1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/htc_wifi_nvs.c b/arch/arm/mach-msm/htc_wifi_nvs.c
new file mode 100644
index 000000000000..95b8c3bbae9d
--- /dev/null
+++ b/arch/arm/mach-msm/htc_wifi_nvs.c
@@ -0,0 +1,56 @@
+/* arch/arm/mach-msm/htc_wifi_nvs.c
+ *
+ * Code to extract WiFi calibration information from ATAG set up 
+ * by the bootloader.
+ *
+ * Copyright (C) 2008 Google, Inc.
+ * Author: Dmitry Shmidt <dimitrysh@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/setup.h>
+
+/* configuration tags specific to msm */
+#define ATAG_MSM_WIFI	0x57494649 /* MSM WiFi */
+
+#define MAX_NVS_SIZE	0x800U
+static unsigned char wifi_nvs_ram[MAX_NVS_SIZE];
+
+unsigned char *get_wifi_nvs_ram( void )
+{
+	return( wifi_nvs_ram );
+}
+EXPORT_SYMBOL(get_wifi_nvs_ram);
+
+static int __init parse_tag_msm_wifi(const struct tag *tag)
+{
+	unsigned char *dptr = (unsigned char *)(&tag->u);
+	unsigned size;
+	
+	size = min((tag->hdr.size - 2) * sizeof(__u32), MAX_NVS_SIZE);
+#ifdef ATAG_MSM_WIFI_DEBUG	
+	unsigned i;
+	
+	printk("WiFi Data size = %d , 0x%x\n", tag->hdr.size, tag->hdr.tag);
+	for(i=0;( i < size );i++) {
+		printk("%02x ", *dptr++);
+	}
+#endif	
+	memcpy( (void *)wifi_nvs_ram, (void *)dptr, size );
+	return 0;
+}
+
+__tagtable(ATAG_MSM_WIFI, parse_tag_msm_wifi);