/*
 * Copyright (c) 2015 South Silicon Valley Microelectronics Inc.
 * Copyright (c) 2015 iComm Corporation
 *
 * This program is free software: you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version.
 * 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.
 * You should have received a copy of the GNU General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <linux/irq.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/gpio.h>
#include <linux/mmc/host.h>
#include <linux/delay.h>
#include <linux/regulator/consumer.h>
#include <linux/semaphore.h>
#include <asm/io.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
#include <linux/printk.h>
#include <linux/err.h>
#else
#include <config/printk.h>
#endif
extern void sdio_reinit(void);
extern void extern_wifi_set_enable(int is_on);
extern int ssv6xxx_get_dev_status(void);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
extern int wifi_setup_dt(void);
#endif
#define GPIO_REG_WRITEL(val,reg) \
 do { \
  __raw_writel(val, CTL_PIN_BASE + (reg)); \
 } while (0)
struct semaphore icomm_chipup_sem;
static int g_wifidev_registered = 0;
char ssvcabrio_fw_name[50] = "ssv6051-sw.bin";
extern int ssvdevice_init(void);
extern void ssvdevice_exit(void);
#ifdef CONFIG_SSV_SUPPORT_AES_ASM
extern int aes_init(void);
extern void aes_fini(void);
extern int sha1_mod_init(void);
extern void sha1_mod_fini(void);
#endif
void ssv_wifi_power(void)
{
 extern_wifi_set_enable(0);
 mdelay(150);
 extern_wifi_set_enable(1);
 mdelay(150);
 sdio_reinit();
 mdelay(150);
}
int initWlan(void)
{
 int ret = 0;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
 if (wifi_setup_dt()) {
  printk("wifi_dt : fail to setup dt\n");
  goto fail;
 }
#endif
 ssv_wifi_power();
 g_wifidev_registered = 1;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
fail:
#endif
 up(&icomm_chipup_sem);
 return ret;
}
void exitWlan(void)
{
 if (g_wifidev_registered) {
  ssvdevice_exit();
  extern_wifi_set_enable(0);
  g_wifidev_registered = 0;
  mdelay(150);
 }
 return;
}
static __init int generic_wifi_init_module(void)
{
 int ret, time = 5;
 printk("%s\n", __func__);
 sema_init(&icomm_chipup_sem, 0);
#ifdef CONFIG_SSV_SUPPORT_AES_ASM
 sha1_mod_init();
 aes_init();
#endif
 ret = initWlan();
 if (down_timeout(&icomm_chipup_sem, msecs_to_jiffies(1000)) != 0) {
  ret = -EINVAL;
  printk(KERN_ALERT "%s: platform_driver_register timeout\n",
         __FUNCTION__);
  goto out;
 }
 ret = ssvdevice_init();
 while(time-- > 0){
  mdelay(500);
  if(ssv6xxx_get_dev_status() == 1)
   break;
  printk("%s : Retry to carddetect\n",__func__);
  ssv_wifi_power();
 }
out:
 printk("generic_wifi_init finished\n");
 return ret;
}
static __exit void generic_wifi_exit_module(void)
{
 printk("%s\n", __func__);
#ifdef CONFIG_SSV_SUPPORT_AES_ASM
 aes_fini();
 sha1_mod_fini();
#endif
 exitWlan();
}
EXPORT_SYMBOL(generic_wifi_init_module);
EXPORT_SYMBOL(generic_wifi_exit_module);
module_init(generic_wifi_init_module);
module_exit(generic_wifi_exit_module);
MODULE_LICENSE("Dual BSD/GPL");