Quelle amdgpu_dm_psr.c
Sprache: C
/*
* Copyright 2021 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : AMD
*
*/
#include "amdgpu_dm_psr.h"
#include "dc_dmub_srv.h"
#include "dc.h"
#include "dm_helpers.h"
#include "amdgpu_dm.h"
#include "modules/power/power_helpers.h"
static bool link_supports_psrsu(struct dc_link *link)
{
struct dc *dc = link->ctx->dc;
if (!dc->caps.dmcub_support)
return false ;
if (dc->ctx->dce_version < DCN_VERSION_3_1)
return false ;
if (!is_psr_su_specific_panel(link))
return false ;
if (!link->dpcd_caps.alpm_caps.bits.AUX_WAKE_ALPM_CAP ||
!link->dpcd_caps.psr_info.psr_dpcd_caps.bits.Y_COORDINATE_REQUIRED)
return false ;
if (link->dpcd_caps.psr_info.psr_dpcd_caps.bits.SU_GRANULARITY_REQUIRED &&
!link->dpcd_caps.psr_info.psr2_su_y_granularity_cap)
return false ;
if (amdgpu_dc_debug_mask & DC_DISABLE_PSR_SU)
return false ;
/* Temporarily disable PSR-SU to avoid glitches */
return false ;
}
/*
* amdgpu_dm_set_psr_caps ( ) - set link psr capabilities
* @ link : link
*
*/
void amdgpu_dm_set_psr_caps(struct dc_link *link)
{
if (!(link->connector_signal & SIGNAL_TYPE_EDP)) {
link->psr_settings.psr_feature_enabled = false ;
return ;
}
if (link->type == dc_connection_none) {
link->psr_settings.psr_feature_enabled = false ;
return ;
}
if (link->dpcd_caps.psr_info.psr_version == 0 ) {
link->psr_settings.psr_version = DC_PSR_VERSION_UNSUPPORTED;
link->psr_settings.psr_feature_enabled = false ;
} else {
if (link_supports_psrsu(link))
link->psr_settings.psr_version = DC_PSR_VERSION_SU_1;
else
link->psr_settings.psr_version = DC_PSR_VERSION_1;
link->psr_settings.psr_feature_enabled = true ;
}
}
/*
* amdgpu_dm_link_setup_psr ( ) - configure psr link
* @ stream : stream state
*
* Return : true if success
*/
bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream)
{
struct dc_link *link = NULL;
struct psr_config psr_config = {0 };
struct psr_context psr_context = {0 };
struct dc *dc = NULL;
bool ret = false ;
if (stream == NULL)
return false ;
link = stream->link;
dc = link->ctx->dc;
if (link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED) {
mod_power_calc_psr_configs(&psr_config, link, stream);
/* linux DM specific updating for psr config fields */
psr_config.allow_smu_optimizations =
(amdgpu_dc_feature_mask & DC_PSR_ALLOW_SMU_OPT) &&
mod_power_only_edp(dc->current_state, stream);
psr_config.allow_multi_disp_optimizations =
(amdgpu_dc_feature_mask & DC_PSR_ALLOW_MULTI_DISP_OPT);
if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
if (!psr_su_set_dsc_slice_height(dc, link, stream, &psr_config))
return false ;
}
ret = dc_link_setup_psr(link, stream, &psr_config, &psr_context);
}
DRM_DEBUG_DRIVER("PSR link: %d\n" , link->psr_settings.psr_feature_enabled);
return ret;
}
/*
* amdgpu_dm_psr_enable ( ) - enable psr f / w
* @ stream : stream state
*
*/
void amdgpu_dm_psr_enable(struct dc_stream_state *stream)
{
struct dc_link *link = stream->link;
unsigned int vsync_rate_hz = 0 ;
struct dc_static_screen_params params = {0 };
/* Calculate number of static frames before generating interrupt to
* enter PSR .
*/
// Init fail safe of 2 frames static
unsigned int num_frames_static = 2 ;
unsigned int power_opt = 0 ;
bool psr_enable = true ;
DRM_DEBUG_DRIVER("Enabling psr...\n" );
vsync_rate_hz = div64_u64(div64_u64((
stream->timing.pix_clk_100hz * (uint64_t)100 ),
stream->timing.v_total),
stream->timing.h_total);
/* Round up
* Calculate number of frames such that at least 30 ms of time has
* passed .
*/
if (vsync_rate_hz != 0 ) {
unsigned int frame_time_microsec = 1000000 / vsync_rate_hz;
num_frames_static = (30000 / frame_time_microsec) + 1 ;
}
params.triggers.cursor_update = true ;
params.triggers.overlay_update = true ;
params.triggers.surface_update = true ;
params.num_frames = num_frames_static;
dc_stream_set_static_screen_params(link->ctx->dc,
&stream, 1 ,
¶ms);
/*
* Only enable static - screen optimizations for PSR1 . For PSR SU , this
* causes vstartup interrupt issues , used by amdgpu_dm to send vblank
* events .
*/
if (link->psr_settings.psr_version < DC_PSR_VERSION_SU_1)
power_opt |= psr_power_opt_z10_static_screen;
dc_link_set_psr_allow_active(link, &psr_enable, false , false , &power_opt);
if (link->ctx->dc->caps.ips_support)
dc_allow_idle_optimizations(link->ctx->dc, true );
}
/*
* amdgpu_dm_psr_disable ( ) - disable psr f / w
* @ stream : stream state
*
* Return : true if success
*/
bool amdgpu_dm_psr_disable(struct dc_stream_state *stream, bool wait)
{
bool psr_enable = false ;
DRM_DEBUG_DRIVER("Disabling psr...\n" );
return dc_link_set_psr_allow_active(stream->link, &psr_enable, wait, false , NULL);
}
/*
* amdgpu_dm_psr_disable_all ( ) - disable psr f / w for all streams
* if psr is enabled on any stream
*
* Return : true if success
*/
bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm)
{
DRM_DEBUG_DRIVER("Disabling psr if psr is enabled on any stream\n" );
return dc_set_psr_allow_active(dm->dc, false );
}
/*
* amdgpu_dm_psr_is_active_allowed ( ) - check if psr is allowed on any stream
* @ dm : pointer to amdgpu_display_manager
*
* Return : true if allowed
*/
bool amdgpu_dm_psr_is_active_allowed(struct amdgpu_display_manager *dm)
{
unsigned int i;
bool allow_active = false ;
for (i = 0 ; i < dm->dc->current_state->stream_count ; i++) {
struct dc_link *link;
struct dc_stream_state *stream = dm->dc->current_state->streams[i];
link = stream->link;
if (!link)
continue ;
if (link->psr_settings.psr_feature_enabled &&
link->psr_settings.psr_allow_active) {
allow_active = true ;
break ;
}
}
return allow_active;
}
/**
* amdgpu_dm_psr_wait_disable ( ) - Wait for eDP panel to exit PSR
* @ stream : stream state attached to the eDP link
*
* Waits for a max of 500 ms for the eDP panel to exit PSR .
*
* Return : true if panel exited PSR , false otherwise .
*/
bool amdgpu_dm_psr_wait_disable(struct dc_stream_state *stream)
{
enum dc_psr_state psr_state = PSR_STATE0;
struct dc_link *link = stream->link;
int retry_count;
if (link == NULL)
return false ;
for (retry_count = 0 ; retry_count <= 1000 ; retry_count++) {
dc_link_get_psr_state(link, &psr_state);
if (psr_state == PSR_STATE0)
break ;
udelay(500 );
}
if (retry_count == 1000 )
return false ;
return true ;
}
Messung V0.5 in Prozent C=96 H=97 G=96
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-04)
¤
*© Formatika GbR, Deutschland
2026-10-10
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