arch/arm/mach-pxa/lubbock.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/lubbock.c
   3  *
   4  *  Support for the Intel DBPXA250 Development Platform.
   5  *
   6  *  Author:     Nicolas Pitre
   7  *  Created:    Jun 15, 2001
   8  *  Copyright:  MontaVista Software Inc.
   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 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/major.h>
  20 #include <linux/fb.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24
  25 #include <asm/setup.h>
  26 #include <asm/memory.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware.h>
  29 #include <asm/irq.h>
  30 #include <asm/sizes.h>
  31
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/irq.h>
  35 #include <asm/mach/flash.h>
  36
  37 #include <asm/hardware/sa1111.h>
  38
  39 #include <asm/arch/pxa-regs.h>
  40 #include <asm/arch/lubbock.h>
  41 #include <asm/arch/udc.h>
  42 #include <asm/arch/irda.h>
  43 #include <asm/arch/pxafb.h>
  44 #include <asm/arch/mmc.h>
  45
  46 #include "generic.h"
  47
  48
  49 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
  50
  51 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
  52 {
  53         unsigned long flags;
  54
  55         local_irq_save(flags);
  56         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
  57         local_irq_restore(flags);
  58 }
  59 EXPORT_SYMBOL(lubbock_set_misc_wr);
  60
  61 static unsigned long lubbock_irq_enabled;
  62
  63 static void lubbock_mask_irq(unsigned int irq)
  64 {
  65         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  66         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
  67 }
  68
  69 static void lubbock_unmask_irq(unsigned int irq)
  70 {
  71         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
  72         /* the irq can be acknowledged only if deasserted, so it's done here */
  73         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
  74         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
  75 }
  76
  77 static struct irqchip lubbock_irq_chip = {
  78         .ack            = lubbock_mask_irq,
  79         .mask           = lubbock_mask_irq,
  80         .unmask         = lubbock_unmask_irq,
  81 };
  82
  83 static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
  84                                 struct pt_regs *regs)
  85 {
  86         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  87         do {
  88                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
  89                 if (likely(pending)) {
  90                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
  91                         desc = irq_desc + irq;
  92                         desc_handle_irq(irq, desc, regs);
  93                 }
  94                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
  95         } while (pending);
  96 }
  97
  98 static void __init lubbock_init_irq(void)
  99 {
 100         int irq;
 101
 102         pxa_init_irq();
 103
 104         /* setup extra lubbock irqs */
 105         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
 106                 set_irq_chip(irq, &lubbock_irq_chip);
 107                 set_irq_handler(irq, do_level_IRQ);
 108                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 109         }
 110
 111         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
 112         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 113 }
 114
 115 #ifdef CONFIG_PM
 116
 117 static int lubbock_irq_resume(struct sys_device *dev)
 118 {
 119         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
 120         return 0;
 121 }
 122
 123 static struct sysdev_class lubbock_irq_sysclass = {
 124         set_kset_name("cpld_irq"),
 125         .resume = lubbock_irq_resume,
 126 };
 127
 128 static struct sys_device lubbock_irq_device = {
 129         .cls = &lubbock_irq_sysclass,
 130 };
 131
 132 static int __init lubbock_irq_device_init(void)
 133 {
 134         int ret = sysdev_class_register(&lubbock_irq_sysclass);
 135         if (ret == 0)
 136                 ret = sysdev_register(&lubbock_irq_device);
 137         return ret;
 138 }
 139
 140 device_initcall(lubbock_irq_device_init);
 141
 142 #endif
 143
 144 static int lubbock_udc_is_connected(void)
 145 {
 146         return (LUB_MISC_RD & (1 << 9)) == 0;
 147 }
 148
 149 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 150         .udc_is_connected       = lubbock_udc_is_connected,
 151         // no D+ pullup; lubbock can't connect/disconnect in software
 152 };
 153
 154 static struct platform_device lub_audio_device = {
 155         .name           = "pxa2xx-ac97",
 156         .id             = -1,
 157 };
 158
 159 static struct resource sa1111_resources[] = {
 160         [0] = {
 161                 .start  = 0x10000000,
 162                 .end    = 0x10001fff,
 163                 .flags  = IORESOURCE_MEM,
 164         },
 165         [1] = {
 166                 .start  = LUBBOCK_SA1111_IRQ,
 167                 .end    = LUBBOCK_SA1111_IRQ,
 168                 .flags  = IORESOURCE_IRQ,
 169         },
 170 };
 171
 172 static struct platform_device sa1111_device = {
 173         .name           = "sa1111",
 174         .id             = -1,
 175         .num_resources  = ARRAY_SIZE(sa1111_resources),
 176         .resource       = sa1111_resources,
 177 };
 178
 179 static struct resource smc91x_resources[] = {
 180         [0] = {
 181                 .name   = "smc91x-regs",
 182                 .start  = 0x0c000c00,
 183                 .end    = 0x0c0fffff,
 184                 .flags  = IORESOURCE_MEM,
 185         },
 186         [1] = {
 187                 .start  = LUBBOCK_ETH_IRQ,
 188                 .end    = LUBBOCK_ETH_IRQ,
 189                 .flags  = IORESOURCE_IRQ,
 190         },
 191         [2] = {
 192                 .name   = "smc91x-attrib",
 193                 .start  = 0x0e000000,
 194                 .end    = 0x0e0fffff,
 195                 .flags  = IORESOURCE_MEM,
 196         },
 197 };
 198
 199 static struct platform_device smc91x_device = {
 200         .name           = "smc91x",
 201         .id             = -1,
 202         .num_resources  = ARRAY_SIZE(smc91x_resources),
 203         .resource       = smc91x_resources,
 204 };
 205
 206 static struct resource flash_resources[] = {
 207         [0] = {
 208                 .start  = 0x00000000,
 209                 .end    = SZ_64M - 1,
 210                 .flags  = IORESOURCE_MEM,
 211         },
 212         [1] = {
 213                 .start  = 0x04000000,
 214                 .end    = 0x04000000 + SZ_64M - 1,
 215                 .flags  = IORESOURCE_MEM,
 216         },
 217 };
 218
 219 static struct mtd_partition lubbock_partitions[] = {
 220         {
 221                 .name =         "Bootloader",
 222                 .size =         0x00040000,
 223                 .offset =       0,
 224                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 225         },{
 226                 .name =         "Kernel",
 227                 .size =         0x00100000,
 228                 .offset =       0x00040000,
 229         },{
 230                 .name =         "Filesystem",
 231                 .size =         MTDPART_SIZ_FULL,
 232                 .offset =       0x00140000
 233         }
 234 };
 235
 236 static struct flash_platform_data lubbock_flash_data[2] = {
 237         {
 238                 .map_name       = "cfi_probe",
 239                 .parts          = lubbock_partitions,
 240                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
 241         }, {
 242                 .map_name       = "cfi_probe",
 243                 .parts          = NULL,
 244                 .nr_parts       = 0,
 245         }
 246 };
 247
 248 static struct platform_device lubbock_flash_device[2] = {
 249         {
 250                 .name           = "pxa2xx-flash",
 251                 .id             = 0,
 252                 .dev = {
 253                         .platform_data = &lubbock_flash_data[0],
 254                 },
 255                 .resource = &flash_resources[0],
 256                 .num_resources = 1,
 257         },
 258         {
 259                 .name           = "pxa2xx-flash",
 260                 .id             = 1,
 261                 .dev = {
 262                         .platform_data = &lubbock_flash_data[1],
 263                 },
 264                 .resource = &flash_resources[1],
 265                 .num_resources = 1,
 266         },
 267 };
 268
 269 static struct platform_device *devices[] __initdata = {
 270         &sa1111_device,
 271         &lub_audio_device,
 272         &smc91x_device,
 273         &lubbock_flash_device[0],
 274         &lubbock_flash_device[1],
 275 };
 276
 277 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
 278         .pixclock       = 270000,
 279         .xres           = 640,
 280         .yres           = 480,
 281         .bpp            = 16,
 282         .hsync_len      = 1,
 283         .left_margin    = 3,
 284         .right_margin   = 3,
 285         .vsync_len      = 1,
 286         .upper_margin   = 0,
 287         .lower_margin   = 0,
 288         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 289         .cmap_greyscale = 0,
 290         .cmap_inverse   = 0,
 291         .cmap_static    = 0,
 292         .lccr0          = LCCR0_SDS,
 293         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
 294 };
 295
 296 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 297
 298 static void lubbock_mmc_poll(unsigned long);
 299 static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
 300
 301 static struct timer_list mmc_timer = {
 302         .function       = lubbock_mmc_poll,
 303 };
 304
 305 static void lubbock_mmc_poll(unsigned long data)
 306 {
 307         unsigned long flags;
 308
 309         /* clear any previous irq state, then ... */
 310         local_irq_save(flags);
 311         LUB_IRQ_SET_CLR &= ~(1 << 0);
 312         local_irq_restore(flags);
 313
 314         /* poll until mmc/sd card is removed */
 315         if (LUB_IRQ_SET_CLR & (1 << 0))
 316                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 317         else {
 318                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
 319                 enable_irq(LUBBOCK_SD_IRQ);
 320         }
 321 }
 322
 323 static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
 324 {
 325         /* IRQ is level triggered; disable, and poll for removal */
 326         disable_irq(irq);
 327         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 328
 329         return mmc_detect_int(irq, data, regs);
 330 }
 331
 332 static int lubbock_mci_init(struct device *dev,
 333                 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
 334                 void *data)
 335 {
 336         /* setup GPIO for PXA25x MMC controller */
 337         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 338         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 339
 340         /* detect card insert/eject */
 341         mmc_detect_int = detect_int;
 342         init_timer(&mmc_timer);
 343         mmc_timer.data = (unsigned long) data;
 344         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
 345                         SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
 346 }
 347
 348 static int lubbock_mci_get_ro(struct device *dev)
 349 {
 350         return (LUB_MISC_RD & (1 << 2)) != 0;
 351 }
 352
 353 static void lubbock_mci_exit(struct device *dev, void *data)
 354 {
 355         free_irq(LUBBOCK_SD_IRQ, data);
 356         del_timer_sync(&mmc_timer);
 357 }
 358
 359 static struct pxamci_platform_data lubbock_mci_platform_data = {
 360         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 361         .detect_delay   = 1,
 362         .init           = lubbock_mci_init,
 363         .get_ro         = lubbock_mci_get_ro,
 364         .exit           = lubbock_mci_exit,
 365 };
 366
 367 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
 368 {
 369         unsigned long flags;
 370
 371         local_irq_save(flags);
 372         if (mode & IR_SIRMODE) {
 373                 LUB_MISC_WR &= ~(1 << 4);
 374         } else if (mode & IR_FIRMODE) {
 375                 LUB_MISC_WR |= 1 << 4;
 376         }
 377         local_irq_restore(flags);
 378 }
 379
 380 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
 381         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
 382         .transceiver_mode = lubbock_irda_transceiver_mode,
 383 };
 384
 385 static void __init lubbock_init(void)
 386 {
 387         int flashboot = (LUB_CONF_SWITCHES & 1);
 388
 389         pxa_set_udc_info(&udc_info);
 390         set_pxa_fb_info(&sharp_lm8v31);
 391         pxa_set_mci_info(&lubbock_mci_platform_data);
 392         pxa_set_ficp_info(&lubbock_ficp_platform_data);
 393
 394         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 395                 (BOOT_DEF & 1) ? 2 : 4;
 396         /* Compensate for the nROMBT switch which swaps the flash banks */
 397         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
 398                flashboot?"Flash":"ROM", flashboot);
 399
 400         lubbock_flash_data[flashboot^1].name = "application-flash";
 401         lubbock_flash_data[flashboot].name = "boot-rom";
 402         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
 403 }
 404
 405 static struct map_desc lubbock_io_desc[] __initdata = {
 406         {       /* CPLD */
 407                 .virtual        =  LUBBOCK_FPGA_VIRT,
 408                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
 409                 .length         = 0x00100000,
 410                 .type           = MT_DEVICE
 411         }
 412 };
 413
 414 static void __init lubbock_map_io(void)
 415 {
 416         pxa_map_io();
 417         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
 418
 419         /* This enables the BTUART */
 420         pxa_gpio_mode(GPIO42_BTRXD_MD);
 421         pxa_gpio_mode(GPIO43_BTTXD_MD);
 422         pxa_gpio_mode(GPIO44_BTCTS_MD);
 423         pxa_gpio_mode(GPIO45_BTRTS_MD);
 424
 425         /* This is for the SMC chip select */
 426         pxa_gpio_mode(GPIO79_nCS_3_MD);
 427
 428         /* setup sleep mode values */
 429         PWER  = 0x00000002;
 430         PFER  = 0x00000000;
 431         PRER  = 0x00000002;
 432         PGSR0 = 0x00008000;
 433         PGSR1 = 0x003F0202;
 434         PGSR2 = 0x0001C000;
 435         PCFR |= PCFR_OPDE;
 436 }
 437
 438 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
 439         /* Maintainer: MontaVista Software Inc. */
 440         .phys_io        = 0x40000000,
 441         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 442         .map_io         = lubbock_map_io,
 443         .init_irq       = lubbock_init_irq,
 444         .timer          = &pxa_timer,
 445         .init_machine   = lubbock_init,
 446 MACHINE_END