/*
   * arch/arm/mach-spear6xx/spear6xx.c
   *
   * SPEAr6XX machines common source file
   *
   * Copyright (C) 2009 ST Microelectronics
   * Rajeev Kumar<rajeev-dlh.kumar@st.com>
   *
   * This file is licensed under the terms of the GNU General Public
   * License version 2. This program is licensed "as is" without any
   * warranty of any kind, whether express or implied.
   */
  
  #include <linux/types.h>
  #include <linux/amba/pl061.h>

  #include <linux/ptrace.h>
  #include <linux/io.h>
  #include <asm/hardware/vic.h>
  #include <asm/irq.h>
  #include <asm/mach/arch.h>

  #include <mach/generic.h>

  #include <mach/hardware.h>

  #include <mach/irqs.h>

  
  /* Add spear6xx machines common devices here */

  /* uart device registration */

  struct amba_device uart_device[] = {
  	{
  		.dev = {
  			.init_name = "uart0",
  		},
  		.res = {
  			.start = SPEAR6XX_ICM1_UART0_BASE,

  			.end = SPEAR6XX_ICM1_UART0_BASE + SZ_4K - 1,

  			.flags = IORESOURCE_MEM,
  		},
  		.irq = {IRQ_UART_0, NO_IRQ},
  	}, {
  		.dev = {
  			.init_name = "uart1",
  		},
  		.res = {
  			.start = SPEAR6XX_ICM1_UART1_BASE,

  			.end = SPEAR6XX_ICM1_UART1_BASE + SZ_4K - 1,

  			.flags = IORESOURCE_MEM,
  		},
  		.irq = {IRQ_UART_1, NO_IRQ},
  	}
  };

  /* gpio device registration */

  static struct pl061_platform_data gpio_plat_data[] = {
  	{
  		.gpio_base	= 0,
  		.irq_base	= SPEAR_GPIO0_INT_BASE,
  	}, {
  		.gpio_base	= 8,
  		.irq_base	= SPEAR_GPIO1_INT_BASE,
  	}, {
  		.gpio_base	= 16,
  		.irq_base	= SPEAR_GPIO2_INT_BASE,
  	},
  };
  
  struct amba_device gpio_device[] = {
  	{
  		.dev = {
  			.init_name = "gpio0",
  			.platform_data = &gpio_plat_data[0],
  		},
  		.res = {
  			.start = SPEAR6XX_CPU_GPIO_BASE,

  			.end = SPEAR6XX_CPU_GPIO_BASE + SZ_4K - 1,

  			.flags = IORESOURCE_MEM,
  		},
  		.irq = {IRQ_LOCAL_GPIO, NO_IRQ},
  	}, {
  		.dev = {
  			.init_name = "gpio1",
  			.platform_data = &gpio_plat_data[1],
  		},
  		.res = {
  			.start = SPEAR6XX_ICM3_GPIO_BASE,

  			.end = SPEAR6XX_ICM3_GPIO_BASE + SZ_4K - 1,

  			.flags = IORESOURCE_MEM,
  		},
  		.irq = {IRQ_BASIC_GPIO, NO_IRQ},
  	}, {
  		.dev = {
  			.init_name = "gpio2",
  			.platform_data = &gpio_plat_data[2],
  		},
  		.res = {
  			.start = SPEAR6XX_ICM2_GPIO_BASE,

  			.end = SPEAR6XX_ICM2_GPIO_BASE + SZ_4K - 1,

  			.flags = IORESOURCE_MEM,
  		},
  		.irq = {IRQ_APPL_GPIO, NO_IRQ},
  	}
  };
  
  /* This will add devices, and do machine specific tasks */
  void __init spear6xx_init(void)
  {
  	/* nothing to do for now */
  }
  
  /* This will initialize vic */
  void __init spear6xx_init_irq(void)
  {
  	vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_PRI_BASE, 0, ~0, 0);
  	vic_init((void __iomem *)VA_SPEAR6XX_CPU_VIC_SEC_BASE, 32, ~0, 0);
  }
  
  /* Following will create static virtual/physical mappings */
  static struct map_desc spear6xx_io_desc[] __initdata = {
  	{
  		.virtual	= VA_SPEAR6XX_ICM1_UART0_BASE,
  		.pfn		= __phys_to_pfn(SPEAR6XX_ICM1_UART0_BASE),

  		.length		= SZ_4K,

  		.type		= MT_DEVICE
  	}, {
  		.virtual	= VA_SPEAR6XX_CPU_VIC_PRI_BASE,
  		.pfn		= __phys_to_pfn(SPEAR6XX_CPU_VIC_PRI_BASE),

  		.length		= SZ_4K,

  		.type		= MT_DEVICE
  	}, {
  		.virtual	= VA_SPEAR6XX_CPU_VIC_SEC_BASE,
  		.pfn		= __phys_to_pfn(SPEAR6XX_CPU_VIC_SEC_BASE),

  		.length		= SZ_4K,

  		.type		= MT_DEVICE
  	}, {
  		.virtual	= VA_SPEAR6XX_ICM3_SYS_CTRL_BASE,
  		.pfn		= __phys_to_pfn(SPEAR6XX_ICM3_SYS_CTRL_BASE),

  		.length		= SZ_4K,

  		.type		= MT_DEVICE
  	}, {
  		.virtual	= VA_SPEAR6XX_ICM3_MISC_REG_BASE,
  		.pfn		= __phys_to_pfn(SPEAR6XX_ICM3_MISC_REG_BASE),

  		.length		= SZ_4K,

  		.type		= MT_DEVICE
  	},
  };
  
  /* This will create static memory mapping for selected devices */
  void __init spear6xx_map_io(void)
  {
  	iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
  
  	/* This will initialize clock framework */

  	spear6xx_clk_init();

  }

  
  static void __init spear6xx_timer_init(void)
  {
  	char pclk_name[] = "pll3_48m_clk";
  	struct clk *gpt_clk, *pclk;
  
  	/* get the system timer clock */
  	gpt_clk = clk_get_sys("gpt0", NULL);
  	if (IS_ERR(gpt_clk)) {
  		pr_err("%s:couldn't get clk for gpt
  ", __func__);
  		BUG();
  	}
  
  	/* get the suitable parent clock for timer*/
  	pclk = clk_get(NULL, pclk_name);
  	if (IS_ERR(pclk)) {
  		pr_err("%s:couldn't get %s as parent for gpt
  ",
  				__func__, pclk_name);
  		BUG();
  	}
  
  	clk_set_parent(gpt_clk, pclk);
  	clk_put(gpt_clk);
  	clk_put(pclk);
  
  	spear_setup_timer();
  }
  
  struct sys_timer spear6xx_timer = {
  	.init = spear6xx_timer_init,
  };