From: Ivan Lipski Date: Thu, 7 Aug 2025 13:45:26 +0000 (-0400) Subject: drm/amd/display: Support HW cursor 180 rot for any number of pipe splits X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8a359f0f138d5ac7ceffd21b73279be50e516c0a;p=users%2Fjedix%2Flinux-maple.git drm/amd/display: Support HW cursor 180 rot for any number of pipe splits [Why] For the HW cursor, its current position in the pipe_ctx->stream struct is not affected by the 180 rotation, i. e. the top left corner is still at 0,0. However, the DPP & HUBP set_cursor_position functions require rotated position. The current approach is hard-coded for ODM 2:1, thus it's failing for ODM 4:1, resulting in a double cursor. [How] Instead of calculating the new cursor position relatively to the viewports, we calculate it using a viewavable clip_rect of each plane. The clip_rects are first offset and scaled to the same space as the src_rect, i. e. Stream space -> Plane space. In case of a pipe split, which divides the plane into 2 or more viewports, the clip_rect is the union of all the viewports of the given plane. With the assumption that the viewports in HUBP's set_cursor_position are in the Plane space as well, it should produce a correct cursor position for any number of pipe splits. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Ivan Lipski Signed-off-by: Leo Li Signed-off-by: Aurabindo Pillai Tested-by: Dan Wheeler Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c index d633033c98f2..506c3bbbf221 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c @@ -3663,6 +3663,8 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx) int y_plane = pipe_ctx->plane_state->dst_rect.y; int x_pos = pos_cpy.x; int y_pos = pos_cpy.y; + int clip_x = pipe_ctx->plane_state->clip_rect.x; + int clip_width = pipe_ctx->plane_state->clip_rect.width; if ((pipe_ctx->top_pipe != NULL) || (pipe_ctx->bottom_pipe != NULL)) { if ((pipe_ctx->plane_state->src_rect.width != pipe_ctx->plane_res.scl_data.viewport.width) || @@ -3681,7 +3683,7 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx) */ /** - * Translate cursor from stream space to plane space. + * Translate cursor and clip offset from stream space to plane space. * * If the cursor is scaled then we need to scale the position * to be in the approximately correct place. We can't do anything @@ -3698,6 +3700,10 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx) pipe_ctx->plane_state->dst_rect.width; y_pos = (y_pos - y_plane) * pipe_ctx->plane_state->src_rect.height / pipe_ctx->plane_state->dst_rect.height; + clip_x = (clip_x - x_plane) * pipe_ctx->plane_state->src_rect.width / + pipe_ctx->plane_state->dst_rect.width; + clip_width = clip_width * pipe_ctx->plane_state->src_rect.width / + pipe_ctx->plane_state->dst_rect.width; } /** @@ -3744,30 +3750,18 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx) if (param.rotation == ROTATION_ANGLE_0) { - int viewport_width = - pipe_ctx->plane_res.scl_data.viewport.width; - int viewport_x = - pipe_ctx->plane_res.scl_data.viewport.x; if (param.mirror) { - if (pipe_split_on || odm_combine_on) { - if (pos_cpy.x >= viewport_width + viewport_x) { - pos_cpy.x = 2 * viewport_width - - pos_cpy.x + 2 * viewport_x; - } else { - uint32_t temp_x = pos_cpy.x; - - pos_cpy.x = 2 * viewport_x - pos_cpy.x; - if (temp_x >= viewport_x + - (int)hubp->curs_attr.width || pos_cpy.x - <= (int)hubp->curs_attr.width + - pipe_ctx->plane_state->src_rect.x) { - pos_cpy.x = 2 * viewport_width - temp_x; - } - } - } else { - pos_cpy.x = viewport_width - pos_cpy.x + 2 * viewport_x; - } + /* + * The plane is split into multiple viewports. + * The combination of all viewports span the + * entirety of the clip rect. + * + * For no pipe_split, viewport_width is represents + * the full width of the clip_rect, so we can just + * mirror it. + */ + pos_cpy.x = clip_width - pos_cpy.x + 2 * clip_x; } } // Swap axis and mirror horizontally @@ -3837,30 +3831,17 @@ void dcn10_set_cursor_position(struct pipe_ctx *pipe_ctx) } // Mirror horizontally and vertically else if (param.rotation == ROTATION_ANGLE_180) { - int viewport_width = - pipe_ctx->plane_res.scl_data.viewport.width; - int viewport_x = - pipe_ctx->plane_res.scl_data.viewport.x; - if (!param.mirror) { - if (pipe_split_on || odm_combine_on) { - if (pos_cpy.x >= viewport_width + viewport_x) { - pos_cpy.x = 2 * viewport_width - - pos_cpy.x + 2 * viewport_x; - } else { - uint32_t temp_x = pos_cpy.x; - - pos_cpy.x = 2 * viewport_x - pos_cpy.x; - if (temp_x >= viewport_x + - (int)hubp->curs_attr.width || pos_cpy.x - <= (int)hubp->curs_attr.width + - pipe_ctx->plane_state->src_rect.x) { - pos_cpy.x = temp_x + viewport_width; - } - } - } else { - pos_cpy.x = viewport_width - pos_cpy.x + 2 * viewport_x; - } + /* + * The plane is split into multiple viewports. + * The combination of all viewports span the + * entirety of the clip rect. + * + * For no pipe_split, viewport_width is represents + * the full width of the clip_rect, so we can just + * mirror it. + */ + pos_cpy.x = clip_width - pos_cpy.x + 2 * clip_x; } /**