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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux/fpc-iii.git] / arch / mips / txx9 / generic / setup.c
blob2b0b83c171e0959dfb946fd027ef32aa2ec31ca4
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/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>
29 #include <asm/idle.h>
30 #include <asm/time.h>
31 #include <asm/reboot.h>
32 #include <asm/r4kcache.h>
33 #include <asm/sections.h>
34 #include <asm/txx9/generic.h>
35 #include <asm/txx9/pci.h>
36 #include <asm/txx9tmr.h>
37 #include <asm/txx9/ndfmc.h>
38 #include <asm/txx9/dmac.h>
39 #ifdef CONFIG_CPU_TX49XX
40 #include <asm/txx9/tx4938.h>
41 #endif
42
43 /* EBUSC settings of TX4927, etc. */
44 struct resource txx9_ce_res[8];
45 static char txx9_ce_res_name[8][4]; /* "CEn" */
46
47 /* pcode, internal register */
48 unsigned int txx9_pcode;
49 char txx9_pcode_str[8];
50 static struct resource txx9_reg_res = {
51 .name = txx9_pcode_str,
52 .flags = IORESOURCE_MEM,
53 };
54 void __init
55 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
56 {
57 int i;
58
59 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
60 sprintf(txx9_ce_res_name[i], "CE%d", i);
61 txx9_ce_res[i].flags = IORESOURCE_MEM;
62 txx9_ce_res[i].name = txx9_ce_res_name[i];
63 }
64
65 txx9_pcode = pcode;
66 sprintf(txx9_pcode_str, "TX%x", pcode);
67 if (base) {
68 txx9_reg_res.start = base & 0xfffffffffULL;
69 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
70 request_resource(&iomem_resource, &txx9_reg_res);
71 }
72 }
73
74 /* clocks */
75 unsigned int txx9_master_clock;
76 unsigned int txx9_cpu_clock;
77 unsigned int txx9_gbus_clock;
78
79 #ifdef CONFIG_CPU_TX39XX
80 /* don't enable by default - see errata */
81 int txx9_ccfg_toeon __initdata;
82 #else
83 int txx9_ccfg_toeon __initdata = 1;
84 #endif
85
86 /* Minimum CLK support */
87
88 struct clk *clk_get(struct device *dev, const char *id)
89 {
90 if (!strcmp(id, "spi-baseclk"))
91 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
92 if (!strcmp(id, "imbus_clk"))
93 return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
94 return ERR_PTR(-ENOENT);
95 }
96 EXPORT_SYMBOL(clk_get);
97
98 int clk_enable(struct clk *clk)
99 {
100 return 0;
101 }
102 EXPORT_SYMBOL(clk_enable);
103
104 void clk_disable(struct clk *clk)
105 {
106 }
107 EXPORT_SYMBOL(clk_disable);
108
109 unsigned long clk_get_rate(struct clk *clk)
110 {
111 return (unsigned long)clk;
112 }
113 EXPORT_SYMBOL(clk_get_rate);
114
115 void clk_put(struct clk *clk)
116 {
117 }
118 EXPORT_SYMBOL(clk_put);
119
120 /* GPIO support */
121
122 #ifdef CONFIG_GPIOLIB
123 int gpio_to_irq(unsigned gpio)
124 {
125 return -EINVAL;
126 }
127 EXPORT_SYMBOL(gpio_to_irq);
128
129 int irq_to_gpio(unsigned irq)
130 {
131 return -EINVAL;
132 }
133 EXPORT_SYMBOL(irq_to_gpio);
134 #endif
135
136 #define BOARD_VEC(board) extern struct txx9_board_vec board;
137 #include <asm/txx9/boards.h>
138 #undef BOARD_VEC
139
140 struct txx9_board_vec *txx9_board_vec __initdata;
141 static char txx9_system_type[32];
142
143 static struct txx9_board_vec *board_vecs[] __initdata = {
144 #define BOARD_VEC(board) &board,
145 #include <asm/txx9/boards.h>
146 #undef BOARD_VEC
147 };
148
149 static struct txx9_board_vec *__init find_board_byname(const char *name)
150 {
151 int i;
152
153 /* search board_vecs table */
154 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
155 if (strstr(board_vecs[i]->system, name))
156 return board_vecs[i];
157 }
158 return NULL;
159 }
160
161 static void __init prom_init_cmdline(void)
162 {
163 int argc;
164 int *argv32;
165 int i; /* Always ignore the "-c" at argv[0] */
166
167 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
168 /*
169 * argc is not a valid number, or argv32 is not a valid
170 * pointer
171 */
172 argc = 0;
173 argv32 = NULL;
174 } else {
175 argc = (int)fw_arg0;
176 argv32 = (int *)fw_arg1;
177 }
178
179 arcs_cmdline[0] = '\0';
180
181 for (i = 1; i < argc; i++) {
182 char *str = (char *)(long)argv32[i];
183 if (i != 1)
184 strcat(arcs_cmdline, " ");
185 if (strchr(str, ' ')) {
186 strcat(arcs_cmdline, "\"");
187 strcat(arcs_cmdline, str);
188 strcat(arcs_cmdline, "\"");
189 } else
190 strcat(arcs_cmdline, str);
191 }
192 }
193
194 static int txx9_ic_disable __initdata;
195 static int txx9_dc_disable __initdata;
196
197 #if defined(CONFIG_CPU_TX49XX)
198 /* flush all cache on very early stage (before 4k_cache_init) */
199 static void __init early_flush_dcache(void)
200 {
201 unsigned int conf = read_c0_config();
202 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
203 unsigned int linesz = 32;
204 unsigned long addr, end;
205
206 end = INDEX_BASE + dc_size / 4;
207 /* 4way, waybit=0 */
208 for (addr = INDEX_BASE; addr < end; addr += linesz) {
209 cache_op(Index_Writeback_Inv_D, addr | 0);
210 cache_op(Index_Writeback_Inv_D, addr | 1);
211 cache_op(Index_Writeback_Inv_D, addr | 2);
212 cache_op(Index_Writeback_Inv_D, addr | 3);
213 }
214 }
215
216 static void __init txx9_cache_fixup(void)
217 {
218 unsigned int conf;
219
220 conf = read_c0_config();
221 /* flush and disable */
222 if (txx9_ic_disable) {
223 conf |= TX49_CONF_IC;
224 write_c0_config(conf);
225 }
226 if (txx9_dc_disable) {
227 early_flush_dcache();
228 conf |= TX49_CONF_DC;
229 write_c0_config(conf);
230 }
231
232 /* enable cache */
233 conf = read_c0_config();
234 if (!txx9_ic_disable)
235 conf &= ~TX49_CONF_IC;
236 if (!txx9_dc_disable)
237 conf &= ~TX49_CONF_DC;
238 write_c0_config(conf);
239
240 if (conf & TX49_CONF_IC)
241 pr_info("TX49XX I-Cache disabled.\n");
242 if (conf & TX49_CONF_DC)
243 pr_info("TX49XX D-Cache disabled.\n");
244 }
245 #elif defined(CONFIG_CPU_TX39XX)
246 /* flush all cache on very early stage (before tx39_cache_init) */
247 static void __init early_flush_dcache(void)
248 {
249 unsigned int conf = read_c0_config();
250 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
251 TX39_CONF_DCS_SHIFT));
252 unsigned int linesz = 16;
253 unsigned long addr, end;
254
255 end = INDEX_BASE + dc_size / 2;
256 /* 2way, waybit=0 */
257 for (addr = INDEX_BASE; addr < end; addr += linesz) {
258 cache_op(Index_Writeback_Inv_D, addr | 0);
259 cache_op(Index_Writeback_Inv_D, addr | 1);
260 }
261 }
262
263 static void __init txx9_cache_fixup(void)
264 {
265 unsigned int conf;
266
267 conf = read_c0_config();
268 /* flush and disable */
269 if (txx9_ic_disable) {
270 conf &= ~TX39_CONF_ICE;
271 write_c0_config(conf);
272 }
273 if (txx9_dc_disable) {
274 early_flush_dcache();
275 conf &= ~TX39_CONF_DCE;
276 write_c0_config(conf);
277 }
278
279 /* enable cache */
280 conf = read_c0_config();
281 if (!txx9_ic_disable)
282 conf |= TX39_CONF_ICE;
283 if (!txx9_dc_disable)
284 conf |= TX39_CONF_DCE;
285 write_c0_config(conf);
286
287 if (!(conf & TX39_CONF_ICE))
288 pr_info("TX39XX I-Cache disabled.\n");
289 if (!(conf & TX39_CONF_DCE))
290 pr_info("TX39XX D-Cache disabled.\n");
291 }
292 #else
293 static inline void txx9_cache_fixup(void)
294 {
295 }
296 #endif
297
298 static void __init preprocess_cmdline(void)
299 {
300 static char cmdline[COMMAND_LINE_SIZE] __initdata;
301 char *s;
302
303 strcpy(cmdline, arcs_cmdline);
304 s = cmdline;
305 arcs_cmdline[0] = '\0';
306 while (s && *s) {
307 char *str = strsep(&s, " ");
308 if (strncmp(str, "board=", 6) == 0) {
309 txx9_board_vec = find_board_byname(str + 6);
310 continue;
311 } else if (strncmp(str, "masterclk=", 10) == 0) {
312 unsigned long val;
313 if (strict_strtoul(str + 10, 10, &val) == 0)
314 txx9_master_clock = val;
315 continue;
316 } else if (strcmp(str, "icdisable") == 0) {
317 txx9_ic_disable = 1;
318 continue;
319 } else if (strcmp(str, "dcdisable") == 0) {
320 txx9_dc_disable = 1;
321 continue;
322 } else if (strcmp(str, "toeoff") == 0) {
323 txx9_ccfg_toeon = 0;
324 continue;
325 } else if (strcmp(str, "toeon") == 0) {
326 txx9_ccfg_toeon = 1;
327 continue;
328 }
329 if (arcs_cmdline[0])
330 strcat(arcs_cmdline, " ");
331 strcat(arcs_cmdline, str);
332 }
333
334 txx9_cache_fixup();
335 }
336
337 static void __init select_board(void)
338 {
339 const char *envstr;
340
341 /* first, determine by "board=" argument in preprocess_cmdline() */
342 if (txx9_board_vec)
343 return;
344 /* next, determine by "board" envvar */
345 envstr = prom_getenv("board");
346 if (envstr) {
347 txx9_board_vec = find_board_byname(envstr);
348 if (txx9_board_vec)
349 return;
350 }
351
352 /* select "default" board */
353 #ifdef CONFIG_TOSHIBA_JMR3927
354 txx9_board_vec = &jmr3927_vec;
355 #endif
356 #ifdef CONFIG_CPU_TX49XX
357 switch (TX4938_REV_PCODE()) {
358 #ifdef CONFIG_TOSHIBA_RBTX4927
359 case 0x4927:
360 txx9_board_vec = &rbtx4927_vec;
361 break;
362 case 0x4937:
363 txx9_board_vec = &rbtx4937_vec;
364 break;
365 #endif
366 #ifdef CONFIG_TOSHIBA_RBTX4938
367 case 0x4938:
368 txx9_board_vec = &rbtx4938_vec;
369 break;
370 #endif
371 #ifdef CONFIG_TOSHIBA_RBTX4939
372 case 0x4939:
373 txx9_board_vec = &rbtx4939_vec;
374 break;
375 #endif
376 }
377 #endif
378 }
379
380 void __init prom_init(void)
381 {
382 prom_init_cmdline();
383 preprocess_cmdline();
384 select_board();
385
386 strcpy(txx9_system_type, txx9_board_vec->system);
387
388 txx9_board_vec->prom_init();
389 }
390
391 void __init prom_free_prom_memory(void)
392 {
393 unsigned long saddr = PAGE_SIZE;
394 unsigned long eaddr = __pa_symbol(&_text);
395
396 if (saddr < eaddr)
397 free_init_pages("prom memory", saddr, eaddr);
398 }
399
400 const char *get_system_type(void)
401 {
402 return txx9_system_type;
403 }
404
405 const char *__init prom_getenv(const char *name)
406 {
407 const s32 *str;
408
409 if (fw_arg2 < CKSEG0)
410 return NULL;
411
412 str = (const s32 *)fw_arg2;
413 /* YAMON style ("name", "value" pairs) */
414 while (str[0] && str[1]) {
415 if (!strcmp((const char *)(unsigned long)str[0], name))
416 return (const char *)(unsigned long)str[1];
417 str += 2;
418 }
419 return NULL;
420 }
421
422 static void __noreturn txx9_machine_halt(void)
423 {
424 local_irq_disable();
425 clear_c0_status(ST0_IM);
426 while (1) {
427 if (cpu_wait) {
428 (*cpu_wait)();
429 if (cpu_has_counter) {
430 /*
431 * Clear counter interrupt while it
432 * breaks WAIT instruction even if
433 * masked.
434 */
435 write_c0_compare(0);
436 }
437 }
438 }
439 }
440
441 /* Watchdog support */
442 void __init txx9_wdt_init(unsigned long base)
443 {
444 struct resource res = {
445 .start = base,
446 .end = base + 0x100 - 1,
447 .flags = IORESOURCE_MEM,
448 };
449 platform_device_register_simple("txx9wdt", -1, &res, 1);
450 }
451
452 void txx9_wdt_now(unsigned long base)
453 {
454 struct txx9_tmr_reg __iomem *tmrptr =
455 ioremap(base, sizeof(struct txx9_tmr_reg));
456 /* disable watch dog timer */
457 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
458 __raw_writel(0, &tmrptr->tcr);
459 /* kick watchdog */
460 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
461 __raw_writel(1, &tmrptr->cpra); /* immediate */
462 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
463 &tmrptr->tcr);
464 }
465
466 /* SPI support */
467 void __init txx9_spi_init(int busid, unsigned long base, int irq)
468 {
469 struct resource res[] = {
470 {
471 .start = base,
472 .end = base + 0x20 - 1,
473 .flags = IORESOURCE_MEM,
474 }, {
475 .start = irq,
476 .flags = IORESOURCE_IRQ,
477 },
478 };
479 platform_device_register_simple("spi_txx9", busid,
480 res, ARRAY_SIZE(res));
481 }
482
483 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
484 {
485 struct platform_device *pdev =
486 platform_device_alloc("tc35815-mac", id);
487 if (!pdev ||
488 platform_device_add_data(pdev, ethaddr, 6) ||
489 platform_device_add(pdev))
490 platform_device_put(pdev);
491 }
492
493 void __init txx9_sio_init(unsigned long baseaddr, int irq,
494 unsigned int line, unsigned int sclk, int nocts)
495 {
496 #ifdef CONFIG_SERIAL_TXX9
497 struct uart_port req;
498
499 memset(&req, 0, sizeof(req));
500 req.line = line;
501 req.iotype = UPIO_MEM;
502 req.membase = ioremap(baseaddr, 0x24);
503 req.mapbase = baseaddr;
504 req.irq = irq;
505 if (!nocts)
506 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
507 if (sclk) {
508 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
509 req.uartclk = sclk;
510 } else
511 req.uartclk = TXX9_IMCLK;
512 early_serial_txx9_setup(&req);
513 #endif /* CONFIG_SERIAL_TXX9 */
514 }
515
516 #ifdef CONFIG_EARLY_PRINTK
517 static void null_prom_putchar(char c)
518 {
519 }
520 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
521
522 void prom_putchar(char c)
523 {
524 txx9_prom_putchar(c);
525 }
526
527 static void __iomem *early_txx9_sio_port;
528
529 static void early_txx9_sio_putchar(char c)
530 {
531 #define TXX9_SICISR 0x0c
532 #define TXX9_SITFIFO 0x1c
533 #define TXX9_SICISR_TXALS 0x00000002
534 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
535 TXX9_SICISR_TXALS))
536 ;
537 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
538 }
539
540 void __init txx9_sio_putchar_init(unsigned long baseaddr)
541 {
542 early_txx9_sio_port = ioremap(baseaddr, 0x24);
543 txx9_prom_putchar = early_txx9_sio_putchar;
544 }
545 #endif /* CONFIG_EARLY_PRINTK */
546
547 /* wrappers */
548 void __init plat_mem_setup(void)
549 {
550 ioport_resource.start = 0;
551 ioport_resource.end = ~0UL; /* no limit */
552 iomem_resource.start = 0;
553 iomem_resource.end = ~0UL; /* no limit */
554
555 /* fallback restart/halt routines */
556 _machine_restart = (void (*)(char *))txx9_machine_halt;
557 _machine_halt = txx9_machine_halt;
558 pm_power_off = txx9_machine_halt;
559
560 #ifdef CONFIG_PCI
561 pcibios_plat_setup = txx9_pcibios_setup;
562 #endif
563 txx9_board_vec->mem_setup();
564 }
565
566 void __init arch_init_irq(void)
567 {
568 txx9_board_vec->irq_setup();
569 }
570
571 void __init plat_time_init(void)
572 {
573 #ifdef CONFIG_CPU_TX49XX
574 mips_hpt_frequency = txx9_cpu_clock / 2;
575 #endif
576 txx9_board_vec->time_init();
577 }
578
579 static int __init _txx9_arch_init(void)
580 {
581 if (txx9_board_vec->arch_init)
582 txx9_board_vec->arch_init();
583 return 0;
584 }
585 arch_initcall(_txx9_arch_init);
586
587 static int __init _txx9_device_init(void)
588 {
589 if (txx9_board_vec->device_init)
590 txx9_board_vec->device_init();
591 return 0;
592 }
593 device_initcall(_txx9_device_init);
594
595 int (*txx9_irq_dispatch)(int pending);
596 asmlinkage void plat_irq_dispatch(void)
597 {
598 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
599 int irq = txx9_irq_dispatch(pending);
600
601 if (likely(irq >= 0))
602 do_IRQ(irq);
603 else
604 spurious_interrupt();
605 }
606
607 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
608 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
609 static unsigned long __swizzle_addr_none(unsigned long port)
610 {
611 return port;
612 }
613 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
614 EXPORT_SYMBOL(__swizzle_addr_b);
615 #endif
616
617 #ifdef NEEDS_TXX9_IOSWABW
618 static u16 ioswabw_default(volatile u16 *a, u16 x)
619 {
620 return le16_to_cpu(x);
621 }
622 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
623 {
624 return x;
625 }
626 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
627 EXPORT_SYMBOL(ioswabw);
628 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
629 EXPORT_SYMBOL(__mem_ioswabw);
630 #endif
631
632 void __init txx9_physmap_flash_init(int no, unsigned long addr,
633 unsigned long size,
634 const struct physmap_flash_data *pdata)
635 {
636 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
637 struct resource res = {
638 .start = addr,
639 .end = addr + size - 1,
640 .flags = IORESOURCE_MEM,
641 };
642 struct platform_device *pdev;
643 static struct mtd_partition parts[2];
644 struct physmap_flash_data pdata_part;
645
646 /* If this area contained boot area, make separate partition */
647 if (pdata->nr_parts == 0 && !pdata->parts &&
648 addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
649 !parts[0].name) {
650 parts[0].name = "boot";
651 parts[0].offset = 0x1fc00000 - addr;
652 parts[0].size = addr + size - 0x1fc00000;
653 parts[1].name = "user";
654 parts[1].offset = 0;
655 parts[1].size = 0x1fc00000 - addr;
656 pdata_part = *pdata;
657 pdata_part.nr_parts = ARRAY_SIZE(parts);
658 pdata_part.parts = parts;
659 pdata = &pdata_part;
660 }
661
662 pdev = platform_device_alloc("physmap-flash", no);
663 if (!pdev ||
664 platform_device_add_resources(pdev, &res, 1) ||
665 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
666 platform_device_add(pdev))
667 platform_device_put(pdev);
668 #endif
669 }
670
671 void __init txx9_ndfmc_init(unsigned long baseaddr,
672 const struct txx9ndfmc_platform_data *pdata)
673 {
674 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
675 struct resource res = {
676 .start = baseaddr,
677 .end = baseaddr + 0x1000 - 1,
678 .flags = IORESOURCE_MEM,
679 };
680 struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
681
682 if (!pdev ||
683 platform_device_add_resources(pdev, &res, 1) ||
684 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
685 platform_device_add(pdev))
686 platform_device_put(pdev);
687 #endif
688 }
689
690 #if IS_ENABLED(CONFIG_LEDS_GPIO)
691 static DEFINE_SPINLOCK(txx9_iocled_lock);
692
693 #define TXX9_IOCLED_MAXLEDS 8
694
695 struct txx9_iocled_data {
696 struct gpio_chip chip;
697 u8 cur_val;
698 void __iomem *mmioaddr;
699 struct gpio_led_platform_data pdata;
700 struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
701 char names[TXX9_IOCLED_MAXLEDS][32];
702 };
703
704 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
705 {
706 struct txx9_iocled_data *data =
707 container_of(chip, struct txx9_iocled_data, chip);
708 return data->cur_val & (1 << offset);
709 }
710
711 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
712 int value)
713 {
714 struct txx9_iocled_data *data =
715 container_of(chip, struct txx9_iocled_data, chip);
716 unsigned long flags;
717 spin_lock_irqsave(&txx9_iocled_lock, flags);
718 if (value)
719 data->cur_val |= 1 << offset;
720 else
721 data->cur_val &= ~(1 << offset);
722 writeb(data->cur_val, data->mmioaddr);
723 mmiowb();
724 spin_unlock_irqrestore(&txx9_iocled_lock, flags);
725 }
726
727 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
728 {
729 return 0;
730 }
731
732 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
733 int value)
734 {
735 txx9_iocled_set(chip, offset, value);
736 return 0;
737 }
738
739 void __init txx9_iocled_init(unsigned long baseaddr,
740 int basenum, unsigned int num, int lowactive,
741 const char *color, char **deftriggers)
742 {
743 struct txx9_iocled_data *iocled;
744 struct platform_device *pdev;
745 int i;
746 static char *default_triggers[] __initdata = {
747 "heartbeat",
748 "ide-disk",
749 "nand-disk",
750 NULL,
751 };
752
753 if (!deftriggers)
754 deftriggers = default_triggers;
755 iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
756 if (!iocled)
757 return;
758 iocled->mmioaddr = ioremap(baseaddr, 1);
759 if (!iocled->mmioaddr)
760 goto out_free;
761 iocled->chip.get = txx9_iocled_get;
762 iocled->chip.set = txx9_iocled_set;
763 iocled->chip.direction_input = txx9_iocled_dir_in;
764 iocled->chip.direction_output = txx9_iocled_dir_out;
765 iocled->chip.label = "iocled";
766 iocled->chip.base = basenum;
767 iocled->chip.ngpio = num;
768 if (gpiochip_add(&iocled->chip))
769 goto out_unmap;
770 if (basenum < 0)
771 basenum = iocled->chip.base;
772
773 pdev = platform_device_alloc("leds-gpio", basenum);
774 if (!pdev)
775 goto out_gpio;
776 iocled->pdata.num_leds = num;
777 iocled->pdata.leds = iocled->leds;
778 for (i = 0; i < num; i++) {
779 struct gpio_led *led = &iocled->leds[i];
780 snprintf(iocled->names[i], sizeof(iocled->names[i]),
781 "iocled:%s:%u", color, i);
782 led->name = iocled->names[i];
783 led->gpio = basenum + i;
784 led->active_low = lowactive;
785 if (deftriggers && *deftriggers)
786 led->default_trigger = *deftriggers++;
787 }
788 pdev->dev.platform_data = &iocled->pdata;
789 if (platform_device_add(pdev))
790 goto out_pdev;
791 return;
792 out_pdev:
793 platform_device_put(pdev);
794 out_gpio:
795 if (gpiochip_remove(&iocled->chip))
796 return;
797 out_unmap:
798 iounmap(iocled->mmioaddr);
799 out_free:
800 kfree(iocled);
801 }
802 #else /* CONFIG_LEDS_GPIO */
803 void __init txx9_iocled_init(unsigned long baseaddr,
804 int basenum, unsigned int num, int lowactive,
805 const char *color, char **deftriggers)
806 {
807 }
808 #endif /* CONFIG_LEDS_GPIO */
809
810 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
811 const struct txx9dmac_platform_data *pdata)
812 {
813 #if IS_ENABLED(CONFIG_TXX9_DMAC)
814 struct resource res[] = {
815 {
816 .start = baseaddr,
817 .end = baseaddr + 0x800 - 1,
818 .flags = IORESOURCE_MEM,
819 #ifndef CONFIG_MACH_TX49XX
820 }, {
821 .start = irq,
822 .flags = IORESOURCE_IRQ,
823 #endif
824 }
825 };
826 #ifdef CONFIG_MACH_TX49XX
827 struct resource chan_res[] = {
828 {
829 .flags = IORESOURCE_IRQ,
830 }
831 };
832 #endif
833 struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
834 struct txx9dmac_chan_platform_data cpdata;
835 int i;
836
837 if (!pdev ||
838 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
839 platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
840 platform_device_add(pdev)) {
841 platform_device_put(pdev);
842 return;
843 }
844 memset(&cpdata, 0, sizeof(cpdata));
845 cpdata.dmac_dev = pdev;
846 for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
847 #ifdef CONFIG_MACH_TX49XX
848 chan_res[0].start = irq + i;
849 #endif
850 pdev = platform_device_alloc("txx9dmac-chan",
851 id * TXX9_DMA_MAX_NR_CHANNELS + i);
852 if (!pdev ||
853 #ifdef CONFIG_MACH_TX49XX
854 platform_device_add_resources(pdev, chan_res,
855 ARRAY_SIZE(chan_res)) ||
856 #endif
857 platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
858 platform_device_add(pdev))
859 platform_device_put(pdev);
860 }
861 #endif
862 }
863
864 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
865 unsigned int dmac_id,
866 unsigned int dma_chan_out,
867 unsigned int dma_chan_in)
868 {
869 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
870 unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
871 struct resource res[] = {
872 {
873 .start = baseaddr,
874 .end = baseaddr + 0x100 - 1,
875 .flags = IORESOURCE_MEM,
876 }, {
877 .start = irq,
878 .flags = IORESOURCE_IRQ,
879 }, {
880 .name = "txx9dmac-chan",
881 .start = dma_base + dma_chan_out,
882 .flags = IORESOURCE_DMA,
883 }, {
884 .name = "txx9dmac-chan",
885 .start = dma_base + dma_chan_in,
886 .flags = IORESOURCE_DMA,
887 }
888 };
889 struct platform_device *pdev =
890 platform_device_alloc("txx9aclc-ac97", -1);
891
892 if (!pdev ||
893 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
894 platform_device_add(pdev))
895 platform_device_put(pdev);
896 #endif
897 }
898
899 static struct bus_type txx9_sramc_subsys = {
900 .name = "txx9_sram",
901 .dev_name = "txx9_sram",
902 };
903
904 struct txx9_sramc_dev {
905 struct device dev;
906 struct bin_attribute bindata_attr;
907 void __iomem *base;
908 };
909
910 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
911 struct bin_attribute *bin_attr,
912 char *buf, loff_t pos, size_t size)
913 {
914 struct txx9_sramc_dev *dev = bin_attr->private;
915 size_t ramsize = bin_attr->size;
916
917 if (pos >= ramsize)
918 return 0;
919 if (pos + size > ramsize)
920 size = ramsize - pos;
921 memcpy_fromio(buf, dev->base + pos, size);
922 return size;
923 }
924
925 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
926 struct bin_attribute *bin_attr,
927 char *buf, loff_t pos, size_t size)
928 {
929 struct txx9_sramc_dev *dev = bin_attr->private;
930 size_t ramsize = bin_attr->size;
931
932 if (pos >= ramsize)
933 return 0;
934 if (pos + size > ramsize)
935 size = ramsize - pos;
936 memcpy_toio(dev->base + pos, buf, size);
937 return size;
938 }
939
940 void __init txx9_sramc_init(struct resource *r)
941 {
942 struct txx9_sramc_dev *dev;
943 size_t size;
944 int err;
945
946 err = subsys_system_register(&txx9_sramc_subsys, NULL);
947 if (err)
948 return;
949 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
950 if (!dev)
951 return;
952 size = resource_size(r);
953 dev->base = ioremap(r->start, size);
954 if (!dev->base)
955 goto exit;
956 dev->dev.bus = &txx9_sramc_subsys;
957 sysfs_bin_attr_init(&dev->bindata_attr);
958 dev->bindata_attr.attr.name = "bindata";
959 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
960 dev->bindata_attr.read = txx9_sram_read;
961 dev->bindata_attr.write = txx9_sram_write;
962 dev->bindata_attr.size = size;
963 dev->bindata_attr.private = dev;
964 err = device_register(&dev->dev);
965 if (err)
966 goto exit;
967 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
968 if (err) {
969 device_unregister(&dev->dev);
970 goto exit;
971 }
972 return;
973 exit:
974 if (dev) {
975 if (dev->base)
976 iounmap(dev->base);
977 kfree(dev);
978 }
979 }
Linux with added FPC-III support