/*
   * linux/arch/arm/mach-sa1100/badge4.c
   *
   * BadgePAD 4 specific initialization
   *
   *   Tim Connors <connors@hpl.hp.com>
   *   Christopher Hoover <ch@hpl.hp.com>
   *
   * Copyright (C) 2002 Hewlett-Packard Company
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   */
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/platform_data/sa11x0-serial.h>
  #include <linux/platform_device.h>
  #include <linux/delay.h>
  #include <linux/tty.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  #include <linux/errno.h>
  #include <linux/gpio.h>
  #include <linux/leds.h>
  
  #include <mach/hardware.h>
  #include <asm/mach-types.h>
  #include <asm/setup.h>
  #include <mach/irqs.h>
  
  #include <asm/mach/arch.h>
  #include <asm/mach/flash.h>
  #include <asm/mach/map.h>
  #include <asm/hardware/sa1111.h>
  
  #include <mach/badge4.h>
  
  #include "generic.h"
  
  static struct resource sa1111_resources[] = {
  	[0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
  	[1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
  };
  
  static int badge4_sa1111_enable(void *data, unsigned devid)
  {
  	if (devid == SA1111_DEVID_USB)
  		badge4_set_5V(BADGE4_5V_USB, 1);
  	return 0;
  }
  
  static void badge4_sa1111_disable(void *data, unsigned devid)
  {
  	if (devid == SA1111_DEVID_USB)
  		badge4_set_5V(BADGE4_5V_USB, 0);
  }
  
  static struct sa1111_platform_data sa1111_info = {
  	.disable_devs	= SA1111_DEVID_PS2_MSE,
  	.enable		= badge4_sa1111_enable,
  	.disable	= badge4_sa1111_disable,
  };
  
  static u64 sa1111_dmamask = 0xffffffffUL;
  
  static struct platform_device sa1111_device = {
  	.name		= "sa1111",
  	.id		= 0,
  	.dev		= {
  		.dma_mask = &sa1111_dmamask,
  		.coherent_dma_mask = 0xffffffff,
  		.platform_data = &sa1111_info,
  	},
  	.num_resources	= ARRAY_SIZE(sa1111_resources),
  	.resource	= sa1111_resources,
  };
  
  /* LEDs */
  struct gpio_led badge4_gpio_leds[] = {
  	{
  		.name			= "badge4:red",
  		.default_trigger	= "heartbeat",
  		.gpio			= 7,
  	},
  	{
  		.name			= "badge4:green",
  		.default_trigger	= "cpu0",
  		.gpio			= 9,
  	},
  };
  
  static struct gpio_led_platform_data badge4_gpio_led_info = {
  	.leds		= badge4_gpio_leds,
  	.num_leds	= ARRAY_SIZE(badge4_gpio_leds),
  };
  
  static struct platform_device badge4_leds = {
  	.name	= "leds-gpio",
  	.id	= -1,
  	.dev	= {
  		.platform_data	= &badge4_gpio_led_info,
  	}
  };
  
  static struct platform_device *devices[] __initdata = {
  	&sa1111_device,
  	&badge4_leds,
  };
  
  static int __init badge4_sa1111_init(void)
  {
  	/*
  	 * Ensure that the memory bus request/grant signals are setup,
  	 * and the grant is held in its inactive state
  	 */
  	sa1110_mb_disable();
  
  	/*
  	 * Probe for SA1111.
  	 */
  	return platform_add_devices(devices, ARRAY_SIZE(devices));
  }
  
  
  /*
   * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
   *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
   *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
   *
   * <or>
   *
   * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
   *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
   *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
   */
  static struct mtd_partition badge4_partitions[] = {
  	{
  		.name	= "BLOB boot loader",
  		.offset	= 0,
  		.size	= 0x0000A000
  	}, {
  		.name	= "params",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= 0x00006000
  	}, {
  		.name	= "root",
  		.offset	= MTDPART_OFS_APPEND,
  		.size	= MTDPART_SIZ_FULL
  	}
  };
  
  static struct flash_platform_data badge4_flash_data = {
  	.map_name	= "cfi_probe",
  	.parts		= badge4_partitions,
  	.nr_parts	= ARRAY_SIZE(badge4_partitions),
  };
  
  static struct resource badge4_flash_resource =
  	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
  
  static int five_v_on __initdata = 0;
  
  static int __init five_v_on_setup(char *ignore)
  {
  	five_v_on = 1;
  	return 1;
  }
  __setup("five_v_on", five_v_on_setup);
  
  
  static int __init badge4_init(void)
  {
  	int ret;
  
  	if (!machine_is_badge4())
  		return -ENODEV;
  
  	/* LCD */
  	GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
  		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
  		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
  		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
  		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
  		 BADGE4_GPIO_GPC_VID);
  	GPDR &= ~BADGE4_GPIO_INT_VID;
  	GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
  		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
  		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
  		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
  		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
  		 BADGE4_GPIO_GPC_VID);
  
  	/* SDRAM SPD i2c */
  	GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
  	GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
  
  	/* uart */
  	GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
  	GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
  
  	/* CPLD muxsel0 input for mux/adc chip select */
  	GPCR  = BADGE4_GPIO_MUXSEL0;
  	GPDR |= BADGE4_GPIO_MUXSEL0;
  
  	/* test points: J5, J6 as inputs, J7 outputs */
  	GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
  	GPCR  = BADGE4_GPIO_TESTPT_J7;
  	GPDR |= BADGE4_GPIO_TESTPT_J7;
  
  	/* 5V supply rail. */
  	GPCR  = BADGE4_GPIO_PCMEN5V;		/* initially off */
  	GPDR |= BADGE4_GPIO_PCMEN5V;
  
  	/* CPLD sdram type inputs; set up by blob */
  	//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
  	printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d
  ",
  		!!(GPLR & BADGE4_GPIO_SDTYP1),
  		!!(GPLR & BADGE4_GPIO_SDTYP0));
  
  	/* SA1111 reset pin; set up by blob */
  	//GPSR  = BADGE4_GPIO_SA1111_NRST;
  	//GPDR |= BADGE4_GPIO_SA1111_NRST;
  
  
  	/* power management cruft */
  	PGSR = 0;
  	PWER = 0;
  	PCFR = 0;
  	PSDR = 0;
  
  	PWER |= PWER_GPIO26;	/* wake up on an edge from TESTPT_J5 */
  	PWER |= PWER_RTC;	/* wake up if rtc fires */
  
  	/* drive sa1111_nrst during sleep */
  	PGSR |= BADGE4_GPIO_SA1111_NRST;
  	/* drive CPLD as is during sleep */
  	PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
  
  
  	/* Now bring up the SA-1111. */
  	ret = badge4_sa1111_init();
  	if (ret < 0)
  		printk(KERN_ERR
  			"%s: SA-1111 initialization failed (%d)
  ",
  			__func__, ret);
  
  
  	/* maybe turn on 5v0 from the start */
  	badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
  
  	sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
  
  	return 0;
  }
  
  arch_initcall(badge4_init);
  
  
  static unsigned badge4_5V_bitmap = 0;
  
  void badge4_set_5V(unsigned subsystem, int on)
  {
  	unsigned long flags;
  	unsigned old_5V_bitmap;
  
  	local_irq_save(flags);
  
  	old_5V_bitmap = badge4_5V_bitmap;
  
  	if (on) {
  		badge4_5V_bitmap |= subsystem;
  	} else {
  		badge4_5V_bitmap &= ~subsystem;
  	}
  
  	/* detect on->off and off->on transitions */
  	if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
  		/* was off, now on */
  		printk(KERN_INFO "%s: enabling 5V supply rail
  ", __func__);
  		GPSR = BADGE4_GPIO_PCMEN5V;
  	} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
  		/* was on, now off */
  		printk(KERN_INFO "%s: disabling 5V supply rail
  ", __func__);
  		GPCR = BADGE4_GPIO_PCMEN5V;
  	}
  
  	local_irq_restore(flags);
  }
  EXPORT_SYMBOL(badge4_set_5V);
  
  
  static struct map_desc badge4_io_desc[] __initdata = {
  	{	/* SRAM  bank 1 */
  		.virtual	= 0xf1000000,
  		.pfn		= __phys_to_pfn(0x08000000),
  		.length		= 0x00100000,
  		.type		= MT_DEVICE
  	}, {	/* SRAM  bank 2 */
  		.virtual	= 0xf2000000,
  		.pfn		= __phys_to_pfn(0x10000000),
  		.length		= 0x00100000,
  		.type		= MT_DEVICE
  	}
  };
  
  static void
  badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  {
  	if (!state) {
  		Ser1SDCR0 |= SDCR0_UART;
  	}
  }
  
  static struct sa1100_port_fns badge4_port_fns __initdata = {
  	//.get_mctrl	= badge4_get_mctrl,
  	//.set_mctrl	= badge4_set_mctrl,
  	.pm		= badge4_uart_pm,
  };
  
  static void __init badge4_map_io(void)
  {
  	sa1100_map_io();
  	iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
  
  	sa1100_register_uart_fns(&badge4_port_fns);
  	sa1100_register_uart(0, 3);
  	sa1100_register_uart(1, 1);
  }
  
  MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
  	.atag_offset	= 0x100,
  	.map_io		= badge4_map_io,
  	.nr_irqs	= SA1100_NR_IRQS,
  	.init_irq	= sa1100_init_irq,
  	.init_late	= sa11x0_init_late,
  	.init_time	= sa1100_timer_init,
  #ifdef CONFIG_SA1111
  	.dma_zone_size	= SZ_1M,
  #endif
  	.restart	= sa11x0_restart,
  MACHINE_END