linux-kernel - [PATCH v4 36/38] platform/x86: intel_telemetry: Add telemetry_get

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Message-Id: <20200121160114.60007-37-mika.westerberg@linux.intel.com>
Date:   Tue, 21 Jan 2020 19:01:12 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Darren Hart <dvhart@...radead.org>,
        Lee Jones <lee.jones@...aro.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Zha Qipeng <qipeng.zha@...el.com>,
        "David E . Box" <david.e.box@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Mark Brown <broonie@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v4 36/38] platform/x86: intel_telemetry: Add telemetry_get_pltdata()

Add new function that allows telemetry modules to get pointer to the
platform specific configuration. This is needed to allow the telemetry
debugfs module to fetch PMC IPC instance in the subsequent patch.

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
 arch/x86/include/asm/intel_telemetry.h      |  1 +
 drivers/platform/x86/intel_telemetry_core.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/arch/x86/include/asm/intel_telemetry.h b/arch/x86/include/asm/intel_telemetry.h
index e19deb776003..1335565c43b5 100644
--- a/arch/x86/include/asm/intel_telemetry.h
+++ b/arch/x86/include/asm/intel_telemetry.h
@@ -99,6 +99,7 @@ int telemetry_set_pltdata(const struct telemetry_core_ops *ops,
 int telemetry_clear_pltdata(void);
 
 int telemetry_pltconfig_valid(void);
+struct telemetry_plt_config *telemetry_get_pltdata(void);
 
 int telemetry_get_evtname(enum telemetry_unit telem_unit,
 			  const char **name, int len);
diff --git a/drivers/platform/x86/intel_telemetry_core.c b/drivers/platform/x86/intel_telemetry_core.c
index d4040bb222b4..e11b79d1b3a7 100644
--- a/drivers/platform/x86/intel_telemetry_core.c
+++ b/drivers/platform/x86/intel_telemetry_core.c
@@ -369,6 +369,18 @@ int telemetry_pltconfig_valid(void)
 }
 EXPORT_SYMBOL_GPL(telemetry_pltconfig_valid);
 
+/**
+ * telemetry_get_pltdata() - Return telemetry platform config
+ *
+ * May be used by other telemetry modules to get platform specific
+ * configuration.
+ */
+struct telemetry_plt_config *telemetry_get_pltdata(void)
+{
+	return telm_core_conf.plt_config;
+}
+EXPORT_SYMBOL_GPL(telemetry_get_pltdata);
+
 static inline int telemetry_get_pssevtname(enum telemetry_unit telem_unit,
 					   const char **name, int len)
 {
-- 
2.24.1