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glantank.c

/*
 * arch/arm/mach-iop32x/glantank.c
 *
 * Board support code for the GLAN Tank.
 *
 * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
 *
 * 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.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/f75375s.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/page.h>
#include <asm/arch/time.h>

/*
 * GLAN Tank timer tick configuration.
 */
static void __init glantank_timer_init(void)
{
      /* 33.333 MHz crystal.  */
      iop_init_time(200000000);
}

static struct sys_timer glantank_timer = {
      .init       = glantank_timer_init,
      .offset           = iop_gettimeoffset,
};


/*
 * GLAN Tank I/O.
 */
static struct map_desc glantank_io_desc[] __initdata = {
      {     /* on-board devices */
            .virtual    = GLANTANK_UART,
            .pfn        = __phys_to_pfn(GLANTANK_UART),
            .length           = 0x00100000,
            .type       = MT_DEVICE
      },
};

void __init glantank_map_io(void)
{
      iop3xx_map_io();
      iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
}


/*
 * GLAN Tank PCI.
 */
#define INTA      IRQ_IOP32X_XINT0
#define INTB      IRQ_IOP32X_XINT1
#define INTC      IRQ_IOP32X_XINT2
#define INTD      IRQ_IOP32X_XINT3

static int __init
glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
      static int pci_irq_table[][4] = {
            /*
             * PCI IDSEL/INTPIN->INTLINE
             * A       B       C       D
             */
            {INTD, INTD, INTD, INTD}, /* UART (8250) */
            {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
            {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
            {INTC, INTC, INTC, INTC}, /* USB (NEC) */
      };

      BUG_ON(pin < 1 || pin > 4);

      return pci_irq_table[slot % 4][pin - 1];
}

static struct hw_pci glantank_pci __initdata = {
      .swizzle    = pci_std_swizzle,
      .nr_controllers = 1,
      .setup            = iop3xx_pci_setup,
      .preinit    = iop3xx_pci_preinit,
      .scan       = iop3xx_pci_scan_bus,
      .map_irq    = glantank_pci_map_irq,
};

static int __init glantank_pci_init(void)
{
      if (machine_is_glantank())
            pci_common_init(&glantank_pci);

      return 0;
}

subsys_initcall(glantank_pci_init);


/*
 * GLAN Tank machine initialization.
 */
static struct physmap_flash_data glantank_flash_data = {
      .width            = 2,
};

static struct resource glantank_flash_resource = {
      .start            = 0xf0000000,
      .end        = 0xf007ffff,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device glantank_flash_device = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data    = &glantank_flash_data,
      },
      .num_resources    = 1,
      .resource   = &glantank_flash_resource,
};

static struct plat_serial8250_port glantank_serial_port[] = {
      {
            .mapbase    = GLANTANK_UART,
            .membase    = (char *)GLANTANK_UART,
            .irq        = IRQ_IOP32X_XINT3,
            .flags            = UPF_SKIP_TEST,
            .iotype           = UPIO_MEM,
            .regshift   = 0,
            .uartclk    = 1843200,
      },
      { },
};

static struct resource glantank_uart_resource = {
      .start            = GLANTANK_UART,
      .end        = GLANTANK_UART + 7,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device glantank_serial_device = {
      .name       = "serial8250",
      .id         = PLAT8250_DEV_PLATFORM,
      .dev        = {
            .platform_data          = glantank_serial_port,
      },
      .num_resources    = 1,
      .resource   = &glantank_uart_resource,
};

static struct f75375s_platform_data glantank_f75375s = {
      .pwm        = { 255, 255 },
      .pwm_enable = { 0, 0 },
};

static struct i2c_board_info __initdata glantank_i2c_devices[] = {
      {
            I2C_BOARD_INFO("rs5c372a", 0x32),
      },
      {
            I2C_BOARD_INFO("f75375", 0x2e),
            .platform_data = &glantank_f75375s,
      },
};

static void glantank_power_off(void)
{
      __raw_writeb(0x01, 0xfe8d0004);

      while (1)
            ;
}

static void __init glantank_init_machine(void)
{
      platform_device_register(&iop3xx_i2c0_device);
      platform_device_register(&iop3xx_i2c1_device);
      platform_device_register(&glantank_flash_device);
      platform_device_register(&glantank_serial_device);
      platform_device_register(&iop3xx_dma_0_channel);
      platform_device_register(&iop3xx_dma_1_channel);

      i2c_register_board_info(0, glantank_i2c_devices,
            ARRAY_SIZE(glantank_i2c_devices));

      pm_power_off = glantank_power_off;
}

MACHINE_START(GLANTANK, "GLAN Tank")
      /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
      .phys_io    = GLANTANK_UART,
      .io_pg_offst      = ((GLANTANK_UART) >> 18) & 0xfffc,
      .boot_params      = 0xa0000100,
      .map_io           = glantank_map_io,
      .init_irq   = iop32x_init_irq,
      .timer            = &glantank_timer,
      .init_machine     = glantank_init_machine,
MACHINE_END

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