Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 | /*
* PPC System library functions
*
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
*
* Copyright 2005 Freescale Semiconductor Inc.
* Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/string.h>
#include <linux/bootmem.h>
#include <asm/ppc_sys.h>
int (*ppc_sys_device_fixup) (struct platform_device * pdev);
static int ppc_sys_inited;
static int ppc_sys_func_inited;
static const char *ppc_sys_func_names[] = {
[PPC_SYS_FUNC_DUMMY] = "dummy",
[PPC_SYS_FUNC_ETH] = "eth",
[PPC_SYS_FUNC_UART] = "uart",
[PPC_SYS_FUNC_HLDC] = "hldc",
[PPC_SYS_FUNC_USB] = "usb",
[PPC_SYS_FUNC_IRDA] = "irda",
};
void __init identify_ppc_sys_by_id(u32 id)
{
unsigned int i = 0;
while (1) {
if ((ppc_sys_specs[i].mask & id) == ppc_sys_specs[i].value)
break;
i++;
}
cur_ppc_sys_spec = &ppc_sys_specs[i];
return;
}
void __init identify_ppc_sys_by_name(char *name)
{
unsigned int i = 0;
while (ppc_sys_specs[i].ppc_sys_name[0]) {
if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
break;
i++;
}
cur_ppc_sys_spec = &ppc_sys_specs[i];
return;
}
static int __init count_sys_specs(void)
{
int i = 0;
while (ppc_sys_specs[i].ppc_sys_name[0])
i++;
return i;
}
static int __init find_chip_by_name_and_id(char *name, u32 id)
{
int ret = -1;
unsigned int i = 0;
unsigned int j = 0;
unsigned int dups = 0;
unsigned char matched[count_sys_specs()];
while (ppc_sys_specs[i].ppc_sys_name[0]) {
if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
matched[j++] = i;
i++;
}
ret = i;
if (j != 0) {
for (i = 0; i < j; i++) {
if ((ppc_sys_specs[matched[i]].mask & id) ==
ppc_sys_specs[matched[i]].value) {
ret = matched[i];
dups++;
}
}
ret = (dups == 1) ? ret : (-1 * dups);
}
return ret;
}
void __init identify_ppc_sys_by_name_and_id(char *name, u32 id)
{
int i = find_chip_by_name_and_id(name, id);
BUG_ON(i < 0);
cur_ppc_sys_spec = &ppc_sys_specs[i];
}
/* Update all memory resources by paddr, call before platform_device_register */
void __init
ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr)
{
int i;
for (i = 0; i < pdev->num_resources; i++) {
struct resource *r = &pdev->resource[i];
if (((r->flags & IORESOURCE_MEM) == IORESOURCE_MEM) &&
((r->flags & PPC_SYS_IORESOURCE_FIXUPPED) != PPC_SYS_IORESOURCE_FIXUPPED)) {
r->start += paddr;
r->end += paddr;
r->flags |= PPC_SYS_IORESOURCE_FIXUPPED;
}
}
}
/* Get platform_data pointer out of platform device, call before platform_device_register */
void *__init ppc_sys_get_pdata(enum ppc_sys_devices dev)
{
return ppc_sys_platform_devices[dev].dev.platform_data;
}
void ppc_sys_device_remove(enum ppc_sys_devices dev)
{
unsigned int i;
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
} else {
if (cur_ppc_sys_spec == NULL)
return;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++)
if (cur_ppc_sys_spec->device_list[i] == dev)
cur_ppc_sys_spec->device_list[i] = -1;
}
}
/* Platform-notify mapping
* Helper function for BSP code to assign board-specific platfom-divice bits
*/
void platform_notify_map(const struct platform_notify_dev_map *map,
struct device *dev)
{
struct platform_device *pdev;
int len, idx;
const char *s;
/* do nothing if no device or no bus_id */
if (!dev || !dev->bus_id)
return;
/* call per device map */
while (map->bus_id != NULL) {
idx = -1;
s = strrchr(dev->bus_id, '.');
if (s != NULL) {
idx = (int)simple_strtol(s + 1, NULL, 10);
len = s - dev->bus_id;
} else {
s = dev->bus_id;
len = strlen(dev->bus_id);
}
if (!strncmp(dev->bus_id, map->bus_id, len)) {
pdev = container_of(dev, struct platform_device, dev);
map->rtn(pdev, idx);
}
map++;
}
}
/*
Function assignment stuff.
Intended to work as follows:
the device name defined in foo_devices.c will be concatenated with :"func",
where func is string map of respective function from platfom_device_func enum
The PPC_SYS_FUNC_DUMMY function is intended to remove all assignments, making the device to appear
in platform bus with unmodified name.
*/
/*
Here we'll replace .name pointers with fixed-lenght strings
Hereby, this should be called *before* any func stuff triggeded.
*/
void ppc_sys_device_initfunc(void)
{
int i;
const char *name;
static char new_names[NUM_PPC_SYS_DEVS][BUS_ID_SIZE];
enum ppc_sys_devices cur_dev;
/* If inited yet, do nothing */
if (ppc_sys_func_inited)
return;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
if ((cur_dev = cur_ppc_sys_spec->device_list[i]) < 0)
continue;
if (ppc_sys_platform_devices[cur_dev].name) {
/*backup name */
name = ppc_sys_platform_devices[cur_dev].name;
strlcpy(new_names[i], name, BUS_ID_SIZE);
ppc_sys_platform_devices[cur_dev].name = new_names[i];
}
}
ppc_sys_func_inited = 1;
}
/*The "engine" of the func stuff. Here we either concat specified function string description
to the name, or remove it if PPC_SYS_FUNC_DUMMY parameter is passed here*/
void ppc_sys_device_setfunc(enum ppc_sys_devices dev,
enum platform_device_func func)
{
char *s;
char *name = (char *)ppc_sys_platform_devices[dev].name;
char tmp[BUS_ID_SIZE];
if (!ppc_sys_func_inited) {
printk(KERN_ERR "Unable to alter function - not inited!\n");
return;
}
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
}
if ((s = (char *)strchr(name, ':')) != NULL) { /* reassign */
/* Either change the name after ':' or remove func modifications */
if (func != PPC_SYS_FUNC_DUMMY)
strlcpy(s + 1, ppc_sys_func_names[func], BUS_ID_SIZE);
else
*s = 0;
} else if (func != PPC_SYS_FUNC_DUMMY) {
/* do assignment if it is not just "clear" request */
sprintf(tmp, "%s:%s", name, ppc_sys_func_names[func]);
strlcpy(name, tmp, BUS_ID_SIZE);
}
if (ppc_sys_inited) {
platform_device_register(&ppc_sys_platform_devices[dev]);
}
}
void ppc_sys_device_disable(enum ppc_sys_devices dev)
{
BUG_ON(cur_ppc_sys_spec == NULL);
/*Check if it is enabled*/
if(!(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED)) {
if (ppc_sys_inited) {
platform_device_unregister(&ppc_sys_platform_devices[dev]);
}
cur_ppc_sys_spec->config[dev] |= PPC_SYS_CONFIG_DISABLED;
}
}
void ppc_sys_device_enable(enum ppc_sys_devices dev)
{
BUG_ON(cur_ppc_sys_spec == NULL);
/*Check if it is disabled*/
if(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED) {
if (ppc_sys_inited) {
platform_device_register(&ppc_sys_platform_devices[dev]);
}
cur_ppc_sys_spec->config[dev] &= ~PPC_SYS_CONFIG_DISABLED;
}
}
void ppc_sys_device_enable_all(void)
{
enum ppc_sys_devices cur_dev;
int i;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
cur_dev = cur_ppc_sys_spec->device_list[i];
ppc_sys_device_enable(cur_dev);
}
}
void ppc_sys_device_disable_all(void)
{
enum ppc_sys_devices cur_dev;
int i;
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
cur_dev = cur_ppc_sys_spec->device_list[i];
ppc_sys_device_disable(cur_dev);
}
}
static int __init ppc_sys_init(void)
{
unsigned int i, dev_id, ret = 0;
BUG_ON(cur_ppc_sys_spec == NULL);
for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
dev_id = cur_ppc_sys_spec->device_list[i];
if ((dev_id != -1) &&
!(cur_ppc_sys_spec->config[dev_id] & PPC_SYS_CONFIG_DISABLED)) {
if (ppc_sys_device_fixup != NULL)
ppc_sys_device_fixup(&ppc_sys_platform_devices
[dev_id]);
if (platform_device_register
(&ppc_sys_platform_devices[dev_id])) {
ret = 1;
printk(KERN_ERR
"unable to register device %d\n",
dev_id);
}
}
}
ppc_sys_inited = 1;
return ret;
}
subsys_initcall(ppc_sys_init);
|