projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| fb180322 JR |
1 | /* |
| 2 | * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * Author: John Rigby <jrigby@freescale.com> | |
| 5 | * | |
| 6 | * Description: | |
| 7 | * MPC512x Shared code | |
| 8 | * | |
| 9 | * This is free software; you can redistribute it and/or modify it | |
| 10 | * under the terms of the GNU General Public License as published by | |
| 11 | * the Free Software Foundation; either version 2 of the License, or | |
| 12 | * (at your option) any later version. | |
| 13 | */ | |
| 14 | ||
| 15 | #include <linux/kernel.h> | |
| 16 | #include <linux/io.h> | |
| 17 | #include <linux/irq.h> | |
| 18 | #include <linux/of_platform.h> | |
| 19 | ||
| 20 | #include <asm/machdep.h> | |
| 21 | #include <asm/ipic.h> | |
| 22 | #include <asm/prom.h> | |
| 23 | #include <asm/time.h> | |
| 24 | ||
| 25 | #include "mpc512x.h" | |
| 26 | ||
| 27 | unsigned long | |
| 28 | mpc512x_find_ips_freq(struct device_node *node) | |
| 29 | { | |
| 30 | struct device_node *np; | |
| 31 | const unsigned int *p_ips_freq = NULL; | |
| 32 | ||
| 33 | of_node_get(node); | |
| 34 | while (node) { | |
| 35 | p_ips_freq = of_get_property(node, "bus-frequency", NULL); | |
| 36 | if (p_ips_freq) | |
| 37 | break; | |
| 38 | ||
| 39 | np = of_get_parent(node); | |
| 40 | of_node_put(node); | |
| 41 | node = np; | |
| 42 | } | |
| 43 | if (node) | |
| 44 | of_node_put(node); | |
| 45 | ||
| 46 | return p_ips_freq ? *p_ips_freq : 0; | |
| 47 | } | |
| 48 | EXPORT_SYMBOL(mpc512x_find_ips_freq); | |
| 49 | ||
| 50 | void __init mpc512x_init_IRQ(void) | |
| 51 | { | |
| 52 | struct device_node *np; | |
| 53 | ||
| 54 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic"); | |
| 55 | if (!np) | |
| 56 | return; | |
| 57 | ||
| 58 | ipic_init(np, 0); | |
| 59 | of_node_put(np); | |
| 60 | ||
| 61 | /* | |
| 62 | * Initialize the default interrupt mapping priorities, | |
| 63 | * in case the boot rom changed something on us. | |
| 64 | */ | |
| 65 | ipic_set_default_priority(); | |
| 66 | } | |
| 67 | ||
| 68 | /* | |
| 69 | * Nodes to do bus probe on, soc and localbus | |
| 70 | */ | |
| 71 | static struct of_device_id __initdata of_bus_ids[] = { | |
| 72 | { .compatible = "fsl,mpc5121-immr", }, | |
| 73 | { .compatible = "fsl,mpc5121-localbus", }, | |
| 74 | {}, | |
| 75 | }; | |
| 76 | ||
| 77 | void __init mpc512x_declare_of_platform_devices(void) | |
| 78 | { | |
| 79 | if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) | |
| 80 | printk(KERN_ERR __FILE__ ": " | |
| 81 | "Error while probing of_platform bus\n"); | |
| 82 | } | |
| 83 |