linux-kernel - [PATCH v1 5/5] drm/bridge: tc358768: Correct BTACNTRL1 programming

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Message-Id: <20211002233447.1105-6-digetx@gmail.com>
Date:   Sun,  3 Oct 2021 02:34:47 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Andreas Westman Dorcsak <hedmoo@...oo.com>,
        Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 5/5] drm/bridge: tc358768: Correct BTACNTRL1 programming

TXTAGOCNT and RXTASURECNT bitfields of BTACNTRL1 register are swapped in
the code, correct them. Driver doesn't implement low power mode for now,
so this change doesn't make a practical difference yet.

Tested-by: Andreas Westman Dorcsak <hedmoo@...oo.com> # Asus TF700T
Tested-by: Maxim Schwalm <maxim.schwalm@...il.com> #TF700T
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/gpu/drm/bridge/tc358768.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index cfceba5ef3b8..fd585bf925fe 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -790,7 +790,7 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge)
 	val = tc358768_ns_to_cnt(val, dsibclk_nsk) - 1;
 	val2 = tc358768_ns_to_cnt(tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk),
 				  dsibclk_nsk) - 2;
-	val |= val2 << 16;
+	val = val << 16 | val2;
 	dev_dbg(priv->dev, "BTACNTRL1: 0x%x\n", val);
 	tc358768_write(priv, TC358768_BTACNTRL1, val);
 
-- 
2.32.0