Merge branch 'for-linus' of git://neil.brown.name/md
[linux-2.6] / arch / powerpc / sysdev / fsl_soc.c
1 /*
2  * FSL SoC setup code
3  *
4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
5  *
6  * 2006 (c) MontaVista Software, Inc.
7  * Vitaly Bordug <vbordug@ru.mvista.com>
8  *
9  * This program is free software; you can redistribute  it and/or modify it
10  * under  the terms of  the GNU General  Public License as published by the
11  * Free Software Foundation;  either version 2 of the  License, or (at your
12  * option) any later version.
13  */
14
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/major.h>
20 #include <linux/delay.h>
21 #include <linux/irq.h>
22 #include <linux/module.h>
23 #include <linux/device.h>
24 #include <linux/platform_device.h>
25 #include <linux/of_platform.h>
26 #include <linux/phy.h>
27 #include <linux/phy_fixed.h>
28 #include <linux/spi/spi.h>
29 #include <linux/fsl_devices.h>
30 #include <linux/fs_enet_pd.h>
31 #include <linux/fs_uart_pd.h>
32
33 #include <asm/system.h>
34 #include <asm/atomic.h>
35 #include <asm/io.h>
36 #include <asm/irq.h>
37 #include <asm/time.h>
38 #include <asm/prom.h>
39 #include <sysdev/fsl_soc.h>
40 #include <mm/mmu_decl.h>
41 #include <asm/cpm2.h>
42
43 extern void init_fcc_ioports(struct fs_platform_info*);
44 extern void init_fec_ioports(struct fs_platform_info*);
45 extern void init_smc_ioports(struct fs_uart_platform_info*);
46 static phys_addr_t immrbase = -1;
47
48 phys_addr_t get_immrbase(void)
49 {
50         struct device_node *soc;
51
52         if (immrbase != -1)
53                 return immrbase;
54
55         soc = of_find_node_by_type(NULL, "soc");
56         if (soc) {
57                 int size;
58                 u32 naddr;
59                 const u32 *prop = of_get_property(soc, "#address-cells", &size);
60
61                 if (prop && size == 4)
62                         naddr = *prop;
63                 else
64                         naddr = 2;
65
66                 prop = of_get_property(soc, "ranges", &size);
67                 if (prop)
68                         immrbase = of_translate_address(soc, prop + naddr);
69
70                 of_node_put(soc);
71         }
72
73         return immrbase;
74 }
75
76 EXPORT_SYMBOL(get_immrbase);
77
78 static u32 sysfreq = -1;
79
80 u32 fsl_get_sys_freq(void)
81 {
82         struct device_node *soc;
83         const u32 *prop;
84         int size;
85
86         if (sysfreq != -1)
87                 return sysfreq;
88
89         soc = of_find_node_by_type(NULL, "soc");
90         if (!soc)
91                 return -1;
92
93         prop = of_get_property(soc, "clock-frequency", &size);
94         if (!prop || size != sizeof(*prop) || *prop == 0)
95                 prop = of_get_property(soc, "bus-frequency", &size);
96
97         if (prop && size == sizeof(*prop))
98                 sysfreq = *prop;
99
100         of_node_put(soc);
101         return sysfreq;
102 }
103 EXPORT_SYMBOL(fsl_get_sys_freq);
104
105 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
106
107 static u32 brgfreq = -1;
108
109 u32 get_brgfreq(void)
110 {
111         struct device_node *node;
112         const unsigned int *prop;
113         int size;
114
115         if (brgfreq != -1)
116                 return brgfreq;
117
118         node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
119         if (node) {
120                 prop = of_get_property(node, "clock-frequency", &size);
121                 if (prop && size == 4)
122                         brgfreq = *prop;
123
124                 of_node_put(node);
125                 return brgfreq;
126         }
127
128         /* Legacy device binding -- will go away when no users are left. */
129         node = of_find_node_by_type(NULL, "cpm");
130         if (!node)
131                 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
132         if (!node)
133                 node = of_find_node_by_type(NULL, "qe");
134
135         if (node) {
136                 prop = of_get_property(node, "brg-frequency", &size);
137                 if (prop && size == 4)
138                         brgfreq = *prop;
139
140                 if (brgfreq == -1 || brgfreq == 0) {
141                         prop = of_get_property(node, "bus-frequency", &size);
142                         if (prop && size == 4)
143                                 brgfreq = *prop / 2;
144                 }
145                 of_node_put(node);
146         }
147
148         return brgfreq;
149 }
150
151 EXPORT_SYMBOL(get_brgfreq);
152
153 static u32 fs_baudrate = -1;
154
155 u32 get_baudrate(void)
156 {
157         struct device_node *node;
158
159         if (fs_baudrate != -1)
160                 return fs_baudrate;
161
162         node = of_find_node_by_type(NULL, "serial");
163         if (node) {
164                 int size;
165                 const unsigned int *prop = of_get_property(node,
166                                 "current-speed", &size);
167
168                 if (prop)
169                         fs_baudrate = *prop;
170                 of_node_put(node);
171         }
172
173         return fs_baudrate;
174 }
175
176 EXPORT_SYMBOL(get_baudrate);
177 #endif /* CONFIG_CPM2 */
178
179 #ifdef CONFIG_FIXED_PHY
180 static int __init of_add_fixed_phys(void)
181 {
182         int ret;
183         struct device_node *np;
184         u32 *fixed_link;
185         struct fixed_phy_status status = {};
186
187         for_each_node_by_name(np, "ethernet") {
188                 fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);
189                 if (!fixed_link)
190                         continue;
191
192                 status.link = 1;
193                 status.duplex = fixed_link[1];
194                 status.speed = fixed_link[2];
195                 status.pause = fixed_link[3];
196                 status.asym_pause = fixed_link[4];
197
198                 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
199                 if (ret) {
200                         of_node_put(np);
201                         return ret;
202                 }
203         }
204
205         return 0;
206 }
207 arch_initcall(of_add_fixed_phys);
208 #endif /* CONFIG_FIXED_PHY */
209
210 static int gfar_mdio_of_init_one(struct device_node *np)
211 {
212         int k;
213         struct device_node *child = NULL;
214         struct gianfar_mdio_data mdio_data;
215         struct platform_device *mdio_dev;
216         struct resource res;
217         int ret;
218
219         memset(&res, 0, sizeof(res));
220         memset(&mdio_data, 0, sizeof(mdio_data));
221
222         ret = of_address_to_resource(np, 0, &res);
223         if (ret)
224                 return ret;
225
226         mdio_dev = platform_device_register_simple("fsl-gianfar_mdio",
227                         res.start&0xfffff, &res, 1);
228         if (IS_ERR(mdio_dev))
229                 return PTR_ERR(mdio_dev);
230
231         for (k = 0; k < 32; k++)
232                 mdio_data.irq[k] = PHY_POLL;
233
234         while ((child = of_get_next_child(np, child)) != NULL) {
235                 int irq = irq_of_parse_and_map(child, 0);
236                 if (irq != NO_IRQ) {
237                         const u32 *id = of_get_property(child, "reg", NULL);
238                         mdio_data.irq[*id] = irq;
239                 }
240         }
241
242         ret = platform_device_add_data(mdio_dev, &mdio_data,
243                                 sizeof(struct gianfar_mdio_data));
244         if (ret)
245                 platform_device_unregister(mdio_dev);
246
247         return ret;
248 }
249
250 static int __init gfar_mdio_of_init(void)
251 {
252         struct device_node *np = NULL;
253
254         for_each_compatible_node(np, NULL, "fsl,gianfar-mdio")
255                 gfar_mdio_of_init_one(np);
256
257         /* try the deprecated version */
258         for_each_compatible_node(np, "mdio", "gianfar");
259                 gfar_mdio_of_init_one(np);
260
261         return 0;
262 }
263
264 arch_initcall(gfar_mdio_of_init);
265
266 static const char *gfar_tx_intr = "tx";
267 static const char *gfar_rx_intr = "rx";
268 static const char *gfar_err_intr = "error";
269
270 static int __init gfar_of_init(void)
271 {
272         struct device_node *np;
273         unsigned int i;
274         struct platform_device *gfar_dev;
275         struct resource res;
276         int ret;
277
278         for (np = NULL, i = 0;
279              (np = of_find_compatible_node(np, "network", "gianfar")) != NULL;
280              i++) {
281                 struct resource r[4];
282                 struct device_node *phy, *mdio;
283                 struct gianfar_platform_data gfar_data;
284                 const unsigned int *id;
285                 const char *model;
286                 const char *ctype;
287                 const void *mac_addr;
288                 const phandle *ph;
289                 int n_res = 2;
290
291                 if (!of_device_is_available(np))
292                         continue;
293
294                 memset(r, 0, sizeof(r));
295                 memset(&gfar_data, 0, sizeof(gfar_data));
296
297                 ret = of_address_to_resource(np, 0, &r[0]);
298                 if (ret)
299                         goto err;
300
301                 of_irq_to_resource(np, 0, &r[1]);
302
303                 model = of_get_property(np, "model", NULL);
304
305                 /* If we aren't the FEC we have multiple interrupts */
306                 if (model && strcasecmp(model, "FEC")) {
307                         r[1].name = gfar_tx_intr;
308
309                         r[2].name = gfar_rx_intr;
310                         of_irq_to_resource(np, 1, &r[2]);
311
312                         r[3].name = gfar_err_intr;
313                         of_irq_to_resource(np, 2, &r[3]);
314
315                         n_res += 2;
316                 }
317
318                 gfar_dev =
319                     platform_device_register_simple("fsl-gianfar", i, &r[0],
320                                                     n_res);
321
322                 if (IS_ERR(gfar_dev)) {
323                         ret = PTR_ERR(gfar_dev);
324                         goto err;
325                 }
326
327                 mac_addr = of_get_mac_address(np);
328                 if (mac_addr)
329                         memcpy(gfar_data.mac_addr, mac_addr, 6);
330
331                 if (model && !strcasecmp(model, "TSEC"))
332                         gfar_data.device_flags =
333                             FSL_GIANFAR_DEV_HAS_GIGABIT |
334                             FSL_GIANFAR_DEV_HAS_COALESCE |
335                             FSL_GIANFAR_DEV_HAS_RMON |
336                             FSL_GIANFAR_DEV_HAS_MULTI_INTR;
337                 if (model && !strcasecmp(model, "eTSEC"))
338                         gfar_data.device_flags =
339                             FSL_GIANFAR_DEV_HAS_GIGABIT |
340                             FSL_GIANFAR_DEV_HAS_COALESCE |
341                             FSL_GIANFAR_DEV_HAS_RMON |
342                             FSL_GIANFAR_DEV_HAS_MULTI_INTR |
343                             FSL_GIANFAR_DEV_HAS_CSUM |
344                             FSL_GIANFAR_DEV_HAS_VLAN |
345                             FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
346
347                 ctype = of_get_property(np, "phy-connection-type", NULL);
348
349                 /* We only care about rgmii-id.  The rest are autodetected */
350                 if (ctype && !strcmp(ctype, "rgmii-id"))
351                         gfar_data.interface = PHY_INTERFACE_MODE_RGMII_ID;
352                 else
353                         gfar_data.interface = PHY_INTERFACE_MODE_MII;
354
355                 if (of_get_property(np, "fsl,magic-packet", NULL))
356                         gfar_data.device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
357
358                 ph = of_get_property(np, "phy-handle", NULL);
359                 if (ph == NULL) {
360                         u32 *fixed_link;
361
362                         fixed_link = (u32 *)of_get_property(np, "fixed-link",
363                                                            NULL);
364                         if (!fixed_link) {
365                                 ret = -ENODEV;
366                                 goto unreg;
367                         }
368
369                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "0");
370                         gfar_data.phy_id = fixed_link[0];
371                 } else {
372                         phy = of_find_node_by_phandle(*ph);
373
374                         if (phy == NULL) {
375                                 ret = -ENODEV;
376                                 goto unreg;
377                         }
378
379                         mdio = of_get_parent(phy);
380
381                         id = of_get_property(phy, "reg", NULL);
382                         ret = of_address_to_resource(mdio, 0, &res);
383                         if (ret) {
384                                 of_node_put(phy);
385                                 of_node_put(mdio);
386                                 goto unreg;
387                         }
388
389                         gfar_data.phy_id = *id;
390                         snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "%llx",
391                                  (unsigned long long)res.start&0xfffff);
392
393                         of_node_put(phy);
394                         of_node_put(mdio);
395                 }
396
397                 ret =
398                     platform_device_add_data(gfar_dev, &gfar_data,
399                                              sizeof(struct
400                                                     gianfar_platform_data));
401                 if (ret)
402                         goto unreg;
403         }
404
405         return 0;
406
407 unreg:
408         platform_device_unregister(gfar_dev);
409 err:
410         return ret;
411 }
412
413 arch_initcall(gfar_of_init);
414
415 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
416 {
417         if (!phy_type)
418                 return FSL_USB2_PHY_NONE;
419         if (!strcasecmp(phy_type, "ulpi"))
420                 return FSL_USB2_PHY_ULPI;
421         if (!strcasecmp(phy_type, "utmi"))
422                 return FSL_USB2_PHY_UTMI;
423         if (!strcasecmp(phy_type, "utmi_wide"))
424                 return FSL_USB2_PHY_UTMI_WIDE;
425         if (!strcasecmp(phy_type, "serial"))
426                 return FSL_USB2_PHY_SERIAL;
427
428         return FSL_USB2_PHY_NONE;
429 }
430
431 static int __init fsl_usb_of_init(void)
432 {
433         struct device_node *np;
434         unsigned int i = 0;
435         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
436                 *usb_dev_dr_client = NULL;
437         int ret;
438
439         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
440                 struct resource r[2];
441                 struct fsl_usb2_platform_data usb_data;
442                 const unsigned char *prop = NULL;
443
444                 memset(&r, 0, sizeof(r));
445                 memset(&usb_data, 0, sizeof(usb_data));
446
447                 ret = of_address_to_resource(np, 0, &r[0]);
448                 if (ret)
449                         goto err;
450
451                 of_irq_to_resource(np, 0, &r[1]);
452
453                 usb_dev_mph =
454                     platform_device_register_simple("fsl-ehci", i, r, 2);
455                 if (IS_ERR(usb_dev_mph)) {
456                         ret = PTR_ERR(usb_dev_mph);
457                         goto err;
458                 }
459
460                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
461                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
462
463                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
464
465                 prop = of_get_property(np, "port0", NULL);
466                 if (prop)
467                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
468
469                 prop = of_get_property(np, "port1", NULL);
470                 if (prop)
471                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
472
473                 prop = of_get_property(np, "phy_type", NULL);
474                 usb_data.phy_mode = determine_usb_phy(prop);
475
476                 ret =
477                     platform_device_add_data(usb_dev_mph, &usb_data,
478                                              sizeof(struct
479                                                     fsl_usb2_platform_data));
480                 if (ret)
481                         goto unreg_mph;
482                 i++;
483         }
484
485         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
486                 struct resource r[2];
487                 struct fsl_usb2_platform_data usb_data;
488                 const unsigned char *prop = NULL;
489
490                 memset(&r, 0, sizeof(r));
491                 memset(&usb_data, 0, sizeof(usb_data));
492
493                 ret = of_address_to_resource(np, 0, &r[0]);
494                 if (ret)
495                         goto unreg_mph;
496
497                 of_irq_to_resource(np, 0, &r[1]);
498
499                 prop = of_get_property(np, "dr_mode", NULL);
500
501                 if (!prop || !strcmp(prop, "host")) {
502                         usb_data.operating_mode = FSL_USB2_DR_HOST;
503                         usb_dev_dr_host = platform_device_register_simple(
504                                         "fsl-ehci", i, r, 2);
505                         if (IS_ERR(usb_dev_dr_host)) {
506                                 ret = PTR_ERR(usb_dev_dr_host);
507                                 goto err;
508                         }
509                 } else if (prop && !strcmp(prop, "peripheral")) {
510                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
511                         usb_dev_dr_client = platform_device_register_simple(
512                                         "fsl-usb2-udc", i, r, 2);
513                         if (IS_ERR(usb_dev_dr_client)) {
514                                 ret = PTR_ERR(usb_dev_dr_client);
515                                 goto err;
516                         }
517                 } else if (prop && !strcmp(prop, "otg")) {
518                         usb_data.operating_mode = FSL_USB2_DR_OTG;
519                         usb_dev_dr_host = platform_device_register_simple(
520                                         "fsl-ehci", i, r, 2);
521                         if (IS_ERR(usb_dev_dr_host)) {
522                                 ret = PTR_ERR(usb_dev_dr_host);
523                                 goto err;
524                         }
525                         usb_dev_dr_client = platform_device_register_simple(
526                                         "fsl-usb2-udc", i, r, 2);
527                         if (IS_ERR(usb_dev_dr_client)) {
528                                 ret = PTR_ERR(usb_dev_dr_client);
529                                 goto err;
530                         }
531                 } else {
532                         ret = -EINVAL;
533                         goto err;
534                 }
535
536                 prop = of_get_property(np, "phy_type", NULL);
537                 usb_data.phy_mode = determine_usb_phy(prop);
538
539                 if (usb_dev_dr_host) {
540                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
541                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
542                                 dev.coherent_dma_mask;
543                         if ((ret = platform_device_add_data(usb_dev_dr_host,
544                                                 &usb_data, sizeof(struct
545                                                 fsl_usb2_platform_data))))
546                                 goto unreg_dr;
547                 }
548                 if (usb_dev_dr_client) {
549                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
550                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
551                                 dev.coherent_dma_mask;
552                         if ((ret = platform_device_add_data(usb_dev_dr_client,
553                                                 &usb_data, sizeof(struct
554                                                 fsl_usb2_platform_data))))
555                                 goto unreg_dr;
556                 }
557                 i++;
558         }
559         return 0;
560
561 unreg_dr:
562         if (usb_dev_dr_host)
563                 platform_device_unregister(usb_dev_dr_host);
564         if (usb_dev_dr_client)
565                 platform_device_unregister(usb_dev_dr_client);
566 unreg_mph:
567         if (usb_dev_mph)
568                 platform_device_unregister(usb_dev_mph);
569 err:
570         return ret;
571 }
572
573 arch_initcall(fsl_usb_of_init);
574
575 static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
576                                    struct spi_board_info *board_infos,
577                                    unsigned int num_board_infos,
578                                    void (*activate_cs)(u8 cs, u8 polarity),
579                                    void (*deactivate_cs)(u8 cs, u8 polarity))
580 {
581         struct device_node *np;
582         unsigned int i = 0;
583
584         for_each_compatible_node(np, type, compatible) {
585                 int ret;
586                 unsigned int j;
587                 const void *prop;
588                 struct resource res[2];
589                 struct platform_device *pdev;
590                 struct fsl_spi_platform_data pdata = {
591                         .activate_cs = activate_cs,
592                         .deactivate_cs = deactivate_cs,
593                 };
594
595                 memset(res, 0, sizeof(res));
596
597                 pdata.sysclk = sysclk;
598
599                 prop = of_get_property(np, "reg", NULL);
600                 if (!prop)
601                         goto err;
602                 pdata.bus_num = *(u32 *)prop;
603
604                 prop = of_get_property(np, "cell-index", NULL);
605                 if (prop)
606                         i = *(u32 *)prop;
607
608                 prop = of_get_property(np, "mode", NULL);
609                 if (prop && !strcmp(prop, "cpu-qe"))
610                         pdata.qe_mode = 1;
611
612                 for (j = 0; j < num_board_infos; j++) {
613                         if (board_infos[j].bus_num == pdata.bus_num)
614                                 pdata.max_chipselect++;
615                 }
616
617                 if (!pdata.max_chipselect)
618                         continue;
619
620                 ret = of_address_to_resource(np, 0, &res[0]);
621                 if (ret)
622                         goto err;
623
624                 ret = of_irq_to_resource(np, 0, &res[1]);
625                 if (ret == NO_IRQ)
626                         goto err;
627
628                 pdev = platform_device_alloc("mpc83xx_spi", i);
629                 if (!pdev)
630                         goto err;
631
632                 ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
633                 if (ret)
634                         goto unreg;
635
636                 ret = platform_device_add_resources(pdev, res,
637                                                     ARRAY_SIZE(res));
638                 if (ret)
639                         goto unreg;
640
641                 ret = platform_device_add(pdev);
642                 if (ret)
643                         goto unreg;
644
645                 goto next;
646 unreg:
647                 platform_device_del(pdev);
648 err:
649                 pr_err("%s: registration failed\n", np->full_name);
650 next:
651                 i++;
652         }
653
654         return i;
655 }
656
657 int __init fsl_spi_init(struct spi_board_info *board_infos,
658                         unsigned int num_board_infos,
659                         void (*activate_cs)(u8 cs, u8 polarity),
660                         void (*deactivate_cs)(u8 cs, u8 polarity))
661 {
662         u32 sysclk = -1;
663         int ret;
664
665 #ifdef CONFIG_QUICC_ENGINE
666         /* SPI controller is either clocked from QE or SoC clock */
667         sysclk = get_brgfreq();
668 #endif
669         if (sysclk == -1) {
670                 sysclk = fsl_get_sys_freq();
671                 if (sysclk == -1)
672                         return -ENODEV;
673         }
674
675         ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
676                                num_board_infos, activate_cs, deactivate_cs);
677         if (!ret)
678                 of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
679                                  num_board_infos, activate_cs, deactivate_cs);
680
681         return spi_register_board_info(board_infos, num_board_infos);
682 }
683
684 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
685 static __be32 __iomem *rstcr;
686
687 static int __init setup_rstcr(void)
688 {
689         struct device_node *np;
690         np = of_find_node_by_name(NULL, "global-utilities");
691         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
692                 const u32 *prop = of_get_property(np, "reg", NULL);
693                 if (prop) {
694                         /* map reset control register
695                          * 0xE00B0 is offset of reset control register
696                          */
697                         rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
698                         if (!rstcr)
699                                 printk (KERN_EMERG "Error: reset control "
700                                                 "register not mapped!\n");
701                 }
702         } else
703                 printk (KERN_INFO "rstcr compatible register does not exist!\n");
704         if (np)
705                 of_node_put(np);
706         return 0;
707 }
708
709 arch_initcall(setup_rstcr);
710
711 void fsl_rstcr_restart(char *cmd)
712 {
713         local_irq_disable();
714         if (rstcr)
715                 /* set reset control register */
716                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
717
718         while (1) ;
719 }
720 #endif
721
722 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
723 struct platform_diu_data_ops diu_ops;
724 EXPORT_SYMBOL(diu_ops);
725 #endif