arch/mips/txx9/generic/setup.c

   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 const 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 }