h> |
| #include <string.h> |
| #include <pthread.h> |
| |
| #include "android_logmsg.h" |
| #include "halcore.h" |
| |
| extern void HalCoreCallback(void* context, uint32_t event, const void* d, |
| size_t length); |
| extern bool I2cOpenLayer(void* dev, HAL_CALLBACK callb, HALHANDLE* pHandle); |
| |
| |
| typedef struct { |
| struct nfc_nci_device nci_device; // nci_device must be first struct member |
| // below declarations are private variables within HAL |
| nfc_stack_callback_t* p_cback; |
| nfc_stack_data_callback_t* p_data_cback; |
| HALHANDLE hHAL; |
| } st21nfc_dev_t; |
| |
| char* halVersion = "ST21NFC NCI Version 3.0.5"; |
| uint8_t cmd_set_nfc_mode_enable[] = {0x2f, 0x02, 0x02, 0x02, 0x01}; |
| uint8_t hal_is_closed = 1; |
| pthread_mutex_t hal_mtx = PTHREAD_MUTEX_INITIALIZER; |
| |
| uint8_t hal_dta_state = 0; |
| |
| |
| /* |
| * NCI HAL method implementations. These must be overridden |
| */ |
| |
| extern bool hal_wrapper_open(st21nfc_dev_t* dev, nfc_stack_callback_t* p_cback, |
| nfc_stack_data_callback_t* p_data_cback, |
| HALHANDLE* pHandle); |
| |
| extern int hal_wrapper_close(int call_cb); |
| |
| static int hal_open(const struct nfc_nci_device* p_dev, |
| nfc_stack_callback_t* p_cback, |
| nfc_stack_data_callback_t* p_data_cback) { |
| bool result = false; |
| |
| STLOG_HAL_D("NFC-NCI HAL: %s %s", __func__, halVersion); |
| |
| (void)pthread_mutex_lock(&hal_mtx); |
| st21nfc_dev_t* dev = (st21nfc_dev_t*)p_dev; |
| if (! hal_is_closed ) { |
| hal_wrapper_close(0); |
| } |
| dev->p_cback = p_cback; |
| dev->p_data_cback = p_data_cback; |
| |
| hal_dta_state = 0; |
| |
| result = hal_wrapper_open(dev, p_cback, p_data_cback, &dev->hHAL); |
| |
| if (!result || !dev->hHAL) |
| { |
| dev->p_cback(HAL_NFC_OPEN_CPLT_EVT, HAL_NFC_STATUS_FAILED); |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return -1; // We are doomed, stop it here, NOW ! |
| } |
| hal_is_closed = 0; |
| (void)pthread_mutex_unlock(&hal_mtx); |
| return 0; |
| } |
| |
| static int hal_write(const struct nfc_nci_device* p_dev, uint16_t data_len, |
| const uint8_t* p_data) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| st21nfc_dev_t* dev = (st21nfc_dev_t*)p_dev; |
| |
| /* check if HAL is closed */ |
| int ret = (int)data_len; |
| (void) pthread_mutex_lock(&hal_mtx); |
| if (hal_is_closed) |
| { |
| ret = 0; |
| } |
| |
| if (!ret) |
| { |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return ret; |
| } |
| if (!HalSendDownstream(dev->hHAL, p_data, data_len)) |
| { |
| STLOG_HAL_E("NFC-NCI HAL: %s SendDownstream failed", __func__); |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return 0; |
| } |
| (void) pthread_mutex_unlock(&hal_mtx); |
| |
| return ret; |
| } |
| |
| static int hal_core_initialized(const struct nfc_nci_device* p_dev, |
| uint8_t* p_core_init_rsp_params) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| (void)pthread_mutex_lock(&hal_mtx); |
| st21nfc_dev_t* dev = (st21nfc_dev_t*)p_dev; |
| hal_dta_state = *p_core_init_rsp_params; |
| dev->p_cback(HAL_NFC_POST_INIT_CPLT_EVT, HAL_NFC_STATUS_OK); |
| (void) pthread_mutex_unlock(&hal_mtx); |
| |
| return 0; // return != 0 to signal ready immediate |
| } |
| |
| static int hal_pre_discover(__attribute__((unused)) const struct nfc_nci_device* p_dev) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| return 0; // false if no vendor-specific pre-discovery actions are needed |
| } |
| |
| static int hal_close(__attribute__((unused)) const struct nfc_nci_device* p_dev) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| /* check if HAL is closed */ |
| (void)pthread_mutex_lock(&hal_mtx); |
| if ( hal_is_closed ) { |
| (void)pthread_mutex_unlock(&hal_mtx); |
| return 1; |
| } |
| if (hal_wrapper_close(1) == 0) { |
| hal_is_closed = 1; |
| (void)pthread_mutex_unlock(&hal_mtx); |
| return 1; |
| } |
| hal_is_closed = 1; |
| (void)pthread_mutex_unlock(&hal_mtx); |
| |
| hal_dta_state = 0; |
| |
| return 0; |
| } |
| |
| static int hal_control_granted(__attribute__((unused)) const struct nfc_nci_device* p_dev) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| return 0; |
| } |
| |
| static int hal_power_cycle(const struct nfc_nci_device* p_dev) { |
| STLOG_HAL_D("NFC-NCI HAL: %s", __func__); |
| |
| st21nfc_dev_t* dev = (st21nfc_dev_t*)p_dev; |
| |
| /* check if HAL is closed */ |
| int ret = HAL_NFC_STATUS_OK; |
| (void) pthread_mutex_lock(&hal_mtx); |
| if (hal_is_closed) |
| { |
| ret = HAL_NFC_STATUS_FAILED; |
| } |
| |
| if (ret != HAL_NFC_STATUS_OK) |
| { |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return ret; |
| } |
| dev->p_cback(HAL_NFC_OPEN_CPLT_EVT, HAL_NFC_STATUS_OK); |
| |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return HAL_NFC_STATUS_OK; |
| } |
| |
| /* |
| * Generic device handling below |
| */ |
| |
| /* Close an opened nfc device instance */ |
| static int nfc_close(hw_device_t* dev) { |
| (void) pthread_mutex_lock(&hal_mtx); |
| free(dev); |
| (void) pthread_mutex_unlock(&hal_mtx); |
| return 0; |
| } |
| |
| static int nfc_open(const hw_module_t* module, const char* name, |
| hw_device_t** device) { |
| |
| if (strcmp(name, NFC_NCI_CONTROLLER) == 0) { |
| st21nfc_dev_t* dev = calloc(1, sizeof(st21nfc_dev_t)); |
| |
| 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; |
| |
| // Initialize and get global logging level |
| InitializeSTLogLevel(); |
| |
| return 0; |
| } else { |
| return -EINVAL; |
| } |
| } |
| |
| 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.st21nfc", |
| .name = "ST Micro ST21NFC NCI HW HAL", |
| .author = "ST Microelectronics SA ", |
| .methods = &nfc_module_methods, |
| }, |
| }; |