2 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
3 * and RBTX49xx patch from CELF patch archive.
5 * 2003-2005 (c) MontaVista Software, Inc.
6 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
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
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>
30 #include <asm/reboot.h>
31 #include <asm/r4kcache.h>
32 #include <asm/sections.h>
33 #include <asm/txx9/generic.h>
34 #include <asm/txx9/pci.h>
35 #include <asm/txx9tmr.h>
36 #include <asm/txx9/ndfmc.h>
37 #include <asm/txx9/dmac.h>
38 #ifdef CONFIG_CPU_TX49XX
39 #include <asm/txx9/tx4938.h>
42 /* EBUSC settings of TX4927, etc. */
43 struct resource txx9_ce_res[8];
44 static char txx9_ce_res_name[8][4]; /* "CEn" */
46 /* pcode, internal register */
47 unsigned int txx9_pcode;
48 char txx9_pcode_str[8];
49 static struct resource txx9_reg_res = {
50 .name = txx9_pcode_str,
51 .flags = IORESOURCE_MEM,
54 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
58 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
59 sprintf(txx9_ce_res_name[i], "CE%d", i);
60 txx9_ce_res[i].flags = IORESOURCE_MEM;
61 txx9_ce_res[i].name = txx9_ce_res_name[i];
65 sprintf(txx9_pcode_str, "TX%x", pcode);
67 txx9_reg_res.start = base & 0xfffffffffULL;
68 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
69 request_resource(&iomem_resource, &txx9_reg_res);
74 unsigned int txx9_master_clock;
75 unsigned int txx9_cpu_clock;
76 unsigned int txx9_gbus_clock;
78 #ifdef CONFIG_CPU_TX39XX
79 /* don't enable by default - see errata */
80 int txx9_ccfg_toeon __initdata;
82 int txx9_ccfg_toeon __initdata = 1;
85 /* Minimum CLK support */
87 struct clk *clk_get(struct device *dev, const char *id)
89 if (!strcmp(id, "spi-baseclk"))
90 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
91 if (!strcmp(id, "imbus_clk"))
92 return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
93 return ERR_PTR(-ENOENT);
95 EXPORT_SYMBOL(clk_get);
97 int clk_enable(struct clk *clk)
101 EXPORT_SYMBOL(clk_enable);
103 void clk_disable(struct clk *clk)
106 EXPORT_SYMBOL(clk_disable);
108 unsigned long clk_get_rate(struct clk *clk)
110 return (unsigned long)clk;
112 EXPORT_SYMBOL(clk_get_rate);
114 void clk_put(struct clk *clk)
117 EXPORT_SYMBOL(clk_put);
121 #ifdef CONFIG_GENERIC_GPIO
122 int gpio_to_irq(unsigned gpio)
126 EXPORT_SYMBOL(gpio_to_irq);
128 int irq_to_gpio(unsigned irq)
132 EXPORT_SYMBOL(irq_to_gpio);
135 #define BOARD_VEC(board) extern struct txx9_board_vec board;
136 #include <asm/txx9/boards.h>
139 struct txx9_board_vec *txx9_board_vec __initdata;
140 static char txx9_system_type[32];
142 static struct txx9_board_vec *board_vecs[] __initdata = {
143 #define BOARD_VEC(board) &board,
144 #include <asm/txx9/boards.h>
148 static struct txx9_board_vec *__init find_board_byname(const char *name)
152 /* search board_vecs table */
153 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
154 if (strstr(board_vecs[i]->system, name))
155 return board_vecs[i];
160 static void __init prom_init_cmdline(void)
164 int i; /* Always ignore the "-c" at argv[0] */
166 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
168 * argc is not a valid number, or argv32 is not a valid
175 argv32 = (int *)fw_arg1;
178 arcs_cmdline[0] = '\0';
180 for (i = 1; i < argc; i++) {
181 char *str = (char *)(long)argv32[i];
183 strcat(arcs_cmdline, " ");
184 if (strchr(str, ' ')) {
185 strcat(arcs_cmdline, "\"");
186 strcat(arcs_cmdline, str);
187 strcat(arcs_cmdline, "\"");
189 strcat(arcs_cmdline, str);
193 static int txx9_ic_disable __initdata;
194 static int txx9_dc_disable __initdata;
196 #if defined(CONFIG_CPU_TX49XX)
197 /* flush all cache on very early stage (before 4k_cache_init) */
198 static void __init early_flush_dcache(void)
200 unsigned int conf = read_c0_config();
201 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
202 unsigned int linesz = 32;
203 unsigned long addr, end;
205 end = INDEX_BASE + dc_size / 4;
207 for (addr = INDEX_BASE; addr < end; addr += linesz) {
208 cache_op(Index_Writeback_Inv_D, addr | 0);
209 cache_op(Index_Writeback_Inv_D, addr | 1);
210 cache_op(Index_Writeback_Inv_D, addr | 2);
211 cache_op(Index_Writeback_Inv_D, addr | 3);
215 static void __init txx9_cache_fixup(void)
219 conf = read_c0_config();
220 /* flush and disable */
221 if (txx9_ic_disable) {
222 conf |= TX49_CONF_IC;
223 write_c0_config(conf);
225 if (txx9_dc_disable) {
226 early_flush_dcache();
227 conf |= TX49_CONF_DC;
228 write_c0_config(conf);
232 conf = read_c0_config();
233 if (!txx9_ic_disable)
234 conf &= ~TX49_CONF_IC;
235 if (!txx9_dc_disable)
236 conf &= ~TX49_CONF_DC;
237 write_c0_config(conf);
239 if (conf & TX49_CONF_IC)
240 pr_info("TX49XX I-Cache disabled.\n");
241 if (conf & TX49_CONF_DC)
242 pr_info("TX49XX D-Cache disabled.\n");
244 #elif defined(CONFIG_CPU_TX39XX)
245 /* flush all cache on very early stage (before tx39_cache_init) */
246 static void __init early_flush_dcache(void)
248 unsigned int conf = read_c0_config();
249 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
250 TX39_CONF_DCS_SHIFT));
251 unsigned int linesz = 16;
252 unsigned long addr, end;
254 end = INDEX_BASE + dc_size / 2;
256 for (addr = INDEX_BASE; addr < end; addr += linesz) {
257 cache_op(Index_Writeback_Inv_D, addr | 0);
258 cache_op(Index_Writeback_Inv_D, addr | 1);
262 static void __init txx9_cache_fixup(void)
266 conf = read_c0_config();
267 /* flush and disable */
268 if (txx9_ic_disable) {
269 conf &= ~TX39_CONF_ICE;
270 write_c0_config(conf);
272 if (txx9_dc_disable) {
273 early_flush_dcache();
274 conf &= ~TX39_CONF_DCE;
275 write_c0_config(conf);
279 conf = read_c0_config();
280 if (!txx9_ic_disable)
281 conf |= TX39_CONF_ICE;
282 if (!txx9_dc_disable)
283 conf |= TX39_CONF_DCE;
284 write_c0_config(conf);
286 if (!(conf & TX39_CONF_ICE))
287 pr_info("TX39XX I-Cache disabled.\n");
288 if (!(conf & TX39_CONF_DCE))
289 pr_info("TX39XX D-Cache disabled.\n");
292 static inline void txx9_cache_fixup(void)
297 static void __init preprocess_cmdline(void)
299 static char cmdline[COMMAND_LINE_SIZE] __initdata;
302 strcpy(cmdline, arcs_cmdline);
304 arcs_cmdline[0] = '\0';
306 char *str = strsep(&s, " ");
307 if (strncmp(str, "board=", 6) == 0) {
308 txx9_board_vec = find_board_byname(str + 6);
310 } else if (strncmp(str, "masterclk=", 10) == 0) {
312 if (strict_strtoul(str + 10, 10, &val) == 0)
313 txx9_master_clock = val;
315 } else if (strcmp(str, "icdisable") == 0) {
318 } else if (strcmp(str, "dcdisable") == 0) {
321 } else if (strcmp(str, "toeoff") == 0) {
324 } else if (strcmp(str, "toeon") == 0) {
329 strcat(arcs_cmdline, " ");
330 strcat(arcs_cmdline, str);
336 static void __init select_board(void)
340 /* first, determine by "board=" argument in preprocess_cmdline() */
343 /* next, determine by "board" envvar */
344 envstr = prom_getenv("board");
346 txx9_board_vec = find_board_byname(envstr);
351 /* select "default" board */
352 #ifdef CONFIG_CPU_TX39XX
353 txx9_board_vec = &jmr3927_vec;
355 #ifdef CONFIG_CPU_TX49XX
356 switch (TX4938_REV_PCODE()) {
357 #ifdef CONFIG_TOSHIBA_RBTX4927
359 txx9_board_vec = &rbtx4927_vec;
362 txx9_board_vec = &rbtx4937_vec;
365 #ifdef CONFIG_TOSHIBA_RBTX4938
367 txx9_board_vec = &rbtx4938_vec;
370 #ifdef CONFIG_TOSHIBA_RBTX4939
372 txx9_board_vec = &rbtx4939_vec;
379 void __init prom_init(void)
382 preprocess_cmdline();
385 strcpy(txx9_system_type, txx9_board_vec->system);
387 txx9_board_vec->prom_init();
390 void __init prom_free_prom_memory(void)
392 unsigned long saddr = PAGE_SIZE;
393 unsigned long eaddr = __pa_symbol(&_text);
396 free_init_pages("prom memory", saddr, eaddr);
399 const char *get_system_type(void)
401 return txx9_system_type;
404 const char *__init prom_getenv(const char *name)
408 if (fw_arg2 < CKSEG0)
411 str = (const s32 *)fw_arg2;
412 /* YAMON style ("name", "value" pairs) */
413 while (str[0] && str[1]) {
414 if (!strcmp((const char *)(unsigned long)str[0], name))
415 return (const char *)(unsigned long)str[1];
421 static void __noreturn txx9_machine_halt(void)
424 clear_c0_status(ST0_IM);
428 if (cpu_has_counter) {
430 * Clear counter interrupt while it
431 * breaks WAIT instruction even if
440 /* Watchdog support */
441 void __init txx9_wdt_init(unsigned long base)
443 struct resource res = {
445 .end = base + 0x100 - 1,
446 .flags = IORESOURCE_MEM,
448 platform_device_register_simple("txx9wdt", -1, &res, 1);
451 void txx9_wdt_now(unsigned long base)
453 struct txx9_tmr_reg __iomem *tmrptr =
454 ioremap(base, sizeof(struct txx9_tmr_reg));
455 /* disable watch dog timer */
456 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
457 __raw_writel(0, &tmrptr->tcr);
459 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
460 __raw_writel(1, &tmrptr->cpra); /* immediate */
461 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
466 void __init txx9_spi_init(int busid, unsigned long base, int irq)
468 struct resource res[] = {
471 .end = base + 0x20 - 1,
472 .flags = IORESOURCE_MEM,
475 .flags = IORESOURCE_IRQ,
478 platform_device_register_simple("spi_txx9", busid,
479 res, ARRAY_SIZE(res));
482 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
484 struct platform_device *pdev =
485 platform_device_alloc("tc35815-mac", id);
487 platform_device_add_data(pdev, ethaddr, 6) ||
488 platform_device_add(pdev))
489 platform_device_put(pdev);
492 void __init txx9_sio_init(unsigned long baseaddr, int irq,
493 unsigned int line, unsigned int sclk, int nocts)
495 #ifdef CONFIG_SERIAL_TXX9
496 struct uart_port req;
498 memset(&req, 0, sizeof(req));
500 req.iotype = UPIO_MEM;
501 req.membase = ioremap(baseaddr, 0x24);
502 req.mapbase = baseaddr;
505 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
507 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
510 req.uartclk = TXX9_IMCLK;
511 early_serial_txx9_setup(&req);
512 #endif /* CONFIG_SERIAL_TXX9 */
515 #ifdef CONFIG_EARLY_PRINTK
516 static void null_prom_putchar(char c)
519 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
521 void prom_putchar(char c)
523 txx9_prom_putchar(c);
526 static void __iomem *early_txx9_sio_port;
528 static void early_txx9_sio_putchar(char c)
530 #define TXX9_SICISR 0x0c
531 #define TXX9_SITFIFO 0x1c
532 #define TXX9_SICISR_TXALS 0x00000002
533 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
536 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
539 void __init txx9_sio_putchar_init(unsigned long baseaddr)
541 early_txx9_sio_port = ioremap(baseaddr, 0x24);
542 txx9_prom_putchar = early_txx9_sio_putchar;
544 #endif /* CONFIG_EARLY_PRINTK */
547 void __init plat_mem_setup(void)
549 ioport_resource.start = 0;
550 ioport_resource.end = ~0UL; /* no limit */
551 iomem_resource.start = 0;
552 iomem_resource.end = ~0UL; /* no limit */
554 /* fallback restart/halt routines */
555 _machine_restart = (void (*)(char *))txx9_machine_halt;
556 _machine_halt = txx9_machine_halt;
557 pm_power_off = txx9_machine_halt;
560 pcibios_plat_setup = txx9_pcibios_setup;
562 txx9_board_vec->mem_setup();
565 void __init arch_init_irq(void)
567 txx9_board_vec->irq_setup();
570 void __init plat_time_init(void)
572 #ifdef CONFIG_CPU_TX49XX
573 mips_hpt_frequency = txx9_cpu_clock / 2;
575 txx9_board_vec->time_init();
578 static int __init _txx9_arch_init(void)
580 if (txx9_board_vec->arch_init)
581 txx9_board_vec->arch_init();
584 arch_initcall(_txx9_arch_init);
586 static int __init _txx9_device_init(void)
588 if (txx9_board_vec->device_init)
589 txx9_board_vec->device_init();
592 device_initcall(_txx9_device_init);
594 int (*txx9_irq_dispatch)(int pending);
595 asmlinkage void plat_irq_dispatch(void)
597 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
598 int irq = txx9_irq_dispatch(pending);
600 if (likely(irq >= 0))
603 spurious_interrupt();
606 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
607 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
608 static unsigned long __swizzle_addr_none(unsigned long port)
612 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
613 EXPORT_SYMBOL(__swizzle_addr_b);
616 #ifdef NEEDS_TXX9_IOSWABW
617 static u16 ioswabw_default(volatile u16 *a, u16 x)
619 return le16_to_cpu(x);
621 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
625 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
626 EXPORT_SYMBOL(ioswabw);
627 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
628 EXPORT_SYMBOL(__mem_ioswabw);
631 void __init txx9_physmap_flash_init(int no, unsigned long addr,
633 const struct physmap_flash_data *pdata)
635 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
636 struct resource res = {
638 .end = addr + size - 1,
639 .flags = IORESOURCE_MEM,
641 struct platform_device *pdev;
642 static struct mtd_partition parts[2];
643 struct physmap_flash_data pdata_part;
645 /* If this area contained boot area, make separate partition */
646 if (pdata->nr_parts == 0 && !pdata->parts &&
647 addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
649 parts[0].name = "boot";
650 parts[0].offset = 0x1fc00000 - addr;
651 parts[0].size = addr + size - 0x1fc00000;
652 parts[1].name = "user";
654 parts[1].size = 0x1fc00000 - addr;
656 pdata_part.nr_parts = ARRAY_SIZE(parts);
657 pdata_part.parts = parts;
661 pdev = platform_device_alloc("physmap-flash", no);
663 platform_device_add_resources(pdev, &res, 1) ||
664 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
665 platform_device_add(pdev))
666 platform_device_put(pdev);
670 void __init txx9_ndfmc_init(unsigned long baseaddr,
671 const struct txx9ndfmc_platform_data *pdata)
673 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
674 struct resource res = {
676 .end = baseaddr + 0x1000 - 1,
677 .flags = IORESOURCE_MEM,
679 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
682 platform_device_add_resources(pdev, &res, 1) ||
683 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
684 platform_device_add(pdev))
685 platform_device_put(pdev);
689 #if IS_ENABLED(CONFIG_LEDS_GPIO)
690 static DEFINE_SPINLOCK(txx9_iocled_lock);
692 #define TXX9_IOCLED_MAXLEDS 8
694 struct txx9_iocled_data {
695 struct gpio_chip chip;
697 void __iomem *mmioaddr;
698 struct gpio_led_platform_data pdata;
699 struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
700 char names[TXX9_IOCLED_MAXLEDS][32];
703 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
705 struct txx9_iocled_data *data =
706 container_of(chip, struct txx9_iocled_data, chip);
707 return data->cur_val & (1 << offset);
710 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
713 struct txx9_iocled_data *data =
714 container_of(chip, struct txx9_iocled_data, chip);
716 spin_lock_irqsave(&txx9_iocled_lock, flags);
718 data->cur_val |= 1 << offset;
720 data->cur_val &= ~(1 << offset);
721 writeb(data->cur_val, data->mmioaddr);
723 spin_unlock_irqrestore(&txx9_iocled_lock, flags);
726 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
731 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
734 txx9_iocled_set(chip, offset, value);
738 void __init txx9_iocled_init(unsigned long baseaddr,
739 int basenum, unsigned int num, int lowactive,
740 const char *color, char **deftriggers)
742 struct txx9_iocled_data *iocled;
743 struct platform_device *pdev;
745 static char *default_triggers[] __initdata = {
753 deftriggers = default_triggers;
754 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
757 iocled->mmioaddr = ioremap(baseaddr, 1);
758 if (!iocled->mmioaddr)
760 iocled->chip.get = txx9_iocled_get;
761 iocled->chip.set = txx9_iocled_set;
762 iocled->chip.direction_input = txx9_iocled_dir_in;
763 iocled->chip.direction_output = txx9_iocled_dir_out;
764 iocled->chip.label = "iocled";
765 iocled->chip.base = basenum;
766 iocled->chip.ngpio = num;
767 if (gpiochip_add(&iocled->chip))
770 basenum = iocled->chip.base;
772 pdev = platform_device_alloc("leds-gpio", basenum);
775 iocled->pdata.num_leds = num;
776 iocled->pdata.leds = iocled->leds;
777 for (i = 0; i < num; i++) {
778 struct gpio_led *led = &iocled->leds[i];
779 snprintf(iocled->names[i], sizeof(iocled->names[i]),
780 "iocled:%s:%u", color, i);
781 led->name = iocled->names[i];
782 led->gpio = basenum + i;
783 led->active_low = lowactive;
784 if (deftriggers && *deftriggers)
785 led->default_trigger = *deftriggers++;
787 pdev->dev.platform_data = &iocled->pdata;
788 if (platform_device_add(pdev))
792 platform_device_put(pdev);
794 if (gpiochip_remove(&iocled->chip))
797 iounmap(iocled->mmioaddr);
801 #else /* CONFIG_LEDS_GPIO */
802 void __init txx9_iocled_init(unsigned long baseaddr,
803 int basenum, unsigned int num, int lowactive,
804 const char *color, char **deftriggers)
807 #endif /* CONFIG_LEDS_GPIO */
809 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
810 const struct txx9dmac_platform_data *pdata)
812 #if IS_ENABLED(CONFIG_TXX9_DMAC)
813 struct resource res[] = {
816 .end = baseaddr + 0x800 - 1,
817 .flags = IORESOURCE_MEM,
818 #ifndef CONFIG_MACH_TX49XX
821 .flags = IORESOURCE_IRQ,
825 #ifdef CONFIG_MACH_TX49XX
826 struct resource chan_res[] = {
828 .flags = IORESOURCE_IRQ,
832 struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
833 struct txx9dmac_chan_platform_data cpdata;
837 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
838 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
839 platform_device_add(pdev)) {
840 platform_device_put(pdev);
843 memset(&cpdata, 0, sizeof(cpdata));
844 cpdata.dmac_dev = pdev;
845 for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
846 #ifdef CONFIG_MACH_TX49XX
847 chan_res[0].start = irq + i;
849 pdev = platform_device_alloc("txx9dmac-chan",
850 id * TXX9_DMA_MAX_NR_CHANNELS + i);
852 #ifdef CONFIG_MACH_TX49XX
853 platform_device_add_resources(pdev, chan_res,
854 ARRAY_SIZE(chan_res)) ||
856 platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
857 platform_device_add(pdev))
858 platform_device_put(pdev);
863 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
864 unsigned int dmac_id,
865 unsigned int dma_chan_out,
866 unsigned int dma_chan_in)
868 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
869 unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
870 struct resource res[] = {
873 .end = baseaddr + 0x100 - 1,
874 .flags = IORESOURCE_MEM,
877 .flags = IORESOURCE_IRQ,
879 .name = "txx9dmac-chan",
880 .start = dma_base + dma_chan_out,
881 .flags = IORESOURCE_DMA,
883 .name = "txx9dmac-chan",
884 .start = dma_base + dma_chan_in,
885 .flags = IORESOURCE_DMA,
888 struct platform_device *pdev =
889 platform_device_alloc("txx9aclc-ac97", -1);
892 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
893 platform_device_add(pdev))
894 platform_device_put(pdev);
898 static struct bus_type txx9_sramc_subsys = {
900 .dev_name = "txx9_sram",
903 struct txx9_sramc_dev {
905 struct bin_attribute bindata_attr;
909 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
910 struct bin_attribute *bin_attr,
911 char *buf, loff_t pos, size_t size)
913 struct txx9_sramc_dev *dev = bin_attr->private;
914 size_t ramsize = bin_attr->size;
918 if (pos + size > ramsize)
919 size = ramsize - pos;
920 memcpy_fromio(buf, dev->base + pos, size);
924 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
925 struct bin_attribute *bin_attr,
926 char *buf, loff_t pos, size_t size)
928 struct txx9_sramc_dev *dev = bin_attr->private;
929 size_t ramsize = bin_attr->size;
933 if (pos + size > ramsize)
934 size = ramsize - pos;
935 memcpy_toio(dev->base + pos, buf, size);
939 void __init txx9_sramc_init(struct resource *r)
941 struct txx9_sramc_dev *dev;
945 err = subsys_system_register(&txx9_sramc_subsys, NULL);
948 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
951 size = resource_size(r);
952 dev->base = ioremap(r->start, size);
955 dev->dev.bus = &txx9_sramc_subsys;
956 sysfs_bin_attr_init(&dev->bindata_attr);
957 dev->bindata_attr.attr.name = "bindata";
958 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
959 dev->bindata_attr.read = txx9_sram_read;
960 dev->bindata_attr.write = txx9_sram_write;
961 dev->bindata_attr.size = size;
962 dev->bindata_attr.private = dev;
963 err = device_register(&dev->dev);
966 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
968 device_unregister(&dev->dev);