drm/amd/display: move psr dm interface to separate files

[Why]
Improve the maintain/read abilities of dm code.

[How]
Create amdgpu_dm_psr.c/h files.
Move psr function from amdgpu_dm.c
Signed-off-by: Roman Li <roman.li@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/Makefile

@@ -28,7 +28,7 @@
 AMDGPUDM = amdgpu_dm.o amdgpu_dm_irq.o amdgpu_dm_mst_types.o amdgpu_dm_color.o
 
 ifneq ($(CONFIG_DRM_AMD_DC),)
-AMDGPUDM += amdgpu_dm_services.o amdgpu_dm_helpers.o amdgpu_dm_pp_smu.o
+AMDGPUDM += amdgpu_dm_services.o amdgpu_dm_helpers.o amdgpu_dm_pp_smu.o amdgpu_dm_psr.o
 endif
 
 ifdef CONFIG_DRM_AMD_DC_HDCP

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -58,6 +58,7 @@
 #if defined(CONFIG_DEBUG_FS)
 #include "amdgpu_dm_debugfs.h"
 #endif
+#include "amdgpu_dm_psr.h"
 
 #include "ivsrcid/ivsrcid_vislands30.h"
 
@@ -213,12 +214,6 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 static void handle_cursor_update(struct drm_plane *plane,
 				 struct drm_plane_state *old_plane_state);
 
-static void amdgpu_dm_set_psr_caps(struct dc_link *link);
-static bool amdgpu_dm_psr_enable(struct dc_stream_state *stream);
-static bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream);
-static bool amdgpu_dm_psr_disable(struct dc_stream_state *stream);
-static bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm);
-
 static const struct drm_format_info *
 amd_get_format_info(const struct drm_mode_fb_cmd2 *cmd);
 
@@ -10729,136 +10724,6 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
 						       freesync_capable);
 }
 
-static void amdgpu_dm_set_psr_caps(struct dc_link *link)
-{
-	uint8_t dpcd_data[EDP_PSR_RECEIVER_CAP_SIZE];
-
-	if (!(link->connector_signal & SIGNAL_TYPE_EDP))
-		return;
-	if (link->type == dc_connection_none)
-		return;
-	if (dm_helpers_dp_read_dpcd(NULL, link, DP_PSR_SUPPORT,
-					dpcd_data, sizeof(dpcd_data))) {
-		link->dpcd_caps.psr_caps.psr_version = dpcd_data[0];
-
-		if (dpcd_data[0] == 0) {
-			link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
-			link->psr_settings.psr_feature_enabled = false;
-		} else {
-			link->psr_settings.psr_version = DC_PSR_VERSION_1;
-			link->psr_settings.psr_feature_enabled = true;
-		}
-
-		DRM_INFO("PSR support:%d\n", link->psr_settings.psr_feature_enabled);
-	}
-}
-
-/*
- * amdgpu_dm_link_setup_psr() - configure psr link
- * @stream: stream state
- *
- * Return: true if success
- */
-static bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream)
-{
-	struct dc_link *link = NULL;
-	struct psr_config psr_config = {0};
-	struct psr_context psr_context = {0};
-	bool ret = false;
-
-	if (stream == NULL)
-		return false;
-
-	link = stream->link;
-
-	psr_config.psr_version = link->dpcd_caps.psr_caps.psr_version;
-
-	if (psr_config.psr_version > 0) {
-		psr_config.psr_exit_link_training_required = 0x1;
-		psr_config.psr_frame_capture_indication_req = 0;
-		psr_config.psr_rfb_setup_time = 0x37;
-		psr_config.psr_sdp_transmit_line_num_deadline = 0x20;
-		psr_config.allow_smu_optimizations = 0x0;
-
-		ret = dc_link_setup_psr(link, stream, &psr_config, &psr_context);
-
-	}
-	DRM_DEBUG_DRIVER("PSR link: %d\n",	link->psr_settings.psr_feature_enabled);
-
-	return ret;
-}
-
-/*
- * amdgpu_dm_psr_enable() - enable psr f/w
- * @stream: stream state
- *
- * Return: true if success
- */
-bool amdgpu_dm_psr_enable(struct dc_stream_state *stream)
-{
-	struct dc_link *link = stream->link;
-	unsigned int vsync_rate_hz = 0;
-	struct dc_static_screen_params params = {0};
-	/* Calculate number of static frames before generating interrupt to
-	 * enter PSR.
-	 */
-	// Init fail safe of 2 frames static
-	unsigned int num_frames_static = 2;
-
-	DRM_DEBUG_DRIVER("Enabling psr...\n");
-
-	vsync_rate_hz = div64_u64(div64_u64((
-			stream->timing.pix_clk_100hz * 100),
-			stream->timing.v_total),
-			stream->timing.h_total);
-
-	/* Round up
-	 * Calculate number of frames such that at least 30 ms of time has
-	 * passed.
-	 */
-	if (vsync_rate_hz != 0) {
-		unsigned int frame_time_microsec = 1000000 / vsync_rate_hz;
-		num_frames_static = (30000 / frame_time_microsec) + 1;
-	}
-
-	params.triggers.cursor_update = true;
-	params.triggers.overlay_update = true;
-	params.triggers.surface_update = true;
-	params.num_frames = num_frames_static;
-
-	dc_stream_set_static_screen_params(link->ctx->dc,
-					   &stream, 1,
-					   &params);
-
-	return dc_link_set_psr_allow_active(link, true, false, false);
-}
-
-/*
- * amdgpu_dm_psr_disable() - disable psr f/w
- * @stream:  stream state
- *
- * Return: true if success
- */
-static bool amdgpu_dm_psr_disable(struct dc_stream_state *stream)
-{
-
-	DRM_DEBUG_DRIVER("Disabling psr...\n");
-
-	return dc_link_set_psr_allow_active(stream->link, false, true, false);
-}
-
-/*
- * amdgpu_dm_psr_disable() - disable psr f/w
- * if psr is enabled on any stream
- *
- * Return: true if success
- */
-static bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm)
-{
-	DRM_DEBUG_DRIVER("Disabling psr if psr is enabled on any stream\n");
-	return dc_set_psr_allow_active(dm->dc, false);
-}
-
 void amdgpu_dm_trigger_timing_sync(struct drm_device *dev)
 {
 	struct amdgpu_device *adev = drm_to_adev(dev);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c

+/*
+ * Copyright 2021 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
+ *
+ */
+
+#include "amdgpu_dm_psr.h"
+#include "dc.h"
+#include "dm_helpers.h"
+
+/*
+ * amdgpu_dm_set_psr_caps() - set link psr capabilities
+ * @link: link
+ *
+ */
+void amdgpu_dm_set_psr_caps(struct dc_link *link)
+{
+	uint8_t dpcd_data[EDP_PSR_RECEIVER_CAP_SIZE];
+
+	if (!(link->connector_signal & SIGNAL_TYPE_EDP))
+		return;
+	if (link->type == dc_connection_none)
+		return;
+	if (dm_helpers_dp_read_dpcd(NULL, link, DP_PSR_SUPPORT,
+					dpcd_data, sizeof(dpcd_data))) {
+		link->dpcd_caps.psr_caps.psr_version = dpcd_data[0];
+
+		if (dpcd_data[0] == 0) {
+			link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
+			link->psr_settings.psr_feature_enabled = false;
+		} else {
+			link->psr_settings.psr_version = DC_PSR_VERSION_1;
+			link->psr_settings.psr_feature_enabled = true;
+		}
+
+		DRM_INFO("PSR support:%d\n", link->psr_settings.psr_feature_enabled);
+	}
+}
+
+/*
+ * amdgpu_dm_link_setup_psr() - configure psr link
+ * @stream: stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream)
+{
+	struct dc_link *link = NULL;
+	struct psr_config psr_config = {0};
+	struct psr_context psr_context = {0};
+	struct dc *dc = NULL;
+	bool ret = false;
+
+	if (stream == NULL)
+		return false;
+
+	link = stream->link;
+	dc = link->ctx->dc;
+
+	psr_config.psr_version = link->dpcd_caps.psr_caps.psr_version;
+
+	if (psr_config.psr_version > 0) {
+		psr_config.psr_exit_link_training_required = 0x1;
+		psr_config.psr_frame_capture_indication_req = 0;
+		psr_config.psr_rfb_setup_time = 0x37;
+		psr_config.psr_sdp_transmit_line_num_deadline = 0x20;
+		psr_config.allow_smu_optimizations = 0x0;
+
+		ret = dc_link_setup_psr(link, stream, &psr_config, &psr_context);
+
+	}
+	DRM_DEBUG_DRIVER("PSR link: %d\n",	link->psr_settings.psr_feature_enabled);
+
+	return ret;
+}
+
+/*
+ * amdgpu_dm_psr_enable() - enable psr f/w
+ * @stream: stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_enable(struct dc_stream_state *stream)
+{
+	struct dc_link *link = stream->link;
+	unsigned int vsync_rate_hz = 0;
+	struct dc_static_screen_params params = {0};
+	/* Calculate number of static frames before generating interrupt to
+	 * enter PSR.
+	 */
+	// Init fail safe of 2 frames static
+	unsigned int num_frames_static = 2;
+
+	DRM_DEBUG_DRIVER("Enabling psr...\n");
+
+	vsync_rate_hz = div64_u64(div64_u64((
+			stream->timing.pix_clk_100hz * 100),
+			stream->timing.v_total),
+			stream->timing.h_total);
+
+	/* Round up
+	 * Calculate number of frames such that at least 30 ms of time has
+	 * passed.
+	 */
+	if (vsync_rate_hz != 0) {
+		unsigned int frame_time_microsec = 1000000 / vsync_rate_hz;
+		num_frames_static = (30000 / frame_time_microsec) + 1;
+	}
+
+	params.triggers.cursor_update = true;
+	params.triggers.overlay_update = true;
+	params.triggers.surface_update = true;
+	params.num_frames = num_frames_static;
+
+	dc_stream_set_static_screen_params(link->ctx->dc,
+					   &stream, 1,
+					   &params);
+
+	return dc_link_set_psr_allow_active(link, true, false, false);
+}
+
+/*
+ * amdgpu_dm_psr_disable() - disable psr f/w
+ * @stream:  stream state
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_disable(struct dc_stream_state *stream)
+{
+
+	DRM_DEBUG_DRIVER("Disabling psr...\n");
+
+	return dc_link_set_psr_allow_active(stream->link, false, true, false);
+}
+
+/*
+ * amdgpu_dm_psr_disable() - disable psr f/w
+ * if psr is enabled on any stream
+ *
+ * Return: true if success
+ */
+bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm)
+{
+	DRM_DEBUG_DRIVER("Disabling psr if psr is enabled on any stream\n");
+	return dc_set_psr_allow_active(dm->dc, false);
+}
+

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.h

+/*
+ * Copyright 2021 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 AMDGPU_DM_AMDGPU_DM_PSR_H_
+#define AMDGPU_DM_AMDGPU_DM_PSR_H_
+
+#include "amdgpu.h"
+
+void amdgpu_dm_set_psr_caps(struct dc_link *link);
+bool amdgpu_dm_psr_enable(struct dc_stream_state *stream);
+bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream);
+bool amdgpu_dm_psr_disable(struct dc_stream_state *stream);
+bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm);
+
+#endif /* AMDGPU_DM_AMDGPU_DM_PSR_H_ */