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drm/dp: Pull drm_dp_link_power_up/down from Tegra to common drm_dp_helper

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The helper functions drm_dp_link_power_up/down were moved to Tegra
DRM in commit 9a42c7c647 ("drm/tegra: Move drm_dp_link helpers to Tegra DRM")".

Now since more and more users are duplicating the same code in their
own drivers, it's time to make them as DRM DP common helpers again.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250318063452.4983-1-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Andy Yan
2025-03-18 14:34:35 +08:00
committed by Dmitry Baryshkov
parent 6b60c28233
commit 09cdda7a60
5 changed files with 73 additions and 71 deletions
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2
include/drm/display/drm_dp_helper.h
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@@ -654,6 +654,8 @@ int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux,
int drm_dp_dpcd_read_phy_link_status(struct drm_dp_aux *aux,
enum drm_dp_phy dp_phy,
u8 link_status[DP_LINK_STATUS_SIZE]);
int drm_dp_link_power_up(struct drm_dp_aux *aux, unsigned char revision);
int drm_dp_link_power_down(struct drm_dp_aux *aux, unsigned char revision);
int drm_dp_dpcd_write_payload(struct drm_dp_aux *aux,
int vcpid, u8 start_time_slot, u8 time_slot_count);