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msm: scm: Add API to query for service/command availability.

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Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
This commit is contained in:
Saravana Kannan
2011-09-07 19:57:06 -07:00
committed by Bryan Huntsman
parent bcef77324e
commit 988feaf8de
2 changed files with 21 additions and 3 deletions
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2
arch/arm/mach-msm/include/mach/scm.h
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@@ -17,6 +17,7 @@
#define SCM_SVC_UTIL 0x3
#define SCM_SVC_TZ 0x4
#define SCM_SVC_IO 0x5
#define SCM_SVC_INFO 0x6
#define SCM_SVC_TZSCHEDULER 0xFC
extern int scm_call(u32 svc_id, u32 cmd_id, const void *cmd_buf, size_t cmd_len,
@@ -28,5 +29,6 @@ extern u32 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

16
arch/arm/mach-msm/scm.c
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@@ -366,6 +366,22 @@ u32 scm_get_version(void)
}
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);
static int scm_init(void)
{
u32 ctr;