msm: hsic_sysmon: Add system monitor HSIC bridge
This driver is used to communicate with the system monitor
interface of an external modem device connected via HSIC. A simple
API consisting of open/close/read/write functions is provided to
send and receive data to and from a remote system monitor.
CRs-fixed: 349727
Change-Id: I84a81ec1cdb3dae705200907f8805da70afe58ee
Signed-off-by: Jack Pham <jackp@codeaurora.org>
diff --git a/arch/arm/mach-msm/hsic_sysmon.h b/arch/arm/mach-msm/hsic_sysmon.h
new file mode 100644
index 0000000..aa57b93
--- /dev/null
+++ b/arch/arm/mach-msm/hsic_sysmon.h
@@ -0,0 +1,56 @@
+/* Copyright (c) 2012, Code Aurora Forum. 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 __HSIC_SYSMON_H__
+#define __HSIC_SYSMON_H__
+
+/**
+ * enum hsic_sysmon_device_id - Supported HSIC subsystem devices
+ */
+enum hsic_sysmon_device_id {
+ HSIC_SYSMON_DEV_EXT_MODEM,
+ NUM_HSIC_SYSMON_DEVS
+};
+
+#if defined(CONFIG_MSM_HSIC_SYSMON) || defined(CONFIG_MSM_HSIC_SYSMON_MODULE)
+
+extern int hsic_sysmon_open(enum hsic_sysmon_device_id id);
+extern void hsic_sysmon_close(enum hsic_sysmon_device_id id);
+extern int hsic_sysmon_read(enum hsic_sysmon_device_id id, char *data,
+ size_t len, size_t *actual_len, int timeout);
+extern int hsic_sysmon_write(enum hsic_sysmon_device_id id, const char *data,
+ size_t len, int timeout);
+
+#else /* CONFIG_MSM_HSIC_SYSMON || CONFIG_MSM_HSIC_SYSMON_MODULE */
+
+static inline int hsic_sysmon_open(enum hsic_sysmon_device_id id)
+{
+ return -ENODEV;
+}
+
+static inline void hsic_sysmon_close(enum hsic_sysmon_device_id id) { }
+
+static inline int hsic_sysmon_read(enum hsic_sysmon_device_id id, char *data,
+ size_t len, size_t *actual_len, int timeout)
+{
+ return -ENODEV;
+}
+
+static inline int hsic_sysmon_write(enum hsic_sysmon_device_id id,
+ const char *data, size_t len, int timeout)
+{
+ return -ENODEV;
+}
+
+#endif /* CONFIG_MSM_HSIC_SYSMON || CONFIG_MSM_HSIC_SYSMON_MODULE */
+
+#endif /* __HSIC_SYSMON_H__ */