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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3109084d9d0sm19475141fa.97.2025.04.23.12.03.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Apr 2025 12:03:44 -0700 (PDT) From: Marcus Folkesson Date: Wed, 23 Apr 2025 21:03:20 +0200 Subject: [PATCH v6 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: <20250423-st7571-v6-1-e9519e3c4ec4@gmail.com> References: <20250423-st7571-v6-0-e9519e3c4ec4@gmail.com> In-Reply-To: <20250423-st7571-v6-0-e9519e3c4ec4@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 , Conor Dooley , Javier Martinez Canillas , Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2443; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=YB3U1vGWiGbGv/SZx3xK3oLfCX1vsYzknR/aXytg8xc=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBoCTl/qZH/tsu2jjI4XQEggmBnixfzIpp8xX6gc 2vkbdn4cWOJAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaAk5fwAKCRCIgE5vWV1S MmpFD/4uqUYIyR02el2J/y9lrf96YQJlG22nGZUYBU+0dzQExzz+s2HD97/k1jxnlLA5jYHq3VX 1NGEWQSIfx9iFNlcApMkYpQd20qorhWdK/lYHJbyJ7mRO/4lnlthVaDYHdFKuxSMwl6hstl3MjF jmU/rr1WYwIqLf77SjOkTQlMp59LeXgR35JW1buHGCMzObgcZfV6JzQ3IhJidy3e2ZXHoM+hhlA GX7G8dgRSBDkslab61I1mx5Wp6yeVmGcqBTT8Vg+dyrXlOpyVzrF3wJPMGg9g8g0M+Ma3C7P+cP 3UTs7iHUzbxcYL4twXz3ag0L5q0z2C67wK48oL5fZPFMG/qZtGroAbGCZ7xLE8FMEvf34a6oeSr Umvr2pRQhwK3u0A2Sf/F6M49zM3XGatAPItW2CDRY0CwjzQGwvPjrRqukkkc+amKo2CvDxK0hy1 D+jd2cnKUIWfYJxqCrkSoS5O7XgUki4yYzD2rNN07R9cvT4ntWI0CDd93PI9yawOizKI9ebmJCa JqbFtBYLqvvKc0KH/CGNGH0utqHl62pPtayw47WoRcnqOdxhZD9dt+ghE81GRI14xi7Aw98NR1b coqbu+tTfRy/1p890wanPI9toDUffw0taFi3iavhvX6Zrtzn6EFaW+jrkbz04xKvWmpXgAebRit gIAz+eydJtAZxhw== 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. Reviewed-by: Conor Dooley Reviewed-by: Javier Martinez Canillas Reviewed-by: Krzysztof Kozlowski 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..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>; + #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 Fri Dec 19 06:18:09 2025 Received: from mail-lf1-f43.google.com (mail-lf1-f43.google.com [209.85.167.43]) (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 7C66D29114C; Wed, 23 Apr 2025 19:03:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745435032; cv=none; b=a6n8tvBc8RPEQKjG+GM9WFeoH+641+DWTCawauyAr7gwxgJTZi+3XWhvPPN0/xSCkNU9ATto1ayjG2w+2ocPSBP15+3TSEN3HFYzA0tV1Qu+yRSSd9Fgt3/Iwdx07oSw7SCnVFdUfcNMoBbD+MScqvaLv3Am/cm2tMrX4a5vbDg= ARC-Message-Signature: i=1; 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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3109084d9d0sm19475141fa.97.2025.04.23.12.03.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Apr 2025 12:03:46 -0700 (PDT) From: Marcus Folkesson Date: Wed, 23 Apr 2025 21:03:21 +0200 Subject: [PATCH v6 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: <20250423-st7571-v6-2-e9519e3c4ec4@gmail.com> References: <20250423-st7571-v6-0-e9519e3c4ec4@gmail.com> In-Reply-To: <20250423-st7571-v6-0-e9519e3c4ec4@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 , Javier Martinez Canillas X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=32417; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=Cg2N+muIdlGnOsxeYphUmn1BbkakAyypDA/AY3V6ZjU=; b=owEBbQKS/ZANAwAIAYiATm9ZXVIyAcsmYgBoCTmEFL9u/6ra/k72tiKpafb1lseFIs3MnVD0i qlnuXFCuB+JAjMEAAEIAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaAk5hAAKCRCIgE5vWV1S MryeEADdGzRmZcK1mexzOsphNcyCxW92kk78avG+o19B4tE6wSBhjrPBRVCYikWfWH1sQf1IC4x iOoZEJ4nzZJ9JIuokAXf02NDu+ev4l9Bjq0aUFtk+54frBSsmvklqtueLl2wzs6SovpKsJKSgc0 U+9UmGZTMmUuE42521ej643eD6tc5idNvqQntWU/UOKRMfWKGSQEQ50yH5umTCMKoqG5ZLKLoc2 7K4VeI9CdHRxM1Ph/lugtrPygDp5IQFbSJi/bO2Gwyn/OMQE3kyBUgwCoWUzERJTFT3w7ed09gH Z9cVAKqhegNdtms4ZB3kEB+WU05RNnAtxZOo2LhwD62HZA9XrNcmhYqaBEroHrcq8KqNHFXCswa AEX3UoWE01d2Xy3CrzoETxmHGAc/OOoDeh+5ouwUkCVCnzpZUzCf1TDyoce45zEulqWpsTumpId +zrvv4rGoaew+3mw2bP81vVN74NstBbZN/DPNgXKiNYnGuk7PqRMahzqOxiZqpRc99GKOMCad5k MLcY2/WQxmLL0GG6Q6gQ9yp3zT7r3+e7I23m0YoQdv5xDBIZx2MJTgOgvoujKY6yt+MgVuVq6/+ PTxyNbfqvwidzhpdkOj/Uow8AOFHBpZXsj9ENNJ8PD6yGw2040ZegtDqc2U3i2CP23CX8+yH1um sJiPmUJEOCS98Cw== 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 Reviewed-by: Javier Martinez Canillas Signed-off-by: Marcus Folkesson --- drivers/gpu/drm/tiny/Kconfig | 11 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/st7571-i2c.c | 1002 +++++++++++++++++++++++++++++++++= ++++ 3 files changed, 1014 insertions(+) diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig index 95c1457d773099b4460e4adb872ed8bc64f1f282..9fa333709828f78f5fe5639f7ce= 40117455ff046 100644 --- a/drivers/gpu/drm/tiny/Kconfig +++ b/drivers/gpu/drm/tiny/Kconfig @@ -212,6 +212,17 @@ 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 ba4a60bb72bdfb24c910e4992cab5047d4f9136d..0151590db5cbd80aebde0629afd= 03f47b83c3045 100644 --- a/drivers/gpu/drm/tiny/Makefile +++ b/drivers/gpu/drm/tiny/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_DRM_BOCHS) +=3D bochs.o obj-$(CONFIG_DRM_CIRRUS_QEMU) +=3D cirrus-qemu.o obj-$(CONFIG_DRM_GM12U320) +=3D gm12u320.o obj-$(CONFIG_DRM_PANEL_MIPI_DBI) +=3D panel-mipi-dbi.o +obj-$(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..ba089a7e2b617ce6b0dc67848c1= 48b88245a2247 --- /dev/null +++ b/drivers/gpu/drm/tiny/st7571-i2c.c @@ -0,0 +1,1002 @@ +// 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 + +#include