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board-palmte.c

/*
 * linux/arch/arm/mach-omap1/board-palmte.c
 *
 * Modified from board-generic.c
 *
 * Support for the Palm Tungsten E PDA.
 *
 * Original version : Laurent Gonzalez
 *
 * Maintainers : http://palmtelinux.sf.net
 *                palmtelinux-developpers@lists.sf.net
 *
 * Copyright (c) 2006 Andrzej Zaborowski  <balrog@zabor.org>
 *
 * 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/input.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/spi/spi.h>
#include <linux/interrupt.h>
#include <linux/apm-emulation.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/mux.h>
#include <asm/arch/usb.h>
#include <asm/arch/tc.h>
#include <asm/arch/dma.h>
#include <asm/arch/board.h>
#include <asm/arch/irda.h>
#include <asm/arch/keypad.h>
#include <asm/arch/common.h>
#include <asm/arch/mcbsp.h>
#include <asm/arch/omap-alsa.h>

static void __init omap_palmte_init_irq(void)
{
      omap1_init_common_hw();
      omap_init_irq();
      omap_gpio_init();
}

static const int palmte_keymap[] = {
      KEY(0, 0, KEY_F1),            /* Calendar */
      KEY(0, 1, KEY_F2),            /* Contacts */
      KEY(0, 2, KEY_F3),            /* Tasks List */
      KEY(0, 3, KEY_F4),            /* Note Pad */
      KEY(0, 4, KEY_POWER),
      KEY(1, 0, KEY_LEFT),
      KEY(1, 1, KEY_DOWN),
      KEY(1, 2, KEY_UP),
      KEY(1, 3, KEY_RIGHT),
      KEY(1, 4, KEY_ENTER),
      0,
};

static struct omap_kp_platform_data palmte_kp_data = {
      .rows = 8,
      .cols = 8,
      .keymap = (int *) palmte_keymap,
      .rep  = 1,
      .delay      = 12,
};

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

static struct platform_device palmte_kp_device = {
      .name       = "omap-keypad",
      .id         = -1,
      .dev        = {
            .platform_data    = &palmte_kp_data,
      },
      .num_resources    = ARRAY_SIZE(palmte_kp_resources),
      .resource   = palmte_kp_resources,
};

static struct mtd_partition palmte_rom_partitions[] = {
      /* PalmOS "Small ROM", contains the bootloader and the debugger */
      {
            .name       = "smallrom",
            .offset           = 0,
            .size       = 0xa000,
            .mask_flags = MTD_WRITEABLE,
      },
      /* PalmOS "Big ROM", a filesystem with all the OS code and data */
      {
            .name       = "bigrom",
            .offset           = SZ_128K,
            /*
             * 0x5f0000 bytes big in the multi-language ("EFIGS") version,
             * 0x7b0000 bytes in the English-only ("enUS") version.
             */
            .size       = 0x7b0000,
            .mask_flags = MTD_WRITEABLE,
      },
};

static struct flash_platform_data palmte_rom_data = {
      .map_name   = "map_rom",
      .width            = 2,
      .parts            = palmte_rom_partitions,
      .nr_parts   = ARRAY_SIZE(palmte_rom_partitions),
};

static struct resource palmte_rom_resource = {
      .start            = OMAP_CS0_PHYS,
      .end        = OMAP_CS0_PHYS + SZ_8M - 1,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device palmte_rom_device = {
      .name       = "omapflash",
      .id         = -1,
      .dev        = {
            .platform_data    = &palmte_rom_data,
      },
      .num_resources    = 1,
      .resource   = &palmte_rom_resource,
};

static struct platform_device palmte_lcd_device = {
      .name       = "lcd_palmte",
      .id         = -1,
};

static struct omap_backlight_config palmte_backlight_config = {
      .default_intensity      = 0xa0,
};

static struct platform_device palmte_backlight_device = {
      .name       = "omap-bl",
      .id         = -1,
      .dev        = {
            .platform_data    = &palmte_backlight_config,
      },
};

static struct omap_irda_config palmte_irda_config = {
      .transceiver_cap  = IR_SIRMODE,
      .rx_channel       = OMAP_DMA_UART3_RX,
      .tx_channel       = OMAP_DMA_UART3_TX,
      .dest_start       = UART3_THR,
      .src_start        = UART3_RHR,
      .tx_trigger       = 0,
      .rx_trigger       = 0,
};

static struct resource palmte_irda_resources[] = {
      [0]   = {
            .start      = INT_UART3,
            .end  = INT_UART3,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device palmte_irda_device = {
      .name       = "omapirda",
      .id         = -1,
      .dev        = {
            .platform_data    = &palmte_irda_config,
      },
      .num_resources    = ARRAY_SIZE(palmte_irda_resources),
      .resource   = palmte_irda_resources,
};

static struct platform_device *palmte_devices[] __initdata = {
      &palmte_rom_device,
      &palmte_kp_device,
      &palmte_lcd_device,
      &palmte_backlight_device,
      &palmte_irda_device,
};

static struct omap_usb_config palmte_usb_config __initdata = {
      .register_dev     = 1,  /* Mini-B only receptacle */
      .hmc_mode   = 0,
      .pins[0]    = 2,
};

static struct omap_mmc_config palmte_mmc_config __initdata = {
      .mmc[0]           = {
            .enabled    = 1,
            .wp_pin           = PALMTE_MMC_WP_GPIO,
            .power_pin  = PALMTE_MMC_POWER_GPIO,
            .switch_pin = PALMTE_MMC_SWITCH_GPIO,
      },
};

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

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

static struct omap_mcbsp_reg_cfg palmte_mcbsp1_regs = {
      .spcr2      = FRST | GRST | XRST | XINTM(3),
      .xcr2 = XDATDLY(1) | XFIG,
      .xcr1 = XWDLEN1(OMAP_MCBSP_WORD_32),
      .pcr0 = SCLKME | FSXP | CLKXP,
};

static struct omap_alsa_codec_config palmte_alsa_config = {
      .name             = "TSC2102 audio",
      .mcbsp_regs_alsa  = &palmte_mcbsp1_regs,
      .codec_configure_dev    = NULL,     /* tsc2102_configure, */
      .codec_set_samplerate   = NULL,     /* tsc2102_set_samplerate, */
      .codec_clock_setup      = NULL,     /* tsc2102_clock_setup, */
      .codec_clock_on         = NULL,     /* tsc2102_clock_on, */
      .codec_clock_off  = NULL,     /* tsc2102_clock_off, */
      .get_default_samplerate = NULL,     /* tsc2102_get_default_samplerate, */
};

#ifdef CONFIG_APM
/*
 * Values measured in 10 minute intervals averaged over 10 samples.
 * May differ slightly from device to device but should be accurate
 * enough to give basic idea of battery life left and trigger
 * potential alerts.
 */
static const int palmte_battery_sample[] = {
      2194, 2157, 2138, 2120,
      2104, 2089, 2075, 2061,
      2048, 2038, 2026, 2016,
      2008, 1998, 1989, 1980,
      1970, 1958, 1945, 1928,
      1910, 1888, 1860, 1827,
      1791, 1751, 1709, 1656,
};

#define INTERVAL        10
#define BATTERY_HIGH_TRESHOLD 66
#define BATTERY_LOW_TRESHOLD  33

static void palmte_get_power_status(struct apm_power_info *info, int *battery)
{
      int charging, batt, hi, lo, mid;

      charging = !omap_get_gpio_datain(PALMTE_DC_GPIO);
      batt = battery[0];
      if (charging)
            batt -= 60;

      hi = ARRAY_SIZE(palmte_battery_sample);
      lo = 0;

      info->battery_flag = 0;
      info->units = APM_UNITS_MINS;

      if (batt > palmte_battery_sample[lo]) {
            info->battery_life = 100;
            info->time = INTERVAL * ARRAY_SIZE(palmte_battery_sample);
      } else if (batt <= palmte_battery_sample[hi - 1]) {
            info->battery_life = 0;
            info->time = 0;
      } else {
            while (hi > lo + 1) {
                  mid = (hi + lo) >> 1;
                  if (batt <= palmte_battery_sample[mid])
                        lo = mid;
                  else
                        hi = mid;
            }

            mid = palmte_battery_sample[lo] - palmte_battery_sample[hi];
            hi = palmte_battery_sample[lo] - batt;
            info->battery_life = 100 - (100 * lo + 100 * hi / mid) /
                  ARRAY_SIZE(palmte_battery_sample);
            info->time = INTERVAL * (ARRAY_SIZE(palmte_battery_sample) -
                        lo) - INTERVAL * hi / mid;
      }

      if (charging) {
            info->ac_line_status = APM_AC_ONLINE;
            info->battery_status = APM_BATTERY_STATUS_CHARGING;
            info->battery_flag |= APM_BATTERY_FLAG_CHARGING;
      } else {
            info->ac_line_status = APM_AC_OFFLINE;
            if (info->battery_life > BATTERY_HIGH_TRESHOLD)
                  info->battery_status = APM_BATTERY_STATUS_HIGH;
            else if (info->battery_life > BATTERY_LOW_TRESHOLD)
                  info->battery_status = APM_BATTERY_STATUS_LOW;
            else
                  info->battery_status = APM_BATTERY_STATUS_CRITICAL;
      }

      if (info->battery_life > BATTERY_HIGH_TRESHOLD)
            info->battery_flag |= APM_BATTERY_FLAG_HIGH;
      else if (info->battery_life > BATTERY_LOW_TRESHOLD)
            info->battery_flag |= APM_BATTERY_FLAG_LOW;
      else
            info->battery_flag |= APM_BATTERY_FLAG_CRITICAL;
}
#else
#define palmte_get_power_status     NULL
#endif

static struct omap_board_config_kernel palmte_config[] __initdata = {
      { OMAP_TAG_USB,         &palmte_usb_config },
      { OMAP_TAG_MMC,         &palmte_mmc_config },
      { OMAP_TAG_LCD,         &palmte_lcd_config },
      { OMAP_TAG_UART,  &palmte_uart_config },
};

static struct spi_board_info palmte_spi_info[] __initdata = {
      {
            .modalias   = "tsc2102",
            .bus_num    = 2,  /* uWire (officially) */
            .chip_select      = 0,  /* As opposed to 3 */
            .irq        = OMAP_GPIO_IRQ(PALMTE_PINTDAV_GPIO),
            .max_speed_hz     = 8000000,
      },
};

static void palmte_headphones_detect(void *data, int state)
{
      if (state) {
            /* Headphones connected, disable speaker */
            omap_set_gpio_dataout(PALMTE_SPEAKER_GPIO, 0);
            printk(KERN_INFO "PM: speaker off\n");
      } else {
            /* Headphones unplugged, re-enable speaker */
            omap_set_gpio_dataout(PALMTE_SPEAKER_GPIO, 1);
            printk(KERN_INFO "PM: speaker on\n");
      }
}

static void __init palmte_misc_gpio_setup(void)
{
      /* Set TSC2102 PINTDAV pin as input (used by TSC2102 driver) */
      if (omap_request_gpio(PALMTE_PINTDAV_GPIO)) {
            printk(KERN_ERR "Could not reserve PINTDAV GPIO!\n");
            return;
      }
      omap_set_gpio_direction(PALMTE_PINTDAV_GPIO, 1);

      /* Set USB-or-DC-IN pin as input (unused) */
      if (omap_request_gpio(PALMTE_USB_OR_DC_GPIO)) {
            printk(KERN_ERR "Could not reserve cable signal GPIO!\n");
            return;
      }
      omap_set_gpio_direction(PALMTE_USB_OR_DC_GPIO, 1);
}

static void __init omap_palmte_init(void)
{
      omap_board_config = palmte_config;
      omap_board_config_size = ARRAY_SIZE(palmte_config);

      platform_add_devices(palmte_devices, ARRAY_SIZE(palmte_devices));

      spi_register_board_info(palmte_spi_info, ARRAY_SIZE(palmte_spi_info));
      palmte_misc_gpio_setup();
      omap_serial_init();
      omap_register_i2c_bus(1, 100, NULL, 0);
}

static void __init omap_palmte_map_io(void)
{
      omap1_map_common_io();
}

MACHINE_START(OMAP_PALMTE, "OMAP310 based Palm Tungsten E")
      .phys_io    = 0xfff00000,
      .io_pg_offst      = ((0xfef00000) >> 18) & 0xfffc,
      .boot_params      = 0x10000100,
      .map_io           = omap_palmte_map_io,
      .init_irq   = omap_palmte_init_irq,
      .init_machine     = omap_palmte_init,
      .timer            = &omap_timer,
MACHINE_END

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