arch/arm/mach-pxa/palmz72.c

   1 /*
   2  * Hardware definitions for Palm Zire72
   3  *
   4  * Authors:
   5  *      Vladimir "Farcaller" Pouzanov <farcaller@gmail.com>
   6  *      Sergey Lapin <slapin@ossfans.org>
   7  *      Alex Osborne <bobofdoom@gmail.com>
   8  *      Jan Herman <2hp@seznam.cz>
   9  *
  10  * Rewrite for mainline:
  11  *      Marek Vasut <marek.vasut@gmail.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  *
  17  * (find more info at www.hackndev.com)
  18  *
  19  */
  20
  21 #include <linux/platform_device.h>
  22 #include <linux/sysdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/irq.h>
  25 #include <linux/gpio_keys.h>
  26 #include <linux/input.h>
  27 #include <linux/pda_power.h>
  28 #include <linux/pwm_backlight.h>
  29 #include <linux/gpio.h>
  30 #include <linux/power_supply.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35
  36 #include <mach/pxa27x.h>
  37 #include <mach/audio.h>
  38 #include <mach/palmz72.h>
  39 #include <mach/mmc.h>
  40 #include <mach/pxafb.h>
  41 #include <mach/irda.h>
  42 #include <mach/pxa27x_keypad.h>
  43 #include <mach/udc.h>
  44 #include <mach/pm.h>
  45
  46 #include "generic.h"
  47 #include "devices.h"
  48
  49 /******************************************************************************
  50  * Pin configuration
  51  ******************************************************************************/
  52 static unsigned long palmz72_pin_config[] __initdata = {
  53         /* MMC */
  54         GPIO32_MMC_CLK,
  55         GPIO92_MMC_DAT_0,
  56         GPIO109_MMC_DAT_1,
  57         GPIO110_MMC_DAT_2,
  58         GPIO111_MMC_DAT_3,
  59         GPIO112_MMC_CMD,
  60         GPIO14_GPIO,    /* SD detect */
  61         GPIO115_GPIO,   /* SD RO */
  62         GPIO98_GPIO,    /* SD power */
  63
  64         /* AC97 */
  65         GPIO28_AC97_BITCLK,
  66         GPIO29_AC97_SDATA_IN_0,
  67         GPIO30_AC97_SDATA_OUT,
  68         GPIO31_AC97_SYNC,
  69
  70         /* IrDA */
  71         GPIO49_GPIO,    /* ir disable */
  72         GPIO46_FICP_RXD,
  73         GPIO47_FICP_TXD,
  74
  75         /* PWM */
  76         GPIO16_PWM0_OUT,
  77
  78         /* USB */
  79         GPIO15_GPIO,    /* usb detect */
  80         GPIO12_GPIO,    /* usb pullup */
  81         GPIO95_GPIO,    /* usb power */
  82
  83         /* Matrix keypad */
  84         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
  85         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
  86         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
  87         GPIO97_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
  88         GPIO103_KP_MKOUT_0,
  89         GPIO104_KP_MKOUT_1,
  90         GPIO105_KP_MKOUT_2,
  91
  92         /* LCD */
  93         GPIO58_LCD_LDD_0,
  94         GPIO59_LCD_LDD_1,
  95         GPIO60_LCD_LDD_2,
  96         GPIO61_LCD_LDD_3,
  97         GPIO62_LCD_LDD_4,
  98         GPIO63_LCD_LDD_5,
  99         GPIO64_LCD_LDD_6,
 100         GPIO65_LCD_LDD_7,
 101         GPIO66_LCD_LDD_8,
 102         GPIO67_LCD_LDD_9,
 103         GPIO68_LCD_LDD_10,
 104         GPIO69_LCD_LDD_11,
 105         GPIO70_LCD_LDD_12,
 106         GPIO71_LCD_LDD_13,
 107         GPIO72_LCD_LDD_14,
 108         GPIO73_LCD_LDD_15,
 109         GPIO74_LCD_FCLK,
 110         GPIO75_LCD_LCLK,
 111         GPIO76_LCD_PCLK,
 112         GPIO77_LCD_BIAS,
 113         GPIO20_GPIO,    /* bl power */
 114         GPIO21_GPIO,    /* LCD border switch */
 115         GPIO22_GPIO,    /* LCD border color */
 116         GPIO96_GPIO,    /* lcd power */
 117
 118         /* Misc. */
 119         GPIO0_GPIO      | WAKEUP_ON_LEVEL_HIGH, /* power detect */
 120         GPIO88_GPIO,                            /* green led */
 121         GPIO27_GPIO,                            /* WM9712 IRQ */
 122 };
 123
 124 /******************************************************************************
 125  * SD/MMC card controller
 126  ******************************************************************************/
 127 static int palmz72_mci_init(struct device *dev,
 128                                 irq_handler_t palmz72_detect_int, void *data)
 129 {
 130         int err = 0;
 131
 132         /* Setup an interrupt for detecting card insert/remove events */
 133         err = gpio_request(GPIO_NR_PALMZ72_SD_DETECT_N, "SD IRQ");
 134         if (err)
 135                 goto err;
 136         err = gpio_direction_input(GPIO_NR_PALMZ72_SD_DETECT_N);
 137         if (err)
 138                 goto err2;
 139         err = request_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N),
 140                         palmz72_detect_int, IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
 141                         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 142                         "SD/MMC card detect", data);
 143         if (err) {
 144                 printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
 145                                 __func__);
 146                 goto err2;
 147         }
 148
 149         /* SD_POWER is not actually power, but it is more like chip
 150          * select, i.e. it is inverted */
 151
 152         err = gpio_request(GPIO_NR_PALMZ72_SD_POWER_N, "SD_POWER");
 153         if (err)
 154                 goto err3;
 155         err = gpio_direction_output(GPIO_NR_PALMZ72_SD_POWER_N, 0);
 156         if (err)
 157                 goto err4;
 158         err = gpio_request(GPIO_NR_PALMZ72_SD_RO, "SD_RO");
 159         if (err)
 160                 goto err4;
 161         err = gpio_direction_input(GPIO_NR_PALMZ72_SD_RO);
 162         if (err)
 163                 goto err5;
 164
 165         printk(KERN_DEBUG "%s: irq registered\n", __func__);
 166
 167         return 0;
 168
 169 err5:
 170         gpio_free(GPIO_NR_PALMZ72_SD_RO);
 171 err4:
 172         gpio_free(GPIO_NR_PALMZ72_SD_POWER_N);
 173 err3:
 174         free_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N), data);
 175 err2:
 176         gpio_free(GPIO_NR_PALMZ72_SD_DETECT_N);
 177 err:
 178         return err;
 179 }
 180
 181 static void palmz72_mci_exit(struct device *dev, void *data)
 182 {
 183         gpio_free(GPIO_NR_PALMZ72_SD_POWER_N);
 184         free_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N), data);
 185         gpio_free(GPIO_NR_PALMZ72_SD_DETECT_N);
 186         gpio_free(GPIO_NR_PALMZ72_SD_RO);
 187 }
 188
 189 static void palmz72_mci_power(struct device *dev, unsigned int vdd)
 190 {
 191         struct pxamci_platform_data *p_d = dev->platform_data;
 192         if (p_d->ocr_mask & (1 << vdd))
 193                 gpio_set_value(GPIO_NR_PALMZ72_SD_POWER_N, 0);
 194         else
 195                 gpio_set_value(GPIO_NR_PALMZ72_SD_POWER_N, 1);
 196 }
 197
 198 static int palmz72_mci_ro(struct device *dev)
 199 {
 200         return gpio_get_value(GPIO_NR_PALMZ72_SD_RO);
 201 }
 202
 203 static struct pxamci_platform_data palmz72_mci_platform_data = {
 204         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 205         .setpower       = palmz72_mci_power,
 206         .get_ro         = palmz72_mci_ro,
 207         .init           = palmz72_mci_init,
 208         .exit           = palmz72_mci_exit,
 209 };
 210
 211 /******************************************************************************
 212  * GPIO keyboard
 213  ******************************************************************************/
 214 static unsigned int palmz72_matrix_keys[] = {
 215         KEY(0, 0, KEY_POWER),
 216         KEY(0, 1, KEY_F1),
 217         KEY(0, 2, KEY_ENTER),
 218
 219         KEY(1, 0, KEY_F2),
 220         KEY(1, 1, KEY_F3),
 221         KEY(1, 2, KEY_F4),
 222
 223         KEY(2, 0, KEY_UP),
 224         KEY(2, 2, KEY_DOWN),
 225
 226         KEY(3, 0, KEY_RIGHT),
 227         KEY(3, 2, KEY_LEFT),
 228 };
 229
 230 static struct pxa27x_keypad_platform_data palmz72_keypad_platform_data = {
 231         .matrix_key_rows        = 4,
 232         .matrix_key_cols        = 3,
 233         .matrix_key_map         = palmz72_matrix_keys,
 234         .matrix_key_map_size    = ARRAY_SIZE(palmz72_matrix_keys),
 235
 236         .debounce_interval      = 30,
 237 };
 238
 239 /******************************************************************************
 240  * Backlight
 241  ******************************************************************************/
 242 static int palmz72_backlight_init(struct device *dev)
 243 {
 244         int ret;
 245
 246         ret = gpio_request(GPIO_NR_PALMZ72_BL_POWER, "BL POWER");
 247         if (ret)
 248                 goto err;
 249         ret = gpio_direction_output(GPIO_NR_PALMZ72_BL_POWER, 0);
 250         if (ret)
 251                 goto err2;
 252         ret = gpio_request(GPIO_NR_PALMZ72_LCD_POWER, "LCD POWER");
 253         if (ret)
 254                 goto err2;
 255         ret = gpio_direction_output(GPIO_NR_PALMZ72_LCD_POWER, 0);
 256         if (ret)
 257                 goto err3;
 258
 259         return 0;
 260 err3:
 261         gpio_free(GPIO_NR_PALMZ72_LCD_POWER);
 262 err2:
 263         gpio_free(GPIO_NR_PALMZ72_BL_POWER);
 264 err:
 265         return ret;
 266 }
 267
 268 static int palmz72_backlight_notify(int brightness)
 269 {
 270         gpio_set_value(GPIO_NR_PALMZ72_BL_POWER, brightness);
 271         gpio_set_value(GPIO_NR_PALMZ72_LCD_POWER, brightness);
 272         return brightness;
 273 }
 274
 275 static void palmz72_backlight_exit(struct device *dev)
 276 {
 277         gpio_free(GPIO_NR_PALMZ72_BL_POWER);
 278         gpio_free(GPIO_NR_PALMZ72_LCD_POWER);
 279 }
 280
 281 static struct platform_pwm_backlight_data palmz72_backlight_data = {
 282         .pwm_id         = 0,
 283         .max_brightness = PALMZ72_MAX_INTENSITY,
 284         .dft_brightness = PALMZ72_MAX_INTENSITY,
 285         .pwm_period_ns  = PALMZ72_PERIOD_NS,
 286         .init           = palmz72_backlight_init,
 287         .notify         = palmz72_backlight_notify,
 288         .exit           = palmz72_backlight_exit,
 289 };
 290
 291 static struct platform_device palmz72_backlight = {
 292         .name   = "pwm-backlight",
 293         .dev    = {
 294                 .parent         = &pxa27x_device_pwm0.dev,
 295                 .platform_data  = &palmz72_backlight_data,
 296         },
 297 };
 298
 299 /******************************************************************************
 300  * IrDA
 301  ******************************************************************************/
 302 static int palmz72_irda_startup(struct device *dev)
 303 {
 304         int err;
 305         err = gpio_request(GPIO_NR_PALMZ72_IR_DISABLE, "IR DISABLE");
 306         if (err)
 307                 goto err;
 308         err = gpio_direction_output(GPIO_NR_PALMZ72_IR_DISABLE, 1);
 309         if (err)
 310                 gpio_free(GPIO_NR_PALMZ72_IR_DISABLE);
 311 err:
 312         return err;
 313 }
 314
 315 static void palmz72_irda_shutdown(struct device *dev)
 316 {
 317         gpio_free(GPIO_NR_PALMZ72_IR_DISABLE);
 318 }
 319
 320 static void palmz72_irda_transceiver_mode(struct device *dev, int mode)
 321 {
 322         gpio_set_value(GPIO_NR_PALMZ72_IR_DISABLE, mode & IR_OFF);
 323         pxa2xx_transceiver_mode(dev, mode);
 324 }
 325
 326 static struct pxaficp_platform_data palmz72_ficp_platform_data = {
 327         .startup                = palmz72_irda_startup,
 328         .shutdown               = palmz72_irda_shutdown,
 329         .transceiver_cap        = IR_SIRMODE | IR_OFF,
 330         .transceiver_mode       = palmz72_irda_transceiver_mode,
 331 };
 332
 333 /******************************************************************************
 334  * LEDs
 335  ******************************************************************************/
 336 static struct gpio_led gpio_leds[] = {
 337         {
 338                 .name                   = "palmz72:green:led",
 339                 .default_trigger        = "none",
 340                 .gpio                   = GPIO_NR_PALMZ72_LED_GREEN,
 341         },
 342 };
 343
 344 static struct gpio_led_platform_data gpio_led_info = {
 345         .leds           = gpio_leds,
 346         .num_leds       = ARRAY_SIZE(gpio_leds),
 347 };
 348
 349 static struct platform_device palmz72_leds = {
 350         .name   = "leds-gpio",
 351         .id     = -1,
 352         .dev    = {
 353                 .platform_data  = &gpio_led_info,
 354         }
 355 };
 356
 357 /******************************************************************************
 358  * Power supply
 359  ******************************************************************************/
 360 static int power_supply_init(struct device *dev)
 361 {
 362         int ret;
 363
 364         ret = gpio_request(GPIO_NR_PALMZ72_POWER_DETECT, "CABLE_STATE_AC");
 365         if (ret)
 366                 goto err1;
 367         ret = gpio_direction_input(GPIO_NR_PALMZ72_POWER_DETECT);
 368         if (ret)
 369                 goto err2;
 370
 371         ret = gpio_request(GPIO_NR_PALMZ72_USB_DETECT_N, "CABLE_STATE_USB");
 372         if (ret)
 373                 goto err2;
 374         ret = gpio_direction_input(GPIO_NR_PALMZ72_USB_DETECT_N);
 375         if (ret)
 376                 goto err3;
 377
 378         return 0;
 379 err3:
 380         gpio_free(GPIO_NR_PALMZ72_USB_DETECT_N);
 381 err2:
 382         gpio_free(GPIO_NR_PALMZ72_POWER_DETECT);
 383 err1:
 384         return ret;
 385 }
 386
 387 static int palmz72_is_ac_online(void)
 388 {
 389         return gpio_get_value(GPIO_NR_PALMZ72_POWER_DETECT);
 390 }
 391
 392 static int palmz72_is_usb_online(void)
 393 {
 394         return !gpio_get_value(GPIO_NR_PALMZ72_USB_DETECT_N);
 395 }
 396
 397 static void power_supply_exit(struct device *dev)
 398 {
 399         gpio_free(GPIO_NR_PALMZ72_USB_DETECT_N);
 400         gpio_free(GPIO_NR_PALMZ72_POWER_DETECT);
 401 }
 402
 403 static char *palmz72_supplicants[] = {
 404         "main-battery",
 405 };
 406
 407 static struct pda_power_pdata power_supply_info = {
 408         .init            = power_supply_init,
 409         .is_ac_online    = palmz72_is_ac_online,
 410         .is_usb_online   = palmz72_is_usb_online,
 411         .exit            = power_supply_exit,
 412         .supplied_to     = palmz72_supplicants,
 413         .num_supplicants = ARRAY_SIZE(palmz72_supplicants),
 414 };
 415
 416 static struct platform_device power_supply = {
 417         .name = "pda-power",
 418         .id   = -1,
 419         .dev  = {
 420                 .platform_data = &power_supply_info,
 421         },
 422 };
 423
 424 /******************************************************************************
 425  * Framebuffer
 426  ******************************************************************************/
 427 static struct pxafb_mode_info palmz72_lcd_modes[] = {
 428 {
 429         .pixclock       = 115384,
 430         .xres           = 320,
 431         .yres           = 320,
 432         .bpp            = 16,
 433
 434         .left_margin    = 27,
 435         .right_margin   = 7,
 436         .upper_margin   = 7,
 437         .lower_margin   = 8,
 438
 439         .hsync_len      = 6,
 440         .vsync_len      = 1,
 441 },
 442 };
 443
 444 static struct pxafb_mach_info palmz72_lcd_screen = {
 445         .modes          = palmz72_lcd_modes,
 446         .num_modes      = ARRAY_SIZE(palmz72_lcd_modes),
 447         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 448 };
 449
 450 #ifdef CONFIG_PM
 451
 452 /* We have some black magic here
 453  * PalmOS ROM on recover expects special struct physical address
 454  * to be transferred via PSPR. Using this struct PalmOS restores
 455  * its state after sleep. As for Linux, we need to setup it the
 456  * same way. More than that, PalmOS ROM changes some values in memory.
 457  * For now only one location is found, which needs special treatment.
 458  * Thanks to Alex Osborne, Andrzej Zaborowski, and lots of other people
 459  * for reading backtraces for me :)
 460  */
 461
 462 #define PALMZ72_SAVE_DWORD ((unsigned long *)0xc0000050)
 463
 464 static struct palmz72_resume_info palmz72_resume_info = {
 465         .magic0 = 0xb4e6,
 466         .magic1 = 1,
 467
 468         /* reset state, MMU off etc */
 469         .arm_control = 0,
 470         .aux_control = 0,
 471         .ttb = 0,
 472         .domain_access = 0,
 473         .process_id = 0,
 474 };
 475
 476 static unsigned long store_ptr;
 477
 478 /* sys_device for Palm Zire 72 PM */
 479
 480 static int palmz72_pm_suspend(struct sys_device *dev, pm_message_t msg)
 481 {
 482         /* setup the resume_info struct for the original bootloader */
 483         palmz72_resume_info.resume_addr = (u32) pxa_cpu_resume;
 484
 485         /* Storing memory touched by ROM */
 486         store_ptr = *PALMZ72_SAVE_DWORD;
 487
 488         /* Setting PSPR to a proper value */
 489         PSPR = virt_to_phys(&palmz72_resume_info);
 490
 491         return 0;
 492 }
 493
 494 static int palmz72_pm_resume(struct sys_device *dev)
 495 {
 496         *PALMZ72_SAVE_DWORD = store_ptr;
 497         return 0;
 498 }
 499
 500 static struct sysdev_class palmz72_pm_sysclass = {
 501         .name = "palmz72_pm",
 502         .suspend = palmz72_pm_suspend,
 503         .resume = palmz72_pm_resume,
 504 };
 505
 506 static struct sys_device palmz72_pm_device = {
 507         .cls = &palmz72_pm_sysclass,
 508 };
 509
 510 static int __init palmz72_pm_init(void)
 511 {
 512         int ret = -ENODEV;
 513         if (machine_is_palmz72()) {
 514                 ret = sysdev_class_register(&palmz72_pm_sysclass);
 515                 if (ret == 0)
 516                         ret = sysdev_register(&palmz72_pm_device);
 517         }
 518         return ret;
 519 }
 520
 521 device_initcall(palmz72_pm_init);
 522 #endif
 523
 524 /******************************************************************************
 525  * Machine init
 526  ******************************************************************************/
 527 static struct platform_device *devices[] __initdata = {
 528         &palmz72_backlight,
 529         &palmz72_leds,
 530         &power_supply,
 531 };
 532
 533 static void __init palmz72_init(void)
 534 {
 535         pxa2xx_mfp_config(ARRAY_AND_SIZE(palmz72_pin_config));
 536         set_pxa_fb_info(&palmz72_lcd_screen);
 537         pxa_set_mci_info(&palmz72_mci_platform_data);
 538         pxa_set_ac97_info(NULL);
 539         pxa_set_ficp_info(&palmz72_ficp_platform_data);
 540         pxa_set_keypad_info(&palmz72_keypad_platform_data);
 541         platform_add_devices(devices, ARRAY_SIZE(devices));
 542 }
 543
 544 MACHINE_START(PALMZ72, "Palm Zire72")
 545         .phys_io        = 0x40000000,
 546         .io_pg_offst    = io_p2v(0x40000000),
 547         .boot_params    = 0xa0000100,
 548         .map_io         = pxa_map_io,
 549         .init_irq       = pxa27x_init_irq,
 550         .timer          = &pxa_timer,
 551         .init_machine   = palmz72_init
 552 MACHINE_END