2 * PPC System library functions
4 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
6 * Copyright 2005 Freescale Semiconductor Inc.
7 * Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
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.
15 #include <linux/string.h>
16 #include <linux/bootmem.h>
17 #include <asm/ppc_sys.h>
19 int (*ppc_sys_device_fixup) (struct platform_device * pdev);
21 static int ppc_sys_inited;
22 static int ppc_sys_func_inited;
24 static const char *ppc_sys_func_names[] = {
25 [PPC_SYS_FUNC_DUMMY] = "dummy",
26 [PPC_SYS_FUNC_ETH] = "eth",
27 [PPC_SYS_FUNC_UART] = "uart",
28 [PPC_SYS_FUNC_HLDC] = "hldc",
29 [PPC_SYS_FUNC_USB] = "usb",
30 [PPC_SYS_FUNC_IRDA] = "irda",
33 void __init identify_ppc_sys_by_id(u32 id)
37 if ((ppc_sys_specs[i].mask & id) == ppc_sys_specs[i].value)
42 cur_ppc_sys_spec = &ppc_sys_specs[i];
47 void __init identify_ppc_sys_by_name(char *name)
50 while (ppc_sys_specs[i].ppc_sys_name[0]) {
51 if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
55 cur_ppc_sys_spec = &ppc_sys_specs[i];
60 static int __init count_sys_specs(void)
63 while (ppc_sys_specs[i].ppc_sys_name[0])
68 static int __init find_chip_by_name_and_id(char *name, u32 id)
73 unsigned int dups = 0;
75 unsigned char matched[count_sys_specs()];
77 while (ppc_sys_specs[i].ppc_sys_name[0]) {
78 if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
86 for (i = 0; i < j; i++) {
87 if ((ppc_sys_specs[matched[i]].mask & id) ==
88 ppc_sys_specs[matched[i]].value) {
93 ret = (dups == 1) ? ret : (-1 * dups);
98 void __init identify_ppc_sys_by_name_and_id(char *name, u32 id)
100 int i = find_chip_by_name_and_id(name, id);
102 cur_ppc_sys_spec = &ppc_sys_specs[i];
105 /* Update all memory resources by paddr, call before platform_device_register */
107 ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr)
110 for (i = 0; i < pdev->num_resources; i++) {
111 struct resource *r = &pdev->resource[i];
112 if ((r->flags & IORESOURCE_MEM) == IORESOURCE_MEM) {
119 /* Get platform_data pointer out of platform device, call before platform_device_register */
120 void *__init ppc_sys_get_pdata(enum ppc_sys_devices dev)
122 return ppc_sys_platform_devices[dev].dev.platform_data;
125 void ppc_sys_device_remove(enum ppc_sys_devices dev)
129 if (ppc_sys_inited) {
130 platform_device_unregister(&ppc_sys_platform_devices[dev]);
132 if (cur_ppc_sys_spec == NULL)
134 for (i = 0; i < cur_ppc_sys_spec->num_devices; i++)
135 if (cur_ppc_sys_spec->device_list[i] == dev)
136 cur_ppc_sys_spec->device_list[i] = -1;
140 /* Platform-notify mapping
141 * Helper function for BSP code to assign board-specific platfom-divice bits
144 void platform_notify_map(const struct platform_notify_dev_map *map,
147 struct platform_device *pdev;
151 /* do nothing if no device or no bus_id */
152 if (!dev || !dev->bus_id)
155 /* call per device map */
156 while (map->bus_id != NULL) {
158 s = strrchr(dev->bus_id, '.');
160 idx = (int)simple_strtol(s + 1, NULL, 10);
164 len = s - dev->bus_id;
166 if (!strncmp(dev->bus_id, map->bus_id, len)) {
167 pdev = container_of(dev, struct platform_device, dev);
175 Function assignment stuff.
176 Intended to work as follows:
177 the device name defined in foo_devices.c will be concatenated with :"func",
178 where func is string map of respective function from platfom_device_func enum
180 The PPC_SYS_FUNC_DUMMY function is intended to remove all assignments, making the device to appear
181 in platform bus with unmodified name.
185 Here we'll replace .name pointers with fixed-lenght strings
186 Hereby, this should be called *before* any func stuff triggeded.
188 void ppc_sys_device_initfunc(void)
192 static char new_names[NUM_PPC_SYS_DEVS][BUS_ID_SIZE];
193 enum ppc_sys_devices cur_dev;
195 /* If inited yet, do nothing */
196 if (ppc_sys_func_inited)
199 for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
200 if ((cur_dev = cur_ppc_sys_spec->device_list[i]) < 0)
203 if (ppc_sys_platform_devices[cur_dev].name) {
205 name = ppc_sys_platform_devices[cur_dev].name;
206 strlcpy(new_names[i], name, BUS_ID_SIZE);
207 ppc_sys_platform_devices[cur_dev].name = new_names[i];
211 ppc_sys_func_inited = 1;
214 /*The "engine" of the func stuff. Here we either concat specified function string description
215 to the name, or remove it if PPC_SYS_FUNC_DUMMY parameter is passed here*/
216 void ppc_sys_device_setfunc(enum ppc_sys_devices dev,
217 enum platform_device_func func)
220 char *name = (char *)ppc_sys_platform_devices[dev].name;
221 char tmp[BUS_ID_SIZE];
223 if (!ppc_sys_func_inited) {
224 printk(KERN_ERR "Unable to alter function - not inited!\n");
228 if (ppc_sys_inited) {
229 platform_device_unregister(&ppc_sys_platform_devices[dev]);
232 if ((s = (char *)strchr(name, ':')) != NULL) { /* reassign */
233 /* Either change the name after ':' or remove func modifications */
234 if (func != PPC_SYS_FUNC_DUMMY)
235 strlcpy(s + 1, ppc_sys_func_names[func], BUS_ID_SIZE);
238 } else if (func != PPC_SYS_FUNC_DUMMY) {
239 /* do assignment if it is not just "clear" request */
240 sprintf(tmp, "%s:%s", name, ppc_sys_func_names[func]);
241 strlcpy(name, tmp, BUS_ID_SIZE);
244 if (ppc_sys_inited) {
245 platform_device_register(&ppc_sys_platform_devices[dev]);
249 void ppc_sys_device_disable(enum ppc_sys_devices dev)
251 BUG_ON(cur_ppc_sys_spec == NULL);
253 /*Check if it is enabled*/
254 if(!(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED)) {
255 if (ppc_sys_inited) {
256 platform_device_unregister(&ppc_sys_platform_devices[dev]);
258 cur_ppc_sys_spec->config[dev] |= PPC_SYS_CONFIG_DISABLED;
262 void ppc_sys_device_enable(enum ppc_sys_devices dev)
264 BUG_ON(cur_ppc_sys_spec == NULL);
266 /*Check if it is disabled*/
267 if(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED) {
268 if (ppc_sys_inited) {
269 platform_device_register(&ppc_sys_platform_devices[dev]);
271 cur_ppc_sys_spec->config[dev] &= ~PPC_SYS_CONFIG_DISABLED;
276 void ppc_sys_device_enable_all(void)
278 enum ppc_sys_devices cur_dev;
281 for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
282 cur_dev = cur_ppc_sys_spec->device_list[i];
283 ppc_sys_device_enable(cur_dev);
287 void ppc_sys_device_disable_all(void)
289 enum ppc_sys_devices cur_dev;
292 for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
293 cur_dev = cur_ppc_sys_spec->device_list[i];
294 ppc_sys_device_disable(cur_dev);
299 static int __init ppc_sys_init(void)
301 unsigned int i, dev_id, ret = 0;
303 BUG_ON(cur_ppc_sys_spec == NULL);
305 for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
306 dev_id = cur_ppc_sys_spec->device_list[i];
307 if ((dev_id != -1) &&
308 !(cur_ppc_sys_spec->config[dev_id] & PPC_SYS_CONFIG_DISABLED)) {
309 if (ppc_sys_device_fixup != NULL)
310 ppc_sys_device_fixup(&ppc_sys_platform_devices
312 if (platform_device_register
313 (&ppc_sys_platform_devices[dev_id])) {
316 "unable to register device %d\n",
326 subsys_initcall(ppc_sys_init);