setup.c

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/*
 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
 *      and RBTX49xx patch from CELF patch archive.
 *
 * 2003-2005 (c) MontaVista Software, Inc.
 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/mtd/physmap.h>
#include <linux/leds.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <asm/bootinfo.h>
#include <asm/time.h>
#include <asm/reboot.h>
#include <asm/r4kcache.h>
#include <asm/sections.h>
#include <asm/txx9/generic.h>
#include <asm/txx9/pci.h>
#include <asm/txx9tmr.h>
#include <asm/txx9/ndfmc.h>
#include <asm/txx9/dmac.h>
#ifdef CONFIG_CPU_TX49XX
#include <asm/txx9/tx4938.h>
#endif

/* EBUSC settings of TX4927, etc. */
struct resource txx9_ce_res[8];
static char txx9_ce_res_name[8][4]; /* "CEn" */

/* pcode, internal register */
unsigned int txx9_pcode;
char txx9_pcode_str[8];
static struct resource txx9_reg_res = {
    .name = txx9_pcode_str,
    .flags = IORESOURCE_MEM,
};
void __init
txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
        sprintf(txx9_ce_res_name[i], "CE%d", i);
        txx9_ce_res[i].flags = IORESOURCE_MEM;
        txx9_ce_res[i].name = txx9_ce_res_name[i];
    }

    txx9_pcode = pcode;
    sprintf(txx9_pcode_str, "TX%x", pcode);
    if (base) {
        txx9_reg_res.start = base & 0xfffffffffULL;
        txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
        request_resource(&iomem_resource, &txx9_reg_res);
    }
}

/* clocks */
unsigned int txx9_master_clock;
unsigned int txx9_cpu_clock;
unsigned int txx9_gbus_clock;

#ifdef CONFIG_CPU_TX39XX
/* don't enable by default - see errata */
int txx9_ccfg_toeon __initdata;
#else
int txx9_ccfg_toeon __initdata = 1;
#endif

/* Minimum CLK support */

struct clk *clk_get(struct device *dev, const char *id)
{
    if (!strcmp(id, "spi-baseclk"))
        return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
    if (!strcmp(id, "imbus_clk"))
        return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
    return ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL(clk_get);

int clk_enable(struct clk *clk)
{
    return 0;
}
EXPORT_SYMBOL(clk_enable);

void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);

unsigned long clk_get_rate(struct clk *clk)
{
    return (unsigned long)clk;
}
EXPORT_SYMBOL(clk_get_rate);

void clk_put(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_put);

/* GPIO support */

#ifdef CONFIG_GENERIC_GPIO
int gpio_to_irq(unsigned gpio)
{
    return -EINVAL;
}
EXPORT_SYMBOL(gpio_to_irq);

int irq_to_gpio(unsigned irq)
{
    return -EINVAL;
}
EXPORT_SYMBOL(irq_to_gpio);
#endif

#define BOARD_VEC(board)    extern struct txx9_board_vec board;
#include <asm/txx9/boards.h>
#undef BOARD_VEC

struct txx9_board_vec *txx9_board_vec __initdata;
static char txx9_system_type[32];

static struct txx9_board_vec *board_vecs[] __initdata = {
#define BOARD_VEC(board)    &board,
#include <asm/txx9/boards.h>
#undef BOARD_VEC
};

static struct txx9_board_vec *__init find_board_byname(const char *name)
{
    int i;

    /* search board_vecs table */
    for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
        if (strstr(board_vecs[i]->system, name))
            return board_vecs[i];
    }
    return NULL;
}

static void __init prom_init_cmdline(void)
{
    int argc;
    int *argv32;
    int i;          /* Always ignore the "-c" at argv[0] */

    if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
        /*
         * argc is not a valid number, or argv32 is not a valid
         * pointer
         */
        argc = 0;
        argv32 = NULL;
    } else {
        argc = (int)fw_arg0;
        argv32 = (int *)fw_arg1;
    }

    arcs_cmdline[0] = '\0';

    for (i = 1; i < argc; i++) {
        char *str = (char *)(long)argv32[i];
        if (i != 1)
            strcat(arcs_cmdline, " ");
        if (strchr(str, ' ')) {
            strcat(arcs_cmdline, "\"");
            strcat(arcs_cmdline, str);
            strcat(arcs_cmdline, "\"");
        } else
            strcat(arcs_cmdline, str);
    }
}

static int txx9_ic_disable __initdata;
static int txx9_dc_disable __initdata;

#if defined(CONFIG_CPU_TX49XX)
/* flush all cache on very early stage (before 4k_cache_init) */
static void __init early_flush_dcache(void)
{
    unsigned int conf = read_c0_config();
    unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
    unsigned int linesz = 32;
    unsigned long addr, end;

    end = INDEX_BASE + dc_size / 4;
    /* 4way, waybit=0 */
    for (addr = INDEX_BASE; addr < end; addr += linesz) {
        cache_op(Index_Writeback_Inv_D, addr | 0);
        cache_op(Index_Writeback_Inv_D, addr | 1);
        cache_op(Index_Writeback_Inv_D, addr | 2);
        cache_op(Index_Writeback_Inv_D, addr | 3);
    }
}

static void __init txx9_cache_fixup(void)
{
    unsigned int conf;

    conf = read_c0_config();
    /* flush and disable */
    if (txx9_ic_disable) {
        conf |= TX49_CONF_IC;
        write_c0_config(conf);
    }
    if (txx9_dc_disable) {
        early_flush_dcache();
        conf |= TX49_CONF_DC;
        write_c0_config(conf);
    }

    /* enable cache */
    conf = read_c0_config();
    if (!txx9_ic_disable)
        conf &= ~TX49_CONF_IC;
    if (!txx9_dc_disable)
        conf &= ~TX49_CONF_DC;
    write_c0_config(conf);

    if (conf & TX49_CONF_IC)
        pr_info("TX49XX I-Cache disabled.\n");
    if (conf & TX49_CONF_DC)
        pr_info("TX49XX D-Cache disabled.\n");
}
#elif defined(CONFIG_CPU_TX39XX)
/* flush all cache on very early stage (before tx39_cache_init) */
static void __init early_flush_dcache(void)
{
    unsigned int conf = read_c0_config();
    unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
                       TX39_CONF_DCS_SHIFT));
    unsigned int linesz = 16;
    unsigned long addr, end;

    end = INDEX_BASE + dc_size / 2;
    /* 2way, waybit=0 */
    for (addr = INDEX_BASE; addr < end; addr += linesz) {
        cache_op(Index_Writeback_Inv_D, addr | 0);
        cache_op(Index_Writeback_Inv_D, addr | 1);
    }
}

static void __init txx9_cache_fixup(void)
{
    unsigned int conf;

    conf = read_c0_config();
    /* flush and disable */
    if (txx9_ic_disable) {
        conf &= ~TX39_CONF_ICE;
        write_c0_config(conf);
    }
    if (txx9_dc_disable) {
        early_flush_dcache();
        conf &= ~TX39_CONF_DCE;
        write_c0_config(conf);
    }

    /* enable cache */
    conf = read_c0_config();
    if (!txx9_ic_disable)
        conf |= TX39_CONF_ICE;
    if (!txx9_dc_disable)
        conf |= TX39_CONF_DCE;
    write_c0_config(conf);

    if (!(conf & TX39_CONF_ICE))
        pr_info("TX39XX I-Cache disabled.\n");
    if (!(conf & TX39_CONF_DCE))
        pr_info("TX39XX D-Cache disabled.\n");
}
#else
static inline void txx9_cache_fixup(void)
{
}
#endif

static void __init preprocess_cmdline(void)
{
    static char cmdline[COMMAND_LINE_SIZE] __initdata;
    char *s;

    strcpy(cmdline, arcs_cmdline);
    s = cmdline;
    arcs_cmdline[0] = '\0';
    while (s && *s) {
        char *str = strsep(&s, " ");
        if (strncmp(str, "board=", 6) == 0) {
            txx9_board_vec = find_board_byname(str + 6);
            continue;
        } else if (strncmp(str, "masterclk=", 10) == 0) {
            unsigned long val;
            if (strict_strtoul(str + 10, 10, &val) == 0)
                txx9_master_clock = val;
            continue;
        } else if (strcmp(str, "icdisable") == 0) {
            txx9_ic_disable = 1;
            continue;
        } else if (strcmp(str, "dcdisable") == 0) {
            txx9_dc_disable = 1;
            continue;
        } else if (strcmp(str, "toeoff") == 0) {
            txx9_ccfg_toeon = 0;
            continue;
        } else if (strcmp(str, "toeon") == 0) {
            txx9_ccfg_toeon = 1;
            continue;
        }
        if (arcs_cmdline[0])
            strcat(arcs_cmdline, " ");
        strcat(arcs_cmdline, str);
    }

    txx9_cache_fixup();
}

static void __init select_board(void)
{
    const char *envstr;

    /* first, determine by "board=" argument in preprocess_cmdline() */
    if (txx9_board_vec)
        return;
    /* next, determine by "board" envvar */
    envstr = prom_getenv("board");
    if (envstr) {
        txx9_board_vec = find_board_byname(envstr);
        if (txx9_board_vec)
            return;
    }

    /* select "default" board */
#ifdef CONFIG_CPU_TX39XX
    txx9_board_vec = &jmr3927_vec;
#endif
#ifdef CONFIG_CPU_TX49XX
    switch (TX4938_REV_PCODE()) {
#ifdef CONFIG_TOSHIBA_RBTX4927
    case 0x4927:
        txx9_board_vec = &rbtx4927_vec;
        break;
    case 0x4937:
        txx9_board_vec = &rbtx4937_vec;
        break;
#endif
#ifdef CONFIG_TOSHIBA_RBTX4938
    case 0x4938:
        txx9_board_vec = &rbtx4938_vec;
        break;
#endif
#ifdef CONFIG_TOSHIBA_RBTX4939
    case 0x4939:
        txx9_board_vec = &rbtx4939_vec;
        break;
#endif
    }
#endif
}

void __init prom_init(void)
{
    prom_init_cmdline();
    preprocess_cmdline();
    select_board();

    strcpy(txx9_system_type, txx9_board_vec->system);

    txx9_board_vec->prom_init();
}

void __init prom_free_prom_memory(void)
{
    unsigned long saddr = PAGE_SIZE;
    unsigned long eaddr = __pa_symbol(&_text);

    if (saddr < eaddr)
        free_init_pages("prom memory", saddr, eaddr);
}

const char *get_system_type(void)
{
    return txx9_system_type;
}

const char *__init prom_getenv(const char *name)
{
    const s32 *str;

    if (fw_arg2 < CKSEG0)
        return NULL;

    str = (const s32 *)fw_arg2;
    /* YAMON style ("name", "value" pairs) */
    while (str[0] && str[1]) {
        if (!strcmp((const char *)(unsigned long)str[0], name))
            return (const char *)(unsigned long)str[1];
        str += 2;
    }
    return NULL;
}

static void __noreturn txx9_machine_halt(void)
{
    local_irq_disable();
    clear_c0_status(ST0_IM);
    while (1) {
        if (cpu_wait) {
            (*cpu_wait)();
            if (cpu_has_counter) {
                /*
                 * Clear counter interrupt while it
                 * breaks WAIT instruction even if
                 * masked.
                 */
                write_c0_compare(0);
            }
        }
    }
}

/* Watchdog support */
void __init txx9_wdt_init(unsigned long base)
{
    struct resource res = {
        .start  = base,
        .end    = base + 0x100 - 1,
        .flags  = IORESOURCE_MEM,
    };
    platform_device_register_simple("txx9wdt", -1, &res, 1);
}

void txx9_wdt_now(unsigned long base)
{
    struct txx9_tmr_reg __iomem *tmrptr =
        ioremap(base, sizeof(struct txx9_tmr_reg));
    /* disable watch dog timer */
    __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
    __raw_writel(0, &tmrptr->tcr);
    /* kick watchdog */
    __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
    __raw_writel(1, &tmrptr->cpra); /* immediate */
    __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
             &tmrptr->tcr);
}

/* SPI support */
void __init txx9_spi_init(int busid, unsigned long base, int irq)
{
    struct resource res[] = {
        {
            .start  = base,
            .end    = base + 0x20 - 1,
            .flags  = IORESOURCE_MEM,
        }, {
            .start  = irq,
            .flags  = IORESOURCE_IRQ,
        },
    };
    platform_device_register_simple("spi_txx9", busid,
                    res, ARRAY_SIZE(res));
}

void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
{
    struct platform_device *pdev =
        platform_device_alloc("tc35815-mac", id);
    if (!pdev ||
        platform_device_add_data(pdev, ethaddr, 6) ||
        platform_device_add(pdev))
        platform_device_put(pdev);
}

void __init txx9_sio_init(unsigned long baseaddr, int irq,
              unsigned int line, unsigned int sclk, int nocts)
{
#ifdef CONFIG_SERIAL_TXX9
    struct uart_port req;

    memset(&req, 0, sizeof(req));
    req.line = line;
    req.iotype = UPIO_MEM;
    req.membase = ioremap(baseaddr, 0x24);
    req.mapbase = baseaddr;
    req.irq = irq;
    if (!nocts)
        req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
    if (sclk) {
        req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
        req.uartclk = sclk;
    } else
        req.uartclk = TXX9_IMCLK;
    early_serial_txx9_setup(&req);
#endif /* CONFIG_SERIAL_TXX9 */
}

#ifdef CONFIG_EARLY_PRINTK
static void __init null_prom_putchar(char c)
{
}
void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar;

void __init prom_putchar(char c)
{
    txx9_prom_putchar(c);
}

static void __iomem *early_txx9_sio_port;

static void __init early_txx9_sio_putchar(char c)
{
#define TXX9_SICISR 0x0c
#define TXX9_SITFIFO    0x1c
#define TXX9_SICISR_TXALS   0x00000002
    while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
         TXX9_SICISR_TXALS))
        ;
    __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
}

void __init txx9_sio_putchar_init(unsigned long baseaddr)
{
    early_txx9_sio_port = ioremap(baseaddr, 0x24);
    txx9_prom_putchar = early_txx9_sio_putchar;
}
#endif /* CONFIG_EARLY_PRINTK */

/* wrappers */
void __init plat_mem_setup(void)
{
    ioport_resource.start = 0;
    ioport_resource.end = ~0UL; /* no limit */
    iomem_resource.start = 0;
    iomem_resource.end = ~0UL;  /* no limit */

    /* fallback restart/halt routines */
    _machine_restart = (void (*)(char *))txx9_machine_halt;
    _machine_halt = txx9_machine_halt;
    pm_power_off = txx9_machine_halt;

#ifdef CONFIG_PCI
    pcibios_plat_setup = txx9_pcibios_setup;
#endif
    txx9_board_vec->mem_setup();
}

void __init arch_init_irq(void)
{
    txx9_board_vec->irq_setup();
}

void __init plat_time_init(void)
{
#ifdef CONFIG_CPU_TX49XX
    mips_hpt_frequency = txx9_cpu_clock / 2;
#endif
    txx9_board_vec->time_init();
}

static int __init _txx9_arch_init(void)
{
    if (txx9_board_vec->arch_init)
        txx9_board_vec->arch_init();
    return 0;
}
arch_initcall(_txx9_arch_init);

static int __init _txx9_device_init(void)
{
    if (txx9_board_vec->device_init)
        txx9_board_vec->device_init();
    return 0;
}
device_initcall(_txx9_device_init);

int (*txx9_irq_dispatch)(int pending);
asmlinkage void plat_irq_dispatch(void)
{
    int pending = read_c0_status() & read_c0_cause() & ST0_IM;
    int irq = txx9_irq_dispatch(pending);

    if (likely(irq >= 0))
        do_IRQ(irq);
    else
        spurious_interrupt();
}

/* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
#ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
static unsigned long __swizzle_addr_none(unsigned long port)
{
    return port;
}
unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
EXPORT_SYMBOL(__swizzle_addr_b);
#endif

#ifdef NEEDS_TXX9_IOSWABW
static u16 ioswabw_default(volatile u16 *a, u16 x)
{
    return le16_to_cpu(x);
}
static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
{
    return x;
}
u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
EXPORT_SYMBOL(ioswabw);
u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
EXPORT_SYMBOL(__mem_ioswabw);
#endif

void __init txx9_physmap_flash_init(int no, unsigned long addr,
                    unsigned long size,
                    const struct physmap_flash_data *pdata)
{
#if IS_ENABLED(CONFIG_MTD_PHYSMAP)
    struct resource res = {
        .start = addr,
        .end = addr + size - 1,
        .flags = IORESOURCE_MEM,
    };
    struct platform_device *pdev;
    static struct mtd_partition parts[2];
    struct physmap_flash_data pdata_part;

    /* If this area contained boot area, make separate partition */
    if (pdata->nr_parts == 0 && !pdata->parts &&
        addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
        !parts[0].name) {
        parts[0].name = "boot";
        parts[0].offset = 0x1fc00000 - addr;
        parts[0].size = addr + size - 0x1fc00000;
        parts[1].name = "user";
        parts[1].offset = 0;
        parts[1].size = 0x1fc00000 - addr;
        pdata_part = *pdata;
        pdata_part.nr_parts = ARRAY_SIZE(parts);
        pdata_part.parts = parts;
        pdata = &pdata_part;
    }

    pdev = platform_device_alloc("physmap-flash", no);
    if (!pdev ||
        platform_device_add_resources(pdev, &res, 1) ||
        platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
        platform_device_add(pdev))
        platform_device_put(pdev);
#endif
}

void __init txx9_ndfmc_init(unsigned long baseaddr,
                const struct txx9ndfmc_platform_data *pdata)
{
#if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
    struct resource res = {
        .start = baseaddr,
        .end = baseaddr + 0x1000 - 1,
        .flags = IORESOURCE_MEM,
    };
    struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);

    if (!pdev ||
        platform_device_add_resources(pdev, &res, 1) ||
        platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
        platform_device_add(pdev))
        platform_device_put(pdev);
#endif
}

#if IS_ENABLED(CONFIG_LEDS_GPIO)
static DEFINE_SPINLOCK(txx9_iocled_lock);

#define TXX9_IOCLED_MAXLEDS 8

struct txx9_iocled_data {
    struct gpio_chip chip;
    u8 cur_val;
    void __iomem *mmioaddr;
    struct gpio_led_platform_data pdata;
    struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
    char names[TXX9_IOCLED_MAXLEDS][32];
};

static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
{
    struct txx9_iocled_data *data =
        container_of(chip, struct txx9_iocled_data, chip);
    return data->cur_val & (1 << offset);
}

static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
                int value)
{
    struct txx9_iocled_data *data =
        container_of(chip, struct txx9_iocled_data, chip);
    unsigned long flags;
    spin_lock_irqsave(&txx9_iocled_lock, flags);
    if (value)
        data->cur_val |= 1 << offset;
    else
        data->cur_val &= ~(1 << offset);
    writeb(data->cur_val, data->mmioaddr);
    mmiowb();
    spin_unlock_irqrestore(&txx9_iocled_lock, flags);
}

static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
{
    return 0;
}

static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
                   int value)
{
    txx9_iocled_set(chip, offset, value);
    return 0;
}

void __init txx9_iocled_init(unsigned long baseaddr,
                 int basenum, unsigned int num, int lowactive,
                 const char *color, char **deftriggers)
{
    struct txx9_iocled_data *iocled;
    struct platform_device *pdev;
    int i;
    static char *default_triggers[] __initdata = {
        "heartbeat",
        "ide-disk",
        "nand-disk",
        NULL,
    };

    if (!deftriggers)
        deftriggers = default_triggers;
    iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
    if (!iocled)
        return;
    iocled->mmioaddr = ioremap(baseaddr, 1);
    if (!iocled->mmioaddr)
        goto out_free;
    iocled->chip.get = txx9_iocled_get;
    iocled->chip.set = txx9_iocled_set;
    iocled->chip.direction_input = txx9_iocled_dir_in;
    iocled->chip.direction_output = txx9_iocled_dir_out;
    iocled->chip.label = "iocled";
    iocled->chip.base = basenum;
    iocled->chip.ngpio = num;
    if (gpiochip_add(&iocled->chip))
        goto out_unmap;
    if (basenum < 0)
        basenum = iocled->chip.base;

    pdev = platform_device_alloc("leds-gpio", basenum);
    if (!pdev)
        goto out_gpio;
    iocled->pdata.num_leds = num;
    iocled->pdata.leds = iocled->leds;
    for (i = 0; i < num; i++) {
        struct gpio_led *led = &iocled->leds[i];
        snprintf(iocled->names[i], sizeof(iocled->names[i]),
             "iocled:%s:%u", color, i);
        led->name = iocled->names[i];
        led->gpio = basenum + i;
        led->active_low = lowactive;
        if (deftriggers && *deftriggers)
            led->default_trigger = *deftriggers++;
    }
    pdev->dev.platform_data = &iocled->pdata;
    if (platform_device_add(pdev))
        goto out_pdev;
    return;
out_pdev:
    platform_device_put(pdev);
out_gpio:
    if (gpiochip_remove(&iocled->chip))
        return;
out_unmap:
    iounmap(iocled->mmioaddr);
out_free:
    kfree(iocled);
}
#else /* CONFIG_LEDS_GPIO */
void __init txx9_iocled_init(unsigned long baseaddr,
                 int basenum, unsigned int num, int lowactive,
                 const char *color, char **deftriggers)
{
}
#endif /* CONFIG_LEDS_GPIO */

void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
               const struct txx9dmac_platform_data *pdata)
{
#if IS_ENABLED(CONFIG_TXX9_DMAC)
    struct resource res[] = {
        {
            .start = baseaddr,
            .end = baseaddr + 0x800 - 1,
            .flags = IORESOURCE_MEM,
#ifndef CONFIG_MACH_TX49XX
        }, {
            .start = irq,
            .flags = IORESOURCE_IRQ,
#endif
        }
    };
#ifdef CONFIG_MACH_TX49XX
    struct resource chan_res[] = {
        {
            .flags = IORESOURCE_IRQ,
        }
    };
#endif
    struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
    struct txx9dmac_chan_platform_data cpdata;
    int i;

    if (!pdev ||
        platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
        platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
        platform_device_add(pdev)) {
        platform_device_put(pdev);
        return;
    }
    memset(&cpdata, 0, sizeof(cpdata));
    cpdata.dmac_dev = pdev;
    for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
#ifdef CONFIG_MACH_TX49XX
        chan_res[0].start = irq + i;
#endif
        pdev = platform_device_alloc("txx9dmac-chan",
                         id * TXX9_DMA_MAX_NR_CHANNELS + i);
        if (!pdev ||
#ifdef CONFIG_MACH_TX49XX
            platform_device_add_resources(pdev, chan_res,
                          ARRAY_SIZE(chan_res)) ||
#endif
            platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
            platform_device_add(pdev))
            platform_device_put(pdev);
    }
#endif
}

void __init txx9_aclc_init(unsigned long baseaddr, int irq,
               unsigned int dmac_id,
               unsigned int dma_chan_out,
               unsigned int dma_chan_in)
{
#if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
    unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
    struct resource res[] = {
        {
            .start = baseaddr,
            .end = baseaddr + 0x100 - 1,
            .flags = IORESOURCE_MEM,
        }, {
            .start = irq,
            .flags = IORESOURCE_IRQ,
        }, {
            .name = "txx9dmac-chan",
            .start = dma_base + dma_chan_out,
            .flags = IORESOURCE_DMA,
        }, {
            .name = "txx9dmac-chan",
            .start = dma_base + dma_chan_in,
            .flags = IORESOURCE_DMA,
        }
    };
    struct platform_device *pdev =
        platform_device_alloc("txx9aclc-ac97", -1);

    if (!pdev ||
        platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
        platform_device_add(pdev))
        platform_device_put(pdev);
#endif
}

static struct bus_type txx9_sramc_subsys = {
    .name = "txx9_sram",
    .dev_name = "txx9_sram",
};

struct txx9_sramc_dev {
    struct device dev;
    struct bin_attribute bindata_attr;
    void __iomem *base;
};

static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
                  struct bin_attribute *bin_attr,
                  char *buf, loff_t pos, size_t size)
{
    struct txx9_sramc_dev *dev = bin_attr->private;
    size_t ramsize = bin_attr->size;

    if (pos >= ramsize)
        return 0;
    if (pos + size > ramsize)
        size = ramsize - pos;
    memcpy_fromio(buf, dev->base + pos, size);
    return size;
}

static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
                   struct bin_attribute *bin_attr,
                   char *buf, loff_t pos, size_t size)
{
    struct txx9_sramc_dev *dev = bin_attr->private;
    size_t ramsize = bin_attr->size;

    if (pos >= ramsize)
        return 0;
    if (pos + size > ramsize)
        size = ramsize - pos;
    memcpy_toio(dev->base + pos, buf, size);
    return size;
}

void __init txx9_sramc_init(struct resource *r)
{
    struct txx9_sramc_dev *dev;
    size_t size;
    int err;

    err = subsys_system_register(&txx9_sramc_subsys, NULL);
    if (err)
        return;
    dev = kzalloc(sizeof(*dev), GFP_KERNEL);
    if (!dev)
        return;
    size = resource_size(r);
    dev->base = ioremap(r->start, size);
    if (!dev->base)
        goto exit;
    dev->dev.bus = &txx9_sramc_subsys;
    sysfs_bin_attr_init(&dev->bindata_attr);
    dev->bindata_attr.attr.name = "bindata";
    dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
    dev->bindata_attr.read = txx9_sram_read;
    dev->bindata_attr.write = txx9_sram_write;
    dev->bindata_attr.size = size;
    dev->bindata_attr.private = dev;
    err = device_register(&dev->dev);
    if (err)
        goto exit;
    err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
    if (err) {
        device_unregister(&dev->dev);
        goto exit;
    }
    return;
exit:
    if (dev) {
        if (dev->base)
            iounmap(dev->base);
        kfree(dev);
    }
}