net: ipa: combine resource type definitions

Combine the ipa_resource_type_src and ipa_resource_type_dst
enumerated types into a single enumerated type, ipa_resource_type.

Assign value 0 to the first element for the source and destination
types, so their numeric values are preserved.  Add some additional
commentary where these are defined, stating explicitly that code
assumes the first source and first destination member must have
numeric value 0.

Fix the kerneldoc comments for the ipa_gsi_endpoint_data structure.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipa/ipa_data.h

 /* SPDX-License-Identifier: GPL-2.0 */
 
 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
- * Copyright (C) 2019-2020 Linaro Ltd.
+ * Copyright (C) 2019-2021 Linaro Ltd.
  */
 #ifndef _IPA_DATA_H_
 #define _IPA_DATA_H_
@@ -177,12 +177,12 @@ struct ipa_endpoint_data {
 
 /**
  * struct ipa_gsi_endpoint_data - GSI channel/IPA endpoint data
- * ee:		GSI execution environment ID
- * channel_id:	GSI channel ID
- * endpoint_id:	IPA endpoint ID
- * toward_ipa:	direction of data transfer
- * gsi:		GSI channel configuration data (see above)
- * ipa:		IPA endpoint configuration data (see above)
+ * @ee_id:	GSI execution environment ID
+ * @channel_id:	GSI channel ID
+ * @endpoint_id: IPA endpoint ID
+ * @toward_ipa:	direction of data transfer
+ * @channel:	GSI channel configuration data (see above)
+ * @endpoint:	IPA endpoint configuration data (see above)
  */
 struct ipa_gsi_endpoint_data {
 	u8 ee_id;		/* enum gsi_ee_id */
@@ -194,18 +194,17 @@ struct ipa_gsi_endpoint_data {
 	struct ipa_endpoint_data endpoint;
 };
 
-/** enum ipa_resource_type_src - source resource types */
-enum ipa_resource_type_src {
-	IPA_RESOURCE_TYPE_SRC_PKT_CONTEXTS,
+/** enum ipa_resource_type - IPA resource types */
+enum ipa_resource_type {
+	/* Source resource types; first must have value 0 */
+	IPA_RESOURCE_TYPE_SRC_PKT_CONTEXTS		= 0,
 	IPA_RESOURCE_TYPE_SRC_DESCRIPTOR_LISTS,
 	IPA_RESOURCE_TYPE_SRC_DESCRIPTOR_BUFF,
 	IPA_RESOURCE_TYPE_SRC_HPS_DMARS,
 	IPA_RESOURCE_TYPE_SRC_ACK_ENTRIES,
-};
 
-/** enum ipa_resource_type_dst - destination resource types */
-enum ipa_resource_type_dst {
-	IPA_RESOURCE_TYPE_DST_DATA_SECTORS,
+	/* Destination resource types; first must have value 0 */
+	IPA_RESOURCE_TYPE_DST_DATA_SECTORS		= 0,
 	IPA_RESOURCE_TYPE_DST_DPS_DMARS,
 };
 
@@ -225,7 +224,7 @@ struct ipa_resource_limits {
  * @limits:	array of limits to use for each resource group
  */
 struct ipa_resource_src {
-	enum ipa_resource_type_src type;
+	enum ipa_resource_type type;	/* IPA_RESOURCE_TYPE_SRC_* */
 	struct ipa_resource_limits limits[IPA_RESOURCE_GROUP_SRC_MAX];
 };
 
@@ -235,7 +234,7 @@ struct ipa_resource_src {
  * @limits:	array of limits to use for each resource group
  */
 struct ipa_resource_dst {
-	enum ipa_resource_type_dst type;
+	enum ipa_resource_type type;	/* IPA_RESOURCE_TYPE_DST_* */
 	struct ipa_resource_limits limits[IPA_RESOURCE_GROUP_DST_MAX];
 };