drm/amd/display: refactor vpg.h

why and how:
as part of cleanup, need to refactor vpg. It was improperly referenced
as a dcn specfic part of link. the dcn agnostic code needed was ripped out
and put into vpg.h, now in dc/inc/hw.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Parandhaman K <parandhaman.k@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.h

@@ -26,6 +26,7 @@
 #ifndef __DAL_DCN30_VPG_H__
 #define __DAL_DCN30_VPG_H__
 
+#include "vpg.h"
 
 #define DCN30_VPG_FROM_VPG(vpg)\
 	container_of(vpg, struct dcn30_vpg, base)
@@ -132,28 +133,6 @@ struct dcn30_vpg_mask {
 	VPG_DCN3_REG_FIELD_LIST(uint32_t);
 };
 
-struct vpg;
-
-struct vpg_funcs {
-	void (*update_generic_info_packet)(
-		struct vpg *vpg,
-		uint32_t packet_index,
-		const struct dc_info_packet *info_packet,
-		bool immediate_update);
-
-	void (*vpg_poweron)(
-		struct vpg *vpg);
-
-	void (*vpg_powerdown)(
-		struct vpg *vpg);
-};
-
-struct vpg {
-	const struct vpg_funcs *funcs;
-	struct dc_context *ctx;
-	int inst;
-};
-
 struct dcn30_vpg {
 	struct vpg base;
 	const struct dcn30_vpg_registers *regs;

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_vpg.h

@@ -26,6 +26,7 @@
 #ifndef __DAL_DCN31_VPG_H__
 #define __DAL_DCN31_VPG_H__
 
+#include "vpg.h"
 
 #define DCN31_VPG_FROM_VPG(vpg)\
 	container_of(vpg, struct dcn31_vpg, base)

drivers/gpu/drm/amd/display/dc/inc/hw/vpg.h

+/*
+ * Copyright 2024 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ */
+
+#ifndef __DC_VPG_H__
+#define __DC_VPG_H__
+
+struct dc_context;
+struct dc_info_packet;
+
+struct vpg;
+
+struct vpg_funcs {
+	void (*update_generic_info_packet)(
+		struct vpg *vpg,
+		uint32_t packet_index,
+		const struct dc_info_packet *info_packet,
+		bool immediate_update);
+
+	void (*vpg_poweron)(
+		struct vpg *vpg);
+
+	void (*vpg_powerdown)(
+		struct vpg *vpg);
+};
+
+struct vpg {
+	const struct vpg_funcs *funcs;
+	struct dc_context *ctx;
+	int inst;
+};
+
+#endif /* DC_INC_VPG_H_ */
\ No newline at end of file

drivers/gpu/drm/amd/display/dc/link/link_dpms.c

@@ -55,6 +55,8 @@
 #include "dccg.h"
 #include "clk_mgr.h"
 #include "atomfirmware.h"
+#include "vpg.h"
+
 #define DC_LOGGER \
 	dc_logger
 #define DC_LOGGER_INIT(logger) \
@@ -67,7 +69,6 @@
 #define RETIMER_REDRIVER_INFO(...) \
 	DC_LOG_RETIMER_REDRIVER(  \
 		__VA_ARGS__)
-#include "dc/dcn30/dcn30_vpg.h"
 
 #define MAX_MTP_SLOT_COUNT 64
 #define LINK_TRAINING_ATTEMPTS 4