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/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/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 /* GPIO support */
 121
 122 #ifdef CONFIG_GPIOLIB
 123 int gpio_to_irq(unsigned gpio)
 124 {
 125         return -EINVAL;
 126 }
 127 EXPORT_SYMBOL(gpio_to_irq);
 128
 129 int irq_to_gpio(unsigned irq)
 130 {
 131         return -EINVAL;
 132 }
 133 EXPORT_SYMBOL(irq_to_gpio);
 134 #endif
 135
 136 #define BOARD_VEC(board)        extern struct txx9_board_vec board;
 137 #include <asm/txx9/boards.h>
 138 #undef BOARD_VEC
 139
 140 struct txx9_board_vec *txx9_board_vec __initdata;
 141 static char txx9_system_type[32];
 142
 143 static struct txx9_board_vec *board_vecs[] __initdata = {
 144 #define BOARD_VEC(board)        &board,
 145 #include <asm/txx9/boards.h>
 146 #undef BOARD_VEC
 147 };
 148
 149 static struct txx9_board_vec *__init find_board_byname(const char *name)
 150 {
 151         int i;
 152
 153         /* search board_vecs table */
 154         for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
 155                 if (strstr(board_vecs[i]->system, name))
 156                         return board_vecs[i];
 157         }
 158         return NULL;
 159 }
 160
 161 static void __init prom_init_cmdline(void)
 162 {
 163         int argc;
 164         int *argv32;
 165         int i;                  /* Always ignore the "-c" at argv[0] */
 166
 167         if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
 168                 /*
 169                  * argc is not a valid number, or argv32 is not a valid
 170                  * pointer
 171                  */
 172                 argc = 0;
 173                 argv32 = NULL;
 174         } else {
 175                 argc = (int)fw_arg0;
 176                 argv32 = (int *)fw_arg1;
 177         }
 178
 179         arcs_cmdline[0] = '\0';
 180
 181         for (i = 1; i < argc; i++) {
 182                 char *str = (char *)(long)argv32[i];
 183                 if (i != 1)
 184                         strcat(arcs_cmdline, " ");
 185                 if (strchr(str, ' ')) {
 186                         strcat(arcs_cmdline, "\"");
 187                         strcat(arcs_cmdline, str);
 188                         strcat(arcs_cmdline, "\"");
 189                 } else
 190                         strcat(arcs_cmdline, str);
 191         }
 192 }
 193
 194 static int txx9_ic_disable __initdata;
 195 static int txx9_dc_disable __initdata;
 196
 197 #if defined(CONFIG_CPU_TX49XX)
 198 /* flush all cache on very early stage (before 4k_cache_init) */
 199 static void __init early_flush_dcache(void)
 200 {
 201         unsigned int conf = read_c0_config();
 202         unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
 203         unsigned int linesz = 32;
 204         unsigned long addr, end;
 205
 206         end = INDEX_BASE + dc_size / 4;
 207         /* 4way, waybit=0 */
 208         for (addr = INDEX_BASE; addr < end; addr += linesz) {
 209                 cache_op(Index_Writeback_Inv_D, addr | 0);
 210                 cache_op(Index_Writeback_Inv_D, addr | 1);
 211                 cache_op(Index_Writeback_Inv_D, addr | 2);
 212                 cache_op(Index_Writeback_Inv_D, addr | 3);
 213         }
 214 }
 215
 216 static void __init txx9_cache_fixup(void)
 217 {
 218         unsigned int conf;
 219
 220         conf = read_c0_config();
 221         /* flush and disable */
 222         if (txx9_ic_disable) {
 223                 conf |= TX49_CONF_IC;
 224                 write_c0_config(conf);
 225         }
 226         if (txx9_dc_disable) {
 227                 early_flush_dcache();
 228                 conf |= TX49_CONF_DC;
 229                 write_c0_config(conf);
 230         }
 231
 232         /* enable cache */
 233         conf = read_c0_config();
 234         if (!txx9_ic_disable)
 235                 conf &= ~TX49_CONF_IC;
 236         if (!txx9_dc_disable)
 237                 conf &= ~TX49_CONF_DC;
 238         write_c0_config(conf);
 239
 240         if (conf & TX49_CONF_IC)
 241                 pr_info("TX49XX I-Cache disabled.\n");
 242         if (conf & TX49_CONF_DC)
 243                 pr_info("TX49XX D-Cache disabled.\n");
 244 }
 245 #elif defined(CONFIG_CPU_TX39XX)
 246 /* flush all cache on very early stage (before tx39_cache_init) */
 247 static void __init early_flush_dcache(void)
 248 {
 249         unsigned int conf = read_c0_config();
 250         unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
 251                                            TX39_CONF_DCS_SHIFT));
 252         unsigned int linesz = 16;
 253         unsigned long addr, end;
 254
 255         end = INDEX_BASE + dc_size / 2;
 256         /* 2way, waybit=0 */
 257         for (addr = INDEX_BASE; addr < end; addr += linesz) {
 258                 cache_op(Index_Writeback_Inv_D, addr | 0);
 259                 cache_op(Index_Writeback_Inv_D, addr | 1);
 260         }
 261 }
 262
 263 static void __init txx9_cache_fixup(void)
 264 {
 265         unsigned int conf;
 266
 267         conf = read_c0_config();
 268         /* flush and disable */
 269         if (txx9_ic_disable) {
 270                 conf &= ~TX39_CONF_ICE;
 271                 write_c0_config(conf);
 272         }
 273         if (txx9_dc_disable) {
 274                 early_flush_dcache();
 275                 conf &= ~TX39_CONF_DCE;
 276                 write_c0_config(conf);
 277         }
 278
 279         /* enable cache */
 280         conf = read_c0_config();
 281         if (!txx9_ic_disable)
 282                 conf |= TX39_CONF_ICE;
 283         if (!txx9_dc_disable)
 284                 conf |= TX39_CONF_DCE;
 285         write_c0_config(conf);
 286
 287         if (!(conf & TX39_CONF_ICE))
 288                 pr_info("TX39XX I-Cache disabled.\n");
 289         if (!(conf & TX39_CONF_DCE))
 290                 pr_info("TX39XX D-Cache disabled.\n");
 291 }
 292 #else
 293 static inline void txx9_cache_fixup(void)
 294 {
 295 }
 296 #endif
 297
 298 static void __init preprocess_cmdline(void)
 299 {
 300         static char cmdline[COMMAND_LINE_SIZE] __initdata;
 301         char *s;
 302
 303         strcpy(cmdline, arcs_cmdline);
 304         s = cmdline;
 305         arcs_cmdline[0] = '\0';
 306         while (s && *s) {
 307                 char *str = strsep(&s, " ");
 308                 if (strncmp(str, "board=", 6) == 0) {
 309                         txx9_board_vec = find_board_byname(str + 6);
 310                         continue;
 311                 } else if (strncmp(str, "masterclk=", 10) == 0) {
 312                         unsigned long val;
 313                         if (strict_strtoul(str + 10, 10, &val) == 0)
 314                                 txx9_master_clock = val;
 315                         continue;
 316                 } else if (strcmp(str, "icdisable") == 0) {
 317                         txx9_ic_disable = 1;
 318                         continue;
 319                 } else if (strcmp(str, "dcdisable") == 0) {
 320                         txx9_dc_disable = 1;
 321                         continue;
 322                 } else if (strcmp(str, "toeoff") == 0) {
 323                         txx9_ccfg_toeon = 0;
 324                         continue;
 325                 } else if (strcmp(str, "toeon") == 0) {
 326                         txx9_ccfg_toeon = 1;
 327                         continue;
 328                 }
 329                 if (arcs_cmdline[0])
 330                         strcat(arcs_cmdline, " ");
 331                 strcat(arcs_cmdline, str);
 332         }
 333
 334         txx9_cache_fixup();
 335 }
 336
 337 static void __init select_board(void)
 338 {
 339         const char *envstr;
 340
 341         /* first, determine by "board=" argument in preprocess_cmdline() */
 342         if (txx9_board_vec)
 343                 return;
 344         /* next, determine by "board" envvar */
 345         envstr = prom_getenv("board");
 346         if (envstr) {
 347                 txx9_board_vec = find_board_byname(envstr);
 348                 if (txx9_board_vec)
 349                         return;
 350         }
 351
 352         /* select "default" board */
 353 #ifdef CONFIG_CPU_TX39XX
 354         txx9_board_vec = &jmr3927_vec;
 355 #endif
 356 #ifdef CONFIG_CPU_TX49XX
 357         switch (TX4938_REV_PCODE()) {
 358 #ifdef CONFIG_TOSHIBA_RBTX4927
 359         case 0x4927:
 360                 txx9_board_vec = &rbtx4927_vec;
 361                 break;
 362         case 0x4937:
 363                 txx9_board_vec = &rbtx4937_vec;
 364                 break;
 365 #endif
 366 #ifdef CONFIG_TOSHIBA_RBTX4938
 367         case 0x4938:
 368                 txx9_board_vec = &rbtx4938_vec;
 369                 break;
 370 #endif
 371 #ifdef CONFIG_TOSHIBA_RBTX4939
 372         case 0x4939:
 373                 txx9_board_vec = &rbtx4939_vec;
 374                 break;
 375 #endif
 376         }
 377 #endif
 378 }
 379
 380 void __init prom_init(void)
 381 {
 382         prom_init_cmdline();
 383         preprocess_cmdline();
 384         select_board();
 385
 386         strcpy(txx9_system_type, txx9_board_vec->system);
 387
 388         txx9_board_vec->prom_init();
 389 }
 390
 391 void __init prom_free_prom_memory(void)
 392 {
 393         unsigned long saddr = PAGE_SIZE;
 394         unsigned long eaddr = __pa_symbol(&_text);
 395
 396         if (saddr < eaddr)
 397                 free_init_pages("prom memory", saddr, eaddr);
 398 }
 399
 400 const char *get_system_type(void)
 401 {
 402         return txx9_system_type;
 403 }
 404
 405 const char *__init prom_getenv(const char *name)
 406 {
 407         const s32 *str;
 408
 409         if (fw_arg2 < CKSEG0)
 410                 return NULL;
 411
 412         str = (const s32 *)fw_arg2;
 413         /* YAMON style ("name", "value" pairs) */
 414         while (str[0] && str[1]) {
 415                 if (!strcmp((const char *)(unsigned long)str[0], name))
 416                         return (const char *)(unsigned long)str[1];
 417                 str += 2;
 418         }
 419         return NULL;
 420 }
 421
 422 static void __noreturn txx9_machine_halt(void)
 423 {
 424         local_irq_disable();
 425         clear_c0_status(ST0_IM);
 426         while (1) {
 427                 if (cpu_wait) {
 428                         (*cpu_wait)();
 429                         if (cpu_has_counter) {
 430                                 /*
 431                                  * Clear counter interrupt while it
 432                                  * breaks WAIT instruction even if
 433                                  * masked.
 434                                  */
 435                                 write_c0_compare(0);
 436                         }
 437                 }
 438         }
 439 }
 440
 441 /* Watchdog support */
 442 void __init txx9_wdt_init(unsigned long base)
 443 {
 444         struct resource res = {
 445                 .start  = base,
 446                 .end    = base + 0x100 - 1,
 447                 .flags  = IORESOURCE_MEM,
 448         };
 449         platform_device_register_simple("txx9wdt", -1, &res, 1);
 450 }
 451
 452 void txx9_wdt_now(unsigned long base)
 453 {
 454         struct txx9_tmr_reg __iomem *tmrptr =
 455                 ioremap(base, sizeof(struct txx9_tmr_reg));
 456         /* disable watch dog timer */
 457         __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
 458         __raw_writel(0, &tmrptr->tcr);
 459         /* kick watchdog */
 460         __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
 461         __raw_writel(1, &tmrptr->cpra); /* immediate */
 462         __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
 463                      &tmrptr->tcr);
 464 }
 465
 466 /* SPI support */
 467 void __init txx9_spi_init(int busid, unsigned long base, int irq)
 468 {
 469         struct resource res[] = {
 470                 {
 471                         .start  = base,
 472                         .end    = base + 0x20 - 1,
 473                         .flags  = IORESOURCE_MEM,
 474                 }, {
 475                         .start  = irq,
 476                         .flags  = IORESOURCE_IRQ,
 477                 },
 478         };
 479         platform_device_register_simple("spi_txx9", busid,
 480                                         res, ARRAY_SIZE(res));
 481 }
 482
 483 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
 484 {
 485         struct platform_device *pdev =
 486                 platform_device_alloc("tc35815-mac", id);
 487         if (!pdev ||
 488             platform_device_add_data(pdev, ethaddr, 6) ||
 489             platform_device_add(pdev))
 490                 platform_device_put(pdev);
 491 }
 492
 493 void __init txx9_sio_init(unsigned long baseaddr, int irq,
 494                           unsigned int line, unsigned int sclk, int nocts)
 495 {
 496 #ifdef CONFIG_SERIAL_TXX9
 497         struct uart_port req;
 498
 499         memset(&req, 0, sizeof(req));
 500         req.line = line;
 501         req.iotype = UPIO_MEM;
 502         req.membase = ioremap(baseaddr, 0x24);
 503         req.mapbase = baseaddr;
 504         req.irq = irq;
 505         if (!nocts)
 506                 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
 507         if (sclk) {
 508                 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
 509                 req.uartclk = sclk;
 510         } else
 511                 req.uartclk = TXX9_IMCLK;
 512         early_serial_txx9_setup(&req);
 513 #endif /* CONFIG_SERIAL_TXX9 */
 514 }
 515
 516 #ifdef CONFIG_EARLY_PRINTK
 517 static void null_prom_putchar(char c)
 518 {
 519 }
 520 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
 521
 522 void prom_putchar(char c)
 523 {
 524         txx9_prom_putchar(c);
 525 }
 526
 527 static void __iomem *early_txx9_sio_port;
 528
 529 static void early_txx9_sio_putchar(char c)
 530 {
 531 #define TXX9_SICISR     0x0c
 532 #define TXX9_SITFIFO    0x1c
 533 #define TXX9_SICISR_TXALS       0x00000002
 534         while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
 535                  TXX9_SICISR_TXALS))
 536                 ;
 537         __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
 538 }
 539
 540 void __init txx9_sio_putchar_init(unsigned long baseaddr)
 541 {
 542         early_txx9_sio_port = ioremap(baseaddr, 0x24);
 543         txx9_prom_putchar = early_txx9_sio_putchar;
 544 }
 545 #endif /* CONFIG_EARLY_PRINTK */
 546
 547 /* wrappers */
 548 void __init plat_mem_setup(void)
 549 {
 550         ioport_resource.start = 0;
 551         ioport_resource.end = ~0UL;     /* no limit */
 552         iomem_resource.start = 0;
 553         iomem_resource.end = ~0UL;      /* no limit */
 554
 555         /* fallback restart/halt routines */
 556         _machine_restart = (void (*)(char *))txx9_machine_halt;
 557         _machine_halt = txx9_machine_halt;
 558         pm_power_off = txx9_machine_halt;
 559
 560 #ifdef CONFIG_PCI
 561         pcibios_plat_setup = txx9_pcibios_setup;
 562 #endif
 563         txx9_board_vec->mem_setup();
 564 }
 565
 566 void __init arch_init_irq(void)
 567 {
 568         txx9_board_vec->irq_setup();
 569 }
 570
 571 void __init plat_time_init(void)
 572 {
 573 #ifdef CONFIG_CPU_TX49XX
 574         mips_hpt_frequency = txx9_cpu_clock / 2;
 575 #endif
 576         txx9_board_vec->time_init();
 577 }
 578
 579 static int __init _txx9_arch_init(void)
 580 {
 581         if (txx9_board_vec->arch_init)
 582                 txx9_board_vec->arch_init();
 583         return 0;
 584 }
 585 arch_initcall(_txx9_arch_init);
 586
 587 static int __init _txx9_device_init(void)
 588 {
 589         if (txx9_board_vec->device_init)
 590                 txx9_board_vec->device_init();
 591         return 0;
 592 }
 593 device_initcall(_txx9_device_init);
 594
 595 int (*txx9_irq_dispatch)(int pending);
 596 asmlinkage void plat_irq_dispatch(void)
 597 {
 598         int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 599         int irq = txx9_irq_dispatch(pending);
 600
 601         if (likely(irq >= 0))
 602                 do_IRQ(irq);
 603         else
 604                 spurious_interrupt();
 605 }
 606
 607 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
 608 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
 609 static unsigned long __swizzle_addr_none(unsigned long port)
 610 {
 611         return port;
 612 }
 613 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
 614 EXPORT_SYMBOL(__swizzle_addr_b);
 615 #endif
 616
 617 #ifdef NEEDS_TXX9_IOSWABW
 618 static u16 ioswabw_default(volatile u16 *a, u16 x)
 619 {
 620         return le16_to_cpu(x);
 621 }
 622 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
 623 {
 624         return x;
 625 }
 626 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
 627 EXPORT_SYMBOL(ioswabw);
 628 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
 629 EXPORT_SYMBOL(__mem_ioswabw);
 630 #endif
 631
 632 void __init txx9_physmap_flash_init(int no, unsigned long addr,
 633                                     unsigned long size,
 634                                     const struct physmap_flash_data *pdata)
 635 {
 636 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
 637         struct resource res = {
 638                 .start = addr,
 639                 .end = addr + size - 1,
 640                 .flags = IORESOURCE_MEM,
 641         };
 642         struct platform_device *pdev;
 643         static struct mtd_partition parts[2];
 644         struct physmap_flash_data pdata_part;
 645
 646         /* If this area contained boot area, make separate partition */
 647         if (pdata->nr_parts == 0 && !pdata->parts &&
 648             addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
 649             !parts[0].name) {
 650                 parts[0].name = "boot";
 651                 parts[0].offset = 0x1fc00000 - addr;
 652                 parts[0].size = addr + size - 0x1fc00000;
 653                 parts[1].name = "user";
 654                 parts[1].offset = 0;
 655                 parts[1].size = 0x1fc00000 - addr;
 656                 pdata_part = *pdata;
 657                 pdata_part.nr_parts = ARRAY_SIZE(parts);
 658                 pdata_part.parts = parts;
 659                 pdata = &pdata_part;
 660         }
 661
 662         pdev = platform_device_alloc("physmap-flash", no);
 663         if (!pdev ||
 664             platform_device_add_resources(pdev, &res, 1) ||
 665             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 666             platform_device_add(pdev))
 667                 platform_device_put(pdev);
 668 #endif
 669 }
 670
 671 void __init txx9_ndfmc_init(unsigned long baseaddr,
 672                             const struct txx9ndfmc_platform_data *pdata)
 673 {
 674 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
 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 IS_ENABLED(CONFIG_LEDS_GPIO)
 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 IS_ENABLED(CONFIG_TXX9_DMAC)
 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 IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
 870         unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
 871         struct resource res[] = {
 872                 {
 873                         .start = baseaddr,
 874                         .end = baseaddr + 0x100 - 1,
 875                         .flags = IORESOURCE_MEM,
 876                 }, {
 877                         .start = irq,
 878                         .flags = IORESOURCE_IRQ,
 879                 }, {
 880                         .name = "txx9dmac-chan",
 881                         .start = dma_base + dma_chan_out,
 882                         .flags = IORESOURCE_DMA,
 883                 }, {
 884                         .name = "txx9dmac-chan",
 885                         .start = dma_base + dma_chan_in,
 886                         .flags = IORESOURCE_DMA,
 887                 }
 888         };
 889         struct platform_device *pdev =
 890                 platform_device_alloc("txx9aclc-ac97", -1);
 891
 892         if (!pdev ||
 893             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
 894             platform_device_add(pdev))
 895                 platform_device_put(pdev);
 896 #endif
 897 }
 898
 899 static struct bus_type txx9_sramc_subsys = {
 900         .name = "txx9_sram",
 901         .dev_name = "txx9_sram",
 902 };
 903
 904 struct txx9_sramc_dev {
 905         struct device dev;
 906         struct bin_attribute bindata_attr;
 907         void __iomem *base;
 908 };
 909
 910 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
 911                               struct bin_attribute *bin_attr,
 912                               char *buf, loff_t pos, size_t size)
 913 {
 914         struct txx9_sramc_dev *dev = bin_attr->private;
 915         size_t ramsize = bin_attr->size;
 916
 917         if (pos >= ramsize)
 918                 return 0;
 919         if (pos + size > ramsize)
 920                 size = ramsize - pos;
 921         memcpy_fromio(buf, dev->base + pos, size);
 922         return size;
 923 }
 924
 925 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 926                                struct bin_attribute *bin_attr,
 927                                char *buf, loff_t pos, size_t size)
 928 {
 929         struct txx9_sramc_dev *dev = bin_attr->private;
 930         size_t ramsize = bin_attr->size;
 931
 932         if (pos >= ramsize)
 933                 return 0;
 934         if (pos + size > ramsize)
 935                 size = ramsize - pos;
 936         memcpy_toio(dev->base + pos, buf, size);
 937         return size;
 938 }
 939
 940 void __init txx9_sramc_init(struct resource *r)
 941 {
 942         struct txx9_sramc_dev *dev;
 943         size_t size;
 944         int err;
 945
 946         err = subsys_system_register(&txx9_sramc_subsys, NULL);
 947         if (err)
 948                 return;
 949         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 950         if (!dev)
 951                 return;
 952         size = resource_size(r);
 953         dev->base = ioremap(r->start, size);
 954         if (!dev->base)
 955                 goto exit;
 956         dev->dev.bus = &txx9_sramc_subsys;
 957         sysfs_bin_attr_init(&dev->bindata_attr);
 958         dev->bindata_attr.attr.name = "bindata";
 959         dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
 960         dev->bindata_attr.read = txx9_sram_read;
 961         dev->bindata_attr.write = txx9_sram_write;
 962         dev->bindata_attr.size = size;
 963         dev->bindata_attr.private = dev;
 964         err = device_register(&dev->dev);
 965         if (err)
 966                 goto exit;
 967         err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 968         if (err) {
 969                 device_unregister(&dev->dev);
 970                 goto exit;
 971         }
 972         return;
 973 exit:
 974         if (dev) {
 975                 if (dev->base)
 976                         iounmap(dev->base);
 977                 kfree(dev);
 978         }
 979 }