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[v2,2/4] drm/nouveau/dp: Use the generic helper to control LTTPR transparent mode

Message ID 20241211-drm-dp-msm-add-lttpr-transparent-mode-set-v2-2-d5906ed38b28@linaro.org
State New
Headers show
Series drm/dp: Rework LTTPR transparent mode handling and add support to msm driver | expand

Commit Message

Abel Vesa Dec. 11, 2024, 1:04 p.m. UTC 
LTTPRs operating modes are defined by the DisplayPort standard and the
generic framework now provides a helper to switch between them, which
is handling the explicit disabling of non-transparent mode and its
disable->enable sequence mentioned in the DP Standard v2.0 section
3.6.6.1.

So use the new drm generic helper instead as it makes the code a bit
cleaner.

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
---
 drivers/gpu/drm/nouveau/nouveau_dp.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index bcda0105160f1450df855281e0d932606a5095dd..55691ec44abaa53c84e73358e33df1949bb1e35c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -79,21 +79,8 @@  nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector,
 	    !drm_dp_read_lttpr_common_caps(aux, dpcd, outp->dp.lttpr.caps)) {
 		int nr = drm_dp_lttpr_count(outp->dp.lttpr.caps);
 
-		if (nr) {
-			drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
-						DP_PHY_REPEATER_MODE_TRANSPARENT);
-
-			if (nr > 0) {
-				ret = drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
-							      DP_PHY_REPEATER_MODE_NON_TRANSPARENT);
-				if (ret != 1) {
-					drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
-								DP_PHY_REPEATER_MODE_TRANSPARENT);
-				} else {
-					outp->dp.lttpr.nr = nr;
-				}
-			}
-		}
+		if (!drm_dp_lttpr_init(aux, nr))
+			outp->dp.lttpr.nr = nr;
 	}
 
 	ret = drm_dp_read_dpcd_caps(aux, dpcd);