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 #include <asm/arch/pxa2xx-gpio.h>
  44
  45 #include "generic.h"
  46
  47 static struct resource flash_resource = {
  48         .start  = 0x00000000,
  49         .end    = SZ_64M - 1,
  50         .flags  = IORESOURCE_MEM,
  51 };
  52
  53 static struct mtd_partition gumstix_partitions[] = {
  54         {
  55                 .name =         "Bootloader",
  56                 .size =         0x00040000,
  57                 .offset =       0,
  58                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
  59         } , {
  60                 .name =         "rootfs",
  61                 .size =         MTDPART_SIZ_FULL,
  62                 .offset =       MTDPART_OFS_APPEND
  63         }
  64 };
  65
  66 static struct flash_platform_data gumstix_flash_data = {
  67         .map_name       = "cfi_probe",
  68         .parts          = gumstix_partitions,
  69         .nr_parts       = ARRAY_SIZE(gumstix_partitions),
  70         .width          = 2,
  71 };
  72
  73 static struct platform_device gumstix_flash_device = {
  74         .name           = "pxa2xx-flash",
  75         .id             = 0,
  76         .dev = {
  77                 .platform_data = &gumstix_flash_data,
  78         },
  79         .resource = &flash_resource,
  80         .num_resources = 1,
  81 };
  82
  83 static struct platform_device *devices[] __initdata = {
  84         &gumstix_flash_device,
  85 };
  86
  87 #ifdef CONFIG_MMC_PXA
  88 static struct pxamci_platform_data gumstix_mci_platform_data;
  89
  90 static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int,
  91                                 void *data)
  92 {
  93         pxa_gpio_mode(GPIO6_MMCCLK_MD);
  94         pxa_gpio_mode(GPIO53_MMCCLK_MD);
  95         pxa_gpio_mode(GPIO8_MMCCS0_MD);
  96
  97         return 0;
  98 }
  99
 100 static struct pxamci_platform_data gumstix_mci_platform_data = {
 101         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 102         .init           = gumstix_mci_init,
 103 };
 104
 105 static void __init gumstix_mmc_init(void)
 106 {
 107         pxa_set_mci_info(&gumstix_mci_platform_data);
 108 }
 109 #else
 110 static void __init gumstix_mmc_init(void)
 111 {
 112         printk(KERN_INFO "Gumstix mmc disabled\n");
 113 }
 114 #endif
 115
 116 #ifdef CONFIG_USB_GADGET_PXA2XX
 117 static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
 118         .gpio_vbus              = GPIO_GUMSTIX_USB_GPIOn,
 119         .gpio_pullup            = GPIO_GUMSTIX_USB_GPIOx,
 120 };
 121
 122 static void __init gumstix_udc_init(void)
 123 {
 124         pxa_set_udc_info(&gumstix_udc_info);
 125 }
 126 #else
 127 static void gumstix_udc_init(void)
 128 {
 129         printk(KERN_INFO "Gumstix udc is disabled\n");
 130 }
 131 #endif
 132
 133 static void __init gumstix_init(void)
 134 {
 135         gumstix_udc_init();
 136         gumstix_mmc_init();
 137         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 138 }
 139
 140 MACHINE_START(GUMSTIX, "Gumstix")
 141         .phys_io        = 0x40000000,
 142         .boot_params    = 0xa0000100, /* match u-boot bi_boot_params */
 143         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 144         .map_io         = pxa_map_io,
 145         .init_irq       = pxa25x_init_irq,
 146         .timer          = &pxa_timer,
 147         .init_machine   = gumstix_init,
 148 MACHINE_END