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drm/bridge: synopsys: Add DW DPTX Controller support library

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The DW DP TX Controller is compliant with the DisplayPort Specification
Version 1.4 with the following features:

* DisplayPort 1.4a
* Main Link: 1/2/4 lanes
* Main Link Support 1.62Gbps, 2.7Gbps, 5.4Gbps and 8.1Gbps
* AUX channel 1Mbps
* Single Stream Transport(SST)
* Multistream Transport (MST)
* Type-C support (alternate mode)
* HDCP 2.2, HDCP 1.3
* Supports up to 8/10 bits per color component
* Supports RBG, YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0
* Pixel clock up to 594MHz
* I2S, SPDIF audio interface

Add library with common helpers to make it can be shared with
other SoC.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250822063959.692098-3-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Andy Yan
2025-08-22 14:39:46 +08:00
committed by Dmitry Baryshkov
parent 2b036b13c8
commit 86eecc3a9c
4 changed files with 2123 additions and 0 deletions
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7
drivers/gpu/drm/bridge/synopsys/Kconfig
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@@ -1,4 +1,11 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_DW_DP
tristate
select DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER
select DRM_KMS_HELPER
select REGMAP_MMIO
config DRM_DW_HDMI
tristate
select DRM_DISPLAY_HDMI_HELPER

1
drivers/gpu/drm/bridge/synopsys/Makefile
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@@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_DRM_DW_DP) += dw-dp.o
obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o
obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o
obj-$(CONFIG_DRM_DW_HDMI_GP_AUDIO) += dw-hdmi-gp-audio.o

2095
drivers/gpu/drm/bridge/synopsys/dw-dp.c Normal file
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File diff suppressed because it is too large Load Diff

20
include/drm/bridge/dw_dp.h Normal file
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@@ -0,0 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2025 Rockchip Electronics Co., Ltd.
*/
#ifndef __DW_DP__
#define __DW_DP__
#include <linux/device.h>
struct drm_encoder;
struct dw_dp;
struct dw_dp_plat_data {
u32 max_link_rate;
};
struct dw_dp *dw_dp_bind(struct device *dev, struct drm_encoder *encoder,
const struct dw_dp_plat_data *plat_data);
#endif /* __DW_DP__ */