/* * Copyright (C) 2011 The Android Open Source Project * * 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. */ #include <errno.h> #include <string.h> #include <hardware/hardware.h> #include <hardware/nfc.h> static uint8_t pn544_eedata_settings[][4] = { // DIFFERENTIAL_ANTENNA // RF Settings {0x00,0x9B,0xD1,0x0D} // Tx consumption higher than 0x0D (average 50mA) ,{0x00,0x9B,0xD2,0x24} // GSP setting for this threshold ,{0x00,0x9B,0xD3,0x0A} // Tx consumption higher than 0x0A (average 40mA) ,{0x00,0x9B,0xD4,0x22} // GSP setting for this threshold ,{0x00,0x9B,0xD5,0x08} // Tx consumption higher than 0x08 (average 30mA) ,{0x00,0x9B,0xD6,0x1E} // GSP setting for this threshold ,{0x00,0x9B,0xDD,0x1C} // GSP setting for this threshold ,{0x00,0x9B,0x84,0x13} // ANACM2 setting #ifdef maguro // Maguro load modulation settings ,{0x00,0x99,0x29,0xF4} // Type A load modulation amplitude fine tuning ,{0x00,0x99,0x2A,0xF4} // Type B load modulation amplitude fine tuning ,{0x00,0x99,0x2B,0xF4} // Type B' load modulation amplitude fine tuning ,{0x00,0x99,0x85,0xF1} // Type Felica load modulation amplitude fine tuning #endif #ifdef toro // Toro load modulation settings ,{0x00,0x99,0x29,0xF3} // Type A load modulation amplitude fine tuning ,{0x00,0x99,0x2A,0xF3} // Type B load modulation amplitude fine tuning ,{0x00,0x99,0x2B,0xF3} // Type B' load modulation amplitude fine tuning ,{0x00,0x99,0x85,0xF1} // Type Felica load modulation amplitude fine tuning #endif // For tuna we don't override load modulation settings. // Enable PBTF ,{0x00,0x98,0x00,0x3F} // SECURE_ELEMENT_CONFIGURATION - No Secure Element ,{0x00,0x9F,0x09,0x00} // SWP_PBTF_RFU ,{0x00,0x9F,0x0A,0x05} // SWP_PBTF_RFLD --> RFLEVEL Detector for PBTF ,{0x00,0x9E,0xD1,0xA1} // // Change RF Level Detector ANARFLDWU ,{0x00,0x99,0x23,0x00} // Default Value is 0x01 // Low-power polling ,{0x00,0x9E,0x74,0xB0} // Default Value is 0x00, bits 0->2: sensitivity (0==max, 6==min), // bit 3: RFU, // bits 4,5 hybrid low-power: # of low-power polls per regular poll // bit 6: RFU // bit 7: (0 -> disabled, 1 -> enabled) ,{0x00,0x9E,0x7D,0xB0} // bits 0->3: RFU, // bits 4,5: # retries after low power detection // 0=1 retry, 1=2 retry, 2=3 retry, 3=4 retry // bit 6: RFU, // bit 7: Enable or disable retry mechanism (0: disable, 1: enable) ,{0x00,0x9F,0x28,0x01} // bits 0->7: # of measurements per low-power poll // Polling Loop - Card Emulation Timeout ,{0x00,0x9F,0x35,0x14} // Time for which PN544 stays in Card Emulation mode after leaving RF field ,{0x00,0x9F,0x36,0x60} // Default value 0x0411 = 50 ms ---> New Value : 0x1460 = 250 ms //LLC Timer ,{0x00,0x9C,0x31,0x00} // Guard host time-out in ms (MSB) ,{0x00,0x9C,0x32,0xC8} // Guard host time-out in ms (LSB) ,{0x00,0x9C,0x19,0x40} // Max RX retry (PN544=>host?) ,{0x00,0x9C,0x1A,0x40} // Max TX retry (PN544=>host?) ,{0x00,0x9C,0x0C,0x00} // ,{0x00,0x9C,0x0D,0x00} // ,{0x00,0x9C,0x12,0x00} // ,{0x00,0x9C,0x13,0x00} // // NFC-DEP Target Waiting Time (WT) ,{0x00,0x98,0xA2,0x08} // Set to 0x08 as required by [digital] (default value: 09) //SE GPIO ,{0x00, 0x98, 0x93, 0x40} // Set NFCT ATQA ,{0x00, 0x98, 0x7D, 0x02} ,{0x00, 0x98, 0x7E, 0x00} // Enable CEA detection mechanism ,{0x00, 0x9F, 0xC8, 0x01} // Set NFC-F poll RC=0x00 ,{0x00, 0x9F, 0x9A, 0x00} // Setting for EMD support for ISO 14443-4 Reader ,{0x00,0x9F,0x09,0x00} // 0x00 - Disable EMD support, 0x01 - Enable EMD support }; static int pn544_close(hw_device_t *dev) { free(dev); return 0; } /* * Generic device handling */ static int nfc_open(const hw_module_t* module, const char* name, hw_device_t** device) { if (strcmp(name, NFC_PN544_CONTROLLER) == 0) { nfc_pn544_device_t *dev = calloc(1, sizeof(nfc_pn544_device_t)); dev->common.tag = HARDWARE_DEVICE_TAG; dev->common.version = 0; dev->common.module = (struct hw_module_t*) module; dev->common.close = pn544_close; dev->num_eeprom_settings = sizeof(pn544_eedata_settings) / 4; dev->eeprom_settings = (uint8_t*)pn544_eedata_settings; dev->linktype = PN544_LINK_TYPE_UART; dev->device_node = "/dev/ttyO3"; dev->enable_i2c_workaround = 0; *device = (hw_device_t*) dev; return 0; } else { return -EINVAL; } } static struct hw_module_methods_t nfc_module_methods = { .open = nfc_open, }; struct nfc_module_t HAL_MODULE_INFO_SYM = { .common = { .tag = HARDWARE_MODULE_TAG, .version_major = 1, .version_minor = 0, .id = NFC_HARDWARE_MODULE_ID, .name = "Tuna NFC HW HAL", .author = "The Android Open Source Project", .methods = &nfc_module_methods, }, };