arch/arm/mach-pxa/palmtx.c

   1 /*
   2  * Hardware definitions for PalmTX
   3  *
   4  * Author:     Marek Vasut <marek.vasut@gmail.com>
   5  *
   6  * Based on work of:
   7  *              Alex Osborne <ato@meshy.org>
   8  *              Cristiano P. <cristianop@users.sourceforge.net>
   9  *              Jan Herman <2hp@seznam.cz>
  10  *              Michal Hrusecky
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  *
  16  * (find more info at www.hackndev.com)
  17  *
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/delay.h>
  22 #include <linux/irq.h>
  23 #include <linux/gpio_keys.h>
  24 #include <linux/input.h>
  25 #include <linux/pda_power.h>
  26 #include <linux/pwm_backlight.h>
  27 #include <linux/gpio.h>
  28 #include <linux/wm97xx_batt.h>
  29 #include <linux/power_supply.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34
  35 #include <mach/pxa27x.h>
  36 #include <mach/audio.h>
  37 #include <mach/palmtx.h>
  38 #include <mach/mmc.h>
  39 #include <mach/pxafb.h>
  40 #include <mach/irda.h>
  41 #include <mach/pxa27x_keypad.h>
  42 #include <mach/udc.h>
  43 #include <mach/palmasoc.h>
  44
  45 #include "generic.h"
  46 #include "devices.h"
  47
  48 /******************************************************************************
  49  * Pin configuration
  50  ******************************************************************************/
  51 static unsigned long palmtx_pin_config[] __initdata = {
  52         /* MMC */
  53         GPIO32_MMC_CLK,
  54         GPIO92_MMC_DAT_0,
  55         GPIO109_MMC_DAT_1,
  56         GPIO110_MMC_DAT_2,
  57         GPIO111_MMC_DAT_3,
  58         GPIO112_MMC_CMD,
  59         GPIO14_GPIO,    /* SD detect */
  60         GPIO114_GPIO,   /* SD power */
  61         GPIO115_GPIO,   /* SD r/o switch */
  62
  63         /* AC97 */
  64         GPIO28_AC97_BITCLK,
  65         GPIO29_AC97_SDATA_IN_0,
  66         GPIO30_AC97_SDATA_OUT,
  67         GPIO31_AC97_SYNC,
  68         GPIO89_AC97_SYSCLK,
  69         GPIO95_AC97_nRESET,
  70
  71         /* IrDA */
  72         GPIO40_GPIO,    /* ir disable */
  73         GPIO46_FICP_RXD,
  74         GPIO47_FICP_TXD,
  75
  76         /* PWM */
  77         GPIO16_PWM0_OUT,
  78
  79         /* USB */
  80         GPIO13_GPIO,    /* usb detect */
  81         GPIO93_GPIO,    /* usb power */
  82
  83         /* PCMCIA */
  84         GPIO48_nPOE,
  85         GPIO49_nPWE,
  86         GPIO50_nPIOR,
  87         GPIO51_nPIOW,
  88         GPIO85_nPCE_1,
  89         GPIO54_nPCE_2,
  90         GPIO79_PSKTSEL,
  91         GPIO55_nPREG,
  92         GPIO56_nPWAIT,
  93         GPIO57_nIOIS16,
  94         GPIO94_GPIO,    /* wifi power 1 */
  95         GPIO108_GPIO,   /* wifi power 2 */
  96         GPIO116_GPIO,   /* wifi ready */
  97
  98         /* MATRIX KEYPAD */
  99         GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
 100         GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
 101         GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
 102         GPIO97_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
 103         GPIO103_KP_MKOUT_0,
 104         GPIO104_KP_MKOUT_1,
 105         GPIO105_KP_MKOUT_2,
 106
 107         /* LCD */
 108         GPIO58_LCD_LDD_0,
 109         GPIO59_LCD_LDD_1,
 110         GPIO60_LCD_LDD_2,
 111         GPIO61_LCD_LDD_3,
 112         GPIO62_LCD_LDD_4,
 113         GPIO63_LCD_LDD_5,
 114         GPIO64_LCD_LDD_6,
 115         GPIO65_LCD_LDD_7,
 116         GPIO66_LCD_LDD_8,
 117         GPIO67_LCD_LDD_9,
 118         GPIO68_LCD_LDD_10,
 119         GPIO69_LCD_LDD_11,
 120         GPIO70_LCD_LDD_12,
 121         GPIO71_LCD_LDD_13,
 122         GPIO72_LCD_LDD_14,
 123         GPIO73_LCD_LDD_15,
 124         GPIO74_LCD_FCLK,
 125         GPIO75_LCD_LCLK,
 126         GPIO76_LCD_PCLK,
 127         GPIO77_LCD_BIAS,
 128
 129         /* MISC. */
 130         GPIO10_GPIO,    /* hotsync button */
 131         GPIO12_GPIO,    /* power detect */
 132         GPIO107_GPIO,   /* earphone detect */
 133 };
 134
 135 /******************************************************************************
 136  * SD/MMC card controller
 137  ******************************************************************************/
 138 static int palmtx_mci_init(struct device *dev, irq_handler_t palmtx_detect_int,
 139                                 void *data)
 140 {
 141         int err = 0;
 142
 143         /* Setup an interrupt for detecting card insert/remove events */
 144         err = gpio_request(GPIO_NR_PALMTX_SD_DETECT_N, "SD IRQ");
 145         if (err)
 146                 goto err;
 147         err = gpio_direction_input(GPIO_NR_PALMTX_SD_DETECT_N);
 148         if (err)
 149                 goto err2;
 150         err = request_irq(gpio_to_irq(GPIO_NR_PALMTX_SD_DETECT_N),
 151                         palmtx_detect_int, IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
 152                         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 153                         "SD/MMC card detect", data);
 154         if (err) {
 155                 printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
 156                                 __func__);
 157                 goto err2;
 158         }
 159
 160         err = gpio_request(GPIO_NR_PALMTX_SD_POWER, "SD_POWER");
 161         if (err)
 162                 goto err3;
 163         err = gpio_direction_output(GPIO_NR_PALMTX_SD_POWER, 0);
 164         if (err)
 165                 goto err4;
 166
 167         err = gpio_request(GPIO_NR_PALMTX_SD_READONLY, "SD_READONLY");
 168         if (err)
 169                 goto err4;
 170         err = gpio_direction_input(GPIO_NR_PALMTX_SD_READONLY);
 171         if (err)
 172                 goto err5;
 173
 174         printk(KERN_DEBUG "%s: irq registered\n", __func__);
 175
 176         return 0;
 177
 178 err5:
 179         gpio_free(GPIO_NR_PALMTX_SD_READONLY);
 180 err4:
 181         gpio_free(GPIO_NR_PALMTX_SD_POWER);
 182 err3:
 183         free_irq(gpio_to_irq(GPIO_NR_PALMTX_SD_DETECT_N), data);
 184 err2:
 185         gpio_free(GPIO_NR_PALMTX_SD_DETECT_N);
 186 err:
 187         return err;
 188 }
 189
 190 static void palmtx_mci_exit(struct device *dev, void *data)
 191 {
 192         gpio_free(GPIO_NR_PALMTX_SD_READONLY);
 193         gpio_free(GPIO_NR_PALMTX_SD_POWER);
 194         free_irq(gpio_to_irq(GPIO_NR_PALMTX_SD_DETECT_N), data);
 195         gpio_free(GPIO_NR_PALMTX_SD_DETECT_N);
 196 }
 197
 198 static void palmtx_mci_power(struct device *dev, unsigned int vdd)
 199 {
 200         struct pxamci_platform_data *p_d = dev->platform_data;
 201         gpio_set_value(GPIO_NR_PALMTX_SD_POWER, p_d->ocr_mask & (1 << vdd));
 202 }
 203
 204 static int palmtx_mci_get_ro(struct device *dev)
 205 {
 206         return gpio_get_value(GPIO_NR_PALMTX_SD_READONLY);
 207 }
 208
 209 static struct pxamci_platform_data palmtx_mci_platform_data = {
 210         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 211         .setpower       = palmtx_mci_power,
 212         .get_ro         = palmtx_mci_get_ro,
 213         .init           = palmtx_mci_init,
 214         .exit           = palmtx_mci_exit,
 215 };
 216
 217 /******************************************************************************
 218  * GPIO keyboard
 219  ******************************************************************************/
 220 static unsigned int palmtx_matrix_keys[] = {
 221         KEY(0, 0, KEY_POWER),
 222         KEY(0, 1, KEY_F1),
 223         KEY(0, 2, KEY_ENTER),
 224
 225         KEY(1, 0, KEY_F2),
 226         KEY(1, 1, KEY_F3),
 227         KEY(1, 2, KEY_F4),
 228
 229         KEY(2, 0, KEY_UP),
 230         KEY(2, 2, KEY_DOWN),
 231
 232         KEY(3, 0, KEY_RIGHT),
 233         KEY(3, 2, KEY_LEFT),
 234 };
 235
 236 static struct pxa27x_keypad_platform_data palmtx_keypad_platform_data = {
 237         .matrix_key_rows        = 4,
 238         .matrix_key_cols        = 3,
 239         .matrix_key_map         = palmtx_matrix_keys,
 240         .matrix_key_map_size    = ARRAY_SIZE(palmtx_matrix_keys),
 241
 242         .debounce_interval      = 30,
 243 };
 244
 245 /******************************************************************************
 246  * GPIO keys
 247  ******************************************************************************/
 248 static struct gpio_keys_button palmtx_pxa_buttons[] = {
 249         {KEY_F8, GPIO_NR_PALMTX_HOTSYNC_BUTTON_N, 1, "HotSync Button" },
 250 };
 251
 252 static struct gpio_keys_platform_data palmtx_pxa_keys_data = {
 253         .buttons        = palmtx_pxa_buttons,
 254         .nbuttons       = ARRAY_SIZE(palmtx_pxa_buttons),
 255 };
 256
 257 static struct platform_device palmtx_pxa_keys = {
 258         .name   = "gpio-keys",
 259         .id     = -1,
 260         .dev    = {
 261                 .platform_data = &palmtx_pxa_keys_data,
 262         },
 263 };
 264
 265 /******************************************************************************
 266  * Backlight
 267  ******************************************************************************/
 268 static int palmtx_backlight_init(struct device *dev)
 269 {
 270         int ret;
 271
 272         ret = gpio_request(GPIO_NR_PALMTX_BL_POWER, "BL POWER");
 273         if (ret)
 274                 goto err;
 275         ret = gpio_direction_output(GPIO_NR_PALMTX_BL_POWER, 0);
 276         if (ret)
 277                 goto err2;
 278         ret = gpio_request(GPIO_NR_PALMTX_LCD_POWER, "LCD POWER");
 279         if (ret)
 280                 goto err2;
 281         ret = gpio_direction_output(GPIO_NR_PALMTX_LCD_POWER, 0);
 282         if (ret)
 283                 goto err3;
 284
 285         return 0;
 286 err3:
 287         gpio_free(GPIO_NR_PALMTX_LCD_POWER);
 288 err2:
 289         gpio_free(GPIO_NR_PALMTX_BL_POWER);
 290 err:
 291         return ret;
 292 }
 293
 294 static int palmtx_backlight_notify(int brightness)
 295 {
 296         gpio_set_value(GPIO_NR_PALMTX_BL_POWER, brightness);
 297         gpio_set_value(GPIO_NR_PALMTX_LCD_POWER, brightness);
 298         return brightness;
 299 }
 300
 301 static void palmtx_backlight_exit(struct device *dev)
 302 {
 303         gpio_free(GPIO_NR_PALMTX_BL_POWER);
 304         gpio_free(GPIO_NR_PALMTX_LCD_POWER);
 305 }
 306
 307 static struct platform_pwm_backlight_data palmtx_backlight_data = {
 308         .pwm_id         = 0,
 309         .max_brightness = PALMTX_MAX_INTENSITY,
 310         .dft_brightness = PALMTX_MAX_INTENSITY,
 311         .pwm_period_ns  = PALMTX_PERIOD_NS,
 312         .init           = palmtx_backlight_init,
 313         .notify         = palmtx_backlight_notify,
 314         .exit           = palmtx_backlight_exit,
 315 };
 316
 317 static struct platform_device palmtx_backlight = {
 318         .name   = "pwm-backlight",
 319         .dev    = {
 320                 .parent         = &pxa27x_device_pwm0.dev,
 321                 .platform_data  = &palmtx_backlight_data,
 322         },
 323 };
 324
 325 /******************************************************************************
 326  * IrDA
 327  ******************************************************************************/
 328 static int palmtx_irda_startup(struct device *dev)
 329 {
 330         int err;
 331         err = gpio_request(GPIO_NR_PALMTX_IR_DISABLE, "IR DISABLE");
 332         if (err)
 333                 goto err;
 334         err = gpio_direction_output(GPIO_NR_PALMTX_IR_DISABLE, 1);
 335         if (err)
 336                 gpio_free(GPIO_NR_PALMTX_IR_DISABLE);
 337 err:
 338         return err;
 339 }
 340
 341 static void palmtx_irda_shutdown(struct device *dev)
 342 {
 343         gpio_free(GPIO_NR_PALMTX_IR_DISABLE);
 344 }
 345
 346 static void palmtx_irda_transceiver_mode(struct device *dev, int mode)
 347 {
 348         gpio_set_value(GPIO_NR_PALMTX_IR_DISABLE, mode & IR_OFF);
 349         pxa2xx_transceiver_mode(dev, mode);
 350 }
 351
 352 static struct pxaficp_platform_data palmtx_ficp_platform_data = {
 353         .startup                = palmtx_irda_startup,
 354         .shutdown               = palmtx_irda_shutdown,
 355         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 356         .transceiver_mode       = palmtx_irda_transceiver_mode,
 357 };
 358
 359 /******************************************************************************
 360  * UDC
 361  ******************************************************************************/
 362 static struct pxa2xx_udc_mach_info palmtx_udc_info __initdata = {
 363         .gpio_vbus              = GPIO_NR_PALMTX_USB_DETECT_N,
 364         .gpio_vbus_inverted     = 1,
 365         .gpio_pullup            = GPIO_NR_PALMTX_USB_PULLUP,
 366         .gpio_pullup_inverted   = 0,
 367 };
 368
 369 /******************************************************************************
 370  * Power supply
 371  ******************************************************************************/
 372 static int power_supply_init(struct device *dev)
 373 {
 374         int ret;
 375
 376         ret = gpio_request(GPIO_NR_PALMTX_POWER_DETECT, "CABLE_STATE_AC");
 377         if (ret)
 378                 goto err1;
 379         ret = gpio_direction_input(GPIO_NR_PALMTX_POWER_DETECT);
 380         if (ret)
 381                 goto err2;
 382
 383         return 0;
 384
 385 err2:
 386         gpio_free(GPIO_NR_PALMTX_POWER_DETECT);
 387 err1:
 388         return ret;
 389 }
 390
 391 static int palmtx_is_ac_online(void)
 392 {
 393         return gpio_get_value(GPIO_NR_PALMTX_POWER_DETECT);
 394 }
 395
 396 static void power_supply_exit(struct device *dev)
 397 {
 398         gpio_free(GPIO_NR_PALMTX_POWER_DETECT);
 399 }
 400
 401 static char *palmtx_supplicants[] = {
 402         "main-battery",
 403 };
 404
 405 static struct pda_power_pdata power_supply_info = {
 406         .init            = power_supply_init,
 407         .is_ac_online    = palmtx_is_ac_online,
 408         .exit            = power_supply_exit,
 409         .supplied_to     = palmtx_supplicants,
 410         .num_supplicants = ARRAY_SIZE(palmtx_supplicants),
 411 };
 412
 413 static struct platform_device power_supply = {
 414         .name = "pda-power",
 415         .id   = -1,
 416         .dev  = {
 417                 .platform_data = &power_supply_info,
 418         },
 419 };
 420
 421 /******************************************************************************
 422  * WM97xx battery
 423  ******************************************************************************/
 424 static struct wm97xx_batt_info wm97xx_batt_pdata = {
 425         .batt_aux       = WM97XX_AUX_ID3,
 426         .temp_aux       = WM97XX_AUX_ID2,
 427         .charge_gpio    = -1,
 428         .max_voltage    = PALMTX_BAT_MAX_VOLTAGE,
 429         .min_voltage    = PALMTX_BAT_MIN_VOLTAGE,
 430         .batt_mult      = 1000,
 431         .batt_div       = 414,
 432         .temp_mult      = 1,
 433         .temp_div       = 1,
 434         .batt_tech      = POWER_SUPPLY_TECHNOLOGY_LIPO,
 435         .batt_name      = "main-batt",
 436 };
 437
 438 /******************************************************************************
 439  * aSoC audio
 440  ******************************************************************************/
 441 static struct palm27x_asoc_info palmtx_asoc_pdata = {
 442         .jack_gpio      = GPIO_NR_PALMTX_EARPHONE_DETECT,
 443 };
 444
 445 static pxa2xx_audio_ops_t palmtx_ac97_pdata = {
 446         .reset_gpio     = 95,
 447 };
 448
 449 static struct platform_device palmtx_asoc = {
 450         .name = "palm27x-asoc",
 451         .id   = -1,
 452         .dev  = {
 453                 .platform_data = &palmtx_asoc_pdata,
 454         },
 455 };
 456
 457 /******************************************************************************
 458  * Framebuffer
 459  ******************************************************************************/
 460 static struct pxafb_mode_info palmtx_lcd_modes[] = {
 461 {
 462         .pixclock       = 57692,
 463         .xres           = 320,
 464         .yres           = 480,
 465         .bpp            = 16,
 466
 467         .left_margin    = 32,
 468         .right_margin   = 1,
 469         .upper_margin   = 7,
 470         .lower_margin   = 1,
 471
 472         .hsync_len      = 4,
 473         .vsync_len      = 1,
 474 },
 475 };
 476
 477 static struct pxafb_mach_info palmtx_lcd_screen = {
 478         .modes          = palmtx_lcd_modes,
 479         .num_modes      = ARRAY_SIZE(palmtx_lcd_modes),
 480         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 481 };
 482
 483 /******************************************************************************
 484  * Power management - standby
 485  ******************************************************************************/
 486 #ifdef CONFIG_PM
 487 static u32 *addr __initdata;
 488 static u32 resume[3] __initdata = {
 489         0xe3a00101,     /* mov  r0,     #0x40000000 */
 490         0xe380060f,     /* orr  r0, r0, #0x00f00000 */
 491         0xe590f008,     /* ldr  pc, [r0, #0x08] */
 492 };
 493
 494 static int __init palmtx_pm_init(void)
 495 {
 496         int i;
 497
 498         /* this is where the bootloader jumps */
 499         addr = phys_to_virt(PALMTX_STR_BASE);
 500
 501         for (i = 0; i < 3; i++)
 502                 addr[i] = resume[i];
 503
 504         return 0;
 505 }
 506
 507 device_initcall(palmtx_pm_init);
 508 #endif
 509
 510 /******************************************************************************
 511  * Machine init
 512  ******************************************************************************/
 513 static struct platform_device *devices[] __initdata = {
 514 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 515         &palmtx_pxa_keys,
 516 #endif
 517         &palmtx_backlight,
 518         &power_supply,
 519         &palmtx_asoc,
 520 };
 521
 522 static struct map_desc palmtx_io_desc[] __initdata = {
 523 {
 524         .virtual        = PALMTX_PCMCIA_VIRT,
 525         .pfn            = __phys_to_pfn(PALMTX_PCMCIA_PHYS),
 526         .length         = PALMTX_PCMCIA_SIZE,
 527         .type           = MT_DEVICE
 528 },
 529 };
 530
 531 static void __init palmtx_map_io(void)
 532 {
 533         pxa_map_io();
 534         iotable_init(palmtx_io_desc, ARRAY_SIZE(palmtx_io_desc));
 535 }
 536
 537 /* setup udc GPIOs initial state */
 538 static void __init palmtx_udc_init(void)
 539 {
 540         if (!gpio_request(GPIO_NR_PALMTX_USB_PULLUP, "UDC Vbus")) {
 541                 gpio_direction_output(GPIO_NR_PALMTX_USB_PULLUP, 1);
 542                 gpio_free(GPIO_NR_PALMTX_USB_PULLUP);
 543         }
 544 }
 545
 546
 547 static void __init palmtx_init(void)
 548 {
 549         pxa2xx_mfp_config(ARRAY_AND_SIZE(palmtx_pin_config));
 550
 551         set_pxa_fb_info(&palmtx_lcd_screen);
 552         pxa_set_mci_info(&palmtx_mci_platform_data);
 553         palmtx_udc_init();
 554         pxa_set_ac97_info(&palmtx_ac97_pdata);
 555         pxa_set_udc_info(&palmtx_udc_info);
 556         pxa_set_ficp_info(&palmtx_ficp_platform_data);
 557         pxa_set_keypad_info(&palmtx_keypad_platform_data);
 558         wm97xx_bat_set_pdata(&wm97xx_batt_pdata);
 559
 560         platform_add_devices(devices, ARRAY_SIZE(devices));
 561 }
 562
 563 MACHINE_START(PALMTX, "Palm T|X")
 564         .phys_io        = PALMTX_PHYS_IO_START,
 565         .io_pg_offst    = io_p2v(0x40000000),
 566         .boot_params    = 0xa0000100,
 567         .map_io         = palmtx_map_io,
 568         .init_irq       = pxa27x_init_irq,
 569         .timer          = &pxa_timer,
 570         .init_machine   = palmtx_init
 571 MACHINE_END