~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/mips/txx9/generic/setup.c

Version: ~ [ linux-5.4-rc3 ] ~ [ linux-5.3.6 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.79 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.149 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.196 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.196 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.75 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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/serial_core.h>
 24 #include <linux/mtd/physmap.h>
 25 #include <linux/leds.h>
 26 #include <linux/device.h>
 27 #include <linux/slab.h>
 28 #include <linux/irq.h>
 29 #include <asm/bootinfo.h>
 30 #include <asm/idle.h>
 31 #include <asm/time.h>
 32 #include <asm/reboot.h>
 33 #include <asm/r4kcache.h>
 34 #include <asm/sections.h>
 35 #include <asm/txx9/generic.h>
 36 #include <asm/txx9/pci.h>
 37 #include <asm/txx9tmr.h>
 38 #include <asm/txx9/ndfmc.h>
 39 #include <asm/txx9/dmac.h>
 40 #ifdef CONFIG_CPU_TX49XX
 41 #include <asm/txx9/tx4938.h>
 42 #endif
 43 
 44 /* EBUSC settings of TX4927, etc. */
 45 struct resource txx9_ce_res[8];
 46 static char txx9_ce_res_name[8][4];     /* "CEn" */
 47 
 48 /* pcode, internal register */
 49 unsigned int txx9_pcode;
 50 char txx9_pcode_str[8];
 51 static struct resource txx9_reg_res = {
 52         .name = txx9_pcode_str,
 53         .flags = IORESOURCE_MEM,
 54 };
 55 void __init
 56 txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
 57 {
 58         int i;
 59 
 60         for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
 61                 sprintf(txx9_ce_res_name[i], "CE%d", i);
 62                 txx9_ce_res[i].flags = IORESOURCE_MEM;
 63                 txx9_ce_res[i].name = txx9_ce_res_name[i];
 64         }
 65 
 66         txx9_pcode = pcode;
 67         sprintf(txx9_pcode_str, "TX%x", pcode);
 68         if (base) {
 69                 txx9_reg_res.start = base & 0xfffffffffULL;
 70                 txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
 71                 request_resource(&iomem_resource, &txx9_reg_res);
 72         }
 73 }
 74 
 75 /* clocks */
 76 unsigned int txx9_master_clock;
 77 unsigned int txx9_cpu_clock;
 78 unsigned int txx9_gbus_clock;
 79 
 80 #ifdef CONFIG_CPU_TX39XX
 81 /* don't enable by default - see errata */
 82 int txx9_ccfg_toeon __initdata;
 83 #else
 84 int txx9_ccfg_toeon __initdata = 1;
 85 #endif
 86 
 87 #define BOARD_VEC(board)        extern struct txx9_board_vec board;
 88 #include <asm/txx9/boards.h>
 89 #undef BOARD_VEC
 90 
 91 struct txx9_board_vec *txx9_board_vec __initdata;
 92 static char txx9_system_type[32];
 93 
 94 static struct txx9_board_vec *board_vecs[] __initdata = {
 95 #define BOARD_VEC(board)        &board,
 96 #include <asm/txx9/boards.h>
 97 #undef BOARD_VEC
 98 };
 99 
100 static struct txx9_board_vec *__init find_board_byname(const char *name)
101 {
102         int i;
103 
104         /* search board_vecs table */
105         for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
106                 if (strstr(board_vecs[i]->system, name))
107                         return board_vecs[i];
108         }
109         return NULL;
110 }
111 
112 static void __init prom_init_cmdline(void)
113 {
114         int argc;
115         int *argv32;
116         int i;                  /* Always ignore the "-c" at argv[0] */
117 
118         if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
119                 /*
120                  * argc is not a valid number, or argv32 is not a valid
121                  * pointer
122                  */
123                 argc = 0;
124                 argv32 = NULL;
125         } else {
126                 argc = (int)fw_arg0;
127                 argv32 = (int *)fw_arg1;
128         }
129 
130         arcs_cmdline[0] = '\0';
131 
132         for (i = 1; i < argc; i++) {
133                 char *str = (char *)(long)argv32[i];
134                 if (i != 1)
135                         strcat(arcs_cmdline, " ");
136                 if (strchr(str, ' ')) {
137                         strcat(arcs_cmdline, "\"");
138                         strcat(arcs_cmdline, str);
139                         strcat(arcs_cmdline, "\"");
140                 } else
141                         strcat(arcs_cmdline, str);
142         }
143 }
144 
145 static int txx9_ic_disable __initdata;
146 static int txx9_dc_disable __initdata;
147 
148 #if defined(CONFIG_CPU_TX49XX)
149 /* flush all cache on very early stage (before 4k_cache_init) */
150 static void __init early_flush_dcache(void)
151 {
152         unsigned int conf = read_c0_config();
153         unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
154         unsigned int linesz = 32;
155         unsigned long addr, end;
156 
157         end = INDEX_BASE + dc_size / 4;
158         /* 4way, waybit=0 */
159         for (addr = INDEX_BASE; addr < end; addr += linesz) {
160                 cache_op(Index_Writeback_Inv_D, addr | 0);
161                 cache_op(Index_Writeback_Inv_D, addr | 1);
162                 cache_op(Index_Writeback_Inv_D, addr | 2);
163                 cache_op(Index_Writeback_Inv_D, addr | 3);
164         }
165 }
166 
167 static void __init txx9_cache_fixup(void)
168 {
169         unsigned int conf;
170 
171         conf = read_c0_config();
172         /* flush and disable */
173         if (txx9_ic_disable) {
174                 conf |= TX49_CONF_IC;
175                 write_c0_config(conf);
176         }
177         if (txx9_dc_disable) {
178                 early_flush_dcache();
179                 conf |= TX49_CONF_DC;
180                 write_c0_config(conf);
181         }
182 
183         /* enable cache */
184         conf = read_c0_config();
185         if (!txx9_ic_disable)
186                 conf &= ~TX49_CONF_IC;
187         if (!txx9_dc_disable)
188                 conf &= ~TX49_CONF_DC;
189         write_c0_config(conf);
190 
191         if (conf & TX49_CONF_IC)
192                 pr_info("TX49XX I-Cache disabled.\n");
193         if (conf & TX49_CONF_DC)
194                 pr_info("TX49XX D-Cache disabled.\n");
195 }
196 #elif defined(CONFIG_CPU_TX39XX)
197 /* flush all cache on very early stage (before tx39_cache_init) */
198 static void __init early_flush_dcache(void)
199 {
200         unsigned int conf = read_c0_config();
201         unsigned int dc_size = 1 << (10 + ((conf & TX39_CONF_DCS_MASK) >>
202                                            TX39_CONF_DCS_SHIFT));
203         unsigned int linesz = 16;
204         unsigned long addr, end;
205 
206         end = INDEX_BASE + dc_size / 2;
207         /* 2way, 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         }
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 &= ~TX39_CONF_ICE;
222                 write_c0_config(conf);
223         }
224         if (txx9_dc_disable) {
225                 early_flush_dcache();
226                 conf &= ~TX39_CONF_DCE;
227                 write_c0_config(conf);
228         }
229 
230         /* enable cache */
231         conf = read_c0_config();
232         if (!txx9_ic_disable)
233                 conf |= TX39_CONF_ICE;
234         if (!txx9_dc_disable)
235                 conf |= TX39_CONF_DCE;
236         write_c0_config(conf);
237 
238         if (!(conf & TX39_CONF_ICE))
239                 pr_info("TX39XX I-Cache disabled.\n");
240         if (!(conf & TX39_CONF_DCE))
241                 pr_info("TX39XX D-Cache disabled.\n");
242 }
243 #else
244 static inline void txx9_cache_fixup(void)
245 {
246 }
247 #endif
248 
249 static void __init preprocess_cmdline(void)
250 {
251         static char cmdline[COMMAND_LINE_SIZE] __initdata;
252         char *s;
253 
254         strcpy(cmdline, arcs_cmdline);
255         s = cmdline;
256         arcs_cmdline[0] = '\0';
257         while (s && *s) {
258                 char *str = strsep(&s, " ");
259                 if (strncmp(str, "board=", 6) == 0) {
260                         txx9_board_vec = find_board_byname(str + 6);
261                         continue;
262                 } else if (strncmp(str, "masterclk=", 10) == 0) {
263                         unsigned int val;
264                         if (kstrtouint(str + 10, 10, &val) == 0)
265                                 txx9_master_clock = val;
266                         continue;
267                 } else if (strcmp(str, "icdisable") == 0) {
268                         txx9_ic_disable = 1;
269                         continue;
270                 } else if (strcmp(str, "dcdisable") == 0) {
271                         txx9_dc_disable = 1;
272                         continue;
273                 } else if (strcmp(str, "toeoff") == 0) {
274                         txx9_ccfg_toeon = 0;
275                         continue;
276                 } else if (strcmp(str, "toeon") == 0) {
277                         txx9_ccfg_toeon = 1;
278                         continue;
279                 }
280                 if (arcs_cmdline[0])
281                         strcat(arcs_cmdline, " ");
282                 strcat(arcs_cmdline, str);
283         }
284 
285         txx9_cache_fixup();
286 }
287 
288 static void __init select_board(void)
289 {
290         const char *envstr;
291 
292         /* first, determine by "board=" argument in preprocess_cmdline() */
293         if (txx9_board_vec)
294                 return;
295         /* next, determine by "board" envvar */
296         envstr = prom_getenv("board");
297         if (envstr) {
298                 txx9_board_vec = find_board_byname(envstr);
299                 if (txx9_board_vec)
300                         return;
301         }
302 
303         /* select "default" board */
304 #ifdef CONFIG_TOSHIBA_JMR3927
305         txx9_board_vec = &jmr3927_vec;
306 #endif
307 #ifdef CONFIG_CPU_TX49XX
308         switch (TX4938_REV_PCODE()) {
309 #ifdef CONFIG_TOSHIBA_RBTX4927
310         case 0x4927:
311                 txx9_board_vec = &rbtx4927_vec;
312                 break;
313         case 0x4937:
314                 txx9_board_vec = &rbtx4937_vec;
315                 break;
316 #endif
317 #ifdef CONFIG_TOSHIBA_RBTX4938
318         case 0x4938:
319                 txx9_board_vec = &rbtx4938_vec;
320                 break;
321 #endif
322 #ifdef CONFIG_TOSHIBA_RBTX4939
323         case 0x4939:
324                 txx9_board_vec = &rbtx4939_vec;
325                 break;
326 #endif
327         }
328 #endif
329 }
330 
331 void __init prom_init(void)
332 {
333         prom_init_cmdline();
334         preprocess_cmdline();
335         select_board();
336 
337         strcpy(txx9_system_type, txx9_board_vec->system);
338 
339         txx9_board_vec->prom_init();
340 }
341 
342 void __init prom_free_prom_memory(void)
343 {
344         unsigned long saddr = PAGE_SIZE;
345         unsigned long eaddr = __pa_symbol(&_text);
346 
347         if (saddr < eaddr)
348                 free_init_pages("prom memory", saddr, eaddr);
349 }
350 
351 const char *get_system_type(void)
352 {
353         return txx9_system_type;
354 }
355 
356 const char *__init prom_getenv(const char *name)
357 {
358         const s32 *str;
359 
360         if (fw_arg2 < CKSEG0)
361                 return NULL;
362 
363         str = (const s32 *)fw_arg2;
364         /* YAMON style ("name", "value" pairs) */
365         while (str[0] && str[1]) {
366                 if (!strcmp((const char *)(unsigned long)str[0], name))
367                         return (const char *)(unsigned long)str[1];
368                 str += 2;
369         }
370         return NULL;
371 }
372 
373 static void __noreturn txx9_machine_halt(void)
374 {
375         local_irq_disable();
376         clear_c0_status(ST0_IM);
377         while (1) {
378                 if (cpu_wait) {
379                         (*cpu_wait)();
380                         if (cpu_has_counter) {
381                                 /*
382                                  * Clear counter interrupt while it
383                                  * breaks WAIT instruction even if
384                                  * masked.
385                                  */
386                                 write_c0_compare(0);
387                         }
388                 }
389         }
390 }
391 
392 /* Watchdog support */
393 void __init txx9_wdt_init(unsigned long base)
394 {
395         struct resource res = {
396                 .start  = base,
397                 .end    = base + 0x100 - 1,
398                 .flags  = IORESOURCE_MEM,
399         };
400         platform_device_register_simple("txx9wdt", -1, &res, 1);
401 }
402 
403 void txx9_wdt_now(unsigned long base)
404 {
405         struct txx9_tmr_reg __iomem *tmrptr =
406                 ioremap(base, sizeof(struct txx9_tmr_reg));
407         /* disable watch dog timer */
408         __raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
409         __raw_writel(0, &tmrptr->tcr);
410         /* kick watchdog */
411         __raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
412         __raw_writel(1, &tmrptr->cpra); /* immediate */
413         __raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
414                      &tmrptr->tcr);
415 }
416 
417 /* SPI support */
418 void __init txx9_spi_init(int busid, unsigned long base, int irq)
419 {
420         struct resource res[] = {
421                 {
422                         .start  = base,
423                         .end    = base + 0x20 - 1,
424                         .flags  = IORESOURCE_MEM,
425                 }, {
426                         .start  = irq,
427                         .flags  = IORESOURCE_IRQ,
428                 },
429         };
430         platform_device_register_simple("spi_txx9", busid,
431                                         res, ARRAY_SIZE(res));
432 }
433 
434 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
435 {
436         struct platform_device *pdev =
437                 platform_device_alloc("tc35815-mac", id);
438         if (!pdev ||
439             platform_device_add_data(pdev, ethaddr, 6) ||
440             platform_device_add(pdev))
441                 platform_device_put(pdev);
442 }
443 
444 void __init txx9_sio_init(unsigned long baseaddr, int irq,
445                           unsigned int line, unsigned int sclk, int nocts)
446 {
447 #ifdef CONFIG_SERIAL_TXX9
448         struct uart_port req;
449 
450         memset(&req, 0, sizeof(req));
451         req.line = line;
452         req.iotype = UPIO_MEM;
453         req.membase = ioremap(baseaddr, 0x24);
454         req.mapbase = baseaddr;
455         req.irq = irq;
456         if (!nocts)
457                 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
458         if (sclk) {
459                 req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
460                 req.uartclk = sclk;
461         } else
462                 req.uartclk = TXX9_IMCLK;
463         early_serial_txx9_setup(&req);
464 #endif /* CONFIG_SERIAL_TXX9 */
465 }
466 
467 #ifdef CONFIG_EARLY_PRINTK
468 static void null_prom_putchar(char c)
469 {
470 }
471 void (*txx9_prom_putchar)(char c) = null_prom_putchar;
472 
473 void prom_putchar(char c)
474 {
475         txx9_prom_putchar(c);
476 }
477 
478 static void __iomem *early_txx9_sio_port;
479 
480 static void early_txx9_sio_putchar(char c)
481 {
482 #define TXX9_SICISR     0x0c
483 #define TXX9_SITFIFO    0x1c
484 #define TXX9_SICISR_TXALS       0x00000002
485         while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
486                  TXX9_SICISR_TXALS))
487                 ;
488         __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
489 }
490 
491 void __init txx9_sio_putchar_init(unsigned long baseaddr)
492 {
493         early_txx9_sio_port = ioremap(baseaddr, 0x24);
494         txx9_prom_putchar = early_txx9_sio_putchar;
495 }
496 #endif /* CONFIG_EARLY_PRINTK */
497 
498 /* wrappers */
499 void __init plat_mem_setup(void)
500 {
501         ioport_resource.start = 0;
502         ioport_resource.end = ~0UL;     /* no limit */
503         iomem_resource.start = 0;
504         iomem_resource.end = ~0UL;      /* no limit */
505 
506         /* fallback restart/halt routines */
507         _machine_restart = (void (*)(char *))txx9_machine_halt;
508         _machine_halt = txx9_machine_halt;
509         pm_power_off = txx9_machine_halt;
510 
511 #ifdef CONFIG_PCI
512         pcibios_plat_setup = txx9_pcibios_setup;
513 #endif
514         txx9_board_vec->mem_setup();
515 }
516 
517 void __init arch_init_irq(void)
518 {
519         txx9_board_vec->irq_setup();
520 }
521 
522 void __init plat_time_init(void)
523 {
524 #ifdef CONFIG_CPU_TX49XX
525         mips_hpt_frequency = txx9_cpu_clock / 2;
526 #endif
527         txx9_board_vec->time_init();
528 }
529 
530 static void txx9_clk_init(void)
531 {
532         struct clk_hw *hw;
533         int error;
534 
535         hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
536         if (IS_ERR(hw)) {
537                 error = PTR_ERR(hw);
538                 goto fail;
539         }
540 
541         hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
542         error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
543         if (error)
544                 goto fail;
545 
546 #ifdef CONFIG_CPU_TX49XX
547         if (TX4938_REV_PCODE() == 0x4938) {
548                 hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
549                 error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
550                 if (error)
551                         goto fail;
552         }
553 #endif
554 
555         return;
556 
557 fail:
558         pr_err("Failed to register clocks: %d\n", error);
559 }
560 
561 static int __init _txx9_arch_init(void)
562 {
563         txx9_clk_init();
564 
565         if (txx9_board_vec->arch_init)
566                 txx9_board_vec->arch_init();
567         return 0;
568 }
569 arch_initcall(_txx9_arch_init);
570 
571 static int __init _txx9_device_init(void)
572 {
573         if (txx9_board_vec->device_init)
574                 txx9_board_vec->device_init();
575         return 0;
576 }
577 device_initcall(_txx9_device_init);
578 
579 int (*txx9_irq_dispatch)(int pending);
580 asmlinkage void plat_irq_dispatch(void)
581 {
582         int pending = read_c0_status() & read_c0_cause() & ST0_IM;
583         int irq = txx9_irq_dispatch(pending);
584 
585         if (likely(irq >= 0))
586                 do_IRQ(irq);
587         else
588                 spurious_interrupt();
589 }
590 
591 /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
592 #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
593 static unsigned long __swizzle_addr_none(unsigned long port)
594 {
595         return port;
596 }
597 unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
598 EXPORT_SYMBOL(__swizzle_addr_b);
599 #endif
600 
601 #ifdef NEEDS_TXX9_IOSWABW
602 static u16 ioswabw_default(volatile u16 *a, u16 x)
603 {
604         return le16_to_cpu(x);
605 }
606 static u16 __mem_ioswabw_default(volatile u16 *a, u16 x)
607 {
608         return x;
609 }
610 u16 (*ioswabw)(volatile u16 *a, u16 x) = ioswabw_default;
611 EXPORT_SYMBOL(ioswabw);
612 u16 (*__mem_ioswabw)(volatile u16 *a, u16 x) = __mem_ioswabw_default;
613 EXPORT_SYMBOL(__mem_ioswabw);
614 #endif
615 
616 void __init txx9_physmap_flash_init(int no, unsigned long addr,
617                                     unsigned long size,
618                                     const struct physmap_flash_data *pdata)
619 {
620 #if IS_ENABLED(CONFIG_MTD_PHYSMAP)
621         struct resource res = {
622                 .start = addr,
623                 .end = addr + size - 1,
624                 .flags = IORESOURCE_MEM,
625         };
626         struct platform_device *pdev;
627         static struct mtd_partition parts[2];
628         struct physmap_flash_data pdata_part;
629 
630         /* If this area contained boot area, make separate partition */
631         if (pdata->nr_parts == 0 && !pdata->parts &&
632             addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
633             !parts[0].name) {
634                 parts[0].name = "boot";
635                 parts[0].offset = 0x1fc00000 - addr;
636                 parts[0].size = addr + size - 0x1fc00000;
637                 parts[1].name = "user";
638                 parts[1].offset = 0;
639                 parts[1].size = 0x1fc00000 - addr;
640                 pdata_part = *pdata;
641                 pdata_part.nr_parts = ARRAY_SIZE(parts);
642                 pdata_part.parts = parts;
643                 pdata = &pdata_part;
644         }
645 
646         pdev = platform_device_alloc("physmap-flash", no);
647         if (!pdev ||
648             platform_device_add_resources(pdev, &res, 1) ||
649             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
650             platform_device_add(pdev))
651                 platform_device_put(pdev);
652 #endif
653 }
654 
655 void __init txx9_ndfmc_init(unsigned long baseaddr,
656                             const struct txx9ndfmc_platform_data *pdata)
657 {
658 #if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
659         struct resource res = {
660                 .start = baseaddr,
661                 .end = baseaddr + 0x1000 - 1,
662                 .flags = IORESOURCE_MEM,
663         };
664         struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
665 
666         if (!pdev ||
667             platform_device_add_resources(pdev, &res, 1) ||
668             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
669             platform_device_add(pdev))
670                 platform_device_put(pdev);
671 #endif
672 }
673 
674 #if IS_ENABLED(CONFIG_LEDS_GPIO)
675 static DEFINE_SPINLOCK(txx9_iocled_lock);
676 
677 #define TXX9_IOCLED_MAXLEDS 8
678 
679 struct txx9_iocled_data {
680         struct gpio_chip chip;
681         u8 cur_val;
682         void __iomem *mmioaddr;
683         struct gpio_led_platform_data pdata;
684         struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
685         char names[TXX9_IOCLED_MAXLEDS][32];
686 };
687 
688 static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
689 {
690         struct txx9_iocled_data *data = gpiochip_get_data(chip);
691         return !!(data->cur_val & (1 << offset));
692 }
693 
694 static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
695                             int value)
696 {
697         struct txx9_iocled_data *data = gpiochip_get_data(chip);
698         unsigned long flags;
699         spin_lock_irqsave(&txx9_iocled_lock, flags);
700         if (value)
701                 data->cur_val |= 1 << offset;
702         else
703                 data->cur_val &= ~(1 << offset);
704         writeb(data->cur_val, data->mmioaddr);
705         mmiowb();
706         spin_unlock_irqrestore(&txx9_iocled_lock, flags);
707 }
708 
709 static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
710 {
711         return 0;
712 }
713 
714 static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
715                                int value)
716 {
717         txx9_iocled_set(chip, offset, value);
718         return 0;
719 }
720 
721 void __init txx9_iocled_init(unsigned long baseaddr,
722                              int basenum, unsigned int num, int lowactive,
723                              const char *color, char **deftriggers)
724 {
725         struct txx9_iocled_data *iocled;
726         struct platform_device *pdev;
727         int i;
728         static char *default_triggers[] __initdata = {
729                 "heartbeat",
730                 "disk-activity",
731                 "nand-disk",
732                 NULL,
733         };
734 
735         if (!deftriggers)
736                 deftriggers = default_triggers;
737         iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
738         if (!iocled)
739                 return;
740         iocled->mmioaddr = ioremap(baseaddr, 1);
741         if (!iocled->mmioaddr)
742                 goto out_free;
743         iocled->chip.get = txx9_iocled_get;
744         iocled->chip.set = txx9_iocled_set;
745         iocled->chip.direction_input = txx9_iocled_dir_in;
746         iocled->chip.direction_output = txx9_iocled_dir_out;
747         iocled->chip.label = "iocled";
748         iocled->chip.base = basenum;
749         iocled->chip.ngpio = num;
750         if (gpiochip_add_data(&iocled->chip, iocled))
751                 goto out_unmap;
752         if (basenum < 0)
753                 basenum = iocled->chip.base;
754 
755         pdev = platform_device_alloc("leds-gpio", basenum);
756         if (!pdev)
757                 goto out_gpio;
758         iocled->pdata.num_leds = num;
759         iocled->pdata.leds = iocled->leds;
760         for (i = 0; i < num; i++) {
761                 struct gpio_led *led = &iocled->leds[i];
762                 snprintf(iocled->names[i], sizeof(iocled->names[i]),
763                          "iocled:%s:%u", color, i);
764                 led->name = iocled->names[i];
765                 led->gpio = basenum + i;
766                 led->active_low = lowactive;
767                 if (deftriggers && *deftriggers)
768                         led->default_trigger = *deftriggers++;
769         }
770         pdev->dev.platform_data = &iocled->pdata;
771         if (platform_device_add(pdev))
772                 goto out_pdev;
773         return;
774 
775 out_pdev:
776         platform_device_put(pdev);
777 out_gpio:
778         gpiochip_remove(&iocled->chip);
779 out_unmap:
780         iounmap(iocled->mmioaddr);
781 out_free:
782         kfree(iocled);
783 }
784 #else /* CONFIG_LEDS_GPIO */
785 void __init txx9_iocled_init(unsigned long baseaddr,
786                              int basenum, unsigned int num, int lowactive,
787                              const char *color, char **deftriggers)
788 {
789 }
790 #endif /* CONFIG_LEDS_GPIO */
791 
792 void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
793                            const struct txx9dmac_platform_data *pdata)
794 {
795 #if IS_ENABLED(CONFIG_TXX9_DMAC)
796         struct resource res[] = {
797                 {
798                         .start = baseaddr,
799                         .end = baseaddr + 0x800 - 1,
800                         .flags = IORESOURCE_MEM,
801 #ifndef CONFIG_MACH_TX49XX
802                 }, {
803                         .start = irq,
804                         .flags = IORESOURCE_IRQ,
805 #endif
806                 }
807         };
808 #ifdef CONFIG_MACH_TX49XX
809         struct resource chan_res[] = {
810                 {
811                         .flags = IORESOURCE_IRQ,
812                 }
813         };
814 #endif
815         struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
816         struct txx9dmac_chan_platform_data cpdata;
817         int i;
818 
819         if (!pdev ||
820             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
821             platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
822             platform_device_add(pdev)) {
823                 platform_device_put(pdev);
824                 return;
825         }
826         memset(&cpdata, 0, sizeof(cpdata));
827         cpdata.dmac_dev = pdev;
828         for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
829 #ifdef CONFIG_MACH_TX49XX
830                 chan_res[0].start = irq + i;
831 #endif
832                 pdev = platform_device_alloc("txx9dmac-chan",
833                                              id * TXX9_DMA_MAX_NR_CHANNELS + i);
834                 if (!pdev ||
835 #ifdef CONFIG_MACH_TX49XX
836                     platform_device_add_resources(pdev, chan_res,
837                                                   ARRAY_SIZE(chan_res)) ||
838 #endif
839                     platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
840                     platform_device_add(pdev))
841                         platform_device_put(pdev);
842         }
843 #endif
844 }
845 
846 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
847                            unsigned int dmac_id,
848                            unsigned int dma_chan_out,
849                            unsigned int dma_chan_in)
850 {
851 #if IS_ENABLED(CONFIG_SND_SOC_TXX9ACLC)
852         unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
853         struct resource res[] = {
854                 {
855                         .start = baseaddr,
856                         .end = baseaddr + 0x100 - 1,
857                         .flags = IORESOURCE_MEM,
858                 }, {
859                         .start = irq,
860                         .flags = IORESOURCE_IRQ,
861                 }, {
862                         .name = "txx9dmac-chan",
863                         .start = dma_base + dma_chan_out,
864                         .flags = IORESOURCE_DMA,
865                 }, {
866                         .name = "txx9dmac-chan",
867                         .start = dma_base + dma_chan_in,
868                         .flags = IORESOURCE_DMA,
869                 }
870         };
871         struct platform_device *pdev =
872                 platform_device_alloc("txx9aclc-ac97", -1);
873 
874         if (!pdev ||
875             platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
876             platform_device_add(pdev))
877                 platform_device_put(pdev);
878 #endif
879 }
880 
881 static struct bus_type txx9_sramc_subsys = {
882         .name = "txx9_sram",
883         .dev_name = "txx9_sram",
884 };
885 
886 struct txx9_sramc_dev {
887         struct device dev;
888         struct bin_attribute bindata_attr;
889         void __iomem *base;
890 };
891 
892 static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
893                               struct bin_attribute *bin_attr,
894                               char *buf, loff_t pos, size_t size)
895 {
896         struct txx9_sramc_dev *dev = bin_attr->private;
897         size_t ramsize = bin_attr->size;
898 
899         if (pos >= ramsize)
900                 return 0;
901         if (pos + size > ramsize)
902                 size = ramsize - pos;
903         memcpy_fromio(buf, dev->base + pos, size);
904         return size;
905 }
906 
907 static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
908                                struct bin_attribute *bin_attr,
909                                char *buf, loff_t pos, size_t size)
910 {
911         struct txx9_sramc_dev *dev = bin_attr->private;
912         size_t ramsize = bin_attr->size;
913 
914         if (pos >= ramsize)
915                 return 0;
916         if (pos + size > ramsize)
917                 size = ramsize - pos;
918         memcpy_toio(dev->base + pos, buf, size);
919         return size;
920 }
921 
922 static void txx9_device_release(struct device *dev)
923 {
924         struct txx9_sramc_dev *tdev;
925 
926         tdev = container_of(dev, struct txx9_sramc_dev, dev);
927         kfree(tdev);
928 }
929 
930 void __init txx9_sramc_init(struct resource *r)
931 {
932         struct txx9_sramc_dev *dev;
933         size_t size;
934         int err;
935 
936         err = subsys_system_register(&txx9_sramc_subsys, NULL);
937         if (err)
938                 return;
939         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
940         if (!dev)
941                 return;
942         size = resource_size(r);
943         dev->base = ioremap(r->start, size);
944         if (!dev->base) {
945                 kfree(dev);
946                 return;
947         }
948         dev->dev.release = &txx9_device_release;
949         dev->dev.bus = &txx9_sramc_subsys;
950         sysfs_bin_attr_init(&dev->bindata_attr);
951         dev->bindata_attr.attr.name = "bindata";
952         dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
953         dev->bindata_attr.read = txx9_sram_read;
954         dev->bindata_attr.write = txx9_sram_write;
955         dev->bindata_attr.size = size;
956         dev->bindata_attr.private = dev;
957         err = device_register(&dev->dev);
958         if (err)
959                 goto exit_put;
960         err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
961         if (err) {
962                 device_unregister(&dev->dev);
963                 iounmap(dev->base);
964                 kfree(dev);
965         }
966         return;
967 exit_put:
968         put_device(&dev->dev);
969         return;
970 }
971 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp