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  * Get the clock frequency as reflected by CCCR and the turbo flag.
  47  * We assume these values have been applied via a fcs.
  48  * If info is not 0 we also display the current settings.
  49  */
  50 unsigned int get_clk_frequency_khz(int info)
  51 {
  52         if (cpu_is_pxa21x() || cpu_is_pxa25x())
  53                 return pxa25x_get_clk_frequency_khz(info);
  54         else
  55                 return pxa27x_get_clk_frequency_khz(info);
  56 }
  57 EXPORT_SYMBOL(get_clk_frequency_khz);
  58
  59 /*
  60  * Return the current memory clock frequency in units of 10kHz
  61  */
  62 unsigned int get_memclk_frequency_10khz(void)
  63 {
  64         if (cpu_is_pxa21x() || cpu_is_pxa25x())
  65                 return pxa25x_get_memclk_frequency_10khz();
  66         else
  67                 return pxa27x_get_memclk_frequency_10khz();
  68 }
  69 EXPORT_SYMBOL(get_memclk_frequency_10khz);
  70
  71 /*
  72  * Handy function to set GPIO alternate functions
  73  */
  74
  75 int pxa_gpio_mode(int gpio_mode)
  76 {
  77         unsigned long flags;
  78         int gpio = gpio_mode & GPIO_MD_MASK_NR;
  79         int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
  80         int gafr;
  81
  82         if (gpio > PXA_LAST_GPIO)
  83                 return -EINVAL;
  84
  85         local_irq_save(flags);
  86         if (gpio_mode & GPIO_DFLT_LOW)
  87                 GPCR(gpio) = GPIO_bit(gpio);
  88         else if (gpio_mode & GPIO_DFLT_HIGH)
  89                 GPSR(gpio) = GPIO_bit(gpio);
  90         if (gpio_mode & GPIO_MD_MASK_DIR)
  91                 GPDR(gpio) |= GPIO_bit(gpio);
  92         else
  93                 GPDR(gpio) &= ~GPIO_bit(gpio);
  94         gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
  95         GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
  96         local_irq_restore(flags);
  97
  98         return 0;
  99 }
 100
 101 EXPORT_SYMBOL(pxa_gpio_mode);
 102
 103 /*
 104  * Return GPIO level
 105  */
 106 int pxa_gpio_get_value(unsigned gpio)
 107 {
 108         return __gpio_get_value(gpio);
 109 }
 110
 111 EXPORT_SYMBOL(pxa_gpio_get_value);
 112
 113 /*
 114  * Set output GPIO level
 115  */
 116 void pxa_gpio_set_value(unsigned gpio, int value)
 117 {
 118         __gpio_set_value(gpio, value);
 119 }
 120
 121 EXPORT_SYMBOL(pxa_gpio_set_value);
 122
 123 /*
 124  * Routine to safely enable or disable a clock in the CKEN
 125  */
 126 void pxa_set_cken(int clock, int enable)
 127 {
 128         unsigned long flags;
 129         local_irq_save(flags);
 130
 131         if (enable)
 132                 CKEN |= (1 << clock);
 133         else
 134                 CKEN &= ~(1 << clock);
 135
 136         local_irq_restore(flags);
 137 }
 138
 139 EXPORT_SYMBOL(pxa_set_cken);
 140
 141 /*
 142  * Intel PXA2xx internal register mapping.
 143  *
 144  * Note 1: not all PXA2xx variants implement all those addresses.
 145  *
 146  * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 147  *         and cache flush area.
 148  */
 149 static struct map_desc standard_io_desc[] __initdata = {
 150         {       /* Devs */
 151                 .virtual        =  0xf2000000,
 152                 .pfn            = __phys_to_pfn(0x40000000),
 153                 .length         = 0x02000000,
 154                 .type           = MT_DEVICE
 155         }, {    /* LCD */
 156                 .virtual        =  0xf4000000,
 157                 .pfn            = __phys_to_pfn(0x44000000),
 158                 .length         = 0x00100000,
 159                 .type           = MT_DEVICE
 160         }, {    /* Mem Ctl */
 161                 .virtual        =  0xf6000000,
 162                 .pfn            = __phys_to_pfn(0x48000000),
 163                 .length         = 0x00100000,
 164                 .type           = MT_DEVICE
 165         }, {    /* USB host */
 166                 .virtual        =  0xf8000000,
 167                 .pfn            = __phys_to_pfn(0x4c000000),
 168                 .length         = 0x00100000,
 169                 .type           = MT_DEVICE
 170         }, {    /* Camera */
 171                 .virtual        =  0xfa000000,
 172                 .pfn            = __phys_to_pfn(0x50000000),
 173                 .length         = 0x00100000,
 174                 .type           = MT_DEVICE
 175         }, {    /* IMem ctl */
 176                 .virtual        =  0xfe000000,
 177                 .pfn            = __phys_to_pfn(0x58000000),
 178                 .length         = 0x00100000,
 179                 .type           = MT_DEVICE
 180         }, {    /* UNCACHED_PHYS_0 */
 181                 .virtual        = 0xff000000,
 182                 .pfn            = __phys_to_pfn(0x00000000),
 183                 .length         = 0x00100000,
 184                 .type           = MT_DEVICE
 185         }
 186 };
 187
 188 void __init pxa_map_io(void)
 189 {
 190         iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
 191         get_clk_frequency_khz(1);
 192 }
 193
 194
 195 static struct resource pxamci_resources[] = {
 196         [0] = {
 197                 .start  = 0x41100000,
 198                 .end    = 0x41100fff,
 199                 .flags  = IORESOURCE_MEM,
 200         },
 201         [1] = {
 202                 .start  = IRQ_MMC,
 203                 .end    = IRQ_MMC,
 204                 .flags  = IORESOURCE_IRQ,
 205         },
 206 };
 207
 208 static u64 pxamci_dmamask = 0xffffffffUL;
 209
 210 struct platform_device pxa_device_mci = {
 211         .name           = "pxa2xx-mci",
 212         .id             = -1,
 213         .dev            = {
 214                 .dma_mask = &pxamci_dmamask,
 215                 .coherent_dma_mask = 0xffffffff,
 216         },
 217         .num_resources  = ARRAY_SIZE(pxamci_resources),
 218         .resource       = pxamci_resources,
 219 };
 220
 221 void __init pxa_set_mci_info(struct pxamci_platform_data *info)
 222 {
 223         pxa_device_mci.dev.platform_data = info;
 224 }
 225
 226
 227 static struct pxa2xx_udc_mach_info pxa_udc_info;
 228
 229 void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
 230 {
 231         memcpy(&pxa_udc_info, info, sizeof *info);
 232 }
 233
 234 static struct resource pxa2xx_udc_resources[] = {
 235         [0] = {
 236                 .start  = 0x40600000,
 237                 .end    = 0x4060ffff,
 238                 .flags  = IORESOURCE_MEM,
 239         },
 240         [1] = {
 241                 .start  = IRQ_USB,
 242                 .end    = IRQ_USB,
 243                 .flags  = IORESOURCE_IRQ,
 244         },
 245 };
 246
 247 static u64 udc_dma_mask = ~(u32)0;
 248
 249 struct platform_device pxa_device_udc = {
 250         .name           = "pxa2xx-udc",
 251         .id             = -1,
 252         .resource       = pxa2xx_udc_resources,
 253         .num_resources  = ARRAY_SIZE(pxa2xx_udc_resources),
 254         .dev            =  {
 255                 .platform_data  = &pxa_udc_info,
 256                 .dma_mask       = &udc_dma_mask,
 257         }
 258 };
 259
 260 static struct resource pxafb_resources[] = {
 261         [0] = {
 262                 .start  = 0x44000000,
 263                 .end    = 0x4400ffff,
 264                 .flags  = IORESOURCE_MEM,
 265         },
 266         [1] = {
 267                 .start  = IRQ_LCD,
 268                 .end    = IRQ_LCD,
 269                 .flags  = IORESOURCE_IRQ,
 270         },
 271 };
 272
 273 static u64 fb_dma_mask = ~(u64)0;
 274
 275 struct platform_device pxa_device_fb = {
 276         .name           = "pxa2xx-fb",
 277         .id             = -1,
 278         .dev            = {
 279                 .dma_mask       = &fb_dma_mask,
 280                 .coherent_dma_mask = 0xffffffff,
 281         },
 282         .num_resources  = ARRAY_SIZE(pxafb_resources),
 283         .resource       = pxafb_resources,
 284 };
 285
 286 void __init set_pxa_fb_info(struct pxafb_mach_info *info)
 287 {
 288         pxa_device_fb.dev.platform_data = info;
 289 }
 290
 291 void __init set_pxa_fb_parent(struct device *parent_dev)
 292 {
 293         pxa_device_fb.dev.parent = parent_dev;
 294 }
 295
 296 static struct resource pxa_resource_ffuart[] = {
 297         {
 298                 .start  = __PREG(FFUART),
 299                 .end    = __PREG(FFUART) + 35,
 300                 .flags  = IORESOURCE_MEM,
 301         }, {
 302                 .start  = IRQ_FFUART,
 303                 .end    = IRQ_FFUART,
 304                 .flags  = IORESOURCE_IRQ,
 305         }
 306 };
 307
 308 struct platform_device pxa_device_ffuart= {
 309         .name           = "pxa2xx-uart",
 310         .id             = 0,
 311         .resource       = pxa_resource_ffuart,
 312         .num_resources  = ARRAY_SIZE(pxa_resource_ffuart),
 313 };
 314
 315 static struct resource pxa_resource_btuart[] = {
 316         {
 317                 .start  = __PREG(BTUART),
 318                 .end    = __PREG(BTUART) + 35,
 319                 .flags  = IORESOURCE_MEM,
 320         }, {
 321                 .start  = IRQ_BTUART,
 322                 .end    = IRQ_BTUART,
 323                 .flags  = IORESOURCE_IRQ,
 324         }
 325 };
 326
 327 struct platform_device pxa_device_btuart = {
 328         .name           = "pxa2xx-uart",
 329         .id             = 1,
 330         .resource       = pxa_resource_btuart,
 331         .num_resources  = ARRAY_SIZE(pxa_resource_btuart),
 332 };
 333
 334 static struct resource pxa_resource_stuart[] = {
 335         {
 336                 .start  = __PREG(STUART),
 337                 .end    = __PREG(STUART) + 35,
 338                 .flags  = IORESOURCE_MEM,
 339         }, {
 340                 .start  = IRQ_STUART,
 341                 .end    = IRQ_STUART,
 342                 .flags  = IORESOURCE_IRQ,
 343         }
 344 };
 345
 346 struct platform_device pxa_device_stuart = {
 347         .name           = "pxa2xx-uart",
 348         .id             = 2,
 349         .resource       = pxa_resource_stuart,
 350         .num_resources  = ARRAY_SIZE(pxa_resource_stuart),
 351 };
 352
 353 static struct resource pxa_resource_hwuart[] = {
 354         {
 355                 .start  = __PREG(HWUART),
 356                 .end    = __PREG(HWUART) + 47,
 357                 .flags  = IORESOURCE_MEM,
 358         }, {
 359                 .start  = IRQ_HWUART,
 360                 .end    = IRQ_HWUART,
 361                 .flags  = IORESOURCE_IRQ,
 362         }
 363 };
 364
 365 struct platform_device pxa_device_hwuart = {
 366         .name           = "pxa2xx-uart",
 367         .id             = 3,
 368         .resource       = pxa_resource_hwuart,
 369         .num_resources  = ARRAY_SIZE(pxa_resource_hwuart),
 370 };
 371
 372 static struct resource pxai2c_resources[] = {
 373         {
 374                 .start  = 0x40301680,
 375                 .end    = 0x403016a3,
 376                 .flags  = IORESOURCE_MEM,
 377         }, {
 378                 .start  = IRQ_I2C,
 379                 .end    = IRQ_I2C,
 380                 .flags  = IORESOURCE_IRQ,
 381         },
 382 };
 383
 384 struct platform_device pxa_device_i2c = {
 385         .name           = "pxa2xx-i2c",
 386         .id             = 0,
 387         .resource       = pxai2c_resources,
 388         .num_resources  = ARRAY_SIZE(pxai2c_resources),
 389 };
 390
 391 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
 392 {
 393         pxa_device_i2c.dev.platform_data = info;
 394 }
 395
 396 static struct resource pxai2s_resources[] = {
 397         {
 398                 .start  = 0x40400000,
 399                 .end    = 0x40400083,
 400                 .flags  = IORESOURCE_MEM,
 401         }, {
 402                 .start  = IRQ_I2S,
 403                 .end    = IRQ_I2S,
 404                 .flags  = IORESOURCE_IRQ,
 405         },
 406 };
 407
 408 struct platform_device pxa_device_i2s = {
 409         .name           = "pxa2xx-i2s",
 410         .id             = -1,
 411         .resource       = pxai2s_resources,
 412         .num_resources  = ARRAY_SIZE(pxai2s_resources),
 413 };
 414
 415 static u64 pxaficp_dmamask = ~(u32)0;
 416
 417 struct platform_device pxa_device_ficp = {
 418         .name           = "pxa2xx-ir",
 419         .id             = -1,
 420         .dev            = {
 421                 .dma_mask = &pxaficp_dmamask,
 422                 .coherent_dma_mask = 0xffffffff,
 423         },
 424 };
 425
 426 void __init pxa_set_ficp_info(struct pxaficp_platform_data *info)
 427 {
 428         pxa_device_ficp.dev.platform_data = info;
 429 }
 430
 431 struct platform_device pxa_device_rtc = {
 432         .name           = "sa1100-rtc",
 433         .id             = -1,
 434 };