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
  36 static u8 ether_mac_addr[ETHER_ADDR_LEN];
  37
  38 void __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)
  69 static int lcd_bl_pin;
  70
  71 /*
  72  * LCD panel (Sharp LQ043T3DX02)
  73  */
  74 static void colibri_lcd_backlight(int on)
  75 {
  76         gpio_set_value(lcd_bl_pin, !!on);
  77 }
  78
  79 static 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
  95 static 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
 104 void __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)
 114 static 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
 140 static 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
 148 void __init colibri_pxa3xx_init_nand(void)
 149 {
 150         pxa3xx_set_nand_info(&colibri_nand_info);
 151 }
 152 #endif
 153