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 #include <linux/io.h> 14 #include <linux/spinlock.h> 15 16 #include <asm/hardware/dec21285.h> 17 #include <asm/leds.h> 18 #include <asm/mach-types.h> 19 #include <asm/setup.h> 20 #include <asm/system_misc.h> 21 22 #include <asm/mach/arch.h> 23 24 #include "common.h" 25 26 #define IRDA_IO_BASE 0x180 27 #define GP1_IO_BASE 0x338 28 #define GP2_IO_BASE 0x33a 29 30 31 #ifdef CONFIG_LEDS 32 #define DEFAULT_LEDS 0 33 #else 34 #define DEFAULT_LEDS GPIO_GREEN_LED 35 #endif 36 37 /* 38 * Winbond WB83977F accessibility stuff 39 */ 40 static inline void wb977_open(void) 41 { 42 outb(0x87, 0x370); 43 outb(0x87, 0x370); 44 } 45 46 static inline void wb977_close(void) 47 { 48 outb(0xaa, 0x370); 49 } 50 51 static inline void wb977_wb(int reg, int val) 52 { 53 outb(reg, 0x370); 54 outb(val, 0x371); 55 } 56 57 static inline void wb977_ww(int reg, int val) 58 { 59 outb(reg, 0x370); 60 outb(val >> 8, 0x371); 61 outb(reg + 1, 0x370); 62 outb(val & 255, 0x371); 63 } 64 65 #define wb977_device_select(dev) wb977_wb(0x07, dev) 66 #define wb977_device_disable() wb977_wb(0x30, 0x00) 67 #define wb977_device_enable() wb977_wb(0x30, 0x01) 68 69 /* 70 * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE 71 */ 72 DEFINE_RAW_SPINLOCK(nw_gpio_lock); 73 EXPORT_SYMBOL(nw_gpio_lock); 74 75 static unsigned int current_gpio_op; 76 static unsigned int current_gpio_io; 77 static unsigned int current_cpld; 78 79 void nw_gpio_modify_op(unsigned int mask, unsigned int set) 80 { 81 unsigned int new_gpio, changed; 82 83 new_gpio = (current_gpio_op & ~mask) | set; 84 changed = new_gpio ^ current_gpio_op; 85 current_gpio_op = new_gpio; 86 87 if (changed & 0xff) 88 outb(new_gpio, GP1_IO_BASE); 89 if (changed & 0xff00) 90 outb(new_gpio >> 8, GP2_IO_BASE); 91 } 92 EXPORT_SYMBOL(nw_gpio_modify_op); 93 94 static inline void __gpio_modify_io(int mask, int in) 95 { 96 unsigned int new_gpio, changed; 97 int port; 98 99 new_gpio = (current_gpio_io & ~mask) | in; 100 changed = new_gpio ^ current_gpio_io; 101 current_gpio_io = new_gpio; 102 103 changed >>= 1; 104 new_gpio >>= 1; 105 106 wb977_device_select(7); 107 108 for (port = 0xe1; changed && port < 0xe8; changed >>= 1) { 109 wb977_wb(port, new_gpio & 1); 110 111 port += 1; 112 new_gpio >>= 1; 113 } 114 115 wb977_device_select(8); 116 117 for (port = 0xe8; changed && port < 0xec; changed >>= 1) { 118 wb977_wb(port, new_gpio & 1); 119 120 port += 1; 121 new_gpio >>= 1; 122 } 123 } 124 125 void nw_gpio_modify_io(unsigned int mask, unsigned int in) 126 { 127 /* Open up the SuperIO chip */ 128 wb977_open(); 129 130 __gpio_modify_io(mask, in); 131 132 /* Close up the EFER gate */ 133 wb977_close(); 134 } 135 EXPORT_SYMBOL(nw_gpio_modify_io); 136 137 unsigned int nw_gpio_read(void) 138 { 139 return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8; 140 } 141 EXPORT_SYMBOL(nw_gpio_read); 142 143 /* 144 * Initialise the Winbond W83977F global registers 145 */ 146 static inline void wb977_init_global(void) 147 { 148 /* 149 * Enable R/W config registers 150 */ 151 wb977_wb(0x26, 0x40); 152 153 /* 154 * Power down FDC (not used) 155 */ 156 wb977_wb(0x22, 0xfe); 157 158 /* 159 * GP12, GP11, CIRRX, IRRXH, GP10 160 */ 161 wb977_wb(0x2a, 0xc1); 162 163 /* 164 * GP23, GP22, GP21, GP20, GP13 165 */ 166 wb977_wb(0x2b, 0x6b); 167 168 /* 169 * GP17, GP16, GP15, GP14 170 */ 171 wb977_wb(0x2c, 0x55); 172 } 173 174 /* 175 * Initialise the Winbond W83977F printer port 176 */ 177 static inline void wb977_init_printer(void) 178 { 179 wb977_device_select(1); 180 181 /* 182 * mode 1 == EPP 183 */ 184 wb977_wb(0xf0, 0x01); 185 } 186 187 /* 188 * Initialise the Winbond W83977F keyboard controller 189 */ 190 static inline void wb977_init_keyboard(void) 191 { 192 wb977_device_select(5); 193 194 /* 195 * Keyboard controller address 196 */ 197 wb977_ww(0x60, 0x0060); 198 wb977_ww(0x62, 0x0064); 199 200 /* 201 * Keyboard IRQ 1, active high, edge trigger 202 */ 203 wb977_wb(0x70, 1); 204 wb977_wb(0x71, 0x02); 205 206 /* 207 * Mouse IRQ 5, active high, edge trigger 208 */ 209 wb977_wb(0x72, 5); 210 wb977_wb(0x73, 0x02); 211 212 /* 213 * KBC 8MHz 214 */ 215 wb977_wb(0xf0, 0x40); 216 217 /* 218 * Enable device 219 */ 220 wb977_device_enable(); 221 } 222 223 /* 224 * Initialise the Winbond W83977F Infra-Red device 225 */ 226 static inline void wb977_init_irda(void) 227 { 228 wb977_device_select(6); 229 230 /* 231 * IR base address 232 */ 233 wb977_ww(0x60, IRDA_IO_BASE); 234 235 /* 236 * IRDA IRQ 6, active high, edge trigger 237 */ 238 wb977_wb(0x70, 6); 239 wb977_wb(0x71, 0x02); 240 241 /* 242 * RX DMA - ISA DMA 0 243 */ 244 wb977_wb(0x74, 0x00); 245 246 /* 247 * TX DMA - Disable Tx DMA 248 */ 249 wb977_wb(0x75, 0x04); 250 251 /* 252 * Append CRC, Enable bank selection 253 */ 254 wb977_wb(0xf0, 0x03); 255 256 /* 257 * Enable device 258 */ 259 wb977_device_enable(); 260 } 261 262 /* 263 * Initialise Winbond W83977F general purpose IO 264 */ 265 static inline void wb977_init_gpio(void) 266 { 267 unsigned long flags; 268 269 /* 270 * Set up initial I/O definitions 271 */ 272 current_gpio_io = -1; 273 __gpio_modify_io(-1, GPIO_DONE | GPIO_WDTIMER); 274 275 wb977_device_select(7); 276 277 /* 278 * Group1 base address 279 */ 280 wb977_ww(0x60, GP1_IO_BASE); 281 wb977_ww(0x62, 0); 282 wb977_ww(0x64, 0); 283 284 /* 285 * GP10 (Orage button) IRQ 10, active high, edge trigger 286 */ 287 wb977_wb(0x70, 10); 288 wb977_wb(0x71, 0x02); 289 290 /* 291 * GP10: Debounce filter enabled, IRQ, input 292 */ 293 wb977_wb(0xe0, 0x19); 294 295 /* 296 * Enable Group1 297 */ 298 wb977_device_enable(); 299 300 wb977_device_select(8); 301 302 /* 303 * Group2 base address 304 */ 305 wb977_ww(0x60, GP2_IO_BASE); 306 307 /* 308 * Clear watchdog timer regs 309 * - timer disable 310 */ 311 wb977_wb(0xf2, 0x00); 312 313 /* 314 * - disable LED, no mouse nor keyboard IRQ 315 */ 316 wb977_wb(0xf3, 0x00); 317 318 /* 319 * - timer counting, disable power LED, disable timeouot 320 */ 321 wb977_wb(0xf4, 0x00); 322 323 /* 324 * Enable group2 325 */ 326 wb977_device_enable(); 327 328 /* 329 * Set Group1/Group2 outputs 330 */ 331 raw_spin_lock_irqsave(&nw_gpio_lock, flags); 332 nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN); 333 raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); 334 } 335 336 /* 337 * Initialise the Winbond W83977F chip. 338 */ 339 static void __init wb977_init(void) 340 { 341 request_region(0x370, 2, "W83977AF configuration"); 342 343 /* 344 * Open up the SuperIO chip 345 */ 346 wb977_open(); 347 348 /* 349 * Initialise the global registers 350 */ 351 wb977_init_global(); 352 353 /* 354 * Initialise the various devices in 355 * the multi-IO chip. 356 */ 357 wb977_init_printer(); 358 wb977_init_keyboard(); 359 wb977_init_irda(); 360 wb977_init_gpio(); 361 362 /* 363 * Close up the EFER gate 364 */ 365 wb977_close(); 366 } 367 368 void nw_cpld_modify(unsigned int mask, unsigned int set) 369 { 370 int msk; 371 372 current_cpld = (current_cpld & ~mask) | set; 373 374 nw_gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0); 375 nw_gpio_modify_op(GPIO_IOLOAD, 0); 376 377 for (msk = 8; msk; msk >>= 1) { 378 int bit = current_cpld & msk; 379 380 nw_gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0); 381 nw_gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK); 382 } 383 384 nw_gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0); 385 nw_gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK); 386 nw_gpio_modify_op(GPIO_IOLOAD, 0); 387 } 388 EXPORT_SYMBOL(nw_cpld_modify); 389 390 static void __init cpld_init(void) 391 { 392 unsigned long flags; 393 394 raw_spin_lock_irqsave(&nw_gpio_lock, flags); 395 nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE); 396 raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); 397 } 398 399 static unsigned char rwa_unlock[] __initdata = 400 { 0x00, 0x00, 0x6a, 0xb5, 0xda, 0xed, 0xf6, 0xfb, 0x7d, 0xbe, 0xdf, 0x6f, 0x37, 0x1b, 401 0x0d, 0x86, 0xc3, 0x61, 0xb0, 0x58, 0x2c, 0x16, 0x8b, 0x45, 0xa2, 0xd1, 0xe8, 0x74, 402 0x3a, 0x9d, 0xce, 0xe7, 0x73, 0x39 }; 403 404 #ifndef DEBUG 405 #define dprintk(x...) 406 #else 407 #define dprintk(x...) printk(x) 408 #endif 409 410 #define WRITE_RWA(r,v) do { outb((r), 0x279); udelay(10); outb((v), 0xa79); } while (0) 411 412 static inline void rwa010_unlock(void) 413 { 414 int i; 415 416 WRITE_RWA(2, 2); 417 mdelay(10); 418 419 for (i = 0; i < sizeof(rwa_unlock); i++) { 420 outb(rwa_unlock[i], 0x279); 421 udelay(10); 422 } 423 } 424 425 static inline void rwa010_read_ident(void) 426 { 427 unsigned char si[9]; 428 int i, j; 429 430 WRITE_RWA(3, 0); 431 WRITE_RWA(0, 128); 432 433 outb(1, 0x279); 434 435 mdelay(1); 436 437 dprintk("Identifier: "); 438 for (i = 0; i < 9; i++) { 439 si[i] = 0; 440 for (j = 0; j < 8; j++) { 441 int bit; 442 udelay(250); 443 inb(0x203); 444 udelay(250); 445 bit = inb(0x203); 446 dprintk("%02X ", bit); 447 bit = (bit == 0xaa) ? 1 : 0; 448 si[i] |= bit << j; 449 } 450 dprintk("(%02X) ", si[i]); 451 } 452 dprintk("\n"); 453 } 454 455 static inline void rwa010_global_init(void) 456 { 457 WRITE_RWA(6, 2); // Assign a card no = 2 458 459 dprintk("Card no = %d\n", inb(0x203)); 460 461 /* disable the modem section of the chip */ 462 WRITE_RWA(7, 3); 463 WRITE_RWA(0x30, 0); 464 465 /* disable the cdrom section of the chip */ 466 WRITE_RWA(7, 4); 467 WRITE_RWA(0x30, 0); 468 469 /* disable the MPU-401 section of the chip */ 470 WRITE_RWA(7, 2); 471 WRITE_RWA(0x30, 0); 472 } 473 474 static inline void rwa010_game_port_init(void) 475 { 476 int i; 477 478 WRITE_RWA(7, 5); 479 480 dprintk("Slider base: "); 481 WRITE_RWA(0x61, 1); 482 i = inb(0x203); 483 484 WRITE_RWA(0x60, 2); 485 dprintk("%02X%02X (201)\n", inb(0x203), i); 486 487 WRITE_RWA(0x30, 1); 488 } 489 490 static inline void rwa010_waveartist_init(int base, int irq, int dma) 491 { 492 int i; 493 494 WRITE_RWA(7, 0); 495 496 dprintk("WaveArtist base: "); 497 WRITE_RWA(0x61, base & 255); 498 i = inb(0x203); 499 500 WRITE_RWA(0x60, base >> 8); 501 dprintk("%02X%02X (%X),", inb(0x203), i, base); 502 503 WRITE_RWA(0x70, irq); 504 dprintk(" irq: %d (%d),", inb(0x203), irq); 505 506 WRITE_RWA(0x74, dma); 507 dprintk(" dma: %d (%d)\n", inb(0x203), dma); 508 509 WRITE_RWA(0x30, 1); 510 } 511 512 static inline void rwa010_soundblaster_init(int sb_base, int al_base, int irq, int dma) 513 { 514 int i; 515 516 WRITE_RWA(7, 1); 517 518 dprintk("SoundBlaster base: "); 519 WRITE_RWA(0x61, sb_base & 255); 520 i = inb(0x203); 521 522 WRITE_RWA(0x60, sb_base >> 8); 523 dprintk("%02X%02X (%X),", inb(0x203), i, sb_base); 524 525 dprintk(" irq: "); 526 WRITE_RWA(0x70, irq); 527 dprintk("%d (%d),", inb(0x203), irq); 528 529 dprintk(" 8-bit DMA: "); 530 WRITE_RWA(0x74, dma); 531 dprintk("%d (%d)\n", inb(0x203), dma); 532 533 dprintk("AdLib base: "); 534 WRITE_RWA(0x63, al_base & 255); 535 i = inb(0x203); 536 537 WRITE_RWA(0x62, al_base >> 8); 538 dprintk("%02X%02X (%X)\n", inb(0x203), i, al_base); 539 540 WRITE_RWA(0x30, 1); 541 } 542 543 static void rwa010_soundblaster_reset(void) 544 { 545 int i; 546 547 outb(1, 0x226); 548 udelay(3); 549 outb(0, 0x226); 550 551 for (i = 0; i < 5; i++) { 552 if (inb(0x22e) & 0x80) 553 break; 554 mdelay(1); 555 } 556 if (i == 5) 557 printk("SoundBlaster: DSP reset failed\n"); 558 559 dprintk("SoundBlaster DSP reset: %02X (AA)\n", inb(0x22a)); 560 561 for (i = 0; i < 5; i++) { 562 if ((inb(0x22c) & 0x80) == 0) 563 break; 564 mdelay(1); 565 } 566 567 if (i == 5) 568 printk("SoundBlaster: DSP not ready\n"); 569 else { 570 outb(0xe1, 0x22c); 571 572 dprintk("SoundBlaster DSP id: "); 573 i = inb(0x22a); 574 udelay(1); 575 i |= inb(0x22a) << 8; 576 dprintk("%04X\n", i); 577 578 for (i = 0; i < 5; i++) { 579 if ((inb(0x22c) & 0x80) == 0) 580 break; 581 mdelay(1); 582 } 583 584 if (i == 5) 585 printk("SoundBlaster: could not turn speaker off\n"); 586 587 outb(0xd3, 0x22c); 588 } 589 590 /* turn on OPL3 */ 591 outb(5, 0x38a); 592 outb(1, 0x38b); 593 } 594 595 static void __init rwa010_init(void) 596 { 597 rwa010_unlock(); 598 rwa010_read_ident(); 599 rwa010_global_init(); 600 rwa010_game_port_init(); 601 rwa010_waveartist_init(0x250, 3, 7); 602 rwa010_soundblaster_init(0x220, 0x388, 3, 1); 603 rwa010_soundblaster_reset(); 604 } 605 606 /* 607 * Initialise any other hardware after we've got the PCI bus 608 * initialised. We may need the PCI bus to talk to this other 609 * hardware. 610 */ 611 static int __init nw_hw_init(void) 612 { 613 if (machine_is_netwinder()) { 614 unsigned long flags; 615 616 wb977_init(); 617 cpld_init(); 618 rwa010_init(); 619 620 raw_spin_lock_irqsave(&nw_gpio_lock, flags); 621 nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS); 622 raw_spin_unlock_irqrestore(&nw_gpio_lock, flags); 623 } 624 return 0; 625 } 626 627 __initcall(nw_hw_init); 628 629 /* 630 * Older NeTTroms either do not provide a parameters 631 * page, or they don't supply correct information in 632 * the parameter page. 633 */ 634 static void __init 635 fixup_netwinder(struct tag *tags, 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 static void netwinder_restart(char mode, const char *cmd) 650 { 651 if (mode == 's') { 652 /* Jump into the ROM */ 653 soft_restart(0x41000000); 654 } else { 655 local_irq_disable(); 656 local_fiq_disable(); 657 658 /* open up the SuperIO chip */ 659 outb(0x87, 0x370); 660 outb(0x87, 0x370); 661 662 /* aux function group 1 (logical device 7) */ 663 outb(0x07, 0x370); 664 outb(0x07, 0x371); 665 666 /* set GP16 for WD-TIMER output */ 667 outb(0xe6, 0x370); 668 outb(0x00, 0x371); 669 670 /* set a RED LED and toggle WD_TIMER for rebooting */ 671 outb(0xc4, 0x338); 672 } 673 } 674 675 MACHINE_START(NETWINDER, "Rebel-NetWinder") 676 /* Maintainer: Russell King/Rebel.com */ 677 .atag_offset = 0x100, 678 .video_start = 0x000a0000, 679 .video_end = 0x000bffff, 680 .reserve_lp0 = 1, 681 .reserve_lp2 = 1, 682 .fixup = fixup_netwinder, 683 .map_io = footbridge_map_io, 684 .init_irq = footbridge_init_irq, 685 .timer = &isa_timer, 686 .restart = netwinder_restart, 687 MACHINE_END 688