1 /* 2 * Based on linux/arch/mips/txx9/rbtx4938/setup.c, 3 * and RBTX49xx patch from CELF patch archive. 4 * 5 * 2003-2005 (c) MontaVista Software, Inc. 6 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 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 10 * for more details. 11 */ 12 #include <linux/init.h> 13 #include <linux/kernel.h> 14 #include <linux/types.h> 15 #include <linux/interrupt.h> 16 #include <linux/string.h> 17 #include <linux/module.h> 18 #include <linux/clk.h> 19 #include <linux/err.h> 20 #include <linux/gpio.h> 21 #include <linux/platform_device.h> 22 #include <linux/serial_core.h> 23 #include <linux/mtd/physmap.h> 24 #include <linux/leds.h> 25 #include <linux/sysdev.h> 26 #include <asm/bootinfo.h> 27 #include <asm/time.h> 28 #include <asm/reboot.h> 29 #include <asm/r4kcache.h> 30 #include <asm/sections.h> 31 #include <asm/txx9/generic.h> 32 #include <asm/txx9/pci.h> 33 #include <asm/txx9tmr.h> 34 #include <asm/txx9/ndfmc.h> 35 #include <asm/txx9/dmac.h> 36 #ifdef CONFIG_CPU_TX49XX 37 #include <asm/txx9/tx4938.h> 38 #endif 39 40 /* EBUSC settings of TX4927, etc. */ 41 struct resource txx9_ce_res[8]; 42 static char txx9_ce_res_name[8][4]; /* "CEn" */ 43 44 /* pcode, internal register */ 45 unsigned int txx9_pcode; 46 char txx9_pcode_str[8]; 47 static struct resource txx9_reg_res = { 48 .name = txx9_pcode_str, 49 .flags = IORESOURCE_MEM, 50 }; 51 void __init 52 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) 53 { 54 int i; 55 56 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { 57 sprintf(txx9_ce_res_name[i], "CE%d", i); 58 txx9_ce_res[i].flags = IORESOURCE_MEM; 59 txx9_ce_res[i].name = txx9_ce_res_name[i]; 60 } 61 62 txx9_pcode = pcode; 63 sprintf(txx9_pcode_str, "TX%x", pcode); 64 if (base) { 65 txx9_reg_res.start = base & 0xfffffffffULL; 66 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); 67 request_resource(&iomem_resource, &txx9_reg_res); 68 } 69 } 70 71 /* clocks */ 72 unsigned int txx9_master_clock; 73 unsigned int txx9_cpu_clock; 74 unsigned int txx9_gbus_clock; 75 76 #ifdef CONFIG_CPU_TX39XX 77 /* don't enable by default - see errata */ 78 int txx9_ccfg_toeon __initdata; 79 #else 80 int txx9_ccfg_toeon __initdata = 1; 81 #endif 82 83 /* Minimum CLK support */ 84 85 struct clk *clk_get(struct device *dev, const char *id) 86 { 87 if (!strcmp(id, "spi-baseclk")) 88 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4); 89 if (!strcmp(id, "imbus_clk")) 90 return (struct clk *)((unsigned long)txx9_gbus_clock / 2); 91 return ERR_PTR(-ENOENT); 92 } 93 EXPORT_SYMBOL(clk_get); 94 95 int clk_enable(struct clk *clk) 96 { 97 return 0; 98 } 99 EXPORT_SYMBOL(clk_enable); 100 101 void clk_disable(struct clk *clk) 102 { 103 } 104 EXPORT_SYMBOL(clk_disable); 105 106 unsigned long clk_get_rate(struct clk *clk) 107 { 108 return (unsigned long)clk; 109 } 110 EXPORT_SYMBOL(clk_get_rate); 111 112 void clk_put(struct clk *clk) 113 { 114 } 115 EXPORT_SYMBOL(clk_put); 116 117 /* GPIO support */ 118 119 #ifdef CONFIG_GENERIC_GPIO 120 int gpio_to_irq(unsigned gpio) 121 { 122 return -EINVAL; 123 } 124 EXPORT_SYMBOL(gpio_to_irq); 125 126 int irq_to_gpio(unsigned irq) 127 { 128 return -EINVAL; 129 } 130 EXPORT_SYMBOL(irq_to_gpio); 131 #endif 132 133 #define BOARD_VEC(board) extern struct txx9_board_vec board; 134 #include <asm/txx9/boards.h> 135 #undef BOARD_VEC 136 137 struct txx9_board_vec *txx9_board_vec __initdata; 138 static char txx9_system_type[32]; 139 140 static struct txx9_board_vec *board_vecs[] __initdata = { 141 #define BOARD_VEC(board) &board, 142 #include <asm/txx9/boards.h> 143 #undef BOARD_VEC 144 }; 145 146 static struct txx9_board_vec *__init find_board_byname(const char *name) 147 { 148 int i; 149 150 /* search board_vecs table */ 151 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) { 152 if (strstr(board_vecs[i]->system, name)) 153 return board_vecs[i]; 154 } 155 return NULL; 156 } 157 158 static void __init prom_init_cmdline(void) 159 { 160 int argc; 161 int *argv32; 162 int i; /* Always ignore the "-c" at argv[0] */ 163 char builtin[CL_SIZE]; 164 165 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) { 166 /* 167 * argc is not a valid number, or argv32 is not a valid 168 * pointer 169 */ 170 argc = 0; 171 argv32 = NULL; 172 } else { 173 argc = (int)fw_arg0; 174 argv32 = (int *)fw_arg1; 175 } 176 177 /* ignore all built-in args if any f/w args given */ 178 /* 179 * But if built-in strings was started with '+', append them 180 * to command line args. If built-in was started with '-', 181 * ignore all f/w args. 182 */ 183 builtin[0] = '\0'; 184 if (arcs_cmdline[0] == '+') 185 strcpy(builtin, arcs_cmdline + 1); 186 else if (arcs_cmdline[0] == '-') { 187 strcpy(builtin, arcs_cmdline + 1); 188 argc = 0; 189 } else if (argc <= 1) 190 strcpy(builtin, arcs_cmdline); 191 arcs_cmdline[0] = '\0'; 192 193 for (i = 1; i < argc; i++) { 194 char *str = (char *)(long)argv32[i]; 195 if (i != 1) 196 strcat(arcs_cmdline, " "); 197 if (strchr(str, ' ')) { 198 strcat(arcs_cmdline, "\""); 199 strcat(arcs_cmdline, str); 200 strcat(arcs_cmdline, "\""); 201 } else 202 strcat(arcs_cmdline, str); 203 } 204 /* append saved builtin args */ 205 if (builtin[0]) { 206 if (arcs_cmdline[0]) 207 strcat(arcs_cmdline, " "); 208 strcat(arcs_cmdline, builtin); 209 } 210 } 211 212 static int txx9_ic_disable __initdata; 213 static int txx9_dc_disable __initdata; 214 215 #if defined(CONFIG_CPU_TX49XX) 216 /* flush all cache on very early stage (before 4k_cache_init) */ 217 static void __init early_flush_dcache(void) 218 { 219 unsigned int conf = read_c0_config(); 220 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6)); 221 unsigned int linesz = 32; 222 unsigned long addr, end; 223 224 end = INDEX_BASE + dc_size / 4; 225 /* 4way, waybit=0 */ 226 for (addr = INDEX_BASE; addr < end; addr += linesz) { 227 cache_op(Index_Writeback_Inv_D, addr | 0); 228 cache_op(Index_Writeback_Inv_D, addr | 1); 229 cache_op(Index_Writeback_Inv_D, addr | 2); 230 cache_op(Index_Writeback_Inv_D, addr | 3); 231 } 232 } 233 234 static void __init txx9_cache_fixup(void) 235 { 236 unsigned int conf; 237 238 conf = read_c0_config(); 239 /* flush and disable */ 240 if (txx9_ic_disable) { 241 conf |= TX49_CONF_IC; 242 write_c0_config(conf); 243 } 244 if (txx9_dc_disable) { 245 early_flush_dcache(); 246 conf |= TX49_CONF_DC; 247 write_c0_config(conf); 248 } 249 250 /* enable cache */ 251 conf = read_c0_config(); 252 if (!txx9_ic_disable) 253 conf &= ~TX49_CONF_IC; 254 if (!txx9_dc_disable) 255 conf &= ~TX49_CONF_DC; 256 write_c0_config(conf); 257 258 if (conf & TX49_CONF_IC) 259 pr_info("TX49XX I-Cache disabled.\n"); 260 if (conf & TX49_CONF_DC) 261 pr_info("TX49XX D-Cache disabled.\n"); 262 } 263 #elif defined(CONFIG_CPU_TX39XX) 264 /* flush all cache on very early stage (before tx39_cache_init) */ 265 static void __init early_flush_dcache(void) 266 { 267 unsigned int conf = read_c0_config(); 268 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >> 269 TX39_CONF_DCS_SHIFT)); 270 unsigned int linesz = 16; 271 unsigned long addr, end; 272 273 end = INDEX_BASE + dc_size / 2; 274 /* 2way, waybit=0 */ 275 for (addr = INDEX_BASE; addr < end; addr += linesz) { 276 cache_op(Index_Writeback_Inv_D, addr | 0); 277 cache_op(Index_Writeback_Inv_D, addr | 1); 278 } 279 } 280 281 static void __init txx9_cache_fixup(void) 282 { 283 unsigned int conf; 284 285 conf = read_c0_config(); 286 /* flush and disable */ 287 if (txx9_ic_disable) { 288 conf &= ~TX39_CONF_ICE; 289 write_c0_config(conf); 290 } 291 if (txx9_dc_disable) { 292 early_flush_dcache(); 293 conf &= ~TX39_CONF_DCE; 294 write_c0_config(conf); 295 } 296 297 /* enable cache */ 298 conf = read_c0_config(); 299 if (!txx9_ic_disable) 300 conf |= TX39_CONF_ICE; 301 if (!txx9_dc_disable) 302 conf |= TX39_CONF_DCE; 303 write_c0_config(conf); 304 305 if (!(conf & TX39_CONF_ICE)) 306 pr_info("TX39XX I-Cache disabled.\n"); 307 if (!(conf & TX39_CONF_DCE)) 308 pr_info("TX39XX D-Cache disabled.\n"); 309 } 310 #else 311 static inline void txx9_cache_fixup(void) 312 { 313 } 314 #endif 315 316 static void __init preprocess_cmdline(void) 317 { 318 char cmdline[CL_SIZE]; 319 char *s; 320 321 strcpy(cmdline, arcs_cmdline); 322 s = cmdline; 323 arcs_cmdline[0] = '\0'; 324 while (s && *s) { 325 char *str = strsep(&s, " "); 326 if (strncmp(str, "board=", 6) == 0) { 327 txx9_board_vec = find_board_byname(str + 6); 328 continue; 329 } else if (strncmp(str, "masterclk=", 10) == 0) { 330 unsigned long val; 331 if (strict_strtoul(str + 10, 10, &val) == 0) 332 txx9_master_clock = val; 333 continue; 334 } else if (strcmp(str, "icdisable") == 0) { 335 txx9_ic_disable = 1; 336 continue; 337 } else if (strcmp(str, "dcdisable") == 0) { 338 txx9_dc_disable = 1; 339 continue; 340 } else if (strcmp(str, "toeoff") == 0) { 341 txx9_ccfg_toeon = 0; 342 continue; 343 } else if (strcmp(str, "toeon") == 0) { 344 txx9_ccfg_toeon = 1; 345 continue; 346 } 347 if (arcs_cmdline[0]) 348 strcat(arcs_cmdline, " "); 349 strcat(arcs_cmdline, str); 350 } 351 352 txx9_cache_fixup(); 353 } 354 355 static void __init select_board(void) 356 { 357 const char *envstr; 358 359 /* first, determine by "board=" argument in preprocess_cmdline() */ 360 if (txx9_board_vec) 361 return; 362 /* next, determine by "board" envvar */ 363 envstr = prom_getenv("board"); 364 if (envstr) { 365 txx9_board_vec = find_board_byname(envstr); 366 if (txx9_board_vec) 367 return; 368 } 369 370 /* select "default" board */ 371 #ifdef CONFIG_CPU_TX39XX 372 txx9_board_vec = &jmr3927_vec; 373 #endif 374 #ifdef CONFIG_CPU_TX49XX 375 switch (TX4938_REV_PCODE()) { 376 #ifdef CONFIG_TOSHIBA_RBTX4927 377 case 0x4927: 378 txx9_board_vec = &rbtx4927_vec; 379 break; 380 case 0x4937: 381 txx9_board_vec = &rbtx4937_vec; 382 break; 383 #endif 384 #ifdef CONFIG_TOSHIBA_RBTX4938 385 case 0x4938: 386 txx9_board_vec = &rbtx4938_vec; 387 break; 388 #endif 389 #ifdef CONFIG_TOSHIBA_RBTX4939 390 case 0x4939: 391 txx9_board_vec = &rbtx4939_vec; 392 break; 393 #endif 394 } 395 #endif 396 } 397 398 void __init prom_init(void) 399 { 400 prom_init_cmdline(); 401 preprocess_cmdline(); 402 select_board(); 403 404 strcpy(txx9_system_type, txx9_board_vec->system); 405 406 txx9_board_vec->prom_init(); 407 } 408 409 void __init prom_free_prom_memory(void) 410 { 411 unsigned long saddr = PAGE_SIZE; 412 unsigned long eaddr = __pa_symbol(&_text); 413 414 if (saddr < eaddr) 415 free_init_pages("prom memory", saddr, eaddr); 416 } 417 418 const char *get_system_type(void) 419 { 420 return txx9_system_type; 421 } 422 423 char * __init prom_getcmdline(void) 424 { 425 return &(arcs_cmdline[0]); 426 } 427 428 const char *__init prom_getenv(const char *name) 429 { 430 const s32 *str; 431 432 if (fw_arg2 < CKSEG0) 433 return NULL; 434 435 str = (const s32 *)fw_arg2; 436 /* YAMON style ("name", "value" pairs) */ 437 while (str[0] && str[1]) { 438 if (!strcmp((const char *)(unsigned long)str[0], name)) 439 return (const char *)(unsigned long)str[1]; 440 str += 2; 441 } 442 return NULL; 443 } 444 445 static void __noreturn txx9_machine_halt(void) 446 { 447 local_irq_disable(); 448 clear_c0_status(ST0_IM); 449 while (1) { 450 if (cpu_wait) { 451 (*cpu_wait)(); 452 if (cpu_has_counter) { 453 /* 454 * Clear counter interrupt while it 455 * breaks WAIT instruction even if 456 * masked. 457 */ 458 write_c0_compare(0); 459 } 460 } 461 } 462 } 463 464 /* Watchdog support */ 465 void __init txx9_wdt_init(unsigned long base) 466 { 467 struct resource res = { 468 .start = base, 469 .end = base + 0x100 - 1, 470 .flags = IORESOURCE_MEM, 471 }; 472 platform_device_register_simple("txx9wdt", -1, &res, 1); 473 } 474 475 void txx9_wdt_now(unsigned long base) 476 { 477 struct txx9_tmr_reg __iomem *tmrptr = 478 ioremap(base, sizeof(struct txx9_tmr_reg)); 479 /* disable watch dog timer */ 480 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr); 481 __raw_writel(0, &tmrptr->tcr); 482 /* kick watchdog */ 483 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr); 484 __raw_writel(1, &tmrptr->cpra); /* immediate */ 485 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG, 486 &tmrptr->tcr); 487 } 488 489 /* SPI support */ 490 void __init txx9_spi_init(int busid, unsigned long base, int irq) 491 { 492 struct resource res[] = { 493 { 494 .start = base, 495 .end = base + 0x20 - 1, 496 .flags = IORESOURCE_MEM, 497 }, { 498 .start = irq, 499 .flags = IORESOURCE_IRQ, 500 }, 501 }; 502 platform_device_register_simple("spi_txx9", busid, 503 res, ARRAY_SIZE(res)); 504 } 505 506 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr) 507 { 508 struct platform_device *pdev = 509 platform_device_alloc("tc35815-mac", id); 510 if (!pdev || 511 platform_device_add_data(pdev, ethaddr, 6) || 512 platform_device_add(pdev)) 513 platform_device_put(pdev); 514 } 515 516 void __init txx9_sio_init(unsigned long baseaddr, int irq, 517 unsigned int line, unsigned int sclk, int nocts) 518 { 519 #ifdef CONFIG_SERIAL_TXX9 520 struct uart_port req; 521 522 memset(&req, 0, sizeof(req)); 523 req.line = line; 524 req.iotype = UPIO_MEM; 525 req.membase = ioremap(baseaddr, 0x24); 526 req.mapbase = baseaddr; 527 req.irq = irq; 528 if (!nocts) 529 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/; 530 if (sclk) { 531 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/; 532 req.uartclk = sclk; 533 } else 534 req.uartclk = TXX9_IMCLK; 535 early_serial_txx9_setup(&req); 536 #endif /* CONFIG_SERIAL_TXX9 */ 537 } 538 539 #ifdef CONFIG_EARLY_PRINTK 540 static void __init null_prom_putchar(char c) 541 { 542 } 543 void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar; 544 545 void __init prom_putchar(char c) 546 { 547 txx9_prom_putchar(c); 548 } 549 550 static void __iomem *early_txx9_sio_port; 551 552 static void __init early_txx9_sio_putchar(char c) 553 { 554 #define TXX9_SICISR 0x0c 555 #define TXX9_SITFIFO 0x1c 556 #define TXX9_SICISR_TXALS 0x00000002 557 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) & 558 TXX9_SICISR_TXALS)) 559 ; 560 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO); 561 } 562 563 void __init txx9_sio_putchar_init(unsigned long baseaddr) 564 { 565 early_txx9_sio_port = ioremap(baseaddr, 0x24); 566 txx9_prom_putchar = early_txx9_sio_putchar; 567 } 568 #endif /* CONFIG_EARLY_PRINTK */ 569 570 /* wrappers */ 571 void __init plat_mem_setup(void) 572 { 573 ioport_resource.start = 0; 574 ioport_resource.end = ~0UL; /* no limit */ 575 iomem_resource.start = 0; 576 iomem_resource.end = ~0UL; /* no limit */ 577 578 /* fallback restart/halt routines */ 579 _machine_restart = (void (*)(char *))txx9_machine_halt; 580 _machine_halt = txx9_machine_halt; 581 pm_power_off = txx9_machine_halt; 582 583 #ifdef CONFIG_PCI 584 pcibios_plat_setup = txx9_pcibios_setup; 585 #endif 586 txx9_board_vec->mem_setup(); 587 } 588 589 void __init arch_init_irq(void) 590 { 591 txx9_board_vec->irq_setup(); 592 } 593 594 void __init plat_time_init(void) 595 { 596 #ifdef CONFIG_CPU_TX49XX 597 mips_hpt_frequency = txx9_cpu_clock / 2; 598 #endif 599 txx9_board_vec->time_init(); 600 } 601 602 static int __init _txx9_arch_init(void) 603 { 604 if (txx9_board_vec->arch_init) 605 txx9_board_vec->arch_init(); 606 return 0; 607 } 608 arch_initcall(_txx9_arch_init); 609 610 static int __init _txx9_device_init(void) 611 { 612 if (txx9_board_vec->device_init) 613 txx9_board_vec->device_init(); 614 return 0; 615 } 616 device_initcall(_txx9_device_init); 617 618 int (*txx9_irq_dispatch)(int pending); 619 asmlinkage void plat_irq_dispatch(void) 620 { 621 int pending = read_c0_status() & read_c0_cause() & ST0_IM; 622 int irq = txx9_irq_dispatch(pending); 623 624 if (likely(irq >= 0)) 625 do_IRQ(irq); 626 else 627 spurious_interrupt(); 628 } 629 630 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */ 631 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B 632 static unsigned long __swizzle_addr_none(unsigned long port) 633 { 634 return port; 635 } 636 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none; 637 EXPORT_SYMBOL(__swizzle_addr_b); 638 #endif 639 640 #ifdef NEEDS_TXX9_IOSWABW 641 static u16 ioswabw_default(volatile u16 *a, u16 x) 642 { 643 return le16_to_cpu(x); 644 } 645 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x) 646 { 647 return x; 648 } 649 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default; 650 EXPORT_SYMBOL(ioswabw); 651 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default; 652 EXPORT_SYMBOL(__mem_ioswabw); 653 #endif 654 655 void __init txx9_physmap_flash_init(int no, unsigned long addr, 656 unsigned long size, 657 const struct physmap_flash_data *pdata) 658 { 659 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE) 660 struct resource res = { 661 .start = addr, 662 .end = addr + size - 1, 663 .flags = IORESOURCE_MEM, 664 }; 665 struct platform_device *pdev; 666 #ifdef CONFIG_MTD_PARTITIONS 667 static struct mtd_partition parts[2]; 668 struct physmap_flash_data pdata_part; 669 670 /* If this area contained boot area, make separate partition */ 671 if (pdata->nr_parts == 0 && !pdata->parts && 672 addr < 0x1fc00000 && addr + size > 0x1fc00000 && 673 !parts[0].name) { 674 parts[0].name = "boot"; 675 parts[0].offset = 0x1fc00000 - addr; 676 parts[0].size = addr + size - 0x1fc00000; 677 parts[1].name = "user"; 678 parts[1].offset = 0; 679 parts[1].size = 0x1fc00000 - addr; 680 pdata_part = *pdata; 681 pdata_part.nr_parts = ARRAY_SIZE(parts); 682 pdata_part.parts = parts; 683 pdata = &pdata_part; 684 } 685 #endif 686 pdev = platform_device_alloc("physmap-flash", no); 687 if (!pdev || 688 platform_device_add_resources(pdev, &res, 1) || 689 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 690 platform_device_add(pdev)) 691 platform_device_put(pdev); 692 #endif 693 } 694 695 void __init txx9_ndfmc_init(unsigned long baseaddr, 696 const struct txx9ndfmc_platform_data *pdata) 697 { 698 #if defined(CONFIG_MTD_NAND_TXX9NDFMC) || \ 699 defined(CONFIG_MTD_NAND_TXX9NDFMC_MODULE) 700 struct resource res = { 701 .start = baseaddr, 702 .end = baseaddr + 0x1000 - 1, 703 .flags = IORESOURCE_MEM, 704 }; 705 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1); 706 707 if (!pdev || 708 platform_device_add_resources(pdev, &res, 1) || 709 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 710 platform_device_add(pdev)) 711 platform_device_put(pdev); 712 #endif 713 } 714 715 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE) 716 static DEFINE_SPINLOCK(txx9_iocled_lock); 717 718 #define TXX9_IOCLED_MAXLEDS 8 719 720 struct txx9_iocled_data { 721 struct gpio_chip chip; 722 u8 cur_val; 723 void __iomem *mmioaddr; 724 struct gpio_led_platform_data pdata; 725 struct gpio_led leds[TXX9_IOCLED_MAXLEDS]; 726 char names[TXX9_IOCLED_MAXLEDS][32]; 727 }; 728 729 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset) 730 { 731 struct txx9_iocled_data *data = 732 container_of(chip, struct txx9_iocled_data, chip); 733 return data->cur_val & (1 << offset); 734 } 735 736 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset, 737 int value) 738 { 739 struct txx9_iocled_data *data = 740 container_of(chip, struct txx9_iocled_data, chip); 741 unsigned long flags; 742 spin_lock_irqsave(&txx9_iocled_lock, flags); 743 if (value) 744 data->cur_val |= 1 << offset; 745 else 746 data->cur_val &= ~(1 << offset); 747 writeb(data->cur_val, data->mmioaddr); 748 mmiowb(); 749 spin_unlock_irqrestore(&txx9_iocled_lock, flags); 750 } 751 752 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset) 753 { 754 return 0; 755 } 756 757 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset, 758 int value) 759 { 760 txx9_iocled_set(chip, offset, value); 761 return 0; 762 } 763 764 void __init txx9_iocled_init(unsigned long baseaddr, 765 int basenum, unsigned int num, int lowactive, 766 const char *color, char **deftriggers) 767 { 768 struct txx9_iocled_data *iocled; 769 struct platform_device *pdev; 770 int i; 771 static char *default_triggers[] __initdata = { 772 "heartbeat", 773 "ide-disk", 774 "nand-disk", 775 NULL, 776 }; 777 778 if (!deftriggers) 779 deftriggers = default_triggers; 780 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL); 781 if (!iocled) 782 return; 783 iocled->mmioaddr = ioremap(baseaddr, 1); 784 if (!iocled->mmioaddr) 785 goto out_free; 786 iocled->chip.get = txx9_iocled_get; 787 iocled->chip.set = txx9_iocled_set; 788 iocled->chip.direction_input = txx9_iocled_dir_in; 789 iocled->chip.direction_output = txx9_iocled_dir_out; 790 iocled->chip.label = "iocled"; 791 iocled->chip.base = basenum; 792 iocled->chip.ngpio = num; 793 if (gpiochip_add(&iocled->chip)) 794 goto out_unmap; 795 if (basenum < 0) 796 basenum = iocled->chip.base; 797 798 pdev = platform_device_alloc("leds-gpio", basenum); 799 if (!pdev) 800 goto out_gpio; 801 iocled->pdata.num_leds = num; 802 iocled->pdata.leds = iocled->leds; 803 for (i = 0; i < num; i++) { 804 struct gpio_led *led = &iocled->leds[i]; 805 snprintf(iocled->names[i], sizeof(iocled->names[i]), 806 "iocled:%s:%u", color, i); 807 led->name = iocled->names[i]; 808 led->gpio = basenum + i; 809 led->active_low = lowactive; 810 if (deftriggers && *deftriggers) 811 led->default_trigger = *deftriggers++; 812 } 813 pdev->dev.platform_data = &iocled->pdata; 814 if (platform_device_add(pdev)) 815 goto out_pdev; 816 return; 817 out_pdev: 818 platform_device_put(pdev); 819 out_gpio: 820 gpio_remove(&iocled->chip); 821 out_unmap: 822 iounmap(iocled->mmioaddr); 823 out_free: 824 kfree(iocled); 825 } 826 #else /* CONFIG_LEDS_GPIO */ 827 void __init txx9_iocled_init(unsigned long baseaddr, 828 int basenum, unsigned int num, int lowactive, 829 const char *color, char **deftriggers) 830 { 831 } 832 #endif /* CONFIG_LEDS_GPIO */ 833 834 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq, 835 const struct txx9dmac_platform_data *pdata) 836 { 837 #if defined(CONFIG_TXX9_DMAC) || defined(CONFIG_TXX9_DMAC_MODULE) 838 struct resource res[] = { 839 { 840 .start = baseaddr, 841 .end = baseaddr + 0x800 - 1, 842 .flags = IORESOURCE_MEM, 843 #ifndef CONFIG_MACH_TX49XX 844 }, { 845 .start = irq, 846 .flags = IORESOURCE_IRQ, 847 #endif 848 } 849 }; 850 #ifdef CONFIG_MACH_TX49XX 851 struct resource chan_res[] = { 852 { 853 .flags = IORESOURCE_IRQ, 854 } 855 }; 856 #endif 857 struct platform_device *pdev = platform_device_alloc("txx9dmac", id); 858 struct txx9dmac_chan_platform_data cpdata; 859 int i; 860 861 if (!pdev || 862 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || 863 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 864 platform_device_add(pdev)) { 865 platform_device_put(pdev); 866 return; 867 } 868 memset(&cpdata, 0, sizeof(cpdata)); 869 cpdata.dmac_dev = pdev; 870 for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) { 871 #ifdef CONFIG_MACH_TX49XX 872 chan_res[0].start = irq + i; 873 #endif 874 pdev = platform_device_alloc("txx9dmac-chan", 875 id * TXX9_DMA_MAX_NR_CHANNELS + i); 876 if (!pdev || 877 #ifdef CONFIG_MACH_TX49XX 878 platform_device_add_resources(pdev, chan_res, 879 ARRAY_SIZE(chan_res)) || 880 #endif 881 platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) || 882 platform_device_add(pdev)) 883 platform_device_put(pdev); 884 } 885 #endif 886 } 887 888 void __init txx9_aclc_init(unsigned long baseaddr, int irq, 889 unsigned int dmac_id, 890 unsigned int dma_chan_out, 891 unsigned int dma_chan_in) 892 { 893 #if defined(CONFIG_SND_SOC_TXX9ACLC) || \ 894 defined(CONFIG_SND_SOC_TXX9ACLC_MODULE) 895 unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS; 896 struct resource res[] = { 897 { 898 .start = baseaddr, 899 .end = baseaddr + 0x100 - 1, 900 .flags = IORESOURCE_MEM, 901 }, { 902 .start = irq, 903 .flags = IORESOURCE_IRQ, 904 }, { 905 .name = "txx9dmac-chan", 906 .start = dma_base + dma_chan_out, 907 .flags = IORESOURCE_DMA, 908 }, { 909 .name = "txx9dmac-chan", 910 .start = dma_base + dma_chan_in, 911 .flags = IORESOURCE_DMA, 912 } 913 }; 914 struct platform_device *pdev = 915 platform_device_alloc("txx9aclc-ac97", -1); 916 917 if (!pdev || 918 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || 919 platform_device_add(pdev)) 920 platform_device_put(pdev); 921 #endif 922 } 923 924 static struct sysdev_class txx9_sramc_sysdev_class; 925 926 struct txx9_sramc_sysdev { 927 struct sys_device dev; 928 struct bin_attribute bindata_attr; 929 void __iomem *base; 930 }; 931 932 static ssize_t txx9_sram_read(struct kobject *kobj, 933 struct bin_attribute *bin_attr, 934 char *buf, loff_t pos, size_t size) 935 { 936 struct txx9_sramc_sysdev *dev = bin_attr->private; 937 size_t ramsize = bin_attr->size; 938 939 if (pos >= ramsize) 940 return 0; 941 if (pos + size > ramsize) 942 size = ramsize - pos; 943 memcpy_fromio(buf, dev->base + pos, size); 944 return size; 945 } 946 947 static ssize_t txx9_sram_write(struct kobject *kobj, 948 struct bin_attribute *bin_attr, 949 char *buf, loff_t pos, size_t size) 950 { 951 struct txx9_sramc_sysdev *dev = bin_attr->private; 952 size_t ramsize = bin_attr->size; 953 954 if (pos >= ramsize) 955 return 0; 956 if (pos + size > ramsize) 957 size = ramsize - pos; 958 memcpy_toio(dev->base + pos, buf, size); 959 return size; 960 } 961 962 void __init txx9_sramc_init(struct resource *r) 963 { 964 struct txx9_sramc_sysdev *dev; 965 size_t size; 966 int err; 967 968 if (!txx9_sramc_sysdev_class.name) { 969 txx9_sramc_sysdev_class.name = "txx9_sram"; 970 err = sysdev_class_register(&txx9_sramc_sysdev_class); 971 if (err) { 972 txx9_sramc_sysdev_class.name = NULL; 973 return; 974 } 975 } 976 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 977 if (!dev) 978 return; 979 size = resource_size(r); 980 dev->base = ioremap(r->start, size); 981 if (!dev->base) 982 goto exit; 983 dev->dev.cls = &txx9_sramc_sysdev_class; 984 dev->bindata_attr.attr.name = "bindata"; 985 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR; 986 dev->bindata_attr.read = txx9_sram_read; 987 dev->bindata_attr.write = txx9_sram_write; 988 dev->bindata_attr.size = size; 989 dev->bindata_attr.private = dev; 990 err = sysdev_register(&dev->dev); 991 if (err) 992 goto exit; 993 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr); 994 if (err) { 995 sysdev_unregister(&dev->dev); 996 goto exit; 997 } 998 return; 999 exit: 1000 if (dev) { 1001 if (dev->base) 1002 iounmap(dev->base); 1003 kfree(dev); 1004 } 1005 } 1006