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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54d3d238820sm1325471e87.80.2025.04.14.22.59.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Apr 2025 22:59:23 -0700 (PDT) From: Marcus Folkesson Date: Tue, 15 Apr 2025 07:58:58 +0200 Subject: [PATCH v4 1/3] dt-bindings: display: Add 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: <20250415-st7571-v4-1-8b5c9be8bae7@gmail.com> References: <20250415-st7571-v4-0-8b5c9be8bae7@gmail.com> In-Reply-To: <20250415-st7571-v4-0-8b5c9be8bae7@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=2260; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=ErAJptKe6TjqvTV7sbXPcZTT3k+iErgPyt0n2TpvVKQ=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBn/fWo0zd25bxNICZsEqGnaKpkxFttyKHkD+lWq BFLvieFhgmJAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCZ/31qAAKCRCIgE5vWV1S MhVyD/wPRR1pC3Uih9CKvymXMl51XJr6AUsF8qCTwS7srgLpRjrVa+DTNTnhsNOZIYv6grdL9qE pHDnF5CdwkygG4ppbiXIF46jWOLPQKv4pV29gkIMezHZcSQ5IYSlIOPMu73EgQQ2coRjFzpiI3+ pGv1UQD/a1vMJETYPetDDdRgXGc8BxQzcPiopigxd7f81XQyYvDp3gMGXz6qMxDGN/UlS2qNgtb JrLFhK0lWHS6Mm0kgq+7gT0Jv25SXENfkcSUOgbfk9+ntovHDIkqmKwa3U0RDsF+eh7+TYE8jzz Czs2t+cmBZeEfqjSeP40XC/Ldv7pqFXpxihEMDStnc0xO7CfW6GemZMGGhBVH9pIlZ4qywiVGim 7d6JbR3VKvp/uG+HUcs6MTTcOFTXZ1pnwGlDtvad9L2+9opiFzeTxYB8vOh4YXJu7Lsxc/MQnLw fXW2WD/TuQ74sUY586UCiGO0eEcox53Vi5VuzMqRzX7vp/WvN8ddTe/pt+RSTZjhbiky5E53bTa o+LfBNUcBAPmPzFrlwtjWaGfSSS9XaQLOewieizjBShkQfiFCCp+2TFKlFC3o8VQFp3PrPJNJSm Z0D3JIsrDsmtNZZm2d/kX8PqenqkllBtfX0WY1sYSAT9Mx1B9Z5zhGgFUd4DBayrmreEWKCY089 VxjTrrNmMbMcDeg== X-Developer-Key: i=marcus.folkesson@gmail.com; a=openpgp; fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127 Sitronix ST7571 is a dot matrix LCD controller supporting both 4bit grayscale and monochrome LCDs. Signed-off-by: Marcus Folkesson Reviewed-by: Javier Martinez Canillas Reviewed-by: Krzysztof Kozlowski --- .../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..4fea782fccd701f5095a08290c1= 3722a12a58b52 --- /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 Controller + +maintainers: + - Marcus Folkesson + +description: + Sitronix ST7571 is a driver and controller for 4-level gray + scale and monochrome dot matrix LCD panels. + +allOf: + - $ref: panel/panel-common.yaml# + +properties: + compatible: + const: sitronix,st7571 + + reg: + maxItems: 1 + + sitronix,grayscale: + type: boolean + description: + Display supports 4-level grayscale. + + reset-gpios: true + width-mm: true + height-mm: true + panel-timing: true + +required: + - compatible + - reg + - reset-gpios + - width-mm + - height-mm + - panel-timing + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells =3D <1>; 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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-54d3d238820sm1325471e87.80.2025.04.14.22.59.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Apr 2025 22:59:25 -0700 (PDT) From: Marcus Folkesson Date: Tue, 15 Apr 2025 07:58:59 +0200 Subject: [PATCH v4 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: <20250415-st7571-v4-2-8b5c9be8bae7@gmail.com> References: <20250415-st7571-v4-0-8b5c9be8bae7@gmail.com> In-Reply-To: <20250415-st7571-v4-0-8b5c9be8bae7@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 , Thomas Zimmermann X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=31546; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=T1TCGYvHGsM2ghRYBSLAW+wRA0rxN0axEF2r/HSnnJA=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBn/fWtJntGPFdNwxhEKQwKFlprQZd06zU6r4Yuj HhQ5NJTSFqJAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCZ/31rQAKCRCIgE5vWV1S MqM1EADPy2gNtsboVmeny5LSmnwSo75dVU3kptnCIv9cepXfgxvGuLNFFiEJiRnnoVp9wEB/lP+ bojEWbOUZUi5XymIdKVA7b9yUg/ZA5O3u/zvDY8vFUGggVypS2mpUxUZSR+bJTHJo/zUnIhYr8q SMuc3nL1YFfu1TWNCoeAUpK89z7lhMM2oDGaYYPLli6f9JUEOOKgEVcmS7cVGyHEvNPdJ3lOEaJ khD4BdO3iWzLjQhsQqcrsuh7q0nbZy/lbVB/CRpw/aDjcwnvwIhWyKCE/2LML2edeQ3vdyYhhrx 6ulaZLFMz9SPJtDw+drzD92ymiWYD+xf3mrCOxSmR9pFBBVaLuqifCPWRBO1jMmphuvm93bQBbB 0CcWgrGdlEs4BLTVDidB4NLaJK2VJCzhkg2VuK+Xho9TSrXwEQQH1KfkV0AIvx/os+iJf8Cecnz 3n2cp+af3+PWSW5qzmaigGeBi7U5Ay1oHf8TWspxzHtIMpHm5pCgBa/mp05J+3mJAoINRxwzNZt 3TIDg6vSV9BbrjvtvB/H03uq5eXzY7+jD7emftzV9jmOVdDAiEHvt8MDWgrm+MRVtzmMpEdxTbh vCejDwb3uTG3UGOHQp5j5ryb6+MrOPwwQt4J7PwHHp9dXpDAc91tVRXjEd0uaVoFBaqI+Ho8co5 is04t4V+wqWACxg== 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. Reviewed-by: Thomas Zimmermann Signed-off-by: Marcus Folkesson Reviewed-by: Javier Martinez Canillas --- drivers/gpu/drm/tiny/Kconfig | 11 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/st7571-i2c.c | 994 ++++++++++++++++++++++++++++++++++= ++++ 3 files changed, 1006 insertions(+) diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index 94cbdb1337c07f1628a33599a7130369b9d59d98..e4a55482e3bcd3f6851df1d322a= 14cbe1f96adfb 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 DRM_ST7571_I2C + tristate "DRM support for Sitronix ST7571 display panels (I2C)" + depends on DRM && I2C && MMU + select DRM_GEM_SHMEM_HELPER + select DRM_KMS_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..eab7568c92c880cfdf7c2f0b9c4= bfac4685dbe95 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_DRM_GM12U320) +=3D gm12u320.o obj-$(CONFIG_DRM_OFDRM) +=3D ofdrm.o obj-$(CONFIG_DRM_PANEL_MIPI_DBI) +=3D panel-mipi-dbi.o obj-$(CONFIG_DRM_SIMPLEDRM) +=3D simpledrm.o +obj-$(CONFIG_DRM_ST7571_I2C) +=3D st7571-i2c.o obj-$(CONFIG_TINYDRM_HX8357D) +=3D hx8357d.o obj-$(CONFIG_TINYDRM_ILI9163) +=3D ili9163.o obj-$(CONFIG_TINYDRM_ILI9225) +=3D ili9225.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..97a8285a6fa60759bdb7018cc46= 663634afc88ae --- /dev/null +++ b/drivers/gpu/drm/tiny/st7571-i2c.c @@ -0,0 +1,994 @@ +// 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