From 52ffcd90d9da60151c4343bc25f272da65cf6b98 Mon Sep 17 00:00:00 2001
From: Nick Pelly <npelly@google.com>
Date: Wed, 3 Nov 2010 14:59:20 -0500
Subject: Increase hardware reset time.

VEN was pulled low for 7ms, as per data sheet, but pn544 not awlays reset.
Increase time.

Change-Id: I7de9e4fc94a0493605f706505962bdfab9d03666
Signed-off-by: Nick Pelly <npelly@google.com>
---
 Linux_x86/phDal4Nfc_i2c.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'Linux_x86')

diff --git a/Linux_x86/phDal4Nfc_i2c.c b/Linux_x86/phDal4Nfc_i2c.c
index 5e0b30b..4f18ffc 100644
--- a/Linux_x86/phDal4Nfc_i2c.c
+++ b/Linux_x86/phDal4Nfc_i2c.c
@@ -22,6 +22,9 @@
  *
  */
 
+#define LOG_TAG "NFC_i2c"
+#include <utils/Log.h>
+
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
@@ -244,6 +247,16 @@ int phDal4Nfc_i2c_reset(long level)
 
    ret = ioctl(gI2cPortContext.nHandle, PN544_SET_PWR, level);
 
+   /* HACK to increase reset time
+    * TODO: move this to kernel
+    */
+   if (level == 0) {
+       LOGW("sleeping a little longer...");
+       usleep(10000);
+   } else {
+       usleep(10000);
+   }
+
    return ret;
 }
 
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