arch/arm/mach-pxa/aximx5/aximx5_misc.c

   1 /*
   2  * Miscelaneous device handlers for Dell Axim X5.
   3  * Tracks cradle insertion/removal, provides the MediaQ
   4  * platform device, provides SIR support.
   5  *
   6  * Copyright © 2004 Andrew Zabolotny
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file COPYING in the main directory of this archive for
  10  * more details.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/ioport.h>
  16 #include <linux/device.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/irq.h>
  19 #include <linux/delay.h>
  20 #include <linux/dock-hotplug.h>
  21 #include <linux/platform_device.h>
  22 #include <asm/io.h>
  23 #include <asm/irq.h>
  24 #include <asm/setup.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware.h>
  29 #include <asm/arch/pxa-regs.h>
  30 #include <asm/arch/irqs.h>
  31 #include <asm/arch/aximx5-gpio.h>
  32
  33 #include "../drivers/soc/mq11xx.h"
  34 #include "../drivers/usb/gadget/mq11xx_udc.h"
  35
  36 #if defined CONFIG_DOCKING_HOTPLUG || \
  37         (defined CONFIG_AXIMX5_MISC_MODULE && defined CONFIG_DOCKING_HOTPLUG_MODULE)
  38 #  define DOCKING_HOTPLUG
  39 #endif
  40
  41 #if 0
  42 #  define debug(s, args...) printk (KERN_INFO s, ##args)
  43 #else
  44 #  define debug(s, args...)
  45 #endif
  46 #define debug_func(s, args...) debug ("%s: " s, __FUNCTION__, ##args)
  47
  48 #define MQ_BASE 0x14000000
  49
  50 extern int driver_pxa_ac97_wm97xx;
  51
  52 /* MediaQ 1132 init state */
  53 static struct mediaq11xx_init_data aximx5_mq1132_init_data = {
  54         /* DC */
  55         {
  56                 /* dc00 */              0x00000001,
  57                 /* dc01 */              0x00000003,
  58                 /* dc02 */              0x00000001,
  59                 /* dc03 NOT SET */      0x0,
  60                 /* dc04 */              0x00000004,
  61                 /* dc05 */              0x00000001,
  62         },
  63         /* CC */
  64         {
  65                 /* cc00 */              0x00000000,
  66                 /* cc01 */              0x00001010,
  67                 /* cc02 */              0x000009a0,
  68                 /* cc03 */              0xa2202200,
  69                 /* cc04 */              0x00000004,
  70         },
  71         /* MIU */
  72         {
  73                 /* mm00 */              0x00000001,
  74                 /* mm01 */              0x1b676ca8,
  75                 /* mm02 */              0x00000000,
  76                 /* mm03 */              0x00000000,
  77                 /* mm04 */              0x00000000,
  78         },
  79         /* GC */
  80         {
  81                 /* gc00 */              0x080100c8, /* powered down */
  82                 /* gc01 */              0x00000000,
  83                 /* gc02 */              0x00f0011a,
  84                 /* gc03 */              0x013f015e,
  85                 /* gc04 */              0x011100fa,
  86                 /* gc05 */              0x01590157,
  87                 /* gc06 */              0x00000000,
  88                 /* gc07 NOT SET */      0x0,
  89                 /* gc08 */              0x00ef0000,
  90                 /* gc09 */              0x013f0000,
  91                 /* gc0a */              0x00000000,
  92                 /* gc0b */              0x011700f2,
  93                 /* gc0c */              0x00000000,
  94                 /* gc0d */              0x000091a6,
  95                 /* gc0e */              0x000001e0,
  96                 /* gc0f NOT SET */      0x0,
  97                 /* gc10 */              0x031f071f,
  98                 /* gc11 */              0x000000ff,
  99                 /* gc12 NOT SET */      0x0,
 100                 /* gc13 NOT SET */      0x0,
 101                 /* gc14 */              0x00000000,
 102                 /* gc15 */              0x00000000,
 103                 /* gc16 */              0x00000000,
 104                 /* gc17 */              0x00000000,
 105                 /* gc18 */              0x00000000,
 106                 /* gc19 */              0x00000000,
 107                 /* gc1a */              0x00000000,
 108         },
 109         /* FP */
 110         {
 111                 /* fp00 */              0x00406120,
 112                 /* fp01 */              0x001d5008,
 113                 /* fp02 */              0xbffcfcff,
 114                 /* fp03 */              0x00000000,
 115                 /* fp04 */              0x80bd0001,
 116                 /* fp05 */              0x89000000,
 117                 /* fp06 */              0x80000000,
 118                 /* fp07 */              0x00000000,
 119                 /* fp08 */              0x3afe46fb,
 120                 /* fp09 NOT SET */      0x0,
 121                 /* fp0a */              0x00000000,
 122                 /* fp0b */              0x00000000,
 123                 /* fp0c NOT SET */      0x0,
 124                 /* fp0d NOT SET */      0x0,
 125                 /* fp0e NOT SET */      0x0,
 126                 /* fp0f */              0x00005ca0,
 127                 /* fp10 */              0x513fc706,
 128                 /* fp11 */              0x18f8b182,
 129                 /* fp12 */              0xff8d6644,
 130                 /* fp13 */              0xae133357,
 131                 /* fp14 */              0x2b90bee1,
 132                 /* fp15 */              0xa6fee27a,
 133                 /* fp16 */              0x5aa04ee2,
 134                 /* fp17 */              0xb4e957f8,
 135                 /* fp18 */              0xd2fe9cfb,
 136                 /* fp19 */              0x94ff70fb,
 137                 /* fp1a */              0x7bfe5efb,
 138                 /* fp1b */              0x3ab676ad,
 139                 /* fp1c */              0x32e2ec5c,
 140                 /* fp1d */              0xc1309546,
 141                 /* fp1e */              0xf6933d7a,
 142                 /* fp1f */              0x02bfa020,
 143                 /* fp20 */              0x0,
 144                 /* fp21 */              0x0,
 145                 /* fp22 */              0x0,
 146                 /* fp23 */              0x0,
 147                 /* fp24 */              0x0,
 148                 /* fp25 */              0x0,
 149                 /* fp26 */              0x0,
 150                 /* fp27 */              0x0,
 151                 /* fp28 */              0x0,
 152                 /* fp29 */              0x0,
 153                 /* fp2a */              0x0,
 154                 /* fp2b */              0x0,
 155                 /* fp2c */              0x0,
 156                 /* fp2d */              0x0,
 157                 /* fp2e */              0x0,
 158                 /* fp2f */              0x0,
 159                 /* fp30 */              0xc3089f9a,
 160                 /* fp31 */              0x4488419f,
 161                 /* fp32 */              0x4131a146,
 162                 /* fp33 */              0xdbc01ccd,
 163                 /* fp34 */              0x7649f9d6,
 164                 /* fp35 */              0xa0122146,
 165                 /* fp36 */              0x1c2ed6e7,
 166                 /* fp37 */              0x182d52e9,
 167                 /* fp38 */              0xb3d06f09,
 168                 /* fp39 */              0x663a5cf4,
 169                 /* fp3a */              0x54fb278b,
 170                 /* fp3b */              0x07181a1b,
 171                 /* fp3c */              0x4d201fdd,
 172                 /* fp3d */              0x082459ef,
 173                 /* fp3e */              0xe044b973,
 174                 /* fp3f */              0x749c7102,
 175                 /* fp40 */              0x0,
 176                 /* fp41 */              0x0,
 177                 /* fp42 */              0x0,
 178                 /* fp43 */              0x0,
 179                 /* fp44 */              0x0,
 180                 /* fp45 */              0x0,
 181                 /* fp46 */              0x0,
 182                 /* fp47 */              0x0,
 183                 /* fp48 */              0x0,
 184                 /* fp49 */              0x0,
 185                 /* fp4a */              0x0,
 186                 /* fp4b */              0x0,
 187                 /* fp4c */              0x0,
 188                 /* fp4d */              0x0,
 189                 /* fp4e */              0x0,
 190                 /* fp4f */              0x0,
 191                 /* fp50 */              0x0,
 192                 /* fp51 */              0x0,
 193                 /* fp52 */              0x0,
 194                 /* fp53 */              0x0,
 195                 /* fp54 */              0x0,
 196                 /* fp55 */              0x0,
 197                 /* fp56 */              0x0,
 198                 /* fp57 */              0x0,
 199                 /* fp58 */              0x0,
 200                 /* fp59 */              0x0,
 201                 /* fp5a */              0x0,
 202                 /* fp5b */              0x0,
 203                 /* fp5c */              0x0,
 204                 /* fp5d */              0x0,
 205                 /* fp5e */              0x0,
 206                 /* fp5f */              0x0,
 207                 /* fp60 */              0x0,
 208                 /* fp61 */              0x0,
 209                 /* fp62 */              0x0,
 210                 /* fp63 */              0x0,
 211                 /* fp64 */              0x0,
 212                 /* fp65 */              0x0,
 213                 /* fp66 */              0x0,
 214                 /* fp67 */              0x0,
 215                 /* fp68 */              0x0,
 216                 /* fp69 */              0x0,
 217                 /* fp6a */              0x0,
 218                 /* fp6b */              0x0,
 219                 /* fp6c */              0x0,
 220                 /* fp6d */              0x0,
 221                 /* fp6e */              0x0,
 222                 /* fp6f */              0x0,
 223                 /* fp70 */              0x6e0812af,
 224                 /* fp71 */              0x4116e7b4,
 225                 /* fp72 */              0x7714bcdb,
 226                 /* fp73 */              0x0,
 227                 /* fp74 */              0x0,
 228                 /* fp75 */              0x0,
 229                 /* fp76 */              0x9bb93ec3,
 230                 /* fp77 */              0xb2021123,
 231         },
 232         /* GE */
 233         {
 234                 /* ge00 NOT SET */      0x0,
 235                 /* ge01 NOT SET */      0x0,
 236                 /* ge02 NOT SET */      0x0,
 237                 /* ge03 NOT SET */      0x0,
 238                 /* ge04 NOT SET */      0x0,
 239                 /* ge05 NOT SET */      0x0,
 240                 /* ge06 NOT SET */      0x0,
 241                 /* ge07 NOT SET */      0x0,
 242                 /* ge08 NOT SET */      0x0,
 243                 /* ge09 NOT SET */      0x0,
 244                 /* ge0a */              0x400001e0,
 245                 /* ge0b */              0x00000000,
 246         },
 247         /* SPI */
 248         {
 249                 /* sp00 */              0x40481189,
 250                 /* sp01 */              0,
 251                 /* sp02 NOT SET */      0,
 252                 /* sp03 NOT SET */      0,
 253                 /* sp04 */              0x004ef9ff,
 254                 /* sp05 NOT SET */      0,
 255                 /* sp06 NOT SET */      0,
 256                 /* sp07 */              0xfffffff0,
 257                 /* sp08 */              0x002ffc7d,
 258         },
 259 };
 260
 261 static struct resource mq1132_resources[] = {
 262         /* Synchronous memory */
 263         [0] = {
 264                 .start  = MQ_BASE,
 265                 .end    = MQ_BASE + MQ11xx_FB_SIZE - 1,
 266                 .flags  = IORESOURCE_MEM,
 267         },
 268         /* Non-synchronous memory */
 269         [1] = {
 270                 .start  = MQ_BASE + MQ11xx_FB_SIZE + MQ11xx_REG_SIZE,
 271                 .end    = MQ_BASE + MQ11xx_FB_SIZE * 2 - 1,
 272                 .flags  = IORESOURCE_MEM,
 273         },
 274         /* MediaQ registers */
 275         [2] = {
 276                 .start  = MQ_BASE + MQ11xx_FB_SIZE,
 277                 .end    = MQ_BASE + MQ11xx_FB_SIZE + MQ11xx_REG_SIZE - 1,
 278                 .flags  = IORESOURCE_MEM,
 279         },
 280         /* MediaQ interrupt number */
 281         [3] = {
 282                 .start  = AXIMX5_IRQ (MQ1132_INT),
 283                 .flags  = IORESOURCE_IRQ,
 284         }
 285 };
 286
 287 struct platform_device aximx5_mq1132 = {
 288         .name           = "mq11xx",
 289         .id             = 0,
 290         .num_resources  = ARRAY_SIZE(mq1132_resources),
 291         .resource       = mq1132_resources,
 292         .dev            = {
 293                 .platform_data = &aximx5_mq1132_init_data,
 294         }
 295 };
 296
 297 //-----------------------------------------------// Battery latch IRQ //-----//
 298
 299 static irqreturn_t aximx5_battery_latch (int irq, void *dev_id, struct pt_regs *regs)
 300 {
 301         /* todo: go to sleep immediately or something like that */
 302         return IRQ_HANDLED;
 303 };
 304
 305 static void aximx5_init_latch (void)
 306 {
 307         request_irq (AXIMX5_IRQ (BATTERY_LATCH), &aximx5_battery_latch,
 308                      0, "Battery latch", NULL);
 309         set_irq_type (AXIMX5_IRQ (BATTERY_LATCH), IRQT_BOTHEDGE);
 310 }
 311
 312 //-------------------------------------------// USB Device Controller //-----//
 313
 314 int aximx5_udc_is_connected (void)
 315 {
 316         return !GET_AXIMX5_GPIO (CRADLE_DETECT_N);
 317 }
 318
 319 void aximx5_udc_command (int cmd)
 320 {
 321         switch (cmd) {
 322         case MQ11XX_UDC_CMD_DISCONNECT:
 323                 SET_AXIMX5_GPIO_N (USB_PULL_UP, 0);
 324                 break;
 325         case MQ11XX_UDC_CMD_CONNECT:
 326                 SET_AXIMX5_GPIO_N (USB_PULL_UP, 1);
 327                 break;
 328         }
 329 }
 330
 331 void aximx5_udc_release (struct device *dev)
 332 {
 333         (void)dev;
 334 }
 335
 336 static struct mq11xx_udc_mach_info aximx5_udc_info = {
 337         .udc_is_connected = &aximx5_udc_is_connected,
 338         .udc_command    = &aximx5_udc_command,
 339 };
 340
 341 static struct platform_device aximx5_udc = {
 342         .name           = "mq11xx_udc",
 343         .dev            = {
 344                 .platform_data  = &aximx5_udc_info,
 345                 .release        = aximx5_udc_release
 346         }
 347 };
 348
 349 //----------------------------------------// Cradle insertion/removal //-----//
 350
 351 #ifdef DOCKING_HOTPLUG
 352
 353 static wait_queue_head_t cradle_event;
 354 static volatile int cradle_event_count;
 355
 356 static struct dock_hotplug_caps_t dockcaps = {
 357         UNKNOWN_DOCKING_IDENTIFIER,
 358         0,
 359         DOCKCAPS_HOT
 360 };
 361
 362 static irqreturn_t aximx5_cradle (int irq, void *dev_id, struct pt_regs *regs)
 363 {
 364         cradle_event_count++;
 365         wake_up_interruptible (&cradle_event);
 366         return IRQ_HANDLED;
 367 };
 368
 369 static int check_cradle (void)
 370 {
 371         static int old_type = -1;
 372         int type = AXIMX5_CONNECTOR_TYPE;
 373
 374         if (GET_AXIMX5_GPIO (CRADLE_DETECT_N))
 375                 type = -1;
 376
 377         if (type == old_type)
 378                 return 0;
 379
 380         /* If we're going in a dock, find out its type */
 381         if (type != 7 && type != -1) {
 382                 dockcaps.flavour = AXIMX5_CONNECTOR_IS_CRADLE (type) ?
 383                         DOCKFLAV_CRADLE : DOCKFLAV_CABLE;
 384                 dockcaps.capabilities &= ~(DOCKCAPS_UDC | DOCKCAPS_RS232);
 385         }
 386
 387         if (AXIMX5_CONNECTOR_IS_SERIAL (type))
 388                 dockcaps.capabilities |= DOCKCAPS_RS232;
 389         else if (AXIMX5_CONNECTOR_IS_USB (type))
 390                 dockcaps.capabilities |= DOCKCAPS_UDC;
 391         else {
 392                 /* If we get a cradle code out of range ... */
 393                 if (type >= 0 && type < 7)
 394                         printk (KERN_INFO "Unknown connector=%d: "
 395                                 "please mail this to anpaza@mail.ru\n", type);
 396                 if (old_type == -1)
 397                         return 0;
 398                 type = -1;
 399         }
 400         old_type = type;
 401
 402         /* Setup RS-232 transceiver power */
 403         SET_AXIMX5_GPIO (RS232_DCD, dockcaps.capabilities & DOCKCAPS_RS232);
 404
 405         return dock_hotplug_event(type != -1, &dockcaps);
 406 }
 407
 408 /* This thread handles cradle insertion/removal */
 409 static int cradle_thread (void *arg)
 410 {
 411         int old_count;
 412
 413         /* set up thread context */
 414         daemonize ("kcradle");
 415         /* This thread is low priority */
 416         set_user_nice (current, 5);
 417         /* At startup check if we're in cradle */
 418         goto again;
 419
 420         for (;;) {
 421                 wait_event_interruptible (cradle_event, old_count != cradle_event_count);
 422
 423                 /* Wait for a steady contact */
 424 again:          do {
 425                         old_count = cradle_event_count;
 426                         set_task_state (current, TASK_INTERRUPTIBLE);
 427                         schedule_timeout(HZ/2);
 428                 } while (old_count != cradle_event_count);
 429
 430                 /* Now see what we have to do ... */
 431                 if (check_cradle () == EAGAIN)
 432                         goto again;
 433         }
 434 }
 435
 436 static void aximx5_init_cradle (void)
 437 {
 438         init_waitqueue_head (&cradle_event);
 439         kernel_thread (cradle_thread, NULL, 0);
 440         request_irq (AXIMX5_IRQ (CRADLE_DETECT_N), &aximx5_cradle,
 441                      0, "Cradle", NULL);
 442         set_irq_type (AXIMX5_IRQ (CRADLE_DETECT_N), IRQT_BOTHEDGE);
 443 }
 444
 445 #endif
 446
 447 static int __init aximx5_misc_init(void)
 448 {
 449         platform_device_register (&aximx5_mq1132);
 450         platform_device_register (&aximx5_udc);
 451 #ifdef DOCKING_HOTPLUG
 452         aximx5_init_cradle ();
 453 #endif
 454         aximx5_init_latch ();
 455         return 0;
 456 }
 457
 458 module_init (aximx5_misc_init);
 459 /* No module_exit function since this driver should be never unloaded */
 460
 461 MODULE_AUTHOR ("Andrew Zabolotny <zap@homelink.ru>");
 462 MODULE_DESCRIPTION ("Miscelaneous device support for Dell Axim X5");
 463 MODULE_LICENSE ("GPL");