arch/arm/mach-pxa/mainstone.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/mainstone.c
   3  *
   4  *  Support for the Intel HCDDBBVA0 Development Platform.
   5  *  (go figure how they came up with such name...)
   6  *
   7  *  Author:     Nicolas Pitre
   8  *  Created:    Nov 05, 2002
   9  *  Copyright:  MontaVista Software Inc.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License version 2 as
  13  *  published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/bitops.h>
  22 #include <linux/fb.h>
  23 #include <linux/ioport.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/partitions.h>
  26
  27 #include <asm/types.h>
  28 #include <asm/setup.h>
  29 #include <asm/memory.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/hardware.h>
  32 #include <asm/irq.h>
  33 #include <asm/sizes.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/irq.h>
  38 #include <asm/mach/flash.h>
  39
  40 #include <asm/arch/pxa-regs.h>
  41 #include <asm/arch/mainstone.h>
  42 #include <asm/arch/audio.h>
  43 #include <asm/arch/pxafb.h>
  44 #include <asm/arch/mmc.h>
  45 #include <asm/arch/irda.h>
  46 #include <asm/arch/ohci.h>
  47
  48 #include "generic.h"
  49
  50
  51 static unsigned long mainstone_irq_enabled;
  52
  53 static void mainstone_mask_irq(unsigned int irq)
  54 {
  55         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  56         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
  57 }
  58
  59 static void mainstone_unmask_irq(unsigned int irq)
  60 {
  61         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  62         /* the irq can be acknowledged only if deasserted, so it's done here */
  63         MST_INTSETCLR &= ~(1 << mainstone_irq);
  64         MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
  65 }
  66
  67 static struct irq_chip mainstone_irq_chip = {
  68         .name           = "FPGA",
  69         .ack            = mainstone_mask_irq,
  70         .mask           = mainstone_mask_irq,
  71         .unmask         = mainstone_unmask_irq,
  72 };
  73
  74 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
  75                                   struct pt_regs *regs)
  76 {
  77         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
  78         do {
  79                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  80                 if (likely(pending)) {
  81                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
  82                         desc = irq_desc + irq;
  83                         desc_handle_irq(irq, desc, regs);
  84                 }
  85                 pending = MST_INTSETCLR & mainstone_irq_enabled;
  86         } while (pending);
  87 }
  88
  89 static void __init mainstone_init_irq(void)
  90 {
  91         int irq;
  92
  93         pxa_init_irq();
  94
  95         /* setup extra Mainstone irqs */
  96         for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
  97                 set_irq_chip(irq, &mainstone_irq_chip);
  98                 set_irq_handler(irq, do_level_IRQ);
  99                 if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
 100                         set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
 101                 else
 102                         set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
 103         }
 104         set_irq_flags(MAINSTONE_IRQ(8), 0);
 105         set_irq_flags(MAINSTONE_IRQ(12), 0);
 106
 107         MST_INTMSKENA = 0;
 108         MST_INTSETCLR = 0;
 109
 110         set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
 111         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 112 }
 113
 114 #ifdef CONFIG_PM
 115
 116 static int mainstone_irq_resume(struct sys_device *dev)
 117 {
 118         MST_INTMSKENA = mainstone_irq_enabled;
 119         return 0;
 120 }
 121
 122 static struct sysdev_class mainstone_irq_sysclass = {
 123         set_kset_name("cpld_irq"),
 124         .resume = mainstone_irq_resume,
 125 };
 126
 127 static struct sys_device mainstone_irq_device = {
 128         .cls = &mainstone_irq_sysclass,
 129 };
 130
 131 static int __init mainstone_irq_device_init(void)
 132 {
 133         int ret = sysdev_class_register(&mainstone_irq_sysclass);
 134         if (ret == 0)
 135                 ret = sysdev_register(&mainstone_irq_device);
 136         return ret;
 137 }
 138
 139 device_initcall(mainstone_irq_device_init);
 140
 141 #endif
 142
 143
 144 static struct resource smc91x_resources[] = {
 145         [0] = {
 146                 .start  = (MST_ETH_PHYS + 0x300),
 147                 .end    = (MST_ETH_PHYS + 0xfffff),
 148                 .flags  = IORESOURCE_MEM,
 149         },
 150         [1] = {
 151                 .start  = MAINSTONE_IRQ(3),
 152                 .end    = MAINSTONE_IRQ(3),
 153                 .flags  = IORESOURCE_IRQ,
 154         }
 155 };
 156
 157 static struct platform_device smc91x_device = {
 158         .name           = "smc91x",
 159         .id             = 0,
 160         .num_resources  = ARRAY_SIZE(smc91x_resources),
 161         .resource       = smc91x_resources,
 162 };
 163
 164 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
 165 {
 166         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 167                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
 168         return 0;
 169 }
 170
 171 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
 172 {
 173         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 174                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 175 }
 176
 177 static long mst_audio_suspend_mask;
 178
 179 static void mst_audio_suspend(void *priv)
 180 {
 181         mst_audio_suspend_mask = MST_MSCWR2;
 182         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 183 }
 184
 185 static void mst_audio_resume(void *priv)
 186 {
 187         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
 188 }
 189
 190 static pxa2xx_audio_ops_t mst_audio_ops = {
 191         .startup        = mst_audio_startup,
 192         .shutdown       = mst_audio_shutdown,
 193         .suspend        = mst_audio_suspend,
 194         .resume         = mst_audio_resume,
 195 };
 196
 197 static struct platform_device mst_audio_device = {
 198         .name           = "pxa2xx-ac97",
 199         .id             = -1,
 200         .dev            = { .platform_data = &mst_audio_ops },
 201 };
 202
 203 static struct resource flash_resources[] = {
 204         [0] = {
 205                 .start  = PXA_CS0_PHYS,
 206                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 207                 .flags  = IORESOURCE_MEM,
 208         },
 209         [1] = {
 210                 .start  = PXA_CS1_PHYS,
 211                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 212                 .flags  = IORESOURCE_MEM,
 213         },
 214 };
 215
 216 static struct mtd_partition mainstoneflash0_partitions[] = {
 217         {
 218                 .name =         "Bootloader",
 219                 .size =         0x00040000,
 220                 .offset =       0,
 221                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 222         },{
 223                 .name =         "Kernel",
 224                 .size =         0x00400000,
 225                 .offset =       0x00040000,
 226         },{
 227                 .name =         "Filesystem",
 228                 .size =         MTDPART_SIZ_FULL,
 229                 .offset =       0x00440000
 230         }
 231 };
 232
 233 static struct flash_platform_data mst_flash_data[2] = {
 234         {
 235                 .map_name       = "cfi_probe",
 236                 .parts          = mainstoneflash0_partitions,
 237                 .nr_parts       = ARRAY_SIZE(mainstoneflash0_partitions),
 238         }, {
 239                 .map_name       = "cfi_probe",
 240                 .parts          = NULL,
 241                 .nr_parts       = 0,
 242         }
 243 };
 244
 245 static struct platform_device mst_flash_device[2] = {
 246         {
 247                 .name           = "pxa2xx-flash",
 248                 .id             = 0,
 249                 .dev = {
 250                         .platform_data = &mst_flash_data[0],
 251                 },
 252                 .resource = &flash_resources[0],
 253                 .num_resources = 1,
 254         },
 255         {
 256                 .name           = "pxa2xx-flash",
 257                 .id             = 1,
 258                 .dev = {
 259                         .platform_data = &mst_flash_data[1],
 260                 },
 261                 .resource = &flash_resources[1],
 262                 .num_resources = 1,
 263         },
 264 };
 265
 266 static void mainstone_backlight_power(int on)
 267 {
 268         if (on) {
 269                 pxa_gpio_mode(GPIO16_PWM0_MD);
 270                 pxa_set_cken(CKEN0_PWM0, 1);
 271                 PWM_CTRL0 = 0;
 272                 PWM_PWDUTY0 = 0x3ff;
 273                 PWM_PERVAL0 = 0x3ff;
 274         } else {
 275                 PWM_CTRL0 = 0;
 276                 PWM_PWDUTY0 = 0x0;
 277                 PWM_PERVAL0 = 0x3FF;
 278                 pxa_set_cken(CKEN0_PWM0, 0);
 279         }
 280 }
 281
 282 static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
 283         .pixclock               = 50000,
 284         .xres                   = 640,
 285         .yres                   = 480,
 286         .bpp                    = 16,
 287         .hsync_len              = 1,
 288         .left_margin            = 0x9f,
 289         .right_margin           = 1,
 290         .vsync_len              = 44,
 291         .upper_margin           = 0,
 292         .lower_margin           = 0,
 293         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 294         .lccr0                  = LCCR0_Act,
 295         .lccr3                  = LCCR3_PCP,
 296         .pxafb_backlight_power  = mainstone_backlight_power,
 297 };
 298
 299 static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
 300         .pixclock               = 110000,
 301         .xres                   = 240,
 302         .yres                   = 320,
 303         .bpp                    = 16,
 304         .hsync_len              = 4,
 305         .left_margin            = 8,
 306         .right_margin           = 20,
 307         .vsync_len              = 3,
 308         .upper_margin           = 1,
 309         .lower_margin           = 10,
 310         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 311         .lccr0                  = LCCR0_Act,
 312         .lccr3                  = LCCR3_PCP,
 313         .pxafb_backlight_power  = mainstone_backlight_power,
 314 };
 315
 316 static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
 317 {
 318         int err;
 319
 320         /*
 321          * setup GPIO for PXA27x MMC controller
 322          */
 323         pxa_gpio_mode(GPIO32_MMCCLK_MD);
 324         pxa_gpio_mode(GPIO112_MMCCMD_MD);
 325         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
 326         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
 327         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
 328         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
 329
 330         /* make sure SD/Memory Stick multiplexer's signals
 331          * are routed to MMC controller
 332          */
 333         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 334
 335         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
 336                              "MMC card detect", data);
 337         if (err) {
 338                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 339                 return -1;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
 346 {
 347         struct pxamci_platform_data* p_d = dev->platform_data;
 348
 349         if (( 1 << vdd) & p_d->ocr_mask) {
 350                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
 351                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
 352                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 353         } else {
 354                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 355                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
 356         }
 357 }
 358
 359 static void mainstone_mci_exit(struct device *dev, void *data)
 360 {
 361         free_irq(MAINSTONE_MMC_IRQ, data);
 362 }
 363
 364 static struct pxamci_platform_data mainstone_mci_platform_data = {
 365         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 366         .init           = mainstone_mci_init,
 367         .setpower       = mainstone_mci_setpower,
 368         .exit           = mainstone_mci_exit,
 369 };
 370
 371 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
 372 {
 373         unsigned long flags;
 374
 375         local_irq_save(flags);
 376         if (mode & IR_SIRMODE) {
 377                 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
 378         } else if (mode & IR_FIRMODE) {
 379                 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
 380         }
 381         if (mode & IR_OFF) {
 382                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
 383         } else {
 384                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
 385         }
 386         local_irq_restore(flags);
 387 }
 388
 389 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
 390         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 391         .transceiver_mode = mainstone_irda_transceiver_mode,
 392 };
 393
 394 static struct platform_device *platform_devices[] __initdata = {
 395         &smc91x_device,
 396         &mst_audio_device,
 397         &mst_flash_device[0],
 398         &mst_flash_device[1],
 399 };
 400
 401 static int mainstone_ohci_init(struct device *dev)
 402 {
 403         /* setup Port1 GPIO pin. */
 404         pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN);  /* USBHPWR1 */
 405         pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
 406
 407         /* Set the Power Control Polarity Low and Power Sense
 408            Polarity Low to active low. */
 409         UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
 410                 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
 411
 412         return 0;
 413 }
 414
 415 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
 416         .port_mode      = PMM_PERPORT_MODE,
 417         .init           = mainstone_ohci_init,
 418 };
 419
 420 static void __init mainstone_init(void)
 421 {
 422         int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
 423
 424         mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
 425         mst_flash_data[1].width = 4;
 426
 427         /* Compensate for SW7 which swaps the flash banks */
 428         mst_flash_data[SW7].name = "processor-flash";
 429         mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
 430
 431         printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
 432                mst_flash_data[0].name);
 433
 434         /* system bus arbiter setting
 435          * - Core_Park
 436          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 437          */
 438         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 439
 440         /*
 441          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
 442          * the audio daughter card
 443          */
 444         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 445
 446         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 447
 448         /* reading Mainstone's "Virtual Configuration Register"
 449            might be handy to select LCD type here */
 450         if (0)
 451                 set_pxa_fb_info(&toshiba_ltm04c380k);
 452         else
 453                 set_pxa_fb_info(&toshiba_ltm035a776c);
 454
 455         pxa_set_mci_info(&mainstone_mci_platform_data);
 456         pxa_set_ficp_info(&mainstone_ficp_platform_data);
 457         pxa_set_ohci_info(&mainstone_ohci_platform_data);
 458 }
 459
 460
 461 static struct map_desc mainstone_io_desc[] __initdata = {
 462         {       /* CPLD */
 463                 .virtual        =  MST_FPGA_VIRT,
 464                 .pfn            = __phys_to_pfn(MST_FPGA_PHYS),
 465                 .length         = 0x00100000,
 466                 .type           = MT_DEVICE
 467         }
 468 };
 469
 470 static void __init mainstone_map_io(void)
 471 {
 472         pxa_map_io();
 473         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
 474
 475         /* initialize sleep mode regs (wake-up sources, etc) */
 476         PGSR0 = 0x00008800;
 477         PGSR1 = 0x00000002;
 478         PGSR2 = 0x0001FC00;
 479         PGSR3 = 0x00001F81;
 480         PWER  = 0xC0000002;
 481         PRER  = 0x00000002;
 482         PFER  = 0x00000002;
 483         /*      for use I SRAM as framebuffer.  */
 484         PSLR |= 0xF04;
 485         PCFR = 0x66;
 486         /*      For Keypad wakeup.      */
 487         KPC &=~KPC_ASACT;
 488         KPC |=KPC_AS;
 489         PKWR  = 0x000FD000;
 490         /*      Need read PKWR back after set it.       */
 491         PKWR;
 492 }
 493
 494 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
 495         /* Maintainer: MontaVista Software Inc. */
 496         .phys_io        = 0x40000000,
 497         .boot_params    = 0xa0000100,   /* BLOB boot parameter setting */
 498         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 499         .map_io         = mainstone_map_io,
 500         .init_irq       = mainstone_init_irq,
 501         .timer          = &pxa_timer,
 502         .init_machine   = mainstone_init,
 503 MACHINE_END