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board-h4.c

/*
 * linux/arch/arm/mach-omap/omap2/board-h4.c
 *
 * Copyright (C) 2005 Nokia Corporation
 * Author: Paul Mundt <paul.mundt@nokia.com>
 *
 * Modified from mach-omap/omap1/board-generic.c
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/input.h>

#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <asm/arch/gpio.h>
#include <asm/arch/gpioexpander.h>
#include <asm/arch/mux.h>
#include <asm/arch/usb.h>
#include <asm/arch/irda.h>
#include <asm/arch/board.h>
#include <asm/arch/common.h>
#include <asm/arch/keypad.h>
#include <asm/arch/menelaus.h>
#include <asm/arch/dma.h>
#include "prcm-regs.h"

#include <asm/io.h>
#include <asm/delay.h>

static unsigned int row_gpios[6] = { 88, 89, 124, 11, 6, 96 };
static unsigned int col_gpios[7] = { 90, 91, 100, 36, 12, 97, 98 };

static int h4_keymap[] = {
      KEY(0, 0, KEY_LEFT),
      KEY(0, 1, KEY_RIGHT),
      KEY(0, 2, KEY_A),
      KEY(0, 3, KEY_B),
      KEY(0, 4, KEY_C),
      KEY(1, 0, KEY_DOWN),
      KEY(1, 1, KEY_UP),
      KEY(1, 2, KEY_E),
      KEY(1, 3, KEY_F),
      KEY(1, 4, KEY_G),
      KEY(2, 0, KEY_ENTER),
      KEY(2, 1, KEY_I),
      KEY(2, 2, KEY_J),
      KEY(2, 3, KEY_K),
      KEY(2, 4, KEY_3),
      KEY(3, 0, KEY_M),
      KEY(3, 1, KEY_N),
      KEY(3, 2, KEY_O),
      KEY(3, 3, KEY_P),
      KEY(3, 4, KEY_Q),
      KEY(4, 0, KEY_R),
      KEY(4, 1, KEY_4),
      KEY(4, 2, KEY_T),
      KEY(4, 3, KEY_U),
      KEY(4, 4, KEY_ENTER),
      KEY(5, 0, KEY_V),
      KEY(5, 1, KEY_W),
      KEY(5, 2, KEY_L),
      KEY(5, 3, KEY_S),
      KEY(5, 4, KEY_ENTER),
      0
};

static struct mtd_partition h4_partitions[] = {
      /* bootloader (U-Boot, etc) in first sector */
      {
            .name       = "bootloader",
            .offset           = 0,
            .size       = SZ_128K,
            .mask_flags = MTD_WRITEABLE, /* force read-only */
      },
      /* bootloader params in the next sector */
      {
            .name       = "params",
            .offset           = MTDPART_OFS_APPEND,
            .size       = SZ_128K,
            .mask_flags = 0,
      },
      /* kernel */
      {
            .name       = "kernel",
            .offset           = MTDPART_OFS_APPEND,
            .size       = SZ_2M,
            .mask_flags = 0
      },
      /* file system */
      {
            .name       = "filesystem",
            .offset           = MTDPART_OFS_APPEND,
            .size       = MTDPART_SIZ_FULL,
            .mask_flags = 0
      }
};

static struct flash_platform_data h4_flash_data = {
      .map_name   = "cfi_probe",
      .width            = 2,
      .parts            = h4_partitions,
      .nr_parts   = ARRAY_SIZE(h4_partitions),
};

static struct resource h4_flash_resource = {
      .start            = H4_CS0_BASE,
      .end        = H4_CS0_BASE + SZ_64M - 1,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device h4_flash_device = {
      .name       = "omapflash",
      .id         = 0,
      .dev        = {
            .platform_data    = &h4_flash_data,
      },
      .num_resources    = 1,
      .resource   = &h4_flash_resource,
};

static struct resource h4_smc91x_resources[] = {
      [0] = {
            .start  = OMAP24XX_ETHR_START,          /* Physical */
            .end    = OMAP24XX_ETHR_START + 0xf,
            .flags  = IORESOURCE_MEM,
      },
      [1] = {
            .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
            .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
            .flags  = IORESOURCE_IRQ,
      },
};

static struct platform_device h4_smc91x_device = {
      .name       = "smc91x",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(h4_smc91x_resources),
      .resource   = h4_smc91x_resources,
};

/* Select between the IrDA and aGPS module
 */
static int h4_select_irda(struct device *dev, int state)
{
      unsigned char expa;
      int err = 0;

      if ((err = read_gpio_expa(&expa, 0x21))) {
            printk(KERN_ERR "Error reading from I/O expander\n");
            return err;
      }

      /* 'P6' enable/disable IRDA_TX and IRDA_RX */
      if (state & IR_SEL) {   /* IrDa */
            if ((err = write_gpio_expa(expa | 0x01, 0x21))) {
                  printk(KERN_ERR "Error writing to I/O expander\n");
                  return err;
            }
      } else {
            if ((err = write_gpio_expa(expa & ~0x01, 0x21))) {
                  printk(KERN_ERR "Error writing to I/O expander\n");
                  return err;
            }
      }
      return err;
}

static void set_trans_mode(void *data)
{
      int *mode = data;
      unsigned char expa;
      int err = 0;

      if ((err = read_gpio_expa(&expa, 0x20)) != 0) {
            printk(KERN_ERR "Error reading from I/O expander\n");
      }

      expa &= ~0x01;

      if (!(*mode & IR_SIRMODE)) { /* MIR/FIR */
            expa |= 0x01;
      }

      if ((err = write_gpio_expa(expa, 0x20)) != 0) {
            printk(KERN_ERR "Error writing to I/O expander\n");
      }
}

static int h4_transceiver_mode(struct device *dev, int mode)
{
      struct omap_irda_config *irda_config = dev->platform_data;

      cancel_delayed_work(&irda_config->gpio_expa);
      PREPARE_WORK(&irda_config->gpio_expa, set_trans_mode, &mode);
      schedule_work(&irda_config->gpio_expa);

      return 0;
}

static struct omap_irda_config h4_irda_data = {
      .transceiver_cap  = IR_SIRMODE | IR_MIRMODE | IR_FIRMODE,
      .transceiver_mode = h4_transceiver_mode,
      .select_irda            = h4_select_irda,
      .rx_channel       = OMAP24XX_DMA_UART3_RX,
      .tx_channel       = OMAP24XX_DMA_UART3_TX,
      .dest_start       = OMAP_UART3_BASE,
      .src_start        = OMAP_UART3_BASE,
      .tx_trigger       = OMAP24XX_DMA_UART3_TX,
      .rx_trigger       = OMAP24XX_DMA_UART3_RX,
};

static struct resource h4_irda_resources[] = {
      [0] = {
            .start      = INT_24XX_UART3_IRQ,
            .end  = INT_24XX_UART3_IRQ,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device h4_irda_device = {
      .name       = "omapirda",
      .id         = -1,
      .dev        = {
            .platform_data    = &h4_irda_data,
      },
      .num_resources    = 1,
      .resource   = h4_irda_resources,
};

static struct omap_kp_platform_data h4_kp_data = {
      .rows       = 6,
      .cols       = 7,
      .keymap     = h4_keymap,
      .rep        = 1,
      .row_gpios  = row_gpios,
      .col_gpios  = col_gpios,
};

static struct platform_device h4_kp_device = {
      .name       = "omap-keypad",
      .id         = -1,
      .dev        = {
            .platform_data = &h4_kp_data,
      },
};

static struct platform_device h4_lcd_device = {
      .name       = "lcd_h4",
      .id         = -1,
};

static struct platform_device *h4_devices[] __initdata = {
      &h4_smc91x_device,
      &h4_flash_device,
      &h4_irda_device,
      &h4_kp_device,
      &h4_lcd_device,
};

static inline void __init h4_init_smc91x(void)
{
      /* Make sure CS1 timings are correct */
      GPMC_CONFIG1_1 = 0x00011200;
      GPMC_CONFIG2_1 = 0x001f1f01;
      GPMC_CONFIG3_1 = 0x00080803;
      GPMC_CONFIG4_1 = 0x1c091c09;
      GPMC_CONFIG5_1 = 0x041f1f1f;
      GPMC_CONFIG6_1 = 0x000004c4;
      GPMC_CONFIG7_1 = 0x00000f40 | (0x08000000 >> 24);
      udelay(100);

      omap_cfg_reg(M15_24XX_GPIO92);
      if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
            printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
                  OMAP24XX_ETHR_GPIO_IRQ);
            return;
      }
      omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
}

static void __init omap_h4_init_irq(void)
{
      omap2_init_common_hw();
      omap_init_irq();
      omap_gpio_init();
      h4_init_smc91x();
}

static struct omap_uart_config h4_uart_config __initdata = {
      .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};

static struct omap_mmc_config h4_mmc_config __initdata = {
      .mmc [0] = {
            .enabled    = 1,
            .wire4            = 1,
            .wp_pin           = -1,
            .power_pin  = -1,
            .switch_pin = -1,
      },
};

static struct omap_lcd_config h4_lcd_config __initdata = {
      .ctrl_name  = "internal",
};

static struct omap_board_config_kernel h4_config[] = {
      { OMAP_TAG_UART,  &h4_uart_config },
      { OMAP_TAG_MMC,         &h4_mmc_config },
      { OMAP_TAG_LCD,         &h4_lcd_config },
};

static void __init omap_h4_init(void)
{
      /*
       * Make sure the serial ports are muxed on at this point.
       * You have to mux them off in device drivers later on
       * if not needed.
       */
#if defined(CONFIG_OMAP_IR) || defined(CONFIG_OMAP_IR_MODULE)
      omap_cfg_reg(K15_24XX_UART3_TX);
      omap_cfg_reg(K14_24XX_UART3_RX);
#endif

#if defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
      if (omap_has_menelaus()) {
            row_gpios[5] = 0;
            col_gpios[2] = 15;
            col_gpios[6] = 18;
      }
#endif

      platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
      omap_board_config = h4_config;
      omap_board_config_size = ARRAY_SIZE(h4_config);
      omap_serial_init();
}

static void __init omap_h4_map_io(void)
{
      omap2_map_common_io();
}

MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
      /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
      .phys_io    = 0x48000000,
      .io_pg_offst      = ((0xd8000000) >> 18) & 0xfffc,
      .boot_params      = 0x80000100,
      .map_io           = omap_h4_map_io,
      .init_irq   = omap_h4_init_irq,
      .init_machine     = omap_h4_init,
      .timer            = &omap_timer,
MACHINE_END

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