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Linux/arch/mips/txx9/generic/setup.c

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  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_CPU_TX39XX
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 }
980 

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