2 files changed, 48 insertions, 0 deletions

diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index 1e1057638e98..5162c02f5f88 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -559,6 +559,40 @@ static void qcom_scm_set_download_mode(u32 dload_mode)
 }
 
 /**
+ * devm_qcom_scm_pas_context_alloc() - Allocate peripheral authentication service
+ *				       context for a given peripheral
+ *
+ * PAS context is device-resource managed, so the caller does not need
+ * to worry about freeing the context memory.
+ *
+ * @dev:	  PAS firmware device
+ * @pas_id:	  peripheral authentication service id
+ * @mem_phys:	  Subsystem reserve memory start address
+ * @mem_size:	  Subsystem reserve memory size
+ *
+ * Returns: The new PAS context, or ERR_PTR() on failure.
+ */
+struct qcom_scm_pas_context *devm_qcom_scm_pas_context_alloc(struct device *dev,
+							     u32 pas_id,
+							     phys_addr_t mem_phys,
+							     size_t mem_size)
+{
+	struct qcom_scm_pas_context *ctx;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return ERR_PTR(-ENOMEM);
+
+	ctx->dev = dev;
+	ctx->pas_id = pas_id;
+	ctx->mem_phys = mem_phys;
+	ctx->mem_size = mem_size;
+
+	return ctx;
+}
+EXPORT_SYMBOL_GPL(devm_qcom_scm_pas_context_alloc);
+
+/**
  * qcom_scm_pas_init_image() - Initialize peripheral authentication service
  *			       state machine for a given peripheral, using the
  *			       metadata
diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h
index a13f703b16cd..5045f8fe876d 100644
--- a/include/linux/firmware/qcom/qcom_scm.h
+++ b/include/linux/firmware/qcom/qcom_scm.h
@@ -72,6 +72,20 @@ struct qcom_scm_pas_metadata {
 	ssize_t size;
 };
 
+struct qcom_scm_pas_context {
+	struct device *dev;
+	u32 pas_id;
+	phys_addr_t mem_phys;
+	size_t mem_size;
+	void *ptr;
+	dma_addr_t phys;
+	ssize_t size;
+};
+
+struct qcom_scm_pas_context *devm_qcom_scm_pas_context_alloc(struct device *dev,
+							     u32 pas_id,
+							     phys_addr_t mem_phys,
+							     size_t mem_size);
 int qcom_scm_pas_init_image(u32 pas_id, const void *metadata, size_t size,
 			    struct qcom_scm_pas_metadata *ctx);
 void qcom_scm_pas_metadata_release(struct qcom_scm_pas_metadata *ctx);