linux-kernel - [PATCH 6/7] platform/x86/intel/tpmi: ADD tpmi external interface for tpmi feature drivers

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Date:   Wed,  1 Feb 2023 17:07:37 -0800
From:   Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     hdegoede@...hat.com, markgross@...nel.org
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH 6/7] platform/x86/intel/tpmi: ADD tpmi external interface for tpmi feature drivers

Add interface to get resources and platform data. This will avoid code
duplication. These interfaces includes:
- Get resource count
- Get resource at an index

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/platform/x86/intel/tpmi.c | 22 ++++++++++++++++++++++
 include/linux/intel_tpmi.h        |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
index e612da579b29..c60733261c89 100644
--- a/drivers/platform/x86/intel/tpmi.c
+++ b/drivers/platform/x86/intel/tpmi.c
@@ -153,6 +153,28 @@ struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *aux
 }
 EXPORT_SYMBOL_NS_GPL(tpmi_get_platform_data, INTEL_TPMI);
 
+int tpmi_get_resource_count(struct auxiliary_device *auxdev)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev)
+		return vsec_dev->num_resources;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_count, INTEL_TPMI);
+
+struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index)
+{
+	struct intel_vsec_device *vsec_dev = auxdev_to_ivdev(auxdev);
+
+	if (vsec_dev && index < vsec_dev->num_resources)
+		return &vsec_dev->resource[index];
+
+	return NULL;
+}
+EXPORT_SYMBOL_NS_GPL(tpmi_get_resource_at_index, INTEL_TPMI);
+
 static const char *intel_tpmi_name(enum intel_tpmi_id id)
 {
 	switch (id) {
diff --git a/include/linux/intel_tpmi.h b/include/linux/intel_tpmi.h
index 5b665320ecb4..f505788c05da 100644
--- a/include/linux/intel_tpmi.h
+++ b/include/linux/intel_tpmi.h
@@ -24,5 +24,7 @@ struct intel_tpmi_plat_info {
 };
 
 struct intel_tpmi_plat_info *tpmi_get_platform_data(struct auxiliary_device *auxdev);
+struct resource *tpmi_get_resource_at_index(struct auxiliary_device *auxdev, int index);
+int tpmi_get_resource_count(struct auxiliary_device *auxdev);
 
 #endif
-- 
2.31.1