| Simon Que | 7bb412a | 2011-02-17 09:52:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * OMAP hardware spinlock device initialization |
| 3 | * |
| 4 | * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com |
| 5 | * |
| 6 | * Contact: Simon Que <sque@ti.com> |
| 7 | * Hari Kanigeri <h-kanigeri2@ti.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * version 2 as published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/err.h> |
| 22 | |
| 23 | #include <plat/omap_hwmod.h> |
| 24 | #include <plat/omap_device.h> |
| 25 | |
| 26 | struct omap_device_pm_latency omap_spinlock_latency[] = { |
| 27 | { |
| 28 | .deactivate_func = omap_device_idle_hwmods, |
| 29 | .activate_func = omap_device_enable_hwmods, |
| 30 | .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, |
| 31 | } |
| 32 | }; |
| 33 | |
| 34 | int __init hwspinlocks_init(void) |
| 35 | { |
| 36 | int retval = 0; |
| 37 | struct omap_hwmod *oh; |
| 38 | struct omap_device *od; |
| 39 | const char *oh_name = "spinlock"; |
| 40 | const char *dev_name = "omap_hwspinlock"; |
| 41 | |
| 42 | /* |
| 43 | * Hwmod lookup will fail in case our platform doesn't support the |
| 44 | * hardware spinlock module, so it is safe to run this initcall |
| 45 | * on all omaps |
| 46 | */ |
| 47 | oh = omap_hwmod_lookup(oh_name); |
| 48 | if (oh == NULL) |
| 49 | return -EINVAL; |
| 50 | |
| 51 | od = omap_device_build(dev_name, 0, oh, NULL, 0, |
| 52 | omap_spinlock_latency, |
| 53 | ARRAY_SIZE(omap_spinlock_latency), false); |
| 54 | if (IS_ERR(od)) { |
| 55 | pr_err("Can't build omap_device for %s:%s\n", dev_name, |
| 56 | oh_name); |
| 57 | retval = PTR_ERR(od); |
| 58 | } |
| 59 | |
| 60 | return retval; |
| 61 | } |
| 62 | /* early board code might need to reserve specific hwspinlock instances */ |
| 63 | postcore_initcall(hwspinlocks_init); |