1 files changed, 85 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/remote_spinlock.c b/arch/arm/mach-msm/remote_spinlock.c
new file mode 100644
index 000000000000..6e488865930e
--- /dev/null
+++ b/arch/arm/mach-msm/remote_spinlock.c
@@ -0,0 +1,85 @@
+/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Code Aurora Forum nor
+ *       the names of its contributors may be used to endorse or promote
+ *       products derived from this software without specific prior written
+ *       permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this software
+ * may be relicensed by the recipient under the terms of the GNU General Public
+ * License version 2 ("GPL") and only version 2, in which case the provisions of
+ * the GPL apply INSTEAD OF those given above.  If the recipient relicenses the
+ * software under the GPL, then the identification text in the MODULE_LICENSE
+ * macro must be changed to reflect "GPLv2" instead of "Dual BSD/GPL".  Once a
+ * recipient changes the license terms to the GPL, subsequent recipients shall
+ * not relicense under alternate licensing terms, including the BSD or dual
+ * BSD/GPL terms.  In addition, the following license statement immediately
+ * below and between the words START and END shall also then apply when this
+ * software is relicensed under the GPL:
+ *
+ * START
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 and only 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * END
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/kernel.h>
+
+#include <asm/system.h>
+
+#include <mach/remote_spinlock.h>
+#include "smd_private.h"
+
+#define SMEM_SPINLOCK_COUNT 8
+#define SMEM_SPINLOCK_ARRAY_SIZE (SMEM_SPINLOCK_COUNT * sizeof(uint32_t))
+
+int _remote_spin_lock_init(remote_spin_lock_id_t id, _remote_spinlock_t *lock)
+{
+	_remote_spinlock_t spinlock_start;
+
+	if (id >= SMEM_SPINLOCK_COUNT)
+		return -EINVAL;
+
+	spinlock_start = smem_alloc(SMEM_SPINLOCK_ARRAY,
+				    SMEM_SPINLOCK_ARRAY_SIZE);
+	if (spinlock_start == NULL)
+		return -ENXIO;
+
+	*lock = spinlock_start + id;
+
+	return 0;
+}
+