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drm/amd/display: prefer preferred link cap over verified link settings 

[why]
when preferred link cap is set, we should always use
preferred in all validation.
we should not use preferred for some validation but use
verified for others.

[how]
create getter function that gets verified link cap.
if preferred is set, return preferred link settings instead.

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2019-03-22 19:33:46 -04:00 committed by Alex Deucher
parent e9164db72a
commit 7ee3769a37
3 changed files with 13 additions and 1 deletions
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9
drivers/gpu/drm/amd/display/dc/core/dc.c
View File

@ -597,6 +597,15 @@ uint32_t dc_link_bandwidth_kbps(
}
const struct dc_link_settings *dc_link_get_verified_link_cap(
const struct dc_link *link)
{
if (link->preferred_link_setting.lane_count != LANE_COUNT_UNKNOWN &&
link->preferred_link_setting.link_rate != LINK_RATE_UNKNOWN)
return &link->preferred_link_setting;
return &link->verified_link_cap;
}
static void destruct(struct dc *dc)
{
dc_release_state(dc->current_state);

2
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View File

@ -1549,7 +1549,7 @@ bool dp_validate_mode_timing(
return true;
/* We always use verified link settings */
link_setting = &link->verified_link_cap;
link_setting = dc_link_get_verified_link_cap(link);
/* TODO: DYNAMIC_VALIDATION needs to be implemented */
/*if (flags.DYNAMIC_VALIDATION == 1 &&

3
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@ -250,6 +250,9 @@ uint32_t dc_link_bandwidth_kbps(
const struct dc_link *link,
const struct dc_link_settings *link_setting);
const struct dc_link_settings *dc_link_get_verified_link_cap(
const struct dc_link *link);
bool dc_submit_i2c(
struct dc *dc,
uint32_t link_index,