Merge branch 'fix/pcm-jiffies-check' into fix/asoc
[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.h>
26 #include <linux/of_platform.h>
27 #include <linux/phy.h>
28 #include <linux/phy_fixed.h>
29 #include <linux/spi/spi.h>
30 #include <linux/fsl_devices.h>
31 #include <linux/fs_enet_pd.h>
32 #include <linux/fs_uart_pd.h>
33
34 #include <asm/system.h>
35 #include <asm/atomic.h>
36 #include <asm/io.h>
37 #include <asm/irq.h>
38 #include <asm/time.h>
39 #include <asm/prom.h>
40 #include <sysdev/fsl_soc.h>
41 #include <mm/mmu_decl.h>
42 #include <asm/cpm2.h>
43
44 extern void init_fcc_ioports(struct fs_platform_info*);
45 extern void init_fec_ioports(struct fs_platform_info*);
46 extern void init_smc_ioports(struct fs_uart_platform_info*);
47 static phys_addr_t immrbase = -1;
48
49 phys_addr_t get_immrbase(void)
50 {
51         struct device_node *soc;
52
53         if (immrbase != -1)
54                 return immrbase;
55
56         soc = of_find_node_by_type(NULL, "soc");
57         if (soc) {
58                 int size;
59                 u32 naddr;
60                 const u32 *prop = of_get_property(soc, "#address-cells", &size);
61
62                 if (prop && size == 4)
63                         naddr = *prop;
64                 else
65                         naddr = 2;
66
67                 prop = of_get_property(soc, "ranges", &size);
68                 if (prop)
69                         immrbase = of_translate_address(soc, prop + naddr);
70
71                 of_node_put(soc);
72         }
73
74         return immrbase;
75 }
76
77 EXPORT_SYMBOL(get_immrbase);
78
79 static u32 sysfreq = -1;
80
81 u32 fsl_get_sys_freq(void)
82 {
83         struct device_node *soc;
84         const u32 *prop;
85         int size;
86
87         if (sysfreq != -1)
88                 return sysfreq;
89
90         soc = of_find_node_by_type(NULL, "soc");
91         if (!soc)
92                 return -1;
93
94         prop = of_get_property(soc, "clock-frequency", &size);
95         if (!prop || size != sizeof(*prop) || *prop == 0)
96                 prop = of_get_property(soc, "bus-frequency", &size);
97
98         if (prop && size == sizeof(*prop))
99                 sysfreq = *prop;
100
101         of_node_put(soc);
102         return sysfreq;
103 }
104 EXPORT_SYMBOL(fsl_get_sys_freq);
105
106 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
107
108 static u32 brgfreq = -1;
109
110 u32 get_brgfreq(void)
111 {
112         struct device_node *node;
113         const unsigned int *prop;
114         int size;
115
116         if (brgfreq != -1)
117                 return brgfreq;
118
119         node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
120         if (node) {
121                 prop = of_get_property(node, "clock-frequency", &size);
122                 if (prop && size == 4)
123                         brgfreq = *prop;
124
125                 of_node_put(node);
126                 return brgfreq;
127         }
128
129         /* Legacy device binding -- will go away when no users are left. */
130         node = of_find_node_by_type(NULL, "cpm");
131         if (!node)
132                 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
133         if (!node)
134                 node = of_find_node_by_type(NULL, "qe");
135
136         if (node) {
137                 prop = of_get_property(node, "brg-frequency", &size);
138                 if (prop && size == 4)
139                         brgfreq = *prop;
140
141                 if (brgfreq == -1 || brgfreq == 0) {
142                         prop = of_get_property(node, "bus-frequency", &size);
143                         if (prop && size == 4)
144                                 brgfreq = *prop / 2;
145                 }
146                 of_node_put(node);
147         }
148
149         return brgfreq;
150 }
151
152 EXPORT_SYMBOL(get_brgfreq);
153
154 static u32 fs_baudrate = -1;
155
156 u32 get_baudrate(void)
157 {
158         struct device_node *node;
159
160         if (fs_baudrate != -1)
161                 return fs_baudrate;
162
163         node = of_find_node_by_type(NULL, "serial");
164         if (node) {
165                 int size;
166                 const unsigned int *prop = of_get_property(node,
167                                 "current-speed", &size);
168
169                 if (prop)
170                         fs_baudrate = *prop;
171                 of_node_put(node);
172         }
173
174         return fs_baudrate;
175 }
176
177 EXPORT_SYMBOL(get_baudrate);
178 #endif /* CONFIG_CPM2 */
179
180 #ifdef CONFIG_FIXED_PHY
181 static int __init of_add_fixed_phys(void)
182 {
183         int ret;
184         struct device_node *np;
185         u32 *fixed_link;
186         struct fixed_phy_status status = {};
187
188         for_each_node_by_name(np, "ethernet") {
189                 fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);
190                 if (!fixed_link)
191                         continue;
192
193                 status.link = 1;
194                 status.duplex = fixed_link[1];
195                 status.speed = fixed_link[2];
196                 status.pause = fixed_link[3];
197                 status.asym_pause = fixed_link[4];
198
199                 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
200                 if (ret) {
201                         of_node_put(np);
202                         return ret;
203                 }
204         }
205
206         return 0;
207 }
208 arch_initcall(of_add_fixed_phys);
209 #endif /* CONFIG_FIXED_PHY */
210
211 #ifdef CONFIG_PPC_83xx
212 static int __init mpc83xx_wdt_init(void)
213 {
214         struct resource r;
215         struct device_node *np;
216         struct platform_device *dev;
217         u32 freq = fsl_get_sys_freq();
218         int ret;
219
220         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
221
222         if (!np) {
223                 ret = -ENODEV;
224                 goto nodev;
225         }
226
227         memset(&r, 0, sizeof(r));
228
229         ret = of_address_to_resource(np, 0, &r);
230         if (ret)
231                 goto err;
232
233         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
234         if (IS_ERR(dev)) {
235                 ret = PTR_ERR(dev);
236                 goto err;
237         }
238
239         ret = platform_device_add_data(dev, &freq, sizeof(freq));
240         if (ret)
241                 goto unreg;
242
243         of_node_put(np);
244         return 0;
245
246 unreg:
247         platform_device_unregister(dev);
248 err:
249         of_node_put(np);
250 nodev:
251         return ret;
252 }
253
254 arch_initcall(mpc83xx_wdt_init);
255 #endif
256
257 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
258 {
259         if (!phy_type)
260                 return FSL_USB2_PHY_NONE;
261         if (!strcasecmp(phy_type, "ulpi"))
262                 return FSL_USB2_PHY_ULPI;
263         if (!strcasecmp(phy_type, "utmi"))
264                 return FSL_USB2_PHY_UTMI;
265         if (!strcasecmp(phy_type, "utmi_wide"))
266                 return FSL_USB2_PHY_UTMI_WIDE;
267         if (!strcasecmp(phy_type, "serial"))
268                 return FSL_USB2_PHY_SERIAL;
269
270         return FSL_USB2_PHY_NONE;
271 }
272
273 static int __init fsl_usb_of_init(void)
274 {
275         struct device_node *np;
276         unsigned int i = 0;
277         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
278                 *usb_dev_dr_client = NULL;
279         int ret;
280
281         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
282                 struct resource r[2];
283                 struct fsl_usb2_platform_data usb_data;
284                 const unsigned char *prop = NULL;
285
286                 memset(&r, 0, sizeof(r));
287                 memset(&usb_data, 0, sizeof(usb_data));
288
289                 ret = of_address_to_resource(np, 0, &r[0]);
290                 if (ret)
291                         goto err;
292
293                 of_irq_to_resource(np, 0, &r[1]);
294
295                 usb_dev_mph =
296                     platform_device_register_simple("fsl-ehci", i, r, 2);
297                 if (IS_ERR(usb_dev_mph)) {
298                         ret = PTR_ERR(usb_dev_mph);
299                         goto err;
300                 }
301
302                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
303                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
304
305                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
306
307                 prop = of_get_property(np, "port0", NULL);
308                 if (prop)
309                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
310
311                 prop = of_get_property(np, "port1", NULL);
312                 if (prop)
313                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
314
315                 prop = of_get_property(np, "phy_type", NULL);
316                 usb_data.phy_mode = determine_usb_phy(prop);
317
318                 ret =
319                     platform_device_add_data(usb_dev_mph, &usb_data,
320                                              sizeof(struct
321                                                     fsl_usb2_platform_data));
322                 if (ret)
323                         goto unreg_mph;
324                 i++;
325         }
326
327         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
328                 struct resource r[2];
329                 struct fsl_usb2_platform_data usb_data;
330                 const unsigned char *prop = NULL;
331
332                 if (!of_device_is_available(np))
333                         continue;
334
335                 memset(&r, 0, sizeof(r));
336                 memset(&usb_data, 0, sizeof(usb_data));
337
338                 ret = of_address_to_resource(np, 0, &r[0]);
339                 if (ret)
340                         goto unreg_mph;
341
342                 of_irq_to_resource(np, 0, &r[1]);
343
344                 prop = of_get_property(np, "dr_mode", NULL);
345
346                 if (!prop || !strcmp(prop, "host")) {
347                         usb_data.operating_mode = FSL_USB2_DR_HOST;
348                         usb_dev_dr_host = platform_device_register_simple(
349                                         "fsl-ehci", i, r, 2);
350                         if (IS_ERR(usb_dev_dr_host)) {
351                                 ret = PTR_ERR(usb_dev_dr_host);
352                                 goto err;
353                         }
354                 } else if (prop && !strcmp(prop, "peripheral")) {
355                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
356                         usb_dev_dr_client = platform_device_register_simple(
357                                         "fsl-usb2-udc", i, r, 2);
358                         if (IS_ERR(usb_dev_dr_client)) {
359                                 ret = PTR_ERR(usb_dev_dr_client);
360                                 goto err;
361                         }
362                 } else if (prop && !strcmp(prop, "otg")) {
363                         usb_data.operating_mode = FSL_USB2_DR_OTG;
364                         usb_dev_dr_host = platform_device_register_simple(
365                                         "fsl-ehci", i, r, 2);
366                         if (IS_ERR(usb_dev_dr_host)) {
367                                 ret = PTR_ERR(usb_dev_dr_host);
368                                 goto err;
369                         }
370                         usb_dev_dr_client = platform_device_register_simple(
371                                         "fsl-usb2-udc", i, r, 2);
372                         if (IS_ERR(usb_dev_dr_client)) {
373                                 ret = PTR_ERR(usb_dev_dr_client);
374                                 goto err;
375                         }
376                 } else {
377                         ret = -EINVAL;
378                         goto err;
379                 }
380
381                 prop = of_get_property(np, "phy_type", NULL);
382                 usb_data.phy_mode = determine_usb_phy(prop);
383
384                 if (usb_dev_dr_host) {
385                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
386                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
387                                 dev.coherent_dma_mask;
388                         if ((ret = platform_device_add_data(usb_dev_dr_host,
389                                                 &usb_data, sizeof(struct
390                                                 fsl_usb2_platform_data))))
391                                 goto unreg_dr;
392                 }
393                 if (usb_dev_dr_client) {
394                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
395                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
396                                 dev.coherent_dma_mask;
397                         if ((ret = platform_device_add_data(usb_dev_dr_client,
398                                                 &usb_data, sizeof(struct
399                                                 fsl_usb2_platform_data))))
400                                 goto unreg_dr;
401                 }
402                 i++;
403         }
404         return 0;
405
406 unreg_dr:
407         if (usb_dev_dr_host)
408                 platform_device_unregister(usb_dev_dr_host);
409         if (usb_dev_dr_client)
410                 platform_device_unregister(usb_dev_dr_client);
411 unreg_mph:
412         if (usb_dev_mph)
413                 platform_device_unregister(usb_dev_mph);
414 err:
415         return ret;
416 }
417
418 arch_initcall(fsl_usb_of_init);
419
420 #if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
421 static __be32 __iomem *rstcr;
422
423 static int __init setup_rstcr(void)
424 {
425         struct device_node *np;
426         np = of_find_node_by_name(NULL, "global-utilities");
427         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
428                 const u32 *prop = of_get_property(np, "reg", NULL);
429                 if (prop) {
430                         /* map reset control register
431                          * 0xE00B0 is offset of reset control register
432                          */
433                         rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff);
434                         if (!rstcr)
435                                 printk (KERN_EMERG "Error: reset control "
436                                                 "register not mapped!\n");
437                 }
438         } else
439                 printk (KERN_INFO "rstcr compatible register does not exist!\n");
440         if (np)
441                 of_node_put(np);
442         return 0;
443 }
444
445 arch_initcall(setup_rstcr);
446
447 void fsl_rstcr_restart(char *cmd)
448 {
449         local_irq_disable();
450         if (rstcr)
451                 /* set reset control register */
452                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
453
454         while (1) ;
455 }
456 #endif
457
458 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
459 struct platform_diu_data_ops diu_ops;
460 EXPORT_SYMBOL(diu_ops);
461 #endif