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
  35 static u8 ether_mac_addr[ETHER_ADDR_LEN];
  36
  37 void __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)
  68 static int lcd_bl_pin;
  69
  70 /*
  71  * LCD panel (Sharp LQ043T3DX02)
  72  */
  73 static void colibri_lcd_backlight(int on)
  74 {
  75         gpio_set_value(lcd_bl_pin, !!on);
  76 }
  77
  78 static 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
  94 static 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
 103 void __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)
 113 static 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
 139 static struct pxa3xx_nand_platform_data colibri_nand_info = {
 140         .enable_arbiter = 1,
 141         .keep_config    = 1,
 142         .num_cs         = 1,
 143         .parts[0]       = colibri_nand_partitions,
 144         .nr_parts[0]    = ARRAY_SIZE(colibri_nand_partitions),
 145 };
 146
 147 void __init colibri_pxa3xx_init_nand(void)
 148 {
 149         pxa3xx_set_nand_info(&colibri_nand_info);
 150 }
 151 #endif
 152