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/platform_device.h>
  24 #include <linux/ioport.h>
  25 #include <linux/pm.h>
  26 #include <linux/string.h>
  27
  28 #include <asm/hardware.h>
  29 #include <asm/irq.h>
  30 #include <asm/system.h>
  31 #include <asm/pgtable.h>
  32 #include <asm/mach/map.h>
  33
  34 #include <asm/arch/pxa-regs.h>
  35 #include <asm/arch/gpio.h>
  36 #include <asm/arch/udc.h>
  37 #include <asm/arch/pxafb.h>
  38 #include <asm/arch/mmc.h>
  39 #include <asm/arch/irda.h>
  40 #include <asm/arch/i2c.h>
  41
  42 #include "devices.h"
  43 #include "generic.h"
  44
  45 /*
  46  * Handy function to set GPIO alternate functions
  47  */
  48
  49 int pxa_gpio_mode(int gpio_mode)
  50 {
  51         unsigned long flags;
  52         int gpio = gpio_mode & GPIO_MD_MASK_NR;
  53         int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
  54         int gafr;
  55
  56         if (gpio > PXA_LAST_GPIO)
  57                 return -EINVAL;
  58
  59         local_irq_save(flags);
  60         if (gpio_mode & GPIO_DFLT_LOW)
  61                 GPCR(gpio) = GPIO_bit(gpio);
  62         else if (gpio_mode & GPIO_DFLT_HIGH)
  63                 GPSR(gpio) = GPIO_bit(gpio);
  64         if (gpio_mode & GPIO_MD_MASK_DIR)
  65                 GPDR(gpio) |= GPIO_bit(gpio);
  66         else
  67                 GPDR(gpio) &= ~GPIO_bit(gpio);
  68         gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
  69         GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
  70         local_irq_restore(flags);
  71
  72         return 0;
  73 }
  74
  75 EXPORT_SYMBOL(pxa_gpio_mode);
  76
  77 /*
  78  * Return GPIO level
  79  */
  80 int pxa_gpio_get_value(unsigned gpio)
  81 {
  82         return __gpio_get_value(gpio);
  83 }
  84
  85 EXPORT_SYMBOL(pxa_gpio_get_value);
  86
  87 /*
  88  * Set output GPIO level
  89  */
  90 void pxa_gpio_set_value(unsigned gpio, int value)
  91 {
  92         __gpio_set_value(gpio, value);
  93 }
  94
  95 EXPORT_SYMBOL(pxa_gpio_set_value);
  96
  97 /*
  98  * Routine to safely enable or disable a clock in the CKEN
  99  */
 100 void pxa_set_cken(int clock, int enable)
 101 {
 102         unsigned long flags;
 103         local_irq_save(flags);
 104
 105         if (enable)
 106                 CKEN |= (1 << clock);
 107         else
 108                 CKEN &= ~(1 << clock);
 109
 110         local_irq_restore(flags);
 111 }
 112
 113 EXPORT_SYMBOL(pxa_set_cken);
 114
 115 /*
 116  * Intel PXA2xx internal register mapping.
 117  *
 118  * Note 1: not all PXA2xx variants implement all those addresses.
 119  *
 120  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 121  *         and cache flush area.
 122  */
 123 static struct map_desc standard_io_desc[] __initdata = {
 124         {       /* Devs */
 125                 .virtual        =  0xf2000000,
 126                 .pfn            = __phys_to_pfn(0x40000000),
 127                 .length         = 0x02000000,
 128                 .type           = MT_DEVICE
 129         }, {    /* LCD */
 130                 .virtual        =  0xf4000000,
 131                 .pfn            = __phys_to_pfn(0x44000000),
 132                 .length         = 0x00100000,
 133                 .type           = MT_DEVICE
 134         }, {    /* Mem Ctl */
 135                 .virtual        =  0xf6000000,
 136                 .pfn            = __phys_to_pfn(0x48000000),
 137                 .length         = 0x00100000,
 138                 .type           = MT_DEVICE
 139         }, {    /* USB host */
 140                 .virtual        =  0xf8000000,
 141                 .pfn            = __phys_to_pfn(0x4c000000),
 142                 .length         = 0x00100000,
 143                 .type           = MT_DEVICE
 144         }, {    /* Camera */
 145                 .virtual        =  0xfa000000,
 146                 .pfn            = __phys_to_pfn(0x50000000),
 147                 .length         = 0x00100000,
 148                 .type           = MT_DEVICE
 149         }, {    /* IMem ctl */
 150                 .virtual        =  0xfe000000,
 151                 .pfn            = __phys_to_pfn(0x58000000),
 152                 .length         = 0x00100000,
 153                 .type           = MT_DEVICE
 154         }, {    /* UNCACHED_PHYS_0 */
 155                 .virtual        = 0xff000000,
 156                 .pfn            = __phys_to_pfn(0x00000000),
 157                 .length         = 0x00100000,
 158                 .type           = MT_DEVICE
 159         }
 160 };
 161
 162 void __init pxa_map_io(void)
 163 {
 164         iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 165         get_clk_frequency_khz(1);
 166 }
 167
 168
 169 static struct resource pxamci_resources[] = {
 170         [0] = {
 171                 .start  = 0x41100000,
 172                 .end    = 0x41100fff,
 173                 .flags  = IORESOURCE_MEM,
 174         },
 175         [1] = {
 176                 .start  = IRQ_MMC,
 177                 .end    = IRQ_MMC,
 178                 .flags  = IORESOURCE_IRQ,
 179         },
 180 };
 181
 182 static u64 pxamci_dmamask = 0xffffffffUL;
 183
 184 struct platform_device pxa_device_mci = {
 185         .name           = "pxa2xx-mci",
 186         .id             = -1,
 187         .dev            = {
 188                 .dma_mask = &pxamci_dmamask,
 189                 .coherent_dma_mask = 0xffffffff,
 190         },
 191         .num_resources  = ARRAY_SIZE(pxamci_resources),
 192         .resource       = pxamci_resources,
 193 };
 194
 195 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
 196 {
 197         pxa_device_mci.dev.platform_data = info;
 198 }
 199
 200
 201 static struct pxa2xx_udc_mach_info pxa_udc_info;
 202
 203 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
 204 {
 205         memcpy(&pxa_udc_info, info, sizeof *info);
 206 }
 207
 208 static struct resource pxa2xx_udc_resources[] = {
 209         [0] = {
 210                 .start  = 0x40600000,
 211                 .end    = 0x4060ffff,
 212                 .flags  = IORESOURCE_MEM,
 213         },
 214         [1] = {
 215                 .start  = IRQ_USB,
 216                 .end    = IRQ_USB,
 217                 .flags  = IORESOURCE_IRQ,
 218         },
 219 };
 220
 221 static u64 udc_dma_mask = ~(u32)0;
 222
 223 struct platform_device pxa_device_udc = {
 224         .name           = "pxa2xx-udc",
 225         .id             = -1,
 226         .resource       = pxa2xx_udc_resources,
 227         .num_resources  = ARRAY_SIZE(pxa2xx_udc_resources),
 228         .dev            =  {
 229                 .platform_data  = &pxa_udc_info,
 230                 .dma_mask       = &udc_dma_mask,
 231         }
 232 };
 233
 234 static struct resource pxafb_resources[] = {
 235         [0] = {
 236                 .start  = 0x44000000,
 237                 .end    = 0x4400ffff,
 238                 .flags  = IORESOURCE_MEM,
 239         },
 240         [1] = {
 241                 .start  = IRQ_LCD,
 242                 .end    = IRQ_LCD,
 243                 .flags  = IORESOURCE_IRQ,
 244         },
 245 };
 246
 247 static u64 fb_dma_mask = ~(u64)0;
 248
 249 struct platform_device pxa_device_fb = {
 250         .name           = "pxa2xx-fb",
 251         .id             = -1,
 252         .dev            = {
 253                 .dma_mask       = &fb_dma_mask,
 254                 .coherent_dma_mask = 0xffffffff,
 255         },
 256         .num_resources  = ARRAY_SIZE(pxafb_resources),
 257         .resource       = pxafb_resources,
 258 };
 259
 260 void __init set_pxa_fb_info(struct pxafb_mach_info *info)
 261 {
 262         pxa_device_fb.dev.platform_data = info;
 263 }
 264
 265 void __init set_pxa_fb_parent(struct device *parent_dev)
 266 {
 267         pxa_device_fb.dev.parent = parent_dev;
 268 }
 269
 270 struct platform_device pxa_device_ffuart= {
 271         .name           = "pxa2xx-uart",
 272         .id             = 0,
 273 };
 274 struct platform_device pxa_device_btuart = {
 275         .name           = "pxa2xx-uart",
 276         .id             = 1,
 277 };
 278 struct platform_device pxa_device_stuart = {
 279         .name           = "pxa2xx-uart",
 280         .id             = 2,
 281 };
 282 struct platform_device pxa_device_hwuart = {
 283         .name           = "pxa2xx-uart",
 284         .id             = 3,
 285 };
 286
 287 static struct resource pxai2c_resources[] = {
 288         {
 289                 .start  = 0x40301680,
 290                 .end    = 0x403016a3,
 291                 .flags  = IORESOURCE_MEM,
 292         }, {
 293                 .start  = IRQ_I2C,
 294                 .end    = IRQ_I2C,
 295                 .flags  = IORESOURCE_IRQ,
 296         },
 297 };
 298
 299 struct platform_device pxa_device_i2c = {
 300         .name           = "pxa2xx-i2c",
 301         .id             = 0,
 302         .resource       = pxai2c_resources,
 303         .num_resources  = ARRAY_SIZE(pxai2c_resources),
 304 };
 305
 306 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
 307 {
 308         pxa_device_i2c.dev.platform_data = info;
 309 }
 310
 311 static struct resource pxai2s_resources[] = {
 312         {
 313                 .start  = 0x40400000,
 314                 .end    = 0x40400083,
 315                 .flags  = IORESOURCE_MEM,
 316         }, {
 317                 .start  = IRQ_I2S,
 318                 .end    = IRQ_I2S,
 319                 .flags  = IORESOURCE_IRQ,
 320         },
 321 };
 322
 323 struct platform_device pxa_device_i2s = {
 324         .name           = "pxa2xx-i2s",
 325         .id             = -1,
 326         .resource       = pxai2s_resources,
 327         .num_resources  = ARRAY_SIZE(pxai2s_resources),
 328 };
 329
 330 static u64 pxaficp_dmamask = ~(u32)0;
 331
 332 struct platform_device pxa_device_ficp = {
 333         .name           = "pxa2xx-ir",
 334         .id             = -1,
 335         .dev            = {
 336                 .dma_mask = &pxaficp_dmamask,
 337                 .coherent_dma_mask = 0xffffffff,
 338         },
 339 };
 340
 341 void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
 342 {
 343         pxa_device_ficp.dev.platform_data = info;
 344 }
 345
 346 struct platform_device pxa_device_rtc = {
 347         .name           = "sa1100-rtc",
 348         .id             = -1,
 349 };