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 #include <linux/gpio.h>
  16 #include <linux/gpio/machine.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/syscore_ops.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/sched.h>
  22 #include <linux/bitops.h>
  23 #include <linux/fb.h>
  24 #include <linux/ioport.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/input.h>
  28 #include <linux/gpio_keys.h>
  29 #include <linux/pwm_backlight.h>
  30 #include <linux/smc91x.h>
  31 #include <linux/i2c/pxa-i2c.h>
  32 #include <linux/slab.h>
  33 #include <linux/leds.h>
  34
  35 #include <asm/types.h>
  36 #include <asm/setup.h>
  37 #include <asm/memory.h>
  38 #include <asm/mach-types.h>
  39 #include <mach/hardware.h>
  40 #include <asm/irq.h>
  41 #include <asm/sizes.h>
  42
  43 #include <asm/mach/arch.h>
  44 #include <asm/mach/map.h>
  45 #include <asm/mach/irq.h>
  46 #include <asm/mach/flash.h>
  47
  48 #include <mach/pxa27x.h>
  49 #include <mach/mainstone.h>
  50 #include <mach/audio.h>
  51 #include <linux/platform_data/video-pxafb.h>
  52 #include <linux/platform_data/mmc-pxamci.h>
  53 #include <linux/platform_data/irda-pxaficp.h>
  54 #include <linux/platform_data/usb-ohci-pxa27x.h>
  55 #include <linux/platform_data/keypad-pxa27x.h>
  56 #include <mach/smemc.h>
  57
  58 #include "generic.h"
  59 #include "devices.h"
  60
  61 static unsigned long mainstone_pin_config[] = {
  62         /* Chip Select */
  63         GPIO15_nCS_1,
  64
  65         /* LCD - 16bpp Active TFT */
  66         GPIOxx_LCD_TFT_16BPP,
  67         GPIO16_PWM0_OUT,        /* Backlight */
  68
  69         /* MMC */
  70         GPIO32_MMC_CLK,
  71         GPIO112_MMC_CMD,
  72         GPIO92_MMC_DAT_0,
  73         GPIO109_MMC_DAT_1,
  74         GPIO110_MMC_DAT_2,
  75         GPIO111_MMC_DAT_3,
  76
  77         /* USB Host Port 1 */
  78         GPIO88_USBH1_PWR,
  79         GPIO89_USBH1_PEN,
  80
  81         /* PC Card */
  82         GPIO48_nPOE,
  83         GPIO49_nPWE,
  84         GPIO50_nPIOR,
  85         GPIO51_nPIOW,
  86         GPIO85_nPCE_1,
  87         GPIO54_nPCE_2,
  88         GPIO79_PSKTSEL,
  89         GPIO55_nPREG,
  90         GPIO56_nPWAIT,
  91         GPIO57_nIOIS16,
  92
  93         /* AC97 */
  94         GPIO28_AC97_BITCLK,
  95         GPIO29_AC97_SDATA_IN_0,
  96         GPIO30_AC97_SDATA_OUT,
  97         GPIO31_AC97_SYNC,
  98         GPIO45_AC97_SYSCLK,
  99
 100         /* Keypad */
 101         GPIO93_KP_DKIN_0,
 102         GPIO94_KP_DKIN_1,
 103         GPIO95_KP_DKIN_2,
 104         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
 105         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
 106         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
 107         GPIO97_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
 108         GPIO98_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
 109         GPIO99_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
 110         GPIO103_KP_MKOUT_0,
 111         GPIO104_KP_MKOUT_1,
 112         GPIO105_KP_MKOUT_2,
 113         GPIO106_KP_MKOUT_3,
 114         GPIO107_KP_MKOUT_4,
 115         GPIO108_KP_MKOUT_5,
 116         GPIO96_KP_MKOUT_6,
 117
 118         /* I2C */
 119         GPIO117_I2C_SCL,
 120         GPIO118_I2C_SDA,
 121
 122         /* GPIO */
 123         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
 124 };
 125
 126 static struct resource smc91x_resources[] = {
 127         [0] = {
 128                 .start  = (MST_ETH_PHYS + 0x300),
 129                 .end    = (MST_ETH_PHYS + 0xfffff),
 130                 .flags  = IORESOURCE_MEM,
 131         },
 132         [1] = {
 133                 .start  = MAINSTONE_IRQ(3),
 134                 .end    = MAINSTONE_IRQ(3),
 135                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 136         }
 137 };
 138
 139 static struct smc91x_platdata mainstone_smc91x_info = {
 140         .flags  = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
 141                   SMC91X_NOWAIT | SMC91X_USE_DMA,
 142 };
 143
 144 static struct platform_device smc91x_device = {
 145         .name           = "smc91x",
 146         .id             = 0,
 147         .num_resources  = ARRAY_SIZE(smc91x_resources),
 148         .resource       = smc91x_resources,
 149         .dev            = {
 150                 .platform_data = &mainstone_smc91x_info,
 151         },
 152 };
 153
 154 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
 155 {
 156         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 157                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
 158         return 0;
 159 }
 160
 161 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
 162 {
 163         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 164                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 165 }
 166
 167 static long mst_audio_suspend_mask;
 168
 169 static void mst_audio_suspend(void *priv)
 170 {
 171         mst_audio_suspend_mask = MST_MSCWR2;
 172         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 173 }
 174
 175 static void mst_audio_resume(void *priv)
 176 {
 177         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
 178 }
 179
 180 static pxa2xx_audio_ops_t mst_audio_ops = {
 181         .startup        = mst_audio_startup,
 182         .shutdown       = mst_audio_shutdown,
 183         .suspend        = mst_audio_suspend,
 184         .resume         = mst_audio_resume,
 185 };
 186
 187 static struct resource flash_resources[] = {
 188         [0] = {
 189                 .start  = PXA_CS0_PHYS,
 190                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
 191                 .flags  = IORESOURCE_MEM,
 192         },
 193         [1] = {
 194                 .start  = PXA_CS1_PHYS,
 195                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
 196                 .flags  = IORESOURCE_MEM,
 197         },
 198 };
 199
 200 static struct mtd_partition mainstoneflash0_partitions[] = {
 201         {
 202                 .name =         "Bootloader",
 203                 .size =         0x00040000,
 204                 .offset =       0,
 205                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
 206         },{
 207                 .name =         "Kernel",
 208                 .size =         0x00400000,
 209                 .offset =       0x00040000,
 210         },{
 211                 .name =         "Filesystem",
 212                 .size =         MTDPART_SIZ_FULL,
 213                 .offset =       0x00440000
 214         }
 215 };
 216
 217 static struct flash_platform_data mst_flash_data[2] = {
 218         {
 219                 .map_name       = "cfi_probe",
 220                 .parts          = mainstoneflash0_partitions,
 221                 .nr_parts       = ARRAY_SIZE(mainstoneflash0_partitions),
 222         }, {
 223                 .map_name       = "cfi_probe",
 224                 .parts          = NULL,
 225                 .nr_parts       = 0,
 226         }
 227 };
 228
 229 static struct platform_device mst_flash_device[2] = {
 230         {
 231                 .name           = "pxa2xx-flash",
 232                 .id             = 0,
 233                 .dev = {
 234                         .platform_data = &mst_flash_data[0],
 235                 },
 236                 .resource = &flash_resources[0],
 237                 .num_resources = 1,
 238         },
 239         {
 240                 .name           = "pxa2xx-flash",
 241                 .id             = 1,
 242                 .dev = {
 243                         .platform_data = &mst_flash_data[1],
 244                 },
 245                 .resource = &flash_resources[1],
 246                 .num_resources = 1,
 247         },
 248 };
 249
 250 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 251 static struct platform_pwm_backlight_data mainstone_backlight_data = {
 252         .pwm_id         = 0,
 253         .max_brightness = 1023,
 254         .dft_brightness = 1023,
 255         .pwm_period_ns  = 78770,
 256         .enable_gpio    = -1,
 257 };
 258
 259 static struct platform_device mainstone_backlight_device = {
 260         .name           = "pwm-backlight",
 261         .dev            = {
 262                 .parent = &pxa27x_device_pwm0.dev,
 263                 .platform_data = &mainstone_backlight_data,
 264         },
 265 };
 266
 267 static void __init mainstone_backlight_register(void)
 268 {
 269         int ret = platform_device_register(&mainstone_backlight_device);
 270         if (ret)
 271                 printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
 272 }
 273 #else
 274 #define mainstone_backlight_register()  do { } while (0)
 275 #endif
 276
 277 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
 278         .pixclock               = 50000,
 279         .xres                   = 640,
 280         .yres                   = 480,
 281         .bpp                    = 16,
 282         .hsync_len              = 1,
 283         .left_margin            = 0x9f,
 284         .right_margin           = 1,
 285         .vsync_len              = 44,
 286         .upper_margin           = 0,
 287         .lower_margin           = 0,
 288         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 289 };
 290
 291 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
 292         .pixclock               = 110000,
 293         .xres                   = 240,
 294         .yres                   = 320,
 295         .bpp                    = 16,
 296         .hsync_len              = 4,
 297         .left_margin            = 8,
 298         .right_margin           = 20,
 299         .vsync_len              = 3,
 300         .upper_margin           = 1,
 301         .lower_margin           = 10,
 302         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 303 };
 304
 305 static struct pxafb_mach_info mainstone_pxafb_info = {
 306         .num_modes              = 1,
 307         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 308 };
 309
 310 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
 311 {
 312         int err;
 313
 314         /* make sure SD/Memory Stick multiplexer's signals
 315          * are routed to MMC controller
 316          */
 317         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 318
 319         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, 0,
 320                              "MMC card detect", data);
 321         if (err)
 322                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 323
 324         return err;
 325 }
 326
 327 static int mainstone_mci_setpower(struct device *dev, unsigned int vdd)
 328 {
 329         struct pxamci_platform_data* p_d = dev->platform_data;
 330
 331         if (( 1 << vdd) & p_d->ocr_mask) {
 332                 printk(KERN_DEBUG "%s: on\n", __func__);
 333                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
 334                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 335         } else {
 336                 printk(KERN_DEBUG "%s: off\n", __func__);
 337                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
 338         }
 339         return 0;
 340 }
 341
 342 static void mainstone_mci_exit(struct device *dev, void *data)
 343 {
 344         free_irq(MAINSTONE_MMC_IRQ, data);
 345 }
 346
 347 static struct pxamci_platform_data mainstone_mci_platform_data = {
 348         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 349         .init                   = mainstone_mci_init,
 350         .setpower               = mainstone_mci_setpower,
 351         .exit                   = mainstone_mci_exit,
 352         .gpio_card_detect       = -1,
 353         .gpio_card_ro           = -1,
 354         .gpio_power             = -1,
 355 };
 356
 357 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
 358 {
 359         unsigned long flags;
 360
 361         local_irq_save(flags);
 362         if (mode & IR_SIRMODE) {
 363                 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
 364         } else if (mode & IR_FIRMODE) {
 365                 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
 366         }
 367         pxa2xx_transceiver_mode(dev, mode);
 368         if (mode & IR_OFF) {
 369                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
 370         } else {
 371                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
 372         }
 373         local_irq_restore(flags);
 374 }
 375
 376 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
 377         .gpio_pwdown            = -1,
 378         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 379         .transceiver_mode       = mainstone_irda_transceiver_mode,
 380 };
 381
 382 static struct gpio_keys_button gpio_keys_button[] = {
 383         [0] = {
 384                 .desc   = "wakeup",
 385                 .code   = KEY_SUSPEND,
 386                 .type   = EV_KEY,
 387                 .gpio   = 1,
 388                 .wakeup = 1,
 389         },
 390 };
 391
 392 static struct gpio_keys_platform_data mainstone_gpio_keys = {
 393         .buttons        = gpio_keys_button,
 394         .nbuttons       = 1,
 395 };
 396
 397 static struct platform_device mst_gpio_keys_device = {
 398         .name           = "gpio-keys",
 399         .id             = -1,
 400         .dev            = {
 401                 .platform_data  = &mainstone_gpio_keys,
 402         },
 403 };
 404
 405 static struct resource mst_cplds_resources[] = {
 406         [0] = {
 407                 .start  = MST_FPGA_PHYS + 0xc0,
 408                 .end    = MST_FPGA_PHYS + 0xe0 - 1,
 409                 .flags  = IORESOURCE_MEM,
 410         },
 411         [1] = {
 412                 .start  = PXA_GPIO_TO_IRQ(0),
 413                 .end    = PXA_GPIO_TO_IRQ(0),
 414                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 415         },
 416         [2] = {
 417                 .start  = MAINSTONE_IRQ(0),
 418                 .end    = MAINSTONE_IRQ(15),
 419                 .flags  = IORESOURCE_IRQ,
 420         },
 421 };
 422
 423 static struct platform_device mst_cplds_device = {
 424         .name           = "pxa_cplds_irqs",
 425         .id             = -1,
 426         .resource       = &mst_cplds_resources[0],
 427         .num_resources  = 3,
 428 };
 429
 430 static struct platform_device *platform_devices[] __initdata = {
 431         &smc91x_device,
 432         &mst_flash_device[0],
 433         &mst_flash_device[1],
 434         &mst_gpio_keys_device,
 435         &mst_cplds_device,
 436 };
 437
 438 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
 439         .port_mode      = PMM_PERPORT_MODE,
 440         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
 441 };
 442
 443 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
 444 static const unsigned int mainstone_matrix_keys[] = {
 445         KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
 446         KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
 447         KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
 448         KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
 449         KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
 450         KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
 451         KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
 452         KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
 453         KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),
 454
 455         KEY(0, 4, KEY_DOT),     /* . */
 456         KEY(1, 4, KEY_CLOSE),   /* @ */
 457         KEY(4, 4, KEY_SLASH),
 458         KEY(5, 4, KEY_BACKSLASH),
 459         KEY(0, 5, KEY_HOME),
 460         KEY(1, 5, KEY_LEFTSHIFT),
 461         KEY(2, 5, KEY_SPACE),
 462         KEY(3, 5, KEY_SPACE),
 463         KEY(4, 5, KEY_ENTER),
 464         KEY(5, 5, KEY_BACKSPACE),
 465
 466         KEY(0, 6, KEY_UP),
 467         KEY(1, 6, KEY_DOWN),
 468         KEY(2, 6, KEY_LEFT),
 469         KEY(3, 6, KEY_RIGHT),
 470         KEY(4, 6, KEY_SELECT),
 471 };
 472
 473 static struct matrix_keymap_data mainstone_matrix_keymap_data = {
 474         .keymap                 = mainstone_matrix_keys,
 475         .keymap_size            = ARRAY_SIZE(mainstone_matrix_keys),
 476 };
 477
 478 struct pxa27x_keypad_platform_data mainstone_keypad_info = {
 479         .matrix_key_rows        = 6,
 480         .matrix_key_cols        = 7,
 481         .matrix_keymap_data     = &mainstone_matrix_keymap_data,
 482
 483         .enable_rotary0         = 1,
 484         .rotary0_up_key         = KEY_UP,
 485         .rotary0_down_key       = KEY_DOWN,
 486
 487         .debounce_interval      = 30,
 488 };
 489
 490 static void __init mainstone_init_keypad(void)
 491 {
 492         pxa_set_keypad_info(&mainstone_keypad_info);
 493 }
 494 #else
 495 static inline void mainstone_init_keypad(void) {}
 496 #endif
 497
 498 static void __init mainstone_init(void)
 499 {
 500         int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
 501
 502         pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));
 503
 504         pxa_set_ffuart_info(NULL);
 505         pxa_set_btuart_info(NULL);
 506         pxa_set_stuart_info(NULL);
 507
 508         mst_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
 509         mst_flash_data[1].width = 4;
 510
 511         /* Compensate for SW7 which swaps the flash banks */
 512         mst_flash_data[SW7].name = "processor-flash";
 513         mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
 514
 515         printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
 516                mst_flash_data[0].name);
 517
 518         /* system bus arbiter setting
 519          * - Core_Park
 520          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
 521          */
 522         ARB_CNTRL = ARB_CORE_PARK | 0x234;
 523
 524         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 525
 526         /* reading Mainstone's "Virtual Configuration Register"
 527            might be handy to select LCD type here */
 528         if (0)
 529                 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
 530         else
 531                 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
 532
 533         pxa_set_fb_info(NULL, &mainstone_pxafb_info);
 534         mainstone_backlight_register();
 535
 536         pxa_set_mci_info(&mainstone_mci_platform_data);
 537         pxa_set_ficp_info(&mainstone_ficp_platform_data);
 538         pxa_set_ohci_info(&mainstone_ohci_platform_data);
 539         pxa_set_i2c_info(NULL);
 540         pxa_set_ac97_info(&mst_audio_ops);
 541
 542         mainstone_init_keypad();
 543 }
 544
 545
 546 static struct map_desc mainstone_io_desc[] __initdata = {
 547         {       /* CPLD */
 548                 .virtual        =  MST_FPGA_VIRT,
 549                 .pfn            = __phys_to_pfn(MST_FPGA_PHYS),
 550                 .length         = 0x00100000,
 551                 .type           = MT_DEVICE
 552         }
 553 };
 554
 555 static void __init mainstone_map_io(void)
 556 {
 557         pxa27x_map_io();
 558         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
 559
 560         /*      for use I SRAM as framebuffer.  */
 561         PSLR |= 0xF04;
 562         PCFR = 0x66;
 563 }
 564
 565 /*
 566  * Driver for the 8 discrete LEDs available for general use:
 567  * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
 568  * so be sure to not monkey with them here.
 569  */
 570
 571 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 572 struct mainstone_led {
 573         struct led_classdev     cdev;
 574         u8                      mask;
 575 };
 576
 577 /*
 578  * The triggers lines up below will only be used if the
 579  * LED triggers are compiled in.
 580  */
 581 static const struct {
 582         const char *name;
 583         const char *trigger;
 584 } mainstone_leds[] = {
 585         { "mainstone:D28", "default-on", },
 586         { "mainstone:D27", "cpu0", },
 587         { "mainstone:D26", "heartbeat" },
 588         { "mainstone:D25", },
 589         { "mainstone:D24", },
 590         { "mainstone:D23", },
 591         { "mainstone:D22", },
 592         { "mainstone:D21", },
 593 };
 594
 595 static void mainstone_led_set(struct led_classdev *cdev,
 596                               enum led_brightness b)
 597 {
 598         struct mainstone_led *led = container_of(cdev,
 599                                          struct mainstone_led, cdev);
 600         u32 reg = MST_LEDCTRL;
 601
 602         if (b != LED_OFF)
 603                 reg |= led->mask;
 604         else
 605                 reg &= ~led->mask;
 606
 607         MST_LEDCTRL = reg;
 608 }
 609
 610 static enum led_brightness mainstone_led_get(struct led_classdev *cdev)
 611 {
 612         struct mainstone_led *led = container_of(cdev,
 613                                          struct mainstone_led, cdev);
 614         u32 reg = MST_LEDCTRL;
 615
 616         return (reg & led->mask) ? LED_FULL : LED_OFF;
 617 }
 618
 619 static int __init mainstone_leds_init(void)
 620 {
 621         int i;
 622
 623         if (!machine_is_mainstone())
 624                 return -ENODEV;
 625
 626         /* All ON */
 627         MST_LEDCTRL |= 0xff;
 628         for (i = 0; i < ARRAY_SIZE(mainstone_leds); i++) {
 629                 struct mainstone_led *led;
 630
 631                 led = kzalloc(sizeof(*led), GFP_KERNEL);
 632                 if (!led)
 633                         break;
 634
 635                 led->cdev.name = mainstone_leds[i].name;
 636                 led->cdev.brightness_set = mainstone_led_set;
 637                 led->cdev.brightness_get = mainstone_led_get;
 638                 led->cdev.default_trigger = mainstone_leds[i].trigger;
 639                 led->mask = BIT(i);
 640
 641                 if (led_classdev_register(NULL, &led->cdev) < 0) {
 642                         kfree(led);
 643                         break;
 644                 }
 645         }
 646
 647         return 0;
 648 }
 649
 650 /*
 651  * Since we may have triggers on any subsystem, defer registration
 652  * until after subsystem_init.
 653  */
 654 fs_initcall(mainstone_leds_init);
 655 #endif
 656
 657 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
 658         /* Maintainer: MontaVista Software Inc. */
 659         .atag_offset    = 0x100,        /* BLOB boot parameter setting */
 660         .map_io         = mainstone_map_io,
 661         .nr_irqs        = MAINSTONE_NR_IRQS,
 662         .init_irq       = pxa27x_init_irq,
 663         .handle_irq     = pxa27x_handle_irq,
 664         .init_time      = pxa_timer_init,
 665         .init_machine   = mainstone_init,
 666         .restart        = pxa_restart,
 667 MACHINE_END