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/driver.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/device.h> 26 #include <linux/slab.h> 27 #include <linux/irq.h> 28 #include <asm/bootinfo.h> 29 #include <asm/idle.h> 30 #include <asm/time.h> 31 #include <asm/reboot.h> 32 #include <asm/r4kcache.h> 33 #include <asm/sections.h> 34 #include <asm/txx9/generic.h> 35 #include <asm/txx9/pci.h> 36 #include <asm/txx9tmr.h> 37 #include <asm/txx9/ndfmc.h> 38 #include <asm/txx9/dmac.h> 39 #ifdef CONFIG_CPU_TX49XX 40 #include <asm/txx9/tx4938.h> 41 #endif 42 43 /* EBUSC settings of TX4927, etc. */ 44 struct resource txx9_ce_res[8]; 45 static char txx9_ce_res_name[8][4]; /* "CEn" */ 46 47 /* pcode, internal register */ 48 unsigned int txx9_pcode; 49 char txx9_pcode_str[8]; 50 static struct resource txx9_reg_res = { 51 .name = txx9_pcode_str, 52 .flags = IORESOURCE_MEM, 53 }; 54 void __init 55 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) 56 { 57 int i; 58 59 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { 60 sprintf(txx9_ce_res_name[i], "CE%d", i); 61 txx9_ce_res[i].flags = IORESOURCE_MEM; 62 txx9_ce_res[i].name = txx9_ce_res_name[i]; 63 } 64 65 txx9_pcode = pcode; 66 sprintf(txx9_pcode_str, "TX%x", pcode); 67 if (base) { 68 txx9_reg_res.start = base & 0xfffffffffULL; 69 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); 70 request_resource(&iomem_resource, &txx9_reg_res); 71 } 72 } 73 74 /* clocks */ 75 unsigned int txx9_master_clock; 76 unsigned int txx9_cpu_clock; 77 unsigned int txx9_gbus_clock; 78 79 #ifdef CONFIG_CPU_TX39XX 80 /* don't enable by default - see errata */ 81 int txx9_ccfg_toeon __initdata; 82 #else 83 int txx9_ccfg_toeon __initdata = 1; 84 #endif 85 86 /* Minimum CLK support */ 87 88 struct clk *clk_get(struct device *dev, const char *id) 89 { 90 if (!strcmp(id, "spi-baseclk")) 91 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2); 92 if (!strcmp(id, "imbus_clk")) 93 return (struct clk *)((unsigned long)txx9_gbus_clock / 2); 94 return ERR_PTR(-ENOENT); 95 } 96 EXPORT_SYMBOL(clk_get); 97 98 int clk_enable(struct clk *clk) 99 { 100 return 0; 101 } 102 EXPORT_SYMBOL(clk_enable); 103 104 void clk_disable(struct clk *clk) 105 { 106 } 107 EXPORT_SYMBOL(clk_disable); 108 109 unsigned long clk_get_rate(struct clk *clk) 110 { 111 return (unsigned long)clk; 112 } 113 EXPORT_SYMBOL(clk_get_rate); 114 115 void clk_put(struct clk *clk) 116 { 117 } 118 EXPORT_SYMBOL(clk_put); 119 120 #define BOARD_VEC(board) extern struct txx9_board_vec board; 121 #include <asm/txx9/boards.h> 122 #undef BOARD_VEC 123 124 struct txx9_board_vec *txx9_board_vec __initdata; 125 static char txx9_system_type[32]; 126 127 static struct txx9_board_vec *board_vecs[] __initdata = { 128 #define BOARD_VEC(board) &board, 129 #include <asm/txx9/boards.h> 130 #undef BOARD_VEC 131 }; 132 133 static struct txx9_board_vec *__init find_board_byname(const char *name) 134 { 135 int i; 136 137 /* search board_vecs table */ 138 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) { 139 if (strstr(board_vecs[i]->system, name)) 140 return board_vecs[i]; 141 } 142 return NULL; 143 } 144 145 static void __init prom_init_cmdline(void) 146 { 147 int argc; 148 int *argv32; 149 int i; /* Always ignore the "-c" at argv[0] */ 150 151 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) { 152 /* 153 * argc is not a valid number, or argv32 is not a valid 154 * pointer 155 */ 156 argc = 0; 157 argv32 = NULL; 158 } else { 159 argc = (int)fw_arg0; 160 argv32 = (int *)fw_arg1; 161 } 162 163 arcs_cmdline[0] = '\0'; 164 165 for (i = 1; i < argc; i++) { 166 char *str = (char *)(long)argv32[i]; 167 if (i != 1) 168 strcat(arcs_cmdline, " "); 169 if (strchr(str, ' ')) { 170 strcat(arcs_cmdline, "\""); 171 strcat(arcs_cmdline, str); 172 strcat(arcs_cmdline, "\""); 173 } else 174 strcat(arcs_cmdline, str); 175 } 176 } 177 178 static int txx9_ic_disable __initdata; 179 static int txx9_dc_disable __initdata; 180 181 #if defined(CONFIG_CPU_TX49XX) 182 /* flush all cache on very early stage (before 4k_cache_init) */ 183 static void __init early_flush_dcache(void) 184 { 185 unsigned int conf = read_c0_config(); 186 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6)); 187 unsigned int linesz = 32; 188 unsigned long addr, end; 189 190 end = INDEX_BASE + dc_size / 4; 191 /* 4way, waybit=0 */ 192 for (addr = INDEX_BASE; addr < end; addr += linesz) { 193 cache_op(Index_Writeback_Inv_D, addr | 0); 194 cache_op(Index_Writeback_Inv_D, addr | 1); 195 cache_op(Index_Writeback_Inv_D, addr | 2); 196 cache_op(Index_Writeback_Inv_D, addr | 3); 197 } 198 } 199 200 static void __init txx9_cache_fixup(void) 201 { 202 unsigned int conf; 203 204 conf = read_c0_config(); 205 /* flush and disable */ 206 if (txx9_ic_disable) { 207 conf |= TX49_CONF_IC; 208 write_c0_config(conf); 209 } 210 if (txx9_dc_disable) { 211 early_flush_dcache(); 212 conf |= TX49_CONF_DC; 213 write_c0_config(conf); 214 } 215 216 /* enable cache */ 217 conf = read_c0_config(); 218 if (!txx9_ic_disable) 219 conf &= ~TX49_CONF_IC; 220 if (!txx9_dc_disable) 221 conf &= ~TX49_CONF_DC; 222 write_c0_config(conf); 223 224 if (conf & TX49_CONF_IC) 225 pr_info("TX49XX I-Cache disabled.\n"); 226 if (conf & TX49_CONF_DC) 227 pr_info("TX49XX D-Cache disabled.\n"); 228 } 229 #elif defined(CONFIG_CPU_TX39XX) 230 /* flush all cache on very early stage (before tx39_cache_init) */ 231 static void __init early_flush_dcache(void) 232 { 233 unsigned int conf = read_c0_config(); 234 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >> 235 TX39_CONF_DCS_SHIFT)); 236 unsigned int linesz = 16; 237 unsigned long addr, end; 238 239 end = INDEX_BASE + dc_size / 2; 240 /* 2way, waybit=0 */ 241 for (addr = INDEX_BASE; addr < end; addr += linesz) { 242 cache_op(Index_Writeback_Inv_D, addr | 0); 243 cache_op(Index_Writeback_Inv_D, addr | 1); 244 } 245 } 246 247 static void __init txx9_cache_fixup(void) 248 { 249 unsigned int conf; 250 251 conf = read_c0_config(); 252 /* flush and disable */ 253 if (txx9_ic_disable) { 254 conf &= ~TX39_CONF_ICE; 255 write_c0_config(conf); 256 } 257 if (txx9_dc_disable) { 258 early_flush_dcache(); 259 conf &= ~TX39_CONF_DCE; 260 write_c0_config(conf); 261 } 262 263 /* enable cache */ 264 conf = read_c0_config(); 265 if (!txx9_ic_disable) 266 conf |= TX39_CONF_ICE; 267 if (!txx9_dc_disable) 268 conf |= TX39_CONF_DCE; 269 write_c0_config(conf); 270 271 if (!(conf & TX39_CONF_ICE)) 272 pr_info("TX39XX I-Cache disabled.\n"); 273 if (!(conf & TX39_CONF_DCE)) 274 pr_info("TX39XX D-Cache disabled.\n"); 275 } 276 #else 277 static inline void txx9_cache_fixup(void) 278 { 279 } 280 #endif 281 282 static void __init preprocess_cmdline(void) 283 { 284 static char cmdline[COMMAND_LINE_SIZE] __initdata; 285 char *s; 286 287 strcpy(cmdline, arcs_cmdline); 288 s = cmdline; 289 arcs_cmdline[0] = '\0'; 290 while (s && *s) { 291 char *str = strsep(&s, " "); 292 if (strncmp(str, "board=", 6) == 0) { 293 txx9_board_vec = find_board_byname(str + 6); 294 continue; 295 } else if (strncmp(str, "masterclk=", 10) == 0) { 296 unsigned int val; 297 if (kstrtouint(str + 10, 10, &val) == 0) 298 txx9_master_clock = val; 299 continue; 300 } else if (strcmp(str, "icdisable") == 0) { 301 txx9_ic_disable = 1; 302 continue; 303 } else if (strcmp(str, "dcdisable") == 0) { 304 txx9_dc_disable = 1; 305 continue; 306 } else if (strcmp(str, "toeoff") == 0) { 307 txx9_ccfg_toeon = 0; 308 continue; 309 } else if (strcmp(str, "toeon") == 0) { 310 txx9_ccfg_toeon = 1; 311 continue; 312 } 313 if (arcs_cmdline[0]) 314 strcat(arcs_cmdline, " "); 315 strcat(arcs_cmdline, str); 316 } 317 318 txx9_cache_fixup(); 319 } 320 321 static void __init select_board(void) 322 { 323 const char *envstr; 324 325 /* first, determine by "board=" argument in preprocess_cmdline() */ 326 if (txx9_board_vec) 327 return; 328 /* next, determine by "board" envvar */ 329 envstr = prom_getenv("board"); 330 if (envstr) { 331 txx9_board_vec = find_board_byname(envstr); 332 if (txx9_board_vec) 333 return; 334 } 335 336 /* select "default" board */ 337 #ifdef CONFIG_TOSHIBA_JMR3927 338 txx9_board_vec = &jmr3927_vec; 339 #endif 340 #ifdef CONFIG_CPU_TX49XX 341 switch (TX4938_REV_PCODE()) { 342 #ifdef CONFIG_TOSHIBA_RBTX4927 343 case 0x4927: 344 txx9_board_vec = &rbtx4927_vec; 345 break; 346 case 0x4937: 347 txx9_board_vec = &rbtx4937_vec; 348 break; 349 #endif 350 #ifdef CONFIG_TOSHIBA_RBTX4938 351 case 0x4938: 352 txx9_board_vec = &rbtx4938_vec; 353 break; 354 #endif 355 #ifdef CONFIG_TOSHIBA_RBTX4939 356 case 0x4939: 357 txx9_board_vec = &rbtx4939_vec; 358 break; 359 #endif 360 } 361 #endif 362 } 363 364 void __init prom_init(void) 365 { 366 prom_init_cmdline(); 367 preprocess_cmdline(); 368 select_board(); 369 370 strcpy(txx9_system_type, txx9_board_vec->system); 371 372 txx9_board_vec->prom_init(); 373 } 374 375 void __init prom_free_prom_memory(void) 376 { 377 unsigned long saddr = PAGE_SIZE; 378 unsigned long eaddr = __pa_symbol(&_text); 379 380 if (saddr < eaddr) 381 free_init_pages("prom memory", saddr, eaddr); 382 } 383 384 const char *get_system_type(void) 385 { 386 return txx9_system_type; 387 } 388 389 const char *__init prom_getenv(const char *name) 390 { 391 const s32 *str; 392 393 if (fw_arg2 < CKSEG0) 394 return NULL; 395 396 str = (const s32 *)fw_arg2; 397 /* YAMON style ("name", "value" pairs) */ 398 while (str[0] && str[1]) { 399 if (!strcmp((const char *)(unsigned long)str[0], name)) 400 return (const char *)(unsigned long)str[1]; 401 str += 2; 402 } 403 return NULL; 404 } 405 406 static void __noreturn txx9_machine_halt(void) 407 { 408 local_irq_disable(); 409 clear_c0_status(ST0_IM); 410 while (1) { 411 if (cpu_wait) { 412 (*cpu_wait)(); 413 if (cpu_has_counter) { 414 /* 415 * Clear counter interrupt while it 416 * breaks WAIT instruction even if 417 * masked. 418 */ 419 write_c0_compare(0); 420 } 421 } 422 } 423 } 424 425 /* Watchdog support */ 426 void __init txx9_wdt_init(unsigned long base) 427 { 428 struct resource res = { 429 .start = base, 430 .end = base + 0x100 - 1, 431 .flags = IORESOURCE_MEM, 432 }; 433 platform_device_register_simple("txx9wdt", -1, &res, 1); 434 } 435 436 void txx9_wdt_now(unsigned long base) 437 { 438 struct txx9_tmr_reg __iomem *tmrptr = 439 ioremap(base, sizeof(struct txx9_tmr_reg)); 440 /* disable watch dog timer */ 441 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr); 442 __raw_writel(0, &tmrptr->tcr); 443 /* kick watchdog */ 444 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr); 445 __raw_writel(1, &tmrptr->cpra); /* immediate */ 446 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG, 447 &tmrptr->tcr); 448 } 449 450 /* SPI support */ 451 void __init txx9_spi_init(int busid, unsigned long base, int irq) 452 { 453 struct resource res[] = { 454 { 455 .start = base, 456 .end = base + 0x20 - 1, 457 .flags = IORESOURCE_MEM, 458 }, { 459 .start = irq, 460 .flags = IORESOURCE_IRQ, 461 }, 462 }; 463 platform_device_register_simple("spi_txx9", busid, 464 res, ARRAY_SIZE(res)); 465 } 466 467 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr) 468 { 469 struct platform_device *pdev = 470 platform_device_alloc("tc35815-mac", id); 471 if (!pdev || 472 platform_device_add_data(pdev, ethaddr, 6) || 473 platform_device_add(pdev)) 474 platform_device_put(pdev); 475 } 476 477 void __init txx9_sio_init(unsigned long baseaddr, int irq, 478 unsigned int line, unsigned int sclk, int nocts) 479 { 480 #ifdef CONFIG_SERIAL_TXX9 481 struct uart_port req; 482 483 memset(&req, 0, sizeof(req)); 484 req.line = line; 485 req.iotype = UPIO_MEM; 486 req.membase = ioremap(baseaddr, 0x24); 487 req.mapbase = baseaddr; 488 req.irq = irq; 489 if (!nocts) 490 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/; 491 if (sclk) { 492 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/; 493 req.uartclk = sclk; 494 } else 495 req.uartclk = TXX9_IMCLK; 496 early_serial_txx9_setup(&req); 497 #endif /* CONFIG_SERIAL_TXX9 */ 498 } 499 500 #ifdef CONFIG_EARLY_PRINTK 501 static void null_prom_putchar(char c) 502 { 503 } 504 void (*txx9_prom_putchar)(char c) = null_prom_putchar; 505 506 void prom_putchar(char c) 507 { 508 txx9_prom_putchar(c); 509 } 510 511 static void __iomem *early_txx9_sio_port; 512 513 static void early_txx9_sio_putchar(char c) 514 { 515 #define TXX9_SICISR 0x0c 516 #define TXX9_SITFIFO 0x1c 517 #define TXX9_SICISR_TXALS 0x00000002 518 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) & 519 TXX9_SICISR_TXALS)) 520 ; 521 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO); 522 } 523 524 void __init txx9_sio_putchar_init(unsigned long baseaddr) 525 { 526 early_txx9_sio_port = ioremap(baseaddr, 0x24); 527 txx9_prom_putchar = early_txx9_sio_putchar; 528 } 529 #endif /* CONFIG_EARLY_PRINTK */ 530 531 /* wrappers */ 532 void __init plat_mem_setup(void) 533 { 534 ioport_resource.start = 0; 535 ioport_resource.end = ~0UL; /* no limit */ 536 iomem_resource.start = 0; 537 iomem_resource.end = ~0UL; /* no limit */ 538 539 /* fallback restart/halt routines */ 540 _machine_restart = (void (*)(char *))txx9_machine_halt; 541 _machine_halt = txx9_machine_halt; 542 pm_power_off = txx9_machine_halt; 543 544 #ifdef CONFIG_PCI 545 pcibios_plat_setup = txx9_pcibios_setup; 546 #endif 547 txx9_board_vec->mem_setup(); 548 } 549 550 void __init arch_init_irq(void) 551 { 552 txx9_board_vec->irq_setup(); 553 } 554 555 void __init plat_time_init(void) 556 { 557 #ifdef CONFIG_CPU_TX49XX 558 mips_hpt_frequency = txx9_cpu_clock / 2; 559 #endif 560 txx9_board_vec->time_init(); 561 } 562 563 static int __init _txx9_arch_init(void) 564 { 565 if (txx9_board_vec->arch_init) 566 txx9_board_vec->arch_init(); 567 return 0; 568 } 569 arch_initcall(_txx9_arch_init); 570 571 static int __init _txx9_device_init(void) 572 { 573 if (txx9_board_vec->device_init) 574 txx9_board_vec->device_init(); 575 return 0; 576 } 577 device_initcall(_txx9_device_init); 578 579 int (*txx9_irq_dispatch)(int pending); 580 asmlinkage void plat_irq_dispatch(void) 581 { 582 int pending = read_c0_status() & read_c0_cause() & ST0_IM; 583 int irq = txx9_irq_dispatch(pending); 584 585 if (likely(irq >= 0)) 586 do_IRQ(irq); 587 else 588 spurious_interrupt(); 589 } 590 591 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */ 592 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B 593 static unsigned long __swizzle_addr_none(unsigned long port) 594 { 595 return port; 596 } 597 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none; 598 EXPORT_SYMBOL(__swizzle_addr_b); 599 #endif 600 601 #ifdef NEEDS_TXX9_IOSWABW 602 static u16 ioswabw_default(volatile u16 *a, u16 x) 603 { 604 return le16_to_cpu(x); 605 } 606 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x) 607 { 608 return x; 609 } 610 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default; 611 EXPORT_SYMBOL(ioswabw); 612 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default; 613 EXPORT_SYMBOL(__mem_ioswabw); 614 #endif 615 616 void __init txx9_physmap_flash_init(int no, unsigned long addr, 617 unsigned long size, 618 const struct physmap_flash_data *pdata) 619 { 620 #if IS_ENABLED(CONFIG_MTD_PHYSMAP) 621 struct resource res = { 622 .start = addr, 623 .end = addr + size - 1, 624 .flags = IORESOURCE_MEM, 625 }; 626 struct platform_device *pdev; 627 static struct mtd_partition parts[2]; 628 struct physmap_flash_data pdata_part; 629 630 /* If this area contained boot area, make separate partition */ 631 if (pdata->nr_parts == 0 && !pdata->parts && 632 addr < 0x1fc00000 && addr + size > 0x1fc00000 && 633 !parts[0].name) { 634 parts[0].name = "boot"; 635 parts[0].offset = 0x1fc00000 - addr; 636 parts[0].size = addr + size - 0x1fc00000; 637 parts[1].name = "user"; 638 parts[1].offset = 0; 639 parts[1].size = 0x1fc00000 - addr; 640 pdata_part = *pdata; 641 pdata_part.nr_parts = ARRAY_SIZE(parts); 642 pdata_part.parts = parts; 643 pdata = &pdata_part; 644 } 645 646 pdev = platform_device_alloc("physmap-flash", no); 647 if (!pdev || 648 platform_device_add_resources(pdev, &res, 1) || 649 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 650 platform_device_add(pdev)) 651 platform_device_put(pdev); 652 #endif 653 } 654 655 void __init txx9_ndfmc_init(unsigned long baseaddr, 656 const struct txx9ndfmc_platform_data *pdata) 657 { 658 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC) 659 struct resource res = { 660 .start = baseaddr, 661 .end = baseaddr + 0x1000 - 1, 662 .flags = IORESOURCE_MEM, 663 }; 664 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1); 665 666 if (!pdev || 667 platform_device_add_resources(pdev, &res, 1) || 668 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 669 platform_device_add(pdev)) 670 platform_device_put(pdev); 671 #endif 672 } 673 674 #if IS_ENABLED(CONFIG_LEDS_GPIO) 675 static DEFINE_SPINLOCK(txx9_iocled_lock); 676 677 #define TXX9_IOCLED_MAXLEDS 8 678 679 struct txx9_iocled_data { 680 struct gpio_chip chip; 681 u8 cur_val; 682 void __iomem *mmioaddr; 683 struct gpio_led_platform_data pdata; 684 struct gpio_led leds[TXX9_IOCLED_MAXLEDS]; 685 char names[TXX9_IOCLED_MAXLEDS][32]; 686 }; 687 688 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset) 689 { 690 struct txx9_iocled_data *data = gpiochip_get_data(chip); 691 return !!(data->cur_val & (1 << offset)); 692 } 693 694 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset, 695 int value) 696 { 697 struct txx9_iocled_data *data = gpiochip_get_data(chip); 698 unsigned long flags; 699 spin_lock_irqsave(&txx9_iocled_lock, flags); 700 if (value) 701 data->cur_val |= 1 << offset; 702 else 703 data->cur_val &= ~(1 << offset); 704 writeb(data->cur_val, data->mmioaddr); 705 mmiowb(); 706 spin_unlock_irqrestore(&txx9_iocled_lock, flags); 707 } 708 709 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset) 710 { 711 return 0; 712 } 713 714 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset, 715 int value) 716 { 717 txx9_iocled_set(chip, offset, value); 718 return 0; 719 } 720 721 void __init txx9_iocled_init(unsigned long baseaddr, 722 int basenum, unsigned int num, int lowactive, 723 const char *color, char **deftriggers) 724 { 725 struct txx9_iocled_data *iocled; 726 struct platform_device *pdev; 727 int i; 728 static char *default_triggers[] __initdata = { 729 "heartbeat", 730 "disk-activity", 731 "nand-disk", 732 NULL, 733 }; 734 735 if (!deftriggers) 736 deftriggers = default_triggers; 737 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL); 738 if (!iocled) 739 return; 740 iocled->mmioaddr = ioremap(baseaddr, 1); 741 if (!iocled->mmioaddr) 742 goto out_free; 743 iocled->chip.get = txx9_iocled_get; 744 iocled->chip.set = txx9_iocled_set; 745 iocled->chip.direction_input = txx9_iocled_dir_in; 746 iocled->chip.direction_output = txx9_iocled_dir_out; 747 iocled->chip.label = "iocled"; 748 iocled->chip.base = basenum; 749 iocled->chip.ngpio = num; 750 if (gpiochip_add_data(&iocled->chip, iocled)) 751 goto out_unmap; 752 if (basenum < 0) 753 basenum = iocled->chip.base; 754 755 pdev = platform_device_alloc("leds-gpio", basenum); 756 if (!pdev) 757 goto out_gpio; 758 iocled->pdata.num_leds = num; 759 iocled->pdata.leds = iocled->leds; 760 for (i = 0; i < num; i++) { 761 struct gpio_led *led = &iocled->leds[i]; 762 snprintf(iocled->names[i], sizeof(iocled->names[i]), 763 "iocled:%s:%u", color, i); 764 led->name = iocled->names[i]; 765 led->gpio = basenum + i; 766 led->active_low = lowactive; 767 if (deftriggers && *deftriggers) 768 led->default_trigger = *deftriggers++; 769 } 770 pdev->dev.platform_data = &iocled->pdata; 771 if (platform_device_add(pdev)) 772 goto out_pdev; 773 return; 774 775 out_pdev: 776 platform_device_put(pdev); 777 out_gpio: 778 gpiochip_remove(&iocled->chip); 779 out_unmap: 780 iounmap(iocled->mmioaddr); 781 out_free: 782 kfree(iocled); 783 } 784 #else /* CONFIG_LEDS_GPIO */ 785 void __init txx9_iocled_init(unsigned long baseaddr, 786 int basenum, unsigned int num, int lowactive, 787 const char *color, char **deftriggers) 788 { 789 } 790 #endif /* CONFIG_LEDS_GPIO */ 791 792 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq, 793 const struct txx9dmac_platform_data *pdata) 794 { 795 #if IS_ENABLED(CONFIG_TXX9_DMAC) 796 struct resource res[] = { 797 { 798 .start = baseaddr, 799 .end = baseaddr + 0x800 - 1, 800 .flags = IORESOURCE_MEM, 801 #ifndef CONFIG_MACH_TX49XX 802 }, { 803 .start = irq, 804 .flags = IORESOURCE_IRQ, 805 #endif 806 } 807 }; 808 #ifdef CONFIG_MACH_TX49XX 809 struct resource chan_res[] = { 810 { 811 .flags = IORESOURCE_IRQ, 812 } 813 }; 814 #endif 815 struct platform_device *pdev = platform_device_alloc("txx9dmac", id); 816 struct txx9dmac_chan_platform_data cpdata; 817 int i; 818 819 if (!pdev || 820 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || 821 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 822 platform_device_add(pdev)) { 823 platform_device_put(pdev); 824 return; 825 } 826 memset(&cpdata, 0, sizeof(cpdata)); 827 cpdata.dmac_dev = pdev; 828 for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) { 829 #ifdef CONFIG_MACH_TX49XX 830 chan_res[0].start = irq + i; 831 #endif 832 pdev = platform_device_alloc("txx9dmac-chan", 833 id * TXX9_DMA_MAX_NR_CHANNELS + i); 834 if (!pdev || 835 #ifdef CONFIG_MACH_TX49XX 836 platform_device_add_resources(pdev, chan_res, 837 ARRAY_SIZE(chan_res)) || 838 #endif 839 platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) || 840 platform_device_add(pdev)) 841 platform_device_put(pdev); 842 } 843 #endif 844 } 845 846 void __init txx9_aclc_init(unsigned long baseaddr, int irq, 847 unsigned int dmac_id, 848 unsigned int dma_chan_out, 849 unsigned int dma_chan_in) 850 { 851 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC) 852 unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS; 853 struct resource res[] = { 854 { 855 .start = baseaddr, 856 .end = baseaddr + 0x100 - 1, 857 .flags = IORESOURCE_MEM, 858 }, { 859 .start = irq, 860 .flags = IORESOURCE_IRQ, 861 }, { 862 .name = "txx9dmac-chan", 863 .start = dma_base + dma_chan_out, 864 .flags = IORESOURCE_DMA, 865 }, { 866 .name = "txx9dmac-chan", 867 .start = dma_base + dma_chan_in, 868 .flags = IORESOURCE_DMA, 869 } 870 }; 871 struct platform_device *pdev = 872 platform_device_alloc("txx9aclc-ac97", -1); 873 874 if (!pdev || 875 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || 876 platform_device_add(pdev)) 877 platform_device_put(pdev); 878 #endif 879 } 880 881 static struct bus_type txx9_sramc_subsys = { 882 .name = "txx9_sram", 883 .dev_name = "txx9_sram", 884 }; 885 886 struct txx9_sramc_dev { 887 struct device dev; 888 struct bin_attribute bindata_attr; 889 void __iomem *base; 890 }; 891 892 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj, 893 struct bin_attribute *bin_attr, 894 char *buf, loff_t pos, size_t size) 895 { 896 struct txx9_sramc_dev *dev = bin_attr->private; 897 size_t ramsize = bin_attr->size; 898 899 if (pos >= ramsize) 900 return 0; 901 if (pos + size > ramsize) 902 size = ramsize - pos; 903 memcpy_fromio(buf, dev->base + pos, size); 904 return size; 905 } 906 907 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj, 908 struct bin_attribute *bin_attr, 909 char *buf, loff_t pos, size_t size) 910 { 911 struct txx9_sramc_dev *dev = bin_attr->private; 912 size_t ramsize = bin_attr->size; 913 914 if (pos >= ramsize) 915 return 0; 916 if (pos + size > ramsize) 917 size = ramsize - pos; 918 memcpy_toio(dev->base + pos, buf, size); 919 return size; 920 } 921 922 static void txx9_device_release(struct device *dev) 923 { 924 struct txx9_sramc_dev *tdev; 925 926 tdev = container_of(dev, struct txx9_sramc_dev, dev); 927 kfree(tdev); 928 } 929 930 void __init txx9_sramc_init(struct resource *r) 931 { 932 struct txx9_sramc_dev *dev; 933 size_t size; 934 int err; 935 936 err = subsys_system_register(&txx9_sramc_subsys, NULL); 937 if (err) 938 return; 939 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 940 if (!dev) 941 return; 942 size = resource_size(r); 943 dev->base = ioremap(r->start, size); 944 if (!dev->base) { 945 kfree(dev); 946 return; 947 } 948 dev->dev.release = &txx9_device_release; 949 dev->dev.bus = &txx9_sramc_subsys; 950 sysfs_bin_attr_init(&dev->bindata_attr); 951 dev->bindata_attr.attr.name = "bindata"; 952 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR; 953 dev->bindata_attr.read = txx9_sram_read; 954 dev->bindata_attr.write = txx9_sram_write; 955 dev->bindata_attr.size = size; 956 dev->bindata_attr.private = dev; 957 err = device_register(&dev->dev); 958 if (err) 959 goto exit_put; 960 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr); 961 if (err) { 962 device_unregister(&dev->dev); 963 iounmap(dev->base); 964 kfree(dev); 965 } 966 return; 967 exit_put: 968 put_device(&dev->dev); 969 return; 970 } 971