arch/arm/mach-pxa/z2.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/z2.c
   3  *
   4  *  Support for the Zipit Z2 Handheld device.
   5  *
   6  *  Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com>
   7  *
   8  *  Based on research and code by: Ken McGuire
   9  *  Based on mainstone.c as modified for the Zipit Z2.
  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/platform_device.h>
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/partitions.h>
  19 #include <linux/pwm_backlight.h>
  20 #include <linux/dma-mapping.h>
  21 #include <linux/spi/spi.h>
  22 #include <linux/spi/libertas_spi.h>
  23 #include <linux/spi/lms283gf05.h>
  24 #include <linux/power_supply.h>
  25 #include <linux/mtd/physmap.h>
  26 #include <linux/gpio.h>
  27 #include <linux/gpio_keys.h>
  28 #include <linux/delay.h>
  29
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32
  33 #include <mach/pxa27x.h>
  34 #include <mach/mfp-pxa27x.h>
  35 #include <mach/z2.h>
  36 #include <mach/pxafb.h>
  37 #include <mach/mmc.h>
  38 #include <mach/pxa27x_keypad.h>
  39 #include <mach/pxa2xx_spi.h>
  40
  41 #include <plat/i2c.h>
  42
  43 #include "generic.h"
  44 #include "devices.h"
  45
  46 /******************************************************************************
  47  * Pin configuration
  48  ******************************************************************************/
  49 static unsigned long z2_pin_config[] = {
  50
  51         /* LCD - 16bpp Active TFT */
  52         GPIO58_LCD_LDD_0,
  53         GPIO59_LCD_LDD_1,
  54         GPIO60_LCD_LDD_2,
  55         GPIO61_LCD_LDD_3,
  56         GPIO62_LCD_LDD_4,
  57         GPIO63_LCD_LDD_5,
  58         GPIO64_LCD_LDD_6,
  59         GPIO65_LCD_LDD_7,
  60         GPIO66_LCD_LDD_8,
  61         GPIO67_LCD_LDD_9,
  62         GPIO68_LCD_LDD_10,
  63         GPIO69_LCD_LDD_11,
  64         GPIO70_LCD_LDD_12,
  65         GPIO71_LCD_LDD_13,
  66         GPIO72_LCD_LDD_14,
  67         GPIO73_LCD_LDD_15,
  68         GPIO74_LCD_FCLK,
  69         GPIO75_LCD_LCLK,
  70         GPIO76_LCD_PCLK,
  71         GPIO77_LCD_BIAS,
  72         GPIO19_GPIO,            /* LCD reset */
  73         GPIO88_GPIO,            /* LCD chipselect */
  74
  75         /* PWM */
  76         GPIO115_PWM1_OUT,       /* Keypad Backlight */
  77         GPIO11_PWM2_OUT,        /* LCD Backlight */
  78
  79         /* MMC */
  80         GPIO32_MMC_CLK,
  81         GPIO112_MMC_CMD,
  82         GPIO92_MMC_DAT_0,
  83         GPIO109_MMC_DAT_1,
  84         GPIO110_MMC_DAT_2,
  85         GPIO111_MMC_DAT_3,
  86         GPIO96_GPIO,            /* SD detect */
  87
  88         /* STUART */
  89         GPIO46_STUART_RXD,
  90         GPIO47_STUART_TXD,
  91
  92         /* Keypad */
  93         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
  94         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
  95         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
  96         GPIO34_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
  97         GPIO38_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
  98         GPIO16_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
  99         GPIO17_KP_MKIN_6        | WAKEUP_ON_LEVEL_HIGH,
 100         GPIO103_KP_MKOUT_0,
 101         GPIO104_KP_MKOUT_1,
 102         GPIO105_KP_MKOUT_2,
 103         GPIO106_KP_MKOUT_3,
 104         GPIO107_KP_MKOUT_4,
 105         GPIO108_KP_MKOUT_5,
 106         GPIO35_KP_MKOUT_6,
 107         GPIO41_KP_MKOUT_7,
 108
 109         /* I2C */
 110         GPIO117_I2C_SCL,
 111         GPIO118_I2C_SDA,
 112
 113         /* SSP1 */
 114         GPIO23_SSP1_SCLK,       /* SSP1_SCK */
 115         GPIO25_SSP1_TXD,        /* SSP1_TXD */
 116         GPIO26_SSP1_RXD,        /* SSP1_RXD */
 117
 118         /* SSP2 */
 119         GPIO22_SSP2_SCLK,       /* SSP2_SCK */
 120         GPIO13_SSP2_TXD,        /* SSP2_TXD */
 121         GPIO40_SSP2_RXD,        /* SSP2_RXD */
 122
 123         /* LEDs */
 124         GPIO10_GPIO,            /* WiFi LED */
 125         GPIO83_GPIO,            /* Charging LED */
 126         GPIO85_GPIO,            /* Charged LED */
 127
 128         /* I2S */
 129         GPIO28_I2S_BITCLK_OUT,
 130         GPIO29_I2S_SDATA_IN,
 131         GPIO30_I2S_SDATA_OUT,
 132         GPIO31_I2S_SYNC,
 133         GPIO113_I2S_SYSCLK,
 134
 135         /* MISC */
 136         GPIO0_GPIO,             /* AC power detect */
 137         GPIO1_GPIO,             /* Power button */
 138         GPIO37_GPIO,            /* Headphone detect */
 139         GPIO98_GPIO,            /* Lid switch */
 140         GPIO14_GPIO,            /* WiFi Reset */
 141         GPIO15_GPIO,            /* WiFi Power */
 142         GPIO24_GPIO,            /* WiFi CS */
 143         GPIO36_GPIO,            /* WiFi IRQ */
 144         GPIO88_GPIO,            /* LCD CS */
 145 };
 146
 147 /******************************************************************************
 148  * NOR Flash
 149  ******************************************************************************/
 150 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 151 static struct resource z2_flash_resource = {
 152         .start  = PXA_CS0_PHYS,
 153         .end    = PXA_CS0_PHYS + SZ_8M - 1,
 154         .flags  = IORESOURCE_MEM,
 155 };
 156
 157 static struct mtd_partition z2_flash_parts[] = {
 158         {
 159                 .name   = "U-Boot Bootloader",
 160                 .offset = 0x0,
 161                 .size   = 0x40000,
 162         }, {
 163                 .name   = "U-Boot Environment",
 164                 .offset = 0x40000,
 165                 .size   = 0x60000,
 166         }, {
 167                 .name   = "Flash",
 168                 .offset = 0x60000,
 169                 .size   = MTDPART_SIZ_FULL,
 170         },
 171 };
 172
 173 static struct physmap_flash_data z2_flash_data = {
 174         .width          = 2,
 175         .parts          = z2_flash_parts,
 176         .nr_parts       = ARRAY_SIZE(z2_flash_parts),
 177 };
 178
 179 static struct platform_device z2_flash = {
 180         .name           = "physmap-flash",
 181         .id             = -1,
 182         .resource       = &z2_flash_resource,
 183         .num_resources  = 1,
 184         .dev = {
 185                 .platform_data  = &z2_flash_data,
 186         },
 187 };
 188
 189 static void __init z2_nor_init(void)
 190 {
 191         platform_device_register(&z2_flash);
 192 }
 193 #else
 194 static inline void z2_nor_init(void) {}
 195 #endif
 196
 197 /******************************************************************************
 198  * Backlight
 199  ******************************************************************************/
 200 #if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
 201 static struct platform_pwm_backlight_data z2_backlight_data[] = {
 202         [0] = {
 203                 /* Keypad Backlight */
 204                 .pwm_id         = 1,
 205                 .max_brightness = 1023,
 206                 .dft_brightness = 512,
 207                 .pwm_period_ns  = 1260320,
 208         },
 209         [1] = {
 210                 /* LCD Backlight */
 211                 .pwm_id         = 2,
 212                 .max_brightness = 1023,
 213                 .dft_brightness = 512,
 214                 .pwm_period_ns  = 1260320,
 215         },
 216 };
 217
 218 static struct platform_device z2_backlight_devices[2] = {
 219         {
 220                 .name   = "pwm-backlight",
 221                 .id     = 0,
 222                 .dev    = {
 223                         .platform_data  = &z2_backlight_data[1],
 224                 },
 225         },
 226         {
 227                 .name   = "pwm-backlight",
 228                 .id     = 1,
 229                 .dev    = {
 230                         .platform_data  = &z2_backlight_data[0],
 231                 },
 232         },
 233 };
 234 static void __init z2_pwm_init(void)
 235 {
 236         platform_device_register(&z2_backlight_devices[0]);
 237         platform_device_register(&z2_backlight_devices[1]);
 238 }
 239 #else
 240 static inline void z2_pwm_init(void) {}
 241 #endif
 242
 243 /******************************************************************************
 244  * Framebuffer
 245  ******************************************************************************/
 246 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 247 static struct pxafb_mode_info z2_lcd_modes[] = {
 248 {
 249         .pixclock       = 192000,
 250         .xres           = 240,
 251         .yres           = 320,
 252         .bpp            = 16,
 253
 254         .left_margin    = 4,
 255         .right_margin   = 8,
 256         .upper_margin   = 4,
 257         .lower_margin   = 8,
 258
 259         .hsync_len      = 4,
 260         .vsync_len      = 4,
 261 },
 262 };
 263
 264 static struct pxafb_mach_info z2_lcd_screen = {
 265         .modes          = z2_lcd_modes,
 266         .num_modes      = ARRAY_SIZE(z2_lcd_modes),
 267         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW |
 268                           LCD_ALTERNATE_MAPPING,
 269 };
 270
 271 static void __init z2_lcd_init(void)
 272 {
 273         set_pxa_fb_info(&z2_lcd_screen);
 274 }
 275 #else
 276 static inline void z2_lcd_init(void) {}
 277 #endif
 278
 279 /******************************************************************************
 280  * SD/MMC card controller
 281  ******************************************************************************/
 282 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 283 static struct pxamci_platform_data z2_mci_platform_data = {
 284         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 285         .gpio_card_detect       = GPIO96_ZIPITZ2_SD_DETECT,
 286         .gpio_power             = -1,
 287         .gpio_card_ro           = -1,
 288         .detect_delay_ms        = 200,
 289 };
 290
 291 static void __init z2_mmc_init(void)
 292 {
 293         pxa_set_mci_info(&z2_mci_platform_data);
 294 }
 295 #else
 296 static inline void z2_mmc_init(void) {}
 297 #endif
 298
 299 /******************************************************************************
 300  * LEDs
 301  ******************************************************************************/
 302 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 303 struct gpio_led z2_gpio_leds[] = {
 304 {
 305         .name                   = "z2:green:wifi",
 306         .default_trigger        = "none",
 307         .gpio                   = GPIO10_ZIPITZ2_LED_WIFI,
 308         .active_low             = 1,
 309 }, {
 310         .name                   = "z2:green:charged",
 311         .default_trigger        = "none",
 312         .gpio                   = GPIO85_ZIPITZ2_LED_CHARGED,
 313         .active_low             = 1,
 314 }, {
 315         .name                   = "z2:amber:charging",
 316         .default_trigger        = "none",
 317         .gpio                   = GPIO83_ZIPITZ2_LED_CHARGING,
 318         .active_low             = 1,
 319 },
 320 };
 321
 322 static struct gpio_led_platform_data z2_gpio_led_info = {
 323         .leds           = z2_gpio_leds,
 324         .num_leds       = ARRAY_SIZE(z2_gpio_leds),
 325 };
 326
 327 static struct platform_device z2_leds = {
 328         .name   = "leds-gpio",
 329         .id     = -1,
 330         .dev    = {
 331                 .platform_data  = &z2_gpio_led_info,
 332         }
 333 };
 334
 335 static void __init z2_leds_init(void)
 336 {
 337         platform_device_register(&z2_leds);
 338 }
 339 #else
 340 static inline void z2_leds_init(void) {}
 341 #endif
 342
 343 /******************************************************************************
 344  * GPIO keyboard
 345  ******************************************************************************/
 346 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
 347 static unsigned int z2_matrix_keys[] = {
 348         KEY(0, 0, KEY_OPTION),
 349         KEY(1, 0, KEY_UP),
 350         KEY(2, 0, KEY_DOWN),
 351         KEY(3, 0, KEY_LEFT),
 352         KEY(4, 0, KEY_RIGHT),
 353         KEY(5, 0, KEY_END),
 354         KEY(6, 0, KEY_KPPLUS),
 355
 356         KEY(0, 1, KEY_HOME),
 357         KEY(1, 1, KEY_Q),
 358         KEY(2, 1, KEY_I),
 359         KEY(3, 1, KEY_G),
 360         KEY(4, 1, KEY_X),
 361         KEY(5, 1, KEY_ENTER),
 362         KEY(6, 1, KEY_KPMINUS),
 363
 364         KEY(0, 2, KEY_PAGEUP),
 365         KEY(1, 2, KEY_W),
 366         KEY(2, 2, KEY_O),
 367         KEY(3, 2, KEY_H),
 368         KEY(4, 2, KEY_C),
 369         KEY(5, 2, KEY_LEFTALT),
 370
 371         KEY(0, 3, KEY_PAGEDOWN),
 372         KEY(1, 3, KEY_E),
 373         KEY(2, 3, KEY_P),
 374         KEY(3, 3, KEY_J),
 375         KEY(4, 3, KEY_V),
 376         KEY(5, 3, KEY_LEFTSHIFT),
 377
 378         KEY(0, 4, KEY_ESC),
 379         KEY(1, 4, KEY_R),
 380         KEY(2, 4, KEY_A),
 381         KEY(3, 4, KEY_K),
 382         KEY(4, 4, KEY_B),
 383         KEY(5, 4, KEY_LEFTCTRL),
 384
 385         KEY(0, 5, KEY_TAB),
 386         KEY(1, 5, KEY_T),
 387         KEY(2, 5, KEY_S),
 388         KEY(3, 5, KEY_L),
 389         KEY(4, 5, KEY_N),
 390         KEY(5, 5, KEY_SPACE),
 391
 392         KEY(0, 6, KEY_STOPCD),
 393         KEY(1, 6, KEY_Y),
 394         KEY(2, 6, KEY_D),
 395         KEY(3, 6, KEY_BACKSPACE),
 396         KEY(4, 6, KEY_M),
 397         KEY(5, 6, KEY_COMMA),
 398
 399         KEY(0, 7, KEY_PLAYCD),
 400         KEY(1, 7, KEY_U),
 401         KEY(2, 7, KEY_F),
 402         KEY(3, 7, KEY_Z),
 403         KEY(4, 7, KEY_SEMICOLON),
 404         KEY(5, 7, KEY_DOT),
 405 };
 406
 407 static struct pxa27x_keypad_platform_data z2_keypad_platform_data = {
 408         .matrix_key_rows        = 7,
 409         .matrix_key_cols        = 8,
 410         .matrix_key_map         = z2_matrix_keys,
 411         .matrix_key_map_size    = ARRAY_SIZE(z2_matrix_keys),
 412
 413         .debounce_interval      = 30,
 414 };
 415
 416 static void __init z2_mkp_init(void)
 417 {
 418         pxa_set_keypad_info(&z2_keypad_platform_data);
 419 }
 420 #else
 421 static inline void z2_mkp_init(void) {}
 422 #endif
 423
 424 /******************************************************************************
 425  * GPIO keys
 426  ******************************************************************************/
 427 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 428 static struct gpio_keys_button z2_pxa_buttons[] = {
 429         {KEY_POWER, GPIO1_ZIPITZ2_POWER_BUTTON, 0, "Power Button" },
 430         {KEY_CLOSE, GPIO98_ZIPITZ2_LID_BUTTON, 0, "Lid Button" },
 431 };
 432
 433 static struct gpio_keys_platform_data z2_pxa_keys_data = {
 434         .buttons        = z2_pxa_buttons,
 435         .nbuttons       = ARRAY_SIZE(z2_pxa_buttons),
 436 };
 437
 438 static struct platform_device z2_pxa_keys = {
 439         .name   = "gpio-keys",
 440         .id     = -1,
 441         .dev    = {
 442                 .platform_data = &z2_pxa_keys_data,
 443         },
 444 };
 445
 446 static void __init z2_keys_init(void)
 447 {
 448         platform_device_register(&z2_pxa_keys);
 449 }
 450 #else
 451 static inline void z2_keys_init(void) {}
 452 #endif
 453
 454 /******************************************************************************
 455  * SSP Devices - WiFi and LCD control
 456  ******************************************************************************/
 457 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
 458 /* WiFi */
 459 static int z2_lbs_spi_setup(struct spi_device *spi)
 460 {
 461         int ret = 0;
 462
 463         ret = gpio_request(GPIO15_ZIPITZ2_WIFI_POWER, "WiFi Power");
 464         if (ret)
 465                 goto err;
 466
 467         ret = gpio_direction_output(GPIO15_ZIPITZ2_WIFI_POWER, 1);
 468         if (ret)
 469                 goto err2;
 470
 471         ret = gpio_request(GPIO14_ZIPITZ2_WIFI_RESET, "WiFi Reset");
 472         if (ret)
 473                 goto err2;
 474
 475         ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_RESET, 0);
 476         if (ret)
 477                 goto err3;
 478
 479         /* Reset the card */
 480         mdelay(180);
 481         gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 1);
 482         mdelay(20);
 483
 484         spi->bits_per_word = 16;
 485         spi->mode = SPI_MODE_2,
 486
 487         spi_setup(spi);
 488
 489         return 0;
 490
 491 err3:
 492         gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
 493 err2:
 494         gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
 495 err:
 496         return ret;
 497 };
 498
 499 static int z2_lbs_spi_teardown(struct spi_device *spi)
 500 {
 501         gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 0);
 502         gpio_set_value(GPIO15_ZIPITZ2_WIFI_POWER, 0);
 503         gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
 504         gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
 505         return 0;
 506
 507 };
 508
 509 static struct pxa2xx_spi_chip z2_lbs_chip_info = {
 510         .rx_threshold   = 8,
 511         .tx_threshold   = 8,
 512         .timeout        = 1000,
 513         .gpio_cs        = GPIO24_ZIPITZ2_WIFI_CS,
 514 };
 515
 516 static struct libertas_spi_platform_data z2_lbs_pdata = {
 517         .use_dummy_writes       = 1,
 518         .setup                  = z2_lbs_spi_setup,
 519         .teardown               = z2_lbs_spi_teardown,
 520 };
 521
 522 /* LCD */
 523 static struct pxa2xx_spi_chip lms283_chip_info = {
 524         .rx_threshold   = 1,
 525         .tx_threshold   = 1,
 526         .timeout        = 64,
 527         .gpio_cs        = GPIO88_ZIPITZ2_LCD_CS,
 528 };
 529
 530 static const struct lms283gf05_pdata lms283_pdata = {
 531         .reset_gpio     = GPIO19_ZIPITZ2_LCD_RESET,
 532 };
 533
 534 static struct spi_board_info spi_board_info[] __initdata = {
 535 {
 536         .modalias               = "libertas_spi",
 537         .platform_data          = &z2_lbs_pdata,
 538         .controller_data        = &z2_lbs_chip_info,
 539         .irq                    = gpio_to_irq(GPIO36_ZIPITZ2_WIFI_IRQ),
 540         .max_speed_hz           = 13000000,
 541         .bus_num                = 1,
 542         .chip_select            = 0,
 543 },
 544 {
 545         .modalias               = "lms283gf05",
 546         .controller_data        = &lms283_chip_info,
 547         .platform_data          = &lms283_pdata,
 548         .max_speed_hz           = 400000,
 549         .bus_num                = 2,
 550         .chip_select            = 0,
 551 },
 552 };
 553
 554 static struct pxa2xx_spi_master pxa_ssp1_master_info = {
 555         .clock_enable   = CKEN_SSP,
 556         .num_chipselect = 1,
 557         .enable_dma     = 1,
 558 };
 559
 560 static struct pxa2xx_spi_master pxa_ssp2_master_info = {
 561         .clock_enable   = CKEN_SSP2,
 562         .num_chipselect = 1,
 563 };
 564
 565 static void __init z2_spi_init(void)
 566 {
 567         pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
 568         pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
 569         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 570 }
 571 #else
 572 static inline void z2_spi_init(void) {}
 573 #endif
 574
 575 /******************************************************************************
 576  * Machine init
 577  ******************************************************************************/
 578 static void __init z2_init(void)
 579 {
 580         pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
 581
 582         z2_lcd_init();
 583         z2_mmc_init();
 584         z2_mkp_init();
 585
 586         pxa_set_i2c_info(NULL);
 587
 588         z2_spi_init();
 589         z2_nor_init();
 590         z2_pwm_init();
 591         z2_leds_init();
 592         z2_keys_init();
 593 }
 594
 595 MACHINE_START(ZIPIT2, "Zipit Z2")
 596         .phys_io        = 0x40000000,
 597         .boot_params    = 0xa0000100,
 598         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 599         .map_io         = pxa_map_io,
 600         .init_irq       = pxa27x_init_irq,
 601         .timer          = &pxa_timer,
 602         .init_machine   = z2_init,
 603 MACHINE_END