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From: Sean Paul <sean@poorly.run>
To: dri-devel@lists.freedesktop.org
Cc: Sean Paul <seanpaul@chromium.org>, Zain Wang <wzz@rock-chips.com>,
	Tomasz Figa <tfiga@chromium.org>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v4 07/11] drm/rockchip: Check for fast link training before enabling psr
Date: Wed,  8 May 2019 12:09:12 -0400	[thread overview]
Message-ID: <20190508160920.144739-8-sean@poorly.run> (raw)
In-Reply-To: <20190508160920.144739-1-sean@poorly.run>

From: Sean Paul <seanpaul@chromium.org>

Once we start shutting off the link during PSR, we're going to want fast
training to work. If the display doesn't support fast training, don't
enable psr.

Changes in v2:
- None
Changes in v3:
- None
Changes in v4:
- None

Link to v1: https://patchwork.freedesktop.org/patch/msgid/20190228210939.83386-3-sean@poorly.run
Link to v2: https://patchwork.freedesktop.org/patch/msgid/20190326204509.96515-2-sean@poorly.run
Link to v3: https://patchwork.freedesktop.org/patch/msgid/20190502194956.218441-9-sean@poorly.run

Cc: Zain Wang <wzz@rock-chips.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
---
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 225f5e5dd69b..af34554a5a02 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1040,16 +1040,17 @@ static int analogix_dp_commit(struct analogix_dp_device *dp)
 	if (ret)
 		return ret;
 
+	/* Check whether panel supports fast training */
+	ret = analogix_dp_fast_link_train_detection(dp);
+	if (ret)
+		dp->psr_enable = false;
+
 	if (dp->psr_enable) {
 		ret = analogix_dp_enable_sink_psr(dp);
 		if (ret)
 			return ret;
 	}
 
-	/* Check whether panel supports fast training */
-	ret =  analogix_dp_fast_link_train_detection(dp);
-	if (ret)
-		dp->psr_enable = false;
 
 	return ret;
 }
-- 
Sean Paul, Software Engineer, Google / Chromium OS


  parent reply	other threads:[~2019-05-08 16:09 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20190508160920.144739-1-sean@poorly.run>
2019-05-08 16:09 ` [PATCH v4 01/11] drm: Add atomic variants of enable/disable to encoder helper funcs Sean Paul
2019-05-08 16:31   ` Daniel Vetter
2019-05-08 18:18     ` Sean Paul
2019-05-08 16:09 ` [PATCH v4 02/11] drm: Add drm_atomic_get_(old|new-_connector_for_encoder() helpers Sean Paul
2019-05-08 16:33   ` Daniel Vetter
2019-05-12 16:48     ` Laurent Pinchart
2019-05-08 16:09 ` [PATCH v4 03/11] drm: Add atomic variants for bridge enable/disable Sean Paul
2019-05-21  8:58   ` Andrzej Hajda
2019-05-21 14:31     ` Sean Paul
2019-05-08 16:09 ` [PATCH v4 04/11] drm: Convert connector_helper_funcs->atomic_check to accept drm_atomic_state Sean Paul
2019-05-08 16:09 ` [PATCH v4 05/11] drm: Add helpers to kick off self refresh mode in drivers Sean Paul
2019-05-08 16:35   ` Daniel Vetter
2019-05-08 16:09 ` [PATCH v4 06/11] drm/rockchip: Use dirtyfb helper Sean Paul
2019-05-08 16:09 ` Sean Paul [this message]
2019-05-08 16:09 ` [PATCH v4 08/11] drm/rockchip: Use the helpers for PSR Sean Paul
2019-05-08 16:09 ` [PATCH v4 09/11] drm/rockchip: Use vop_win in vop_win_disable instead of vop_win_data Sean Paul
2019-05-08 16:09 ` [PATCH v4 10/11] drm/rockchip: Don't fully disable vop on self refresh Sean Paul
2019-05-08 16:09 ` [PATCH v4 11/11] drm/rockchip: Use drm_atomic_helper_commit_tail_rpm Sean Paul

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