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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59301f41ce8sm2210689e87.6.2025.10.27.01.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Oct 2025 01:06:30 -0700 (PDT) From: Marcus Folkesson Date: Mon, 27 Oct 2025 09:05:46 +0100 Subject: [PATCH v2 6/6] drm/sitronix/st7571-spi: add support for SPI interface 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: <20251027-st7571-split-v2-6-8352fb278d21@gmail.com> References: <20251027-st7571-split-v2-0-8352fb278d21@gmail.com> In-Reply-To: <20251027-st7571-split-v2-0-8352fb278d21@gmail.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Marcus Folkesson X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4595; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=eJNHLBmAZOTejS10tlSIgy4paPd/qi4bHheCIJy9qE8=; b=owEBbAKT/ZANAwAKAYiATm9ZXVIyAcsmYgBo/yf3Co4vwEOyvi011P8dYyI0bsvPytCzYrGOd yfDZ4QvJvuJAjIEAAEKAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaP8n9wAKCRCIgE5vWV1S Mv5vD/ixjOJ+YeNK4xcLmrCUCKqvkC+2LwqS6zyZutlEy/nbn6KVNICE/bSVZl7L7BgjF87MJPO 1vtFE/aIaCxir4rMSZGYtyAjt5Zw/jDoMNhK6NS1evkTEC8OsSbu88jDmLS5eFWt6gPjNE4ltvr cCjRohkUALdN3+glUDVZRp54oNF5EDGtpqQDUdxqNdu2jfoaVXjsD0/+Pb65/2Rvkg7lOO8jEPy NgqnxORCgKucD88pOgD8Fk8M+Mmk6QSIdE0mrLKXWppCDH9hCe3KO1OQh/z+BnR5HXtcpOgOmNo 3pAxfqCGdIze3bRvgfZTdAoFYpDV1LUeJi2eh4LN8LGMr78M3Ccu1imK/u3df1JD0UzxbaYOrsq 8b2hzwcmmnjMqY6RbM04Fy1tB2UQ4s5hU3xuRiHlWl4LVXNgrdkSnucQptlupF/gKZM/rX12te+ Paeux/nDIFgO9q9bDkWN5K+z0OCTuyJTZNkK8nR65lzY5zS6aX/iyNY16QZeayY62c8GZY4e7vL 0INP0ztpsanZxYx+RZ55Gccnd7Jq/DwMWfqkJDzBq8u1tvzET/U9r7FVDtkQYH3koPnU+Xm+Lr9 3Sem7wISVATvI8p5gQWBfGukQEMhCv1E8nKmqk0kx0EEBpsCmXYLyFcdKTsT6i6/N9uLBD+Gh3a lye/2zsxEGTtH X-Developer-Key: i=marcus.folkesson@gmail.com; a=openpgp; fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127 Add support for ST7561/ST7571 connected to SPI bus. Signed-off-by: Marcus Folkesson --- MAINTAINERS | 1 + drivers/gpu/drm/sitronix/Kconfig | 12 ++++++ drivers/gpu/drm/sitronix/Makefile | 1 + drivers/gpu/drm/sitronix/st7571-spi.c | 76 +++++++++++++++++++++++++++++++= ++++ 4 files changed, 90 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 66e9ffb757c8bb19dbb894eb51f88f589ee83af6..c89e521cafa1d50fd94bfe7a686= 8c531aec1f494 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8083,6 +8083,7 @@ S: Maintained F: Documentation/devicetree/bindings/display/sitronix,st7567.yaml F: Documentation/devicetree/bindings/display/sitronix,st7571.yaml F: drivers/gpu/drm/sitronix/st7571-i2c.c +F: drivers/gpu/drm/sitronix/st7571-spi.c F: drivers/gpu/drm/sitronix/st7571.c F: drivers/gpu/drm/sitronix/st7571.h =20 diff --git a/drivers/gpu/drm/sitronix/Kconfig b/drivers/gpu/drm/sitronix/Kc= onfig index 0676a86661caa4ab81f226ff2e990a3e2526f74d..2204250ab4136ac2d3f18f295dc= 7413a6e17ed45 100644 --- a/drivers/gpu/drm/sitronix/Kconfig +++ b/drivers/gpu/drm/sitronix/Kconfig @@ -27,6 +27,18 @@ config DRM_ST7571_I2C =20 if M is selected the module will be called st7571-i2c. =20 +config DRM_ST7571_SPI + tristate "DRM support for Sitronix ST7567/ST7571 display panels (SPI)" + depends on DRM_ST7571 && SPI + select REGMAP_SPI + help + Sitronix ST7571 is a driver and controller for 4-level gray + scale and monochrome dot matrix LCD panels. + + DRM driver for Sitronix ST7565/ST7571 panels connected via SPI bus. + + if M is selected the module will be called st7571-spi. + config DRM_ST7586 tristate "DRM support for Sitronix ST7586 display panels" depends on DRM && SPI diff --git a/drivers/gpu/drm/sitronix/Makefile b/drivers/gpu/drm/sitronix/M= akefile index 8073bb776ff94de750f350b636fd9db3d54fdd46..c631e3359c3dc21ab8522b8f0cf= e6e9bf0dbc011 100644 --- a/drivers/gpu/drm/sitronix/Makefile +++ b/drivers/gpu/drm/sitronix/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_DRM_ST7571) +=3D st7571.o obj-$(CONFIG_DRM_ST7571_I2C) +=3D st7571-i2c.o +obj-$(CONFIG_DRM_ST7571_SPI) +=3D st7571-spi.o obj-$(CONFIG_DRM_ST7586) +=3D st7586.o obj-$(CONFIG_DRM_ST7735R) +=3D st7735r.o diff --git a/drivers/gpu/drm/sitronix/st7571-spi.c b/drivers/gpu/drm/sitron= ix/st7571-spi.c new file mode 100644 index 0000000000000000000000000000000000000000..0206e9162f1cd6ecbb315671eaa= d8850504530af --- /dev/null +++ b/drivers/gpu/drm/sitronix/st7571-spi.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Sitronix ST7571 connected via SPI bus. + * + * Copyright (C) 2025 Marcus Folkesson + */ + +#include +#include +#include + +#include "st7571.h" + +static const struct regmap_config st7571_spi_regmap_config =3D { + .reg_bits =3D 8, + .val_bits =3D 8, + .can_multi_write =3D true, +}; + +static int st7571_spi_probe(struct spi_device *spi) +{ + struct st7571_device *st7571; + struct regmap *regmap; + + regmap =3D devm_regmap_init_spi(spi, &st7571_spi_regmap_config); + if (IS_ERR(regmap)) { + return dev_err_probe(&spi->dev, PTR_ERR(regmap), + "Failed to initialize regmap\n"); + } + + st7571 =3D st7571_probe(&spi->dev, regmap); + if (IS_ERR(st7571)) + return dev_err_probe(&spi->dev, PTR_ERR(st7571), + "Failed to initialize regmap\n"); + + spi_set_drvdata(spi, st7571); + return 0; +} + +static void st7571_spi_remove(struct spi_device *spi) +{ + struct st7571_device *st7571 =3D spi_get_drvdata(spi); + + st7571_remove(st7571); +} + +static const struct of_device_id st7571_of_match[] =3D { + { .compatible =3D "sitronix,st7567", .data =3D &st7567_config }, + { .compatible =3D "sitronix,st7571", .data =3D &st7571_config }, + {}, +}; +MODULE_DEVICE_TABLE(of, st7571_of_match); + +static const struct spi_device_id st7571_spi_id[] =3D { + { "st7567", 0 }, + { "st7571", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, st7571_spi_id); + +static struct spi_driver st7571_spi_driver =3D { + .driver =3D { + .name =3D "st7571-spi", + .of_match_table =3D st7571_of_match, + }, + .probe =3D st7571_spi_probe, + .remove =3D st7571_spi_remove, + .id_table =3D st7571_spi_id, +}; + +module_spi_driver(st7571_spi_driver); + +MODULE_AUTHOR("Marcus Folkesson "); +MODULE_DESCRIPTION("DRM Driver for Sitronix ST7571 LCD controller (SPI)"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("DRM_ST7571"); --=20 2.50.1