/*
   * Copyright STMicroelectronics, 2007.
   *
   *  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 2 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, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  #include <linux/types.h>
  #include <linux/init.h>
  #include <linux/device.h>

  #include <linux/amba/bus.h>

  #include <linux/platform_device.h>

  #include <linux/io.h>

  #include <plat/gpio-nomadik.h>

  #include <mach/hardware.h>
  #include <mach/irqs.h>
  #include <asm/mach/map.h>
  #include <asm/hardware/vic.h>

  #include <asm/cacheflush.h>
  #include <asm/hardware/cache-l2x0.h>

  #include "clock.h"

  #include "cpu-8815.h"

  #define __MEM_4K_RESOURCE(x) \
  	.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}

  /* The 8815 has 4 GPIO blocks, let's register them immediately */

  
  #define GPIO_RESOURCE(block)						\
  	{								\
  		.start	= NOMADIK_GPIO##block##_BASE,			\
  		.end	= NOMADIK_GPIO##block##_BASE + SZ_4K - 1,	\
  		.flags	= IORESOURCE_MEM,				\
  	},								\
  	{								\
  		.start	= IRQ_GPIO##block,				\
  		.end	= IRQ_GPIO##block,				\
  		.flags	= IORESOURCE_IRQ,				\
  	}
  
  #define GPIO_DEVICE(block)						\
  	{								\
  		.name 		= "gpio",				\
  		.id		= block,				\
  		.num_resources 	= 2,					\
  		.resource	= &cpu8815_gpio_resources[block * 2],	\
  		.dev = {						\
  			.platform_data = &cpu8815_gpio[block],		\
  		},							\
  	}

  static struct nmk_gpio_platform_data cpu8815_gpio[] = {
  	{
  		.name = "GPIO-0-31",
  		.first_gpio = 0,
  		.first_irq = NOMADIK_GPIO_TO_IRQ(0),

  	}, {
  		.name = "GPIO-32-63",
  		.first_gpio = 32,
  		.first_irq = NOMADIK_GPIO_TO_IRQ(32),

  	}, {
  		.name = "GPIO-64-95",
  		.first_gpio = 64,
  		.first_irq = NOMADIK_GPIO_TO_IRQ(64),

  	}, {
  		.name = "GPIO-96-127", /* 124..127 not routed to pin */
  		.first_gpio = 96,
  		.first_irq = NOMADIK_GPIO_TO_IRQ(96),

  	}
  };

  static struct resource cpu8815_gpio_resources[] = {
  	GPIO_RESOURCE(0),
  	GPIO_RESOURCE(1),
  	GPIO_RESOURCE(2),
  	GPIO_RESOURCE(3),
  };

  static struct platform_device cpu8815_platform_gpio[] = {
  	GPIO_DEVICE(0),
  	GPIO_DEVICE(1),
  	GPIO_DEVICE(2),
  	GPIO_DEVICE(3),

  };

  static struct amba_device cpu8815_amba_rng = {
  	.dev = {
  		.init_name = "rng",
  	},
  	__MEM_4K_RESOURCE(NOMADIK_RNG_BASE),
  };

  static struct platform_device *platform_devs[] __initdata = {
  	cpu8815_platform_gpio + 0,
  	cpu8815_platform_gpio + 1,
  	cpu8815_platform_gpio + 2,
  	cpu8815_platform_gpio + 3,
  };

  static struct amba_device *amba_devs[] __initdata = {

  	&cpu8815_amba_rng

  };
  
  static int __init cpu8815_init(void)
  {
  	int i;

  	platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));

  	for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
  		amba_device_register(amba_devs[i], &iomem_resource);
  	return 0;
  }
  arch_initcall(cpu8815_init);

  /* All SoC devices live in the same area (see hardware.h) */
  static struct map_desc nomadik_io_desc[] __initdata = {
  	{
  		.virtual =	NOMADIK_IO_VIRTUAL,
  		.pfn =		__phys_to_pfn(NOMADIK_IO_PHYSICAL),
  		.length =	NOMADIK_IO_SIZE,
  		.type = 	MT_DEVICE,
  	}
  	/* static ram and secured ram may be added later */
  };
  
  void __init cpu8815_map_io(void)
  {
  	iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
  }
  
  void __init cpu8815_init_irq(void)
  {
  	/* This modified VIC cell has two register blocks, at 0 and 0x20 */
  	vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START +  0, ~0, 0);
  	vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);

  
  	/*
  	 * Init clocks here so that they are available for system timer
  	 * initialization.
  	 */
  	clk_init();

  }
  
  /*
   * This function is called from the board init ("init_machine").

   */
   void __init cpu8815_platform_init(void)
  {

  #ifdef CONFIG_CACHE_L2X0
  	/* At full speed latency must be >=2, so 0x249 in low bits */
  	l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
  #endif

  	 return;
  }

  
  void cpu8815_restart(char mode, const char *cmd)
  {
  	void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
  
  	/* FIXME: use egpio when implemented */
  
  	/* Write anything to Reset status register */
  	writel(1, src_rstsr);
  }