157 lines
3.4 KiB
C
157 lines
3.4 KiB
C
/*
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* arch/ppc/syslib/ppc_sys.c
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*
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* PPC System library functions
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*
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* Maintainer: Kumar Gala <kumar.gala@freescale.com>
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*
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* Copyright 2005 Freescale Semiconductor Inc.
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* Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <asm/ppc_sys.h>
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int (*ppc_sys_device_fixup) (struct platform_device * pdev);
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static int ppc_sys_inited;
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void __init identify_ppc_sys_by_id(u32 id)
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{
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unsigned int i = 0;
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while (1) {
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if ((ppc_sys_specs[i].mask & id) == ppc_sys_specs[i].value)
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break;
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i++;
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}
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cur_ppc_sys_spec = &ppc_sys_specs[i];
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return;
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}
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void __init identify_ppc_sys_by_name(char *name)
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{
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unsigned int i = 0;
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while (ppc_sys_specs[i].ppc_sys_name[0])
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{
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if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
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break;
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i++;
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}
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cur_ppc_sys_spec = &ppc_sys_specs[i];
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return;
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}
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static int __init count_sys_specs(void)
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{
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int i = 0;
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while (ppc_sys_specs[i].ppc_sys_name[0])
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i++;
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return i;
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}
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static int __init find_chip_by_name_and_id(char *name, u32 id)
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{
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int ret = -1;
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unsigned int i = 0;
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unsigned int j = 0;
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unsigned int dups = 0;
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unsigned char matched[count_sys_specs()];
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while (ppc_sys_specs[i].ppc_sys_name[0]) {
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if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
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matched[j++] = i;
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i++;
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}
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ret = i;
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if (j != 0) {
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for (i = 0; i < j; i++) {
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if ((ppc_sys_specs[matched[i]].mask & id) ==
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ppc_sys_specs[matched[i]].value) {
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ret = matched[i];
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dups++;
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}
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}
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ret = (dups == 1) ? ret : (-1 * dups);
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}
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return ret;
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}
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void __init identify_ppc_sys_by_name_and_id(char *name, u32 id)
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{
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int i = find_chip_by_name_and_id(name, id);
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BUG_ON(i < 0);
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cur_ppc_sys_spec = &ppc_sys_specs[i];
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}
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/* Update all memory resources by paddr, call before platform_device_register */
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void __init
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ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr)
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{
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int i;
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for (i = 0; i < pdev->num_resources; i++) {
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struct resource *r = &pdev->resource[i];
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if ((r->flags & IORESOURCE_MEM) == IORESOURCE_MEM) {
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r->start += paddr;
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r->end += paddr;
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}
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}
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}
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/* Get platform_data pointer out of platform device, call before platform_device_register */
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void *__init ppc_sys_get_pdata(enum ppc_sys_devices dev)
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{
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return ppc_sys_platform_devices[dev].dev.platform_data;
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}
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void ppc_sys_device_remove(enum ppc_sys_devices dev)
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{
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unsigned int i;
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if (ppc_sys_inited) {
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platform_device_unregister(&ppc_sys_platform_devices[dev]);
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} else {
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if (cur_ppc_sys_spec == NULL)
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return;
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for (i = 0; i < cur_ppc_sys_spec->num_devices; i++)
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if (cur_ppc_sys_spec->device_list[i] == dev)
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cur_ppc_sys_spec->device_list[i] = -1;
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}
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}
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static int __init ppc_sys_init(void)
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{
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unsigned int i, dev_id, ret = 0;
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BUG_ON(cur_ppc_sys_spec == NULL);
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for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
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dev_id = cur_ppc_sys_spec->device_list[i];
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if (dev_id != -1) {
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if (ppc_sys_device_fixup != NULL)
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ppc_sys_device_fixup(&ppc_sys_platform_devices
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[dev_id]);
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if (platform_device_register
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(&ppc_sys_platform_devices[dev_id])) {
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ret = 1;
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printk(KERN_ERR
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"unable to register device %d\n",
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dev_id);
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}
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}
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}
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ppc_sys_inited = 1;
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return ret;
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}
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subsys_initcall(ppc_sys_init);
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