arch/arm/mach-pxa/generic.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/generic.c
   3  *
   4  *  Author:     Nicolas Pitre
   5  *  Created:    Jun 15, 2001
   6  *  Copyright:  MontaVista Software Inc.
   7  *
   8  * Code common to all PXA machines.
   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  * Since this file should be linked before any other machine specific file,
  15  * the __initcall() here will be executed first.  This serves as default
  16  * initialization stuff for PXA machines which can be overridden later if
  17  * need be.
  18  */
  19 #include <linux/module.h>
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/delay.h>
  23 #include <linux/device.h>
  24 #include <linux/ioport.h>
  25 #include <linux/pm.h>
  26
  27 #include <asm/hardware.h>
  28 #include <asm/irq.h>
  29 #include <asm/system.h>
  30 #include <asm/pgtable.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <asm/arch/pxa-regs.h>
  34 #include <asm/arch/udc.h>
  35 #include <asm/arch/pxafb.h>
  36 #include <asm/arch/mmc.h>
  37
  38 #include "generic.h"
  39
  40 /*
  41  * Handy function to set GPIO alternate functions
  42  */
  43
  44 void pxa_gpio_mode(int gpio_mode)
  45 {
  46         unsigned long flags;
  47         int gpio = gpio_mode & GPIO_MD_MASK_NR;
  48         int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
  49         int gafr;
  50
  51         local_irq_save(flags);
  52         if (gpio_mode & GPIO_DFLT_LOW)
  53                 GPCR(gpio) = GPIO_bit(gpio);
  54         else if (gpio_mode & GPIO_DFLT_HIGH)
  55                 GPSR(gpio) = GPIO_bit(gpio);
  56         if (gpio_mode & GPIO_MD_MASK_DIR)
  57                 GPDR(gpio) |= GPIO_bit(gpio);
  58         else
  59                 GPDR(gpio) &= ~GPIO_bit(gpio);
  60         gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
  61         GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
  62         local_irq_restore(flags);
  63 }
  64
  65 EXPORT_SYMBOL(pxa_gpio_mode);
  66
  67 /*
  68  * Routine to safely enable or disable a clock in the CKEN
  69  */
  70 void pxa_set_cken(int clock, int enable)
  71 {
  72         unsigned long flags;
  73         local_irq_save(flags);
  74
  75         if (enable)
  76                 CKEN |= clock;
  77         else
  78                 CKEN &= ~clock;
  79
  80         local_irq_restore(flags);
  81 }
  82
  83 EXPORT_SYMBOL(pxa_set_cken);
  84
  85 /*
  86  * Intel PXA2xx internal register mapping.
  87  *
  88  * Note 1: not all PXA2xx variants implement all those addresses.
  89  *
  90  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
  91  *         and cache flush area.
  92  */
  93 static struct map_desc standard_io_desc[] __initdata = {
  94  /* virtual     physical    length      type */
  95   { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */
  96   { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */
  97   { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */
  98   { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */
  99   { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */
 100   { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */
 101   { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE }  /* UNCACHED_PHYS_0 */
 102 };
 103
 104 void __init pxa_map_io(void)
 105 {
 106         iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 107         get_clk_frequency_khz(1);
 108 }
 109
 110
 111 static struct resource pxamci_resources[] = {
 112         [0] = {
 113                 .start  = 0x41100000,
 114                 .end    = 0x41100fff,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         [1] = {
 118                 .start  = IRQ_MMC,
 119                 .end    = IRQ_MMC,
 120                 .flags  = IORESOURCE_IRQ,
 121         },
 122 };
 123
 124 static u64 pxamci_dmamask = 0xffffffffUL;
 125
 126 static struct platform_device pxamci_device = {
 127         .name           = "pxa2xx-mci",
 128         .id             = -1,
 129         .dev            = {
 130                 .dma_mask = &pxamci_dmamask,
 131                 .coherent_dma_mask = 0xffffffff,
 132         },
 133         .num_resources  = ARRAY_SIZE(pxamci_resources),
 134         .resource       = pxamci_resources,
 135 };
 136
 137 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
 138 {
 139         pxamci_device.dev.platform_data = info;
 140 }
 141
 142
 143 static struct pxa2xx_udc_mach_info pxa_udc_info;
 144
 145 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
 146 {
 147         memcpy(&pxa_udc_info, info, sizeof *info);
 148 }
 149
 150 static struct resource pxa2xx_udc_resources[] = {
 151         [0] = {
 152                 .start  = 0x40600000,
 153                 .end    = 0x4060ffff,
 154                 .flags  = IORESOURCE_MEM,
 155         },
 156         [1] = {
 157                 .start  = IRQ_USB,
 158                 .end    = IRQ_USB,
 159                 .flags  = IORESOURCE_IRQ,
 160         },
 161 };
 162
 163 static u64 udc_dma_mask = ~(u32)0;
 164
 165 static struct platform_device udc_device = {
 166         .name           = "pxa2xx-udc",
 167         .id             = -1,
 168         .resource       = pxa2xx_udc_resources,
 169         .num_resources  = ARRAY_SIZE(pxa2xx_udc_resources),
 170         .dev            =  {
 171                 .platform_data  = &pxa_udc_info,
 172                 .dma_mask       = &udc_dma_mask,
 173         }
 174 };
 175
 176 static struct pxafb_mach_info pxa_fb_info;
 177
 178 void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info)
 179 {
 180         memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info));
 181 }
 182
 183 static struct resource pxafb_resources[] = {
 184         [0] = {
 185                 .start  = 0x44000000,
 186                 .end    = 0x4400ffff,
 187                 .flags  = IORESOURCE_MEM,
 188         },
 189         [1] = {
 190                 .start  = IRQ_LCD,
 191                 .end    = IRQ_LCD,
 192                 .flags  = IORESOURCE_IRQ,
 193         },
 194 };
 195
 196 static u64 fb_dma_mask = ~(u64)0;
 197
 198 static struct platform_device pxafb_device = {
 199         .name           = "pxa2xx-fb",
 200         .id             = -1,
 201         .dev            = {
 202                 .platform_data  = &pxa_fb_info,
 203                 .dma_mask       = &fb_dma_mask,
 204                 .coherent_dma_mask = 0xffffffff,
 205         },
 206         .num_resources  = ARRAY_SIZE(pxafb_resources),
 207         .resource       = pxafb_resources,
 208 };
 209
 210 static struct platform_device ffuart_device = {
 211         .name           = "pxa2xx-uart",
 212         .id             = 0,
 213 };
 214 static struct platform_device btuart_device = {
 215         .name           = "pxa2xx-uart",
 216         .id             = 1,
 217 };
 218 static struct platform_device stuart_device = {
 219         .name           = "pxa2xx-uart",
 220         .id             = 2,
 221 };
 222
 223 static struct platform_device *devices[] __initdata = {
 224         &pxamci_device,
 225         &udc_device,
 226         &pxafb_device,
 227         &ffuart_device,
 228         &btuart_device,
 229         &stuart_device,
 230 };
 231
 232 static int __init pxa_init(void)
 233 {
 234         return platform_add_devices(devices, ARRAY_SIZE(devices));
 235 }
 236
 237 subsys_initcall(pxa_init);