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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/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
 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 #ifdef CONFIG_CPU_TX39XX
 82 /* don't enable by default - see errata */
 83 int txx9_ccfg_toeon __initdata;
 84 #else
 85 int txx9_ccfg_toeon __initdata = 1;
 86 #endif
 87 
 88 #define BOARD_VEC(board)        extern struct txx9_board_vec board;
 89 #include <asm/txx9/boards.h>
 90 #undef BOARD_VEC
 91 
 92 struct txx9_board_vec *txx9_board_vec __initdata;
 93 static char txx9_system_type[32];
 94 
 95 static struct txx9_board_vec *board_vecs[] __initdata = {
 96 #define BOARD_VEC(board)        &board,
 97 #include <asm/txx9/boards.h>
 98 #undef BOARD_VEC
 99 };
100 
101 static struct txx9_board_vec *__init find_board_byname(const char *name)
102 {
103         int i;
104 
105         /* search board_vecs table */
106         for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
107                 if (strstr(board_vecs[i]->system, name))
108                         return board_vecs[i];
109         }
110         return NULL;
111 }
112 
113 static void __init prom_init_cmdline(void)
114 {
115         int argc;
116         int *argv32;
117         int i;                  /* Always ignore the "-c" at argv[0] */
118 
119         if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
120                 /*
121                  * argc is not a valid number, or argv32 is not a valid
122                  * pointer
123                  */
124                 argc = 0;
125                 argv32 = NULL;
126         } else {
127                 argc = (int)fw_arg0;
128                 argv32 = (int *)fw_arg1;
129         }
130 
131         arcs_cmdline[0] = '\0';
132 
133         for (i = 1; i < argc; i++) {
134                 char *str = (char *)(long)argv32[i];
135                 if (i != 1)
136                         strcat(arcs_cmdline, " ");
137                 if (strchr(str, ' ')) {
138                         strcat(arcs_cmdline, "\"");
139                         strcat(arcs_cmdline, str);
140                         strcat(arcs_cmdline, "\"");
141                 } else
142                         strcat(arcs_cmdline, str);
143         }
144 }
145 
146 static int txx9_ic_disable __initdata;
147 static int txx9_dc_disable __initdata;
148 
149 #if defined(CONFIG_CPU_TX49XX)
150 /* flush all cache on very early stage (before 4k_cache_init) */
151 static void __init early_flush_dcache(void)
152 {
153         unsigned int conf = read_c0_config();
154         unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
155         unsigned int linesz = 32;
156         unsigned long addr, end;
157 
158         end = INDEX_BASE + dc_size / 4;
159         /* 4way, waybit=0 */
160         for (addr = INDEX_BASE; addr < end; addr += linesz) {
161                 cache_op(Index_Writeback_Inv_D, addr | 0);
162                 cache_op(Index_Writeback_Inv_D, addr | 1);
163                 cache_op(Index_Writeback_Inv_D, addr | 2);
164                 cache_op(Index_Writeback_Inv_D, addr | 3);
165         }
166 }
167 
168 static void __init txx9_cache_fixup(void)
169 {
170         unsigned int conf;
171 
172         conf = read_c0_config();
173         /* flush and disable */
174         if (txx9_ic_disable) {
175                 conf |= TX49_CONF_IC;
176                 write_c0_config(conf);
177         }
178         if (txx9_dc_disable) {
179                 early_flush_dcache();
180                 conf |= TX49_CONF_DC;
181                 write_c0_config(conf);
182         }
183 
184         /* enable cache */
185         conf = read_c0_config();
186         if (!txx9_ic_disable)
187                 conf &= ~TX49_CONF_IC;
188         if (!txx9_dc_disable)
189                 conf &= ~TX49_CONF_DC;
190         write_c0_config(conf);
191 
192         if (conf & TX49_CONF_IC)
193                 pr_info("TX49XX I-Cache disabled.\n");
194         if (conf & TX49_CONF_DC)
195                 pr_info("TX49XX D-Cache disabled.\n");
196 }
197 #elif defined(CONFIG_CPU_TX39XX)
198 /* flush all cache on very early stage (before tx39_cache_init) */
199 static void __init early_flush_dcache(void)
200 {
201         unsigned int conf = read_c0_config();
202         unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
203                                            TX39_CONF_DCS_SHIFT));
204         unsigned int linesz = 16;
205         unsigned long addr, end;
206 
207         end = INDEX_BASE + dc_size / 2;
208         /* 2way, waybit=0 */
209         for (addr = INDEX_BASE; addr < end; addr += linesz) {
210                 cache_op(Index_Writeback_Inv_D, addr | 0);
211                 cache_op(Index_Writeback_Inv_D, addr | 1);
212         }
213 }
214 
215 static void __init txx9_cache_fixup(void)
216 {
217         unsigned int conf;
218 
219         conf = read_c0_config();
220         /* flush and disable */
221         if (txx9_ic_disable) {
222                 conf &= ~TX39_CONF_ICE;
223                 write_c0_config(conf);
224         }
225         if (txx9_dc_disable) {
226                 early_flush_dcache();
227                 conf &= ~TX39_CONF_DCE;
228                 write_c0_config(conf);
229         }
230 
231         /* enable cache */
232         conf = read_c0_config();
233         if (!txx9_ic_disable)
234                 conf |= TX39_CONF_ICE;
235         if (!txx9_dc_disable)
236                 conf |= TX39_CONF_DCE;
237         write_c0_config(conf);
238 
239         if (!(conf & TX39_CONF_ICE))
240                 pr_info("TX39XX I-Cache disabled.\n");
241         if (!(conf & TX39_CONF_DCE))
242                 pr_info("TX39XX D-Cache disabled.\n");
243 }
244 #else
245 static inline void txx9_cache_fixup(void)
246 {
247 }
248 #endif
249 
250 static void __init preprocess_cmdline(void)
251 {
252         static char cmdline[COMMAND_LINE_SIZE] __initdata;
253         char *s;
254 
255         strcpy(cmdline, arcs_cmdline);
256         s = cmdline;
257         arcs_cmdline[0] = '\0';
258         while (s && *s) {
259                 char *str = strsep(&s, " ");
260                 if (strncmp(str, "board=", 6) == 0) {
261                         txx9_board_vec = find_board_byname(str + 6);
262                         continue;
263                 } else if (strncmp(str, "masterclk=", 10) == 0) {
264                         unsigned int val;
265                         if (kstrtouint(str + 10, 10, &val) == 0)
266                                 txx9_master_clock = val;
267                         continue;
268                 } else if (strcmp(str, "icdisable") == 0) {
269                         txx9_ic_disable = 1;
270                         continue;
271                 } else if (strcmp(str, "dcdisable") == 0) {
272                         txx9_dc_disable = 1;
273                         continue;
274                 } else if (strcmp(str, "toeoff") == 0) {
275                         txx9_ccfg_toeon = 0;
276                         continue;
277                 } else if (strcmp(str, "toeon") == 0) {
278                         txx9_ccfg_toeon = 1;
279                         continue;
280                 }
281                 if (arcs_cmdline[0])
282                         strcat(arcs_cmdline, " ");
283                 strcat(arcs_cmdline, str);
284         }
285 
286         txx9_cache_fixup();
287 }
288 
289 static void __init select_board(void)
290 {
291         const char *envstr;
292 
293         /* first, determine by "board=" argument in preprocess_cmdline() */
294         if (txx9_board_vec)
295                 return;
296         /* next, determine by "board" envvar */
297         envstr = prom_getenv("board");
298         if (envstr) {
299                 txx9_board_vec = find_board_byname(envstr);
300                 if (txx9_board_vec)
301                         return;
302         }
303 
304         /* select "default" board */
305 #ifdef CONFIG_TOSHIBA_JMR3927
306         txx9_board_vec = &jmr3927_vec;
307 #endif
308 #ifdef CONFIG_CPU_TX49XX
309         switch (TX4938_REV_PCODE()) {
310 #ifdef CONFIG_TOSHIBA_RBTX4927
311         case 0x4927:
312                 txx9_board_vec = &rbtx4927_vec;
313                 break;
314         case 0x4937:
315                 txx9_board_vec = &rbtx4937_vec;
316                 break;
317 #endif
318 #ifdef CONFIG_TOSHIBA_RBTX4938
319         case 0x4938:
320                 txx9_board_vec = &rbtx4938_vec;
321                 break;
322 #endif
323 #ifdef CONFIG_TOSHIBA_RBTX4939
324         case 0x4939:
325                 txx9_board_vec = &rbtx4939_vec;
326                 break;
327 #endif
328         }
329 #endif
330 }
331 
332 void __init prom_init(void)
333 {
334         prom_init_cmdline();
335         preprocess_cmdline();
336         select_board();
337 
338         strcpy(txx9_system_type, txx9_board_vec->system);
339 
340         txx9_board_vec->prom_init();
341 }
342 
343 void __init prom_free_prom_memory(void)
344 {
345 }
346 
347 const char *get_system_type(void)
348 {
349         return txx9_system_type;
350 }
351 
352 const char *__init prom_getenv(const char *name)
353 {
354         const s32 *str;
355 
356         if (fw_arg2 < CKSEG0)
357                 return NULL;
358 
359         str = (const s32 *)fw_arg2;
360         /* YAMON style ("name", "value" pairs) */
361         while (str[0] && str[1]) {
362                 if (!strcmp((const char *)(unsigned long)str[0], name))
363                         return (const char *)(unsigned long)str[1];
364                 str += 2;
365         }
366         return NULL;
367 }
368 
369 static void __noreturn txx9_machine_halt(void)
370 {
371         local_irq_disable();
372         clear_c0_status(ST0_IM);
373         while (1) {
374                 if (cpu_wait) {
375                         (*cpu_wait)();
376                         if (cpu_has_counter) {
377                                 /*
378                                  * Clear counter interrupt while it
379                                  * breaks WAIT instruction even if
380                                  * masked.
381                                  */
382                                 write_c0_compare(0);
383                         }
384                 }
385         }
386 }
387 
388 /* Watchdog support */
389 void __init txx9_wdt_init(unsigned long base)
390 {
391         struct resource res = {
392                 .start  = base,
393                 .end    = base + 0x100 - 1,
394                 .flags  = IORESOURCE_MEM,
395         };
396         platform_device_register_simple("txx9wdt", -1, &res, 1);
397 }
398 
399 void txx9_wdt_now(unsigned long base)
400 {
401         struct txx9_tmr_reg __iomem *tmrptr =
402                 ioremap(base, sizeof(struct txx9_tmr_reg));
403         /* disable watch dog timer */
404         __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
405         __raw_writel(0, &tmrptr->tcr);
406         /* kick watchdog */
407         __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
408         __raw_writel(1, &tmrptr->cpra); /* immediate */
409         __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
410                      &tmrptr->tcr);
411 }
412 
413 /* SPI support */
414 void __init txx9_spi_init(int busid, unsigned long base, int irq)
415 {
416         struct resource res[] = {
417                 {
418                         .start  = base,
419                         .end    = base + 0x20 - 1,
420                         .flags  = IORESOURCE_MEM,
421                 }, {
422                         .start  = irq,
423                         .flags  = IORESOURCE_IRQ,
424                 },
425         };
426         platform_device_register_simple("spi_txx9", busid,
427                                         res, ARRAY_SIZE(res));
428 }
429 
430 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
431 {
432         struct platform_device *pdev =
433                 platform_device_alloc("tc35815-mac", id);
434         if (!pdev ||
435             platform_device_add_data(pdev, ethaddr, 6) ||
436             platform_device_add(pdev))
437                 platform_device_put(pdev);
438 }
439 
440 void __init txx9_sio_init(unsigned long baseaddr, int irq,
441                           unsigned int line, unsigned int sclk, int nocts)
442 {
443 #ifdef CONFIG_SERIAL_TXX9
444         struct uart_port req;
445 
446         memset(&req, 0, sizeof(req));
447         req.line = line;
448         req.iotype = UPIO_MEM;
449         req.membase = ioremap(baseaddr, 0x24);
450         req.mapbase = baseaddr;
451         req.irq = irq;
452         if (!nocts)
453                 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
454         if (sclk) {
455                 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
456                 req.uartclk = sclk;
457         } else
458                 req.uartclk = TXX9_IMCLK;
459         early_serial_txx9_setup(&req);
460 #endif /* CONFIG_SERIAL_TXX9 */
461 }
462 
463 #ifdef CONFIG_EARLY_PRINTK
464 static void null_prom_putchar(char c)
465 {
466 }
467 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
468 
469 void prom_putchar(char c)
470 {
471         txx9_prom_putchar(c);
472 }
473 
474 static void __iomem *early_txx9_sio_port;
475 
476 static void early_txx9_sio_putchar(char c)
477 {
478 #define TXX9_SICISR     0x0c
479 #define TXX9_SITFIFO    0x1c
480 #define TXX9_SICISR_TXALS       0x00000002
481         while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
482                  TXX9_SICISR_TXALS))
483                 ;
484         __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
485 }
486 
487 void __init txx9_sio_putchar_init(unsigned long baseaddr)
488 {
489         early_txx9_sio_port = ioremap(baseaddr, 0x24);
490         txx9_prom_putchar = early_txx9_sio_putchar;
491 }
492 #endif /* CONFIG_EARLY_PRINTK */
493 
494 /* wrappers */
495 void __init plat_mem_setup(void)
496 {
497         ioport_resource.start = 0;
498         ioport_resource.end = ~0UL;     /* no limit */
499         iomem_resource.start = 0;
500         iomem_resource.end = ~0UL;      /* no limit */
501 
502         /* fallback restart/halt routines */
503         _machine_restart = (void (*)(char *))txx9_machine_halt;
504         _machine_halt = txx9_machine_halt;
505         pm_power_off = txx9_machine_halt;
506 
507 #ifdef CONFIG_PCI
508         pcibios_plat_setup = txx9_pcibios_setup;
509 #endif
510         txx9_board_vec->mem_setup();
511 }
512 
513 void __init arch_init_irq(void)
514 {
515         txx9_board_vec->irq_setup();
516 }
517 
518 void __init plat_time_init(void)
519 {
520 #ifdef CONFIG_CPU_TX49XX
521         mips_hpt_frequency = txx9_cpu_clock / 2;
522 #endif
523         txx9_board_vec->time_init();
524 }
525 
526 static void txx9_clk_init(void)
527 {
528         struct clk_hw *hw;
529         int error;
530 
531         hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
532         if (IS_ERR(hw)) {
533                 error = PTR_ERR(hw);
534                 goto fail;
535         }
536 
537         hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
538         error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
539         if (error)
540                 goto fail;
541 
542 #ifdef CONFIG_CPU_TX49XX
543         if (TX4938_REV_PCODE() == 0x4938) {
544                 hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
545                 error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
546                 if (error)
547                         goto fail;
548         }
549 #endif
550 
551         return;
552 
553 fail:
554         pr_err("Failed to register clocks: %d\n", error);
555 }
556 
557 static int __init _txx9_arch_init(void)
558 {
559         txx9_clk_init();
560 
561         if (txx9_board_vec->arch_init)
562                 txx9_board_vec->arch_init();
563         return 0;
564 }
565 arch_initcall(_txx9_arch_init);
566 
567 static int __init _txx9_device_init(void)
568 {
569         if (txx9_board_vec->device_init)
570                 txx9_board_vec->device_init();
571         return 0;
572 }
573 device_initcall(_txx9_device_init);
574 
575 int (*txx9_irq_dispatch)(int pending);
576 asmlinkage void plat_irq_dispatch(void)
577 {
578         int pending = read_c0_status() & read_c0_cause() & ST0_IM;
579         int irq = txx9_irq_dispatch(pending);
580 
581         if (likely(irq >= 0))
582                 do_IRQ(irq);
583         else
584                 spurious_interrupt();
585 }
586 
587 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
588 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
589 static unsigned long __swizzle_addr_none(unsigned long port)
590 {
591         return port;
592 }
593 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
594 EXPORT_SYMBOL(__swizzle_addr_b);
595 #endif
596 
597 #ifdef NEEDS_TXX9_IOSWABW
598 static u16 ioswabw_default(volatile u16 *a, u16 x)
599 {
600         return le16_to_cpu(x);
601 }
602 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
603 {
604         return x;
605 }
606 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
607 EXPORT_SYMBOL(ioswabw);
608 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
609 EXPORT_SYMBOL(__mem_ioswabw);
610 #endif
611 
612 void __init txx9_physmap_flash_init(int no, unsigned long addr,
613                                     unsigned long size,
614                                     const struct physmap_flash_data *pdata)
615 {
616 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
617         struct resource res = {
618                 .start = addr,
619                 .end = addr + size - 1,
620                 .flags = IORESOURCE_MEM,
621         };
622         struct platform_device *pdev;
623         static struct mtd_partition parts[2];
624         struct physmap_flash_data pdata_part;
625 
626         /* If this area contained boot area, make separate partition */
627         if (pdata->nr_parts == 0 && !pdata->parts &&
628             addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
629             !parts[0].name) {
630                 parts[0].name = "boot";
631                 parts[0].offset = 0x1fc00000 - addr;
632                 parts[0].size = addr + size - 0x1fc00000;
633                 parts[1].name = "user";
634                 parts[1].offset = 0;
635                 parts[1].size = 0x1fc00000 - addr;
636                 pdata_part = *pdata;
637                 pdata_part.nr_parts = ARRAY_SIZE(parts);
638                 pdata_part.parts = parts;
639                 pdata = &pdata_part;
640         }
641 
642         pdev = platform_device_alloc("physmap-flash", no);
643         if (!pdev ||
644             platform_device_add_resources(pdev, &res, 1) ||
645             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
646             platform_device_add(pdev))
647                 platform_device_put(pdev);
648 #endif
649 }
650 
651 void __init txx9_ndfmc_init(unsigned long baseaddr,
652                             const struct txx9ndfmc_platform_data *pdata)
653 {
654 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
655         struct resource res = {
656                 .start = baseaddr,
657                 .end = baseaddr + 0x1000 - 1,
658                 .flags = IORESOURCE_MEM,
659         };
660         struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
661 
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 #if IS_ENABLED(CONFIG_LEDS_GPIO)
671 static DEFINE_SPINLOCK(txx9_iocled_lock);
672 
673 #define TXX9_IOCLED_MAXLEDS 8
674 
675 struct txx9_iocled_data {
676         struct gpio_chip chip;
677         u8 cur_val;
678         void __iomem *mmioaddr;
679         struct gpio_led_platform_data pdata;
680         struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
681         char names[TXX9_IOCLED_MAXLEDS][32];
682 };
683 
684 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
685 {
686         struct txx9_iocled_data *data = gpiochip_get_data(chip);
687         return !!(data->cur_val & (1 << offset));
688 }
689 
690 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
691                             int value)
692 {
693         struct txx9_iocled_data *data = gpiochip_get_data(chip);
694         unsigned long flags;
695         spin_lock_irqsave(&txx9_iocled_lock, flags);
696         if (value)
697                 data->cur_val |= 1 << offset;
698         else
699                 data->cur_val &= ~(1 << offset);
700         writeb(data->cur_val, data->mmioaddr);
701         mmiowb();
702         spin_unlock_irqrestore(&txx9_iocled_lock, flags);
703 }
704 
705 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
706 {
707         return 0;
708 }
709 
710 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
711                                int value)
712 {
713         txx9_iocled_set(chip, offset, value);
714         return 0;
715 }
716 
717 void __init txx9_iocled_init(unsigned long baseaddr,
718                              int basenum, unsigned int num, int lowactive,
719                              const char *color, char **deftriggers)
720 {
721         struct txx9_iocled_data *iocled;
722         struct platform_device *pdev;
723         int i;
724         static char *default_triggers[] __initdata = {
725                 "heartbeat",
726                 "disk-activity",
727                 "nand-disk",
728                 NULL,
729         };
730 
731         if (!deftriggers)
732                 deftriggers = default_triggers;
733         iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
734         if (!iocled)
735                 return;
736         iocled->mmioaddr = ioremap(baseaddr, 1);
737         if (!iocled->mmioaddr)
738                 goto out_free;
739         iocled->chip.get = txx9_iocled_get;
740         iocled->chip.set = txx9_iocled_set;
741         iocled->chip.direction_input = txx9_iocled_dir_in;
742         iocled->chip.direction_output = txx9_iocled_dir_out;
743         iocled->chip.label = "iocled";
744         iocled->chip.base = basenum;
745         iocled->chip.ngpio = num;
746         if (gpiochip_add_data(&iocled->chip, iocled))
747                 goto out_unmap;
748         if (basenum < 0)
749                 basenum = iocled->chip.base;
750 
751         pdev = platform_device_alloc("leds-gpio", basenum);
752         if (!pdev)
753                 goto out_gpio;
754         iocled->pdata.num_leds = num;
755         iocled->pdata.leds = iocled->leds;
756         for (i = 0; i < num; i++) {
757                 struct gpio_led *led = &iocled->leds[i];
758                 snprintf(iocled->names[i], sizeof(iocled->names[i]),
759                          "iocled:%s:%u", color, i);
760                 led->name = iocled->names[i];
761                 led->gpio = basenum + i;
762                 led->active_low = lowactive;
763                 if (deftriggers && *deftriggers)
764                         led->default_trigger = *deftriggers++;
765         }
766         pdev->dev.platform_data = &iocled->pdata;
767         if (platform_device_add(pdev))
768                 goto out_pdev;
769         return;
770 
771 out_pdev:
772         platform_device_put(pdev);
773 out_gpio:
774         gpiochip_remove(&iocled->chip);
775 out_unmap:
776         iounmap(iocled->mmioaddr);
777 out_free:
778         kfree(iocled);
779 }
780 #else /* CONFIG_LEDS_GPIO */
781 void __init txx9_iocled_init(unsigned long baseaddr,
782                              int basenum, unsigned int num, int lowactive,
783                              const char *color, char **deftriggers)
784 {
785 }
786 #endif /* CONFIG_LEDS_GPIO */
787 
788 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
789                            const struct txx9dmac_platform_data *pdata)
790 {
791 #if IS_ENABLED(CONFIG_TXX9_DMAC)
792         struct resource res[] = {
793                 {
794                         .start = baseaddr,
795                         .end = baseaddr + 0x800 - 1,
796                         .flags = IORESOURCE_MEM,
797 #ifndef CONFIG_MACH_TX49XX
798                 }, {
799                         .start = irq,
800                         .flags = IORESOURCE_IRQ,
801 #endif
802                 }
803         };
804 #ifdef CONFIG_MACH_TX49XX
805         struct resource chan_res[] = {
806                 {
807                         .flags = IORESOURCE_IRQ,
808                 }
809         };
810 #endif
811         struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
812         struct txx9dmac_chan_platform_data cpdata;
813         int i;
814 
815         if (!pdev ||
816             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
817             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
818             platform_device_add(pdev)) {
819                 platform_device_put(pdev);
820                 return;
821         }
822         memset(&cpdata, 0, sizeof(cpdata));
823         cpdata.dmac_dev = pdev;
824         for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
825 #ifdef CONFIG_MACH_TX49XX
826                 chan_res[0].start = irq + i;
827 #endif
828                 pdev = platform_device_alloc("txx9dmac-chan",
829                                              id * TXX9_DMA_MAX_NR_CHANNELS + i);
830                 if (!pdev ||
831 #ifdef CONFIG_MACH_TX49XX
832                     platform_device_add_resources(pdev, chan_res,
833                                                   ARRAY_SIZE(chan_res)) ||
834 #endif
835                     platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
836                     platform_device_add(pdev))
837                         platform_device_put(pdev);
838         }
839 #endif
840 }
841 
842 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
843                            unsigned int dmac_id,
844                            unsigned int dma_chan_out,
845                            unsigned int dma_chan_in)
846 {
847 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
848         unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
849         struct resource res[] = {
850                 {
851                         .start = baseaddr,
852                         .end = baseaddr + 0x100 - 1,
853                         .flags = IORESOURCE_MEM,
854                 }, {
855                         .start = irq,
856                         .flags = IORESOURCE_IRQ,
857                 }, {
858                         .name = "txx9dmac-chan",
859                         .start = dma_base + dma_chan_out,
860                         .flags = IORESOURCE_DMA,
861                 }, {
862                         .name = "txx9dmac-chan",
863                         .start = dma_base + dma_chan_in,
864                         .flags = IORESOURCE_DMA,
865                 }
866         };
867         struct platform_device *pdev =
868                 platform_device_alloc("txx9aclc-ac97", -1);
869 
870         if (!pdev ||
871             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
872             platform_device_add(pdev))
873                 platform_device_put(pdev);
874 #endif
875 }
876 
877 static struct bus_type txx9_sramc_subsys = {
878         .name = "txx9_sram",
879         .dev_name = "txx9_sram",
880 };
881 
882 struct txx9_sramc_dev {
883         struct device dev;
884         struct bin_attribute bindata_attr;
885         void __iomem *base;
886 };
887 
888 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
889                               struct bin_attribute *bin_attr,
890                               char *buf, loff_t pos, size_t size)
891 {
892         struct txx9_sramc_dev *dev = bin_attr->private;
893         size_t ramsize = bin_attr->size;
894 
895         if (pos >= ramsize)
896                 return 0;
897         if (pos + size > ramsize)
898                 size = ramsize - pos;
899         memcpy_fromio(buf, dev->base + pos, size);
900         return size;
901 }
902 
903 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
904                                struct bin_attribute *bin_attr,
905                                char *buf, loff_t pos, size_t size)
906 {
907         struct txx9_sramc_dev *dev = bin_attr->private;
908         size_t ramsize = bin_attr->size;
909 
910         if (pos >= ramsize)
911                 return 0;
912         if (pos + size > ramsize)
913                 size = ramsize - pos;
914         memcpy_toio(dev->base + pos, buf, size);
915         return size;
916 }
917 
918 static void txx9_device_release(struct device *dev)
919 {
920         struct txx9_sramc_dev *tdev;
921 
922         tdev = container_of(dev, struct txx9_sramc_dev, dev);
923         kfree(tdev);
924 }
925 
926 void __init txx9_sramc_init(struct resource *r)
927 {
928         struct txx9_sramc_dev *dev;
929         size_t size;
930         int err;
931 
932         err = subsys_system_register(&txx9_sramc_subsys, NULL);
933         if (err)
934                 return;
935         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
936         if (!dev)
937                 return;
938         size = resource_size(r);
939         dev->base = ioremap(r->start, size);
940         if (!dev->base) {
941                 kfree(dev);
942                 return;
943         }
944         dev->dev.release = &txx9_device_release;
945         dev->dev.bus = &txx9_sramc_subsys;
946         sysfs_bin_attr_init(&dev->bindata_attr);
947         dev->bindata_attr.attr.name = "bindata";
948         dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
949         dev->bindata_attr.read = txx9_sram_read;
950         dev->bindata_attr.write = txx9_sram_write;
951         dev->bindata_attr.size = size;
952         dev->bindata_attr.private = dev;
953         err = device_register(&dev->dev);
954         if (err)
955                 goto exit_put;
956         err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
957         if (err) {
958                 iounmap(dev->base);
959                 device_unregister(&dev->dev);
960         }
961         return;
962 exit_put:
963         iounmap(dev->base);
964         put_device(&dev->dev);
965 }
966 

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