From patchwork Mon Oct 18 07:44:35 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ohad Ben Cohen X-Patchwork-Id: 261361 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9I7pWfY031974 for ; Mon, 18 Oct 2010 07:51:34 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754380Ab0JRHun (ORCPT ); Mon, 18 Oct 2010 03:50:43 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:37682 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754314Ab0JRHul (ORCPT ); Mon, 18 Oct 2010 03:50:41 -0400 Received: by mail-bw0-f46.google.com with SMTP id 15so407682bwz.19 for ; Mon, 18 Oct 2010 00:50:40 -0700 (PDT) Received: by 10.204.127.96 with SMTP id f32mr3977924bks.201.1287388240116; Mon, 18 Oct 2010 00:50:40 -0700 (PDT) Received: from localhost.localdomain (109-186-69-160.bb.netvision.net.il [109.186.69.160]) by mx.google.com with ESMTPS id m8sm6774faj.1.2010.10.18.00.50.37 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 18 Oct 2010 00:50:39 -0700 (PDT) From: Ohad Ben-Cohen To: , , Cc: , Greg KH , Tony Lindgren , Benoit Cousson , Grant Likely , Hari Kanigeri , Suman Anna , Simon Que , Ohad Ben-Cohen Subject: [PATCH 3/3] omap: add hwspinlock device Date: Mon, 18 Oct 2010 09:44:35 +0200 Message-Id: <1287387875-14168-4-git-send-email-ohad@wizery.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1287387875-14168-1-git-send-email-ohad@wizery.com> References: <1287387875-14168-1-git-send-email-ohad@wizery.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Mon, 18 Oct 2010 07:51:34 +0000 (UTC) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 7352412..e55d1c5 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -190,3 +190,4 @@ obj-y += $(smc91x-m) $(smc91x-y) smsc911x-$(CONFIG_SMSC911X) := gpmc-smsc911x.o obj-y += $(smsc911x-m) $(smsc911x-y) +obj-$(CONFIG_ARCH_OMAP4) += hwspinlock.o diff --git a/arch/arm/mach-omap2/hwspinlock.c b/arch/arm/mach-omap2/hwspinlock.c new file mode 100644 index 0000000..641a6d4 --- /dev/null +++ b/arch/arm/mach-omap2/hwspinlock.c @@ -0,0 +1,67 @@ +/* + * OMAP hardware spinlock device initialization + * + * Copyright (C) 2010 Texas Instruments. All rights reserved. + * + * Contact: Simon Que + * Hari Kanigeri + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#include +#include +#include + +#include +#include + +struct omap_device_pm_latency omap_spinlock_latency[] = { + { + .deactivate_func = omap_device_idle_hwmods, + .activate_func = omap_device_enable_hwmods, + .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, + } +}; + +int __init hwspinlocks_init(void) +{ + int retval = 0; + struct omap_hwmod *oh; + struct omap_device *od; + const char *oh_name = "spinlock"; + const char *dev_name = "omap_hwspinlock"; + + /* + * Hwmod lookup will fail in case our platform doesn't support the + * hardware spinlock module, so it is safe to run this initcall + * on all omaps + */ + oh = omap_hwmod_lookup(oh_name); + if (oh == NULL) + return -EINVAL; + + od = omap_device_build(dev_name, 0, oh, NULL, 0, + omap_spinlock_latency, + ARRAY_SIZE(omap_spinlock_latency), false); + if (IS_ERR(od)) { + pr_err("Can't build omap_device for %s:%s\n", dev_name, + oh_name); + retval = PTR_ERR(od); + } + + return retval; +} +postcore_initcall(hwspinlocks_init);