From 0daf44ea9dccfcdb1fe694e9ea85497b6cc3a065 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Mon, 8 Jul 2024 22:00:28 +0300 Subject: drm/dp: Add helper to dump an LTTPR PHY descriptor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a helper to dump the DPCD descriptor for an LTTPR PHY. This is based on [1] and [2] moving the helper to DRM core as suggested by Ville. [1] https://lore.kernel.org/all/20240703155937.1674856-5-imre.deak@intel.com [2] https://lore.kernel.org/all/20240703155937.1674856-6-imre.deak@intel.com Cc: dri-devel@lists.freedesktop.org Cc: Ville Syrjälä Reviewed-by: Ankit Nautiyal Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20240708190029.271247-6-imre.deak@intel.com --- include/drm/display/drm_dp.h | 4 ++++ include/drm/display/drm_dp_helper.h | 2 ++ 2 files changed, 6 insertions(+) (limited to 'include') diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index 0b032faa8cf2..0146ccfe9c2e 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -1523,6 +1523,10 @@ enum drm_dp_phy { #define DP_SYMBOL_ERROR_COUNT_LANE2_PHY_REPEATER1 0xf0039 /* 1.3 */ #define DP_SYMBOL_ERROR_COUNT_LANE3_PHY_REPEATER1 0xf003b /* 1.3 */ +#define DP_OUI_PHY_REPEATER1 0xf003d /* 1.3 */ +#define DP_OUI_PHY_REPEATER(dp_phy) \ + DP_LTTPR_REG(dp_phy, DP_OUI_PHY_REPEATER1) + #define __DP_FEC1_BASE 0xf0290 /* 1.4 */ #define __DP_FEC2_BASE 0xf0298 /* 1.4 */ #define DP_FEC_BASE(dp_phy) \ diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h index 8defcc399f42..f88d78e43443 100644 --- a/include/drm/display/drm_dp_helper.h +++ b/include/drm/display/drm_dp_helper.h @@ -656,6 +656,8 @@ struct drm_dp_desc { int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc, bool is_branch); +int drm_dp_dump_lttpr_desc(struct drm_dp_aux *aux, enum drm_dp_phy dp_phy); + /** * enum drm_dp_quirk - Display Port sink/branch device specific quirks * -- cgit