diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/kernel/devtree.c')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/kernel/devtree.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/kernel/devtree.c b/target/linux/ubicom32/files/arch/ubicom32/kernel/devtree.c deleted file mode 100644 index 1f824d2f15..0000000000 --- a/target/linux/ubicom32/files/arch/ubicom32/kernel/devtree.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * arch/ubicom32/kernel/devtree.c - * Ubicom32 architecture device tree implementation. - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port 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. - * - * The Ubicom32 Linux Kernel Port is distributed in the hope that it - * will be useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <asm/devtree.h> - -/* - * The device tree. - */ -struct devtree_node *devtree; - -/* - * devtree_print() - * Print the device tree. - */ -void devtree_print(void) -{ - struct devtree_node *p = devtree; - printk(KERN_INFO "Device Tree:\n"); - while (p) { - if (p->magic != DEVTREE_NODE_MAGIC) { - printk(KERN_EMERG - "device tree has improper node: %p\n", p); - return; - } - printk(KERN_INFO "\t%p: sendirq=%03d, recvirq=%03d, " - " name=%s\n", p, p->sendirq, p->recvirq, p->name); - p = p->next; - } -} -EXPORT_SYMBOL(devtree_print); - -/* - * devtree_irq() - * Return the IRQ(s) associated with devtree node. - */ -int devtree_irq(struct devtree_node *dn, - unsigned char *sendirq, - unsigned char *recvirq) -{ - if (dn->magic != DEVTREE_NODE_MAGIC) { - printk(KERN_EMERG "improper node: %p\n", dn); - if (sendirq) { - *sendirq = DEVTREE_IRQ_NONE; - } - if (recvirq) { - *recvirq = DEVTREE_IRQ_NONE; - } - return -EFAULT; - } - - /* - * Copy the devtree irq(s) to the output parameters. - */ - if (sendirq) { - *sendirq = dn->sendirq; - } - if (recvirq) { - *recvirq = dn->recvirq; - } - return 0; -} -EXPORT_SYMBOL(devtree_irq); - -/* - * devtree_find_next() - * Provide an iterator for walking the device tree. - */ -struct devtree_node *devtree_find_next(struct devtree_node **cur) -{ - struct devtree_node *p = *cur; - if (!p) { - *cur = devtree; - return devtree; - } - p = p->next; - *cur = p; - return p; -} - -/* - * devtree_find_by_irq() - * Return the node associated with a given irq. - */ -struct devtree_node *devtree_find_by_irq(uint8_t sendirq, uint8_t recvirq) -{ - struct devtree_node *p = devtree; - - if (sendirq == recvirq) { - printk(KERN_EMERG "identical request makes no sense sendirq = " - "%d, recvirq= %d\n", sendirq, recvirq); - return NULL; - } - - while (p) { - if (p->magic != DEVTREE_NODE_MAGIC) { - printk(KERN_EMERG - "device tree has improper node: %p\n", p); - return NULL; - } - - /* - * See if we can find a match on the IRQ(s) specified. - */ - if ((sendirq == p->sendirq) && (recvirq == p->recvirq)) { - return p; - } - - if ((sendirq == DEVTREE_IRQ_DONTCARE) && - (p->recvirq == recvirq)) { - return p; - } - - if ((recvirq == DEVTREE_IRQ_DONTCARE) && - (p->sendirq == sendirq)) { - return p; - } - - p = p->next; - } - return NULL; -} -EXPORT_SYMBOL(devtree_find_by_irq); - -/* - * devtree_find_node() - * Find a node in the device tree by name. - */ -struct devtree_node *devtree_find_node(const char *str) -{ - struct devtree_node *p = devtree; - while (p) { - if (p->magic != DEVTREE_NODE_MAGIC) { - printk(KERN_EMERG - "device tree has improper node: %p\n", p); - return NULL; - } - if (strcmp(p->name, str) == 0) { - return p; - } - p = p->next; - } - return NULL; -} -EXPORT_SYMBOL(devtree_find_node); |