From: Wenjing Liu <Wenjing.Liu@xxxxxxx>
[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@xxxxxxx>
Reviewed-by: Nikola Cornij <Nikola.Cornij@xxxxxxx>
Acked-by: Leo Li <sunpeng.li@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 9 +++++++++
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 2 +-
drivers/gpu/drm/amd/display/dc/dc_link.h | 3 +++
3 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index bce263d..1ebfa6c 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -603,6 +603,15 @@ 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);
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 0d8ef8f..acb4f82 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
@@ -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 &&
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 7b61fb7..4e26d6e 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -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,
--
2.7.4
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