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/export.h> 18 #include <linux/clk-provider.h> 19 #include <linux/clkdev.h> 20 #include <linux/err.h> 21 #include <linux/gpio/driver.h> 22 #include <linux/platform_device.h> 23 #include <linux/platform_data/txx9/ndfmc.h> 24 #include <linux/serial_core.h> 25 #include <linux/mtd/physmap.h> 26 #include <linux/leds.h> 27 #include <linux/device.h> 28 #include <linux/slab.h> 29 #include <linux/io.h> 30 #include <linux/irq.h> 31 #include <asm/bootinfo.h> 32 #include <asm/idle.h> 33 #include <asm/time.h> 34 #include <asm/reboot.h> 35 #include <asm/r4kcache.h> 36 #include <asm/setup.h> 37 #include <asm/txx9/generic.h> 38 #include <asm/txx9/pci.h> 39 #include <asm/txx9tmr.h> 40 #include <asm/txx9/dmac.h> 41 #ifdef CONFIG_CPU_TX49XX 42 #include <asm/txx9/tx4938.h> 43 #endif 44 45 /* EBUSC settings of TX4927, etc. */ 46 struct resource txx9_ce_res[8]; 47 static char txx9_ce_res_name[8][4]; /* "CEn" */ 48 49 /* pcode, internal register */ 50 unsigned int txx9_pcode; 51 char txx9_pcode_str[8]; 52 static struct resource txx9_reg_res = { 53 .name = txx9_pcode_str, 54 .flags = IORESOURCE_MEM, 55 }; 56 void __init 57 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) 58 { 59 int i; 60 61 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) { 62 sprintf(txx9_ce_res_name[i], "CE%d", i); 63 txx9_ce_res[i].flags = IORESOURCE_MEM; 64 txx9_ce_res[i].name = txx9_ce_res_name[i]; 65 } 66 67 txx9_pcode = pcode; 68 sprintf(txx9_pcode_str, "TX%x", pcode); 69 if (base) { 70 txx9_reg_res.start = base & 0xfffffffffULL; 71 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1); 72 request_resource(&iomem_resource, &txx9_reg_res); 73 } 74 } 75 76 /* clocks */ 77 unsigned int txx9_master_clock; 78 unsigned int txx9_cpu_clock; 79 unsigned int txx9_gbus_clock; 80 81 int txx9_ccfg_toeon __initdata = 1; 82 83 #define BOARD_VEC(board) extern struct txx9_board_vec board; 84 #include <asm/txx9/boards.h> 85 #undef BOARD_VEC 86 87 struct txx9_board_vec *txx9_board_vec __initdata; 88 static char txx9_system_type[32]; 89 90 static struct txx9_board_vec *board_vecs[] __initdata = { 91 #define BOARD_VEC(board) &board, 92 #include <asm/txx9/boards.h> 93 #undef BOARD_VEC 94 }; 95 96 static struct txx9_board_vec *__init find_board_byname(const char *name) 97 { 98 int i; 99 100 /* search board_vecs table */ 101 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) { 102 if (strstr(board_vecs[i]->system, name)) 103 return board_vecs[i]; 104 } 105 return NULL; 106 } 107 108 static void __init prom_init_cmdline(void) 109 { 110 int argc; 111 int *argv32; 112 int i; /* Always ignore the "-c" at argv[0] */ 113 114 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) { 115 /* 116 * argc is not a valid number, or argv32 is not a valid 117 * pointer 118 */ 119 argc = 0; 120 argv32 = NULL; 121 } else { 122 argc = (int)fw_arg0; 123 argv32 = (int *)fw_arg1; 124 } 125 126 arcs_cmdline[0] = '\0'; 127 128 for (i = 1; i < argc; i++) { 129 char *str = (char *)(long)argv32[i]; 130 if (i != 1) 131 strcat(arcs_cmdline, " "); 132 if (strchr(str, ' ')) { 133 strcat(arcs_cmdline, "\""); 134 strcat(arcs_cmdline, str); 135 strcat(arcs_cmdline, "\""); 136 } else 137 strcat(arcs_cmdline, str); 138 } 139 } 140 141 static int txx9_ic_disable __initdata; 142 static int txx9_dc_disable __initdata; 143 144 #if defined(CONFIG_CPU_TX49XX) 145 /* flush all cache on very early stage (before 4k_cache_init) */ 146 static void __init early_flush_dcache(void) 147 { 148 unsigned int conf = read_c0_config(); 149 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6)); 150 unsigned int linesz = 32; 151 unsigned long addr, end; 152 153 end = INDEX_BASE + dc_size / 4; 154 /* 4way, waybit=0 */ 155 for (addr = INDEX_BASE; addr < end; addr += linesz) { 156 cache_op(Index_Writeback_Inv_D, addr | 0); 157 cache_op(Index_Writeback_Inv_D, addr | 1); 158 cache_op(Index_Writeback_Inv_D, addr | 2); 159 cache_op(Index_Writeback_Inv_D, addr | 3); 160 } 161 } 162 163 static void __init txx9_cache_fixup(void) 164 { 165 unsigned int conf; 166 167 conf = read_c0_config(); 168 /* flush and disable */ 169 if (txx9_ic_disable) { 170 conf |= TX49_CONF_IC; 171 write_c0_config(conf); 172 } 173 if (txx9_dc_disable) { 174 early_flush_dcache(); 175 conf |= TX49_CONF_DC; 176 write_c0_config(conf); 177 } 178 179 /* enable cache */ 180 conf = read_c0_config(); 181 if (!txx9_ic_disable) 182 conf &= ~TX49_CONF_IC; 183 if (!txx9_dc_disable) 184 conf &= ~TX49_CONF_DC; 185 write_c0_config(conf); 186 187 if (conf & TX49_CONF_IC) 188 pr_info("TX49XX I-Cache disabled.\n"); 189 if (conf & TX49_CONF_DC) 190 pr_info("TX49XX D-Cache disabled.\n"); 191 } 192 #else 193 static inline void txx9_cache_fixup(void) 194 { 195 } 196 #endif 197 198 static void __init preprocess_cmdline(void) 199 { 200 static char cmdline[COMMAND_LINE_SIZE] __initdata; 201 char *s; 202 203 strcpy(cmdline, arcs_cmdline); 204 s = cmdline; 205 arcs_cmdline[0] = '\0'; 206 while (s && *s) { 207 char *str = strsep(&s, " "); 208 if (strncmp(str, "board=", 6) == 0) { 209 txx9_board_vec = find_board_byname(str + 6); 210 continue; 211 } else if (strncmp(str, "masterclk=", 10) == 0) { 212 unsigned int val; 213 if (kstrtouint(str + 10, 10, &val) == 0) 214 txx9_master_clock = val; 215 continue; 216 } else if (strcmp(str, "icdisable") == 0) { 217 txx9_ic_disable = 1; 218 continue; 219 } else if (strcmp(str, "dcdisable") == 0) { 220 txx9_dc_disable = 1; 221 continue; 222 } else if (strcmp(str, "toeoff") == 0) { 223 txx9_ccfg_toeon = 0; 224 continue; 225 } else if (strcmp(str, "toeon") == 0) { 226 txx9_ccfg_toeon = 1; 227 continue; 228 } 229 if (arcs_cmdline[0]) 230 strcat(arcs_cmdline, " "); 231 strcat(arcs_cmdline, str); 232 } 233 234 txx9_cache_fixup(); 235 } 236 237 static void __init select_board(void) 238 { 239 const char *envstr; 240 241 /* first, determine by "board=" argument in preprocess_cmdline() */ 242 if (txx9_board_vec) 243 return; 244 /* next, determine by "board" envvar */ 245 envstr = prom_getenv("board"); 246 if (envstr) { 247 txx9_board_vec = find_board_byname(envstr); 248 if (txx9_board_vec) 249 return; 250 } 251 252 /* select "default" board */ 253 #ifdef CONFIG_CPU_TX49XX 254 switch (TX4938_REV_PCODE()) { 255 #ifdef CONFIG_TOSHIBA_RBTX4927 256 case 0x4927: 257 txx9_board_vec = &rbtx4927_vec; 258 break; 259 case 0x4937: 260 txx9_board_vec = &rbtx4937_vec; 261 break; 262 #endif 263 } 264 #endif 265 } 266 267 void __init prom_init(void) 268 { 269 prom_init_cmdline(); 270 preprocess_cmdline(); 271 select_board(); 272 273 strcpy(txx9_system_type, txx9_board_vec->system); 274 275 txx9_board_vec->prom_init(); 276 } 277 278 const char *get_system_type(void) 279 { 280 return txx9_system_type; 281 } 282 283 const char *__init prom_getenv(const char *name) 284 { 285 const s32 *str; 286 287 if (fw_arg2 < CKSEG0) 288 return NULL; 289 290 str = (const s32 *)fw_arg2; 291 /* YAMON style ("name", "value" pairs) */ 292 while (str[0] && str[1]) { 293 if (!strcmp((const char *)(unsigned long)str[0], name)) 294 return (const char *)(unsigned long)str[1]; 295 str += 2; 296 } 297 return NULL; 298 } 299 300 static void __noreturn txx9_machine_halt(void) 301 { 302 local_irq_disable(); 303 clear_c0_status(ST0_IM); 304 while (1) { 305 if (cpu_wait) { 306 (*cpu_wait)(); 307 if (cpu_has_counter) { 308 /* 309 * Clear counter interrupt while it 310 * breaks WAIT instruction even if 311 * masked. 312 */ 313 write_c0_compare(0); 314 } 315 } 316 } 317 } 318 319 /* Watchdog support */ 320 void __init txx9_wdt_init(unsigned long base) 321 { 322 struct resource res = { 323 .start = base, 324 .end = base + 0x100 - 1, 325 .flags = IORESOURCE_MEM, 326 }; 327 platform_device_register_simple("txx9wdt", -1, &res, 1); 328 } 329 330 void txx9_wdt_now(unsigned long base) 331 { 332 struct txx9_tmr_reg __iomem *tmrptr = 333 ioremap(base, sizeof(struct txx9_tmr_reg)); 334 /* disable watch dog timer */ 335 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr); 336 __raw_writel(0, &tmrptr->tcr); 337 /* kick watchdog */ 338 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr); 339 __raw_writel(1, &tmrptr->cpra); /* immediate */ 340 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG, 341 &tmrptr->tcr); 342 } 343 344 /* SPI support */ 345 void __init txx9_spi_init(int busid, unsigned long base, int irq) 346 { 347 struct resource res[] = { 348 { 349 .start = base, 350 .end = base + 0x20 - 1, 351 .flags = IORESOURCE_MEM, 352 }, { 353 .start = irq, 354 .flags = IORESOURCE_IRQ, 355 }, 356 }; 357 platform_device_register_simple("spi_txx9", busid, 358 res, ARRAY_SIZE(res)); 359 } 360 361 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr) 362 { 363 struct platform_device *pdev = 364 platform_device_alloc("tc35815-mac", id); 365 if (!pdev || 366 platform_device_add_data(pdev, ethaddr, 6) || 367 platform_device_add(pdev)) 368 platform_device_put(pdev); 369 } 370 371 void __init txx9_sio_init(unsigned long baseaddr, int irq, 372 unsigned int line, unsigned int sclk, int nocts) 373 { 374 #ifdef CONFIG_SERIAL_TXX9 375 struct uart_port req; 376 377 memset(&req, 0, sizeof(req)); 378 req.line = line; 379 req.iotype = UPIO_MEM; 380 req.membase = ioremap(baseaddr, 0x24); 381 req.mapbase = baseaddr; 382 req.irq = irq; 383 if (!nocts) 384 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/; 385 if (sclk) { 386 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/; 387 req.uartclk = sclk; 388 } else 389 req.uartclk = TXX9_IMCLK; 390 early_serial_txx9_setup(&req); 391 #endif /* CONFIG_SERIAL_TXX9 */ 392 } 393 394 #ifdef CONFIG_EARLY_PRINTK 395 static void null_prom_putchar(char c) 396 { 397 } 398 void (*txx9_prom_putchar)(char c) = null_prom_putchar; 399 400 void prom_putchar(char c) 401 { 402 txx9_prom_putchar(c); 403 } 404 405 static void __iomem *early_txx9_sio_port; 406 407 static void early_txx9_sio_putchar(char c) 408 { 409 #define TXX9_SICISR 0x0c 410 #define TXX9_SITFIFO 0x1c 411 #define TXX9_SICISR_TXALS 0x00000002 412 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) & 413 TXX9_SICISR_TXALS)) 414 ; 415 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO); 416 } 417 418 void __init txx9_sio_putchar_init(unsigned long baseaddr) 419 { 420 early_txx9_sio_port = ioremap(baseaddr, 0x24); 421 txx9_prom_putchar = early_txx9_sio_putchar; 422 } 423 #endif /* CONFIG_EARLY_PRINTK */ 424 425 /* wrappers */ 426 void __init plat_mem_setup(void) 427 { 428 ioport_resource.start = 0; 429 ioport_resource.end = ~0UL; /* no limit */ 430 iomem_resource.start = 0; 431 iomem_resource.end = ~0UL; /* no limit */ 432 433 /* fallback restart/halt routines */ 434 _machine_restart = (void (*)(char *))txx9_machine_halt; 435 _machine_halt = txx9_machine_halt; 436 pm_power_off = txx9_machine_halt; 437 438 #ifdef CONFIG_PCI 439 pcibios_plat_setup = txx9_pcibios_setup; 440 #endif 441 txx9_board_vec->mem_setup(); 442 } 443 444 void __init arch_init_irq(void) 445 { 446 txx9_board_vec->irq_setup(); 447 } 448 449 void __init plat_time_init(void) 450 { 451 #ifdef CONFIG_CPU_TX49XX 452 mips_hpt_frequency = txx9_cpu_clock / 2; 453 #endif 454 txx9_board_vec->time_init(); 455 } 456 457 static void txx9_clk_init(void) 458 { 459 struct clk_hw *hw; 460 int error; 461 462 hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock); 463 if (IS_ERR(hw)) { 464 error = PTR_ERR(hw); 465 goto fail; 466 } 467 468 hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2); 469 error = clk_hw_register_clkdev(hw, "imbus_clk", NULL); 470 if (error) 471 goto fail; 472 473 #ifdef CONFIG_CPU_TX49XX 474 if (TX4938_REV_PCODE() == 0x4938) { 475 hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4); 476 error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL); 477 if (error) 478 goto fail; 479 } 480 #endif 481 482 return; 483 484 fail: 485 pr_err("Failed to register clocks: %d\n", error); 486 } 487 488 static int __init _txx9_arch_init(void) 489 { 490 txx9_clk_init(); 491 492 if (txx9_board_vec->arch_init) 493 txx9_board_vec->arch_init(); 494 return 0; 495 } 496 arch_initcall(_txx9_arch_init); 497 498 static int __init _txx9_device_init(void) 499 { 500 if (txx9_board_vec->device_init) 501 txx9_board_vec->device_init(); 502 return 0; 503 } 504 device_initcall(_txx9_device_init); 505 506 int (*txx9_irq_dispatch)(int pending); 507 asmlinkage void plat_irq_dispatch(void) 508 { 509 int pending = read_c0_status() & read_c0_cause() & ST0_IM; 510 int irq = txx9_irq_dispatch(pending); 511 512 if (likely(irq >= 0)) 513 do_IRQ(irq); 514 else 515 spurious_interrupt(); 516 } 517 518 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */ 519 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B 520 static unsigned long __swizzle_addr_none(unsigned long port) 521 { 522 return port; 523 } 524 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none; 525 EXPORT_SYMBOL(__swizzle_addr_b); 526 #endif 527 528 void __init txx9_physmap_flash_init(int no, unsigned long addr, 529 unsigned long size, 530 const struct physmap_flash_data *pdata) 531 { 532 #if IS_ENABLED(CONFIG_MTD_PHYSMAP) 533 struct resource res = { 534 .start = addr, 535 .end = addr + size - 1, 536 .flags = IORESOURCE_MEM, 537 }; 538 struct platform_device *pdev; 539 static struct mtd_partition parts[2]; 540 struct physmap_flash_data pdata_part; 541 542 /* If this area contained boot area, make separate partition */ 543 if (pdata->nr_parts == 0 && !pdata->parts && 544 addr < 0x1fc00000 && addr + size > 0x1fc00000 && 545 !parts[0].name) { 546 parts[0].name = "boot"; 547 parts[0].offset = 0x1fc00000 - addr; 548 parts[0].size = addr + size - 0x1fc00000; 549 parts[1].name = "user"; 550 parts[1].offset = 0; 551 parts[1].size = 0x1fc00000 - addr; 552 pdata_part = *pdata; 553 pdata_part.nr_parts = ARRAY_SIZE(parts); 554 pdata_part.parts = parts; 555 pdata = &pdata_part; 556 } 557 558 pdev = platform_device_alloc("physmap-flash", no); 559 if (!pdev || 560 platform_device_add_resources(pdev, &res, 1) || 561 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 562 platform_device_add(pdev)) 563 platform_device_put(pdev); 564 #endif 565 } 566 567 void __init txx9_ndfmc_init(unsigned long baseaddr, 568 const struct txx9ndfmc_platform_data *pdata) 569 { 570 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC) 571 struct resource res = { 572 .start = baseaddr, 573 .end = baseaddr + 0x1000 - 1, 574 .flags = IORESOURCE_MEM, 575 }; 576 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1); 577 578 if (!pdev || 579 platform_device_add_resources(pdev, &res, 1) || 580 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 581 platform_device_add(pdev)) 582 platform_device_put(pdev); 583 #endif 584 } 585 586 #if IS_ENABLED(CONFIG_LEDS_GPIO) 587 static DEFINE_SPINLOCK(txx9_iocled_lock); 588 589 #define TXX9_IOCLED_MAXLEDS 8 590 591 struct txx9_iocled_data { 592 struct gpio_chip chip; 593 u8 cur_val; 594 void __iomem *mmioaddr; 595 struct gpio_led_platform_data pdata; 596 struct gpio_led leds[TXX9_IOCLED_MAXLEDS]; 597 char names[TXX9_IOCLED_MAXLEDS][32]; 598 }; 599 600 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset) 601 { 602 struct txx9_iocled_data *data = gpiochip_get_data(chip); 603 return !!(data->cur_val & (1 << offset)); 604 } 605 606 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset, 607 int value) 608 { 609 struct txx9_iocled_data *data = gpiochip_get_data(chip); 610 unsigned long flags; 611 spin_lock_irqsave(&txx9_iocled_lock, flags); 612 if (value) 613 data->cur_val |= 1 << offset; 614 else 615 data->cur_val &= ~(1 << offset); 616 writeb(data->cur_val, data->mmioaddr); 617 mmiowb(); 618 spin_unlock_irqrestore(&txx9_iocled_lock, flags); 619 } 620 621 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset) 622 { 623 return 0; 624 } 625 626 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset, 627 int value) 628 { 629 txx9_iocled_set(chip, offset, value); 630 return 0; 631 } 632 633 void __init txx9_iocled_init(unsigned long baseaddr, 634 int basenum, unsigned int num, int lowactive, 635 const char *color, char **deftriggers) 636 { 637 struct txx9_iocled_data *iocled; 638 struct platform_device *pdev; 639 int i; 640 static char *default_triggers[] __initdata = { 641 "heartbeat", 642 "disk-activity", 643 "nand-disk", 644 NULL, 645 }; 646 647 if (!deftriggers) 648 deftriggers = default_triggers; 649 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL); 650 if (!iocled) 651 return; 652 iocled->mmioaddr = ioremap(baseaddr, 1); 653 if (!iocled->mmioaddr) 654 goto out_free; 655 iocled->chip.get = txx9_iocled_get; 656 iocled->chip.set = txx9_iocled_set; 657 iocled->chip.direction_input = txx9_iocled_dir_in; 658 iocled->chip.direction_output = txx9_iocled_dir_out; 659 iocled->chip.label = "iocled"; 660 iocled->chip.base = basenum; 661 iocled->chip.ngpio = num; 662 if (gpiochip_add_data(&iocled->chip, iocled)) 663 goto out_unmap; 664 if (basenum < 0) 665 basenum = iocled->chip.base; 666 667 pdev = platform_device_alloc("leds-gpio", basenum); 668 if (!pdev) 669 goto out_gpio; 670 iocled->pdata.num_leds = num; 671 iocled->pdata.leds = iocled->leds; 672 for (i = 0; i < num; i++) { 673 struct gpio_led *led = &iocled->leds[i]; 674 snprintf(iocled->names[i], sizeof(iocled->names[i]), 675 "iocled:%s:%u", color, i); 676 led->name = iocled->names[i]; 677 led->gpio = basenum + i; 678 led->active_low = lowactive; 679 if (deftriggers && *deftriggers) 680 led->default_trigger = *deftriggers++; 681 } 682 pdev->dev.platform_data = &iocled->pdata; 683 if (platform_device_add(pdev)) 684 goto out_pdev; 685 return; 686 687 out_pdev: 688 platform_device_put(pdev); 689 out_gpio: 690 gpiochip_remove(&iocled->chip); 691 out_unmap: 692 iounmap(iocled->mmioaddr); 693 out_free: 694 kfree(iocled); 695 } 696 #else /* CONFIG_LEDS_GPIO */ 697 void __init txx9_iocled_init(unsigned long baseaddr, 698 int basenum, unsigned int num, int lowactive, 699 const char *color, char **deftriggers) 700 { 701 } 702 #endif /* CONFIG_LEDS_GPIO */ 703 704 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq, 705 const struct txx9dmac_platform_data *pdata) 706 { 707 #if IS_ENABLED(CONFIG_TXX9_DMAC) 708 struct resource res[] = { 709 { 710 .start = baseaddr, 711 .end = baseaddr + 0x800 - 1, 712 .flags = IORESOURCE_MEM, 713 #ifndef CONFIG_MACH_TX49XX 714 }, { 715 .start = irq, 716 .flags = IORESOURCE_IRQ, 717 #endif 718 } 719 }; 720 #ifdef CONFIG_MACH_TX49XX 721 struct resource chan_res[] = { 722 { 723 .flags = IORESOURCE_IRQ, 724 } 725 }; 726 #endif 727 struct platform_device *pdev = platform_device_alloc("txx9dmac", id); 728 struct txx9dmac_chan_platform_data cpdata; 729 int i; 730 731 if (!pdev || 732 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) || 733 platform_device_add_data(pdev, pdata, sizeof(*pdata)) || 734 platform_device_add(pdev)) { 735 platform_device_put(pdev); 736 return; 737 } 738 memset(&cpdata, 0, sizeof(cpdata)); 739 cpdata.dmac_dev = pdev; 740 for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) { 741 #ifdef CONFIG_MACH_TX49XX 742 chan_res[0].start = irq + i; 743 #endif 744 pdev = platform_device_alloc("txx9dmac-chan", 745 id * TXX9_DMA_MAX_NR_CHANNELS + i); 746 if (!pdev || 747 #ifdef CONFIG_MACH_TX49XX 748 platform_device_add_resources(pdev, chan_res, 749 ARRAY_SIZE(chan_res)) || 750 #endif 751 platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) || 752 platform_device_add(pdev)) 753 platform_device_put(pdev); 754 } 755 #endif 756 } 757 758 void __init txx9_aclc_init(unsigned long baseaddr, int irq, 759 unsigned int dmac_id, 760 unsigned int dma_chan_out, 761 unsigned int dma_chan_in) 762 { 763 } 764 765 static struct bus_type txx9_sramc_subsys = { 766 .name = "txx9_sram", 767 .dev_name = "txx9_sram", 768 }; 769 770 struct txx9_sramc_dev { 771 struct device dev; 772 struct bin_attribute bindata_attr; 773 void __iomem *base; 774 }; 775 776 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj, 777 struct bin_attribute *bin_attr, 778 char *buf, loff_t pos, size_t size) 779 { 780 struct txx9_sramc_dev *dev = bin_attr->private; 781 size_t ramsize = bin_attr->size; 782 783 if (pos >= ramsize) 784 return 0; 785 if (pos + size > ramsize) 786 size = ramsize - pos; 787 memcpy_fromio(buf, dev->base + pos, size); 788 return size; 789 } 790 791 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj, 792 struct bin_attribute *bin_attr, 793 char *buf, loff_t pos, size_t size) 794 { 795 struct txx9_sramc_dev *dev = bin_attr->private; 796 size_t ramsize = bin_attr->size; 797 798 if (pos >= ramsize) 799 return 0; 800 if (pos + size > ramsize) 801 size = ramsize - pos; 802 memcpy_toio(dev->base + pos, buf, size); 803 return size; 804 } 805 806 static void txx9_device_release(struct device *dev) 807 { 808 struct txx9_sramc_dev *tdev; 809 810 tdev = container_of(dev, struct txx9_sramc_dev, dev); 811 kfree(tdev); 812 } 813 814 void __init txx9_sramc_init(struct resource *r) 815 { 816 struct txx9_sramc_dev *dev; 817 size_t size; 818 int err; 819 820 err = subsys_system_register(&txx9_sramc_subsys, NULL); 821 if (err) 822 return; 823 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 824 if (!dev) 825 return; 826 size = resource_size(r); 827 dev->base = ioremap(r->start, size); 828 if (!dev->base) { 829 kfree(dev); 830 return; 831 } 832 dev->dev.release = &txx9_device_release; 833 dev->dev.bus = &txx9_sramc_subsys; 834 sysfs_bin_attr_init(&dev->bindata_attr); 835 dev->bindata_attr.attr.name = "bindata"; 836 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR; 837 dev->bindata_attr.read = txx9_sram_read; 838 dev->bindata_attr.write = txx9_sram_write; 839 dev->bindata_attr.size = size; 840 dev->bindata_attr.private = dev; 841 err = device_register(&dev->dev); 842 if (err) 843 goto exit_put; 844 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr); 845 if (err) { 846 iounmap(dev->base); 847 device_unregister(&dev->dev); 848 } 849 return; 850 exit_put: 851 iounmap(dev->base); 852 put_device(&dev->dev); 853 } 854