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([103.218.174.23]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ba901e312a2sm15200222a12.31.2025.11.11.02.43.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Nov 2025 02:43:17 -0800 (PST) From: Sudarshan Shetty To: neil.armstrong@linaro.org, jessica.zhang@oss.qualcomm.com Cc: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sudarshan Shetty Subject: [PATCH v1] drm: panel: Add Waveshare MIPI-DSI panel driver Date: Tue, 11 Nov 2025 16:13:09 +0530 Message-Id: <20251111104309.3424018-1-tessolveupstream@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This patch adds a DRM panel driver for Waveshare MIPI-DSI panels of various sizes (5.0", 5.5", 7.0", 8.0", and 10.1") with integrated touch functionality. The driver provides: - Initialization and reset sequencing - MIPI-DSI command transfer for panel setup - Backlight integration through the backlight class device - Support for multiple panel variants via compatible strings These panels are commonly used with Waveshare development kits and require proper power sequencing and regulator support. Signed-off-by: Sudarshan Shetty --- arch/arm64/configs/defconfig | 1 + drivers/gpu/drm/panel/Kconfig | 11 + drivers/gpu/drm/panel/Makefile | 1 + .../gpu/drm/panel/panel-waveshare-dsi-v2.c | 2687 +++++++++++++++++ 4 files changed, 2700 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-waveshare-dsi-v2.c diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index a1e564024be2..178c8699f86c 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -1823,4 +1823,5 @@ CONFIG_CORESIGHT_STM=3Dm CONFIG_CORESIGHT_CPU_DEBUG=3Dm CONFIG_CORESIGHT_CTI=3Dm CONFIG_MEMTEST=3Dy +CONFIG_DRM_PANEL_WAVESHARE_TOUCHSCREEN_V2=3Dy CONFIG_REGULATOR_WAVESHARE_TOUCHSCREEN=3Dy diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 407c5f6a268b..b771817af8f8 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -1137,6 +1137,17 @@ config DRM_PANEL_VISIONOX_VTDR6130 Say Y here if you want to enable support for Visionox VTDR6130 1080x2400 AMOLED DSI panel. =20 +config DRM_PANEL_WAVESHARE_TOUCHSCREEN_V2 + tristate "Waveshare touchscreen panels V2" + depends on DRM_MIPI_DSI + depends on I2C + depends on BACKLIGHT_CLASS_DEVICE + help + Enable support for Waveshare DSI touchscreen panels, + Say Y here if you want to enable support for the Waveshare + DSI Touchscreens. To compile this driver as a module, + choose M here. + config DRM_PANEL_WIDECHIPS_WS2401 tristate "Widechips WS2401 DPI panel driver" depends on SPI && GPIOLIB diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 3615a761b44f..3947e28addde 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -114,5 +114,6 @@ obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) +=3D panel-vis= ionox-rm69299.o obj-$(CONFIG_DRM_PANEL_VISIONOX_RM692E5) +=3D panel-visionox-rm692e5.o obj-$(CONFIG_DRM_PANEL_VISIONOX_VTDR6130) +=3D panel-visionox-vtdr6130.o obj-$(CONFIG_DRM_PANEL_VISIONOX_R66451) +=3D panel-visionox-r66451.o +obj-$(CONFIG_DRM_PANEL_WAVESHARE_TOUCHSCREEN_V2) +=3D panel-waveshare-dsi-= v2.o obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) +=3D panel-widechips-ws2401.o obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) +=3D panel-xinpeng-xpp055c272.o diff --git a/drivers/gpu/drm/panel/panel-waveshare-dsi-v2.c b/drivers/gpu/d= rm/panel/panel-waveshare-dsi-v2.c new file mode 100644 index 000000000000..7af11fdc026f --- /dev/null +++ b/drivers/gpu/drm/panel/panel-waveshare-dsi-v2.c @@ -0,0 +1,2687 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Waveshare International Limited + * + * Based on panel-raspberrypi-touchscreen by Broadcom + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#include