qcacld-3.0: Add api to get smmu domain

Add api to get smmu domain from platform driver.

Change-Id: I71efe1a770c8c73f17ffe574555aa9c3b3595819

core/pld/inc/pld_common.h

@@ -616,7 +616,11 @@ int pld_athdiag_read(struct device *dev, uint32_t offset, uint32_t memtype,
 		     uint32_t datalen, uint8_t *output);
 int pld_athdiag_write(struct device *dev, uint32_t offset, uint32_t memtype,
 		      uint32_t datalen, uint8_t *input);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
+void *pld_smmu_get_domain(struct device *dev);
+#else
 void *pld_smmu_get_mapping(struct device *dev);
+#endif
 int pld_smmu_map(struct device *dev, phys_addr_t paddr,
 		 uint32_t *iova_addr, size_t size);
 int pld_get_user_msi_assignment(struct device *dev, char *user_name,

core/pld/src/pld_common.c

@@ -1398,6 +1398,30 @@ int pld_athdiag_write(struct device *dev, uint32_t offset,
 	return ret;
 }
 
+/**
+ * pld_smmu_get_domain() - Get SMMU domain
+ * @dev: device
+ *
+ * Return: Pointer to the domain
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
+void *pld_smmu_get_domain(struct device *dev)
+{
+	void *ptr = NULL;
+	enum pld_bus_type type = pld_get_bus_type(dev);
+
+	switch (type) {
+	case PLD_BUS_TYPE_SNOC:
+		ptr = pld_snoc_smmu_get_domain(dev);
+		break;
+	default:
+		pr_err("Invalid device type %d\n", type);
+		break;
+	}
+
+	return ptr;
+}
+#else
 /**
  * pld_smmu_get_mapping() - Get SMMU mapping context
  * @dev: device
@@ -1423,6 +1447,7 @@ void *pld_smmu_get_mapping(struct device *dev)
 
 	return ptr;
 }
+#endif
 
 /**
  * pld_smmu_map() - Map SMMU

core/pld/src/pld_snoc.h

@@ -95,10 +95,20 @@ static inline int pld_snoc_athdiag_write(struct device *dev, uint32_t offset,
 {
 	return 0;
 }
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
+static inline void *pld_snoc_smmu_get_domain(struct device *dev)
+{
+	return NULL;
+}
+
+#else
 static inline void *pld_snoc_smmu_get_mapping(struct device *dev)
 {
 	return NULL;
 }
+#endif
+
 static inline int pld_snoc_smmu_map(struct device *dev, phys_addr_t paddr,
 				    uint32_t *iova_addr, size_t size)
 {
@@ -218,10 +228,20 @@ static inline int pld_snoc_athdiag_write(struct device *dev, uint32_t offset,
 {
 	return icnss_athdiag_write(dev, offset, memtype, datalen, input);
 }
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0))
+static inline void *pld_snoc_smmu_get_domain(struct device *dev)
+{
+	return icnss_smmu_get_domain(dev);
+}
+
+#else
 static inline void *pld_snoc_smmu_get_mapping(struct device *dev)
 {
 	return icnss_smmu_get_mapping(dev);
 }
+#endif
+
 static inline int pld_snoc_smmu_map(struct device *dev, phys_addr_t paddr,
 				    uint32_t *iova_addr, size_t size)
 {