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 149