[PATCH 6/8] msm: scm: Add a feat version query API
From: Stephen Boyd <hidden>
Date: 2014-08-05 01:33:33
Also in:
linux-arm-msm, lkml
Subsystem:
arm port, arm/qualcomm mailing list, arm/qualcomm support, the rest · Maintainers:
Russell King, Bjorn Andersson, Konrad Dybcio, Linus Torvalds
Some users of SCM need to detect features and also detect if those features have certain versions available. Add this API. Signed-off-by: Stephen Boyd <redacted> --- arch/arm/mach-qcom/scm.c | 13 +++++++++++++ arch/arm/mach-qcom/scm.h | 1 + 2 files changed, 14 insertions(+)
diff --git a/arch/arm/mach-qcom/scm.c b/arch/arm/mach-qcom/scm.c
index e80571f57ca4..7c62c03324f4 100644
--- a/arch/arm/mach-qcom/scm.c
+++ b/arch/arm/mach-qcom/scm.c@@ -410,3 +410,16 @@ int scm_is_call_available(u32 svc_id, u32 cmd_id) return ret_val; } EXPORT_SYMBOL(scm_is_call_available); + +#define GET_FEAT_VERSION_CMD 3 +int scm_get_feat_version(u32 feat) +{ + if (scm_is_call_available(SCM_SVC_INFO, GET_FEAT_VERSION_CMD)) { + u32 version; + if (!scm_call(SCM_SVC_INFO, GET_FEAT_VERSION_CMD, &feat, + sizeof(feat), &version, sizeof(version))) + return version; + } + return 0; +} +EXPORT_SYMBOL(scm_get_feat_version);
diff --git a/arch/arm/mach-qcom/scm.h b/arch/arm/mach-qcom/scm.h
index f94c7279616a..6348b08524e7 100644
--- a/arch/arm/mach-qcom/scm.h
+++ b/arch/arm/mach-qcom/scm.h@@ -26,5 +26,6 @@ extern s32 scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2); extern u32 scm_get_version(void); extern int scm_is_call_available(u32 svc_id, u32 cmd_id); +extern int scm_get_feat_version(u32 feat); #endif
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