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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54c1e635c7dsm436687e87.144.2025.04.04.06.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Apr 2025 06:50:58 -0700 (PDT) From: Marcus Folkesson Date: Fri, 04 Apr 2025 15:50:32 +0200 Subject: [PATCH v2 1/3] dt-bindings: display: Add Sitronix ST7571 panel Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250404-st7571-v2-1-4c78aab9cd5a@gmail.com> References: <20250404-st7571-v2-0-4c78aab9cd5a@gmail.com> In-Reply-To: <20250404-st7571-v2-0-4c78aab9cd5a@gmail.com> To: David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Marcus Folkesson X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2483; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=dTeNBuF92gWicEQve9HvfkFWbBeFaR0CZPu1dkMadRI=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBn7+Ox6WSnTaTLBN+nhOZdUI1lP4wWs1Ag8cKq4 H9/WQry65KJAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCZ+/jsQAKCRCIgE5vWV1S MrBLD/9jdfQW7cH75jvbHn7mXtz0l/UZuTKvVvBku4E9JL9Le1A6oq8G2wZERMupZx/dnia1uze AULVrB4sBO11MQI2uwCP3Eh4ufM1oCp9MDF4EFRDh0zNQr0a8BpGEntsohjMykSKNm772VLQZQH qpKS4nXszHyuAWThmYMludUXOg5qpLjI954ZjdP0xLjk4bWVlC2dCQugpKH4uckiO2uqyrEOn5j V9thWNQQfARC/ORm8JiDKOfczWz9o3D+/Tf43KjRR03lmcd1tcG/Vhvv3L3DabcEsNoDcbh77dP I06fL9MOc+D2HZGexEDDq+d7UgO2VjktbGCIDL6QzLhqEgXOACQ2crpQs97RbAdY8aL678lIEe9 bYUfmeKEne7LilXVZiX7A8MFZTctjnQ8HE72dvwmuUJmLdC703HCkQGXKEsw1PryNwOLUFa7MGE SeV5E5p1rDQ7Ao56+a9ziYlQLgI+6twUgvJr5ep6NTdpSQfFe5+kg578fOBdpQsG9lN9jhkuqZN VsCpDDjlJEL5XUVALcBkZxUzWdPvU6HcDgjf7SZUP44V82PE/bJlfVbPGFpw5+PS7UaMkI9zrs9 szoLVigdme+HNDiyGjPJP/Yx2+Ox75K3Hn08YnbKlOZO4xy5Z4vsO0TplzLd26hGAFIcjoMOFCr v2Ilff0Pzryp/Hw== X-Developer-Key: i=marcus.folkesson@gmail.com; a=openpgp; fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127 Sitronix ST7571 is a 4bit gray scale dot matrix LCD controller. Signed-off-by: Marcus Folkesson --- .../bindings/display/sitronix,st7571.yaml | 73 ++++++++++++++++++= ++++ 1 file changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/display/sitronix,st7571.yaml= b/Documentation/devicetree/bindings/display/sitronix,st7571.yaml new file mode 100644 index 0000000000000000000000000000000000000000..11575b820c59c5ada427fbb6b01= 5c331215c8db6 --- /dev/null +++ b/Documentation/devicetree/bindings/display/sitronix,st7571.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/sitronix,st7571.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sitronix ST7571 Display Panels + +maintainers: + - Marcus Folkesson + +description: + This binding is for display panels using a Sitronix ST7571 controller in= I2C + mode. + +allOf: + - $ref: panel/panel-common.yaml# + +properties: + compatible: + const: sitronix,st7571 + + reg: true + reset-gpios: true + width-mm: true + height-mm: true + + panel-timing: + $ref: panel/panel-timing.yaml# + description: | + The panel-timing node specifies the display resolution and timing + parameters. The hactive and vactive properties are mandatory. + The vback-porch property specifies the start line of the display. + The other properties should be set to zero. + +required: + - compatible + - reg + - reset-gpios + - width-mm + - height-mm + - panel-timing + +additionalProperties: false + +examples: + - | + #include + =20 + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + display@3f { + compatible =3D "sitronix,st7571"; + reg =3D <0x3f>; + reset-gpios =3D <&gpio0 3 GPIO_ACTIVE_LOW>; + width-mm =3D <37>; + height-mm =3D <27>; + + panel-timing { + hactive =3D <128>; + vactive =3D <96>; + hback-porch =3D <0>; + vback-porch =3D <0>; + clock-frequency =3D <0>; + hfront-porch =3D <0>; + hsync-len =3D <0>; + vfront-porch =3D <0>; + vsync-len =3D <0>; + }; + }; + }; --=20 2.49.0 From nobody Sat Feb 7 11:05:18 2026 Received: from mail-lf1-f53.google.com (mail-lf1-f53.google.com [209.85.167.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA3B61F3B8C; 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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54c1e635c7dsm436687e87.144.2025.04.04.06.50.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Apr 2025 06:50:59 -0700 (PDT) From: Marcus Folkesson Date: Fri, 04 Apr 2025 15:50:33 +0200 Subject: [PATCH v2 2/3] drm/st7571-i2c: add support for Sitronix ST7571 LCD controller Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250404-st7571-v2-2-4c78aab9cd5a@gmail.com> References: <20250404-st7571-v2-0-4c78aab9cd5a@gmail.com> In-Reply-To: <20250404-st7571-v2-0-4c78aab9cd5a@gmail.com> To: David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Marcus Folkesson X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=22618; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=X4W7yRod4eyz7LxkAwDKzkROjYYkZiMZ1ThV40BXHAQ=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBn7+O2WRskSfLVu060byALkeuckFirjpyBXe2P8 yAYxy51AlSJAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCZ+/jtgAKCRCIgE5vWV1S MgI/D/4npsQCqZD0Gkmdi6lt/76XIK2BrPveazwMv7gKjvbhCst/148ZOR0RO52mUITrCwv1f7t wtqCVjESDCLbVKVGIAYSJFItwqshW2Zjw3G27aJ+m3a5I9pO66hcjxtWfItRFJz668E95ZFnkkh 6vsTWhQmOhMYfSbpdqD6Od3Qzy/kbzZzGYOr0g0iVpxRYM+Id/hmKb6tICWeBOoKuVgmvywWsPX OH+LE5PBnC2x22y9yzBz2aOfpJ8K4KAuZNeY/saLXvlc00FyFOKetq+HqVIOiyG7hsVeUxUkb5h PdM/lur26LHOjESAX1KI9PYKFwkWykYoI1gKVQdX0OnB9ZSykCKxJt8oWmbjmjLbKk2lLkMG5kx gVaK8q8mPgzjG9mM+G57ceeAjtj0KYq1MLaM7rpDf3V6Eku3RBBu1eJpUDXR4E7ldT0dg7Gxrnw CmAmRjJ++hsUGZM2dLpe4AiDycSKAgTClbRZCT+eUPxgJjdPDfZjY0QnsGDBzUMrwcxBQ0ngZgi qJFsyUs8/n83uzmP/9ahPaK2vBKwI59RnfvDPaN2OyCMElWSnaDs/1VnOSC7OTVdUxzeJ7Fi5mH eEuaGG3fBZg42FPiV9WWQrKPtEybjERHIXdyGBXe9MJdBa63tcnmdh0cuKb7ecR8dMWoZEp8oFo Alnk5T/u4Tnt+tA== X-Developer-Key: i=marcus.folkesson@gmail.com; a=openpgp; fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127 Sitronix ST7571 is a 4bit gray scale dot matrix LCD controller. The controller has a SPI, I2C and 8bit parallel interface, this driver is for the I2C interface only. Signed-off-by: Marcus Folkesson Reviewed-by: Thomas Zimmermann --- drivers/gpu/drm/tiny/Kconfig | 11 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/st7571-i2c.c | 720 ++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 732 insertions(+) diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index 94cbdb1337c07f1628a33599a7130369b9d59d98..6c711f4b799e05a8edc8e5fd68d= e0542d9cb6cab 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -232,6 +232,17 @@ config TINYDRM_ST7586 =20 If M is selected the module will be called st7586. =20 +config TINYDRM_ST7571_I2C + tristate "DRM support for Sitronix ST7571 display panels (I2C)" + depends on DRM && I2C + select DRM_KMS_HELPER + select DRM_GEM_SHMEM_HELPER + select REGMAP_I2C + help + DRM driver for Sitronix ST7571 panels controlled over I2C. + + if M is selected the module will be called st7571-i2c. + config TINYDRM_ST7735R tristate "DRM support for Sitronix ST7715R/ST7735R display panels" depends on DRM && SPI diff --git a/drivers/gpu/drm/tiny/Makefile b/drivers/gpu/drm/tiny/Makefile index 60816d2eb4ff93b87228ed8eadd60a0a33a1144b..ed767dd9d22b3bb98f50fa2007c= ad7fb3f3d95e4 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -15,5 +15,6 @@ obj-$(CONFIG_TINYDRM_ILI9486) +=3D ili9486.o obj-$(CONFIG_TINYDRM_MI0283QT) +=3D mi0283qt.o obj-$(CONFIG_TINYDRM_REPAPER) +=3D repaper.o obj-$(CONFIG_TINYDRM_SHARP_MEMORY) +=3D sharp-memory.o +obj-$(CONFIG_TINYDRM_ST7571_I2C) +=3D st7571-i2c.o obj-$(CONFIG_TINYDRM_ST7586) +=3D st7586.o obj-$(CONFIG_TINYDRM_ST7735R) +=3D st7735r.o diff --git a/drivers/gpu/drm/tiny/st7571-i2c.c b/drivers/gpu/drm/tiny/st757= 1-i2c.c new file mode 100644 index 0000000000000000000000000000000000000000..196ecd662c73dfaa9940fc601a6= 56305c81a1619 --- /dev/null +++ b/drivers/gpu/drm/tiny/st7571-i2c.c @@ -0,0 +1,720 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Sitronix ST7571, a 4 level gray scale dot matrix LCD control= ler + * + * Copyright (C) 2025 Marcus Folkesson + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include