/*
   * linux/arch/arm/mach-sa1100/hackkit.c
   *
   * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
   *
   * This file contains all HackKit tweaks. Based on original work from
   * Nicolas Pitre's assabet fixes
   *
   * 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/init.h>
  #include <linux/kernel.h>
  #include <linux/sched.h>
  #include <linux/tty.h>
  #include <linux/module.h>
  #include <linux/errno.h>
  #include <linux/cpufreq.h>
  #include <linux/platform_data/sa11x0-serial.h>
  #include <linux/serial_core.h>
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  #include <linux/tty.h>
  #include <linux/gpio.h>
  #include <linux/leds.h>
  #include <linux/platform_device.h>
  
  #include <asm/mach-types.h>
  #include <asm/setup.h>
  #include <asm/page.h>
  #include <asm/pgtable.h>
  
  #include <asm/mach/arch.h>
  #include <asm/mach/flash.h>
  #include <asm/mach/map.h>
  #include <asm/mach/irq.h>
  
  #include <mach/hardware.h>
  #include <mach/irqs.h>
  
  #include "generic.h"
  
  /**********************************************************************
   *  prototypes
   */
  
  /* init funcs */
  static void __init hackkit_map_io(void);
  
  static u_int hackkit_get_mctrl(struct uart_port *port);
  static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
  static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
  
  /**********************************************************************
   *  global data
   */
  
  /**********************************************************************
   *  static data
   */
  
  static struct map_desc hackkit_io_desc[] __initdata = {
  	{	/* Flash bank 0 */
  		.virtual	=  0xe8000000,
  		.pfn		= __phys_to_pfn(0x00000000),
  		.length		= 0x01000000,
  		.type		= MT_DEVICE
  	},
  };
  
  static struct sa1100_port_fns hackkit_port_fns __initdata = {
  	.set_mctrl	= hackkit_set_mctrl,
  	.get_mctrl	= hackkit_get_mctrl,
  	.pm		= hackkit_uart_pm,
  };
  
  /**********************************************************************
   *  Static functions
   */
  
  static void __init hackkit_map_io(void)
  {
  	sa1100_map_io();
  	iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
  
  	sa1100_register_uart_fns(&hackkit_port_fns);
  	sa1100_register_uart(0, 1);	/* com port */
  	sa1100_register_uart(1, 2);
  	sa1100_register_uart(2, 3);	/* radio module */
  
  	Ser1SDCR0 |= SDCR0_SUS;
  }
  
  /**
   *	hackkit_uart_pm - powermgmt callback function for system 3 UART
   *	@port: uart port structure
   *	@state: pm state
   *	@oldstate: old pm state
   *
   */
  static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  {
  	/* TODO: switch on/off uart in powersave mode */
  }
  
  /*
   * Note! this can be called from IRQ context.
   * FIXME: No modem ctrl lines yet.
   */
  static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
  {
  #if 0
  	if (port->mapbase == _Ser1UTCR0) {
  		u_int set = 0, clear = 0;
  
  		if (mctrl & TIOCM_RTS)
  			set |= PT_CTRL2_RS1_RTS;
  		else
  			clear |= PT_CTRL2_RS1_RTS;
  
  		if (mctrl & TIOCM_DTR)
  			set |= PT_CTRL2_RS1_DTR;
  		else
  			clear |= PT_CTRL2_RS1_DTR;
  
  		PTCTRL2_clear(clear);
  		PTCTRL2_set(set);
  	}
  #endif
  }
  
  static u_int hackkit_get_mctrl(struct uart_port *port)
  {
  	u_int ret = 0;
  #if 0
  	u_int irqsr = PT_IRQSR;
  
  	/* need 2 reads to read current value */
  	irqsr = PT_IRQSR;
  
  	/* TODO: check IRQ source register for modem/com
  	 status lines and set them correctly. */
  #endif
  
  	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
  
  	return ret;
  }
  
  static struct mtd_partition hackkit_partitions[] = {
  	{
  		.name		= "BLOB",
  		.size		= 0x00040000,
  		.offset		= 0x00000000,
  		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
  	}, {
  		.name		= "config",
  		.size		= 0x00040000,
  		.offset		= MTDPART_OFS_APPEND,
  	}, {
  		.name		= "kernel",
  		.size		= 0x00100000,
  		.offset		= MTDPART_OFS_APPEND,
  	}, {
  		.name		= "initrd",
  		.size		= 0x00180000,
  		.offset		= MTDPART_OFS_APPEND,
  	}, {
  		.name		= "rootfs",
  		.size		= 0x700000,
  		.offset		= MTDPART_OFS_APPEND,
  	}, {
  		.name		= "data",
  		.size		= MTDPART_SIZ_FULL,
  		.offset		= MTDPART_OFS_APPEND,
  	}
  };
  
  static struct flash_platform_data hackkit_flash_data = {
  	.map_name	= "cfi_probe",
  	.parts		= hackkit_partitions,
  	.nr_parts	= ARRAY_SIZE(hackkit_partitions),
  };
  
  static struct resource hackkit_flash_resource =
  	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
  
  /* LEDs */
  struct gpio_led hackkit_gpio_leds[] = {
  	{
  		.name			= "hackkit:red",
  		.default_trigger	= "cpu0",
  		.gpio			= 22,
  	},
  	{
  		.name			= "hackkit:green",
  		.default_trigger	= "heartbeat",
  		.gpio			= 23,
  	},
  };
  
  static struct gpio_led_platform_data hackkit_gpio_led_info = {
  	.leds		= hackkit_gpio_leds,
  	.num_leds	= ARRAY_SIZE(hackkit_gpio_leds),
  };
  
  static struct platform_device hackkit_leds = {
  	.name	= "leds-gpio",
  	.id	= -1,
  	.dev	= {
  		.platform_data	= &hackkit_gpio_led_info,
  	}
  };
  
  static void __init hackkit_init(void)
  {
  	sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
  	platform_device_register(&hackkit_leds);
  }
  
  /**********************************************************************
   *  Exported Functions
   */
  
  MACHINE_START(HACKKIT, "HackKit Cpu Board")
  	.atag_offset	= 0x100,
  	.map_io		= hackkit_map_io,
  	.nr_irqs	= SA1100_NR_IRQS,
  	.init_irq	= sa1100_init_irq,
  	.init_time	= sa1100_timer_init,
  	.init_machine	= hackkit_init,
  	.init_late	= sa11x0_init_late,
  	.restart	= sa11x0_restart,
  MACHINE_END