esoc: Snapshot esoc drivers

Snapshot esoc components, headers and UAPI headers from
msm-3.18@0922caf50f22e751a05e
(Merge "usb: dwc3-msm: Fix incorrect roles with
multiple instances")

Change-Id: I55e7ea4359c1f5b855f082e66d5816316da2fd48
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>

3 files changed, 127 insertions, 0 deletions

diff --git a/include/linux/esoc_client.h b/include/linux/esoc_client.h
new file mode 100644
index 000000000000..43c03389ecac
--- /dev/null
+++ b/include/linux/esoc_client.h
@@ -0,0 +1,53 @@
+/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * 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.
+ */
+#ifndef __ESOC_CLIENT_H_
+#define __ESOC_CLIENT_H_
+
+#include <linux/device.h>
+#include <linux/esoc_ctrl.h>
+#include <linux/notifier.h>
+
+/*
+ * struct esoc_desc: Describes an external soc
+ * @name: external soc name
+ * @priv: private data for external soc
+ */
+struct esoc_desc {
+	const char *name;
+	const char *link;
+	void *priv;
+};
+
+#ifdef CONFIG_ESOC_CLIENT
+/* Can return probe deferral */
+struct esoc_desc *devm_register_esoc_client(struct device *dev,
+							const char *name);
+void devm_unregister_esoc_client(struct device *dev,
+						struct esoc_desc *esoc_desc);
+int esoc_register_client_notifier(struct notifier_block *nb);
+#else
+static inline struct esoc_desc *devm_register_esoc_client(struct device *dev,
+							const char *name)
+{
+	return NULL;
+}
+static inline void devm_unregister_esoc_client(struct device *dev,
+						struct esoc_desc *esoc_desc)
+{
+	return;
+}
+static inline int esoc_register_client_notifier(struct notifier_block *nb)
+{
+	return -EIO;
+}
+#endif
+#endif
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild
index 6fff0484f7be..8639f651bc9d 100644
--- a/include/uapi/linux/Kbuild
+++ b/include/uapi/linux/Kbuild
@@ -115,6 +115,7 @@ header-y += elf.h
 header-y += epm_adc.h
 header-y += errno.h
 header-y += errqueue.h
+header-y += esoc_ctrl.h
 header-y += ethtool.h
 header-y += eventpoll.h
 header-y += fadvise.h
diff --git a/include/uapi/linux/esoc_ctrl.h b/include/uapi/linux/esoc_ctrl.h
new file mode 100644
index 000000000000..1e70483e7352
--- /dev/null
+++ b/include/uapi/linux/esoc_ctrl.h
@@ -0,0 +1,73 @@
+#ifndef _UAPI_ESOC_CTRL_H_
+#define _UAPI_ESOC_CTRL_H_
+
+#define ESOC_CODE		0xCC
+
+#define ESOC_CMD_EXE		_IOW(ESOC_CODE, 1, u32)
+#define ESOC_WAIT_FOR_REQ	_IOR(ESOC_CODE, 2, u32)
+#define ESOC_NOTIFY		_IOW(ESOC_CODE, 3, u32)
+#define ESOC_GET_STATUS		_IOR(ESOC_CODE, 4, u32)
+#define ESOC_WAIT_FOR_CRASH	_IOR(ESOC_CODE, 6, u32)
+#define ESOC_REG_REQ_ENG	_IO(ESOC_CODE, 7)
+#define ESOC_REG_CMD_ENG	_IO(ESOC_CODE, 8)
+
+/*Link types for communication with external SOCs*/
+#define HSIC		"HSIC"
+#define HSICPCIe	"HSIC+PCIe"
+#define PCIe		"PCIe"
+
+enum esoc_evt {
+	ESOC_RUN_STATE = 0x1,
+	ESOC_UNEXPECTED_RESET,
+	ESOC_ERR_FATAL,
+	ESOC_IN_DEBUG,
+	ESOC_REQ_ENG_ON,
+	ESOC_REQ_ENG_OFF,
+	ESOC_CMD_ENG_ON,
+	ESOC_CMD_ENG_OFF,
+	ESOC_INVALID_STATE,
+};
+
+enum esoc_cmd {
+	ESOC_PWR_ON = 1,
+	ESOC_PWR_OFF,
+	ESOC_FORCE_PWR_OFF,
+	ESOC_RESET,
+	ESOC_PREPARE_DEBUG,
+	ESOC_EXE_DEBUG,
+	ESOC_EXIT_DEBUG,
+};
+
+enum esoc_notify {
+	ESOC_IMG_XFER_DONE = 1,
+	ESOC_BOOT_DONE,
+	ESOC_BOOT_FAIL,
+	ESOC_IMG_XFER_RETRY,
+	ESOC_IMG_XFER_FAIL,
+	ESOC_UPGRADE_AVAILABLE,
+	ESOC_DEBUG_DONE,
+	ESOC_DEBUG_FAIL,
+	ESOC_PRIMARY_CRASH,
+	ESOC_PRIMARY_REBOOT,
+};
+
+enum esoc_req {
+	ESOC_REQ_IMG = 1,
+	ESOC_REQ_DEBUG,
+	ESOC_REQ_SHUTDOWN,
+};
+
+#ifdef __KERNEL__
+/**
+ * struct esoc_handle: Handle for clients of esoc
+ * @name: name of the external soc.
+ * @link: link of external soc.
+ * @id: id of external soc.
+ */
+struct esoc_handle {
+	const char *name;
+	const char *link;
+	unsigned int id;
+};
+#endif
+#endif