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 #include <linux/hwspinlock.h> 23 24 #include "soc.h" 25 #include "omap_hwmod.h" 26 #include "omap_device.h" 27 28 static struct hwspinlock_pdata omap_hwspinlock_pdata __initdata = { 29 .base_id = 0, 30 }; 31 hwspinlocks_init(void)32static int __init hwspinlocks_init(void) 33 { 34 int retval = 0; 35 struct omap_hwmod *oh; 36 struct platform_device *pdev; 37 const char *oh_name = "spinlock"; 38 const char *dev_name = "omap_hwspinlock"; 39 40 /* 41 * Hwmod lookup will fail in case our platform doesn't support the 42 * hardware spinlock module, so it is safe to run this initcall 43 * on all omaps 44 */ 45 oh = omap_hwmod_lookup(oh_name); 46 if (oh == NULL) 47 return -EINVAL; 48 49 pdev = omap_device_build(dev_name, 0, oh, &omap_hwspinlock_pdata, 50 sizeof(struct hwspinlock_pdata)); 51 if (IS_ERR(pdev)) { 52 pr_err("Can't build omap_device for %s:%s\n", dev_name, 53 oh_name); 54 retval = PTR_ERR(pdev); 55 } 56 57 return retval; 58 } 59 /* early board code might need to reserve specific hwspinlock instances */ 60 omap_postcore_initcall(hwspinlocks_init); 61