drm/hisilicon/hibmc: Adding reset colorbar cfg in dp init.

Add colorbar disable operation before reset chontroller, to make sure
colorbar status is clear in the DP init, so if rmmod the driver and the
previous colorbar configuration will not affect the next time insmod the
driver.

Fixes: 3c7623fb5bb6 ("drm/hisilicon/hibmc: Enable this hot plug detect of irq feature")
Signed-off-by: Baihan Li <libaihan@huawei.com>
Signed-off-by: Yongbang Shi <shiyongbang@huawei.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Tao Tian <tiantao6@hisilicon.com>
Link: https://patch.msgid.link/20251210023759.3944834-5-shiyongbang@huawei.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
index 8f8ca94..d5bd3c4 100644 (file)
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
@@ -180,6 +180,8 @@ int hibmc_dp_hw_init(struct hibmc_dp *dp)
        /* int init */
        writel(0, dp_dev->base + HIBMC_DP_INTR_ENABLE);
        writel(HIBMC_DP_INT_RST, dp_dev->base + HIBMC_DP_INTR_ORIGINAL_STATUS);
+       /* clr colorbar */
+       writel(0, dp_dev->base + HIBMC_DP_COLOR_BAR_CTRL);
        /* rst */
        writel(0, dp_dev->base + HIBMC_DP_DPTX_RST_CTRL);
        usleep_range(30, 50);