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board-h4.c

/*
 * linux/arch/arm/mach-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/i2c.h>
#include <linux/i2c/at24.h>
#include <linux/input.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>

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

#include <mach/control.h>
#include <mach/gpio.h>
#include <mach/mux.h>
#include <mach/usb.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/keypad.h>
#include <mach/menelaus.h>
#include <mach/dma.h>
#include <mach/gpmc.h>

#define H4_FLASH_CS     0
#define H4_SMC91X_CS    1

#define H4_ETHR_GPIO_IRQ            92

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 = {
      .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 omap_kp_platform_data h4_kp_data = {
      .rows       = 6,
      .cols       = 7,
      .keymap     = h4_keymap,
      .keymapsize       = ARRAY_SIZE(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_flash_device,
      &h4_kp_device,
      &h4_lcd_device,
};

/* 2420 Sysboot setup (2430 is different) */
static u32 get_sysboot_value(void)
{
      return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
            (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
             OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
             OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
}

/* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 *
 * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 *  correctly.  The macro needs to look at production_id not just hawkeye.
 */
static u32 is_gpmc_muxed(void)
{
      u32 mux;
      mux = get_sysboot_value();
      if ((mux & 0xF) == 0xd)
            return 1;   /* NAND config (could be either) */
      if (mux & 0x2)          /* if mux'ed */
            return 1;
      else
            return 0;
}

static inline void __init h4_init_debug(void)
{
      int eth_cs;
      unsigned long cs_mem_base;
      unsigned int muxed, rate;
      struct clk *gpmc_fck;

      eth_cs      = H4_SMC91X_CS;

      gpmc_fck = clk_get(NULL, "gpmc_fck");     /* Always on ENABLE_ON_INIT */
      if (IS_ERR(gpmc_fck)) {
            WARN_ON(1);
            return;
      }

      clk_enable(gpmc_fck);
      rate = clk_get_rate(gpmc_fck);
      clk_disable(gpmc_fck);
      clk_put(gpmc_fck);

      if (is_gpmc_muxed())
            muxed = 0x200;
      else
            muxed = 0;

      /* Make sure CS1 timings are correct */
      gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
                    0x00011000 | muxed);

      if (rate >= 160000000) {
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
      } else if (rate >= 130000000) {
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
      } else {/* rate = 100000000 */
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
            gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
      }

      if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
            printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
            goto out;
      }

      udelay(100);

      omap_cfg_reg(M15_24XX_GPIO92);
      if (debug_card_init(cs_mem_base, H4_ETHR_GPIO_IRQ) < 0)
            gpmc_cs_free(eth_cs);

out:
      clk_disable(gpmc_fck);
      clk_put(gpmc_fck);
}

static void __init h4_init_flash(void)
{
      unsigned long base;

      if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
            printk("Can't request GPMC CS for flash\n");
            return;
      }
      h4_flash_resource.start = base;
      h4_flash_resource.end   = base + SZ_64M - 1;
}

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

static struct omap_usb_config h4_usb_config __initdata = {
#ifdef      CONFIG_MACH_OMAP2_H4_USB1
      /* NOTE:  usb1 could also be used with 3 wire signaling */
      .pins[1]    = 4,
#endif

#ifdef      CONFIG_MACH_OMAP_H4_OTG
      /* S1.10 ON -- USB OTG port
       * usb0 switched to Mini-AB port and isp1301 transceiver;
       * S2.POS3 = OFF, S2.POS4 = ON ... to allow battery charging
       */
      .otg        = 1,
      .pins[0]    = 4,
#ifdef      CONFIG_USB_GADGET_OMAP
      /* use OTG cable, or standard A-to-MiniB */
      .hmc_mode   = 0x14,     /* 0:dev/otg 1:host 2:disable */
#elif defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
      /* use OTG cable, or NONSTANDARD (B-to-MiniB) */
      .hmc_mode   = 0x11,     /* 0:host 1:host 2:disable */
#endif      /* XX */

#else
      /* S1.10 OFF -- usb "download port"
       * usb0 switched to Mini-B port and isp1105 transceiver;
       * S2.POS3 = ON, S2.POS4 = OFF ... to enable battery charging
       */
      .register_dev     = 1,
      .pins[0]    = 3,
/*    .hmc_mode   = 0x14,*/   /* 0:dev 1:host 2:disable */
      .hmc_mode   = 0x00,           /* 0:dev|otg 1:disable 2:disable */
#endif
};

static struct omap_board_config_kernel h4_config[] = {
      { OMAP_TAG_LCD,         &h4_lcd_config },
};

static void __init omap_h4_init_irq(void)
{
      omap_board_config = h4_config;
      omap_board_config_size = ARRAY_SIZE(h4_config);
      omap2_init_common_hw(NULL, NULL);
      omap_init_irq();
      omap_gpio_init();
      h4_init_flash();
}

static struct at24_platform_data m24c01 = {
      .byte_len   = SZ_1K / 8,
      .page_size  = 16,
};

static struct i2c_board_info __initdata h4_i2c_board_info[] = {
      {
            I2C_BOARD_INFO("isp1301_omap", 0x2d),
            .irq        = OMAP_GPIO_IRQ(125),
      },
      {     /* EEPROM on mainboard */
            I2C_BOARD_INFO("24c01", 0x52),
            .platform_data    = &m24c01,
      },
      {     /* EEPROM on cpu card */
            I2C_BOARD_INFO("24c01", 0x57),
            .platform_data    = &m24c01,
      },
};

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

      i2c_register_board_info(1, h4_i2c_board_info,
                  ARRAY_SIZE(h4_i2c_board_info));

      platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
      omap_usb_init(&h4_usb_config);
      omap_serial_init();
}

static void __init omap_h4_map_io(void)
{
      omap2_set_globals_242x();
      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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