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colibri-pxa3xx.c

/*
 *  arch/arm/mach-pxa/colibri-pxa3xx.c
 *
 *  Common functions for all Toradex PXA3xx modules
 *
 *  Daniel Mack <daniel@caiaq.de>
 *
 *  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/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/etherdevice.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <mach/pxa3xx-regs.h>
#include <mach/mfp-pxa300.h>
#include <mach/colibri.h>
#include <mach/mmc.h>
#include <mach/pxafb.h>
#include <mach/pxa3xx_nand.h>

#include "generic.h"
#include "devices.h"

#if defined(CONFIG_AX88796)
#define ETHER_ADDR_LEN 6
static u8 ether_mac_addr[ETHER_ADDR_LEN];

void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
{
      int i;
      u64 serial = ((u64) system_serial_high << 32) | system_serial_low;

      /*
       * If the bootloader passed in a serial boot tag, which contains a
       * valid ethernet MAC, pass it to the interface. Toradex ships the
       * modules with their own bootloader which provides a valid MAC
       * this way.
       */

      for (i = 0; i < ETHER_ADDR_LEN; i++) {
            ether_mac_addr[i] = serial & 0xff;
            serial >>= 8;
      }

      if (is_valid_ether_addr(ether_mac_addr)) {
            plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
            plat_data->mac_addr = ether_mac_addr;
            printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
                  __func__);
      } else {
            plat_data->flags |= AXFLG_MAC_FROMDEV;
            printk(KERN_INFO "%s(): no valid serial boot tag found, "
                  "taking MAC from device\n", __func__);
      }
}
#endif

#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static int mmc_detect_pin;

static int colibri_pxa3xx_mci_init(struct device *dev,
                           irq_handler_t colibri_mmc_detect_int,
                           void *data)
{
      int ret;

      ret = gpio_request(mmc_detect_pin, "mmc card detect");
      if (ret)
            return ret;

      gpio_direction_input(mmc_detect_pin);
      ret = request_irq(gpio_to_irq(mmc_detect_pin), colibri_mmc_detect_int,
                    IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
                    "MMC card detect", data);
      if (ret) {
            gpio_free(mmc_detect_pin);
            return ret;
      }

      return 0;
}

static void colibri_pxa3xx_mci_exit(struct device *dev, void *data)
{
      free_irq(mmc_detect_pin, data);
      gpio_free(gpio_to_irq(mmc_detect_pin));
}

static struct pxamci_platform_data colibri_pxa3xx_mci_platform_data = {
      .detect_delay           = 20,
      .ocr_mask         = MMC_VDD_32_33 | MMC_VDD_33_34,
      .init             = colibri_pxa3xx_mci_init,
      .exit             = colibri_pxa3xx_mci_exit,
      .gpio_card_detect = -1,
      .gpio_card_ro           = -1,
      .gpio_power       = -1,
};

void __init colibri_pxa3xx_init_mmc(mfp_cfg_t *pins, int len, int detect_pin)
{
      pxa3xx_mfp_config(pins, len);
      mmc_detect_pin = detect_pin;
      pxa_set_mci_info(&colibri_pxa3xx_mci_platform_data);
}
#endif /* CONFIG_MMC_PXA || CONFIG_MMC_PXA_MODULE */

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static int lcd_bl_pin;

/*
 * LCD panel (Sharp LQ043T3DX02)
 */
static void colibri_lcd_backlight(int on)
{
      gpio_set_value(lcd_bl_pin, !!on);
}

static struct pxafb_mode_info sharp_lq43_mode = {
      .pixclock   = 101936,
      .xres       = 480,
      .yres       = 272,
      .bpp        = 32,
      .depth            = 18,
      .hsync_len      = 41,
      .left_margin    = 2,
      .right_margin   = 2,
      .vsync_len      = 10,
      .upper_margin   = 2,
      .lower_margin   = 2,
      .sync       = 0,
      .cmap_greyscale = 0,
};

static struct pxafb_mach_info sharp_lq43_info = {
      .modes            = &sharp_lq43_mode,
      .num_modes  = 1,
      .cmap_inverse     = 0,
      .cmap_static      = 0,
      .lcd_conn   = LCD_COLOR_TFT_18BPP,
      .pxafb_backlight_power = colibri_lcd_backlight,
};

void __init colibri_pxa3xx_init_lcd(int bl_pin)
{
      lcd_bl_pin = bl_pin;
      gpio_request(bl_pin, "lcd backlight");
      gpio_direction_output(bl_pin, 0);
      set_pxa_fb_info(&sharp_lq43_info);
}
#endif

#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
static struct mtd_partition colibri_nand_partitions[] = {
      {
            .name        = "bootloader",
            .offset      = 0,
            .size        = SZ_512K,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      {
            .name        = "kernel",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_4M,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      {
            .name        = "reserved",
            .offset      = MTDPART_OFS_APPEND,
            .size        = SZ_1M,
            .mask_flags  = MTD_WRITEABLE, /* force read-only */
      },
      {
            .name        = "fs",
            .offset      = MTDPART_OFS_APPEND,
            .size        = MTDPART_SIZ_FULL,
      },
};

static struct pxa3xx_nand_platform_data colibri_nand_info = {
      .enable_arbiter   = 1,
      .keep_config      = 1,
      .parts            = colibri_nand_partitions,
      .nr_parts   = ARRAY_SIZE(colibri_nand_partitions),
};

void __init colibri_pxa3xx_init_nand(void)
{
      pxa3xx_set_nand_info(&colibri_nand_info);
}
#endif


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