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
  29 #include "generic.h"
  30 #include "devices.h"
  31
  32 #if defined(CONFIG_AX88796)
  33 #define ETHER_ADDR_LEN 6
  34 static u8 ether_mac_addr[ETHER_ADDR_LEN];
  35
  36 void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
  37 {
  38         int i;
  39         u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
  40
  41         /*
  42          * If the bootloader passed in a serial boot tag, which contains a
  43          * valid ethernet MAC, pass it to the interface. Toradex ships the
  44          * modules with their own bootloader which provides a valid MAC
  45          * this way.
  46          */
  47
  48         for (i = 0; i < ETHER_ADDR_LEN; i++) {
  49                 ether_mac_addr[i] = serial & 0xff;
  50                 serial >>= 8;
  51         }
  52
  53         if (is_valid_ether_addr(ether_mac_addr)) {
  54                 plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
  55                 plat_data->mac_addr = ether_mac_addr;
  56                 printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
  57                         __func__);
  58         } else {
  59                 plat_data->flags |= AXFLG_MAC_FROMDEV;
  60                 printk(KERN_INFO "%s(): no valid serial boot tag found, "
  61                         "taking MAC from device\n", __func__);
  62         }
  63 }
  64 #endif
  65
  66 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
  67 static int mmc_detect_pin;
  68
  69 static int colibri_pxa3xx_mci_init(struct device *dev,
  70                                    irq_handler_t colibri_mmc_detect_int,
  71                                    void *data)
  72 {
  73         int ret;
  74
  75         ret = gpio_request(mmc_detect_pin, "mmc card detect");
  76         if (ret)
  77                 return ret;
  78
  79         gpio_direction_input(mmc_detect_pin);
  80         ret = request_irq(gpio_to_irq(mmc_detect_pin), colibri_mmc_detect_int,
  81                           IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  82                           "MMC card detect", data);
  83         if (ret) {
  84                 gpio_free(mmc_detect_pin);
  85                 return ret;
  86         }
  87
  88         return 0;
  89 }
  90
  91 static void colibri_pxa3xx_mci_exit(struct device *dev, void *data)
  92 {
  93         free_irq(mmc_detect_pin, data);
  94         gpio_free(gpio_to_irq(mmc_detect_pin));
  95 }
  96
  97 static struct pxamci_platform_data colibri_pxa3xx_mci_platform_data = {
  98         .detect_delay   = 20,
  99         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 100         .init           = colibri_pxa3xx_mci_init,
 101         .exit           = colibri_pxa3xx_mci_exit,
 102 };
 103
 104 void __init colibri_pxa3xx_init_mmc(mfp_cfg_t *pins, int len, int detect_pin)
 105 {
 106         pxa3xx_mfp_config(pins, len);
 107         mmc_detect_pin = detect_pin;
 108         pxa_set_mci_info(&colibri_pxa3xx_mci_platform_data);
 109 }
 110 #endif /* CONFIG_MMC_PXA || CONFIG_MMC_PXA_MODULE */
 111
 112 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 113 static int lcd_bl_pin;
 114
 115 /*
 116  * LCD panel (Sharp LQ043T3DX02)
 117  */
 118 static void colibri_lcd_backlight(int on)
 119 {
 120         gpio_set_value(lcd_bl_pin, !!on);
 121 }
 122
 123 static struct pxafb_mode_info sharp_lq43_mode = {
 124         .pixclock       = 101936,
 125         .xres           = 480,
 126         .yres           = 272,
 127         .bpp            = 32,
 128         .depth          = 18,
 129         .hsync_len      = 41,
 130         .left_margin    = 2,
 131         .right_margin   = 2,
 132         .vsync_len      = 10,
 133         .upper_margin   = 2,
 134         .lower_margin   = 2,
 135         .sync           = 0,
 136         .cmap_greyscale = 0,
 137 };
 138
 139 static struct pxafb_mach_info sharp_lq43_info = {
 140         .modes          = &sharp_lq43_mode,
 141         .num_modes      = 1,
 142         .cmap_inverse   = 0,
 143         .cmap_static    = 0,
 144         .lcd_conn       = LCD_COLOR_TFT_18BPP,
 145         .pxafb_backlight_power = colibri_lcd_backlight,
 146 };
 147
 148 void __init colibri_pxa3xx_init_lcd(int bl_pin)
 149 {
 150         lcd_bl_pin = bl_pin;
 151         gpio_request(bl_pin, "lcd backlight");
 152         gpio_direction_output(bl_pin, 0);
 153         set_pxa_fb_info(&sharp_lq43_info);
 154 }
 155 #endif
 156