drm/amd/display: temporarly move non link_hwss code to dc_link_dp

[why]
Clean up dc_link_hwss file in the preparation of breaking it down to
file for each encoder type. We temporarly move the original dp link
functions in link_hwss back to dc_link_dp. We will break dc_link_dp down
after link_hwss is in good shape.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc_link.h

@@ -465,6 +465,8 @@ void dc_link_get_cur_link_res(const struct dc_link *link,
 void dc_get_cur_link_res_map(const struct dc *dc, uint32_t *map);
 /* restore link resource allocation state from a snapshot */
 void dc_restore_link_res_map(const struct dc *dc, uint32_t *map);
-
 void dc_link_dp_clear_rx_status(struct dc_link *link);
+struct gpio *get_hpd_gpio(struct dc_bios *dcb,
+		struct graphics_object_id link_id,
+		struct gpio_service *gpio_service);
 #endif /* DC_LINK_H_ */

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -55,6 +55,7 @@
 #include "inc/link_dpcd.h"
 #include "dpcd_defs.h"
 #include "inc/link_enc_cfg.h"
+#include "link_hwss.h"
 
 #define DC_LOGGER_INIT(logger)
 

drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h

@@ -218,4 +218,44 @@ bool is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
 
 bool dp_retrieve_lttpr_cap(struct dc_link *link);
 void edp_panel_backlight_power_on(struct dc_link *link);
+void dp_receiver_power_ctrl(struct dc_link *link, bool on);
+void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
+void dp_enable_link_phy(
+	struct dc_link *link,
+	const struct link_resource *link_res,
+	enum signal_type signal,
+	enum clock_source_id clock_source,
+	const struct dc_link_settings *link_settings);
+void edp_add_delay_for_T9(struct dc_link *link);
+bool edp_receiver_ready_T9(struct dc_link *link);
+bool edp_receiver_ready_T7(struct dc_link *link);
+
+void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_res,
+		enum signal_type signal);
+
+void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *link_res,
+		enum signal_type signal);
+
+bool dp_set_hw_training_pattern(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		enum dc_dp_training_pattern pattern,
+		uint32_t offset);
+
+void dp_set_hw_lane_settings(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		const struct link_training_settings *link_settings,
+		uint32_t offset);
+
+void dp_set_hw_test_pattern(
+		struct dc_link *link,
+		const struct link_resource *link_res,
+		enum dp_test_pattern test_pattern,
+		uint8_t *custom_pattern,
+		uint32_t custom_pattern_size);
+
+void dp_retrain_link_dp_test(struct dc_link *link,
+		struct dc_link_settings *link_setting,
+		bool skip_video_pattern);
 #endif /* __DC_LINK_DP_H__ */

drivers/gpu/drm/amd/display/dc/inc/link_dpcd.h

@@ -27,7 +27,7 @@
 #define __LINK_DPCD_H__
 #include <inc/core_status.h>
 #include <dc_link.h>
-#include <inc/link_hwss.h>
+#include <dc_link_dp.h>
 
 enum dc_status core_link_read_dpcd(
 		struct dc_link *link,

drivers/gpu/drm/amd/display/dc/inc/link_hwss.h

@@ -26,56 +26,18 @@
 #ifndef __DC_LINK_HWSS_H__
 #define __DC_LINK_HWSS_H__
 
-struct gpio *get_hpd_gpio(struct dc_bios *dcb,
-		struct graphics_object_id link_id,
-		struct gpio_service *gpio_service);
-
-void dp_enable_link_phy(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum signal_type signal,
-	enum clock_source_id clock_source,
-	const struct dc_link_settings *link_settings);
-
-void dp_receiver_power_ctrl(struct dc_link *link, bool on);
-void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
-void edp_add_delay_for_T9(struct dc_link *link);
-bool edp_receiver_ready_T9(struct dc_link *link);
-bool edp_receiver_ready_T7(struct dc_link *link);
-
-void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal);
-
-void dp_disable_link_phy_mst(struct dc_link *link, const struct link_resource *link_res,
-		enum signal_type signal);
-
-bool dp_set_hw_training_pattern(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum dc_dp_training_pattern pattern,
-	uint32_t offset);
-
-void dp_set_hw_lane_settings(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	const struct link_training_settings *link_settings,
-	uint32_t offset);
-
-void dp_set_hw_test_pattern(
-	struct dc_link *link,
-	const struct link_resource *link_res,
-	enum dp_test_pattern test_pattern,
-	uint8_t *custom_pattern,
-	uint32_t custom_pattern_size);
-
-void dp_retrain_link_dp_test(struct dc_link *link,
-		struct dc_link_settings *link_setting,
-		bool skip_video_pattern);
-
+/* include basic type headers only */
+#include "os_types.h"
+#include "dc_dp_types.h"
+#include "signal_types.h"
+#include "grph_object_id.h"
+#include "fixed31_32.h"
+
+/* forward declare dc core types */
 struct dc_link;
 struct link_resource;
-struct fixed31_32;
 struct pipe_ctx;
+struct encoder_set_dp_phy_pattern_param;
 
 struct link_hwss_ext {
 	/* function pointers below require check for NULL at all time