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0001 /*
0002  * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
0003  *      and RBTX49xx patch from CELF patch archive.
0004  *
0005  * 2003-2005 (c) MontaVista Software, Inc.
0006  * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
0007  *
0008  * This file is subject to the terms and conditions of the GNU General Public
0009  * License.  See the file "COPYING" in the main directory of this archive
0010  * for more details.
0011  */
0012 #include <linux/init.h>
0013 #include <linux/kernel.h>
0014 #include <linux/types.h>
0015 #include <linux/interrupt.h>
0016 #include <linux/string.h>
0017 #include <linux/export.h>
0018 #include <linux/clk-provider.h>
0019 #include <linux/clkdev.h>
0020 #include <linux/err.h>
0021 #include <linux/gpio/driver.h>
0022 #include <linux/platform_device.h>
0023 #include <linux/platform_data/txx9/ndfmc.h>
0024 #include <linux/serial_core.h>
0025 #include <linux/mtd/physmap.h>
0026 #include <linux/leds.h>
0027 #include <linux/device.h>
0028 #include <linux/slab.h>
0029 #include <linux/io.h>
0030 #include <linux/irq.h>
0031 #include <asm/bootinfo.h>
0032 #include <asm/idle.h>
0033 #include <asm/time.h>
0034 #include <asm/reboot.h>
0035 #include <asm/r4kcache.h>
0036 #include <asm/setup.h>
0037 #include <asm/txx9/generic.h>
0038 #include <asm/txx9/pci.h>
0039 #include <asm/txx9tmr.h>
0040 #include <asm/txx9/dmac.h>
0041 #ifdef CONFIG_CPU_TX49XX
0042 #include <asm/txx9/tx4938.h>
0043 #endif
0044 
0045 /* EBUSC settings of TX4927, etc. */
0046 struct resource txx9_ce_res[8];
0047 static char txx9_ce_res_name[8][4]; /* "CEn" */
0048 
0049 /* pcode, internal register */
0050 unsigned int txx9_pcode;
0051 char txx9_pcode_str[8];
0052 static struct resource txx9_reg_res = {
0053     .name = txx9_pcode_str,
0054     .flags = IORESOURCE_MEM,
0055 };
0056 void __init
0057 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
0058 {
0059     int i;
0060 
0061     for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
0062         sprintf(txx9_ce_res_name[i], "CE%d", i);
0063         txx9_ce_res[i].flags = IORESOURCE_MEM;
0064         txx9_ce_res[i].name = txx9_ce_res_name[i];
0065     }
0066 
0067     txx9_pcode = pcode;
0068     sprintf(txx9_pcode_str, "TX%x", pcode);
0069     if (base) {
0070         txx9_reg_res.start = base & 0xfffffffffULL;
0071         txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
0072         request_resource(&iomem_resource, &txx9_reg_res);
0073     }
0074 }
0075 
0076 /* clocks */
0077 unsigned int txx9_master_clock;
0078 unsigned int txx9_cpu_clock;
0079 unsigned int txx9_gbus_clock;
0080 
0081 int txx9_ccfg_toeon __initdata = 1;
0082 
0083 #define BOARD_VEC(board)    extern struct txx9_board_vec board;
0084 #include <asm/txx9/boards.h>
0085 #undef BOARD_VEC
0086 
0087 struct txx9_board_vec *txx9_board_vec __initdata;
0088 static char txx9_system_type[32];
0089 
0090 static struct txx9_board_vec *board_vecs[] __initdata = {
0091 #define BOARD_VEC(board)    &board,
0092 #include <asm/txx9/boards.h>
0093 #undef BOARD_VEC
0094 };
0095 
0096 static struct txx9_board_vec *__init find_board_byname(const char *name)
0097 {
0098     int i;
0099 
0100     /* search board_vecs table */
0101     for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
0102         if (strstr(board_vecs[i]->system, name))
0103             return board_vecs[i];
0104     }
0105     return NULL;
0106 }
0107 
0108 static void __init prom_init_cmdline(void)
0109 {
0110     int argc;
0111     int *argv32;
0112     int i;          /* Always ignore the "-c" at argv[0] */
0113 
0114     if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
0115         /*
0116          * argc is not a valid number, or argv32 is not a valid
0117          * pointer
0118          */
0119         argc = 0;
0120         argv32 = NULL;
0121     } else {
0122         argc = (int)fw_arg0;
0123         argv32 = (int *)fw_arg1;
0124     }
0125 
0126     arcs_cmdline[0] = '\0';
0127 
0128     for (i = 1; i < argc; i++) {
0129         char *str = (char *)(long)argv32[i];
0130         if (i != 1)
0131             strcat(arcs_cmdline, " ");
0132         if (strchr(str, ' ')) {
0133             strcat(arcs_cmdline, "\"");
0134             strcat(arcs_cmdline, str);
0135             strcat(arcs_cmdline, "\"");
0136         } else
0137             strcat(arcs_cmdline, str);
0138     }
0139 }
0140 
0141 static int txx9_ic_disable __initdata;
0142 static int txx9_dc_disable __initdata;
0143 
0144 #if defined(CONFIG_CPU_TX49XX)
0145 /* flush all cache on very early stage (before 4k_cache_init) */
0146 static void __init early_flush_dcache(void)
0147 {
0148     unsigned int conf = read_c0_config();
0149     unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
0150     unsigned int linesz = 32;
0151     unsigned long addr, end;
0152 
0153     end = INDEX_BASE + dc_size / 4;
0154     /* 4way, waybit=0 */
0155     for (addr = INDEX_BASE; addr < end; addr += linesz) {
0156         cache_op(Index_Writeback_Inv_D, addr | 0);
0157         cache_op(Index_Writeback_Inv_D, addr | 1);
0158         cache_op(Index_Writeback_Inv_D, addr | 2);
0159         cache_op(Index_Writeback_Inv_D, addr | 3);
0160     }
0161 }
0162 
0163 static void __init txx9_cache_fixup(void)
0164 {
0165     unsigned int conf;
0166 
0167     conf = read_c0_config();
0168     /* flush and disable */
0169     if (txx9_ic_disable) {
0170         conf |= TX49_CONF_IC;
0171         write_c0_config(conf);
0172     }
0173     if (txx9_dc_disable) {
0174         early_flush_dcache();
0175         conf |= TX49_CONF_DC;
0176         write_c0_config(conf);
0177     }
0178 
0179     /* enable cache */
0180     conf = read_c0_config();
0181     if (!txx9_ic_disable)
0182         conf &= ~TX49_CONF_IC;
0183     if (!txx9_dc_disable)
0184         conf &= ~TX49_CONF_DC;
0185     write_c0_config(conf);
0186 
0187     if (conf & TX49_CONF_IC)
0188         pr_info("TX49XX I-Cache disabled.\n");
0189     if (conf & TX49_CONF_DC)
0190         pr_info("TX49XX D-Cache disabled.\n");
0191 }
0192 #else
0193 static inline void txx9_cache_fixup(void)
0194 {
0195 }
0196 #endif
0197 
0198 static void __init preprocess_cmdline(void)
0199 {
0200     static char cmdline[COMMAND_LINE_SIZE] __initdata;
0201     char *s;
0202 
0203     strcpy(cmdline, arcs_cmdline);
0204     s = cmdline;
0205     arcs_cmdline[0] = '\0';
0206     while (s && *s) {
0207         char *str = strsep(&s, " ");
0208         if (strncmp(str, "board=", 6) == 0) {
0209             txx9_board_vec = find_board_byname(str + 6);
0210             continue;
0211         } else if (strncmp(str, "masterclk=", 10) == 0) {
0212             unsigned int val;
0213             if (kstrtouint(str + 10, 10, &val) == 0)
0214                 txx9_master_clock = val;
0215             continue;
0216         } else if (strcmp(str, "icdisable") == 0) {
0217             txx9_ic_disable = 1;
0218             continue;
0219         } else if (strcmp(str, "dcdisable") == 0) {
0220             txx9_dc_disable = 1;
0221             continue;
0222         } else if (strcmp(str, "toeoff") == 0) {
0223             txx9_ccfg_toeon = 0;
0224             continue;
0225         } else if (strcmp(str, "toeon") == 0) {
0226             txx9_ccfg_toeon = 1;
0227             continue;
0228         }
0229         if (arcs_cmdline[0])
0230             strcat(arcs_cmdline, " ");
0231         strcat(arcs_cmdline, str);
0232     }
0233 
0234     txx9_cache_fixup();
0235 }
0236 
0237 static void __init select_board(void)
0238 {
0239     const char *envstr;
0240 
0241     /* first, determine by "board=" argument in preprocess_cmdline() */
0242     if (txx9_board_vec)
0243         return;
0244     /* next, determine by "board" envvar */
0245     envstr = prom_getenv("board");
0246     if (envstr) {
0247         txx9_board_vec = find_board_byname(envstr);
0248         if (txx9_board_vec)
0249             return;
0250     }
0251 
0252     /* select "default" board */
0253 #ifdef CONFIG_CPU_TX49XX
0254     switch (TX4938_REV_PCODE()) {
0255 #ifdef CONFIG_TOSHIBA_RBTX4927
0256     case 0x4927:
0257         txx9_board_vec = &rbtx4927_vec;
0258         break;
0259     case 0x4937:
0260         txx9_board_vec = &rbtx4937_vec;
0261         break;
0262 #endif
0263     }
0264 #endif
0265 }
0266 
0267 void __init prom_init(void)
0268 {
0269     prom_init_cmdline();
0270     preprocess_cmdline();
0271     select_board();
0272 
0273     strcpy(txx9_system_type, txx9_board_vec->system);
0274 
0275     txx9_board_vec->prom_init();
0276 }
0277 
0278 const char *get_system_type(void)
0279 {
0280     return txx9_system_type;
0281 }
0282 
0283 const char *__init prom_getenv(const char *name)
0284 {
0285     const s32 *str;
0286 
0287     if (fw_arg2 < CKSEG0)
0288         return NULL;
0289 
0290     str = (const s32 *)fw_arg2;
0291     /* YAMON style ("name", "value" pairs) */
0292     while (str[0] && str[1]) {
0293         if (!strcmp((const char *)(unsigned long)str[0], name))
0294             return (const char *)(unsigned long)str[1];
0295         str += 2;
0296     }
0297     return NULL;
0298 }
0299 
0300 static void __noreturn txx9_machine_halt(void)
0301 {
0302     local_irq_disable();
0303     clear_c0_status(ST0_IM);
0304     while (1) {
0305         if (cpu_wait) {
0306             (*cpu_wait)();
0307             if (cpu_has_counter) {
0308                 /*
0309                  * Clear counter interrupt while it
0310                  * breaks WAIT instruction even if
0311                  * masked.
0312                  */
0313                 write_c0_compare(0);
0314             }
0315         }
0316     }
0317 }
0318 
0319 /* Watchdog support */
0320 void __init txx9_wdt_init(unsigned long base)
0321 {
0322     struct resource res = {
0323         .start  = base,
0324         .end    = base + 0x100 - 1,
0325         .flags  = IORESOURCE_MEM,
0326     };
0327     platform_device_register_simple("txx9wdt", -1, &res, 1);
0328 }
0329 
0330 void txx9_wdt_now(unsigned long base)
0331 {
0332     struct txx9_tmr_reg __iomem *tmrptr =
0333         ioremap(base, sizeof(struct txx9_tmr_reg));
0334     /* disable watch dog timer */
0335     __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
0336     __raw_writel(0, &tmrptr->tcr);
0337     /* kick watchdog */
0338     __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
0339     __raw_writel(1, &tmrptr->cpra); /* immediate */
0340     __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
0341              &tmrptr->tcr);
0342 }
0343 
0344 /* SPI support */
0345 void __init txx9_spi_init(int busid, unsigned long base, int irq)
0346 {
0347     struct resource res[] = {
0348         {
0349             .start  = base,
0350             .end    = base + 0x20 - 1,
0351             .flags  = IORESOURCE_MEM,
0352         }, {
0353             .start  = irq,
0354             .flags  = IORESOURCE_IRQ,
0355         },
0356     };
0357     platform_device_register_simple("spi_txx9", busid,
0358                     res, ARRAY_SIZE(res));
0359 }
0360 
0361 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
0362 {
0363     struct platform_device *pdev =
0364         platform_device_alloc("tc35815-mac", id);
0365     if (!pdev ||
0366         platform_device_add_data(pdev, ethaddr, 6) ||
0367         platform_device_add(pdev))
0368         platform_device_put(pdev);
0369 }
0370 
0371 void __init txx9_sio_init(unsigned long baseaddr, int irq,
0372               unsigned int line, unsigned int sclk, int nocts)
0373 {
0374 #ifdef CONFIG_SERIAL_TXX9
0375     struct uart_port req;
0376 
0377     memset(&req, 0, sizeof(req));
0378     req.line = line;
0379     req.iotype = UPIO_MEM;
0380     req.membase = ioremap(baseaddr, 0x24);
0381     req.mapbase = baseaddr;
0382     req.irq = irq;
0383     if (!nocts)
0384         req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
0385     if (sclk) {
0386         req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
0387         req.uartclk = sclk;
0388     } else
0389         req.uartclk = TXX9_IMCLK;
0390     early_serial_txx9_setup(&req);
0391 #endif /* CONFIG_SERIAL_TXX9 */
0392 }
0393 
0394 #ifdef CONFIG_EARLY_PRINTK
0395 static void null_prom_putchar(char c)
0396 {
0397 }
0398 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
0399 
0400 void prom_putchar(char c)
0401 {
0402     txx9_prom_putchar(c);
0403 }
0404 
0405 static void __iomem *early_txx9_sio_port;
0406 
0407 static void early_txx9_sio_putchar(char c)
0408 {
0409 #define TXX9_SICISR 0x0c
0410 #define TXX9_SITFIFO    0x1c
0411 #define TXX9_SICISR_TXALS   0x00000002
0412     while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
0413          TXX9_SICISR_TXALS))
0414         ;
0415     __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
0416 }
0417 
0418 void __init txx9_sio_putchar_init(unsigned long baseaddr)
0419 {
0420     early_txx9_sio_port = ioremap(baseaddr, 0x24);
0421     txx9_prom_putchar = early_txx9_sio_putchar;
0422 }
0423 #endif /* CONFIG_EARLY_PRINTK */
0424 
0425 /* wrappers */
0426 void __init plat_mem_setup(void)
0427 {
0428     ioport_resource.start = 0;
0429     ioport_resource.end = ~0UL; /* no limit */
0430     iomem_resource.start = 0;
0431     iomem_resource.end = ~0UL;  /* no limit */
0432 
0433     /* fallback restart/halt routines */
0434     _machine_restart = (void (*)(char *))txx9_machine_halt;
0435     _machine_halt = txx9_machine_halt;
0436     pm_power_off = txx9_machine_halt;
0437 
0438 #ifdef CONFIG_PCI
0439     pcibios_plat_setup = txx9_pcibios_setup;
0440 #endif
0441     txx9_board_vec->mem_setup();
0442 }
0443 
0444 void __init arch_init_irq(void)
0445 {
0446     txx9_board_vec->irq_setup();
0447 }
0448 
0449 void __init plat_time_init(void)
0450 {
0451 #ifdef CONFIG_CPU_TX49XX
0452     mips_hpt_frequency = txx9_cpu_clock / 2;
0453 #endif
0454     txx9_board_vec->time_init();
0455 }
0456 
0457 static void txx9_clk_init(void)
0458 {
0459     struct clk_hw *hw;
0460     int error;
0461 
0462     hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
0463     if (IS_ERR(hw)) {
0464         error = PTR_ERR(hw);
0465         goto fail;
0466     }
0467 
0468     hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
0469     error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
0470     if (error)
0471         goto fail;
0472 
0473 #ifdef CONFIG_CPU_TX49XX
0474     if (TX4938_REV_PCODE() == 0x4938) {
0475         hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
0476         error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
0477         if (error)
0478             goto fail;
0479     }
0480 #endif
0481 
0482     return;
0483 
0484 fail:
0485     pr_err("Failed to register clocks: %d\n", error);
0486 }
0487 
0488 static int __init _txx9_arch_init(void)
0489 {
0490     txx9_clk_init();
0491 
0492     if (txx9_board_vec->arch_init)
0493         txx9_board_vec->arch_init();
0494     return 0;
0495 }
0496 arch_initcall(_txx9_arch_init);
0497 
0498 static int __init _txx9_device_init(void)
0499 {
0500     if (txx9_board_vec->device_init)
0501         txx9_board_vec->device_init();
0502     return 0;
0503 }
0504 device_initcall(_txx9_device_init);
0505 
0506 int (*txx9_irq_dispatch)(int pending);
0507 asmlinkage void plat_irq_dispatch(void)
0508 {
0509     int pending = read_c0_status() & read_c0_cause() & ST0_IM;
0510     int irq = txx9_irq_dispatch(pending);
0511 
0512     if (likely(irq >= 0))
0513         do_IRQ(irq);
0514     else
0515         spurious_interrupt();
0516 }
0517 
0518 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
0519 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
0520 static unsigned long __swizzle_addr_none(unsigned long port)
0521 {
0522     return port;
0523 }
0524 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
0525 EXPORT_SYMBOL(__swizzle_addr_b);
0526 #endif
0527 
0528 void __init txx9_physmap_flash_init(int no, unsigned long addr,
0529                     unsigned long size,
0530                     const struct physmap_flash_data *pdata)
0531 {
0532 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
0533     struct resource res = {
0534         .start = addr,
0535         .end = addr + size - 1,
0536         .flags = IORESOURCE_MEM,
0537     };
0538     struct platform_device *pdev;
0539     static struct mtd_partition parts[2];
0540     struct physmap_flash_data pdata_part;
0541 
0542     /* If this area contained boot area, make separate partition */
0543     if (pdata->nr_parts == 0 && !pdata->parts &&
0544         addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
0545         !parts[0].name) {
0546         parts[0].name = "boot";
0547         parts[0].offset = 0x1fc00000 - addr;
0548         parts[0].size = addr + size - 0x1fc00000;
0549         parts[1].name = "user";
0550         parts[1].offset = 0;
0551         parts[1].size = 0x1fc00000 - addr;
0552         pdata_part = *pdata;
0553         pdata_part.nr_parts = ARRAY_SIZE(parts);
0554         pdata_part.parts = parts;
0555         pdata = &pdata_part;
0556     }
0557 
0558     pdev = platform_device_alloc("physmap-flash", no);
0559     if (!pdev ||
0560         platform_device_add_resources(pdev, &res, 1) ||
0561         platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
0562         platform_device_add(pdev))
0563         platform_device_put(pdev);
0564 #endif
0565 }
0566 
0567 void __init txx9_ndfmc_init(unsigned long baseaddr,
0568                 const struct txx9ndfmc_platform_data *pdata)
0569 {
0570 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
0571     struct resource res = {
0572         .start = baseaddr,
0573         .end = baseaddr + 0x1000 - 1,
0574         .flags = IORESOURCE_MEM,
0575     };
0576     struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
0577 
0578     if (!pdev ||
0579         platform_device_add_resources(pdev, &res, 1) ||
0580         platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
0581         platform_device_add(pdev))
0582         platform_device_put(pdev);
0583 #endif
0584 }
0585 
0586 #if IS_ENABLED(CONFIG_LEDS_GPIO)
0587 static DEFINE_SPINLOCK(txx9_iocled_lock);
0588 
0589 #define TXX9_IOCLED_MAXLEDS 8
0590 
0591 struct txx9_iocled_data {
0592     struct gpio_chip chip;
0593     u8 cur_val;
0594     void __iomem *mmioaddr;
0595     struct gpio_led_platform_data pdata;
0596     struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
0597     char names[TXX9_IOCLED_MAXLEDS][32];
0598 };
0599 
0600 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
0601 {
0602     struct txx9_iocled_data *data = gpiochip_get_data(chip);
0603     return !!(data->cur_val & (1 << offset));
0604 }
0605 
0606 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
0607                 int value)
0608 {
0609     struct txx9_iocled_data *data = gpiochip_get_data(chip);
0610     unsigned long flags;
0611     spin_lock_irqsave(&txx9_iocled_lock, flags);
0612     if (value)
0613         data->cur_val |= 1 << offset;
0614     else
0615         data->cur_val &= ~(1 << offset);
0616     writeb(data->cur_val, data->mmioaddr);
0617     mmiowb();
0618     spin_unlock_irqrestore(&txx9_iocled_lock, flags);
0619 }
0620 
0621 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
0622 {
0623     return 0;
0624 }
0625 
0626 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
0627                    int value)
0628 {
0629     txx9_iocled_set(chip, offset, value);
0630     return 0;
0631 }
0632 
0633 void __init txx9_iocled_init(unsigned long baseaddr,
0634                  int basenum, unsigned int num, int lowactive,
0635                  const char *color, char **deftriggers)
0636 {
0637     struct txx9_iocled_data *iocled;
0638     struct platform_device *pdev;
0639     int i;
0640     static char *default_triggers[] __initdata = {
0641         "heartbeat",
0642         "disk-activity",
0643         "nand-disk",
0644         NULL,
0645     };
0646 
0647     if (!deftriggers)
0648         deftriggers = default_triggers;
0649     iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
0650     if (!iocled)
0651         return;
0652     iocled->mmioaddr = ioremap(baseaddr, 1);
0653     if (!iocled->mmioaddr)
0654         goto out_free;
0655     iocled->chip.get = txx9_iocled_get;
0656     iocled->chip.set = txx9_iocled_set;
0657     iocled->chip.direction_input = txx9_iocled_dir_in;
0658     iocled->chip.direction_output = txx9_iocled_dir_out;
0659     iocled->chip.label = "iocled";
0660     iocled->chip.base = basenum;
0661     iocled->chip.ngpio = num;
0662     if (gpiochip_add_data(&iocled->chip, iocled))
0663         goto out_unmap;
0664     if (basenum < 0)
0665         basenum = iocled->chip.base;
0666 
0667     pdev = platform_device_alloc("leds-gpio", basenum);
0668     if (!pdev)
0669         goto out_gpio;
0670     iocled->pdata.num_leds = num;
0671     iocled->pdata.leds = iocled->leds;
0672     for (i = 0; i < num; i++) {
0673         struct gpio_led *led = &iocled->leds[i];
0674         snprintf(iocled->names[i], sizeof(iocled->names[i]),
0675              "iocled:%s:%u", color, i);
0676         led->name = iocled->names[i];
0677         led->gpio = basenum + i;
0678         led->active_low = lowactive;
0679         if (deftriggers && *deftriggers)
0680             led->default_trigger = *deftriggers++;
0681     }
0682     pdev->dev.platform_data = &iocled->pdata;
0683     if (platform_device_add(pdev))
0684         goto out_pdev;
0685     return;
0686 
0687 out_pdev:
0688     platform_device_put(pdev);
0689 out_gpio:
0690     gpiochip_remove(&iocled->chip);
0691 out_unmap:
0692     iounmap(iocled->mmioaddr);
0693 out_free:
0694     kfree(iocled);
0695 }
0696 #else /* CONFIG_LEDS_GPIO */
0697 void __init txx9_iocled_init(unsigned long baseaddr,
0698                  int basenum, unsigned int num, int lowactive,
0699                  const char *color, char **deftriggers)
0700 {
0701 }
0702 #endif /* CONFIG_LEDS_GPIO */
0703 
0704 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
0705                const struct txx9dmac_platform_data *pdata)
0706 {
0707 #if IS_ENABLED(CONFIG_TXX9_DMAC)
0708     struct resource res[] = {
0709         {
0710             .start = baseaddr,
0711             .end = baseaddr + 0x800 - 1,
0712             .flags = IORESOURCE_MEM,
0713 #ifndef CONFIG_MACH_TX49XX
0714         }, {
0715             .start = irq,
0716             .flags = IORESOURCE_IRQ,
0717 #endif
0718         }
0719     };
0720 #ifdef CONFIG_MACH_TX49XX
0721     struct resource chan_res[] = {
0722         {
0723             .flags = IORESOURCE_IRQ,
0724         }
0725     };
0726 #endif
0727     struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
0728     struct txx9dmac_chan_platform_data cpdata;
0729     int i;
0730 
0731     if (!pdev ||
0732         platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
0733         platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
0734         platform_device_add(pdev)) {
0735         platform_device_put(pdev);
0736         return;
0737     }
0738     memset(&cpdata, 0, sizeof(cpdata));
0739     cpdata.dmac_dev = pdev;
0740     for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
0741 #ifdef CONFIG_MACH_TX49XX
0742         chan_res[0].start = irq + i;
0743 #endif
0744         pdev = platform_device_alloc("txx9dmac-chan",
0745                          id * TXX9_DMA_MAX_NR_CHANNELS + i);
0746         if (!pdev ||
0747 #ifdef CONFIG_MACH_TX49XX
0748             platform_device_add_resources(pdev, chan_res,
0749                           ARRAY_SIZE(chan_res)) ||
0750 #endif
0751             platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
0752             platform_device_add(pdev))
0753             platform_device_put(pdev);
0754     }
0755 #endif
0756 }
0757 
0758 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
0759                unsigned int dmac_id,
0760                unsigned int dma_chan_out,
0761                unsigned int dma_chan_in)
0762 {
0763 }
0764 
0765 static struct bus_type txx9_sramc_subsys = {
0766     .name = "txx9_sram",
0767     .dev_name = "txx9_sram",
0768 };
0769 
0770 struct txx9_sramc_dev {
0771     struct device dev;
0772     struct bin_attribute bindata_attr;
0773     void __iomem *base;
0774 };
0775 
0776 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
0777                   struct bin_attribute *bin_attr,
0778                   char *buf, loff_t pos, size_t size)
0779 {
0780     struct txx9_sramc_dev *dev = bin_attr->private;
0781     size_t ramsize = bin_attr->size;
0782 
0783     if (pos >= ramsize)
0784         return 0;
0785     if (pos + size > ramsize)
0786         size = ramsize - pos;
0787     memcpy_fromio(buf, dev->base + pos, size);
0788     return size;
0789 }
0790 
0791 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
0792                    struct bin_attribute *bin_attr,
0793                    char *buf, loff_t pos, size_t size)
0794 {
0795     struct txx9_sramc_dev *dev = bin_attr->private;
0796     size_t ramsize = bin_attr->size;
0797 
0798     if (pos >= ramsize)
0799         return 0;
0800     if (pos + size > ramsize)
0801         size = ramsize - pos;
0802     memcpy_toio(dev->base + pos, buf, size);
0803     return size;
0804 }
0805 
0806 static void txx9_device_release(struct device *dev)
0807 {
0808     struct txx9_sramc_dev *tdev;
0809 
0810     tdev = container_of(dev, struct txx9_sramc_dev, dev);
0811     kfree(tdev);
0812 }
0813 
0814 void __init txx9_sramc_init(struct resource *r)
0815 {
0816     struct txx9_sramc_dev *dev;
0817     size_t size;
0818     int err;
0819 
0820     err = subsys_system_register(&txx9_sramc_subsys, NULL);
0821     if (err)
0822         return;
0823     dev = kzalloc(sizeof(*dev), GFP_KERNEL);
0824     if (!dev)
0825         return;
0826     size = resource_size(r);
0827     dev->base = ioremap(r->start, size);
0828     if (!dev->base) {
0829         kfree(dev);
0830         return;
0831     }
0832     dev->dev.release = &txx9_device_release;
0833     dev->dev.bus = &txx9_sramc_subsys;
0834     sysfs_bin_attr_init(&dev->bindata_attr);
0835     dev->bindata_attr.attr.name = "bindata";
0836     dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
0837     dev->bindata_attr.read = txx9_sram_read;
0838     dev->bindata_attr.write = txx9_sram_write;
0839     dev->bindata_attr.size = size;
0840     dev->bindata_attr.private = dev;
0841     err = device_register(&dev->dev);
0842     if (err)
0843         goto exit_put;
0844     err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
0845     if (err) {
0846         iounmap(dev->base);
0847         device_unregister(&dev->dev);
0848     }
0849     return;
0850 exit_put:
0851     iounmap(dev->base);
0852     put_device(&dev->dev);
0853 }
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