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collie.c

/*
 * 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@suse.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 <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.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,
};

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 mcp_plat_data collie_mcp_data = {
      .mccr0            = MCCR0_ADM | MCCR0_ExtClk,
      .sclk_rate  = 9216000,
};

#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,
      },
};

struct platform_device collie_locomo_device = {
      .name       = "locomo",
      .id         = 0,
      .num_resources    = ARRAY_SIZE(locomo_resources),
      .resource   = locomo_resources,
};

static struct platform_device *devices[] __initdata = {
      &collie_locomo_device,
      &colliescoop_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;


      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\n");
      }

      sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
                        ARRAY_SIZE(collie_flash_resources));
      sa11x0_set_mcp_data(&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")
      .phys_io    = 0x80000000,
      .io_pg_offst      = ((0xf8000000) >> 18) & 0xfffc,
      .map_io           = collie_map_io,
      .init_irq   = sa1100_init_irq,
      .timer            = &sa1100_timer,
      .init_machine     = collie_init,
MACHINE_END

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