From: Saravana Kannan <skannan@xxxxxxxxxxxxxx>
Some drivers may need to query the secure environment about the
availability of a particular service/command. Add support for
this.
Signed-off-by: Saravana Kannan <skannan@xxxxxxxxxxxxxx>
[sboyd@xxxxxxxxxxxxxx: Add some commit text]
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
---
arch/arm/mach-qcom/scm.c | 18 +++++++++++++++++-
arch/arm/mach-qcom/scm.h | 2 ++
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-qcom/scm.c b/arch/arm/mach-qcom/scm.c
index a05cad3fa1c5..e80571f57ca4 100644
--- a/arch/arm/mach-qcom/scm.c
+++ b/arch/arm/mach-qcom/scm.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2010-2014, 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
@@ -394,3 +394,19 @@ u32 scm_get_version(void)
return version;
}
EXPORT_SYMBOL(scm_get_version);
+
+#define IS_CALL_AVAIL_CMD 1
+int scm_is_call_available(u32 svc_id, u32 cmd_id)
+{
+ int ret;
+ u32 svc_cmd = (svc_id << 10) | cmd_id;
+ u32 ret_val = 0;
+
+ ret = scm_call(SCM_SVC_INFO, IS_CALL_AVAIL_CMD, &svc_cmd,
+ sizeof(svc_cmd), &ret_val, sizeof(ret_val));
+ if (ret)
+ return ret;
+
+ return ret_val;
+}
+EXPORT_SYMBOL(scm_is_call_available);
diff --git a/arch/arm/mach-qcom/scm.h b/arch/arm/mach-qcom/scm.h
index 1f0f0180e767..f94c7279616a 100644
--- a/arch/arm/mach-qcom/scm.h
+++ b/arch/arm/mach-qcom/scm.h
@@ -14,6 +14,7 @@
#define SCM_SVC_BOOT 0x1
#define SCM_SVC_PIL 0x2
+#define SCM_SVC_INFO 0x6
extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
void *resp_buf, size_t resp_len);
@@ -24,5 +25,6 @@ extern s32 scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2);
#define SCM_VERSION(major, minor) (((major) << 16) | ((minor) & 0xFF))
extern u32 scm_get_version(void);
+extern int scm_is_call_available(u32 svc_id, u32 cmd_id);
#endif
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
