projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7bb412a6 SQ |
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); |