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From:   allen <allen.chen@ite.com.tw>
CC:     Allen Chen <allen.chen@ite.com.tw>,
        Pin-yen Lin <treapking@google.com>,
        Jau-Chih Tseng <Jau-Chih.Tseng@ite.com.tw>,
        Kenneth Hung <Kenneth.Hung@ite.com.tw>,
        Hermes Wu <Hermes.Wu@ite.com.tw>,
        Pin-Yen Lin <treapking@chromium.org>,
        Andrzej Hajda <andrzej.hajda@intel.com>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Robert Foss <robert.foss@linaro.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Jonas Karlman <jonas@kwiboo.se>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        "open list:DRM DRIVERS" <dri-devel@lists.freedesktop.org>,
        open list <linux-kernel@vger.kernel.org>
Subject: [PATCH 3/3] drm/bridge: it6505: Modified video clock calculation and video debug message
Date:   Thu, 7 Jul 2022 16:05:59 +0800
Message-ID: <20220707080600.49041-4-allen.chen@ite.com.tw>
In-Reply-To: <20220707080600.49041-1-allen.chen@ite.com.tw>
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From: allen chen <allen.chen@ite.com.tw>

Speed up video clock calculation and remove redundant video debug message.

Signed-off-by: Pin-Yen Lin <treapking@chromium.org>
Signed-off-by: Allen Chen <allen.chen@ite.com.tw>

---
 drivers/gpu/drm/bridge/ite-it6505.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index cfd2c3275dc5..11a34ddb60a1 100644
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -703,7 +703,7 @@ static void it6505_calc_video_info(struct it6505 *it6505)
 	DRM_DEV_DEBUG_DRIVER(dev, "hactive_start:%d, vactive_start:%d",
 			     hdes, vdes);
 
-	for (i = 0; i < 10; i++) {
+	for (i = 0; i < 3; i++) {
 		it6505_set_bits(it6505, REG_DATA_CTRL0, ENABLE_PCLK_COUNTER,
 				ENABLE_PCLK_COUNTER);
 		usleep_range(10000, 15000);
@@ -720,7 +720,7 @@ static void it6505_calc_video_info(struct it6505 *it6505)
 		return;
 	}
 
-	sum /= 10;
+	sum /= 3;
 	pclk = 13500 * 2048 / sum;
 	it6505->video_info.clock = pclk;
 	it6505->video_info.hdisplay = hdew;
@@ -2344,8 +2344,6 @@ static void it6505_irq_hpd(struct it6505 *it6505)
 
 		if (!it6505_get_video_status(it6505))
 			it6505_video_reset(it6505);
-
-		it6505_calc_video_info(it6505);
 	} else {
 		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
 
-- 
2.25.1