arch/arm/mach-pxa/gumstix.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/gumstix.c
   3  *
   4  *  Support for the Gumstix motherboards.
   5  *
   6  *  Original Author:    Craig Hughes
   7  *  Created:    Feb 14, 2008
   8  *  Copyright:  Craig Hughes
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License version 2 as
  12  *  published by the Free Software Foundation.
  13  *
  14  *  Implemented based on lubbock.c by Nicolas Pitre and code from Craig
  15  *  Hughes
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/mtd/mtd.h>
  24 #include <linux/mtd/partitions.h>
  25
  26 #include <asm/setup.h>
  27 #include <asm/memory.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/hardware.h>
  30 #include <asm/irq.h>
  31 #include <asm/sizes.h>
  32
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/irq.h>
  36 #include <asm/mach/flash.h>
  37 #include <asm/arch/mmc.h>
  38 #include <asm/arch/udc.h>
  39 #include <asm/arch/gumstix.h>
  40
  41 #include <asm/arch/pxa-regs.h>
  42 #include <asm/arch/pxa2xx-regs.h>
  43
  44 #include "generic.h"
  45
  46 static struct resource flash_resource = {
  47         .start  = 0x00000000,
  48         .end    = SZ_64M - 1,
  49         .flags  = IORESOURCE_MEM,
  50 };
  51
  52 static struct mtd_partition gumstix_partitions[] = {
  53         {
  54                 .name =         "Bootloader",
  55                 .size =         0x00040000,
  56                 .offset =       0,
  57                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
  58         } , {
  59                 .name =         "rootfs",
  60                 .size =         MTDPART_SIZ_FULL,
  61                 .offset =       MTDPART_OFS_APPEND
  62         }
  63 };
  64
  65 static struct flash_platform_data gumstix_flash_data = {
  66         .map_name       = "cfi_probe",
  67         .parts          = gumstix_partitions,
  68         .nr_parts       = ARRAY_SIZE(gumstix_partitions),
  69         .width          = 2,
  70 };
  71
  72 static struct platform_device gumstix_flash_device = {
  73         .name           = "pxa2xx-flash",
  74         .id             = 0,
  75         .dev = {
  76                 .platform_data = &gumstix_flash_data,
  77         },
  78         .resource = &flash_resource,
  79         .num_resources = 1,
  80 };
  81
  82 static struct platform_device *devices[] __initdata = {
  83         &gumstix_flash_device,
  84 };
  85
  86 #ifdef CONFIG_MMC_PXA
  87 static struct pxamci_platform_data gumstix_mci_platform_data;
  88
  89 static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int,
  90                                 void *data)
  91 {
  92         pxa_gpio_mode(GPIO6_MMCCLK_MD);
  93         pxa_gpio_mode(GPIO53_MMCCLK_MD);
  94         pxa_gpio_mode(GPIO8_MMCCS0_MD);
  95
  96         return 0;
  97 }
  98
  99 static struct pxamci_platform_data gumstix_mci_platform_data = {
 100         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 101         .init           = gumstix_mci_init,
 102 };
 103
 104 static void __init gumstix_mmc_init(void)
 105 {
 106         pxa_set_mci_info(&gumstix_mci_platform_data);
 107 }
 108 #else
 109 static void __init gumstix_mmc_init(void)
 110 {
 111         printk(KERN_INFO "Gumstix mmc disabled\n");
 112 }
 113 #endif
 114
 115 #ifdef CONFIG_USB_GADGET_PXA2XX
 116 static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
 117         .gpio_vbus              = GPIO_GUMSTIX_USB_GPIOn,
 118         .gpio_pullup            = GPIO_GUMSTIX_USB_GPIOx,
 119 };
 120
 121 static void __init gumstix_udc_init(void)
 122 {
 123         pxa_set_udc_info(&gumstix_udc_info);
 124 }
 125 #else
 126 static void gumstix_udc_init(void)
 127 {
 128         printk(KERN_INFO "Gumstix udc is disabled\n");
 129 }
 130 #endif
 131
 132 static void __init gumstix_init(void)
 133 {
 134         gumstix_udc_init();
 135         gumstix_mmc_init();
 136         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 137 }
 138
 139 MACHINE_START(GUMSTIX, "Gumstix")
 140         .phys_io        = 0x40000000,
 141         .boot_params    = 0xa0000100, /* match u-boot bi_boot_params */
 142         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 143         .map_io         = pxa_map_io,
 144         .init_irq       = pxa25x_init_irq,
 145         .timer          = &pxa_timer,
 146         .init_machine   = gumstix_init,
 147 MACHINE_END