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/audio.h>
  37 #include <mach/palmz72.h>
  38 #include <mach/mmc.h>
  39 #include <mach/pxafb.h>
  40 #include <mach/pxa-regs.h>
  41 #include <mach/pxa2xx-regs.h>
  42 #include <mach/mfp-pxa27x.h>
  43 #include <mach/irda.h>
  44 #include <mach/pxa27x_keypad.h>
  45 #include <mach/udc.h>
  46 #include <mach/pm.h>
  47
  48 #include "generic.h"
  49 #include "devices.h"
  50
  51 /******************************************************************************
  52  * Pin configuration
  53  ******************************************************************************/
  54 static unsigned long palmz72_pin_config[] __initdata = {
  55         /* MMC */
  56         GPIO32_MMC_CLK,
  57         GPIO92_MMC_DAT_0,
  58         GPIO109_MMC_DAT_1,
  59         GPIO110_MMC_DAT_2,
  60         GPIO111_MMC_DAT_3,
  61         GPIO112_MMC_CMD,
  62         GPIO14_GPIO,    /* SD detect */
  63         GPIO115_GPIO,   /* SD RO */
  64         GPIO98_GPIO,    /* SD power */
  65
  66         /* AC97 */
  67         GPIO28_AC97_BITCLK,
  68         GPIO29_AC97_SDATA_IN_0,
  69         GPIO30_AC97_SDATA_OUT,
  70         GPIO31_AC97_SYNC,
  71
  72         /* IrDA */
  73         GPIO49_GPIO,    /* ir disable */
  74         GPIO46_FICP_RXD,
  75         GPIO47_FICP_TXD,
  76
  77         /* PWM */
  78         GPIO16_PWM0_OUT,
  79
  80         /* USB */
  81         GPIO15_GPIO,    /* usb detect */
  82         GPIO12_GPIO,    /* usb pullup */
  83         GPIO95_GPIO,    /* usb power */
  84
  85         /* Matrix keypad */
  86         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
  87         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
  88         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
  89         GPIO97_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
  90         GPIO103_KP_MKOUT_0,
  91         GPIO104_KP_MKOUT_1,
  92         GPIO105_KP_MKOUT_2,
  93
  94         /* LCD */
  95         GPIO58_LCD_LDD_0,
  96         GPIO59_LCD_LDD_1,
  97         GPIO60_LCD_LDD_2,
  98         GPIO61_LCD_LDD_3,
  99         GPIO62_LCD_LDD_4,
 100         GPIO63_LCD_LDD_5,
 101         GPIO64_LCD_LDD_6,
 102         GPIO65_LCD_LDD_7,
 103         GPIO66_LCD_LDD_8,
 104         GPIO67_LCD_LDD_9,
 105         GPIO68_LCD_LDD_10,
 106         GPIO69_LCD_LDD_11,
 107         GPIO70_LCD_LDD_12,
 108         GPIO71_LCD_LDD_13,
 109         GPIO72_LCD_LDD_14,
 110         GPIO73_LCD_LDD_15,
 111         GPIO74_LCD_FCLK,
 112         GPIO75_LCD_LCLK,
 113         GPIO76_LCD_PCLK,
 114         GPIO77_LCD_BIAS,
 115         GPIO20_GPIO,    /* bl power */
 116         GPIO21_GPIO,    /* LCD border switch */
 117         GPIO22_GPIO,    /* LCD border color */
 118         GPIO96_GPIO,    /* lcd power */
 119
 120         /* Misc. */
 121         GPIO0_GPIO      | WAKEUP_ON_LEVEL_HIGH, /* power detect */
 122         GPIO88_GPIO,                            /* green led */
 123         GPIO27_GPIO,                            /* WM9712 IRQ */
 124 };
 125
 126 /******************************************************************************
 127  * SD/MMC card controller
 128  ******************************************************************************/
 129 static int palmz72_mci_init(struct device *dev,
 130                                 irq_handler_t palmz72_detect_int, void *data)
 131 {
 132         int err = 0;
 133
 134         /* Setup an interrupt for detecting card insert/remove events */
 135         err = gpio_request(GPIO_NR_PALMZ72_SD_DETECT_N, "SD IRQ");
 136         if (err)
 137                 goto err;
 138         err = gpio_direction_input(GPIO_NR_PALMZ72_SD_DETECT_N);
 139         if (err)
 140                 goto err2;
 141         err = request_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N),
 142                         palmz72_detect_int, IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
 143                         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 144                         "SD/MMC card detect", data);
 145         if (err) {
 146                 printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
 147                                 __func__);
 148                 goto err2;
 149         }
 150
 151         /* SD_POWER is not actually power, but it is more like chip
 152          * select, i.e. it is inverted */
 153
 154         err = gpio_request(GPIO_NR_PALMZ72_SD_POWER_N, "SD_POWER");
 155         if (err)
 156                 goto err3;
 157         err = gpio_direction_output(GPIO_NR_PALMZ72_SD_POWER_N, 0);
 158         if (err)
 159                 goto err4;
 160         err = gpio_request(GPIO_NR_PALMZ72_SD_RO, "SD_RO");
 161         if (err)
 162                 goto err4;
 163         err = gpio_direction_input(GPIO_NR_PALMZ72_SD_RO);
 164         if (err)
 165                 goto err5;
 166
 167         printk(KERN_DEBUG "%s: irq registered\n", __func__);
 168
 169         return 0;
 170
 171 err5:
 172         gpio_free(GPIO_NR_PALMZ72_SD_RO);
 173 err4:
 174         gpio_free(GPIO_NR_PALMZ72_SD_POWER_N);
 175 err3:
 176         free_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N), data);
 177 err2:
 178         gpio_free(GPIO_NR_PALMZ72_SD_DETECT_N);
 179 err:
 180         return err;
 181 }
 182
 183 static void palmz72_mci_exit(struct device *dev, void *data)
 184 {
 185         gpio_free(GPIO_NR_PALMZ72_SD_POWER_N);
 186         free_irq(gpio_to_irq(GPIO_NR_PALMZ72_SD_DETECT_N), data);
 187         gpio_free(GPIO_NR_PALMZ72_SD_DETECT_N);
 188         gpio_free(GPIO_NR_PALMZ72_SD_RO);
 189 }
 190
 191 static void palmz72_mci_power(struct device *dev, unsigned int vdd)
 192 {
 193         struct pxamci_platform_data *p_d = dev->platform_data;
 194         if (p_d->ocr_mask & (1 << vdd))
 195                 gpio_set_value(GPIO_NR_PALMZ72_SD_POWER_N, 0);
 196         else
 197                 gpio_set_value(GPIO_NR_PALMZ72_SD_POWER_N, 1);
 198 }
 199
 200 static int palmz72_mci_ro(struct device *dev)
 201 {
 202         return gpio_get_value(GPIO_NR_PALMZ72_SD_RO);
 203 }
 204
 205 static struct pxamci_platform_data palmz72_mci_platform_data = {
 206         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 207         .setpower       = palmz72_mci_power,
 208         .get_ro         = palmz72_mci_ro,
 209         .init           = palmz72_mci_init,
 210         .exit           = palmz72_mci_exit,
 211 };
 212
 213 /******************************************************************************
 214  * GPIO keyboard
 215  ******************************************************************************/
 216 static unsigned int palmz72_matrix_keys[] = {
 217         KEY(0, 0, KEY_POWER),
 218         KEY(0, 1, KEY_F1),
 219         KEY(0, 2, KEY_ENTER),
 220
 221         KEY(1, 0, KEY_F2),
 222         KEY(1, 1, KEY_F3),
 223         KEY(1, 2, KEY_F4),
 224
 225         KEY(2, 0, KEY_UP),
 226         KEY(2, 2, KEY_DOWN),
 227
 228         KEY(3, 0, KEY_RIGHT),
 229         KEY(3, 2, KEY_LEFT),
 230 };
 231
 232 static struct pxa27x_keypad_platform_data palmz72_keypad_platform_data = {
 233         .matrix_key_rows        = 4,
 234         .matrix_key_cols        = 3,
 235         .matrix_key_map         = palmz72_matrix_keys,
 236         .matrix_key_map_size    = ARRAY_SIZE(palmz72_matrix_keys),
 237
 238         .debounce_interval      = 30,
 239 };
 240
 241 /******************************************************************************
 242  * Backlight
 243  ******************************************************************************/
 244 static int palmz72_backlight_init(struct device *dev)
 245 {
 246         int ret;
 247
 248         ret = gpio_request(GPIO_NR_PALMZ72_BL_POWER, "BL POWER");
 249         if (ret)
 250                 goto err;
 251         ret = gpio_direction_output(GPIO_NR_PALMZ72_BL_POWER, 0);
 252         if (ret)
 253                 goto err2;
 254         ret = gpio_request(GPIO_NR_PALMZ72_LCD_POWER, "LCD POWER");
 255         if (ret)
 256                 goto err2;
 257         ret = gpio_direction_output(GPIO_NR_PALMZ72_LCD_POWER, 0);
 258         if (ret)
 259                 goto err3;
 260
 261         return 0;
 262 err3:
 263         gpio_free(GPIO_NR_PALMZ72_LCD_POWER);
 264 err2:
 265         gpio_free(GPIO_NR_PALMZ72_BL_POWER);
 266 err:
 267         return ret;
 268 }
 269
 270 static int palmz72_backlight_notify(int brightness)
 271 {
 272         gpio_set_value(GPIO_NR_PALMZ72_BL_POWER, brightness);
 273         gpio_set_value(GPIO_NR_PALMZ72_LCD_POWER, brightness);
 274         return brightness;
 275 }
 276
 277 static void palmz72_backlight_exit(struct device *dev)
 278 {
 279         gpio_free(GPIO_NR_PALMZ72_BL_POWER);
 280         gpio_free(GPIO_NR_PALMZ72_LCD_POWER);
 281 }
 282
 283 static struct platform_pwm_backlight_data palmz72_backlight_data = {
 284         .pwm_id         = 0,
 285         .max_brightness = PALMZ72_MAX_INTENSITY,
 286         .dft_brightness = PALMZ72_MAX_INTENSITY,
 287         .pwm_period_ns  = PALMZ72_PERIOD_NS,
 288         .init           = palmz72_backlight_init,
 289         .notify         = palmz72_backlight_notify,
 290         .exit           = palmz72_backlight_exit,
 291 };
 292
 293 static struct platform_device palmz72_backlight = {
 294         .name   = "pwm-backlight",
 295         .dev    = {
 296                 .parent         = &pxa27x_device_pwm0.dev,
 297                 .platform_data  = &palmz72_backlight_data,
 298         },
 299 };
 300
 301 /******************************************************************************
 302  * IrDA
 303  ******************************************************************************/
 304 static int palmz72_irda_startup(struct device *dev)
 305 {
 306         int err;
 307         err = gpio_request(GPIO_NR_PALMZ72_IR_DISABLE, "IR DISABLE");
 308         if (err)
 309                 goto err;
 310         err = gpio_direction_output(GPIO_NR_PALMZ72_IR_DISABLE, 1);
 311         if (err)
 312                 gpio_free(GPIO_NR_PALMZ72_IR_DISABLE);
 313 err:
 314         return err;
 315 }
 316
 317 static void palmz72_irda_shutdown(struct device *dev)
 318 {
 319         gpio_free(GPIO_NR_PALMZ72_IR_DISABLE);
 320 }
 321
 322 static void palmz72_irda_transceiver_mode(struct device *dev, int mode)
 323 {
 324         gpio_set_value(GPIO_NR_PALMZ72_IR_DISABLE, mode & IR_OFF);
 325         pxa2xx_transceiver_mode(dev, mode);
 326 }
 327
 328 static struct pxaficp_platform_data palmz72_ficp_platform_data = {
 329         .startup                = palmz72_irda_startup,
 330         .shutdown               = palmz72_irda_shutdown,
 331         .transceiver_cap        = IR_SIRMODE | IR_OFF,
 332         .transceiver_mode       = palmz72_irda_transceiver_mode,
 333 };
 334
 335 /******************************************************************************
 336  * LEDs
 337  ******************************************************************************/
 338 static struct gpio_led gpio_leds[] = {
 339         {
 340                 .name                   = "palmz72:green:led",
 341                 .default_trigger        = "none",
 342                 .gpio                   = GPIO_NR_PALMZ72_LED_GREEN,
 343         },
 344 };
 345
 346 static struct gpio_led_platform_data gpio_led_info = {
 347         .leds           = gpio_leds,
 348         .num_leds       = ARRAY_SIZE(gpio_leds),
 349 };
 350
 351 static struct platform_device palmz72_leds = {
 352         .name   = "leds-gpio",
 353         .id     = -1,
 354         .dev    = {
 355                 .platform_data  = &gpio_led_info,
 356         }
 357 };
 358
 359 /******************************************************************************
 360  * Power supply
 361  ******************************************************************************/
 362 static int power_supply_init(struct device *dev)
 363 {
 364         int ret;
 365
 366         ret = gpio_request(GPIO_NR_PALMZ72_POWER_DETECT, "CABLE_STATE_AC");
 367         if (ret)
 368                 goto err1;
 369         ret = gpio_direction_input(GPIO_NR_PALMZ72_POWER_DETECT);
 370         if (ret)
 371                 goto err2;
 372
 373         ret = gpio_request(GPIO_NR_PALMZ72_USB_DETECT_N, "CABLE_STATE_USB");
 374         if (ret)
 375                 goto err2;
 376         ret = gpio_direction_input(GPIO_NR_PALMZ72_USB_DETECT_N);
 377         if (ret)
 378                 goto err3;
 379
 380         return 0;
 381 err3:
 382         gpio_free(GPIO_NR_PALMZ72_USB_DETECT_N);
 383 err2:
 384         gpio_free(GPIO_NR_PALMZ72_POWER_DETECT);
 385 err1:
 386         return ret;
 387 }
 388
 389 static int palmz72_is_ac_online(void)
 390 {
 391         return gpio_get_value(GPIO_NR_PALMZ72_POWER_DETECT);
 392 }
 393
 394 static int palmz72_is_usb_online(void)
 395 {
 396         return !gpio_get_value(GPIO_NR_PALMZ72_USB_DETECT_N);
 397 }
 398
 399 static void power_supply_exit(struct device *dev)
 400 {
 401         gpio_free(GPIO_NR_PALMZ72_USB_DETECT_N);
 402         gpio_free(GPIO_NR_PALMZ72_POWER_DETECT);
 403 }
 404
 405 static char *palmz72_supplicants[] = {
 406         "main-battery",
 407 };
 408
 409 static struct pda_power_pdata power_supply_info = {
 410         .init            = power_supply_init,
 411         .is_ac_online    = palmz72_is_ac_online,
 412         .is_usb_online   = palmz72_is_usb_online,
 413         .exit            = power_supply_exit,
 414         .supplied_to     = palmz72_supplicants,
 415         .num_supplicants = ARRAY_SIZE(palmz72_supplicants),
 416 };
 417
 418 static struct platform_device power_supply = {
 419         .name = "pda-power",
 420         .id   = -1,
 421         .dev  = {
 422                 .platform_data = &power_supply_info,
 423         },
 424 };
 425
 426 /******************************************************************************
 427  * Framebuffer
 428  ******************************************************************************/
 429 static struct pxafb_mode_info palmz72_lcd_modes[] = {
 430 {
 431         .pixclock       = 115384,
 432         .xres           = 320,
 433         .yres           = 320,
 434         .bpp            = 16,
 435
 436         .left_margin    = 27,
 437         .right_margin   = 7,
 438         .upper_margin   = 7,
 439         .lower_margin   = 8,
 440
 441         .hsync_len      = 6,
 442         .vsync_len      = 1,
 443 },
 444 };
 445
 446 static struct pxafb_mach_info palmz72_lcd_screen = {
 447         .modes          = palmz72_lcd_modes,
 448         .num_modes      = ARRAY_SIZE(palmz72_lcd_modes),
 449         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 450 };
 451
 452 #ifdef CONFIG_PM
 453
 454 /* We have some black magic here
 455  * PalmOS ROM on recover expects special struct physical address
 456  * to be transferred via PSPR. Using this struct PalmOS restores
 457  * its state after sleep. As for Linux, we need to setup it the
 458  * same way. More than that, PalmOS ROM changes some values in memory.
 459  * For now only one location is found, which needs special treatment.
 460  * Thanks to Alex Osborne, Andrzej Zaborowski, and lots of other people
 461  * for reading backtraces for me :)
 462  */
 463
 464 #define PALMZ72_SAVE_DWORD ((unsigned long *)0xc0000050)
 465
 466 static struct palmz72_resume_info palmz72_resume_info = {
 467         .magic0 = 0xb4e6,
 468         .magic1 = 1,
 469
 470         /* reset state, MMU off etc */
 471         .arm_control = 0,
 472         .aux_control = 0,
 473         .ttb = 0,
 474         .domain_access = 0,
 475         .process_id = 0,
 476 };
 477
 478 static unsigned long store_ptr;
 479
 480 /* sys_device for Palm Zire 72 PM */
 481
 482 static int palmz72_pm_suspend(struct sys_device *dev, pm_message_t msg)
 483 {
 484         /* setup the resume_info struct for the original bootloader */
 485         palmz72_resume_info.resume_addr = (u32) pxa_cpu_resume;
 486
 487         /* Storing memory touched by ROM */
 488         store_ptr = *PALMZ72_SAVE_DWORD;
 489
 490         /* Setting PSPR to a proper value */
 491         PSPR = virt_to_phys(&palmz72_resume_info);
 492
 493         return 0;
 494 }
 495
 496 static int palmz72_pm_resume(struct sys_device *dev)
 497 {
 498         *PALMZ72_SAVE_DWORD = store_ptr;
 499         return 0;
 500 }
 501
 502 static struct sysdev_class palmz72_pm_sysclass = {
 503         .name = "palmz72_pm",
 504         .suspend = palmz72_pm_suspend,
 505         .resume = palmz72_pm_resume,
 506 };
 507
 508 static struct sys_device palmz72_pm_device = {
 509         .cls = &palmz72_pm_sysclass,
 510 };
 511
 512 static int __init palmz72_pm_init(void)
 513 {
 514         int ret = -ENODEV;
 515         if (machine_is_palmz72()) {
 516                 ret = sysdev_class_register(&palmz72_pm_sysclass);
 517                 if (ret == 0)
 518                         ret = sysdev_register(&palmz72_pm_device);
 519         }
 520         return ret;
 521 }
 522
 523 device_initcall(palmz72_pm_init);
 524 #endif
 525
 526 /******************************************************************************
 527  * Machine init
 528  ******************************************************************************/
 529 static struct platform_device *devices[] __initdata = {
 530         &palmz72_backlight,
 531         &palmz72_leds,
 532         &power_supply,
 533 };
 534
 535 static void __init palmz72_init(void)
 536 {
 537         pxa2xx_mfp_config(ARRAY_AND_SIZE(palmz72_pin_config));
 538         set_pxa_fb_info(&palmz72_lcd_screen);
 539         pxa_set_mci_info(&palmz72_mci_platform_data);
 540         pxa_set_ac97_info(NULL);
 541         pxa_set_ficp_info(&palmz72_ficp_platform_data);
 542         pxa_set_keypad_info(&palmz72_keypad_platform_data);
 543         platform_add_devices(devices, ARRAY_SIZE(devices));
 544 }
 545
 546 MACHINE_START(PALMZ72, "Palm Zire72")
 547         .phys_io        = 0x40000000,
 548         .io_pg_offst    = io_p2v(0x40000000),
 549         .boot_params    = 0xa0000100,
 550         .map_io         = pxa_map_io,
 551         .init_irq       = pxa27x_init_irq,
 552         .timer          = &pxa_timer,
 553         .init_machine   = palmz72_init
 554 MACHINE_END