NFC: HAL implementation for tuna.

Change-Id: I6452b5b5baeaebe9798b77e78ffbf318d6a05cd9

2 files changed, 157 insertions, 0 deletions

diff --git a/nfc/Android.mk b/nfc/Android.mk
new file mode 100644
index 0000000..000b5ae
--- /dev/null
+++ b/nfc/Android.mk
@@ -0,0 +1,25 @@
+# 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.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := nfc.tuna
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+LOCAL_SRC_FILES := nfc_hw.c
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/nfc/nfc_hw.c b/nfc/nfc_hw.c
new file mode 100644
index 0000000..4144218
--- /dev/null
+++ b/nfc/nfc_hw.c
@@ -0,0 +1,132 @@
+/*
+ * 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
+    ,{0x00,0x99,0x81,0x7F} // ANAVMID setting PCD
+    ,{0x00,0x99,0x31,0x70} // ANAVMID setting PICC
+
+    // 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,0x74,0xC0} // Default Value is 0x00, bits 0->2: sensitivity (0==max, 6==min),
+                           // bit 3: RFU,
+                           // bits 4->6 hybrid low-power: # of low-power polls per regular poll
+                           // bit 7: (0 -> disabled, 1 -> enabled)
+    ,{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} //
+
+    //WTX for LLCP communication
+    ,{0x00,0x98,0xA2,0x0E} // Max value: 14 (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,
+    },
+};