drm/amd/display: Move dc_link interface to separate header

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 208 insertions, 174 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 170cdcb5a027..5c509707ccd6 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -653,171 +653,7 @@ struct dpcd_caps {
 	bool dpcd_display_control_capable;
 };
 
-struct dc_link_status {
-	struct dpcd_caps *dpcd_caps;
-};
-
-/* DP MST stream allocation (payload bandwidth number) */
-struct link_mst_stream_allocation {
-	/* DIG front */
-	const struct stream_encoder *stream_enc;
-	/* associate DRM payload table with DC stream encoder */
-	uint8_t vcp_id;
-	/* number of slots required for the DP stream in transport packet */
-	uint8_t slot_count;
-};
-
-/* DP MST stream allocation table */
-struct link_mst_stream_allocation_table {
-	/* number of DP video streams */
-	int stream_count;
-	/* array of stream allocations */
-	struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
-};
-
-/*
- * A link contains one or more sinks and their connected status.
- * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
- */
-struct dc_link {
-	struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
-	unsigned int sink_count;
-	struct dc_sink *local_sink;
-	unsigned int link_index;
-	enum dc_connection_type type;
-	enum signal_type connector_signal;
-	enum dc_irq_source irq_source_hpd;
-	enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse  */
-	/* caps is the same as reported_link_cap. link_traing use
-	 * reported_link_cap. Will clean up.  TODO
-	 */
-	struct dc_link_settings reported_link_cap;
-	struct dc_link_settings verified_link_cap;
-	struct dc_link_settings cur_link_settings;
-	struct dc_lane_settings cur_lane_setting;
-	struct dc_link_settings preferred_link_setting;
-
-	uint8_t ddc_hw_inst;
-
-	uint8_t hpd_src;
-
-	uint8_t link_enc_hw_inst;
-
-	bool test_pattern_enabled;
-	union compliance_test_state compliance_test_state;
-
-	void *priv;
-
-	struct ddc_service *ddc;
-
-	bool aux_mode;
-
-	/* Private to DC core */
-
-	const struct dc *dc;
-
-	struct dc_context *ctx;
-
-	struct link_encoder *link_enc;
-	struct graphics_object_id link_id;
-	union ddi_channel_mapping ddi_channel_mapping;
-	struct connector_device_tag_info device_tag;
-	struct dpcd_caps dpcd_caps;
-	unsigned short chip_caps;
-	unsigned int dpcd_sink_count;
-	enum edp_revision edp_revision;
-	bool psr_enabled;
-
-	/* MST record stream using this link */
-	struct link_flags {
-		bool dp_keep_receiver_powered;
-	} wa_flags;
-	struct link_mst_stream_allocation_table mst_stream_alloc_table;
-
-	struct dc_link_status link_status;
-
-};
-
-const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
-
-/*
- * Return an enumerated dc_link.  dc_link order is constant and determined at
- * boot time.  They cannot be created or destroyed.
- * Use dc_get_caps() to get number of links.
- */
-static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
-{
-	return dc->links[link_index];
-}
-
-/* Set backlight level of an embedded panel (eDP, LVDS). */
-bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t level,
-		uint32_t frame_ramp, const struct dc_stream_state *stream);
-
-bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable, bool wait);
-
-bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);
-
-bool dc_link_setup_psr(struct dc_link *dc_link,
-		const struct dc_stream_state *stream, struct psr_config *psr_config,
-		struct psr_context *psr_context);
-
-/* Request DC to detect if there is a Panel connected.
- * boot - If this call is during initial boot.
- * Return false for any type of detection failure or MST detection
- * true otherwise. True meaning further action is required (status update
- * and OS notification).
- */
-enum dc_detect_reason {
-	DETECT_REASON_BOOT,
-	DETECT_REASON_HPD,
-	DETECT_REASON_HPDRX,
-};
-
-bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);
-
-/* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
- * Return:
- * true - Downstream port status changed. DM should call DC to do the
- * detection.
- * false - no change in Downstream port status. No further action required
- * from DM. */
-bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
-		union hpd_irq_data *hpd_irq_dpcd_data);
-
-struct dc_sink_init_data;
-
-struct dc_sink *dc_link_add_remote_sink(
-		struct dc_link *dc_link,
-		const uint8_t *edid,
-		int len,
-		struct dc_sink_init_data *init_data);
-
-void dc_link_remove_remote_sink(
-	struct dc_link *link,
-	struct dc_sink *sink);
-
-/* Used by diagnostics for virtual link at the moment */
-
-void dc_link_dp_set_drive_settings(
-	struct dc_link *link,
-	struct link_training_settings *lt_settings);
-
-enum link_training_result dc_link_dp_perform_link_training(
-	struct dc_link *link,
-	const struct dc_link_settings *link_setting,
-	bool skip_video_pattern);
-
-void dc_link_dp_enable_hpd(const struct dc_link *link);
-
-void dc_link_dp_disable_hpd(const struct dc_link *link);
-
-bool dc_link_dp_set_test_pattern(
-	struct dc_link *link,
-	enum dp_test_pattern test_pattern,
-	const struct link_training_settings *p_link_settings,
-	const unsigned char *p_custom_pattern,
-	unsigned int cust_pattern_size);
+#include "dc_link.h"
 
 /*******************************************************************************
  * Sink Interfaces - A sink corresponds to a display output device
@@ -897,13 +733,4 @@ void dc_set_power_state(
 		enum dc_acpi_cm_power_state power_state);
 void dc_resume(struct dc *dc);
 
-/*
- * DPCD access interfaces
- */
-
-bool dc_submit_i2c(
-		struct dc *dc,
-		uint32_t link_index,
-		struct i2c_command *cmd);
-
 #endif /* DC_INTERFACE_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
new file mode 100644
index 000000000000..f11a734da1db
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -0,0 +1,207 @@
+/*
+ * Copyright 2012-14 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_LINK_H_
+#define DC_LINK_H_
+
+#include "dc_types.h"
+#include "grph_object_defs.h"
+
+struct dc_link_status {
+	struct dpcd_caps *dpcd_caps;
+};
+
+/* DP MST stream allocation (payload bandwidth number) */
+struct link_mst_stream_allocation {
+	/* DIG front */
+	const struct stream_encoder *stream_enc;
+	/* associate DRM payload table with DC stream encoder */
+	uint8_t vcp_id;
+	/* number of slots required for the DP stream in transport packet */
+	uint8_t slot_count;
+};
+
+/* DP MST stream allocation table */
+struct link_mst_stream_allocation_table {
+	/* number of DP video streams */
+	int stream_count;
+	/* array of stream allocations */
+	struct link_mst_stream_allocation stream_allocations[MAX_CONTROLLER_NUM];
+};
+
+/*
+ * A link contains one or more sinks and their connected status.
+ * The currently active signal type (HDMI, DP-SST, DP-MST) is also reported.
+ */
+struct dc_link {
+	struct dc_sink *remote_sinks[MAX_SINKS_PER_LINK];
+	unsigned int sink_count;
+	struct dc_sink *local_sink;
+	unsigned int link_index;
+	enum dc_connection_type type;
+	enum signal_type connector_signal;
+	enum dc_irq_source irq_source_hpd;
+	enum dc_irq_source irq_source_hpd_rx;/* aka DP Short Pulse  */
+	/* caps is the same as reported_link_cap. link_traing use
+	 * reported_link_cap. Will clean up.  TODO
+	 */
+	struct dc_link_settings reported_link_cap;
+	struct dc_link_settings verified_link_cap;
+	struct dc_link_settings cur_link_settings;
+	struct dc_lane_settings cur_lane_setting;
+	struct dc_link_settings preferred_link_setting;
+
+	uint8_t ddc_hw_inst;
+
+	uint8_t hpd_src;
+
+	uint8_t link_enc_hw_inst;
+
+	bool test_pattern_enabled;
+	union compliance_test_state compliance_test_state;
+
+	void *priv;
+
+	struct ddc_service *ddc;
+
+	bool aux_mode;
+
+	/* Private to DC core */
+
+	const struct dc *dc;
+
+	struct dc_context *ctx;
+
+	struct link_encoder *link_enc;
+	struct graphics_object_id link_id;
+	union ddi_channel_mapping ddi_channel_mapping;
+	struct connector_device_tag_info device_tag;
+	struct dpcd_caps dpcd_caps;
+	unsigned short chip_caps;
+	unsigned int dpcd_sink_count;
+	enum edp_revision edp_revision;
+	bool psr_enabled;
+
+	/* MST record stream using this link */
+	struct link_flags {
+		bool dp_keep_receiver_powered;
+	} wa_flags;
+	struct link_mst_stream_allocation_table mst_stream_alloc_table;
+
+	struct dc_link_status link_status;
+
+};
+
+const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);
+
+/*
+ * Return an enumerated dc_link.  dc_link order is constant and determined at
+ * boot time.  They cannot be created or destroyed.
+ * Use dc_get_caps() to get number of links.
+ */
+static inline struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index)
+{
+	return dc->links[link_index];
+}
+
+/* Set backlight level of an embedded panel (eDP, LVDS). */
+bool dc_link_set_backlight_level(const struct dc_link *dc_link, uint32_t level,
+		uint32_t frame_ramp, const struct dc_stream_state *stream);
+
+bool dc_link_set_psr_enable(const struct dc_link *dc_link, bool enable, bool wait);
+
+bool dc_link_get_psr_state(const struct dc_link *dc_link, uint32_t *psr_state);
+
+bool dc_link_setup_psr(struct dc_link *dc_link,
+		const struct dc_stream_state *stream, struct psr_config *psr_config,
+		struct psr_context *psr_context);
+
+/* Request DC to detect if there is a Panel connected.
+ * boot - If this call is during initial boot.
+ * Return false for any type of detection failure or MST detection
+ * true otherwise. True meaning further action is required (status update
+ * and OS notification).
+ */
+enum dc_detect_reason {
+	DETECT_REASON_BOOT,
+	DETECT_REASON_HPD,
+	DETECT_REASON_HPDRX,
+};
+
+bool dc_link_detect(struct dc_link *dc_link, enum dc_detect_reason reason);
+
+/* Notify DC about DP RX Interrupt (aka Short Pulse Interrupt).
+ * Return:
+ * true - Downstream port status changed. DM should call DC to do the
+ * detection.
+ * false - no change in Downstream port status. No further action required
+ * from DM. */
+bool dc_link_handle_hpd_rx_irq(struct dc_link *dc_link,
+		union hpd_irq_data *hpd_irq_dpcd_data);
+
+struct dc_sink_init_data;
+
+struct dc_sink *dc_link_add_remote_sink(
+		struct dc_link *dc_link,
+		const uint8_t *edid,
+		int len,
+		struct dc_sink_init_data *init_data);
+
+void dc_link_remove_remote_sink(
+	struct dc_link *link,
+	struct dc_sink *sink);
+
+/* Used by diagnostics for virtual link at the moment */
+
+void dc_link_dp_set_drive_settings(
+	struct dc_link *link,
+	struct link_training_settings *lt_settings);
+
+enum link_training_result dc_link_dp_perform_link_training(
+	struct dc_link *link,
+	const struct dc_link_settings *link_setting,
+	bool skip_video_pattern);
+
+void dc_link_dp_enable_hpd(const struct dc_link *link);
+
+void dc_link_dp_disable_hpd(const struct dc_link *link);
+
+bool dc_link_dp_set_test_pattern(
+	struct dc_link *link,
+	enum dp_test_pattern test_pattern,
+	const struct link_training_settings *p_link_settings,
+	const unsigned char *p_custom_pattern,
+	unsigned int cust_pattern_size);
+
+/*
+ * DPCD access interfaces
+ */
+
+bool dc_submit_i2c(
+		struct dc *dc,
+		uint32_t link_index,
+		struct i2c_command *cmd);
+
+#endif /* DC_LINK_H_ */