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  *  Author:     Ken McGuire
   7  *  Created:    Jan 25, 2009
   8  *  Based on mainstone.c as modified for the Zipit Z2.
   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
  15 #include <linux/platform_device.h>
  16 #include <linux/mtd/mtd.h>
  17 #include <linux/mtd/partitions.h>
  18 #include <linux/pwm_backlight.h>
  19 #include <linux/dma-mapping.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/spi/libertas_spi.h>
  22 #include <linux/spi/lms283gf05.h>
  23 #include <linux/power_supply.h>
  24 #include <linux/mtd/physmap.h>
  25 #include <linux/gpio.h>
  26 #include <linux/gpio_keys.h>
  27 #include <linux/delay.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31
  32 #include <mach/pxa27x.h>
  33 #include <mach/mfp-pxa27x.h>
  34 #include <mach/z2.h>
  35 #include <mach/pxafb.h>
  36 #include <mach/mmc.h>
  37 #include <mach/pxa27x_keypad.h>
  38 #include <mach/pxa2xx_spi.h>
  39
  40 #include <plat/i2c.h>
  41
  42 #include "generic.h"
  43 #include "devices.h"
  44
  45 /******************************************************************************
  46  * Pin configuration
  47  ******************************************************************************/
  48 static unsigned long z2_pin_config[] = {
  49
  50         /* LCD - 16bpp Active TFT */
  51         GPIO58_LCD_LDD_0,
  52         GPIO59_LCD_LDD_1,
  53         GPIO60_LCD_LDD_2,
  54         GPIO61_LCD_LDD_3,
  55         GPIO62_LCD_LDD_4,
  56         GPIO63_LCD_LDD_5,
  57         GPIO64_LCD_LDD_6,
  58         GPIO65_LCD_LDD_7,
  59         GPIO66_LCD_LDD_8,
  60         GPIO67_LCD_LDD_9,
  61         GPIO68_LCD_LDD_10,
  62         GPIO69_LCD_LDD_11,
  63         GPIO70_LCD_LDD_12,
  64         GPIO71_LCD_LDD_13,
  65         GPIO72_LCD_LDD_14,
  66         GPIO73_LCD_LDD_15,
  67         GPIO74_LCD_FCLK,
  68         GPIO75_LCD_LCLK,
  69         GPIO76_LCD_PCLK,
  70         GPIO77_LCD_BIAS,
  71         GPIO19_GPIO,            /* LCD reset */
  72         GPIO88_GPIO,            /* LCD chipselect */
  73
  74         /* PWM */
  75         GPIO115_PWM1_OUT,       /* Keypad Backlight */
  76         GPIO11_PWM2_OUT,        /* LCD Backlight */
  77
  78         /* MMC */
  79         GPIO32_MMC_CLK,
  80         GPIO112_MMC_CMD,
  81         GPIO92_MMC_DAT_0,
  82         GPIO109_MMC_DAT_1,
  83         GPIO110_MMC_DAT_2,
  84         GPIO111_MMC_DAT_3,
  85         GPIO96_GPIO,            /* SD detect */
  86
  87         /* STUART */
  88         GPIO46_STUART_RXD,
  89         GPIO47_STUART_TXD,
  90
  91         /* Keypad */
  92         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
  93         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
  94         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
  95         GPIO34_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
  96         GPIO38_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
  97         GPIO16_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
  98         GPIO17_KP_MKIN_6        | WAKEUP_ON_LEVEL_HIGH,
  99         GPIO103_KP_MKOUT_0,
 100         GPIO104_KP_MKOUT_1,
 101         GPIO105_KP_MKOUT_2,
 102         GPIO106_KP_MKOUT_3,
 103         GPIO107_KP_MKOUT_4,
 104         GPIO108_KP_MKOUT_5,
 105         GPIO35_KP_MKOUT_6,
 106         GPIO41_KP_MKOUT_7,
 107
 108         /* I2C */
 109         GPIO117_I2C_SCL,
 110         GPIO118_I2C_SDA,
 111
 112         /* SSP1 */
 113         GPIO23_SSP1_SCLK,       /* SSP1_SCK */
 114         GPIO25_SSP1_TXD,        /* SSP1_TXD */
 115         GPIO26_SSP1_RXD,        /* SSP1_RXD */
 116
 117         /* SSP2 */
 118         GPIO22_SSP2_SCLK,       /* SSP2_SCK */
 119         GPIO13_SSP2_TXD,        /* SSP2_TXD */
 120         GPIO40_SSP2_RXD,        /* SSP2_RXD */
 121
 122         /* LEDs */
 123         GPIO10_GPIO,            /* WiFi LED */
 124         GPIO83_GPIO,            /* Charging LED */
 125         GPIO85_GPIO,            /* Charged LED */
 126
 127         /* I2S */
 128         GPIO28_I2S_BITCLK_OUT,
 129         GPIO29_I2S_SDATA_IN,
 130         GPIO30_I2S_SDATA_OUT,
 131         GPIO31_I2S_SYNC,
 132         GPIO113_I2S_SYSCLK,
 133
 134         /* MISC */
 135         GPIO0_GPIO,             /* AC power detect */
 136         GPIO1_GPIO,             /* Power button */
 137         GPIO37_GPIO,            /* Headphone detect */
 138         GPIO98_GPIO,            /* Lid switch */
 139         GPIO14_GPIO,            /* WiFi Reset */
 140         GPIO15_GPIO,            /* WiFi Power */
 141         GPIO24_GPIO,            /* WiFi CS */
 142         GPIO36_GPIO,            /* WiFi IRQ */
 143         GPIO88_GPIO,            /* LCD CS */
 144 };
 145
 146 /******************************************************************************
 147  * NOR Flash
 148  ******************************************************************************/
 149 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 150 static struct resource z2_flash_resource = {
 151         .start  = PXA_CS0_PHYS,
 152         .end    = PXA_CS0_PHYS + SZ_8M - 1,
 153         .flags  = IORESOURCE_MEM,
 154 };
 155
 156 static struct mtd_partition z2_flash_parts[] = {
 157         {
 158                 .name   = "U-Boot Bootloader",
 159                 .offset = 0x0,
 160                 .size   = 0x20000,
 161         },
 162         {
 163                 .name   = "Linux Kernel",
 164                 .offset = 0x20000,
 165                 .size   = 0x220000,
 166         },
 167         {
 168                 .name   = "Filesystem",
 169                 .offset = 0x240000,
 170                 .size   = 0x5b0000,
 171         },
 172         {
 173                 .name   = "U-Boot Environment",
 174                 .offset = 0x7f0000,
 175                 .size   = MTDPART_SIZ_FULL,
 176         },
 177 };
 178
 179 static struct physmap_flash_data z2_flash_data = {
 180         .width          = 2,
 181         .parts          = z2_flash_parts,
 182         .nr_parts       = ARRAY_SIZE(z2_flash_parts),
 183 };
 184
 185 static struct platform_device z2_flash = {
 186         .name           = "physmap-flash",
 187         .id             = -1,
 188         .resource       = &z2_flash_resource,
 189         .num_resources  = 1,
 190         .dev = {
 191                 .platform_data  = &z2_flash_data,
 192         },
 193 };
 194
 195 static void __init z2_nor_init(void)
 196 {
 197         platform_device_register(&z2_flash);
 198 }
 199 #else
 200 static inline void z2_nor_init(void) {}
 201 #endif
 202
 203 /******************************************************************************
 204  * Backlight
 205  ******************************************************************************/
 206 #if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
 207 static struct platform_pwm_backlight_data z2_backlight_data[] = {
 208         [0] = {
 209                 /* Keypad Backlight */
 210                 .pwm_id         = 1,
 211                 .max_brightness = 1023,
 212                 .dft_brightness = 512,
 213                 .pwm_period_ns  = 1260320,
 214         },
 215         [1] = {
 216                 /* LCD Backlight */
 217                 .pwm_id         = 2,
 218                 .max_brightness = 1023,
 219                 .dft_brightness = 512,
 220                 .pwm_period_ns  = 1260320,
 221         },
 222 };
 223
 224 static struct platform_device z2_backlight_devices[2] = {
 225         {
 226                 .name   = "pwm-backlight",
 227                 .id     = 0,
 228                 .dev    = {
 229                         .platform_data  = &z2_backlight_data[1],
 230                 },
 231         },
 232         {
 233                 .name   = "pwm-backlight",
 234                 .id     = 1,
 235                 .dev    = {
 236                         .platform_data  = &z2_backlight_data[0],
 237                 },
 238         },
 239 };
 240 static void __init z2_pwm_init(void)
 241 {
 242         platform_device_register(&z2_backlight_devices[0]);
 243         platform_device_register(&z2_backlight_devices[1]);
 244 }
 245 #else
 246 static inline void z2_pwm_init(void) {}
 247 #endif
 248
 249 /******************************************************************************
 250  * Framebuffer
 251  ******************************************************************************/
 252 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
 253 static struct pxafb_mode_info z2_lcd_modes[] = {
 254 {
 255         .pixclock       = 192000,
 256         .xres           = 240,
 257         .yres           = 320,
 258         .bpp            = 16,
 259
 260         .left_margin    = 4,
 261         .right_margin   = 8,
 262         .upper_margin   = 4,
 263         .lower_margin   = 8,
 264
 265         .hsync_len      = 4,
 266         .vsync_len      = 4,
 267 },
 268 };
 269
 270 static struct pxafb_mach_info z2_lcd_screen = {
 271         .modes          = z2_lcd_modes,
 272         .num_modes      = ARRAY_SIZE(z2_lcd_modes),
 273         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW |
 274                           LCD_ALTERNATE_MAPPING,
 275 };
 276
 277 static void __init z2_lcd_init(void)
 278 {
 279         set_pxa_fb_info(&z2_lcd_screen);
 280 }
 281 #else
 282 static inline void z2_lcd_init(void) {}
 283 #endif
 284
 285 /******************************************************************************
 286  * SD/MMC card controller
 287  ******************************************************************************/
 288 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
 289 static struct pxamci_platform_data z2_mci_platform_data = {
 290         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
 291         .gpio_card_detect       = GPIO96_ZIPITZ2_SD_DETECT,
 292         .gpio_power             = -1,
 293         .gpio_card_ro           = -1,
 294         .detect_delay_ms        = 200,
 295 };
 296
 297 static void __init z2_mmc_init(void)
 298 {
 299         pxa_set_mci_info(&z2_mci_platform_data);
 300 }
 301 #else
 302 static inline void z2_mmc_init(void) {}
 303 #endif
 304
 305 /******************************************************************************
 306  * LEDs
 307  ******************************************************************************/
 308 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 309 struct gpio_led z2_gpio_leds[] = {
 310 {
 311         .name                   = "z2:green:wifi",
 312         .default_trigger        = "none",
 313         .gpio                   = GPIO10_ZIPITZ2_LED_WIFI,
 314         .active_low             = 1,
 315 }, {
 316         .name                   = "z2:green:charged",
 317         .default_trigger        = "none",
 318         .gpio                   = GPIO85_ZIPITZ2_LED_CHARGED,
 319         .active_low             = 1,
 320 }, {
 321         .name                   = "z2:amber:charging",
 322         .default_trigger        = "none",
 323         .gpio                   = GPIO83_ZIPITZ2_LED_CHARGING,
 324         .active_low             = 1,
 325 },
 326 };
 327
 328 static struct gpio_led_platform_data z2_gpio_led_info = {
 329         .leds           = z2_gpio_leds,
 330         .num_leds       = ARRAY_SIZE(z2_gpio_leds),
 331 };
 332
 333 static struct platform_device z2_leds = {
 334         .name   = "leds-gpio",
 335         .id     = -1,
 336         .dev    = {
 337                 .platform_data  = &z2_gpio_led_info,
 338         }
 339 };
 340
 341 static void __init z2_leds_init(void)
 342 {
 343         platform_device_register(&z2_leds);
 344 }
 345 #else
 346 static inline void z2_leds_init(void) {}
 347 #endif
 348
 349 /******************************************************************************
 350  * GPIO keyboard
 351  ******************************************************************************/
 352 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
 353 static unsigned int z2_matrix_keys[] = {
 354         KEY(0, 0, KEY_OPTION),
 355         KEY(1, 0, KEY_UP),
 356         KEY(2, 0, KEY_DOWN),
 357         KEY(3, 0, KEY_LEFT),
 358         KEY(4, 0, KEY_RIGHT),
 359         KEY(5, 0, KEY_END),
 360         KEY(6, 0, KEY_KPPLUS),
 361
 362         KEY(0, 1, KEY_HOME),
 363         KEY(1, 1, KEY_Q),
 364         KEY(2, 1, KEY_I),
 365         KEY(3, 1, KEY_G),
 366         KEY(4, 1, KEY_X),
 367         KEY(5, 1, KEY_ENTER),
 368         KEY(6, 1, KEY_KPMINUS),
 369
 370         KEY(0, 2, KEY_PAGEUP),
 371         KEY(1, 2, KEY_W),
 372         KEY(2, 2, KEY_O),
 373         KEY(3, 2, KEY_H),
 374         KEY(4, 2, KEY_C),
 375         KEY(5, 2, KEY_LEFTALT),
 376
 377         KEY(0, 3, KEY_PAGEDOWN),
 378         KEY(1, 3, KEY_E),
 379         KEY(2, 3, KEY_P),
 380         KEY(3, 3, KEY_J),
 381         KEY(4, 3, KEY_V),
 382         KEY(5, 3, KEY_LEFTSHIFT),
 383
 384         KEY(0, 4, KEY_ESC),
 385         KEY(1, 4, KEY_R),
 386         KEY(2, 4, KEY_A),
 387         KEY(3, 4, KEY_K),
 388         KEY(4, 4, KEY_B),
 389         KEY(5, 4, KEY_LEFTCTRL),
 390
 391         KEY(0, 5, KEY_TAB),
 392         KEY(1, 5, KEY_T),
 393         KEY(2, 5, KEY_S),
 394         KEY(3, 5, KEY_L),
 395         KEY(4, 5, KEY_N),
 396         KEY(5, 5, KEY_SPACE),
 397
 398         KEY(0, 6, KEY_STOPCD),
 399         KEY(1, 6, KEY_Y),
 400         KEY(2, 6, KEY_D),
 401         KEY(3, 6, KEY_BACKSPACE),
 402         KEY(4, 6, KEY_M),
 403         KEY(5, 6, KEY_COMMA),
 404
 405         KEY(0, 7, KEY_PLAYCD),
 406         KEY(1, 7, KEY_U),
 407         KEY(2, 7, KEY_F),
 408         KEY(3, 7, KEY_Z),
 409         KEY(4, 7, KEY_SEMICOLON),
 410         KEY(5, 7, KEY_DOT),
 411 };
 412
 413 static struct pxa27x_keypad_platform_data z2_keypad_platform_data = {
 414         .matrix_key_rows        = 7,
 415         .matrix_key_cols        = 8,
 416         .matrix_key_map         = z2_matrix_keys,
 417         .matrix_key_map_size    = ARRAY_SIZE(z2_matrix_keys),
 418
 419         .debounce_interval      = 30,
 420 };
 421
 422 static void __init z2_mkp_init(void)
 423 {
 424         pxa_set_keypad_info(&z2_keypad_platform_data);
 425 }
 426 #else
 427 static inline void z2_mkp_init(void) {}
 428 #endif
 429
 430 /******************************************************************************
 431  * GPIO keys
 432  ******************************************************************************/
 433 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 434 static struct gpio_keys_button z2_pxa_buttons[] = {
 435         {KEY_POWER, GPIO1_ZIPITZ2_POWER_BUTTON, 0, "Power Button" },
 436         {KEY_CLOSE, GPIO98_ZIPITZ2_LID_BUTTON, 0, "Lid Button" },
 437 };
 438
 439 static struct gpio_keys_platform_data z2_pxa_keys_data = {
 440         .buttons        = z2_pxa_buttons,
 441         .nbuttons       = ARRAY_SIZE(z2_pxa_buttons),
 442 };
 443
 444 static struct platform_device z2_pxa_keys = {
 445         .name   = "gpio-keys",
 446         .id     = -1,
 447         .dev    = {
 448                 .platform_data = &z2_pxa_keys_data,
 449         },
 450 };
 451
 452 static void __init z2_keys_init(void)
 453 {
 454         platform_device_register(&z2_pxa_keys);
 455 }
 456 #else
 457 static inline void z2_keys_init(void) {}
 458 #endif
 459
 460 /******************************************************************************
 461  * SSP Devices - WiFi and LCD control
 462  ******************************************************************************/
 463 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
 464 /* WiFi */
 465 static int z2_lbs_spi_setup(struct spi_device *spi)
 466 {
 467         int ret = 0;
 468
 469         ret = gpio_request(GPIO15_ZIPITZ2_WIFI_POWER, "WiFi Power");
 470         if (ret)
 471                 goto err;
 472
 473         ret = gpio_direction_output(GPIO15_ZIPITZ2_WIFI_POWER, 1);
 474         if (ret)
 475                 goto err2;
 476
 477         ret = gpio_request(GPIO14_ZIPITZ2_WIFI_RESET, "WiFi Reset");
 478         if (ret)
 479                 goto err2;
 480
 481         ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_RESET, 0);
 482         if (ret)
 483                 goto err3;
 484
 485         /* Reset the card */
 486         mdelay(180);
 487         gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 1);
 488         mdelay(20);
 489
 490         spi->bits_per_word = 16;
 491         spi->mode = SPI_MODE_2,
 492
 493         spi_setup(spi);
 494
 495         return 0;
 496
 497 err3:
 498         gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
 499 err2:
 500         gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
 501 err:
 502         return ret;
 503 };
 504
 505 static int z2_lbs_spi_teardown(struct spi_device *spi)
 506 {
 507         gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 0);
 508         gpio_set_value(GPIO15_ZIPITZ2_WIFI_POWER, 0);
 509         gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
 510         gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
 511         return 0;
 512
 513 };
 514
 515 static struct pxa2xx_spi_chip z2_lbs_chip_info = {
 516         .rx_threshold   = 8,
 517         .tx_threshold   = 8,
 518         .timeout        = 1000,
 519         .gpio_cs        = GPIO24_ZIPITZ2_WIFI_CS,
 520 };
 521
 522 static struct libertas_spi_platform_data z2_lbs_pdata = {
 523         .use_dummy_writes       = 1,
 524         .setup                  = z2_lbs_spi_setup,
 525         .teardown               = z2_lbs_spi_teardown,
 526 };
 527
 528 /* LCD */
 529 static struct pxa2xx_spi_chip lms283_chip_info = {
 530         .rx_threshold   = 1,
 531         .tx_threshold   = 1,
 532         .timeout        = 64,
 533         .gpio_cs        = GPIO88_ZIPITZ2_LCD_CS,
 534 };
 535
 536 static const struct lms283gf05_pdata lms283_pdata = {
 537         .reset_gpio     = GPIO19_ZIPITZ2_LCD_RESET,
 538 };
 539
 540 static struct spi_board_info spi_board_info[] __initdata = {
 541 {
 542         .modalias               = "libertas_spi",
 543         .platform_data          = &z2_lbs_pdata,
 544         .controller_data        = &z2_lbs_chip_info,
 545         .irq                    = gpio_to_irq(GPIO36_ZIPITZ2_WIFI_IRQ),
 546         .max_speed_hz           = 13000000,
 547         .bus_num                = 1,
 548         .chip_select            = 0,
 549 },
 550 {
 551         .modalias               = "lms283gf05",
 552         .controller_data        = &lms283_chip_info,
 553         .platform_data          = &lms283_pdata,
 554         .max_speed_hz           = 400000,
 555         .bus_num                = 2,
 556         .chip_select            = 0,
 557 },
 558 };
 559
 560 static struct pxa2xx_spi_master pxa_ssp1_master_info = {
 561         .clock_enable   = CKEN_SSP,
 562         .num_chipselect = 1,
 563         .enable_dma     = 1,
 564 };
 565
 566 static struct pxa2xx_spi_master pxa_ssp2_master_info = {
 567         .clock_enable   = CKEN_SSP2,
 568         .num_chipselect = 1,
 569 };
 570
 571 static void __init z2_spi_init(void)
 572 {
 573         pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
 574         pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
 575         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 576 }
 577 #else
 578 static inline void z2_spi_init(void) {}
 579 #endif
 580
 581 /******************************************************************************
 582  * Machine init
 583  ******************************************************************************/
 584 static void __init z2_init(void)
 585 {
 586         pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
 587
 588         z2_lcd_init();
 589         z2_mmc_init();
 590         z2_mkp_init();
 591
 592         pxa_set_i2c_info(NULL);
 593
 594         z2_spi_init();
 595         z2_nor_init();
 596         z2_pwm_init();
 597         z2_leds_init();
 598         z2_keys_init();
 599 }
 600
 601 MACHINE_START(ZIPIT2, "Zipit Z2")
 602         .phys_io        = 0x40000000,
 603         .boot_params    = 0xa0000100,
 604         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 605         .map_io         = pxa_map_io,
 606         .init_irq       = pxa27x_init_irq,
 607         .timer          = &pxa_timer,
 608         .init_machine   = z2_init,
 609 MACHINE_END