LXR linux/arch/arm/mach-pxa/colibri-pxa3xx.c

   1/*
   2 *  arch/arm/mach-pxa/colibri-pxa3xx.c
   3 *
   4 *  Common functions for all Toradex PXA3xx modules
   5 *
   6 *  Daniel Mack <daniel@caiaq.de>
   7 *
   8 *  This program is free software; you can redistribute it and/or modify
   9 *  it under the terms of the GNU General Public License version 2 as
  10 *  published by the Free Software Foundation.
  11 */
  12
  13#include <linux/init.h>
  14#include <linux/kernel.h>
  15#include <linux/platform_device.h>
  16#include <linux/gpio.h>
  17#include <linux/etherdevice.h>
  18#include <asm/mach-types.h>
  19#include <mach/hardware.h>
  20#include <asm/sizes.h>
  21#include <asm/mach/arch.h>
  22#include <asm/mach/irq.h>
  23#include <mach/pxa3xx-regs.h>
  24#include <mach/mfp-pxa300.h>
  25#include <mach/colibri.h>
  26#include <mach/mmc.h>
  27#include <mach/pxafb.h>
  28#include <plat/pxa3xx_nand.h>
  29
  30#include "generic.h"
  31#include "devices.h"
  32
  33#if defined(CONFIG_AX88796)
  34#define ETHER_ADDR_LEN 6
  35static u8 ether_mac_addr[ETHER_ADDR_LEN];
  36
  37void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
  38{
  39        int i;
  40        u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
  41
  42        /*
  43         * If the bootloader passed in a serial boot tag, which contains a
  44         * valid ethernet MAC, pass it to the interface. Toradex ships the
  45         * modules with their own bootloader which provides a valid MAC
  46         * this way.
  47         */
  48
  49        for (i = 0; i < ETHER_ADDR_LEN; i++) {
  50                ether_mac_addr[i] = serial & 0xff;
  51                serial >>= 8;
  52        }
  53
  54        if (is_valid_ether_addr(ether_mac_addr)) {
  55                plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
  56                plat_data->mac_addr = ether_mac_addr;
  57                printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
  58                        __func__);
  59        } else {
  60                plat_data->flags |= AXFLG_MAC_FROMDEV;
  61                printk(KERN_INFO "%s(): no valid serial boot tag found, "
  62                        "taking MAC from device\n", __func__);
  63        }
  64}
  65#endif
  66
  67#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
  68static int lcd_bl_pin;
  69
  70/*
  71 * LCD panel (Sharp LQ043T3DX02)
  72 */
  73static void colibri_lcd_backlight(int on)
  74{
  75        gpio_set_value(lcd_bl_pin, !!on);
  76}
  77
  78static struct pxafb_mode_info sharp_lq43_mode = {
  79        .pixclock       = 101936,
  80        .xres           = 480,
  81        .yres           = 272,
  82        .bpp            = 32,
  83        .depth          = 18,
  84        .hsync_len      = 41,
  85        .left_margin    = 2,
  86        .right_margin   = 2,
  87        .vsync_len      = 10,
  88        .upper_margin   = 2,
  89        .lower_margin   = 2,
  90        .sync           = 0,
  91        .cmap_greyscale = 0,
  92};
  93
  94static struct pxafb_mach_info sharp_lq43_info = {
  95        .modes          = &sharp_lq43_mode,
  96        .num_modes      = 1,
  97        .cmap_inverse   = 0,
  98        .cmap_static    = 0,
  99        .lcd_conn       = LCD_COLOR_TFT_18BPP,
 100        .pxafb_backlight_power = colibri_lcd_backlight,
 101};
 102
 103void __init colibri_pxa3xx_init_lcd(int bl_pin)
 104{
 105        lcd_bl_pin = bl_pin;
 106        gpio_request(bl_pin, "lcd backlight");
 107        gpio_direction_output(bl_pin, 0);
 108        pxa_set_fb_info(NULL, &sharp_lq43_info);
 109}
 110#endif
 111
 112#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
 113static struct mtd_partition colibri_nand_partitions[] = {
 114        {
 115                .name        = "bootloader",
 116                .offset      = 0,
 117                .size        = SZ_512K,
 118                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 119        },
 120        {
 121                .name        = "kernel",
 122                .offset      = MTDPART_OFS_APPEND,
 123                .size        = SZ_4M,
 124                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 125        },
 126        {
 127                .name        = "reserved",
 128                .offset      = MTDPART_OFS_APPEND,
 129                .size        = SZ_1M,
 130                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 131        },
 132        {
 133                .name        = "fs",
 134                .offset      = MTDPART_OFS_APPEND,
 135                .size        = MTDPART_SIZ_FULL,
 136        },
 137};
 138
 139static struct pxa3xx_nand_platform_data colibri_nand_info = {
 140        .enable_arbiter = 1,
 141        .keep_config    = 1,
 142        .parts          = colibri_nand_partitions,
 143        .nr_parts       = ARRAY_SIZE(colibri_nand_partitions),
 144};
 145
 146void __init colibri_pxa3xx_init_nand(void)
 147{
 148        pxa3xx_set_nand_info(&colibri_nand_info);
 149}
 150#endif
 151
 152