linux/arch/mips/txx9/generic/setup.c
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   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. */
  44struct resource txx9_ce_res[8];
  45static char txx9_ce_res_name[8][4];     /* "CEn" */
  46
  47/* pcode, internal register */
  48unsigned int txx9_pcode;
  49char txx9_pcode_str[8];
  50static struct resource txx9_reg_res = {
  51        .name = txx9_pcode_str,
  52        .flags = IORESOURCE_MEM,
  53};
  54void __init
  55txx9_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 */
  75unsigned int txx9_master_clock;
  76unsigned int txx9_cpu_clock;
  77unsigned int txx9_gbus_clock;
  78
  79#ifdef CONFIG_CPU_TX39XX
  80/* don't enable by default - see errata */
  81int txx9_ccfg_toeon __initdata;
  82#else
  83int txx9_ccfg_toeon __initdata = 1;
  84#endif
  85
  86/* Minimum CLK support */
  87
  88struct 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}
  96EXPORT_SYMBOL(clk_get);
  97
  98int clk_enable(struct clk *clk)
  99{
 100        return 0;
 101}
 102EXPORT_SYMBOL(clk_enable);
 103
 104void clk_disable(struct clk *clk)
 105{
 106}
 107EXPORT_SYMBOL(clk_disable);
 108
 109unsigned long clk_get_rate(struct clk *clk)
 110{
 111        return (unsigned long)clk;
 112}
 113EXPORT_SYMBOL(clk_get_rate);
 114
 115void clk_put(struct clk *clk)
 116{
 117}
 118EXPORT_SYMBOL(clk_put);
 119
 120/* GPIO support */
 121
 122#ifdef CONFIG_GPIOLIB
 123int gpio_to_irq(unsigned gpio)
 124{
 125        return -EINVAL;
 126}
 127EXPORT_SYMBOL(gpio_to_irq);
 128
 129int irq_to_gpio(unsigned irq)
 130{
 131        return -EINVAL;
 132}
 133EXPORT_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
 140struct txx9_board_vec *txx9_board_vec __initdata;
 141static char txx9_system_type[32];
 142
 143static 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
 149static 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
 161static 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
 194static int txx9_ic_disable __initdata;
 195static int txx9_dc_disable __initdata;
 196
 197#if defined(CONFIG_CPU_TX49XX)
 198/* flush all cache on very early stage (before 4k_cache_init) */
 199static 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
 216static 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) */
 247static 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
 263static 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
 293static inline void txx9_cache_fixup(void)
 294{
 295}
 296#endif
 297
 298static 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 int val;
 313                        if (kstrtouint(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
 337static 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_TOSHIBA_JMR3927
 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
 380void __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
 391void __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
 400const char *get_system_type(void)
 401{
 402        return txx9_system_type;
 403}
 404
 405const 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
 422static 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 */
 442void __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
 452void 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 */
 467void __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
 483void __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
 493void __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
 517static void null_prom_putchar(char c)
 518{
 519}
 520void (*txx9_prom_putchar)(char c) = null_prom_putchar;
 521
 522void prom_putchar(char c)
 523{
 524        txx9_prom_putchar(c);
 525}
 526
 527static void __iomem *early_txx9_sio_port;
 528
 529static 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
 540void __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 */
 548void __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
 566void __init arch_init_irq(void)
 567{
 568        txx9_board_vec->irq_setup();
 569}
 570
 571void __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
 579static int __init _txx9_arch_init(void)
 580{
 581        if (txx9_board_vec->arch_init)
 582                txx9_board_vec->arch_init();
 583        return 0;
 584}
 585arch_initcall(_txx9_arch_init);
 586
 587static int __init _txx9_device_init(void)
 588{
 589        if (txx9_board_vec->device_init)
 590                txx9_board_vec->device_init();
 591        return 0;
 592}
 593device_initcall(_txx9_device_init);
 594
 595int (*txx9_irq_dispatch)(int pending);
 596asmlinkage 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
 609static unsigned long __swizzle_addr_none(unsigned long port)
 610{
 611        return port;
 612}
 613unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
 614EXPORT_SYMBOL(__swizzle_addr_b);
 615#endif
 616
 617#ifdef NEEDS_TXX9_IOSWABW
 618static u16 ioswabw_default(volatile u16 *a, u16 x)
 619{
 620        return le16_to_cpu(x);
 621}
 622static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
 623{
 624        return x;
 625}
 626u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
 627EXPORT_SYMBOL(ioswabw);
 628u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
 629EXPORT_SYMBOL(__mem_ioswabw);
 630#endif
 631
 632void __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
 671void __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)
 691static DEFINE_SPINLOCK(txx9_iocled_lock);
 692
 693#define TXX9_IOCLED_MAXLEDS 8
 694
 695struct 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
 704static 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
 711static 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
 727static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
 728{
 729        return 0;
 730}
 731
 732static 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
 739void __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
 793out_pdev:
 794        platform_device_put(pdev);
 795out_gpio:
 796        gpiochip_remove(&iocled->chip);
 797out_unmap:
 798        iounmap(iocled->mmioaddr);
 799out_free:
 800        kfree(iocled);
 801}
 802#else /* CONFIG_LEDS_GPIO */
 803void __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
 810void __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
 864void __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
 899static struct bus_type txx9_sramc_subsys = {
 900        .name = "txx9_sram",
 901        .dev_name = "txx9_sram",
 902};
 903
 904struct txx9_sramc_dev {
 905        struct device dev;
 906        struct bin_attribute bindata_attr;
 907        void __iomem *base;
 908};
 909
 910static 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
 925static 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
 940static void txx9_device_release(struct device *dev)
 941{
 942        struct txx9_sramc_dev *tdev;
 943
 944        tdev = container_of(dev, struct txx9_sramc_dev, dev);
 945        kfree(tdev);
 946}
 947
 948void __init txx9_sramc_init(struct resource *r)
 949{
 950        struct txx9_sramc_dev *dev;
 951        size_t size;
 952        int err;
 953
 954        err = subsys_system_register(&txx9_sramc_subsys, NULL);
 955        if (err)
 956                return;
 957        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 958        if (!dev)
 959                return;
 960        size = resource_size(r);
 961        dev->base = ioremap(r->start, size);
 962        if (!dev->base) {
 963                kfree(dev);
 964                return;
 965        }
 966        dev->dev.release = &txx9_device_release;
 967        dev->dev.bus = &txx9_sramc_subsys;
 968        sysfs_bin_attr_init(&dev->bindata_attr);
 969        dev->bindata_attr.attr.name = "bindata";
 970        dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
 971        dev->bindata_attr.read = txx9_sram_read;
 972        dev->bindata_attr.write = txx9_sram_write;
 973        dev->bindata_attr.size = size;
 974        dev->bindata_attr.private = dev;
 975        err = device_register(&dev->dev);
 976        if (err)
 977                goto exit_put;
 978        err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 979        if (err) {
 980                device_unregister(&dev->dev);
 981                iounmap(dev->base);
 982                kfree(dev);
 983        }
 984        return;
 985exit_put:
 986        put_device(&dev->dev);
 987        return;
 988}
 989