arch/arm/mach-footbridge/netwinder-hw.c

   1 /*
   2  * linux/arch/arm/mach-footbridge/netwinder-hw.c
   3  *
   4  * Netwinder machine fixup
   5  *
   6  * Copyright (C) 1998, 1999 Russell King, Phil Blundell
   7  */
   8 #include <linux/module.h>
   9 #include <linux/ioport.h>
  10 #include <linux/kernel.h>
  11 #include <linux/delay.h>
  12 #include <linux/init.h>
  13
  14 #include <asm/hardware/dec21285.h>
  15 #include <asm/io.h>
  16 #include <asm/leds.h>
  17 #include <asm/mach-types.h>
  18 #include <asm/setup.h>
  19
  20 #include <asm/mach/arch.h>
  21
  22 #include "common.h"
  23
  24 #define IRDA_IO_BASE            0x180
  25 #define GP1_IO_BASE             0x338
  26 #define GP2_IO_BASE             0x33a
  27
  28
  29 #ifdef CONFIG_LEDS
  30 #define DEFAULT_LEDS    0
  31 #else
  32 #define DEFAULT_LEDS    GPIO_GREEN_LED
  33 #endif
  34
  35 /*
  36  * Winbond WB83977F accessibility stuff
  37  */
  38 static inline void wb977_open(void)
  39 {
  40         outb(0x87, 0x370);
  41         outb(0x87, 0x370);
  42 }
  43
  44 static inline void wb977_close(void)
  45 {
  46         outb(0xaa, 0x370);
  47 }
  48
  49 static inline void wb977_wb(int reg, int val)
  50 {
  51         outb(reg, 0x370);
  52         outb(val, 0x371);
  53 }
  54
  55 static inline void wb977_ww(int reg, int val)
  56 {
  57         outb(reg, 0x370);
  58         outb(val >> 8, 0x371);
  59         outb(reg + 1, 0x370);
  60         outb(val & 255, 0x371);
  61 }
  62
  63 #define wb977_device_select(dev)        wb977_wb(0x07, dev)
  64 #define wb977_device_disable()          wb977_wb(0x30, 0x00)
  65 #define wb977_device_enable()           wb977_wb(0x30, 0x01)
  66
  67 /*
  68  * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE
  69  */
  70 DEFINE_SPINLOCK(gpio_lock);
  71
  72 static unsigned int current_gpio_op;
  73 static unsigned int current_gpio_io;
  74 static unsigned int current_cpld;
  75
  76 void gpio_modify_op(int mask, int set)
  77 {
  78         unsigned int new_gpio, changed;
  79
  80         new_gpio = (current_gpio_op & ~mask) | set;
  81         changed = new_gpio ^ current_gpio_op;
  82         current_gpio_op = new_gpio;
  83
  84         if (changed & 0xff)
  85                 outb(new_gpio, GP1_IO_BASE);
  86         if (changed & 0xff00)
  87                 outb(new_gpio >> 8, GP2_IO_BASE);
  88 }
  89
  90 static inline void __gpio_modify_io(int mask, int in)
  91 {
  92         unsigned int new_gpio, changed;
  93         int port;
  94
  95         new_gpio = (current_gpio_io & ~mask) | in;
  96         changed = new_gpio ^ current_gpio_io;
  97         current_gpio_io = new_gpio;
  98
  99         changed >>= 1;
 100         new_gpio >>= 1;
 101
 102         wb977_device_select(7);
 103
 104         for (port = 0xe1; changed && port < 0xe8; changed >>= 1) {
 105                 wb977_wb(port, new_gpio & 1);
 106
 107                 port += 1;
 108                 new_gpio >>= 1;
 109         }
 110
 111         wb977_device_select(8);
 112
 113         for (port = 0xe8; changed && port < 0xec; changed >>= 1) {
 114                 wb977_wb(port, new_gpio & 1);
 115
 116                 port += 1;
 117                 new_gpio >>= 1;
 118         }
 119 }
 120
 121 void gpio_modify_io(int mask, int in)
 122 {
 123         /* Open up the SuperIO chip */
 124         wb977_open();
 125
 126         __gpio_modify_io(mask, in);
 127
 128         /* Close up the EFER gate */
 129         wb977_close();
 130 }
 131
 132 int gpio_read(void)
 133 {
 134         return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8;
 135 }
 136
 137 /*
 138  * Initialise the Winbond W83977F global registers
 139  */
 140 static inline void wb977_init_global(void)
 141 {
 142         /*
 143          * Enable R/W config registers
 144          */
 145         wb977_wb(0x26, 0x40);
 146
 147         /*
 148          * Power down FDC (not used)
 149          */
 150         wb977_wb(0x22, 0xfe);
 151
 152         /*
 153          * GP12, GP11, CIRRX, IRRXH, GP10
 154          */
 155         wb977_wb(0x2a, 0xc1);
 156
 157         /*
 158          * GP23, GP22, GP21, GP20, GP13
 159          */
 160         wb977_wb(0x2b, 0x6b);
 161
 162         /*
 163          * GP17, GP16, GP15, GP14
 164          */
 165         wb977_wb(0x2c, 0x55);
 166 }
 167
 168 /*
 169  * Initialise the Winbond W83977F printer port
 170  */
 171 static inline void wb977_init_printer(void)
 172 {
 173         wb977_device_select(1);
 174
 175         /*
 176          * mode 1 == EPP
 177          */
 178         wb977_wb(0xf0, 0x01);
 179 }
 180
 181 /*
 182  * Initialise the Winbond W83977F keyboard controller
 183  */
 184 static inline void wb977_init_keyboard(void)
 185 {
 186         wb977_device_select(5);
 187
 188         /*
 189          * Keyboard controller address
 190          */
 191         wb977_ww(0x60, 0x0060);
 192         wb977_ww(0x62, 0x0064);
 193
 194         /*
 195          * Keyboard IRQ 1, active high, edge trigger
 196          */
 197         wb977_wb(0x70, 1);
 198         wb977_wb(0x71, 0x02);
 199
 200         /*
 201          * Mouse IRQ 5, active high, edge trigger
 202          */
 203         wb977_wb(0x72, 5);
 204         wb977_wb(0x73, 0x02);
 205
 206         /*
 207          * KBC 8MHz
 208          */
 209         wb977_wb(0xf0, 0x40);
 210
 211         /*
 212          * Enable device
 213          */
 214         wb977_device_enable();
 215 }
 216
 217 /*
 218  * Initialise the Winbond W83977F Infra-Red device
 219  */
 220 static inline void wb977_init_irda(void)
 221 {
 222         wb977_device_select(6);
 223
 224         /*
 225          * IR base address
 226          */
 227         wb977_ww(0x60, IRDA_IO_BASE);
 228
 229         /*
 230          * IRDA IRQ 6, active high, edge trigger
 231          */
 232         wb977_wb(0x70, 6);
 233         wb977_wb(0x71, 0x02);
 234
 235         /*
 236          * RX DMA - ISA DMA 0
 237          */
 238         wb977_wb(0x74, 0x00);
 239
 240         /*
 241          * TX DMA - Disable Tx DMA
 242          */
 243         wb977_wb(0x75, 0x04);
 244
 245         /*
 246          * Append CRC, Enable bank selection
 247          */
 248         wb977_wb(0xf0, 0x03);
 249
 250         /*
 251          * Enable device
 252          */
 253         wb977_device_enable();
 254 }
 255
 256 /*
 257  * Initialise Winbond W83977F general purpose IO
 258  */
 259 static inline void wb977_init_gpio(void)
 260 {
 261         unsigned long flags;
 262
 263         /*
 264          * Set up initial I/O definitions
 265          */
 266         current_gpio_io = -1;
 267         __gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER);
 268
 269         wb977_device_select(7);
 270
 271         /*
 272          * Group1 base address
 273          */
 274         wb977_ww(0x60, GP1_IO_BASE);
 275         wb977_ww(0x62, 0);
 276         wb977_ww(0x64, 0);
 277
 278         /*
 279          * GP10 (Orage button) IRQ 10, active high, edge trigger
 280          */
 281         wb977_wb(0x70, 10);
 282         wb977_wb(0x71, 0x02);
 283
 284         /*
 285          * GP10: Debounce filter enabled, IRQ, input
 286          */
 287         wb977_wb(0xe0, 0x19);
 288
 289         /*
 290          * Enable Group1
 291          */
 292         wb977_device_enable();
 293
 294         wb977_device_select(8);
 295
 296         /*
 297          * Group2 base address
 298          */
 299         wb977_ww(0x60, GP2_IO_BASE);
 300
 301         /*
 302          * Clear watchdog timer regs
 303          *  - timer disable
 304          */
 305         wb977_wb(0xf2, 0x00);
 306
 307         /*
 308          *  - disable LED, no mouse nor keyboard IRQ
 309          */
 310         wb977_wb(0xf3, 0x00);
 311
 312         /*
 313          *  - timer counting, disable power LED, disable timeouot
 314          */
 315         wb977_wb(0xf4, 0x00);
 316
 317         /*
 318          * Enable group2
 319          */
 320         wb977_device_enable();
 321
 322         /*
 323          * Set Group1/Group2 outputs
 324          */
 325         spin_lock_irqsave(&gpio_lock, flags);
 326         gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN);
 327         spin_unlock_irqrestore(&gpio_lock, flags);
 328 }
 329
 330 /*
 331  * Initialise the Winbond W83977F chip.
 332  */
 333 static void __init wb977_init(void)
 334 {
 335         request_region(0x370, 2, "W83977AF configuration");
 336
 337         /*
 338          * Open up the SuperIO chip
 339          */
 340         wb977_open();
 341
 342         /*
 343          * Initialise the global registers
 344          */
 345         wb977_init_global();
 346
 347         /*
 348          * Initialise the various devices in
 349          * the multi-IO chip.
 350          */
 351         wb977_init_printer();
 352         wb977_init_keyboard();
 353         wb977_init_irda();
 354         wb977_init_gpio();
 355
 356         /*
 357          * Close up the EFER gate
 358          */
 359         wb977_close();
 360 }
 361
 362 void cpld_modify(int mask, int set)
 363 {
 364         int msk;
 365
 366         current_cpld = (current_cpld & ~mask) | set;
 367
 368         gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0);
 369         gpio_modify_op(GPIO_IOLOAD, 0);
 370
 371         for (msk = 8; msk; msk >>= 1) {
 372                 int bit = current_cpld & msk;
 373
 374                 gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0);
 375                 gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK);
 376         }
 377
 378         gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0);
 379         gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK);
 380         gpio_modify_op(GPIO_IOLOAD, 0);
 381 }
 382
 383 static void __init cpld_init(void)
 384 {
 385         unsigned long flags;
 386
 387         spin_lock_irqsave(&gpio_lock, flags);
 388         cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE);
 389         spin_unlock_irqrestore(&gpio_lock, flags);
 390 }
 391
 392 static unsigned char rwa_unlock[] __initdata =
 393 { 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b,
 394   0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74,
 395   0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 };
 396
 397 #ifndef DEBUG
 398 #define dprintk(x...)
 399 #else
 400 #define dprintk(x...) printk(x)
 401 #endif
 402
 403 #define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0)
 404
 405 static inline void rwa010_unlock(void)
 406 {
 407         int i;
 408
 409         WRITE_RWA(2, 2);
 410         mdelay(10);
 411
 412         for (i = 0; i < sizeof(rwa_unlock); i++) {
 413                 outb(rwa_unlock[i], 0x279);
 414                 udelay(10);
 415         }
 416 }
 417
 418 static inline void rwa010_read_ident(void)
 419 {
 420         unsigned char si[9];
 421         int i, j;
 422
 423         WRITE_RWA(3, 0);
 424         WRITE_RWA(0, 128);
 425
 426         outb(1, 0x279);
 427
 428         mdelay(1);
 429
 430         dprintk("Identifier: ");
 431         for (i = 0; i < 9; i++) {
 432                 si[i] = 0;
 433                 for (j = 0; j < 8; j++) {
 434                         int bit;
 435                         udelay(250);
 436                         inb(0x203);
 437                         udelay(250);
 438                         bit = inb(0x203);
 439                         dprintk("%02X ", bit);
 440                         bit = (bit == 0xaa) ? 1 : 0;
 441                         si[i] |= bit << j;
 442                 }
 443                 dprintk("(%02X) ", si[i]);
 444         }
 445         dprintk("\n");
 446 }
 447
 448 static inline void rwa010_global_init(void)
 449 {
 450         WRITE_RWA(6, 2);        // Assign a card no = 2
 451
 452         dprintk("Card no = %d\n", inb(0x203));
 453
 454         /* disable the modem section of the chip */
 455         WRITE_RWA(7, 3);
 456         WRITE_RWA(0x30, 0);
 457
 458         /* disable the cdrom section of the chip */
 459         WRITE_RWA(7, 4);
 460         WRITE_RWA(0x30, 0);
 461
 462         /* disable the MPU-401 section of the chip */
 463         WRITE_RWA(7, 2);
 464         WRITE_RWA(0x30, 0);
 465 }
 466
 467 static inline void rwa010_game_port_init(void)
 468 {
 469         int i;
 470
 471         WRITE_RWA(7, 5);
 472
 473         dprintk("Slider base: ");
 474         WRITE_RWA(0x61, 1);
 475         i = inb(0x203);
 476
 477         WRITE_RWA(0x60, 2);
 478         dprintk("%02X%02X (201)\n", inb(0x203), i);
 479
 480         WRITE_RWA(0x30, 1);
 481 }
 482
 483 static inline void rwa010_waveartist_init(int base, int irq, int dma)
 484 {
 485         int i;
 486
 487         WRITE_RWA(7, 0);
 488
 489         dprintk("WaveArtist base: ");
 490         WRITE_RWA(0x61, base & 255);
 491         i = inb(0x203);
 492
 493         WRITE_RWA(0x60, base >> 8);
 494         dprintk("%02X%02X (%X),", inb(0x203), i, base);
 495
 496         WRITE_RWA(0x70, irq);
 497         dprintk(" irq: %d (%d),", inb(0x203), irq);
 498
 499         WRITE_RWA(0x74, dma);
 500         dprintk(" dma: %d (%d)\n", inb(0x203), dma);
 501
 502         WRITE_RWA(0x30, 1);
 503 }
 504
 505 static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma)
 506 {
 507         int i;
 508
 509         WRITE_RWA(7, 1);
 510
 511         dprintk("SoundBlaster base: ");
 512         WRITE_RWA(0x61, sb_base & 255);
 513         i = inb(0x203);
 514
 515         WRITE_RWA(0x60, sb_base >> 8);
 516         dprintk("%02X%02X (%X),", inb(0x203), i, sb_base);
 517
 518         dprintk(" irq: ");
 519         WRITE_RWA(0x70, irq);
 520         dprintk("%d (%d),", inb(0x203), irq);
 521
 522         dprintk(" 8-bit DMA: ");
 523         WRITE_RWA(0x74, dma);
 524         dprintk("%d (%d)\n", inb(0x203), dma);
 525
 526         dprintk("AdLib base: ");
 527         WRITE_RWA(0x63, al_base & 255);
 528         i = inb(0x203);
 529
 530         WRITE_RWA(0x62, al_base >> 8);
 531         dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base);
 532
 533         WRITE_RWA(0x30, 1);
 534 }
 535
 536 static void rwa010_soundblaster_reset(void)
 537 {
 538         int i;
 539
 540         outb(1, 0x226);
 541         udelay(3);
 542         outb(0, 0x226);
 543
 544         for (i = 0; i < 5; i++) {
 545                 if (inb(0x22e) & 0x80)
 546                         break;
 547                 mdelay(1);
 548         }
 549         if (i == 5)
 550                 printk("SoundBlaster: DSP reset failed\n");
 551
 552         dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a));
 553
 554         for (i = 0; i < 5; i++) {
 555                 if ((inb(0x22c) & 0x80) == 0)
 556                         break;
 557                 mdelay(1);
 558         }
 559
 560         if (i == 5)
 561                 printk("SoundBlaster: DSP not ready\n");
 562         else {
 563                 outb(0xe1, 0x22c);
 564
 565                 dprintk("SoundBlaster DSP id: ");
 566                 i = inb(0x22a);
 567                 udelay(1);
 568                 i |= inb(0x22a) << 8;
 569                 dprintk("%04X\n", i);
 570
 571                 for (i = 0; i < 5; i++) {
 572                         if ((inb(0x22c) & 0x80) == 0)
 573                                 break;
 574                         mdelay(1);
 575                 }
 576
 577                 if (i == 5)
 578                         printk("SoundBlaster: could not turn speaker off\n");
 579
 580                 outb(0xd3, 0x22c);
 581         }
 582
 583         /* turn on OPL3 */
 584         outb(5, 0x38a);
 585         outb(1, 0x38b);
 586 }
 587
 588 static void __init rwa010_init(void)
 589 {
 590         rwa010_unlock();
 591         rwa010_read_ident();
 592         rwa010_global_init();
 593         rwa010_game_port_init();
 594         rwa010_waveartist_init(0x250, 3, 7);
 595         rwa010_soundblaster_init(0x220, 0x388, 3, 1);
 596         rwa010_soundblaster_reset();
 597 }
 598
 599 EXPORT_SYMBOL(gpio_lock);
 600 EXPORT_SYMBOL(gpio_modify_op);
 601 EXPORT_SYMBOL(gpio_modify_io);
 602 EXPORT_SYMBOL(cpld_modify);
 603 EXPORT_SYMBOL(gpio_read);
 604
 605 /*
 606  * Initialise any other hardware after we've got the PCI bus
 607  * initialised.  We may need the PCI bus to talk to this other
 608  * hardware.
 609  */
 610 static int __init nw_hw_init(void)
 611 {
 612         if (machine_is_netwinder()) {
 613                 unsigned long flags;
 614
 615                 wb977_init();
 616                 cpld_init();
 617                 rwa010_init();
 618
 619                 spin_lock_irqsave(&gpio_lock, flags);
 620                 gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);
 621                 spin_unlock_irqrestore(&gpio_lock, flags);
 622         }
 623         return 0;
 624 }
 625
 626 __initcall(nw_hw_init);
 627
 628 /*
 629  * Older NeTTroms either do not provide a parameters
 630  * page, or they don't supply correct information in
 631  * the parameter page.
 632  */
 633 static void __init
 634 fixup_netwinder(struct machine_desc *desc, struct tag *tags,
 635                 char **cmdline, struct meminfo *mi)
 636 {
 637 #ifdef CONFIG_ISAPNP
 638         extern int isapnp_disable;
 639
 640         /*
 641          * We must not use the kernels ISAPnP code
 642          * on the NetWinder - it will reset the settings
 643          * for the WaveArtist chip and render it inoperable.
 644          */
 645         isapnp_disable = 1;
 646 #endif
 647 }
 648
 649 MACHINE_START(NETWINDER, "Rebel-NetWinder")
 650         /* Maintainer: Russell King/Rebel.com */
 651         .phys_io        = DC21285_ARMCSR_BASE,
 652         .io_pg_offst    = ((0xfe000000) >> 18) & 0xfffc,
 653         .boot_params    = 0x00000100,
 654         .video_start    = 0x000a0000,
 655         .video_end      = 0x000bffff,
 656         .reserve_lp0    = 1,
 657         .reserve_lp2    = 1,
 658         .fixup          = fixup_netwinder,
 659         .map_io         = footbridge_map_io,
 660         .init_irq       = footbridge_init_irq,
 661         .timer          = &isa_timer,
 662 MACHINE_END