/*
   * linux/arch/arm/mach-sa1100/collie.c
   *
   * May be copied or modified under the terms of the GNU General Public
   * License.  See linux/COPYING for more information.
   *
   * This file contains all Collie-specific tweaks.
   *
   * 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.
   *
   * ChangeLog:

   *  2006 Pavel Machek <pavel@ucw.cz>

   *  03-06-2004 John Lenz <lenz@cs.wisc.edu>

   *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
   *  04-16-2001 Lineo Japan,Inc. ...
   */

  #include <linux/init.h>
  #include <linux/kernel.h>
  #include <linux/tty.h>
  #include <linux/delay.h>

  #include <linux/platform_device.h>

  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  #include <linux/timer.h>

  #include <linux/gpio.h>

  #include <linux/pda_power.h>

  #include <linux/mfd/ucb1x00.h>

  #include <mach/hardware.h>

  #include <asm/mach-types.h>
  #include <asm/irq.h>

  #include <asm/page.h>

  #include <asm/setup.h>

  #include <mach/collie.h>

  
  #include <asm/mach/arch.h>
  #include <asm/mach/flash.h>
  #include <asm/mach/map.h>
  #include <asm/mach/serial_sa1100.h>
  
  #include <asm/hardware/scoop.h>
  #include <asm/mach/sharpsl_param.h>
  #include <asm/hardware/locomo.h>

  #include <mach/mcp.h>

  
  #include "generic.h"
  
  static struct resource collie_scoop_resources[] = {
  	[0] = {
  		.start		= 0x40800000,
  		.end		= 0x40800fff,
  		.flags		= IORESOURCE_MEM,
  	},
  };
  
  static struct scoop_config collie_scoop_setup = {
  	.io_dir 	= COLLIE_SCOOP_IO_DIR,
  	.io_out		= COLLIE_SCOOP_IO_OUT,

  	.gpio_base	= COLLIE_SCOOP_GPIO_BASE,

  };
  
  struct platform_device colliescoop_device = {
  	.name		= "sharp-scoop",
  	.id		= -1,
  	.dev		= {
   		.platform_data	= &collie_scoop_setup,
  	},
  	.num_resources	= ARRAY_SIZE(collie_scoop_resources),
  	.resource	= collie_scoop_resources,
  };

  static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {

  	{
  	.dev		= &colliescoop_device.dev,
  	.irq		= COLLIE_IRQ_GPIO_CF_IRQ,
  	.cd_irq		= COLLIE_IRQ_GPIO_CF_CD,
  	.cd_irq_str	= "PCMCIA0 CD",
  	},

  };
  
  static struct scoop_pcmcia_config collie_pcmcia_config = {

  	.devs		= &collie_pcmcia_scoop[0],
  	.num_devs	= 1,

  };

  static struct ucb1x00_plat_data collie_ucb1x00_data = {
  	.gpio_base	= COLLIE_TC35143_GPIO_BASE,
  };

  static struct mcp_plat_data collie_mcp_data = {

  	.mccr0		= MCCR0_ADM | MCCR0_ExtClk,
  	.sclk_rate	= 9216000,

  	.codec		= "ucb1x00",
  	.codec_pdata	= &collie_ucb1x00_data,

  };

  /*
   * Collie AC IN
   */
  static int collie_power_init(struct device *dev)
  {
  	int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in");
  	if (ret)
  		goto err_gpio_req;
  
  	ret = gpio_direction_input(COLLIE_GPIO_AC_IN);
  	if (ret)
  		goto err_gpio_in;
  
  	return 0;
  
  err_gpio_in:
  	gpio_free(COLLIE_GPIO_AC_IN);
  err_gpio_req:
  	return ret;
  }
  
  static void collie_power_exit(struct device *dev)
  {
  	gpio_free(COLLIE_GPIO_AC_IN);
  }
  
  static int collie_power_ac_online(void)
  {
  	return gpio_get_value(COLLIE_GPIO_AC_IN) == 2;
  }
  
  static char *collie_ac_supplied_to[] = {
  	"main-battery",
  	"backup-battery",
  };
  
  static struct pda_power_pdata collie_power_data = {
  	.init			= collie_power_init,
  	.is_ac_online		= collie_power_ac_online,
  	.exit			= collie_power_exit,
  	.supplied_to		= collie_ac_supplied_to,
  	.num_supplicants	= ARRAY_SIZE(collie_ac_supplied_to),
  };
  
  static struct resource collie_power_resource[] = {
  	{
  		.name		= "ac",
  		.start		= gpio_to_irq(COLLIE_GPIO_AC_IN),
  		.end		= gpio_to_irq(COLLIE_GPIO_AC_IN),
  		.flags		= IORESOURCE_IRQ |
  				  IORESOURCE_IRQ_HIGHEDGE |
  				  IORESOURCE_IRQ_LOWEDGE,
  	},
  };
  
  static struct platform_device collie_power_device = {
  	.name			= "pda-power",
  	.id			= -1,
  	.dev.platform_data	= &collie_power_data,
  	.resource		= collie_power_resource,
  	.num_resources		= ARRAY_SIZE(collie_power_resource),

  };

  #ifdef CONFIG_SHARP_LOCOMO
  /*
   * low-level UART features.
   */

  struct platform_device collie_locomo_device;

  
  static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  {

  	if (mctrl & TIOCM_RTS)

  		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);

  	else

  		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);

  	if (mctrl & TIOCM_DTR)

  		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);

  	else

  		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);

  }
  
  static u_int collie_uart_get_mctrl(struct uart_port *port)
  {
  	int ret = TIOCM_CD;
  	unsigned int r;

  	r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
  	if (r == -ENODEV)
  		return ret;

  	if (r & LOCOMO_GPIO_CTS)
  		ret |= TIOCM_CTS;
  	if (r & LOCOMO_GPIO_DSR)
  		ret |= TIOCM_DSR;
  
  	return ret;
  }

  
  static struct sa1100_port_fns collie_port_fns __initdata = {
  	.set_mctrl	= collie_uart_set_mctrl,
  	.get_mctrl	= collie_uart_get_mctrl,
  };

  static int collie_uart_probe(struct locomo_dev *dev)
  {

  	return 0;
  }
  
  static int collie_uart_remove(struct locomo_dev *dev)
  {

  	return 0;
  }
  
  static struct locomo_driver collie_uart_driver = {
  	.drv = {
  		.name = "collie_uart",
  	},
  	.devid	= LOCOMO_DEVID_UART,
  	.probe	= collie_uart_probe,
  	.remove	= collie_uart_remove,
  };

  static int __init collie_uart_init(void)
  {

  	return locomo_driver_register(&collie_uart_driver);
  }
  device_initcall(collie_uart_init);
  
  #endif

  
  static struct resource locomo_resources[] = {
  	[0] = {
  		.start		= 0x40000000,
  		.end		= 0x40001fff,
  		.flags		= IORESOURCE_MEM,
  	},
  	[1] = {
  		.start		= IRQ_GPIO25,
  		.end		= IRQ_GPIO25,
  		.flags		= IORESOURCE_IRQ,
  	},
  };

  static struct locomo_platform_data locomo_info = {
  	.irq_base	= IRQ_BOARD_START,
  };

  struct platform_device collie_locomo_device = {

  	.name		= "locomo",
  	.id		= 0,

  	.dev		= {
  		.platform_data	= &locomo_info,
  	},

  	.num_resources	= ARRAY_SIZE(locomo_resources),
  	.resource	= locomo_resources,
  };
  
  static struct platform_device *devices[] __initdata = {

  	&collie_locomo_device,

  	&colliescoop_device,

  	&collie_power_device,

  };
  
  static struct mtd_partition collie_partitions[] = {
  	{
  		.name		= "bootloader",
  		.offset 	= 0,
  		.size		= 0x000C0000,
  		.mask_flags	= MTD_WRITEABLE
  	}, {
  		.name		= "kernel",
  		.offset 	= MTDPART_OFS_APPEND,
  		.size		= 0x00100000,
  	}, {
  		.name		= "rootfs",
  		.offset 	= MTDPART_OFS_APPEND,
  		.size		= 0x00e20000,
  	}
  };

  static int collie_flash_init(void)
  {

  	int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable");

  	if (rc)
  		return rc;
  
  	rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1);
  	if (rc)
  		gpio_free(COLLIE_GPIO_VPEN);
  
  	return rc;
  }

  static void collie_set_vpp(int vpp)
  {

  	gpio_set_value(COLLIE_GPIO_VPEN, vpp);

  }

  static void collie_flash_exit(void)
  {
  	gpio_free(COLLIE_GPIO_VPEN);
  }

  static struct flash_platform_data collie_flash_data = {
  	.map_name	= "cfi_probe",

  	.init		= collie_flash_init,

  	.set_vpp	= collie_set_vpp,

  	.exit		= collie_flash_exit,

  	.parts		= collie_partitions,
  	.nr_parts	= ARRAY_SIZE(collie_partitions),
  };
  
  static struct resource collie_flash_resources[] = {
  	{
  		.start	= SA1100_CS0_PHYS,
  		.end	= SA1100_CS0_PHYS + SZ_32M - 1,
  		.flags	= IORESOURCE_MEM,
  	}
  };
  
  static void __init collie_init(void)
  {
  	int ret = 0;
  
  	/* cpu initialize */

  	GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
  		GPIO_MCP_CLK | GPIO_32_768kHz;
  
  	GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
  		GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
  		GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |

  		_COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON |
  		_COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;

  
  	PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
  		PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
  		PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;

  	PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY |
  		_COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC;

  	PGSR = _COLLIE_GPIO_nREMOCON_ON;

  
  	PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
  
  	PCFR = PCFR_OPDE;

  	GPSR |= _COLLIE_GPIO_UCB1x00_RESET;

  	platform_scoop_config = &collie_pcmcia_config;

  	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
  	if (ret) {
  		printk(KERN_WARNING "collie: Unable to register LoCoMo device
  ");
  	}

  	sa11x0_register_mtd(&collie_flash_data, collie_flash_resources,
  			    ARRAY_SIZE(collie_flash_resources));

  
  	/*
  	 * Setup the PPC unit correctly.
  	 */
  	PPDR &= ~PPC_RXD4;
  	PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
  	PSDR |= PPC_RXD4;
  	PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
  	PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);

  	sa11x0_register_mcp(&collie_mcp_data);

  
  	sharpsl_save_param();
  }
  
  static struct map_desc collie_io_desc[] __initdata = {

  	{	/* 32M main flash (cs0) */
  		.virtual	= 0xe8000000,
  		.pfn		= __phys_to_pfn(0x00000000),
  		.length		= 0x02000000,
  		.type		= MT_DEVICE
  	}, {	/* 32M boot flash (cs1) */
  		.virtual	= 0xea000000,
  		.pfn		= __phys_to_pfn(0x08000000),
  		.length		= 0x02000000,
  		.type		= MT_DEVICE
  	}

  };
  
  static void __init collie_map_io(void)
  {
  	sa1100_map_io();
  	iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));

  
  #ifdef CONFIG_SHARP_LOCOMO
  	sa1100_register_uart_fns(&collie_port_fns);
  #endif
  	sa1100_register_uart(0, 3);
  	sa1100_register_uart(1, 1);

  }
  
  MACHINE_START(COLLIE, "Sharp-Collie")

  	.map_io		= collie_map_io,
  	.init_irq	= sa1100_init_irq,

  	.timer		= &sa1100_timer,
  	.init_machine	= collie_init,

  	.restart	= sa11x0_restart,

  MACHINE_END