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From:   Tian Tao <tiantao6@hisilicon.com>
To:     <puck.chen@hisilicon.com>, <airlied@linux.ie>, <daniel@ffwll.ch>,
        <tzimmermann@suse.de>, <kraxel@redhat.com>,
        <alexander.deucher@amd.com>, <tglx@linutronix.de>,
        <dri-devel@lists.freedesktop.org>, <xinliang.liu@linaro.org>,
        <linux-kernel@vger.kernel.org>
CC:     <linuxarm@huawei.com>
Subject: [PATCH] drm/hisilicon: Enable the shadowfb for hibmc
Date:   Sat, 11 Jan 2020 11:09:06 +0800
Message-ID: <1578712146-16327-1-git-send-email-tiantao6@hisilicon.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

set the prefer_shadow as 1,so we use the shadowfb to acceleration.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Gong junjie <gongjunjie2@huawei.com>
---
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index dbdeb2b..2883555 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -93,7 +93,7 @@ static int hibmc_kms_init(struct hibmc_drm_private *priv)
 
 	priv->dev->mode_config.fb_base = priv->fb_base;
 	priv->dev->mode_config.preferred_depth = 24;
-	priv->dev->mode_config.prefer_shadow = 0;
+	priv->dev->mode_config.prefer_shadow = 1;
 
 	priv->dev->mode_config.funcs = (void *)&hibmc_mode_funcs;
 
-- 
2.7.4