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/system_info.h>
  22#include <asm/mach/arch.h>
  23#include <asm/mach/irq.h>
  24#include <mach/pxa3xx-regs.h>
  25#include <mach/mfp-pxa300.h>
  26#include <mach/colibri.h>
  27#include <linux/platform_data/mmc-pxamci.h>
  28#include <linux/platform_data/video-pxafb.h>
  29#include <linux/platform_data/mtd-nand-pxa3xx.h>
  30
  31#include "generic.h"
  32#include "devices.h"
  33
  34#if defined(CONFIG_AX88796)
  35#define ETHER_ADDR_LEN 6
  36static u8 ether_mac_addr[ETHER_ADDR_LEN];
  37
  38void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
  39{
  40        int i;
  41        u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
  42
  43        /*
  44         * If the bootloader passed in a serial boot tag, which contains a
  45         * valid ethernet MAC, pass it to the interface. Toradex ships the
  46         * modules with their own bootloader which provides a valid MAC
  47         * this way.
  48         */
  49
  50        for (i = 0; i < ETHER_ADDR_LEN; i++) {
  51                ether_mac_addr[i] = serial & 0xff;
  52                serial >>= 8;
  53        }
  54
  55        if (is_valid_ether_addr(ether_mac_addr)) {
  56                plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
  57                plat_data->mac_addr = ether_mac_addr;
  58                printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
  59                        __func__);
  60        } else {
  61                plat_data->flags |= AXFLG_MAC_FROMDEV;
  62                printk(KERN_INFO "%s(): no valid serial boot tag found, "
  63                        "taking MAC from device\n", __func__);
  64        }
  65}
  66#endif
  67
  68#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
  69static int lcd_bl_pin;
  70
  71/*
  72 * LCD panel (Sharp LQ043T3DX02)
  73 */
  74static void colibri_lcd_backlight(int on)
  75{
  76        gpio_set_value(lcd_bl_pin, !!on);
  77}
  78
  79static struct pxafb_mode_info sharp_lq43_mode = {
  80        .pixclock       = 101936,
  81        .xres           = 480,
  82        .yres           = 272,
  83        .bpp            = 32,
  84        .depth          = 18,
  85        .hsync_len      = 41,
  86        .left_margin    = 2,
  87        .right_margin   = 2,
  88        .vsync_len      = 10,
  89        .upper_margin   = 2,
  90        .lower_margin   = 2,
  91        .sync           = 0,
  92        .cmap_greyscale = 0,
  93};
  94
  95static struct pxafb_mach_info sharp_lq43_info = {
  96        .modes          = &sharp_lq43_mode,
  97        .num_modes      = 1,
  98        .cmap_inverse   = 0,
  99        .cmap_static    = 0,
 100        .lcd_conn       = LCD_COLOR_TFT_18BPP,
 101        .pxafb_backlight_power = colibri_lcd_backlight,
 102};
 103
 104void __init colibri_pxa3xx_init_lcd(int bl_pin)
 105{
 106        lcd_bl_pin = bl_pin;
 107        gpio_request(bl_pin, "lcd backlight");
 108        gpio_direction_output(bl_pin, 0);
 109        pxa_set_fb_info(NULL, &sharp_lq43_info);
 110}
 111#endif
 112
 113#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
 114static struct mtd_partition colibri_nand_partitions[] = {
 115        {
 116                .name        = "bootloader",
 117                .offset      = 0,
 118                .size        = SZ_512K,
 119                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 120        },
 121        {
 122                .name        = "kernel",
 123                .offset      = MTDPART_OFS_APPEND,
 124                .size        = SZ_4M,
 125                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 126        },
 127        {
 128                .name        = "reserved",
 129                .offset      = MTDPART_OFS_APPEND,
 130                .size        = SZ_1M,
 131                .mask_flags  = MTD_WRITEABLE, /* force read-only */
 132        },
 133        {
 134                .name        = "fs",
 135                .offset      = MTDPART_OFS_APPEND,
 136                .size        = MTDPART_SIZ_FULL,
 137        },
 138};
 139
 140static struct pxa3xx_nand_platform_data colibri_nand_info = {
 141        .enable_arbiter = 1,
 142        .keep_config    = 1,
 143        .num_cs         = 1,
 144        .parts[0]       = colibri_nand_partitions,
 145        .nr_parts[0]    = ARRAY_SIZE(colibri_nand_partitions),
 146};
 147
 148void __init colibri_pxa3xx_init_nand(void)
 149{
 150        pxa3xx_set_nand_info(&colibri_nand_info);
 151}
 152#endif
 153
 154