[PATCH v2 3/4] drm/amd/display: pass panel instance in DMUB dirty rect command

[sunpeng.li at amd.com]

From: David Zhang <dingchen.zhang at amd.com>

[Why]

In cases where there are multiple eDP instances, DMUB needs to know
which instance the command is for. Today, the field for specifying the
panel_inst exists in both dmub_cmd_update_dirty_rect_data and
dmub_cmd_update_cursor_info_data.

For cursor updates, we already specify the panel_inst, but that's not
the case for dirty_rect updates. Today, a value of '0' is used (due
to initial memsetting of the cmd struct to 0)

[how]

In dc_dmub_update_dirty_rect(), Call dc_get_edp_link_panel_inst() to get
the panel_inst, and fill it in the DMUB cmd struct.

v2: Update commit message for clarity.

Signed-off-by: Mikita Lipski <mikita.lipski at amd.com>
Signed-off-by: David Zhang <dingchen.zhang at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index d4173be11903..31d83297bcb5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2837,10 +2837,14 @@ void dc_dmub_update_dirty_rect(struct dc *dc,
 	struct dc_context *dc_ctx = dc->ctx;
 	struct dmub_cmd_update_dirty_rect_data *update_dirty_rect;
 	unsigned int i, j;
+	unsigned int panel_inst = 0;
 
 	if (stream->link->psr_settings.psr_version != DC_PSR_VERSION_SU_1)
 		return;
 
+	if (!dc_get_edp_link_panel_inst(dc, stream->link, &panel_inst))
+		return;
+
 	memset(&cmd, 0x0, sizeof(cmd));
 	cmd.update_dirty_rect.header.type = DMUB_CMD__UPDATE_DIRTY_RECT;
 	cmd.update_dirty_rect.header.sub_type = 0;
@@ -2869,6 +2873,7 @@ void dc_dmub_update_dirty_rect(struct dc *dc,
 			if (pipe_ctx->plane_state != plane_state)
 				continue;
 
+			update_dirty_rect->panel_inst = panel_inst;
 			update_dirty_rect->pipe_idx = j;
 			dc_dmub_srv_cmd_queue(dc_ctx->dmub_srv, &cmd);
 			dc_dmub_srv_cmd_execute(dc_ctx->dmub_srv);
-- 
2.36.1