[PATCH 28/39] drm/amd/display: Add HW cursor visual confirm

Alex Hung
2024-06-20T16:18:59Z

From: Ryan Seto <ryanseto@amd.com>

[WHY]
Added HW cursor visual confirm

[HOW]
Added visual confirm logic when programming cursor positions.
HW is programmed on cursor updates since cursor can change without flips.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ryan Seto <ryanseto@amd.com>
---
.../gpu/drm/amd/display/dc/core/dc_stream.c | 29 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
2 files changed, 30 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 9b24f448ce50..de0633f98158 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -416,6 +416,35 @@ bool dc_stream_program_cursor_position(
if (reset_idle_optimizations && !dc->debug.disable_dmub_reallow_idle)
dc_allow_idle_optimizations(dc, true);

+ /* apply/update visual confirm */
+ if (dc->debug.visual_confirm == VISUAL_CONFIRM_HW_CURSOR) {
+ /* update software state */
+ uint32_t color_value = MAX_TG_COLOR_VALUE;
+ int i;
+
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ struct pipe_ctx *pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
+
+ /* adjust visual confirm color for all pipes with current stream */
+ if (stream == pipe_ctx->stream) {
+ if (stream->cursor_position.enable) {
+ pipe_ctx->visual_confirm_color.color_r_cr = color_value;
+ pipe_ctx->visual_confirm_color.color_g_y = 0;
+ pipe_ctx->visual_confirm_color.color_b_cb = 0;
+ } else {
+ pipe_ctx->visual_confirm_color.color_r_cr = 0;
+ pipe_ctx->visual_confirm_color.color_g_y = 0;
+ pipe_ctx->visual_confirm_color.color_b_cb = color_value;
+ }
+
+ /* programming hardware */
+ if (pipe_ctx->plane_state)
+ dc->hwss.update_visual_confirm_color(dc, pipe_ctx,
+ pipe_ctx->plane_res.hubp->mpcc_id);
+ }
+ }
+ }
+
return true;
}

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index e0334b573f2d..64241de70f15 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -476,6 +476,7 @@ enum visual_confirm {
VISUAL_CONFIRM_SUBVP = 14,
VISUAL_CONFIRM_MCLK_SWITCH = 16,
VISUAL_CONFIRM_FAMS2 = 19,
+ VISUAL_CONFIRM_HW_CURSOR = 20,
};

enum dc_psr_power_opts {
--
2.34.1