kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-pxa/em-x270.c

   1 /*
   2  * Support for CompuLab EM-X270 platform
   3  *
   4  * Copyright (C) 2007, 2008 CompuLab, Ltd.
   5  * Author: Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/irq.h>
  13 #include <linux/platform_device.h>
  14
  15 #include <linux/dm9000.h>
  16 #include <linux/rtc-v3020.h>
  17 #include <linux/mtd/nand.h>
  18 #include <linux/mtd/partitions.h>
  19 #include <linux/input.h>
  20 #include <linux/gpio_keys.h>
  21 #include <linux/gpio.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25
  26 #include <mach/mfp-pxa27x.h>
  27 #include <mach/pxa-regs.h>
  28 #include <mach/pxa27x-udc.h>
  29 #include <mach/audio.h>
  30 #include <mach/pxafb.h>
  31 #include <mach/ohci.h>
  32 #include <mach/mmc.h>
  33 #include <mach/pxa27x_keypad.h>
  34
  35 #include "generic.h"
  36
  37 /* GPIO IRQ usage */
  38 #define GPIO41_ETHIRQ           (41)
  39 #define GPIO13_MMC_CD           (13)
  40 #define EM_X270_ETHIRQ          IRQ_GPIO(GPIO41_ETHIRQ)
  41 #define EM_X270_MMC_CD          IRQ_GPIO(GPIO13_MMC_CD)
  42
  43 /* NAND control GPIOs */
  44 #define GPIO11_NAND_CS  (11)
  45 #define GPIO56_NAND_RB  (56)
  46
  47 static unsigned long em_x270_pin_config[] = {
  48         /* AC'97 */
  49         GPIO28_AC97_BITCLK,
  50         GPIO29_AC97_SDATA_IN_0,
  51         GPIO30_AC97_SDATA_OUT,
  52         GPIO31_AC97_SYNC,
  53         GPIO98_AC97_SYSCLK,
  54         GPIO113_AC97_nRESET,
  55
  56         /* BTUART */
  57         GPIO42_BTUART_RXD,
  58         GPIO43_BTUART_TXD,
  59         GPIO44_BTUART_CTS,
  60         GPIO45_BTUART_RTS,
  61
  62         /* STUART */
  63         GPIO46_STUART_RXD,
  64         GPIO47_STUART_TXD,
  65
  66         /* MCI controller */
  67         GPIO32_MMC_CLK,
  68         GPIO112_MMC_CMD,
  69         GPIO92_MMC_DAT_0,
  70         GPIO109_MMC_DAT_1,
  71         GPIO110_MMC_DAT_2,
  72         GPIO111_MMC_DAT_3,
  73
  74         /* LCD */
  75         GPIO58_LCD_LDD_0,
  76         GPIO59_LCD_LDD_1,
  77         GPIO60_LCD_LDD_2,
  78         GPIO61_LCD_LDD_3,
  79         GPIO62_LCD_LDD_4,
  80         GPIO63_LCD_LDD_5,
  81         GPIO64_LCD_LDD_6,
  82         GPIO65_LCD_LDD_7,
  83         GPIO66_LCD_LDD_8,
  84         GPIO67_LCD_LDD_9,
  85         GPIO68_LCD_LDD_10,
  86         GPIO69_LCD_LDD_11,
  87         GPIO70_LCD_LDD_12,
  88         GPIO71_LCD_LDD_13,
  89         GPIO72_LCD_LDD_14,
  90         GPIO73_LCD_LDD_15,
  91         GPIO74_LCD_FCLK,
  92         GPIO75_LCD_LCLK,
  93         GPIO76_LCD_PCLK,
  94         GPIO77_LCD_BIAS,
  95
  96         /* QCI */
  97         GPIO84_CIF_FV,
  98         GPIO25_CIF_LV,
  99         GPIO53_CIF_MCLK,
 100         GPIO54_CIF_PCLK,
 101         GPIO81_CIF_DD_0,
 102         GPIO55_CIF_DD_1,
 103         GPIO51_CIF_DD_2,
 104         GPIO50_CIF_DD_3,
 105         GPIO52_CIF_DD_4,
 106         GPIO48_CIF_DD_5,
 107         GPIO17_CIF_DD_6,
 108         GPIO12_CIF_DD_7,
 109
 110         /* I2C */
 111         GPIO117_I2C_SCL,
 112         GPIO118_I2C_SDA,
 113
 114         /* Keypad */
 115         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
 116         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
 117         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
 118         GPIO34_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
 119         GPIO39_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
 120         GPIO99_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
 121         GPIO91_KP_MKIN_6        | WAKEUP_ON_LEVEL_HIGH,
 122         GPIO36_KP_MKIN_7        | WAKEUP_ON_LEVEL_HIGH,
 123         GPIO103_KP_MKOUT_0,
 124         GPIO104_KP_MKOUT_1,
 125         GPIO105_KP_MKOUT_2,
 126         GPIO106_KP_MKOUT_3,
 127         GPIO107_KP_MKOUT_4,
 128         GPIO108_KP_MKOUT_5,
 129         GPIO96_KP_MKOUT_6,
 130         GPIO22_KP_MKOUT_7,
 131
 132         /* SSP1 */
 133         GPIO26_SSP1_RXD,
 134         GPIO23_SSP1_SCLK,
 135         GPIO24_SSP1_SFRM,
 136         GPIO57_SSP1_TXD,
 137
 138         /* SSP2 */
 139         GPIO19_SSP2_SCLK,
 140         GPIO14_SSP2_SFRM,
 141         GPIO89_SSP2_TXD,
 142         GPIO88_SSP2_RXD,
 143
 144         /* SDRAM and local bus */
 145         GPIO15_nCS_1,
 146         GPIO78_nCS_2,
 147         GPIO79_nCS_3,
 148         GPIO80_nCS_4,
 149         GPIO49_nPWE,
 150         GPIO18_RDY,
 151
 152         /* GPIO */
 153         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
 154
 155         /* power controls */
 156         GPIO20_GPIO     | MFP_LPM_DRIVE_LOW,    /* GPRS_PWEN */
 157         GPIO115_GPIO    | MFP_LPM_DRIVE_LOW,    /* WLAN_PWEN */
 158
 159         /* NAND controls */
 160         GPIO11_GPIO     | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 161         GPIO56_GPIO,                            /* NAND Ready/Busy */
 162
 163         /* interrupts */
 164         GPIO13_GPIO,    /* MMC card detect */
 165         GPIO41_GPIO,    /* DM9000 interrupt */
 166 };
 167
 168 #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
 169 static struct resource em_x270_dm9000_resource[] = {
 170         [0] = {
 171                 .start = PXA_CS2_PHYS,
 172                 .end   = PXA_CS2_PHYS + 3,
 173                 .flags = IORESOURCE_MEM,
 174         },
 175         [1] = {
 176                 .start = PXA_CS2_PHYS + 8,
 177                 .end   = PXA_CS2_PHYS + 8 + 0x3f,
 178                 .flags = IORESOURCE_MEM,
 179         },
 180         [2] = {
 181                 .start = EM_X270_ETHIRQ,
 182                 .end   = EM_X270_ETHIRQ,
 183                 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 184         }
 185 };
 186
 187 static struct dm9000_plat_data em_x270_dm9000_platdata = {
 188         .flags          = DM9000_PLATF_32BITONLY,
 189 };
 190
 191 static struct platform_device em_x270_dm9000 = {
 192         .name           = "dm9000",
 193         .id             = 0,
 194         .num_resources  = ARRAY_SIZE(em_x270_dm9000_resource),
 195         .resource       = em_x270_dm9000_resource,
 196         .dev            = {
 197                 .platform_data = &em_x270_dm9000_platdata,
 198         }
 199 };
 200
 201 static void __init em_x270_init_dm9000(void)
 202 {
 203         platform_device_register(&em_x270_dm9000);
 204 }
 205 #else
 206 static inline void em_x270_init_dm9000(void) {}
 207 #endif
 208
 209 /* V3020 RTC */
 210 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 211 static struct resource em_x270_v3020_resource[] = {
 212         [0] = {
 213                 .start = PXA_CS4_PHYS,
 214                 .end   = PXA_CS4_PHYS + 3,
 215                 .flags = IORESOURCE_MEM,
 216         },
 217 };
 218
 219 static struct v3020_platform_data em_x270_v3020_platdata = {
 220         .leftshift = 0,
 221 };
 222
 223 static struct platform_device em_x270_rtc = {
 224         .name           = "v3020",
 225         .num_resources  = ARRAY_SIZE(em_x270_v3020_resource),
 226         .resource       = em_x270_v3020_resource,
 227         .id             = -1,
 228         .dev            = {
 229                 .platform_data = &em_x270_v3020_platdata,
 230         }
 231 };
 232
 233 static void __init em_x270_init_rtc(void)
 234 {
 235         platform_device_register(&em_x270_rtc);
 236 }
 237 #else
 238 static inline void em_x270_init_rtc(void) {}
 239 #endif
 240
 241 /* NAND flash */
 242 #if defined(CONFIG_MTD_NAND_PLATFORM) || defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
 243 static inline void nand_cs_on(void)
 244 {
 245         gpio_set_value(GPIO11_NAND_CS, 0);
 246 }
 247
 248 static void nand_cs_off(void)
 249 {
 250         dsb();
 251
 252         gpio_set_value(GPIO11_NAND_CS, 1);
 253 }
 254
 255 /* hardware specific access to control-lines */
 256 static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
 257                                  unsigned int ctrl)
 258 {
 259         struct nand_chip *this = mtd->priv;
 260         unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
 261
 262         dsb();
 263
 264         if (ctrl & NAND_CTRL_CHANGE) {
 265                 if (ctrl & NAND_ALE)
 266                         nandaddr |=  (1 << 3);
 267                 else
 268                         nandaddr &= ~(1 << 3);
 269                 if (ctrl & NAND_CLE)
 270                         nandaddr |=  (1 << 2);
 271                 else
 272                         nandaddr &= ~(1 << 2);
 273                 if (ctrl & NAND_NCE)
 274                         nand_cs_on();
 275                 else
 276                         nand_cs_off();
 277         }
 278
 279         dsb();
 280         this->IO_ADDR_W = (void __iomem *)nandaddr;
 281         if (dat != NAND_CMD_NONE)
 282                 writel(dat, this->IO_ADDR_W);
 283
 284         dsb();
 285 }
 286
 287 /* read device ready pin */
 288 static int em_x270_nand_device_ready(struct mtd_info *mtd)
 289 {
 290         dsb();
 291
 292         return gpio_get_value(GPIO56_NAND_RB);
 293 }
 294
 295 static struct mtd_partition em_x270_partition_info[] = {
 296         [0] = {
 297                 .name   = "em_x270-0",
 298                 .offset = 0,
 299                 .size   = SZ_4M,
 300         },
 301         [1] = {
 302                 .name   = "em_x270-1",
 303                 .offset = MTDPART_OFS_APPEND,
 304                 .size   = MTDPART_SIZ_FULL
 305         },
 306 };
 307
 308 static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
 309
 310 struct platform_nand_data em_x270_nand_platdata = {
 311         .chip = {
 312                 .nr_chips = 1,
 313                 .chip_offset = 0,
 314                 .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
 315                 .partitions = em_x270_partition_info,
 316                 .chip_delay = 20,
 317                 .part_probe_types = em_x270_part_probes,
 318         },
 319         .ctrl = {
 320                 .hwcontrol = 0,
 321                 .dev_ready = em_x270_nand_device_ready,
 322                 .select_chip = 0,
 323                 .cmd_ctrl = em_x270_nand_cmd_ctl,
 324         },
 325 };
 326
 327 static struct resource em_x270_nand_resource[] = {
 328         [0] = {
 329                 .start = PXA_CS1_PHYS,
 330                 .end   = PXA_CS1_PHYS + 12,
 331                 .flags = IORESOURCE_MEM,
 332         },
 333 };
 334
 335 static struct platform_device em_x270_nand = {
 336         .name           = "gen_nand",
 337         .num_resources  = ARRAY_SIZE(em_x270_nand_resource),
 338         .resource       = em_x270_nand_resource,
 339         .id             = -1,
 340         .dev            = {
 341                 .platform_data = &em_x270_nand_platdata,
 342         }
 343 };
 344
 345 static void __init em_x270_init_nand(void)
 346 {
 347         int err;
 348
 349         err = gpio_request(GPIO11_NAND_CS, "NAND CS");
 350         if (err) {
 351                 pr_warning("EM-X270: failed to request NAND CS gpio\n");
 352                 return;
 353         }
 354
 355         gpio_direction_output(GPIO11_NAND_CS, 1);
 356
 357         err = gpio_request(GPIO56_NAND_RB, "NAND R/B");
 358         if (err) {
 359                 pr_warning("EM-X270: failed to request NAND R/B gpio\n");
 360                 gpio_free(GPIO11_NAND_CS);
 361                 return;
 362         }
 363
 364         gpio_direction_input(GPIO56_NAND_RB);
 365
 366         platform_device_register(&em_x270_nand);
 367 }
 368 #else
 369 static inline void em_x270_init_nand(void) {}
 370 #endif
 371
 372 /* PXA27x OHCI controller setup */
 373 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 374 static int em_x270_ohci_init(struct device *dev)
 375 {
 376         /* enable port 2 transiever */
 377         UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
 378
 379         return 0;
 380 }
 381
 382 static struct pxaohci_platform_data em_x270_ohci_platform_data = {
 383         .port_mode      = PMM_PERPORT_MODE,
 384         .flags          = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
 385         .init           = em_x270_ohci_init,
 386 };
 387
 388 static void __init em_x270_init_ohci(void)
 389 {
 390         pxa_set_ohci_info(&em_x270_ohci_platform_data);
 391 }
 392 #else
 393 static inline void em_x270_init_ohci(void) {}
 394 #endif
 395
 396 /* MCI controller setup */
 397 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
 398 static int em_x270_mci_init(struct device *dev,
 399                             irq_handler_t em_x270_detect_int,
 400                             void *data)
 401 {
 402         int err = request_irq(EM_X270_MMC_CD, em_x270_detect_int,
 403                               IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 404                               "MMC card detect", data);
 405         if (err) {
 406                 printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
 407                        __func__, err);
 408                 return err;
 409         }
 410
 411         return 0;
 412 }
 413
 414 static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
 415 {
 416         /*
 417            FIXME: current hardware implementation does not allow to
 418            enable/disable MMC power. This will be fixed in next HW releases,
 419            and we'll need to add implmentation here.
 420         */
 421         return;
 422 }
 423
 424 static void em_x270_mci_exit(struct device *dev, void *data)
 425 {
 426         int irq = gpio_to_irq(GPIO13_MMC_CD);
 427         free_irq(irq, data);
 428 }
 429
 430 static struct pxamci_platform_data em_x270_mci_platform_data = {
 431         .ocr_mask       = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
 432         .init           = em_x270_mci_init,
 433         .setpower       = em_x270_mci_setpower,
 434         .exit           = em_x270_mci_exit,
 435 };
 436
 437 static void __init em_x270_init_mmc(void)
 438 {
 439         pxa_set_mci_info(&em_x270_mci_platform_data);
 440 }
 441 #else
 442 static inline void em_x270_init_mmc(void) {}
 443 #endif
 444
 445 /* LCD 480x640 */
 446 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 447 static struct pxafb_mode_info em_x270_lcd_mode = {
 448         .pixclock       = 50000,
 449         .bpp            = 16,
 450         .xres           = 480,
 451         .yres           = 640,
 452         .hsync_len      = 8,
 453         .vsync_len      = 2,
 454         .left_margin    = 8,
 455         .upper_margin   = 0,
 456         .right_margin   = 24,
 457         .lower_margin   = 4,
 458         .cmap_greyscale = 0,
 459 };
 460
 461 static struct pxafb_mach_info em_x270_lcd = {
 462         .modes          = &em_x270_lcd_mode,
 463         .num_modes      = 1,
 464         .lcd_conn       = LCD_COLOR_TFT_16BPP,
 465 };
 466 static void __init em_x270_init_lcd(void)
 467 {
 468         set_pxa_fb_info(&em_x270_lcd);
 469 }
 470 #else
 471 static inline void em_x270_init_lcd(void) {}
 472 #endif
 473
 474 #if defined(CONFIG_SND_PXA2XX_AC97) || defined(CONFIG_SND_PXA2XX_AC97_MODULE)
 475 static void __init em_x270_init_ac97(void)
 476 {
 477         pxa_set_ac97_info(NULL);
 478 }
 479 #else
 480 static inline void em_x270_init_ac97(void) {}
 481 #endif
 482
 483 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
 484 static unsigned int em_x270_matrix_keys[] = {
 485         KEY(0, 0, KEY_A), KEY(1, 0, KEY_UP), KEY(2, 1, KEY_B),
 486         KEY(0, 2, KEY_LEFT), KEY(1, 1, KEY_ENTER), KEY(2, 0, KEY_RIGHT),
 487         KEY(0, 1, KEY_C), KEY(1, 2, KEY_DOWN), KEY(2, 2, KEY_D),
 488 };
 489
 490 struct pxa27x_keypad_platform_data em_x270_keypad_info = {
 491         /* code map for the matrix keys */
 492         .matrix_key_rows        = 3,
 493         .matrix_key_cols        = 3,
 494         .matrix_key_map         = em_x270_matrix_keys,
 495         .matrix_key_map_size    = ARRAY_SIZE(em_x270_matrix_keys),
 496 };
 497
 498 static void __init em_x270_init_keypad(void)
 499 {
 500         pxa_set_keypad_info(&em_x270_keypad_info);
 501 }
 502 #else
 503 static inline void em_x270_init_keypad(void) {}
 504 #endif
 505
 506 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 507 static struct gpio_keys_button gpio_keys_button[] = {
 508         [0] = {
 509                 .desc   = "sleep/wakeup",
 510                 .code   = KEY_SUSPEND,
 511                 .type   = EV_PWR,
 512                 .gpio   = 1,
 513                 .wakeup = 1,
 514         },
 515 };
 516
 517 static struct gpio_keys_platform_data em_x270_gpio_keys_data = {
 518         .buttons        = gpio_keys_button,
 519         .nbuttons       = 1,
 520 };
 521
 522 static struct platform_device em_x270_gpio_keys = {
 523         .name           = "gpio-keys",
 524         .id             = -1,
 525         .dev            = {
 526                 .platform_data  = &em_x270_gpio_keys_data,
 527         },
 528 };
 529
 530 static void __init em_x270_init_gpio_keys(void)
 531 {
 532         platform_device_register(&em_x270_gpio_keys);
 533 }
 534 #else
 535 static inline void em_x270_init_gpio_keys(void) {}
 536 #endif
 537
 538 static void __init em_x270_init(void)
 539 {
 540         pxa2xx_mfp_config(ARRAY_AND_SIZE(em_x270_pin_config));
 541
 542         em_x270_init_dm9000();
 543         em_x270_init_rtc();
 544         em_x270_init_nand();
 545         em_x270_init_lcd();
 546         em_x270_init_mmc();
 547         em_x270_init_ohci();
 548         em_x270_init_keypad();
 549         em_x270_init_gpio_keys();
 550         em_x270_init_ac97();
 551 }
 552
 553 MACHINE_START(EM_X270, "Compulab EM-X270")
 554         .boot_params    = 0xa0000100,
 555         .phys_io        = 0x40000000,
 556         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 557         .map_io         = pxa_map_io,
 558         .init_irq       = pxa27x_init_irq,
 559         .timer          = &pxa_timer,
 560         .init_machine   = em_x270_init,
 561 MACHINE_END