Check whether a display device is in use before using it. Add a comment as to why two displays cannot currently be used at the same time.
This allows us to remove the device-tree change that disables vopb on jerry.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/arm/dts/rk3288-jerry.dts | 5 ----- arch/arm/dts/rk3288-veyron-chromebook.dtsi | 2 ++ drivers/video/rockchip/rk_vop.c | 9 +++++++++ 3 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/arch/arm/dts/rk3288-jerry.dts b/arch/arm/dts/rk3288-jerry.dts index 2aa3b9f..da37ea8 100644 --- a/arch/arm/dts/rk3288-jerry.dts +++ b/arch/arm/dts/rk3288-jerry.dts @@ -108,11 +108,6 @@ pinctrl-0 = <&vcc50_hdmi_en>; };
-&vopb { - /* Disable this so that we use vopl */ - status = "disabled"; -}; - &edp { pinctrl-names = "default"; pinctrl-0 = <&edp_hpd>; diff --git a/arch/arm/dts/rk3288-veyron-chromebook.dtsi b/arch/arm/dts/rk3288-veyron-chromebook.dtsi index bbbc2f4..f88a868 100644 --- a/arch/arm/dts/rk3288-veyron-chromebook.dtsi +++ b/arch/arm/dts/rk3288-veyron-chromebook.dtsi @@ -13,6 +13,8 @@ / { aliases { i2c20 = &i2c_tunnel; + video0 = &vopl; + video1 = &vopb; };
gpio_keys: gpio-keys { diff --git a/drivers/video/rockchip/rk_vop.c b/drivers/video/rockchip/rk_vop.c index 130dace..eab5486 100644 --- a/drivers/video/rockchip/rk_vop.c +++ b/drivers/video/rockchip/rk_vop.c @@ -221,6 +221,11 @@ int rk_display_init(struct udevice *dev, ulong fbbase,
disp_uc_plat = dev_get_uclass_platdata(disp); debug("Found device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat); + if (display_in_use(disp)) { + debug(" - device in use\n"); + return -EBUSY; + } + disp_uc_plat->source_id = remote_vop_id; disp_uc_plat->src_dev = dev;
@@ -311,6 +316,10 @@ static int rk_vop_probe(struct udevice *dev) /* * Try all the ports until we find one that works. In practice this * tries EDP first if available, then HDMI. + * + * Note that rockchip_vop_set_clk() always uses NPLL as the source + * clock so it is currently not possible to use more than one display + * device simultaneously. */ port = fdt_subnode_offset(blob, dev->of_offset, "port"); if (port < 0)