From 29a4d4d74b512e450a7d2ae97d4222c24a13b87e Mon Sep 17 00:00:00 2001
From: Dmitry Shmidt <dimitrysh@google.com>
Date: Tue, 19 Jul 2011 15:59:13 -0700
Subject: wifi: Add wifi_change_fw_path()

Change-Id: I1c4afe43457a295c0ffe0a865c6c331109dce614
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
---
 wifi/Android.mk |  3 +++
 wifi/wifi.c     | 26 ++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

(limited to 'wifi')

diff --git a/wifi/Android.mk b/wifi/Android.mk
index 8455d26..b4a6a7c 100644
--- a/wifi/Android.mk
+++ b/wifi/Android.mk
@@ -24,6 +24,9 @@ endif
 ifdef WIFI_DRIVER_FW_PATH_P2P
 LOCAL_CFLAGS += -DWIFI_DRIVER_FW_PATH_P2P=\"$(WIFI_DRIVER_FW_PATH_P2P)\"
 endif
+ifdef WIFI_DRIVER_FW_PATH_PARAM
+LOCAL_CFLAGS += -DWIFI_DRIVER_FW_PATH_PARAM=\"$(WIFI_DRIVER_FW_PATH_PARAM)\"
+endif
 
 LOCAL_SRC_FILES += wifi/wifi.c
 
diff --git a/wifi/wifi.c b/wifi/wifi.c
index 2591a23..fda81be 100644
--- a/wifi/wifi.c
+++ b/wifi/wifi.c
@@ -67,6 +67,10 @@ static char iface[PROPERTY_VALUE_MAX];
 #define WIFI_DRIVER_FW_PATH_P2P		NULL
 #endif
 
+#ifndef WIFI_DRIVER_FW_PATH_PARAM
+#define WIFI_DRIVER_FW_PATH_PARAM	"/sys/module/wlan/parameters/fwpath"
+#endif
+
 #define WIFI_DRIVER_LOADER_DELAY	1000000
 
 static const char IFACE_DIR[]           = "/data/system/wpa_supplicant";
@@ -627,3 +631,25 @@ const char *wifi_get_fw_path(int fw_type)
     }
     return NULL;
 }
+
+int wifi_change_fw_path(const char *fwpath)
+{
+    int len;
+    int fd;
+    int ret = 0;
+
+    if (!fwpath)
+        return ret;
+    fd = open(WIFI_DRIVER_FW_PATH_PARAM, O_WRONLY);
+    if (fd < 0) {
+        LOGE("Failed to open wlan fw path param (%s)", strerror(errno));
+        return -1;
+    }
+    len = strlen(fwpath) + 1;
+    if (write(fd, fwpath, len) != len) {
+        LOGE("Failed to write wlan fw path param (%s)", strerror(errno));
+        ret = -1;
+    }
+    close(fd);
+    return ret;
+}
-- 
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