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