linux-kernel - [PATCH v4 09/38] drm/bridge: analogix_dp: Move enable video into config

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Message-Id: <20180305222324.5872-10-enric.balletbo@collabora.com>
Date:   Mon,  5 Mar 2018 23:23:01 +0100
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     architt@...eaurora.org, inki.dae@...sung.com,
        thierry.reding@...il.com, hjc@...k-chips.com,
        seanpaul@...omium.org, airlied@...ux.ie, tfiga@...omium.org,
        heiko@...ech.de
Cc:     hshi@...omium.org, wzz@...k-chips.com, hl@...k-chips.com,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        dianders@...omium.org, linux-rockchip@...ts.infradead.org,
        orjan.eide@....com, m.szyprowski@...sung.com,
        Stéphane Marchesin <marcheu@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: [PATCH v4 09/38] drm/bridge: analogix_dp: Move enable video into config_video()

From: Lin Huang <hl@...k-chips.com>

We need to enable video before analogix_dp_is_video_stream_on(), so
we can get the right video stream status.

Cc: 征增 王 <wzz@...k-chips.com>
Cc: Stéphane Marchesin <marcheu@...omium.org>
Signed-off-by: Lin Huang <hl@...k-chips.com>
Signed-off-by: Sean Paul <seanpaul@...omium.org>
Signed-off-by: Thierry Escande <thierry.escande@...labora.com>
Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
---

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 5a2e35dc41e3..f9661b410cb9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -819,11 +819,10 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 		if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
 			break;
 		if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
-			dev_err(dp->dev, "Timeout of video streamclk ok\n");
+			dev_err(dp->dev, "Timeout of slave video streamclk ok\n");
 			return -ETIMEDOUT;
 		}
-
-		usleep_range(1, 2);
+		usleep_range(1000, 1001);
 	}
 
 	/* Set to use the register calculated M/N video */
@@ -838,6 +837,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp)
 	/* Configure video slave mode */
 	analogix_dp_enable_video_master(dp, 0);
 
+	/* Enable video */
+	analogix_dp_start_video(dp);
+
 	timeout_loop = 0;
 
 	for (;;) {
@@ -948,9 +950,6 @@ static void analogix_dp_commit(struct analogix_dp_device *dp)
 			DRM_ERROR("failed to enable the panel\n");
 	}
 
-	/* Enable video */
-	analogix_dp_start_video(dp);
-
 	dp->psr_enable = analogix_dp_detect_sink_psr(dp);
 	if (dp->psr_enable)
 		analogix_dp_enable_sink_psr(dp);
-- 
2.16.1