projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / mips / txx9 / generic / setup.c
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/sysdev.h>
26 #include <linux/slab.h>
27 #include <asm/bootinfo.h>
28 #include <asm/time.h>
29 #include <asm/reboot.h>
30 #include <asm/r4kcache.h>
31 #include <asm/sections.h>
32 #include <asm/txx9/generic.h>
33 #include <asm/txx9/pci.h>
34 #include <asm/txx9tmr.h>
35 #include <asm/txx9/ndfmc.h>
36 #include <asm/txx9/dmac.h>
37 #ifdef CONFIG_CPU_TX49XX
38 #include <asm/txx9/tx4938.h>
39 #endif
40
41 /* EBUSC settings of TX4927, etc. */
42 struct resource txx9_ce_res[8];
43 static char txx9_ce_res_name[8][4]; /* "CEn" */
44
45 /* pcode, internal register */
46 unsigned int txx9_pcode;
47 char txx9_pcode_str[8];
48 static struct resource txx9_reg_res = {
49 .name = txx9_pcode_str,
50 .flags = IORESOURCE_MEM,
51 };
52 void __init
53 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
54 {
55 int i;
56
57 for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
58 sprintf(txx9_ce_res_name[i], "CE%d", i);
59 txx9_ce_res[i].flags = IORESOURCE_MEM;
60 txx9_ce_res[i].name = txx9_ce_res_name[i];
61 }
62
63 txx9_pcode = pcode;
64 sprintf(txx9_pcode_str, "TX%x", pcode);
65 if (base) {
66 txx9_reg_res.start = base & 0xfffffffffULL;
67 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
68 request_resource(&iomem_resource, &txx9_reg_res);
69 }
70 }
71
72 /* clocks */
73 unsigned int txx9_master_clock;
74 unsigned int txx9_cpu_clock;
75 unsigned int txx9_gbus_clock;
76
77 #ifdef CONFIG_CPU_TX39XX
78 /* don't enable by default - see errata */
79 int txx9_ccfg_toeon __initdata;
80 #else
81 int txx9_ccfg_toeon __initdata = 1;
82 #endif
83
84 /* Minimum CLK support */
85
86 struct clk *clk_get(struct device *dev, const char *id)
87 {
88 if (!strcmp(id, "spi-baseclk"))
89 return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 2);
90 if (!strcmp(id, "imbus_clk"))
91 return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
92 return ERR_PTR(-ENOENT);
93 }
94 EXPORT_SYMBOL(clk_get);
95
96 int clk_enable(struct clk *clk)
97 {
98 return 0;
99 }
100 EXPORT_SYMBOL(clk_enable);
101
102 void clk_disable(struct clk *clk)
103 {
104 }
105 EXPORT_SYMBOL(clk_disable);
106
107 unsigned long clk_get_rate(struct clk *clk)
108 {
109 return (unsigned long)clk;
110 }
111 EXPORT_SYMBOL(clk_get_rate);
112
113 void clk_put(struct clk *clk)
114 {
115 }
116 EXPORT_SYMBOL(clk_put);
117
118 /* GPIO support */
119
120 #ifdef CONFIG_GENERIC_GPIO
121 int gpio_to_irq(unsigned gpio)
122 {
123 return -EINVAL;
124 }
125 EXPORT_SYMBOL(gpio_to_irq);
126
127 int irq_to_gpio(unsigned irq)
128 {
129 return -EINVAL;
130 }
131 EXPORT_SYMBOL(irq_to_gpio);
132 #endif
133
134 #define BOARD_VEC(board) extern struct txx9_board_vec board;
135 #include <asm/txx9/boards.h>
136 #undef BOARD_VEC
137
138 struct txx9_board_vec *txx9_board_vec __initdata;
139 static char txx9_system_type[32];
140
141 static struct txx9_board_vec *board_vecs[] __initdata = {
142 #define BOARD_VEC(board) &board,
143 #include <asm/txx9/boards.h>
144 #undef BOARD_VEC
145 };
146
147 static struct txx9_board_vec *__init find_board_byname(const char *name)
148 {
149 int i;
150
151 /* search board_vecs table */
152 for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
153 if (strstr(board_vecs[i]->system, name))
154 return board_vecs[i];
155 }
156 return NULL;
157 }
158
159 static void __init prom_init_cmdline(void)
160 {
161 int argc;
162 int *argv32;
163 int i; /* Always ignore the "-c" at argv[0] */
164
165 if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
166 /*
167 * argc is not a valid number, or argv32 is not a valid
168 * pointer
169 */
170 argc = 0;
171 argv32 = NULL;
172 } else {
173 argc = (int)fw_arg0;
174 argv32 = (int *)fw_arg1;
175 }
176
177 arcs_cmdline[0] = '\0';
178
179 for (i = 1; i < argc; i++) {
180 char *str = (char *)(long)argv32[i];
181 if (i != 1)
182 strcat(arcs_cmdline, " ");
183 if (strchr(str, ' ')) {
184 strcat(arcs_cmdline, "\"");
185 strcat(arcs_cmdline, str);
186 strcat(arcs_cmdline, "\"");
187 } else
188 strcat(arcs_cmdline, str);
189 }
190 }
191
192 static int txx9_ic_disable __initdata;
193 static int txx9_dc_disable __initdata;
194
195 #if defined(CONFIG_CPU_TX49XX)
196 /* flush all cache on very early stage (before 4k_cache_init) */
197 static void __init early_flush_dcache(void)
198 {
199 unsigned int conf = read_c0_config();
200 unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
201 unsigned int linesz = 32;
202 unsigned long addr, end;
203
204 end = INDEX_BASE + dc_size / 4;
205 /* 4way, waybit=0 */
206 for (addr = INDEX_BASE; addr < end; addr += linesz) {
207 cache_op(Index_Writeback_Inv_D, addr | 0);
208 cache_op(Index_Writeback_Inv_D, addr | 1);
209 cache_op(Index_Writeback_Inv_D, addr | 2);
210 cache_op(Index_Writeback_Inv_D, addr | 3);
211 }
212 }
213
214 static void __init txx9_cache_fixup(void)
215 {
216 unsigned int conf;
217
218 conf = read_c0_config();
219 /* flush and disable */
220 if (txx9_ic_disable) {
221 conf |= TX49_CONF_IC;
222 write_c0_config(conf);
223 }
224 if (txx9_dc_disable) {
225 early_flush_dcache();
226 conf |= TX49_CONF_DC;
227 write_c0_config(conf);
228 }
229
230 /* enable cache */
231 conf = read_c0_config();
232 if (!txx9_ic_disable)
233 conf &= ~TX49_CONF_IC;
234 if (!txx9_dc_disable)
235 conf &= ~TX49_CONF_DC;
236 write_c0_config(conf);
237
238 if (conf & TX49_CONF_IC)
239 pr_info("TX49XX I-Cache disabled.\n");
240 if (conf & TX49_CONF_DC)
241 pr_info("TX49XX D-Cache disabled.\n");
242 }
243 #elif defined(CONFIG_CPU_TX39XX)
244 /* flush all cache on very early stage (before tx39_cache_init) */
245 static void __init early_flush_dcache(void)
246 {
247 unsigned int conf = read_c0_config();
248 unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
249 TX39_CONF_DCS_SHIFT));
250 unsigned int linesz = 16;
251 unsigned long addr, end;
252
253 end = INDEX_BASE + dc_size / 2;
254 /* 2way, waybit=0 */
255 for (addr = INDEX_BASE; addr < end; addr += linesz) {
256 cache_op(Index_Writeback_Inv_D, addr | 0);
257 cache_op(Index_Writeback_Inv_D, addr | 1);
258 }
259 }
260
261 static void __init txx9_cache_fixup(void)
262 {
263 unsigned int conf;
264
265 conf = read_c0_config();
266 /* flush and disable */
267 if (txx9_ic_disable) {
268 conf &= ~TX39_CONF_ICE;
269 write_c0_config(conf);
270 }
271 if (txx9_dc_disable) {
272 early_flush_dcache();
273 conf &= ~TX39_CONF_DCE;
274 write_c0_config(conf);
275 }
276
277 /* enable cache */
278 conf = read_c0_config();
279 if (!txx9_ic_disable)
280 conf |= TX39_CONF_ICE;
281 if (!txx9_dc_disable)
282 conf |= TX39_CONF_DCE;
283 write_c0_config(conf);
284
285 if (!(conf & TX39_CONF_ICE))
286 pr_info("TX39XX I-Cache disabled.\n");
287 if (!(conf & TX39_CONF_DCE))
288 pr_info("TX39XX D-Cache disabled.\n");
289 }
290 #else
291 static inline void txx9_cache_fixup(void)
292 {
293 }
294 #endif
295
296 static void __init preprocess_cmdline(void)
297 {
298 static char cmdline[COMMAND_LINE_SIZE] __initdata;
299 char *s;
300
301 strcpy(cmdline, arcs_cmdline);
302 s = cmdline;
303 arcs_cmdline[0] = '\0';
304 while (s && *s) {
305 char *str = strsep(&s, " ");
306 if (strncmp(str, "board=", 6) == 0) {
307 txx9_board_vec = find_board_byname(str + 6);
308 continue;
309 } else if (strncmp(str, "masterclk=", 10) == 0) {
310 unsigned long val;
311 if (strict_strtoul(str + 10, 10, &val) == 0)
312 txx9_master_clock = val;
313 continue;
314 } else if (strcmp(str, "icdisable") == 0) {
315 txx9_ic_disable = 1;
316 continue;
317 } else if (strcmp(str, "dcdisable") == 0) {
318 txx9_dc_disable = 1;
319 continue;
320 } else if (strcmp(str, "toeoff") == 0) {
321 txx9_ccfg_toeon = 0;
322 continue;
323 } else if (strcmp(str, "toeon") == 0) {
324 txx9_ccfg_toeon = 1;
325 continue;
326 }
327 if (arcs_cmdline[0])
328 strcat(arcs_cmdline, " ");
329 strcat(arcs_cmdline, str);
330 }
331
332 txx9_cache_fixup();
333 }
334
335 static void __init select_board(void)
336 {
337 const char *envstr;
338
339 /* first, determine by "board=" argument in preprocess_cmdline() */
340 if (txx9_board_vec)
341 return;
342 /* next, determine by "board" envvar */
343 envstr = prom_getenv("board");
344 if (envstr) {
345 txx9_board_vec = find_board_byname(envstr);
346 if (txx9_board_vec)
347 return;
348 }
349
350 /* select "default" board */
351 #ifdef CONFIG_CPU_TX39XX
352 txx9_board_vec = &jmr3927_vec;
353 #endif
354 #ifdef CONFIG_CPU_TX49XX
355 switch (TX4938_REV_PCODE()) {
356 #ifdef CONFIG_TOSHIBA_RBTX4927
357 case 0x4927:
358 txx9_board_vec = &rbtx4927_vec;
359 break;
360 case 0x4937:
361 txx9_board_vec = &rbtx4937_vec;
362 break;
363 #endif
364 #ifdef CONFIG_TOSHIBA_RBTX4938
365 case 0x4938:
366 txx9_board_vec = &rbtx4938_vec;
367 break;
368 #endif
369 #ifdef CONFIG_TOSHIBA_RBTX4939
370 case 0x4939:
371 txx9_board_vec = &rbtx4939_vec;
372 break;
373 #endif
374 }
375 #endif
376 }
377
378 void __init prom_init(void)
379 {
380 prom_init_cmdline();
381 preprocess_cmdline();
382 select_board();
383
384 strcpy(txx9_system_type, txx9_board_vec->system);
385
386 txx9_board_vec->prom_init();
387 }
388
389 void __init prom_free_prom_memory(void)
390 {
391 unsigned long saddr = PAGE_SIZE;
392 unsigned long eaddr = __pa_symbol(&_text);
393
394 if (saddr < eaddr)
395 free_init_pages("prom memory", saddr, eaddr);
396 }
397
398 const char *get_system_type(void)
399 {
400 return txx9_system_type;
401 }
402
403 const char *__init prom_getenv(const char *name)
404 {
405 const s32 *str;
406
407 if (fw_arg2 < CKSEG0)
408 return NULL;
409
410 str = (const s32 *)fw_arg2;
411 /* YAMON style ("name", "value" pairs) */
412 while (str[0] && str[1]) {
413 if (!strcmp((const char *)(unsigned long)str[0], name))
414 return (const char *)(unsigned long)str[1];
415 str += 2;
416 }
417 return NULL;
418 }
419
420 static void __noreturn txx9_machine_halt(void)
421 {
422 local_irq_disable();
423 clear_c0_status(ST0_IM);
424 while (1) {
425 if (cpu_wait) {
426 (*cpu_wait)();
427 if (cpu_has_counter) {
428 /*
429 * Clear counter interrupt while it
430 * breaks WAIT instruction even if
431 * masked.
432 */
433 write_c0_compare(0);
434 }
435 }
436 }
437 }
438
439 /* Watchdog support */
440 void __init txx9_wdt_init(unsigned long base)
441 {
442 struct resource res = {
443 .start = base,
444 .end = base + 0x100 - 1,
445 .flags = IORESOURCE_MEM,
446 };
447 platform_device_register_simple("txx9wdt", -1, &res, 1);
448 }
449
450 void txx9_wdt_now(unsigned long base)
451 {
452 struct txx9_tmr_reg __iomem *tmrptr =
453 ioremap(base, sizeof(struct txx9_tmr_reg));
454 /* disable watch dog timer */
455 __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
456 __raw_writel(0, &tmrptr->tcr);
457 /* kick watchdog */
458 __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
459 __raw_writel(1, &tmrptr->cpra); /* immediate */
460 __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
461 &tmrptr->tcr);
462 }
463
464 /* SPI support */
465 void __init txx9_spi_init(int busid, unsigned long base, int irq)
466 {
467 struct resource res[] = {
468 {
469 .start = base,
470 .end = base + 0x20 - 1,
471 .flags = IORESOURCE_MEM,
472 }, {
473 .start = irq,
474 .flags = IORESOURCE_IRQ,
475 },
476 };
477 platform_device_register_simple("spi_txx9", busid,
478 res, ARRAY_SIZE(res));
479 }
480
481 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
482 {
483 struct platform_device *pdev =
484 platform_device_alloc("tc35815-mac", id);
485 if (!pdev ||
486 platform_device_add_data(pdev, ethaddr, 6) ||
487 platform_device_add(pdev))
488 platform_device_put(pdev);
489 }
490
491 void __init txx9_sio_init(unsigned long baseaddr, int irq,
492 unsigned int line, unsigned int sclk, int nocts)
493 {
494 #ifdef CONFIG_SERIAL_TXX9
495 struct uart_port req;
496
497 memset(&req, 0, sizeof(req));
498 req.line = line;
499 req.iotype = UPIO_MEM;
500 req.membase = ioremap(baseaddr, 0x24);
501 req.mapbase = baseaddr;
502 req.irq = irq;
503 if (!nocts)
504 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
505 if (sclk) {
506 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
507 req.uartclk = sclk;
508 } else
509 req.uartclk = TXX9_IMCLK;
510 early_serial_txx9_setup(&req);
511 #endif /* CONFIG_SERIAL_TXX9 */
512 }
513
514 #ifdef CONFIG_EARLY_PRINTK
515 static void __init null_prom_putchar(char c)
516 {
517 }
518 void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar;
519
520 void __init prom_putchar(char c)
521 {
522 txx9_prom_putchar(c);
523 }
524
525 static void __iomem *early_txx9_sio_port;
526
527 static void __init early_txx9_sio_putchar(char c)
528 {
529 #define TXX9_SICISR 0x0c
530 #define TXX9_SITFIFO 0x1c
531 #define TXX9_SICISR_TXALS 0x00000002
532 while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
533 TXX9_SICISR_TXALS))
534 ;
535 __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
536 }
537
538 void __init txx9_sio_putchar_init(unsigned long baseaddr)
539 {
540 early_txx9_sio_port = ioremap(baseaddr, 0x24);
541 txx9_prom_putchar = early_txx9_sio_putchar;
542 }
543 #endif /* CONFIG_EARLY_PRINTK */
544
545 /* wrappers */
546 void __init plat_mem_setup(void)
547 {
548 ioport_resource.start = 0;
549 ioport_resource.end = ~0UL; /* no limit */
550 iomem_resource.start = 0;
551 iomem_resource.end = ~0UL; /* no limit */
552
553 /* fallback restart/halt routines */
554 _machine_restart = (void (*)(char *))txx9_machine_halt;
555 _machine_halt = txx9_machine_halt;
556 pm_power_off = txx9_machine_halt;
557
558 #ifdef CONFIG_PCI
559 pcibios_plat_setup = txx9_pcibios_setup;
560 #endif
561 txx9_board_vec->mem_setup();
562 }
563
564 void __init arch_init_irq(void)
565 {
566 txx9_board_vec->irq_setup();
567 }
568
569 void __init plat_time_init(void)
570 {
571 #ifdef CONFIG_CPU_TX49XX
572 mips_hpt_frequency = txx9_cpu_clock / 2;
573 #endif
574 txx9_board_vec->time_init();
575 }
576
577 static int __init _txx9_arch_init(void)
578 {
579 if (txx9_board_vec->arch_init)
580 txx9_board_vec->arch_init();
581 return 0;
582 }
583 arch_initcall(_txx9_arch_init);
584
585 static int __init _txx9_device_init(void)
586 {
587 if (txx9_board_vec->device_init)
588 txx9_board_vec->device_init();
589 return 0;
590 }
591 device_initcall(_txx9_device_init);
592
593 int (*txx9_irq_dispatch)(int pending);
594 asmlinkage void plat_irq_dispatch(void)
595 {
596 int pending = read_c0_status() & read_c0_cause() & ST0_IM;
597 int irq = txx9_irq_dispatch(pending);
598
599 if (likely(irq >= 0))
600 do_IRQ(irq);
601 else
602 spurious_interrupt();
603 }
604
605 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
606 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
607 static unsigned long __swizzle_addr_none(unsigned long port)
608 {
609 return port;
610 }
611 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
612 EXPORT_SYMBOL(__swizzle_addr_b);
613 #endif
614
615 #ifdef NEEDS_TXX9_IOSWABW
616 static u16 ioswabw_default(volatile u16 *a, u16 x)
617 {
618 return le16_to_cpu(x);
619 }
620 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
621 {
622 return x;
623 }
624 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
625 EXPORT_SYMBOL(ioswabw);
626 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
627 EXPORT_SYMBOL(__mem_ioswabw);
628 #endif
629
630 void __init txx9_physmap_flash_init(int no, unsigned long addr,
631 unsigned long size,
632 const struct physmap_flash_data *pdata)
633 {
634 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
635 struct resource res = {
636 .start = addr,
637 .end = addr + size - 1,
638 .flags = IORESOURCE_MEM,
639 };
640 struct platform_device *pdev;
641 #ifdef CONFIG_MTD_PARTITIONS
642 static struct mtd_partition parts[2];
643 struct physmap_flash_data pdata_part;
644
645 /* If this area contained boot area, make separate partition */
646 if (pdata->nr_parts == 0 && !pdata->parts &&
647 addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
648 !parts[0].name) {
649 parts[0].name = "boot";
650 parts[0].offset = 0x1fc00000 - addr;
651 parts[0].size = addr + size - 0x1fc00000;
652 parts[1].name = "user";
653 parts[1].offset = 0;
654 parts[1].size = 0x1fc00000 - addr;
655 pdata_part = *pdata;
656 pdata_part.nr_parts = ARRAY_SIZE(parts);
657 pdata_part.parts = parts;
658 pdata = &pdata_part;
659 }
660 #endif
661 pdev = platform_device_alloc("physmap-flash", no);
662 if (!pdev ||
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);
667 #endif
668 }
669
670 void __init txx9_ndfmc_init(unsigned long baseaddr,
671 const struct txx9ndfmc_platform_data *pdata)
672 {
673 #if defined(CONFIG_MTD_NAND_TXX9NDFMC) || \
674 defined(CONFIG_MTD_NAND_TXX9NDFMC_MODULE)
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 defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
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 defined(CONFIG_TXX9_DMAC) || defined(CONFIG_TXX9_DMAC_MODULE)
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 defined(CONFIG_SND_SOC_TXX9ACLC) || \
870 defined(CONFIG_SND_SOC_TXX9ACLC_MODULE)
871 unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
872 struct resource res[] = {
873 {
874 .start = baseaddr,
875 .end = baseaddr + 0x100 - 1,
876 .flags = IORESOURCE_MEM,
877 }, {
878 .start = irq,
879 .flags = IORESOURCE_IRQ,
880 }, {
881 .name = "txx9dmac-chan",
882 .start = dma_base + dma_chan_out,
883 .flags = IORESOURCE_DMA,
884 }, {
885 .name = "txx9dmac-chan",
886 .start = dma_base + dma_chan_in,
887 .flags = IORESOURCE_DMA,
888 }
889 };
890 struct platform_device *pdev =
891 platform_device_alloc("txx9aclc-ac97", -1);
892
893 if (!pdev ||
894 platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
895 platform_device_add(pdev))
896 platform_device_put(pdev);
897 #endif
898 }
899
900 static struct sysdev_class txx9_sramc_sysdev_class;
901
902 struct txx9_sramc_sysdev {
903 struct sys_device dev;
904 struct bin_attribute bindata_attr;
905 void __iomem *base;
906 };
907
908 static ssize_t txx9_sram_read(struct kobject *kobj,
909 struct bin_attribute *bin_attr,
910 char *buf, loff_t pos, size_t size)
911 {
912 struct txx9_sramc_sysdev *dev = bin_attr->private;
913 size_t ramsize = bin_attr->size;
914
915 if (pos >= ramsize)
916 return 0;
917 if (pos + size > ramsize)
918 size = ramsize - pos;
919 memcpy_fromio(buf, dev->base + pos, size);
920 return size;
921 }
922
923 static ssize_t txx9_sram_write(struct kobject *kobj,
924 struct bin_attribute *bin_attr,
925 char *buf, loff_t pos, size_t size)
926 {
927 struct txx9_sramc_sysdev *dev = bin_attr->private;
928 size_t ramsize = bin_attr->size;
929
930 if (pos >= ramsize)
931 return 0;
932 if (pos + size > ramsize)
933 size = ramsize - pos;
934 memcpy_toio(dev->base + pos, buf, size);
935 return size;
936 }
937
938 void __init txx9_sramc_init(struct resource *r)
939 {
940 struct txx9_sramc_sysdev *dev;
941 size_t size;
942 int err;
943
944 if (!txx9_sramc_sysdev_class.name) {
945 txx9_sramc_sysdev_class.name = "txx9_sram";
946 err = sysdev_class_register(&txx9_sramc_sysdev_class);
947 if (err) {
948 txx9_sramc_sysdev_class.name = NULL;
949 return;
950 }
951 }
952 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
953 if (!dev)
954 return;
955 size = resource_size(r);
956 dev->base = ioremap(r->start, size);
957 if (!dev->base)
958 goto exit;
959 dev->dev.cls = &txx9_sramc_sysdev_class;
960 sysfs_bin_attr_init(&dev->bindata_attr);
961 dev->bindata_attr.attr.name = "bindata";
962 dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
963 dev->bindata_attr.read = txx9_sram_read;
964 dev->bindata_attr.write = txx9_sram_write;
965 dev->bindata_attr.size = size;
966 dev->bindata_attr.private = dev;
967 err = sysdev_register(&dev->dev);
968 if (err)
969 goto exit;
970 err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
971 if (err) {
972 sysdev_unregister(&dev->dev);
973 goto exit;
974 }
975 return;
976 exit:
977 if (dev) {
978 if (dev->base)
979 iounmap(dev->base);
980 kfree(dev);
981 }
982 }
kernel source for telekom puls (alcatel/mediatek)