shinano-common: pn54x: Import from lineage-15.1

* https://github.com/LineageOS/android_system_nfc/tree/lineage-15.1/halimpl/pn54x/common
* support for pn54x has been dropped in lineage-16.0 and above

Change-Id: I19f2c3a6e3066bf9aaaaf4ddcd7d7ad867de0ed8

1 files changed, 315 insertions, 0 deletions

diff --git a/pn54x/tml/phTmlNfc_i2c.c b/pn54x/tml/phTmlNfc_i2c.c
new file mode 100644
index 0000000..781f19b
--- /dev/null
+++ b/pn54x/tml/phTmlNfc_i2c.c
@@ -0,0 +1,315 @@
+/*
+ * Copyright (C) 2010-2014 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.
+ */
+
+/*
+ * DAL I2C port implementation for linux
+ *
+ * Project: Trusted NFC Linux
+ *
+ */
+#include <errno.h>
+#include <fcntl.h>
+#include <hardware/nfc.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <phNfcStatus.h>
+#include <phNxpLog.h>
+#include <phTmlNfc_i2c.h>
+#include <string.h>
+#include "phNxpNciHal_utils.h"
+
+#define CRC_LEN 2
+#define NORMAL_MODE_HEADER_LEN 3
+#define FW_DNLD_HEADER_LEN 2
+#define FW_DNLD_LEN_OFFSET 1
+#define NORMAL_MODE_LEN_OFFSET 2
+#define FRAGMENTSIZE_MAX PHNFC_I2C_FRAGMENT_SIZE
+static bool_t bFwDnldFlag = false;
+extern phTmlNfc_i2cfragmentation_t fragmentation_enabled;
+
+/*******************************************************************************
+**
+** Function         phTmlNfc_i2c_close
+**
+** Description      Closes PN54X device
+**
+** Parameters       pDevHandle - device handle
+**
+** Returns          None
+**
+*******************************************************************************/
+void phTmlNfc_i2c_close(void* pDevHandle) {
+  if (NULL != pDevHandle) {
+    close((intptr_t)pDevHandle);
+  }
+
+  return;
+}
+
+/*******************************************************************************
+**
+** Function         phTmlNfc_i2c_open_and_configure
+**
+** Description      Open and configure PN54X device
+**
+** Parameters       pConfig     - hardware information
+**                  pLinkHandle - device handle
+**
+** Returns          NFC status:
+**                  NFCSTATUS_SUCCESS - open_and_configure operation success
+**                  NFCSTATUS_INVALID_DEVICE - device open operation failure
+**
+*******************************************************************************/
+NFCSTATUS phTmlNfc_i2c_open_and_configure(pphTmlNfc_Config_t pConfig,
+                                          void** pLinkHandle) {
+  int nHandle;
+
+  NXPLOG_TML_D("Opening port=%s\n", pConfig->pDevName);
+  /* open port */
+  nHandle = open((const char*)pConfig->pDevName, O_RDWR);
+  if (nHandle < 0) {
+    NXPLOG_TML_E("_i2c_open() Failed: retval %x", nHandle);
+    *pLinkHandle = NULL;
+    return NFCSTATUS_INVALID_DEVICE;
+  }
+
+  *pLinkHandle = (void*)((intptr_t)nHandle);
+
+  /*Reset PN54X*/
+  phTmlNfc_i2c_reset((void*)((intptr_t)nHandle), 0);
+  usleep(10 * 1000);
+  phTmlNfc_i2c_reset((void*)((intptr_t)nHandle), 1);
+
+  return NFCSTATUS_SUCCESS;
+}
+
+/*******************************************************************************
+**
+** Function         phTmlNfc_i2c_read
+**
+** Description      Reads requested number of bytes from PN54X device into given
+**                  buffer
+**
+** Parameters       pDevHandle       - valid device handle
+**                  pBuffer          - buffer for read data
+**                  nNbBytesToRead   - number of bytes requested to be read
+**
+** Returns          numRead   - number of successfully read bytes
+**                  -1        - read operation failure
+**
+*******************************************************************************/
+int phTmlNfc_i2c_read(void* pDevHandle, uint8_t* pBuffer, int nNbBytesToRead) {
+  int ret_Read;
+  int ret_Select;
+  int numRead = 0;
+  struct timeval tv;
+  fd_set rfds;
+  uint16_t totalBtyesToRead = 0;
+
+  int i;
+  UNUSED(nNbBytesToRead);
+  if (NULL == pDevHandle) {
+    return -1;
+  }
+
+  if (bFwDnldFlag == false) {
+    totalBtyesToRead = NORMAL_MODE_HEADER_LEN;
+  } else {
+    totalBtyesToRead = FW_DNLD_HEADER_LEN;
+  }
+
+  /* Read with 2 second timeout, so that the read thread can be aborted
+     when the PN54X does not respond and we need to switch to FW download
+     mode. This should be done via a control socket instead. */
+  FD_ZERO(&rfds);
+  FD_SET((intptr_t)pDevHandle, &rfds);
+  tv.tv_sec = 2;
+  tv.tv_usec = 1;
+
+  ret_Select =
+      select((int)((intptr_t)pDevHandle + (int)1), &rfds, NULL, NULL, &tv);
+  if (ret_Select < 0) {
+    NXPLOG_TML_E("i2c select() errno : %x", errno);
+    return -1;
+  } else if (ret_Select == 0) {
+    NXPLOG_TML_E("i2c select() Timeout");
+    return -1;
+  } else {
+    ret_Read = read((intptr_t)pDevHandle, pBuffer, totalBtyesToRead - numRead);
+    if (ret_Read > 0) {
+      numRead += ret_Read;
+    } else if (ret_Read == 0) {
+      NXPLOG_TML_E("_i2c_read() [hdr]EOF");
+      return -1;
+    } else {
+      NXPLOG_TML_E("_i2c_read() [hdr] errno : %x", errno);
+      return -1;
+    }
+
+    if (bFwDnldFlag == false) {
+      totalBtyesToRead = NORMAL_MODE_HEADER_LEN;
+    } else {
+      totalBtyesToRead = FW_DNLD_HEADER_LEN;
+    }
+
+    if (numRead < totalBtyesToRead) {
+      ret_Read =
+          read((intptr_t)pDevHandle, pBuffer, totalBtyesToRead - numRead);
+      if (ret_Read != totalBtyesToRead - numRead) {
+        NXPLOG_TML_E("_i2c_read() [hdr] errno : %x", errno);
+        return -1;
+      } else {
+        numRead += ret_Read;
+      }
+    }
+    if (bFwDnldFlag == true) {
+      totalBtyesToRead =
+          pBuffer[FW_DNLD_LEN_OFFSET] + FW_DNLD_HEADER_LEN + CRC_LEN;
+    } else {
+      totalBtyesToRead =
+          pBuffer[NORMAL_MODE_LEN_OFFSET] + NORMAL_MODE_HEADER_LEN;
+    }
+    if ((totalBtyesToRead - numRead) != 0) {
+      ret_Read = read((intptr_t)pDevHandle, (pBuffer + numRead),
+                      totalBtyesToRead - numRead);
+      if (ret_Read > 0) {
+        numRead += ret_Read;
+      } else if (ret_Read == 0) {
+        NXPLOG_TML_E("_i2c_read() [pyld] EOF");
+        return -1;
+      } else {
+        if (bFwDnldFlag == false) {
+          NXPLOG_TML_E("_i2c_read() [hdr] received");
+          phNxpNciHal_print_packet("RECV", pBuffer, NORMAL_MODE_HEADER_LEN);
+        }
+        NXPLOG_TML_E("_i2c_read() [pyld] errno : %x", errno);
+        return -1;
+      }
+    } else {
+      NXPLOG_TML_E("_>>>>> Empty packet recieved !!");
+    }
+  }
+  return numRead;
+}
+
+/*******************************************************************************
+**
+** Function         phTmlNfc_i2c_write
+**
+** Description      Writes requested number of bytes from given buffer into
+**                  PN54X device
+**
+** Parameters       pDevHandle       - valid device handle
+**                  pBuffer          - buffer for read data
+**                  nNbBytesToWrite  - number of bytes requested to be written
+**
+** Returns          numWrote   - number of successfully written bytes
+**                  -1         - write operation failure
+**
+*******************************************************************************/
+int phTmlNfc_i2c_write(void* pDevHandle, uint8_t* pBuffer,
+                       int nNbBytesToWrite) {
+  int ret;
+  int numWrote = 0;
+  int i;
+  int numBytes = nNbBytesToWrite;
+  if (NULL == pDevHandle) {
+    return -1;
+  }
+  if (fragmentation_enabled == I2C_FRAGMENATATION_DISABLED &&
+      nNbBytesToWrite > FRAGMENTSIZE_MAX) {
+    NXPLOG_TML_E(
+        "i2c_write() data larger than maximum I2C  size,enable I2C "
+        "fragmentation");
+    return -1;
+  }
+  while (numWrote < nNbBytesToWrite) {
+    if (fragmentation_enabled == I2C_FRAGMENTATION_ENABLED &&
+        nNbBytesToWrite > FRAGMENTSIZE_MAX) {
+      if (nNbBytesToWrite - numWrote > FRAGMENTSIZE_MAX) {
+        numBytes = numWrote + FRAGMENTSIZE_MAX;
+      } else {
+        numBytes = nNbBytesToWrite;
+      }
+    }
+    ret = write((intptr_t)pDevHandle, pBuffer + numWrote, numBytes - numWrote);
+    if (ret > 0) {
+      numWrote += ret;
+      if (fragmentation_enabled == I2C_FRAGMENTATION_ENABLED &&
+          numWrote < nNbBytesToWrite) {
+        usleep(500);
+      }
+    } else if (ret == 0) {
+      NXPLOG_TML_E("_i2c_write() EOF");
+      return -1;
+    } else {
+      NXPLOG_TML_E("_i2c_write() errno : %x", errno);
+      if (errno == EINTR || errno == EAGAIN) {
+        continue;
+      }
+      return -1;
+    }
+  }
+
+  return numWrote;
+}
+
+/*******************************************************************************
+**
+** Function         phTmlNfc_i2c_reset
+**
+** Description      Reset PN54X device, using VEN pin
+**
+** Parameters       pDevHandle     - valid device handle
+**                  level          - reset level
+**
+** Returns           0   - reset operation success
+**                  -1   - reset operation failure
+**
+*******************************************************************************/
+#define PN544_SET_PWR _IOW(0xe9, 0x01, unsigned int)
+int phTmlNfc_i2c_reset(void* pDevHandle, long level) {
+  int ret;
+  NXPLOG_TML_D("phTmlNfc_i2c_reset(), VEN level %ld", level);
+
+  if (NULL == pDevHandle) {
+    return -1;
+  }
+
+  ret = ioctl((intptr_t)pDevHandle, PN544_SET_PWR, level);
+  if (level == 2 && ret == 0) {
+    bFwDnldFlag = true;
+  } else {
+    bFwDnldFlag = false;
+  }
+  return ret;
+}
+
+/*******************************************************************************
+**
+** Function         getDownloadFlag
+**
+** Description      Returns the current mode
+**
+** Parameters       none
+**
+** Returns           Current mode download/NCI
+*******************************************************************************/
+bool_t getDownloadFlag(void) { return bFwDnldFlag; }