linux-kernel - [RFC PATCH] drm/rockchip: vop

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Message-Id: <20210131125114.10885-1-jbx6244@gmail.com>
Date:   Sun, 31 Jan 2021 13:51:14 +0100
From:   Johan Jonker <jbx6244@...il.com>
To:     heiko@...ech.de
Cc:     hjc@...k-chips.com, airlied@...ux.ie, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH] drm/rockchip: vop_reg: add rk3036 hdmi support

A Rockchip Inno HDMI driver was added, but the rk3036
VOP regs with HDMI support in the manufacturer tree never
made it to the mainline kernel.
This patch adds only hdmi_en and hdmi_dclk_pol.
The inno hdmi driver must set hdmi_pin_pol in
GRF_SOC_CON2.

Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
Not tested with hardware
---
 drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index 0697057e7..c164690a1 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -147,6 +147,8 @@ static const struct vop_modeset rk3036_modeset = {
 
 static const struct vop_output rk3036_output = {
 	.pin_pol = VOP_REG(RK3036_DSP_CTRL0, 0xf, 4),
+	.hdmi_en = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 22),
+	.hdmi_dclk_pol = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 23),
 };
 
 static const struct vop_common rk3036_common = {
-- 
2.11.0