xref: /linux/arch/mips/txx9/generic/setup.c (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80)
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. */
46 struct resource txx9_ce_res[8];
47 static char txx9_ce_res_name[8][4];	/* "CEn" */
48 
49 /* pcode, internal register */
50 unsigned int txx9_pcode;
51 char txx9_pcode_str[8];
52 static struct resource txx9_reg_res = {
53 	.name = txx9_pcode_str,
54 	.flags = IORESOURCE_MEM,
55 };
56 void __init
txx9_reg_res_init(unsigned int pcode,unsigned long base,unsigned long size)57 txx9_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 */
77 unsigned int txx9_master_clock;
78 unsigned int txx9_cpu_clock;
79 unsigned int txx9_gbus_clock;
80 
81 int txx9_ccfg_toeon __initdata = 1;
82 
83 #define BOARD_VEC(board)	extern struct txx9_board_vec board;
84 #include <asm/txx9/boards.h>
85 #undef BOARD_VEC
86 
87 struct txx9_board_vec *txx9_board_vec __initdata;
88 static char txx9_system_type[32];
89 
90 static struct txx9_board_vec *board_vecs[] __initdata = {
91 #define BOARD_VEC(board)	&board,
92 #include <asm/txx9/boards.h>
93 #undef BOARD_VEC
94 };
95 
find_board_byname(const char * name)96 static struct txx9_board_vec *__init find_board_byname(const char *name)
97 {
98 	int i;
99 
100 	/* search board_vecs table */
101 	for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
102 		if (strstr(board_vecs[i]->system, name))
103 			return board_vecs[i];
104 	}
105 	return NULL;
106 }
107 
prom_init_cmdline(void)108 static void __init prom_init_cmdline(void)
109 {
110 	int argc;
111 	int *argv32;
112 	int i;			/* Always ignore the "-c" at argv[0] */
113 
114 	if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
115 		/*
116 		 * argc is not a valid number, or argv32 is not a valid
117 		 * pointer
118 		 */
119 		argc = 0;
120 		argv32 = NULL;
121 	} else {
122 		argc = (int)fw_arg0;
123 		argv32 = (int *)fw_arg1;
124 	}
125 
126 	arcs_cmdline[0] = '\0';
127 
128 	for (i = 1; i < argc; i++) {
129 		char *str = (char *)(long)argv32[i];
130 		if (i != 1)
131 			strcat(arcs_cmdline, " ");
132 		if (strchr(str, ' ')) {
133 			strcat(arcs_cmdline, "\"");
134 			strcat(arcs_cmdline, str);
135 			strcat(arcs_cmdline, "\"");
136 		} else
137 			strcat(arcs_cmdline, str);
138 	}
139 }
140 
141 static int txx9_ic_disable __initdata;
142 static int txx9_dc_disable __initdata;
143 
144 #if defined(CONFIG_CPU_TX49XX)
145 /* flush all cache on very early stage (before 4k_cache_init) */
early_flush_dcache(void)146 static void __init early_flush_dcache(void)
147 {
148 	unsigned int conf = read_c0_config();
149 	unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
150 	unsigned int linesz = 32;
151 	unsigned long addr, end;
152 
153 	end = INDEX_BASE + dc_size / 4;
154 	/* 4way, waybit=0 */
155 	for (addr = INDEX_BASE; addr < end; addr += linesz) {
156 		cache_op(Index_Writeback_Inv_D, addr | 0);
157 		cache_op(Index_Writeback_Inv_D, addr | 1);
158 		cache_op(Index_Writeback_Inv_D, addr | 2);
159 		cache_op(Index_Writeback_Inv_D, addr | 3);
160 	}
161 }
162 
txx9_cache_fixup(void)163 static void __init txx9_cache_fixup(void)
164 {
165 	unsigned int conf;
166 
167 	conf = read_c0_config();
168 	/* flush and disable */
169 	if (txx9_ic_disable) {
170 		conf |= TX49_CONF_IC;
171 		write_c0_config(conf);
172 	}
173 	if (txx9_dc_disable) {
174 		early_flush_dcache();
175 		conf |= TX49_CONF_DC;
176 		write_c0_config(conf);
177 	}
178 
179 	/* enable cache */
180 	conf = read_c0_config();
181 	if (!txx9_ic_disable)
182 		conf &= ~TX49_CONF_IC;
183 	if (!txx9_dc_disable)
184 		conf &= ~TX49_CONF_DC;
185 	write_c0_config(conf);
186 
187 	if (conf & TX49_CONF_IC)
188 		pr_info("TX49XX I-Cache disabled.\n");
189 	if (conf & TX49_CONF_DC)
190 		pr_info("TX49XX D-Cache disabled.\n");
191 }
192 #else
txx9_cache_fixup(void)193 static inline void txx9_cache_fixup(void)
194 {
195 }
196 #endif
197 
preprocess_cmdline(void)198 static void __init preprocess_cmdline(void)
199 {
200 	static char cmdline[COMMAND_LINE_SIZE] __initdata;
201 	char *s;
202 
203 	strcpy(cmdline, arcs_cmdline);
204 	s = cmdline;
205 	arcs_cmdline[0] = '\0';
206 	while (s && *s) {
207 		char *str = strsep(&s, " ");
208 		if (strncmp(str, "board=", 6) == 0) {
209 			txx9_board_vec = find_board_byname(str + 6);
210 			continue;
211 		} else if (strncmp(str, "masterclk=", 10) == 0) {
212 			unsigned int val;
213 			if (kstrtouint(str + 10, 10, &val) == 0)
214 				txx9_master_clock = val;
215 			continue;
216 		} else if (strcmp(str, "icdisable") == 0) {
217 			txx9_ic_disable = 1;
218 			continue;
219 		} else if (strcmp(str, "dcdisable") == 0) {
220 			txx9_dc_disable = 1;
221 			continue;
222 		} else if (strcmp(str, "toeoff") == 0) {
223 			txx9_ccfg_toeon = 0;
224 			continue;
225 		} else if (strcmp(str, "toeon") == 0) {
226 			txx9_ccfg_toeon = 1;
227 			continue;
228 		}
229 		if (arcs_cmdline[0])
230 			strcat(arcs_cmdline, " ");
231 		strcat(arcs_cmdline, str);
232 	}
233 
234 	txx9_cache_fixup();
235 }
236 
select_board(void)237 static void __init select_board(void)
238 {
239 	const char *envstr;
240 
241 	/* first, determine by "board=" argument in preprocess_cmdline() */
242 	if (txx9_board_vec)
243 		return;
244 	/* next, determine by "board" envvar */
245 	envstr = prom_getenv("board");
246 	if (envstr) {
247 		txx9_board_vec = find_board_byname(envstr);
248 		if (txx9_board_vec)
249 			return;
250 	}
251 
252 	/* select "default" board */
253 #ifdef CONFIG_CPU_TX49XX
254 	switch (TX4938_REV_PCODE()) {
255 #ifdef CONFIG_TOSHIBA_RBTX4927
256 	case 0x4927:
257 		txx9_board_vec = &rbtx4927_vec;
258 		break;
259 	case 0x4937:
260 		txx9_board_vec = &rbtx4937_vec;
261 		break;
262 #endif
263 	}
264 #endif
265 }
266 
prom_init(void)267 void __init prom_init(void)
268 {
269 	prom_init_cmdline();
270 	preprocess_cmdline();
271 	select_board();
272 
273 	strcpy(txx9_system_type, txx9_board_vec->system);
274 
275 	txx9_board_vec->prom_init();
276 }
277 
get_system_type(void)278 const char *get_system_type(void)
279 {
280 	return txx9_system_type;
281 }
282 
prom_getenv(const char * name)283 const char *__init prom_getenv(const char *name)
284 {
285 	const s32 *str;
286 
287 	if (fw_arg2 < CKSEG0)
288 		return NULL;
289 
290 	str = (const s32 *)fw_arg2;
291 	/* YAMON style ("name", "value" pairs) */
292 	while (str[0] && str[1]) {
293 		if (!strcmp((const char *)(unsigned long)str[0], name))
294 			return (const char *)(unsigned long)str[1];
295 		str += 2;
296 	}
297 	return NULL;
298 }
299 
txx9_machine_halt(void)300 static void __noreturn txx9_machine_halt(void)
301 {
302 	local_irq_disable();
303 	clear_c0_status(ST0_IM);
304 	while (1) {
305 		if (cpu_wait) {
306 			(*cpu_wait)();
307 			if (cpu_has_counter) {
308 				/*
309 				 * Clear counter interrupt while it
310 				 * breaks WAIT instruction even if
311 				 * masked.
312 				 */
313 				write_c0_compare(0);
314 			}
315 		}
316 	}
317 }
318 
319 /* Watchdog support */
txx9_wdt_init(unsigned long base)320 void __init txx9_wdt_init(unsigned long base)
321 {
322 	struct resource res = {
323 		.start	= base,
324 		.end	= base + 0x100 - 1,
325 		.flags	= IORESOURCE_MEM,
326 	};
327 	platform_device_register_simple("txx9wdt", -1, &res, 1);
328 }
329 
txx9_wdt_now(unsigned long base)330 void txx9_wdt_now(unsigned long base)
331 {
332 	struct txx9_tmr_reg __iomem *tmrptr =
333 		ioremap(base, sizeof(struct txx9_tmr_reg));
334 	/* disable watch dog timer */
335 	__raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
336 	__raw_writel(0, &tmrptr->tcr);
337 	/* kick watchdog */
338 	__raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
339 	__raw_writel(1, &tmrptr->cpra); /* immediate */
340 	__raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
341 		     &tmrptr->tcr);
342 }
343 
344 /* SPI support */
txx9_spi_init(int busid,unsigned long base,int irq)345 void __init txx9_spi_init(int busid, unsigned long base, int irq)
346 {
347 	struct resource res[] = {
348 		{
349 			.start	= base,
350 			.end	= base + 0x20 - 1,
351 			.flags	= IORESOURCE_MEM,
352 		}, {
353 			.start	= irq,
354 			.flags	= IORESOURCE_IRQ,
355 		},
356 	};
357 	platform_device_register_simple("spi_txx9", busid,
358 					res, ARRAY_SIZE(res));
359 }
360 
txx9_ethaddr_init(unsigned int id,unsigned char * ethaddr)361 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
362 {
363 	struct platform_device *pdev =
364 		platform_device_alloc("tc35815-mac", id);
365 	if (!pdev ||
366 	    platform_device_add_data(pdev, ethaddr, 6) ||
367 	    platform_device_add(pdev))
368 		platform_device_put(pdev);
369 }
370 
txx9_sio_init(unsigned long baseaddr,int irq,unsigned int line,unsigned int sclk,int nocts)371 void __init txx9_sio_init(unsigned long baseaddr, int irq,
372 			  unsigned int line, unsigned int sclk, int nocts)
373 {
374 #ifdef CONFIG_SERIAL_TXX9
375 	struct uart_port req;
376 
377 	memset(&req, 0, sizeof(req));
378 	req.line = line;
379 	req.iotype = UPIO_MEM;
380 	req.membase = ioremap(baseaddr, 0x24);
381 	req.mapbase = baseaddr;
382 	req.irq = irq;
383 	if (!nocts)
384 		req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
385 	if (sclk) {
386 		req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
387 		req.uartclk = sclk;
388 	} else
389 		req.uartclk = TXX9_IMCLK;
390 	early_serial_txx9_setup(&req);
391 #endif /* CONFIG_SERIAL_TXX9 */
392 }
393 
394 #ifdef CONFIG_EARLY_PRINTK
null_prom_putchar(char c)395 static void null_prom_putchar(char c)
396 {
397 }
398 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
399 
prom_putchar(char c)400 void prom_putchar(char c)
401 {
402 	txx9_prom_putchar(c);
403 }
404 
405 static void __iomem *early_txx9_sio_port;
406 
early_txx9_sio_putchar(char c)407 static void early_txx9_sio_putchar(char c)
408 {
409 #define TXX9_SICISR	0x0c
410 #define TXX9_SITFIFO	0x1c
411 #define TXX9_SICISR_TXALS	0x00000002
412 	while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
413 		 TXX9_SICISR_TXALS))
414 		;
415 	__raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
416 }
417 
txx9_sio_putchar_init(unsigned long baseaddr)418 void __init txx9_sio_putchar_init(unsigned long baseaddr)
419 {
420 	early_txx9_sio_port = ioremap(baseaddr, 0x24);
421 	txx9_prom_putchar = early_txx9_sio_putchar;
422 }
423 #endif /* CONFIG_EARLY_PRINTK */
424 
425 /* wrappers */
plat_mem_setup(void)426 void __init plat_mem_setup(void)
427 {
428 	ioport_resource.start = 0;
429 	ioport_resource.end = ~0UL;	/* no limit */
430 	iomem_resource.start = 0;
431 	iomem_resource.end = ~0UL;	/* no limit */
432 
433 	/* fallback restart/halt routines */
434 	_machine_restart = (void (*)(char *))txx9_machine_halt;
435 	_machine_halt = txx9_machine_halt;
436 	pm_power_off = txx9_machine_halt;
437 
438 #ifdef CONFIG_PCI
439 	pcibios_plat_setup = txx9_pcibios_setup;
440 #endif
441 	txx9_board_vec->mem_setup();
442 }
443 
arch_init_irq(void)444 void __init arch_init_irq(void)
445 {
446 	txx9_board_vec->irq_setup();
447 }
448 
plat_time_init(void)449 void __init plat_time_init(void)
450 {
451 #ifdef CONFIG_CPU_TX49XX
452 	mips_hpt_frequency = txx9_cpu_clock / 2;
453 #endif
454 	txx9_board_vec->time_init();
455 }
456 
txx9_clk_init(void)457 static void txx9_clk_init(void)
458 {
459 	struct clk_hw *hw;
460 	int error;
461 
462 	hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
463 	if (IS_ERR(hw)) {
464 		error = PTR_ERR(hw);
465 		goto fail;
466 	}
467 
468 	hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
469 	error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
470 	if (error)
471 		goto fail;
472 
473 #ifdef CONFIG_CPU_TX49XX
474 	if (TX4938_REV_PCODE() == 0x4938) {
475 		hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
476 		error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
477 		if (error)
478 			goto fail;
479 	}
480 #endif
481 
482 	return;
483 
484 fail:
485 	pr_err("Failed to register clocks: %d\n", error);
486 }
487 
_txx9_arch_init(void)488 static int __init _txx9_arch_init(void)
489 {
490 	txx9_clk_init();
491 
492 	if (txx9_board_vec->arch_init)
493 		txx9_board_vec->arch_init();
494 	return 0;
495 }
496 arch_initcall(_txx9_arch_init);
497 
_txx9_device_init(void)498 static int __init _txx9_device_init(void)
499 {
500 	if (txx9_board_vec->device_init)
501 		txx9_board_vec->device_init();
502 	return 0;
503 }
504 device_initcall(_txx9_device_init);
505 
506 int (*txx9_irq_dispatch)(int pending);
plat_irq_dispatch(void)507 asmlinkage void plat_irq_dispatch(void)
508 {
509 	int pending = read_c0_status() & read_c0_cause() & ST0_IM;
510 	int irq = txx9_irq_dispatch(pending);
511 
512 	if (likely(irq >= 0))
513 		do_IRQ(irq);
514 	else
515 		spurious_interrupt();
516 }
517 
518 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
519 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
__swizzle_addr_none(unsigned long port)520 static unsigned long __swizzle_addr_none(unsigned long port)
521 {
522 	return port;
523 }
524 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
525 EXPORT_SYMBOL(__swizzle_addr_b);
526 #endif
527 
txx9_physmap_flash_init(int no,unsigned long addr,unsigned long size,const struct physmap_flash_data * pdata)528 void __init txx9_physmap_flash_init(int no, unsigned long addr,
529 				    unsigned long size,
530 				    const struct physmap_flash_data *pdata)
531 {
532 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
533 	struct resource res = {
534 		.start = addr,
535 		.end = addr + size - 1,
536 		.flags = IORESOURCE_MEM,
537 	};
538 	struct platform_device *pdev;
539 	static struct mtd_partition parts[2];
540 	struct physmap_flash_data pdata_part;
541 
542 	/* If this area contained boot area, make separate partition */
543 	if (pdata->nr_parts == 0 && !pdata->parts &&
544 	    addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
545 	    !parts[0].name) {
546 		parts[0].name = "boot";
547 		parts[0].offset = 0x1fc00000 - addr;
548 		parts[0].size = addr + size - 0x1fc00000;
549 		parts[1].name = "user";
550 		parts[1].offset = 0;
551 		parts[1].size = 0x1fc00000 - addr;
552 		pdata_part = *pdata;
553 		pdata_part.nr_parts = ARRAY_SIZE(parts);
554 		pdata_part.parts = parts;
555 		pdata = &pdata_part;
556 	}
557 
558 	pdev = platform_device_alloc("physmap-flash", no);
559 	if (!pdev ||
560 	    platform_device_add_resources(pdev, &res, 1) ||
561 	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
562 	    platform_device_add(pdev))
563 		platform_device_put(pdev);
564 #endif
565 }
566 
txx9_ndfmc_init(unsigned long baseaddr,const struct txx9ndfmc_platform_data * pdata)567 void __init txx9_ndfmc_init(unsigned long baseaddr,
568 			    const struct txx9ndfmc_platform_data *pdata)
569 {
570 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
571 	struct resource res = {
572 		.start = baseaddr,
573 		.end = baseaddr + 0x1000 - 1,
574 		.flags = IORESOURCE_MEM,
575 	};
576 	struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
577 
578 	if (!pdev ||
579 	    platform_device_add_resources(pdev, &res, 1) ||
580 	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
581 	    platform_device_add(pdev))
582 		platform_device_put(pdev);
583 #endif
584 }
585 
586 #if IS_ENABLED(CONFIG_LEDS_GPIO)
587 static DEFINE_SPINLOCK(txx9_iocled_lock);
588 
589 #define TXX9_IOCLED_MAXLEDS 8
590 
591 struct txx9_iocled_data {
592 	struct gpio_chip chip;
593 	u8 cur_val;
594 	void __iomem *mmioaddr;
595 	struct gpio_led_platform_data pdata;
596 	struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
597 	char names[TXX9_IOCLED_MAXLEDS][32];
598 };
599 
txx9_iocled_get(struct gpio_chip * chip,unsigned int offset)600 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
601 {
602 	struct txx9_iocled_data *data = gpiochip_get_data(chip);
603 	return !!(data->cur_val & (1 << offset));
604 }
605 
txx9_iocled_set(struct gpio_chip * chip,unsigned int offset,int value)606 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
607 			    int value)
608 {
609 	struct txx9_iocled_data *data = gpiochip_get_data(chip);
610 	unsigned long flags;
611 	spin_lock_irqsave(&txx9_iocled_lock, flags);
612 	if (value)
613 		data->cur_val |= 1 << offset;
614 	else
615 		data->cur_val &= ~(1 << offset);
616 	writeb(data->cur_val, data->mmioaddr);
617 	mmiowb();
618 	spin_unlock_irqrestore(&txx9_iocled_lock, flags);
619 }
620 
txx9_iocled_dir_in(struct gpio_chip * chip,unsigned int offset)621 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
622 {
623 	return 0;
624 }
625 
txx9_iocled_dir_out(struct gpio_chip * chip,unsigned int offset,int value)626 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
627 			       int value)
628 {
629 	txx9_iocled_set(chip, offset, value);
630 	return 0;
631 }
632 
txx9_iocled_init(unsigned long baseaddr,int basenum,unsigned int num,int lowactive,const char * color,char ** deftriggers)633 void __init txx9_iocled_init(unsigned long baseaddr,
634 			     int basenum, unsigned int num, int lowactive,
635 			     const char *color, char **deftriggers)
636 {
637 	struct txx9_iocled_data *iocled;
638 	struct platform_device *pdev;
639 	int i;
640 	static char *default_triggers[] __initdata = {
641 		"heartbeat",
642 		"disk-activity",
643 		"nand-disk",
644 		NULL,
645 	};
646 
647 	if (!deftriggers)
648 		deftriggers = default_triggers;
649 	iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
650 	if (!iocled)
651 		return;
652 	iocled->mmioaddr = ioremap(baseaddr, 1);
653 	if (!iocled->mmioaddr)
654 		goto out_free;
655 	iocled->chip.get = txx9_iocled_get;
656 	iocled->chip.set = txx9_iocled_set;
657 	iocled->chip.direction_input = txx9_iocled_dir_in;
658 	iocled->chip.direction_output = txx9_iocled_dir_out;
659 	iocled->chip.label = "iocled";
660 	iocled->chip.base = basenum;
661 	iocled->chip.ngpio = num;
662 	if (gpiochip_add_data(&iocled->chip, iocled))
663 		goto out_unmap;
664 	if (basenum < 0)
665 		basenum = iocled->chip.base;
666 
667 	pdev = platform_device_alloc("leds-gpio", basenum);
668 	if (!pdev)
669 		goto out_gpio;
670 	iocled->pdata.num_leds = num;
671 	iocled->pdata.leds = iocled->leds;
672 	for (i = 0; i < num; i++) {
673 		struct gpio_led *led = &iocled->leds[i];
674 		snprintf(iocled->names[i], sizeof(iocled->names[i]),
675 			 "iocled:%s:%u", color, i);
676 		led->name = iocled->names[i];
677 		led->gpio = basenum + i;
678 		led->active_low = lowactive;
679 		if (deftriggers && *deftriggers)
680 			led->default_trigger = *deftriggers++;
681 	}
682 	pdev->dev.platform_data = &iocled->pdata;
683 	if (platform_device_add(pdev))
684 		goto out_pdev;
685 	return;
686 
687 out_pdev:
688 	platform_device_put(pdev);
689 out_gpio:
690 	gpiochip_remove(&iocled->chip);
691 out_unmap:
692 	iounmap(iocled->mmioaddr);
693 out_free:
694 	kfree(iocled);
695 }
696 #else /* CONFIG_LEDS_GPIO */
txx9_iocled_init(unsigned long baseaddr,int basenum,unsigned int num,int lowactive,const char * color,char ** deftriggers)697 void __init txx9_iocled_init(unsigned long baseaddr,
698 			     int basenum, unsigned int num, int lowactive,
699 			     const char *color, char **deftriggers)
700 {
701 }
702 #endif /* CONFIG_LEDS_GPIO */
703 
txx9_dmac_init(int id,unsigned long baseaddr,int irq,const struct txx9dmac_platform_data * pdata)704 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
705 			   const struct txx9dmac_platform_data *pdata)
706 {
707 #if IS_ENABLED(CONFIG_TXX9_DMAC)
708 	struct resource res[] = {
709 		{
710 			.start = baseaddr,
711 			.end = baseaddr + 0x800 - 1,
712 			.flags = IORESOURCE_MEM,
713 #ifndef CONFIG_MACH_TX49XX
714 		}, {
715 			.start = irq,
716 			.flags = IORESOURCE_IRQ,
717 #endif
718 		}
719 	};
720 #ifdef CONFIG_MACH_TX49XX
721 	struct resource chan_res[] = {
722 		{
723 			.flags = IORESOURCE_IRQ,
724 		}
725 	};
726 #endif
727 	struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
728 	struct txx9dmac_chan_platform_data cpdata;
729 	int i;
730 
731 	if (!pdev ||
732 	    platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
733 	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
734 	    platform_device_add(pdev)) {
735 		platform_device_put(pdev);
736 		return;
737 	}
738 	memset(&cpdata, 0, sizeof(cpdata));
739 	cpdata.dmac_dev = pdev;
740 	for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
741 #ifdef CONFIG_MACH_TX49XX
742 		chan_res[0].start = irq + i;
743 #endif
744 		pdev = platform_device_alloc("txx9dmac-chan",
745 					     id * TXX9_DMA_MAX_NR_CHANNELS + i);
746 		if (!pdev ||
747 #ifdef CONFIG_MACH_TX49XX
748 		    platform_device_add_resources(pdev, chan_res,
749 						  ARRAY_SIZE(chan_res)) ||
750 #endif
751 		    platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
752 		    platform_device_add(pdev))
753 			platform_device_put(pdev);
754 	}
755 #endif
756 }
757 
txx9_aclc_init(unsigned long baseaddr,int irq,unsigned int dmac_id,unsigned int dma_chan_out,unsigned int dma_chan_in)758 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
759 			   unsigned int dmac_id,
760 			   unsigned int dma_chan_out,
761 			   unsigned int dma_chan_in)
762 {
763 }
764 
765 static const struct bus_type txx9_sramc_subsys = {
766 	.name = "txx9_sram",
767 	.dev_name = "txx9_sram",
768 };
769 
770 struct txx9_sramc_dev {
771 	struct device dev;
772 	struct bin_attribute bindata_attr;
773 	void __iomem *base;
774 };
775 
txx9_sram_read(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t size)776 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
777 			      struct bin_attribute *bin_attr,
778 			      char *buf, loff_t pos, size_t size)
779 {
780 	struct txx9_sramc_dev *dev = bin_attr->private;
781 	size_t ramsize = bin_attr->size;
782 
783 	if (pos >= ramsize)
784 		return 0;
785 	if (pos + size > ramsize)
786 		size = ramsize - pos;
787 	memcpy_fromio(buf, dev->base + pos, size);
788 	return size;
789 }
790 
txx9_sram_write(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t pos,size_t size)791 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
792 			       struct bin_attribute *bin_attr,
793 			       char *buf, loff_t pos, size_t size)
794 {
795 	struct txx9_sramc_dev *dev = bin_attr->private;
796 	size_t ramsize = bin_attr->size;
797 
798 	if (pos >= ramsize)
799 		return 0;
800 	if (pos + size > ramsize)
801 		size = ramsize - pos;
802 	memcpy_toio(dev->base + pos, buf, size);
803 	return size;
804 }
805 
txx9_device_release(struct device * dev)806 static void txx9_device_release(struct device *dev)
807 {
808 	struct txx9_sramc_dev *tdev;
809 
810 	tdev = container_of(dev, struct txx9_sramc_dev, dev);
811 	kfree(tdev);
812 }
813 
txx9_sramc_init(struct resource * r)814 void __init txx9_sramc_init(struct resource *r)
815 {
816 	struct txx9_sramc_dev *dev;
817 	size_t size;
818 	int err;
819 
820 	err = subsys_system_register(&txx9_sramc_subsys, NULL);
821 	if (err)
822 		return;
823 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
824 	if (!dev)
825 		return;
826 	size = resource_size(r);
827 	dev->base = ioremap(r->start, size);
828 	if (!dev->base) {
829 		kfree(dev);
830 		return;
831 	}
832 	dev->dev.release = &txx9_device_release;
833 	dev->dev.bus = &txx9_sramc_subsys;
834 	sysfs_bin_attr_init(&dev->bindata_attr);
835 	dev->bindata_attr.attr.name = "bindata";
836 	dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
837 	dev->bindata_attr.read = txx9_sram_read;
838 	dev->bindata_attr.write = txx9_sram_write;
839 	dev->bindata_attr.size = size;
840 	dev->bindata_attr.private = dev;
841 	err = device_register(&dev->dev);
842 	if (err)
843 		goto exit_put;
844 	err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
845 	if (err) {
846 		iounmap(dev->base);
847 		device_unregister(&dev->dev);
848 	}
849 	return;
850 exit_put:
851 	iounmap(dev->base);
852 	put_device(&dev->dev);
853 }
854