drm/bridge: it6505: Modified video clock calculation and video debug message

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>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220715024910.12578-4-allen.chen@ite.com.tw

diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index a30a31b..f9251ec 100644 (file)
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -691,7 +691,7 @@ 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);
@@ -708,7 +708,7 @@ 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;
@@ -2350,8 +2350,6 @@ 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));