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 <mach/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_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
  68 static int mmc_detect_pin;
  69
  70 static int colibri_pxa3xx_mci_init(struct device *dev,
  71                                    irq_handler_t colibri_mmc_detect_int,
  72                                    void *data)
  73 {
  74         int ret;
  75
  76         ret = gpio_request(mmc_detect_pin, "mmc card detect");
  77         if (ret)
  78                 return ret;
  79
  80         gpio_direction_input(mmc_detect_pin);
  81         ret = request_irq(gpio_to_irq(mmc_detect_pin), colibri_mmc_detect_int,
  82                           IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  83                           "MMC card detect", data);
  84         if (ret) {
  85                 gpio_free(mmc_detect_pin);
  86                 return ret;
  87         }
  88
  89         return 0;
  90 }
  91
  92 static void colibri_pxa3xx_mci_exit(struct device *dev, void *data)
  93 {
  94         free_irq(mmc_detect_pin, data);
  95         gpio_free(gpio_to_irq(mmc_detect_pin));
  96 }
  97
  98 static struct pxamci_platform_data colibri_pxa3xx_mci_platform_data = {
  99         .detect_delay           = 20,
 100         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 101         .init                   = colibri_pxa3xx_mci_init,
 102         .exit                   = colibri_pxa3xx_mci_exit,
 103         .gpio_card_detect       = -1,
 104         .gpio_card_ro           = -1,
 105         .gpio_power             = -1,
 106 };
 107
 108 void __init colibri_pxa3xx_init_mmc(mfp_cfg_t *pins, int len, int detect_pin)
 109 {
 110         pxa3xx_mfp_config(pins, len);
 111         mmc_detect_pin = detect_pin;
 112         pxa_set_mci_info(&colibri_pxa3xx_mci_platform_data);
 113 }
 114 #endif /* CONFIG_MMC_PXA || CONFIG_MMC_PXA_MODULE */
 115
 116 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 117 static int lcd_bl_pin;
 118
 119 /*
 120  * LCD panel (Sharp LQ043T3DX02)
 121  */
 122 static void colibri_lcd_backlight(int on)
 123 {
 124         gpio_set_value(lcd_bl_pin, !!on);
 125 }
 126
 127 static struct pxafb_mode_info sharp_lq43_mode = {
 128         .pixclock       = 101936,
 129         .xres           = 480,
 130         .yres           = 272,
 131         .bpp            = 32,
 132         .depth          = 18,
 133         .hsync_len      = 41,
 134         .left_margin    = 2,
 135         .right_margin   = 2,
 136         .vsync_len      = 10,
 137         .upper_margin   = 2,
 138         .lower_margin   = 2,
 139         .sync           = 0,
 140         .cmap_greyscale = 0,
 141 };
 142
 143 static struct pxafb_mach_info sharp_lq43_info = {
 144         .modes          = &sharp_lq43_mode,
 145         .num_modes      = 1,
 146         .cmap_inverse   = 0,
 147         .cmap_static    = 0,
 148         .lcd_conn       = LCD_COLOR_TFT_18BPP,
 149         .pxafb_backlight_power = colibri_lcd_backlight,
 150 };
 151
 152 void __init colibri_pxa3xx_init_lcd(int bl_pin)
 153 {
 154         lcd_bl_pin = bl_pin;
 155         gpio_request(bl_pin, "lcd backlight");
 156         gpio_direction_output(bl_pin, 0);
 157         set_pxa_fb_info(&sharp_lq43_info);
 158 }
 159 #endif
 160
 161 #if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
 162 static struct mtd_partition colibri_nand_partitions[] = {
 163         {
 164                 .name        = "bootloader",
 165                 .offset      = 0,
 166                 .size        = SZ_512K,
 167                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 168         },
 169         {
 170                 .name        = "kernel",
 171                 .offset      = MTDPART_OFS_APPEND,
 172                 .size        = SZ_4M,
 173                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 174         },
 175         {
 176                 .name        = "reserved",
 177                 .offset      = MTDPART_OFS_APPEND,
 178                 .size        = SZ_1M,
 179                 .mask_flags  = MTD_WRITEABLE, /* force read-only */
 180         },
 181         {
 182                 .name        = "fs",
 183                 .offset      = MTDPART_OFS_APPEND,
 184                 .size        = MTDPART_SIZ_FULL,
 185         },
 186 };
 187
 188 static struct pxa3xx_nand_platform_data colibri_nand_info = {
 189         .enable_arbiter = 1,
 190         .keep_config    = 1,
 191         .parts          = colibri_nand_partitions,
 192         .nr_parts       = ARRAY_SIZE(colibri_nand_partitions),
 193 };
 194
 195 void __init colibri_pxa3xx_init_nand(void)
 196 {
 197         pxa3xx_set_nand_info(&colibri_nand_info);
 198 }
 199 #endif
 200