MLK-11015-2 imx: rpmsg: add rpmsg for imx amp soc

- enable the rpmsg support for imx amp soc
- add the notify mechanism to notify imx_rpmsg in mu isr
  when there is msg sent from remote m4.
- Make sure that the vring alignment is 4096 on both linux and mqx
- add double check on MU msg transfer, make sure that the MU MSG is
  handled by the other side core.

Signed-off-by: Richard Zhu <Richard.Zhu@freescale.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/linux/imx_rpmsg.h b/include/linux/imx_rpmsg.h
new file mode 100644
index 000000000000..2970b4b8cf2a
--- /dev/null
+++ b/include/linux/imx_rpmsg.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU Lesser General
+ * Public License.  You may obtain a copy of the GNU Lesser General
+ * Public License Version 2.1 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/lgpl-license.html
+ * http://www.gnu.org/copyleft/lgpl.html
+ */
+
+/*
+ * @file linux/imx_rpmsg.h
+ *
+ * @brief Global header file for imx RPMSG
+ *
+ * @ingroup RPMSG
+ */
+#ifndef __LINUX_IMX_RPMSG_H__
+#define __LINUX_IMX_RPMSG_H__
+
+int imx_mu_rpmsg_send(unsigned int vq_id);
+int imx_mu_rpmsg_register_nb(const char *name, struct notifier_block *nb);
+int imx_mu_rpmsg_unregister_nb(const char *name, struct notifier_block *nb);
+#endif /* __LINUX_IMX_RPMSG_H__ */