powerpc/85xx: Kconfig cleanup
[linux-3.10.git] / 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 <asm/machdep.h>
41 #include <sysdev/fsl_soc.h>
42 #include <mm/mmu_decl.h>
43 #include <asm/cpm2.h>
44
45 extern void init_fcc_ioports(struct fs_platform_info*);
46 extern void init_fec_ioports(struct fs_platform_info*);
47 extern void init_smc_ioports(struct fs_uart_platform_info*);
48 static phys_addr_t immrbase = -1;
49
50 phys_addr_t get_immrbase(void)
51 {
52         struct device_node *soc;
53
54         if (immrbase != -1)
55                 return immrbase;
56
57         soc = of_find_node_by_type(NULL, "soc");
58         if (soc) {
59                 int size;
60                 u32 naddr;
61                 const u32 *prop = of_get_property(soc, "#address-cells", &size);
62
63                 if (prop && size == 4)
64                         naddr = *prop;
65                 else
66                         naddr = 2;
67
68                 prop = of_get_property(soc, "ranges", &size);
69                 if (prop)
70                         immrbase = of_translate_address(soc, prop + naddr);
71
72                 of_node_put(soc);
73         }
74
75         return immrbase;
76 }
77
78 EXPORT_SYMBOL(get_immrbase);
79
80 static u32 sysfreq = -1;
81
82 u32 fsl_get_sys_freq(void)
83 {
84         struct device_node *soc;
85         const u32 *prop;
86         int size;
87
88         if (sysfreq != -1)
89                 return sysfreq;
90
91         soc = of_find_node_by_type(NULL, "soc");
92         if (!soc)
93                 return -1;
94
95         prop = of_get_property(soc, "clock-frequency", &size);
96         if (!prop || size != sizeof(*prop) || *prop == 0)
97                 prop = of_get_property(soc, "bus-frequency", &size);
98
99         if (prop && size == sizeof(*prop))
100                 sysfreq = *prop;
101
102         of_node_put(soc);
103         return sysfreq;
104 }
105 EXPORT_SYMBOL(fsl_get_sys_freq);
106
107 #if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
108
109 static u32 brgfreq = -1;
110
111 u32 get_brgfreq(void)
112 {
113         struct device_node *node;
114         const unsigned int *prop;
115         int size;
116
117         if (brgfreq != -1)
118                 return brgfreq;
119
120         node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
121         if (node) {
122                 prop = of_get_property(node, "clock-frequency", &size);
123                 if (prop && size == 4)
124                         brgfreq = *prop;
125
126                 of_node_put(node);
127                 return brgfreq;
128         }
129
130         /* Legacy device binding -- will go away when no users are left. */
131         node = of_find_node_by_type(NULL, "cpm");
132         if (!node)
133                 node = of_find_compatible_node(NULL, NULL, "fsl,qe");
134         if (!node)
135                 node = of_find_node_by_type(NULL, "qe");
136
137         if (node) {
138                 prop = of_get_property(node, "brg-frequency", &size);
139                 if (prop && size == 4)
140                         brgfreq = *prop;
141
142                 if (brgfreq == -1 || brgfreq == 0) {
143                         prop = of_get_property(node, "bus-frequency", &size);
144                         if (prop && size == 4)
145                                 brgfreq = *prop / 2;
146                 }
147                 of_node_put(node);
148         }
149
150         return brgfreq;
151 }
152
153 EXPORT_SYMBOL(get_brgfreq);
154
155 static u32 fs_baudrate = -1;
156
157 u32 get_baudrate(void)
158 {
159         struct device_node *node;
160
161         if (fs_baudrate != -1)
162                 return fs_baudrate;
163
164         node = of_find_node_by_type(NULL, "serial");
165         if (node) {
166                 int size;
167                 const unsigned int *prop = of_get_property(node,
168                                 "current-speed", &size);
169
170                 if (prop)
171                         fs_baudrate = *prop;
172                 of_node_put(node);
173         }
174
175         return fs_baudrate;
176 }
177
178 EXPORT_SYMBOL(get_baudrate);
179 #endif /* CONFIG_CPM2 */
180
181 #ifdef CONFIG_FIXED_PHY
182 static int __init of_add_fixed_phys(void)
183 {
184         int ret;
185         struct device_node *np;
186         u32 *fixed_link;
187         struct fixed_phy_status status = {};
188
189         for_each_node_by_name(np, "ethernet") {
190                 fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);
191                 if (!fixed_link)
192                         continue;
193
194                 status.link = 1;
195                 status.duplex = fixed_link[1];
196                 status.speed = fixed_link[2];
197                 status.pause = fixed_link[3];
198                 status.asym_pause = fixed_link[4];
199
200                 ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
201                 if (ret) {
202                         of_node_put(np);
203                         return ret;
204                 }
205         }
206
207         return 0;
208 }
209 arch_initcall(of_add_fixed_phys);
210 #endif /* CONFIG_FIXED_PHY */
211
212 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
213 {
214         if (!phy_type)
215                 return FSL_USB2_PHY_NONE;
216         if (!strcasecmp(phy_type, "ulpi"))
217                 return FSL_USB2_PHY_ULPI;
218         if (!strcasecmp(phy_type, "utmi"))
219                 return FSL_USB2_PHY_UTMI;
220         if (!strcasecmp(phy_type, "utmi_wide"))
221                 return FSL_USB2_PHY_UTMI_WIDE;
222         if (!strcasecmp(phy_type, "serial"))
223                 return FSL_USB2_PHY_SERIAL;
224
225         return FSL_USB2_PHY_NONE;
226 }
227
228 static int __init fsl_usb_of_init(void)
229 {
230         struct device_node *np;
231         unsigned int i = 0;
232         struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
233                 *usb_dev_dr_client = NULL;
234         int ret;
235
236         for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
237                 struct resource r[2];
238                 struct fsl_usb2_platform_data usb_data;
239                 const unsigned char *prop = NULL;
240
241                 memset(&r, 0, sizeof(r));
242                 memset(&usb_data, 0, sizeof(usb_data));
243
244                 ret = of_address_to_resource(np, 0, &r[0]);
245                 if (ret)
246                         goto err;
247
248                 of_irq_to_resource(np, 0, &r[1]);
249
250                 usb_dev_mph =
251                     platform_device_register_simple("fsl-ehci", i, r, 2);
252                 if (IS_ERR(usb_dev_mph)) {
253                         ret = PTR_ERR(usb_dev_mph);
254                         goto err;
255                 }
256
257                 usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
258                 usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
259
260                 usb_data.operating_mode = FSL_USB2_MPH_HOST;
261
262                 prop = of_get_property(np, "port0", NULL);
263                 if (prop)
264                         usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
265
266                 prop = of_get_property(np, "port1", NULL);
267                 if (prop)
268                         usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
269
270                 prop = of_get_property(np, "phy_type", NULL);
271                 usb_data.phy_mode = determine_usb_phy(prop);
272
273                 ret =
274                     platform_device_add_data(usb_dev_mph, &usb_data,
275                                              sizeof(struct
276                                                     fsl_usb2_platform_data));
277                 if (ret)
278                         goto unreg_mph;
279                 i++;
280         }
281
282         for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
283                 struct resource r[2];
284                 struct fsl_usb2_platform_data usb_data;
285                 const unsigned char *prop = NULL;
286
287                 if (!of_device_is_available(np))
288                         continue;
289
290                 memset(&r, 0, sizeof(r));
291                 memset(&usb_data, 0, sizeof(usb_data));
292
293                 ret = of_address_to_resource(np, 0, &r[0]);
294                 if (ret)
295                         goto unreg_mph;
296
297                 of_irq_to_resource(np, 0, &r[1]);
298
299                 prop = of_get_property(np, "dr_mode", NULL);
300
301                 if (!prop || !strcmp(prop, "host")) {
302                         usb_data.operating_mode = FSL_USB2_DR_HOST;
303                         usb_dev_dr_host = platform_device_register_simple(
304                                         "fsl-ehci", i, r, 2);
305                         if (IS_ERR(usb_dev_dr_host)) {
306                                 ret = PTR_ERR(usb_dev_dr_host);
307                                 goto err;
308                         }
309                 } else if (prop && !strcmp(prop, "peripheral")) {
310                         usb_data.operating_mode = FSL_USB2_DR_DEVICE;
311                         usb_dev_dr_client = platform_device_register_simple(
312                                         "fsl-usb2-udc", i, r, 2);
313                         if (IS_ERR(usb_dev_dr_client)) {
314                                 ret = PTR_ERR(usb_dev_dr_client);
315                                 goto err;
316                         }
317                 } else if (prop && !strcmp(prop, "otg")) {
318                         usb_data.operating_mode = FSL_USB2_DR_OTG;
319                         usb_dev_dr_host = platform_device_register_simple(
320                                         "fsl-ehci", i, r, 2);
321                         if (IS_ERR(usb_dev_dr_host)) {
322                                 ret = PTR_ERR(usb_dev_dr_host);
323                                 goto err;
324                         }
325                         usb_dev_dr_client = platform_device_register_simple(
326                                         "fsl-usb2-udc", i, r, 2);
327                         if (IS_ERR(usb_dev_dr_client)) {
328                                 ret = PTR_ERR(usb_dev_dr_client);
329                                 goto err;
330                         }
331                 } else {
332                         ret = -EINVAL;
333                         goto err;
334                 }
335
336                 prop = of_get_property(np, "phy_type", NULL);
337                 usb_data.phy_mode = determine_usb_phy(prop);
338
339                 if (usb_dev_dr_host) {
340                         usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
341                         usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
342                                 dev.coherent_dma_mask;
343                         if ((ret = platform_device_add_data(usb_dev_dr_host,
344                                                 &usb_data, sizeof(struct
345                                                 fsl_usb2_platform_data))))
346                                 goto unreg_dr;
347                 }
348                 if (usb_dev_dr_client) {
349                         usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
350                         usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
351                                 dev.coherent_dma_mask;
352                         if ((ret = platform_device_add_data(usb_dev_dr_client,
353                                                 &usb_data, sizeof(struct
354                                                 fsl_usb2_platform_data))))
355                                 goto unreg_dr;
356                 }
357                 i++;
358         }
359         return 0;
360
361 unreg_dr:
362         if (usb_dev_dr_host)
363                 platform_device_unregister(usb_dev_dr_host);
364         if (usb_dev_dr_client)
365                 platform_device_unregister(usb_dev_dr_client);
366 unreg_mph:
367         if (usb_dev_mph)
368                 platform_device_unregister(usb_dev_mph);
369 err:
370         return ret;
371 }
372
373 arch_initcall(fsl_usb_of_init);
374
375 #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
376 static __be32 __iomem *rstcr;
377
378 static int __init setup_rstcr(void)
379 {
380         struct device_node *np;
381         np = of_find_node_by_name(NULL, "global-utilities");
382         if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
383                 rstcr = of_iomap(np, 0) + 0xb0;
384                 if (!rstcr)
385                         printk (KERN_EMERG "Error: reset control register "
386                                         "not mapped!\n");
387         } else if (ppc_md.restart == fsl_rstcr_restart)
388                 printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
389
390         if (np)
391                 of_node_put(np);
392         return 0;
393 }
394
395 arch_initcall(setup_rstcr);
396
397 void fsl_rstcr_restart(char *cmd)
398 {
399         local_irq_disable();
400         if (rstcr)
401                 /* set reset control register */
402                 out_be32(rstcr, 0x2);   /* HRESET_REQ */
403
404         while (1) ;
405 }
406 #endif
407
408 #if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
409 struct platform_diu_data_ops diu_ops;
410 EXPORT_SYMBOL(diu_ops);
411 #endif