drm/amd/display: SW cursor fallback for SubVP

[Description]
Leverage SW cursor fall back for SubVP when the cursor is too big. We
want to take advantage of being able to fallback to SW cursor when
possible because it's not worth it to disable MCLK switching because the
cursor is slightly too big.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Aurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 6752ca44e6e0b3d9add05d4a0e3fecaefce32243..0c85ab5933b4a5c7203b8cc1063437f0646379dd 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -328,6 +328,11 @@ bool dc_stream_set_cursor_attributes(
        }
 
        dc = stream->ctx->dc;
+
+       if (dc->debug.allow_sw_cursor_fallback && attributes->height * attributes->width * 4 > 16384)
+               if (stream->mall_stream_config.type == SUBVP_MAIN)
+                       return false;
+
        stream->cursor_attributes = *attributes;
 
        dc_z10_restore(dc);

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 5908b60db313964c9a888b470926a5cc1d478a4c..dbf8158b832e454ead45c1032be1280944a78ea2 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -745,6 +745,7 @@ struct dc_debug_options {
        bool disable_fixed_vs_aux_timeout_wa;
        bool force_disable_subvp;
        bool force_subvp_mclk_switch;
+       bool allow_sw_cursor_fallback;
        bool force_usr_allow;
        /* uses value at boot and disables switch */
        bool disable_dtb_ref_clk_switch;

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
index 8b887b552f2c764a92816fe8eb4525c7eb7c6760..9b8be00a23edab2b7447873d17db7346d8e51303 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c
@@ -871,6 +871,7 @@ static const struct dc_debug_options debug_defaults_drv = {
        .exit_idle_opt_for_cursor_updates = true,
        .enable_single_display_2to1_odm_policy = true,
        .enable_dp_dig_pixel_rate_div_policy = 1,
+       .allow_sw_cursor_fallback = false,
 };
 
 static const struct dc_debug_options debug_defaults_diags = {

diff --git a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
index c8b7d6ff38f4fa1887aad87bb8cc6a4bb9bcf0cb..c8ed01bbe65920276cedeec86edf7758716b697d 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c
@@ -872,6 +872,7 @@ static const struct dc_debug_options debug_defaults_drv = {
        .exit_idle_opt_for_cursor_updates = true,
        .enable_single_display_2to1_odm_policy = true,
        .enable_dp_dig_pixel_rate_div_policy = 1,
+       .allow_sw_cursor_fallback = false,
 };
 
 static const struct dc_debug_options debug_defaults_diags = {