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_MD_MASK_DIR)
  53                 GPDR(gpio) |= GPIO_bit(gpio);
  54         else
  55                 GPDR(gpio) &= ~GPIO_bit(gpio);
  56         gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
  57         GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
  58         local_irq_restore(flags);
  59 }
  60
  61 EXPORT_SYMBOL(pxa_gpio_mode);
  62
  63 /*
  64  * Routine to safely enable or disable a clock in the CKEN
  65  */
  66 void pxa_set_cken(int clock, int enable)
  67 {
  68         unsigned long flags;
  69         local_irq_save(flags);
  70
  71         if (enable)
  72                 CKEN |= clock;
  73         else
  74                 CKEN &= ~clock;
  75
  76         local_irq_restore(flags);
  77 }
  78
  79 EXPORT_SYMBOL(pxa_set_cken);
  80
  81 /*
  82  * Intel PXA2xx internal register mapping.
  83  *
  84  * Note 1: not all PXA2xx variants implement all those addresses.
  85  *
  86  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
  87  *         and cache flush area.
  88  */
  89 static struct map_desc standard_io_desc[] __initdata = {
  90  /* virtual     physical    length      type */
  91   { 0xf2000000, 0x40000000, 0x01800000, MT_DEVICE }, /* Devs */
  92   { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */
  93   { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */
  94   { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */
  95   { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */
  96   { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */
  97   { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE }  /* UNCACHED_PHYS_0 */
  98 };
  99
 100 void __init pxa_map_io(void)
 101 {
 102         iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 103         get_clk_frequency_khz(1);
 104 }
 105
 106
 107 static struct resource pxamci_resources[] = {
 108         [0] = {
 109                 .start  = 0x41100000,
 110                 .end    = 0x41100fff,
 111                 .flags  = IORESOURCE_MEM,
 112         },
 113         [1] = {
 114                 .start  = IRQ_MMC,
 115                 .end    = IRQ_MMC,
 116                 .flags  = IORESOURCE_IRQ,
 117         },
 118 };
 119
 120 static u64 pxamci_dmamask = 0xffffffffUL;
 121
 122 static struct platform_device pxamci_device = {
 123         .name           = "pxa2xx-mci",
 124         .id             = -1,
 125         .dev            = {
 126                 .dma_mask = &pxamci_dmamask,
 127                 .coherent_dma_mask = 0xffffffff,
 128         },
 129         .num_resources  = ARRAY_SIZE(pxamci_resources),
 130         .resource       = pxamci_resources,
 131 };
 132
 133 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
 134 {
 135         pxamci_device.dev.platform_data = info;
 136 }
 137 EXPORT_SYMBOL(pxa_set_mci_info);
 138
 139
 140 static struct pxa2xx_udc_mach_info pxa_udc_info;
 141
 142 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
 143 {
 144         memcpy(&pxa_udc_info, info, sizeof *info);
 145 }
 146 EXPORT_SYMBOL(pxa_set_udc_info);
 147
 148 static struct resource pxa2xx_udc_resources[] = {
 149         [0] = {
 150                 .start  = 0x40600000,
 151                 .end    = 0x4060ffff,
 152                 .flags  = IORESOURCE_MEM,
 153         },
 154         [1] = {
 155                 .start  = IRQ_USB,
 156                 .end    = IRQ_USB,
 157                 .flags  = IORESOURCE_IRQ,
 158         },
 159 };
 160
 161 static u64 udc_dma_mask = ~(u32)0;
 162
 163 static struct platform_device udc_device = {
 164         .name           = "pxa2xx-udc",
 165         .id             = -1,
 166         .resource       = pxa2xx_udc_resources,
 167         .num_resources  = ARRAY_SIZE(pxa2xx_udc_resources),
 168         .dev            =  {
 169                 .platform_data  = &pxa_udc_info,
 170                 .dma_mask       = &udc_dma_mask,
 171         }
 172 };
 173
 174 static struct pxafb_mach_info pxa_fb_info;
 175
 176 void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info)
 177 {
 178         memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info));
 179 }
 180 EXPORT_SYMBOL(set_pxa_fb_info);
 181
 182 static struct resource pxafb_resources[] = {
 183         [0] = {
 184                 .start  = 0x44000000,
 185                 .end    = 0x4400ffff,
 186                 .flags  = IORESOURCE_MEM,
 187         },
 188         [1] = {
 189                 .start  = IRQ_LCD,
 190                 .end    = IRQ_LCD,
 191                 .flags  = IORESOURCE_IRQ,
 192         },
 193 };
 194
 195 static u64 fb_dma_mask = ~(u64)0;
 196
 197 static struct platform_device pxafb_device = {
 198         .name           = "pxa2xx-fb",
 199         .id             = -1,
 200         .dev            = {
 201                 .platform_data  = &pxa_fb_info,
 202                 .dma_mask       = &fb_dma_mask,
 203                 .coherent_dma_mask = 0xffffffff,
 204         },
 205         .num_resources  = ARRAY_SIZE(pxafb_resources),
 206         .resource       = pxafb_resources,
 207 };
 208
 209 static struct platform_device ffuart_device = {
 210         .name           = "pxa2xx-uart",
 211         .id             = 0,
 212 };
 213 static struct platform_device btuart_device = {
 214         .name           = "pxa2xx-uart",
 215         .id             = 1,
 216 };
 217 static struct platform_device stuart_device = {
 218         .name           = "pxa2xx-uart",
 219         .id             = 2,
 220 };
 221
 222 static struct platform_device *devices[] __initdata = {
 223         &pxamci_device,
 224         &udc_device,
 225         &pxafb_device,
 226         &ffuart_device,
 227         &btuart_device,
 228         &stuart_device,
 229 };
 230
 231 static int __init pxa_init(void)
 232 {
 233         return platform_add_devices(devices, ARRAY_SIZE(devices));
 234 }
 235
 236 subsys_initcall(pxa_init);