linux-kernel - [PATCH v4 02/29] drm/rockchip: vop: Add output selection registers for RK312x

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Date: Fri, 22 Dec 2023 18:41:53 +0100
From: Alex Bee <knaerzche@...il.com>
To: Sandy Huang <hjc@...k-chips.com>,
	Heiko Stübner <heiko@...ech.de>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Alex Bee <knaerzche@...il.com>
Subject: [PATCH v4 02/29] drm/rockchip: vop: Add output selection registers for RK312x

In contrast to RK3036, RK312x SoCs have multiple output channels such as
RGB (i.e. LVDS TTL), LVDS, DSI and HDMI.

In order to support that, this splits output from RK3036 and defines an
separate one for RK3126 with the registers required to enable the
appropriate output and setup the correct polarity.

Signed-off-by: Alex Bee <knaerzche@...il.com>
---
changes in v2:
 - rephrase commit message

changes in v3:
 - none

changes in v4:
 - none

 drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 13 ++++++++++++-
 drivers/gpu/drm/rockchip/rockchip_vop_reg.h |  3 +++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index c51ca82320cb..b9ee02061d5b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -227,11 +227,22 @@ static const struct vop_win_data rk3126_vop_win_data[] = {
 	  .type = DRM_PLANE_TYPE_CURSOR },
 };
 
+static const struct vop_output rk3126_output = {
+	.pin_pol = VOP_REG(RK3036_DSP_CTRL0, 0xf, 4),
+	.hdmi_pin_pol = VOP_REG(RK3126_INT_SCALER, 0x7, 4),
+	.hdmi_en = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 22),
+	.hdmi_dclk_pol = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 23),
+	.rgb_en = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 24),
+	.rgb_dclk_pol = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 25),
+	.mipi_en = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 28),
+	.mipi_dclk_pol = VOP_REG(RK3036_AXI_BUS_CTRL, 0x1, 29),
+};
+
 static const struct vop_data rk3126_vop = {
 	.intr = &rk3036_intr,
 	.common = &rk3036_common,
 	.modeset = &rk3036_modeset,
-	.output = &rk3036_output,
+	.output = &rk3126_output,
 	.win = rk3126_vop_win_data,
 	.win_size = ARRAY_SIZE(rk3126_vop_win_data),
 	.max_output = { 1920, 1080 },
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.h b/drivers/gpu/drm/rockchip/rockchip_vop_reg.h
index 406e981c75bd..fbf1bcc68625 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.h
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.h
@@ -872,6 +872,9 @@
 /* rk3036 register definition end */
 
 /* rk3126 register definition */
+#define RK3126_INT_SCALER		0x0c
+
+/* win1 register */
 #define RK3126_WIN1_MST			0x4c
 #define RK3126_WIN1_DSP_INFO		0x50
 #define RK3126_WIN1_DSP_ST		0x54
-- 
2.43.0