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/*
* 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.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;
return true;
}
/*
* 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;
}
DRM_INFO("PSR support %d, DC PSR ver %d, sink PSR ver %d DPCD caps 0x%x su_y_granularity %d\n",
link->psr_settings.psr_feature_enabled,
link->psr_settings.psr_version,
link->dpcd_caps.psr_info.psr_version,
link->dpcd_caps.psr_info.psr_dpcd_caps.raw,
link->dpcd_caps.psr_info.psr2_su_y_granularity_cap);
}
/*
* 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);
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
*
* Return: true if success
*/
bool 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 * 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;
return dc_link_set_psr_allow_active(link, &psr_enable, false, false, &power_opt);
}
/*
* 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)
{
unsigned int power_opt = 0;
bool psr_enable = false;
DRM_DEBUG_DRIVER("Disabling psr...\n");
return dc_link_set_psr_allow_active(stream->link, &psr_enable, true, false, &power_opt);
}
/*
* amdgpu_dm_psr_disable() - disable psr f/w
* 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);
}
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