diff options
| author | Stylon Wang <stylon.wang@amd.com> | 2021-03-02 19:25:56 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:48:05 -0400 |
| commit | 9127daa0a8d88a6e6452eb8b7c9be4c3f42a867e (patch) | |
| tree | 45be5248cf31c59c7de308d20e7d23b0bef2bbd6 | |
| parent | 6c8e1f3b95a2fb3dbad1fe0f72d2902f34cfb75f (diff) | |
| download | linux-9127daa0a8d88a6e6452eb8b7c9be4c3f42a867e.tar.bz2 | |
drm/amd/display: Guard ASSR with internal display flag
[Why]
ASSR enabling only considers capability declared in DPCD.
We also need to check whether the connector is internal.
[How]
ASSR enabling need to check both DPCD capability and internal display
flag.
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 484d96f78ade..a92fc1875474 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -1635,6 +1635,42 @@ enum link_training_result dc_link_dp_perform_link_training( return status; } +static enum dp_panel_mode try_enable_assr(struct dc_stream_state *stream) +{ + struct dc_link *link = stream->link; + enum dp_panel_mode panel_mode = dp_get_panel_mode(link); +#ifdef CONFIG_DRM_AMD_DC_HDCP + struct cp_psp *cp_psp = &stream->ctx->cp_psp; +#endif + + /* ASSR must be supported on the panel */ + if (panel_mode == DP_PANEL_MODE_DEFAULT) + return panel_mode; + + /* eDP or internal DP only */ + if (link->connector_signal != SIGNAL_TYPE_EDP && + !(link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT && + link->is_internal_display)) + return DP_PANEL_MODE_DEFAULT; + +#ifdef CONFIG_DRM_AMD_DC_HDCP + if (cp_psp && cp_psp->funcs.enable_assr) { + if (!cp_psp->funcs.enable_assr(cp_psp->handle, link)) { + /* since eDP implies ASSR on, change panel + * mode to disable ASSR + */ + panel_mode = DP_PANEL_MODE_DEFAULT; + } + } else + panel_mode = DP_PANEL_MODE_DEFAULT; + +#else + /* turn off ASSR if the implementation is not compiled in */ + panel_mode = DP_PANEL_MODE_DEFAULT; +#endif + return panel_mode; +} + bool perform_link_training_with_retries( const struct dc_link_settings *link_setting, bool skip_video_pattern, @@ -1646,7 +1682,7 @@ bool perform_link_training_with_retries( uint8_t delay_between_attempts = LINK_TRAINING_RETRY_DELAY; struct dc_stream_state *stream = pipe_ctx->stream; struct dc_link *link = stream->link; - enum dp_panel_mode panel_mode = dp_get_panel_mode(link); + enum dp_panel_mode panel_mode; /* We need to do this before the link training to ensure the idle pattern in SST * mode will be sent right after the link training @@ -1671,23 +1707,11 @@ bool perform_link_training_with_retries( msleep(delay_dp_power_up_in_ms); } -#ifdef CONFIG_DRM_AMD_DC_HDCP - if (panel_mode == DP_PANEL_MODE_EDP) { - struct cp_psp *cp_psp = &stream->ctx->cp_psp; - - if (cp_psp && cp_psp->funcs.enable_assr) { - if (!cp_psp->funcs.enable_assr(cp_psp->handle, link)) { - /* since eDP implies ASSR on, change panel - * mode to disable ASSR - */ - panel_mode = DP_PANEL_MODE_DEFAULT; - } - } else - panel_mode = DP_PANEL_MODE_DEFAULT; - } -#endif - + panel_mode = try_enable_assr(stream); dp_set_panel_mode(link, panel_mode); + DC_LOG_DETECTION_DP_CAPS("Link: %d ASSR enabled: %d\n", + link->link_index, + panel_mode != DP_PANEL_MODE_DEFAULT); if (link->aux_access_disabled) { dc_link_dp_perform_link_training_skip_aux(link, link_setting); |