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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-598f2f37ae8sm5397546e87.15.2025.12.15.01.47.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Dec 2025 01:47:52 -0800 (PST) From: Marcus Folkesson Date: Mon, 15 Dec 2025 10:46:48 +0100 Subject: [PATCH v3 6/7] 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: <20251215-st7571-split-v3-6-d5f3205c3138@gmail.com> References: <20251215-st7571-split-v3-0-d5f3205c3138@gmail.com> In-Reply-To: <20251215-st7571-split-v3-0-d5f3205c3138@gmail.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Javier Martinez Canillas , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Marcus Folkesson X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4431; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=amgEFJwnz1HaLfDD88LjSHq7xWobL4Dq1kG5tCo8neY=; b=owEBbQKS/ZANAwAKAYiATm9ZXVIyAcsmYgBpP9kzx8v9lTk4bvuM/0c4ICiYaSBaKezSAcbDz wy9UVrwhrmJAjMEAAEKAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaT/ZMwAKCRCIgE5vWV1S MtV8D/9L0ZnCX/dauXmH4lxkzkhgDEOiNVZWM8Zxw/hbtKvW9qyHkreeW6w0yCa/dn1EDKzmkHQ kybsdbiPAjYjEhGm+VzPuX98aC6Xab11Urvip8lqoDQLI8CQMWjI+8g6CA0qUULs7EVLsZ8qwoT s8Z6zprUFPSEQs7Lq5bxe51M44iWrvbTi+vrNILsKoodLE9d36/NfOThsRTz8wjddOPqEG+pYRZ PdHasZg2E3UD4ygABuEwGVZ8j4WLdSQYQUpFM/S4Dr9ZbkAWTIIp5sXA1a/1kRwiJ7MNonNv+WI DDvr7ZWPjkJwTLhYJR8O1c1aNG9sJdquH0UKKnYHa98VCjMeEHqH+VqDNPz8xg96Au1x0OSr1pf eqt5v9Lh+mhrdFh6GNOlmxGYzFbR6my9vMj9DTeLc6sLmv9sSWC/URVA9lYaImD5S+36GLndI39 14uwKKvq/V24CxeUNYUMAJ8WHF1Eu9bskLrmmpk7IFfWKqOtYIfI985a7ISWc7h0Ey0IOwMdVRH yJX7Zk9IdtqhEUML1NYcpy6+gSWMmeHxTE7NqvskNGEDNAUMEXSbqwuFFW4fEfG9kLV/AHQpwKz M+PB2fsHYwCplOJXS36DTf6nAk7d1pk9rtw9B0kHRw48HWvLmaH5neswiDiLcZT72jlzza82wg5 0eDft+CrI/KsqxA== X-Developer-Key: i=marcus.folkesson@gmail.com; a=openpgp; fpr=AB91D46C7E0F6E6FB2AB640EC0FE25D598F6C127 Add support for ST7561/ST7571 connected to SPI bus. Reviewed-by: Javier Martinez Canillas 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 4b59960fa3a9..250251ab1a8c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8106,6 +8106,7 @@ 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 203c53fff402..56f257e16d1c 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 8073bb776ff9..c631e3359c3d 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 000000000000..0206e9162f1c --- /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 2.51.2