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drm/amd/display: Helper function for ALPM initialization 

[WHY]
Needed a helper function for ALPM DPCD initialization

[HOW]
Refactoring to put ALPM initialization in a helper function

Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Muhammad Ansari <muansari@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Muhammad Ansari 2022-06-20 17:49:35 -04:00 committed by Alex Deucher
parent 8a076bbcc1
commit 90bb21cb69
2 changed files with 19 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -2734,6 +2734,22 @@ static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
}
bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable)
{
bool ret = false;
union dpcd_alpm_configuration alpm_config;
if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
memset(&alpm_config, 0, sizeof(alpm_config));
alpm_config.bits.ENABLE = (enable ? true : false);
ret = dm_helpers_dp_write_dpcd(link->ctx, link,
DP_RECEIVER_ALPM_CONFIG, &alpm_config.raw,
sizeof(alpm_config.raw));
}
return ret;
}
/****************************enable_link***********************************/
static enum dc_status enable_link(
struct dc_state *state,
@ -3228,7 +3244,6 @@ bool dc_link_setup_psr(struct dc_link *link,
unsigned int panel_inst;
/* updateSinkPsrDpcdConfig*/
union dpcd_psr_configuration psr_configuration;
union dpcd_alpm_configuration alpm_configuration;
union dpcd_sink_active_vtotal_control_mode vtotal_control = {0};
psr_context->controllerId = CONTROLLER_ID_UNDEFINED;
@ -3284,15 +3299,7 @@ bool dc_link_setup_psr(struct dc_link *link,
sizeof(psr_configuration.raw));
if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
memset(&alpm_configuration, 0, sizeof(alpm_configuration));
alpm_configuration.bits.ENABLE = 1;
dm_helpers_dp_write_dpcd(
link->ctx,
link,
DP_RECEIVER_ALPM_CONFIG,
&alpm_configuration.raw,
sizeof(alpm_configuration.raw));
dc_power_alpm_dpcd_enable(link, true);
psr_context->su_granularity_required =
psr_config->su_granularity_required;
psr_context->su_y_granularity =

2
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@ -320,6 +320,8 @@ bool dc_link_setup_psr(struct dc_link *dc_link,
const struct dc_stream_state *stream, struct psr_config *psr_config,
struct psr_context *psr_context);
bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable);
void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
void dc_link_blank_all_dp_displays(struct dc *dc);