commit f418676e9ab8b7ec5496fc83fe8ab2b92b26a58e
author Simon Glass <sjg@chromium.org> Wed May 31 17:57:28 2017 -0600
committer Simon Glass <sjg@chromium.org> Fri Jun 09 13:45:28 2017 -0600
tree c928090a09acab8989513ddbf037cf2d2692e9a4
parent 6f06ef57bb9031e322752343f7cf8f2408904452

rockchip: video: Add remove() methods

Add remove() methods for EDP and VOP so that U-Boot can shut down the
video on exit. This avoids leaving DMA running while booting Linux which
can cause problems if Linux uses the frame buffer for something else.

It also makes it clear what is needed to shut down video.

While we are here, make rkvop_enable() static.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Squashed in 'rockchip: video: fix taking the VOP device out of standby':
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

drivers/video/rockchip/rk3288_vop.c

diff --git a/drivers/video/rockchip/rk3288_vop.c b/drivers/video/rockchip/rk3288_vop.c
index e3e1ec7..3a5740a 100644
--- a/drivers/video/rockchip/rk3288_vop.c
+++ b/drivers/video/rockchip/rk3288_vop.c
@@ -70,6 +70,19 @@
 	return rk_vop_probe(dev);
 }
 
+static int rk_vop_remove(struct udevice *dev)
+{
+	struct rk_vop_priv *priv = dev_get_priv(dev);
+        struct rk3288_vop *regs = priv->regs;
+
+	setbits_le32(&regs->sys_ctrl, V_STANDBY_EN(1));
+
+	/* wait frame complete (60Hz) to enter standby */
+	mdelay(17);
+
+	return 0;
+}
+
 struct rkvop_driverdata rk3288_driverdata = {
 	.features = VOP_FEATURE_OUTPUT_10BIT,
 	.set_pin_polarity = rk3288_set_pin_polarity,
@@ -91,5 +104,6 @@
 	.ops	= &rk3288_vop_ops,
 	.bind	= rk_vop_bind,
 	.probe	= rk3288_vop_probe,
+        .remove = rk_vop_remove,
 	.priv_auto_alloc_size	= sizeof(struct rk_vop_priv),
 };

drivers/video/rockchip/rk_edp.c

diff --git a/drivers/video/rockchip/rk_edp.c b/drivers/video/rockchip/rk_edp.c
index 4e2030e..1527f96 100644
--- a/drivers/video/rockchip/rk_edp.c
+++ b/drivers/video/rockchip/rk_edp.c
@@ -1004,7 +1004,20 @@
 	return 0;
 }
 
-int rk_edp_probe(struct udevice *dev)
+static int rk_edp_remove(struct udevice *dev)
+{
+	struct rk_edp_priv *priv = dev_get_priv(dev);
+	struct rk3288_edp *regs = priv->regs;
+
+	setbits_le32(&regs->video_ctl_1, VIDEO_MUTE);
+	clrbits_le32(&regs->video_ctl_1, VIDEO_EN);
+	clrbits_le32(&regs->sys_ctl_3, F_HPD | HPD_CTRL);
+	setbits_le32(&regs->func_en_1, SW_FUNC_EN_N);
+
+	return 0;
+}
+
+static int rk_edp_probe(struct udevice *dev)
 {
 	struct display_plat *uc_plat = dev_get_uclass_platdata(dev);
 	struct rk_edp_priv *priv = dev_get_priv(dev);
@@ -1080,5 +1093,6 @@
 	.ops	= &dp_rockchip_ops,
 	.ofdata_to_platdata	= rk_edp_ofdata_to_platdata,
 	.probe	= rk_edp_probe,
+	.remove	= rk_edp_remove,
 	.priv_auto_alloc_size	= sizeof(struct rk_edp_priv),
 };