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/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. */
  46struct resource txx9_ce_res[8];
  47static char txx9_ce_res_name[8][4];     /* "CEn" */
  48
  49/* pcode, internal register */
  50unsigned int txx9_pcode;
  51char txx9_pcode_str[8];
  52static struct resource txx9_reg_res = {
  53        .name = txx9_pcode_str,
  54        .flags = IORESOURCE_MEM,
  55};
  56void __init
  57txx9_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 */
  77unsigned int txx9_master_clock;
  78unsigned int txx9_cpu_clock;
  79unsigned int txx9_gbus_clock;
  80
  81#ifdef CONFIG_CPU_TX39XX
  82/* don't enable by default - see errata */
  83int txx9_ccfg_toeon __initdata;
  84#else
  85int txx9_ccfg_toeon __initdata = 1;
  86#endif
  87
  88#define BOARD_VEC(board)        extern struct txx9_board_vec board;
  89#include <asm/txx9/boards.h>
  90#undef BOARD_VEC
  91
  92struct txx9_board_vec *txx9_board_vec __initdata;
  93static char txx9_system_type[32];
  94
  95static struct txx9_board_vec *board_vecs[] __initdata = {
  96#define BOARD_VEC(board)        &board,
  97#include <asm/txx9/boards.h>
  98#undef BOARD_VEC
  99};
 100
 101static struct txx9_board_vec *__init find_board_byname(const char *name)
 102{
 103        int i;
 104
 105        /* search board_vecs table */
 106        for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
 107                if (strstr(board_vecs[i]->system, name))
 108                        return board_vecs[i];
 109        }
 110        return NULL;
 111}
 112
 113static void __init prom_init_cmdline(void)
 114{
 115        int argc;
 116        int *argv32;
 117        int i;                  /* Always ignore the "-c" at argv[0] */
 118
 119        if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
 120                /*
 121                 * argc is not a valid number, or argv32 is not a valid
 122                 * pointer
 123                 */
 124                argc = 0;
 125                argv32 = NULL;
 126        } else {
 127                argc = (int)fw_arg0;
 128                argv32 = (int *)fw_arg1;
 129        }
 130
 131        arcs_cmdline[0] = '\0';
 132
 133        for (i = 1; i < argc; i++) {
 134                char *str = (char *)(long)argv32[i];
 135                if (i != 1)
 136                        strcat(arcs_cmdline, " ");
 137                if (strchr(str, ' ')) {
 138                        strcat(arcs_cmdline, "\"");
 139                        strcat(arcs_cmdline, str);
 140                        strcat(arcs_cmdline, "\"");
 141                } else
 142                        strcat(arcs_cmdline, str);
 143        }
 144}
 145
 146static int txx9_ic_disable __initdata;
 147static int txx9_dc_disable __initdata;
 148
 149#if defined(CONFIG_CPU_TX49XX)
 150/* flush all cache on very early stage (before 4k_cache_init) */
 151static void __init early_flush_dcache(void)
 152{
 153        unsigned int conf = read_c0_config();
 154        unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
 155        unsigned int linesz = 32;
 156        unsigned long addr, end;
 157
 158        end = INDEX_BASE + dc_size / 4;
 159        /* 4way, waybit=0 */
 160        for (addr = INDEX_BASE; addr < end; addr += linesz) {
 161                cache_op(Index_Writeback_Inv_D, addr | 0);
 162                cache_op(Index_Writeback_Inv_D, addr | 1);
 163                cache_op(Index_Writeback_Inv_D, addr | 2);
 164                cache_op(Index_Writeback_Inv_D, addr | 3);
 165        }
 166}
 167
 168static void __init txx9_cache_fixup(void)
 169{
 170        unsigned int conf;
 171
 172        conf = read_c0_config();
 173        /* flush and disable */
 174        if (txx9_ic_disable) {
 175                conf |= TX49_CONF_IC;
 176                write_c0_config(conf);
 177        }
 178        if (txx9_dc_disable) {
 179                early_flush_dcache();
 180                conf |= TX49_CONF_DC;
 181                write_c0_config(conf);
 182        }
 183
 184        /* enable cache */
 185        conf = read_c0_config();
 186        if (!txx9_ic_disable)
 187                conf &= ~TX49_CONF_IC;
 188        if (!txx9_dc_disable)
 189                conf &= ~TX49_CONF_DC;
 190        write_c0_config(conf);
 191
 192        if (conf & TX49_CONF_IC)
 193                pr_info("TX49XX I-Cache disabled.\n");
 194        if (conf & TX49_CONF_DC)
 195                pr_info("TX49XX D-Cache disabled.\n");
 196}
 197#elif defined(CONFIG_CPU_TX39XX)
 198/* flush all cache on very early stage (before tx39_cache_init) */
 199static void __init early_flush_dcache(void)
 200{
 201        unsigned int conf = read_c0_config();
 202        unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
 203                                           TX39_CONF_DCS_SHIFT));
 204        unsigned int linesz = 16;
 205        unsigned long addr, end;
 206
 207        end = INDEX_BASE + dc_size / 2;
 208        /* 2way, waybit=0 */
 209        for (addr = INDEX_BASE; addr < end; addr += linesz) {
 210                cache_op(Index_Writeback_Inv_D, addr | 0);
 211                cache_op(Index_Writeback_Inv_D, addr | 1);
 212        }
 213}
 214
 215static void __init txx9_cache_fixup(void)
 216{
 217        unsigned int conf;
 218
 219        conf = read_c0_config();
 220        /* flush and disable */
 221        if (txx9_ic_disable) {
 222                conf &= ~TX39_CONF_ICE;
 223                write_c0_config(conf);
 224        }
 225        if (txx9_dc_disable) {
 226                early_flush_dcache();
 227                conf &= ~TX39_CONF_DCE;
 228                write_c0_config(conf);
 229        }
 230
 231        /* enable cache */
 232        conf = read_c0_config();
 233        if (!txx9_ic_disable)
 234                conf |= TX39_CONF_ICE;
 235        if (!txx9_dc_disable)
 236                conf |= TX39_CONF_DCE;
 237        write_c0_config(conf);
 238
 239        if (!(conf & TX39_CONF_ICE))
 240                pr_info("TX39XX I-Cache disabled.\n");
 241        if (!(conf & TX39_CONF_DCE))
 242                pr_info("TX39XX D-Cache disabled.\n");
 243}
 244#else
 245static inline void txx9_cache_fixup(void)
 246{
 247}
 248#endif
 249
 250static void __init preprocess_cmdline(void)
 251{
 252        static char cmdline[COMMAND_LINE_SIZE] __initdata;
 253        char *s;
 254
 255        strcpy(cmdline, arcs_cmdline);
 256        s = cmdline;
 257        arcs_cmdline[0] = '\0';
 258        while (s && *s) {
 259                char *str = strsep(&s, " ");
 260                if (strncmp(str, "board=", 6) == 0) {
 261                        txx9_board_vec = find_board_byname(str + 6);
 262                        continue;
 263                } else if (strncmp(str, "masterclk=", 10) == 0) {
 264                        unsigned int val;
 265                        if (kstrtouint(str + 10, 10, &val) == 0)
 266                                txx9_master_clock = val;
 267                        continue;
 268                } else if (strcmp(str, "icdisable") == 0) {
 269                        txx9_ic_disable = 1;
 270                        continue;
 271                } else if (strcmp(str, "dcdisable") == 0) {
 272                        txx9_dc_disable = 1;
 273                        continue;
 274                } else if (strcmp(str, "toeoff") == 0) {
 275                        txx9_ccfg_toeon = 0;
 276                        continue;
 277                } else if (strcmp(str, "toeon") == 0) {
 278                        txx9_ccfg_toeon = 1;
 279                        continue;
 280                }
 281                if (arcs_cmdline[0])
 282                        strcat(arcs_cmdline, " ");
 283                strcat(arcs_cmdline, str);
 284        }
 285
 286        txx9_cache_fixup();
 287}
 288
 289static void __init select_board(void)
 290{
 291        const char *envstr;
 292
 293        /* first, determine by "board=" argument in preprocess_cmdline() */
 294        if (txx9_board_vec)
 295                return;
 296        /* next, determine by "board" envvar */
 297        envstr = prom_getenv("board");
 298        if (envstr) {
 299                txx9_board_vec = find_board_byname(envstr);
 300                if (txx9_board_vec)
 301                        return;
 302        }
 303
 304        /* select "default" board */
 305#ifdef CONFIG_TOSHIBA_JMR3927
 306        txx9_board_vec = &jmr3927_vec;
 307#endif
 308#ifdef CONFIG_CPU_TX49XX
 309        switch (TX4938_REV_PCODE()) {
 310#ifdef CONFIG_TOSHIBA_RBTX4927
 311        case 0x4927:
 312                txx9_board_vec = &rbtx4927_vec;
 313                break;
 314        case 0x4937:
 315                txx9_board_vec = &rbtx4937_vec;
 316                break;
 317#endif
 318#ifdef CONFIG_TOSHIBA_RBTX4938
 319        case 0x4938:
 320                txx9_board_vec = &rbtx4938_vec;
 321                break;
 322#endif
 323#ifdef CONFIG_TOSHIBA_RBTX4939
 324        case 0x4939:
 325                txx9_board_vec = &rbtx4939_vec;
 326                break;
 327#endif
 328        }
 329#endif
 330}
 331
 332void __init prom_init(void)
 333{
 334        prom_init_cmdline();
 335        preprocess_cmdline();
 336        select_board();
 337
 338        strcpy(txx9_system_type, txx9_board_vec->system);
 339
 340        txx9_board_vec->prom_init();
 341}
 342
 343const char *get_system_type(void)
 344{
 345        return txx9_system_type;
 346}
 347
 348const char *__init prom_getenv(const char *name)
 349{
 350        const s32 *str;
 351
 352        if (fw_arg2 < CKSEG0)
 353                return NULL;
 354
 355        str = (const s32 *)fw_arg2;
 356        /* YAMON style ("name", "value" pairs) */
 357        while (str[0] && str[1]) {
 358                if (!strcmp((const char *)(unsigned long)str[0], name))
 359                        return (const char *)(unsigned long)str[1];
 360                str += 2;
 361        }
 362        return NULL;
 363}
 364
 365static void __noreturn txx9_machine_halt(void)
 366{
 367        local_irq_disable();
 368        clear_c0_status(ST0_IM);
 369        while (1) {
 370                if (cpu_wait) {
 371                        (*cpu_wait)();
 372                        if (cpu_has_counter) {
 373                                /*
 374                                 * Clear counter interrupt while it
 375                                 * breaks WAIT instruction even if
 376                                 * masked.
 377                                 */
 378                                write_c0_compare(0);
 379                        }
 380                }
 381        }
 382}
 383
 384/* Watchdog support */
 385void __init txx9_wdt_init(unsigned long base)
 386{
 387        struct resource res = {
 388                .start  = base,
 389                .end    = base + 0x100 - 1,
 390                .flags  = IORESOURCE_MEM,
 391        };
 392        platform_device_register_simple("txx9wdt", -1, &res, 1);
 393}
 394
 395void txx9_wdt_now(unsigned long base)
 396{
 397        struct txx9_tmr_reg __iomem *tmrptr =
 398                ioremap(base, sizeof(struct txx9_tmr_reg));
 399        /* disable watch dog timer */
 400        __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
 401        __raw_writel(0, &tmrptr->tcr);
 402        /* kick watchdog */
 403        __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
 404        __raw_writel(1, &tmrptr->cpra); /* immediate */
 405        __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
 406                     &tmrptr->tcr);
 407}
 408
 409/* SPI support */
 410void __init txx9_spi_init(int busid, unsigned long base, int irq)
 411{
 412        struct resource res[] = {
 413                {
 414                        .start  = base,
 415                        .end    = base + 0x20 - 1,
 416                        .flags  = IORESOURCE_MEM,
 417                }, {
 418                        .start  = irq,
 419                        .flags  = IORESOURCE_IRQ,
 420                },
 421        };
 422        platform_device_register_simple("spi_txx9", busid,
 423                                        res, ARRAY_SIZE(res));
 424}
 425
 426void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
 427{
 428        struct platform_device *pdev =
 429                platform_device_alloc("tc35815-mac", id);
 430        if (!pdev ||
 431            platform_device_add_data(pdev, ethaddr, 6) ||
 432            platform_device_add(pdev))
 433                platform_device_put(pdev);
 434}
 435
 436void __init txx9_sio_init(unsigned long baseaddr, int irq,
 437                          unsigned int line, unsigned int sclk, int nocts)
 438{
 439#ifdef CONFIG_SERIAL_TXX9
 440        struct uart_port req;
 441
 442        memset(&req, 0, sizeof(req));
 443        req.line = line;
 444        req.iotype = UPIO_MEM;
 445        req.membase = ioremap(baseaddr, 0x24);
 446        req.mapbase = baseaddr;
 447        req.irq = irq;
 448        if (!nocts)
 449                req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
 450        if (sclk) {
 451                req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
 452                req.uartclk = sclk;
 453        } else
 454                req.uartclk = TXX9_IMCLK;
 455        early_serial_txx9_setup(&req);
 456#endif /* CONFIG_SERIAL_TXX9 */
 457}
 458
 459#ifdef CONFIG_EARLY_PRINTK
 460static void null_prom_putchar(char c)
 461{
 462}
 463void (*txx9_prom_putchar)(char c) = null_prom_putchar;
 464
 465void prom_putchar(char c)
 466{
 467        txx9_prom_putchar(c);
 468}
 469
 470static void __iomem *early_txx9_sio_port;
 471
 472static void early_txx9_sio_putchar(char c)
 473{
 474#define TXX9_SICISR     0x0c
 475#define TXX9_SITFIFO    0x1c
 476#define TXX9_SICISR_TXALS       0x00000002
 477        while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
 478                 TXX9_SICISR_TXALS))
 479                ;
 480        __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
 481}
 482
 483void __init txx9_sio_putchar_init(unsigned long baseaddr)
 484{
 485        early_txx9_sio_port = ioremap(baseaddr, 0x24);
 486        txx9_prom_putchar = early_txx9_sio_putchar;
 487}
 488#endif /* CONFIG_EARLY_PRINTK */
 489
 490/* wrappers */
 491void __init plat_mem_setup(void)
 492{
 493        ioport_resource.start = 0;
 494        ioport_resource.end = ~0UL;     /* no limit */
 495        iomem_resource.start = 0;
 496        iomem_resource.end = ~0UL;      /* no limit */
 497
 498        /* fallback restart/halt routines */
 499        _machine_restart = (void (*)(char *))txx9_machine_halt;
 500        _machine_halt = txx9_machine_halt;
 501        pm_power_off = txx9_machine_halt;
 502
 503#ifdef CONFIG_PCI
 504        pcibios_plat_setup = txx9_pcibios_setup;
 505#endif
 506        txx9_board_vec->mem_setup();
 507}
 508
 509void __init arch_init_irq(void)
 510{
 511        txx9_board_vec->irq_setup();
 512}
 513
 514void __init plat_time_init(void)
 515{
 516#ifdef CONFIG_CPU_TX49XX
 517        mips_hpt_frequency = txx9_cpu_clock / 2;
 518#endif
 519        txx9_board_vec->time_init();
 520}
 521
 522static void txx9_clk_init(void)
 523{
 524        struct clk_hw *hw;
 525        int error;
 526
 527        hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
 528        if (IS_ERR(hw)) {
 529                error = PTR_ERR(hw);
 530                goto fail;
 531        }
 532
 533        hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
 534        error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
 535        if (error)
 536                goto fail;
 537
 538#ifdef CONFIG_CPU_TX49XX
 539        if (TX4938_REV_PCODE() == 0x4938) {
 540                hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
 541                error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
 542                if (error)
 543                        goto fail;
 544        }
 545#endif
 546
 547        return;
 548
 549fail:
 550        pr_err("Failed to register clocks: %d\n", error);
 551}
 552
 553static int __init _txx9_arch_init(void)
 554{
 555        txx9_clk_init();
 556
 557        if (txx9_board_vec->arch_init)
 558                txx9_board_vec->arch_init();
 559        return 0;
 560}
 561arch_initcall(_txx9_arch_init);
 562
 563static int __init _txx9_device_init(void)
 564{
 565        if (txx9_board_vec->device_init)
 566                txx9_board_vec->device_init();
 567        return 0;
 568}
 569device_initcall(_txx9_device_init);
 570
 571int (*txx9_irq_dispatch)(int pending);
 572asmlinkage void plat_irq_dispatch(void)
 573{
 574        int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 575        int irq = txx9_irq_dispatch(pending);
 576
 577        if (likely(irq >= 0))
 578                do_IRQ(irq);
 579        else
 580                spurious_interrupt();
 581}
 582
 583/* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
 584#ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
 585static unsigned long __swizzle_addr_none(unsigned long port)
 586{
 587        return port;
 588}
 589unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
 590EXPORT_SYMBOL(__swizzle_addr_b);
 591#endif
 592
 593#ifdef NEEDS_TXX9_IOSWABW
 594static u16 ioswabw_default(volatile u16 *a, u16 x)
 595{
 596        return le16_to_cpu(x);
 597}
 598static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
 599{
 600        return x;
 601}
 602u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
 603EXPORT_SYMBOL(ioswabw);
 604u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
 605EXPORT_SYMBOL(__mem_ioswabw);
 606#endif
 607
 608void __init txx9_physmap_flash_init(int no, unsigned long addr,
 609                                    unsigned long size,
 610                                    const struct physmap_flash_data *pdata)
 611{
 612#if IS_ENABLED(CONFIG_MTD_PHYSMAP)
 613        struct resource res = {
 614                .start = addr,
 615                .end = addr + size - 1,
 616                .flags = IORESOURCE_MEM,
 617        };
 618        struct platform_device *pdev;
 619        static struct mtd_partition parts[2];
 620        struct physmap_flash_data pdata_part;
 621
 622        /* If this area contained boot area, make separate partition */
 623        if (pdata->nr_parts == 0 && !pdata->parts &&
 624            addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
 625            !parts[0].name) {
 626                parts[0].name = "boot";
 627                parts[0].offset = 0x1fc00000 - addr;
 628                parts[0].size = addr + size - 0x1fc00000;
 629                parts[1].name = "user";
 630                parts[1].offset = 0;
 631                parts[1].size = 0x1fc00000 - addr;
 632                pdata_part = *pdata;
 633                pdata_part.nr_parts = ARRAY_SIZE(parts);
 634                pdata_part.parts = parts;
 635                pdata = &pdata_part;
 636        }
 637
 638        pdev = platform_device_alloc("physmap-flash", no);
 639        if (!pdev ||
 640            platform_device_add_resources(pdev, &res, 1) ||
 641            platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 642            platform_device_add(pdev))
 643                platform_device_put(pdev);
 644#endif
 645}
 646
 647void __init txx9_ndfmc_init(unsigned long baseaddr,
 648                            const struct txx9ndfmc_platform_data *pdata)
 649{
 650#if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
 651        struct resource res = {
 652                .start = baseaddr,
 653                .end = baseaddr + 0x1000 - 1,
 654                .flags = IORESOURCE_MEM,
 655        };
 656        struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
 657
 658        if (!pdev ||
 659            platform_device_add_resources(pdev, &res, 1) ||
 660            platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 661            platform_device_add(pdev))
 662                platform_device_put(pdev);
 663#endif
 664}
 665
 666#if IS_ENABLED(CONFIG_LEDS_GPIO)
 667static DEFINE_SPINLOCK(txx9_iocled_lock);
 668
 669#define TXX9_IOCLED_MAXLEDS 8
 670
 671struct txx9_iocled_data {
 672        struct gpio_chip chip;
 673        u8 cur_val;
 674        void __iomem *mmioaddr;
 675        struct gpio_led_platform_data pdata;
 676        struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
 677        char names[TXX9_IOCLED_MAXLEDS][32];
 678};
 679
 680static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
 681{
 682        struct txx9_iocled_data *data = gpiochip_get_data(chip);
 683        return !!(data->cur_val & (1 << offset));
 684}
 685
 686static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
 687                            int value)
 688{
 689        struct txx9_iocled_data *data = gpiochip_get_data(chip);
 690        unsigned long flags;
 691        spin_lock_irqsave(&txx9_iocled_lock, flags);
 692        if (value)
 693                data->cur_val |= 1 << offset;
 694        else
 695                data->cur_val &= ~(1 << offset);
 696        writeb(data->cur_val, data->mmioaddr);
 697        mmiowb();
 698        spin_unlock_irqrestore(&txx9_iocled_lock, flags);
 699}
 700
 701static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
 702{
 703        return 0;
 704}
 705
 706static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
 707                               int value)
 708{
 709        txx9_iocled_set(chip, offset, value);
 710        return 0;
 711}
 712
 713void __init txx9_iocled_init(unsigned long baseaddr,
 714                             int basenum, unsigned int num, int lowactive,
 715                             const char *color, char **deftriggers)
 716{
 717        struct txx9_iocled_data *iocled;
 718        struct platform_device *pdev;
 719        int i;
 720        static char *default_triggers[] __initdata = {
 721                "heartbeat",
 722                "disk-activity",
 723                "nand-disk",
 724                NULL,
 725        };
 726
 727        if (!deftriggers)
 728                deftriggers = default_triggers;
 729        iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
 730        if (!iocled)
 731                return;
 732        iocled->mmioaddr = ioremap(baseaddr, 1);
 733        if (!iocled->mmioaddr)
 734                goto out_free;
 735        iocled->chip.get = txx9_iocled_get;
 736        iocled->chip.set = txx9_iocled_set;
 737        iocled->chip.direction_input = txx9_iocled_dir_in;
 738        iocled->chip.direction_output = txx9_iocled_dir_out;
 739        iocled->chip.label = "iocled";
 740        iocled->chip.base = basenum;
 741        iocled->chip.ngpio = num;
 742        if (gpiochip_add_data(&iocled->chip, iocled))
 743                goto out_unmap;
 744        if (basenum < 0)
 745                basenum = iocled->chip.base;
 746
 747        pdev = platform_device_alloc("leds-gpio", basenum);
 748        if (!pdev)
 749                goto out_gpio;
 750        iocled->pdata.num_leds = num;
 751        iocled->pdata.leds = iocled->leds;
 752        for (i = 0; i < num; i++) {
 753                struct gpio_led *led = &iocled->leds[i];
 754                snprintf(iocled->names[i], sizeof(iocled->names[i]),
 755                         "iocled:%s:%u", color, i);
 756                led->name = iocled->names[i];
 757                led->gpio = basenum + i;
 758                led->active_low = lowactive;
 759                if (deftriggers && *deftriggers)
 760                        led->default_trigger = *deftriggers++;
 761        }
 762        pdev->dev.platform_data = &iocled->pdata;
 763        if (platform_device_add(pdev))
 764                goto out_pdev;
 765        return;
 766
 767out_pdev:
 768        platform_device_put(pdev);
 769out_gpio:
 770        gpiochip_remove(&iocled->chip);
 771out_unmap:
 772        iounmap(iocled->mmioaddr);
 773out_free:
 774        kfree(iocled);
 775}
 776#else /* CONFIG_LEDS_GPIO */
 777void __init txx9_iocled_init(unsigned long baseaddr,
 778                             int basenum, unsigned int num, int lowactive,
 779                             const char *color, char **deftriggers)
 780{
 781}
 782#endif /* CONFIG_LEDS_GPIO */
 783
 784void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
 785                           const struct txx9dmac_platform_data *pdata)
 786{
 787#if IS_ENABLED(CONFIG_TXX9_DMAC)
 788        struct resource res[] = {
 789                {
 790                        .start = baseaddr,
 791                        .end = baseaddr + 0x800 - 1,
 792                        .flags = IORESOURCE_MEM,
 793#ifndef CONFIG_MACH_TX49XX
 794                }, {
 795                        .start = irq,
 796                        .flags = IORESOURCE_IRQ,
 797#endif
 798                }
 799        };
 800#ifdef CONFIG_MACH_TX49XX
 801        struct resource chan_res[] = {
 802                {
 803                        .flags = IORESOURCE_IRQ,
 804                }
 805        };
 806#endif
 807        struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
 808        struct txx9dmac_chan_platform_data cpdata;
 809        int i;
 810
 811        if (!pdev ||
 812            platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
 813            platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
 814            platform_device_add(pdev)) {
 815                platform_device_put(pdev);
 816                return;
 817        }
 818        memset(&cpdata, 0, sizeof(cpdata));
 819        cpdata.dmac_dev = pdev;
 820        for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
 821#ifdef CONFIG_MACH_TX49XX
 822                chan_res[0].start = irq + i;
 823#endif
 824                pdev = platform_device_alloc("txx9dmac-chan",
 825                                             id * TXX9_DMA_MAX_NR_CHANNELS + i);
 826                if (!pdev ||
 827#ifdef CONFIG_MACH_TX49XX
 828                    platform_device_add_resources(pdev, chan_res,
 829                                                  ARRAY_SIZE(chan_res)) ||
 830#endif
 831                    platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
 832                    platform_device_add(pdev))
 833                        platform_device_put(pdev);
 834        }
 835#endif
 836}
 837
 838void __init txx9_aclc_init(unsigned long baseaddr, int irq,
 839                           unsigned int dmac_id,
 840                           unsigned int dma_chan_out,
 841                           unsigned int dma_chan_in)
 842{
 843#if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
 844        unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
 845        struct resource res[] = {
 846                {
 847                        .start = baseaddr,
 848                        .end = baseaddr + 0x100 - 1,
 849                        .flags = IORESOURCE_MEM,
 850                }, {
 851                        .start = irq,
 852                        .flags = IORESOURCE_IRQ,
 853                }, {
 854                        .name = "txx9dmac-chan",
 855                        .start = dma_base + dma_chan_out,
 856                        .flags = IORESOURCE_DMA,
 857                }, {
 858                        .name = "txx9dmac-chan",
 859                        .start = dma_base + dma_chan_in,
 860                        .flags = IORESOURCE_DMA,
 861                }
 862        };
 863        struct platform_device *pdev =
 864                platform_device_alloc("txx9aclc-ac97", -1);
 865
 866        if (!pdev ||
 867            platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
 868            platform_device_add(pdev))
 869                platform_device_put(pdev);
 870#endif
 871}
 872
 873static struct bus_type txx9_sramc_subsys = {
 874        .name = "txx9_sram",
 875        .dev_name = "txx9_sram",
 876};
 877
 878struct txx9_sramc_dev {
 879        struct device dev;
 880        struct bin_attribute bindata_attr;
 881        void __iomem *base;
 882};
 883
 884static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
 885                              struct bin_attribute *bin_attr,
 886                              char *buf, loff_t pos, size_t size)
 887{
 888        struct txx9_sramc_dev *dev = bin_attr->private;
 889        size_t ramsize = bin_attr->size;
 890
 891        if (pos >= ramsize)
 892                return 0;
 893        if (pos + size > ramsize)
 894                size = ramsize - pos;
 895        memcpy_fromio(buf, dev->base + pos, size);
 896        return size;
 897}
 898
 899static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
 900                               struct bin_attribute *bin_attr,
 901                               char *buf, loff_t pos, size_t size)
 902{
 903        struct txx9_sramc_dev *dev = bin_attr->private;
 904        size_t ramsize = bin_attr->size;
 905
 906        if (pos >= ramsize)
 907                return 0;
 908        if (pos + size > ramsize)
 909                size = ramsize - pos;
 910        memcpy_toio(dev->base + pos, buf, size);
 911        return size;
 912}
 913
 914static void txx9_device_release(struct device *dev)
 915{
 916        struct txx9_sramc_dev *tdev;
 917
 918        tdev = container_of(dev, struct txx9_sramc_dev, dev);
 919        kfree(tdev);
 920}
 921
 922void __init txx9_sramc_init(struct resource *r)
 923{
 924        struct txx9_sramc_dev *dev;
 925        size_t size;
 926        int err;
 927
 928        err = subsys_system_register(&txx9_sramc_subsys, NULL);
 929        if (err)
 930                return;
 931        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 932        if (!dev)
 933                return;
 934        size = resource_size(r);
 935        dev->base = ioremap(r->start, size);
 936        if (!dev->base) {
 937                kfree(dev);
 938                return;
 939        }
 940        dev->dev.release = &txx9_device_release;
 941        dev->dev.bus = &txx9_sramc_subsys;
 942        sysfs_bin_attr_init(&dev->bindata_attr);
 943        dev->bindata_attr.attr.name = "bindata";
 944        dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
 945        dev->bindata_attr.read = txx9_sram_read;
 946        dev->bindata_attr.write = txx9_sram_write;
 947        dev->bindata_attr.size = size;
 948        dev->bindata_attr.private = dev;
 949        err = device_register(&dev->dev);
 950        if (err)
 951                goto exit_put;
 952        err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
 953        if (err) {
 954                iounmap(dev->base);
 955                device_unregister(&dev->dev);
 956        }
 957        return;
 958exit_put:
 959        iounmap(dev->base);
 960        put_device(&dev->dev);
 961}
 962