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[83.233.6.197]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-595803b77e5sm2982498e87.42.2025.11.17.01.04.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Nov 2025 01:04:26 -0800 (PST) From: Marcus Folkesson Date: Mon, 17 Nov 2025 10:03:48 +0100 Subject: [PATCH RESEND 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: 7bit Message-Id: <20251117-st7571-split-v2-6-13189da95265@gmail.com> References: <20251117-st7571-split-v2-0-13189da95265@gmail.com> In-Reply-To: <20251117-st7571-split-v2-0-13189da95265@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 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4371; i=marcus.folkesson@gmail.com; h=from:subject:message-id; bh=M2AEWs1PlE4kHIlUXzPT49FDEzkCCXRLe8Ws9kBRYLc=; b=owEBbQKS/ZANAwAKAYiATm9ZXVIyAcsmYgBpGuUN7S0eSUy0WeRQVSetr6IPo5Cq1Hkfsuut/ +1sV0FwKLKJAjMEAAEKAB0WIQQFUaLotmy1TWTBLGWIgE5vWV1SMgUCaRrlDQAKCRCIgE5vWV1S Mv3aD/9TeQ5VkNPagHzqU66aEpO8JzLUXxjTFXFZhPrtClpp79RSb928M1WjKKH+daFwrjwZHhv 0JL1KAjFSTH8XbSBCZl3N08xxfZU4Yu+Y598VIVpft1WsJc9bgVFMYtmHNoclMILi0qpAuYbFGq hNdDGXyIDgLLsoHbaeph22oObecqUF73rrPg2GSRQnXqZwZCpEpzeEQiimf9mZZqoIe0Gsftv0Z G7X05V2rq6Nxk4YPzy0tzY762ozblSMooq+uEpc8uOkBd6rPBfuaKT6nzihECYNVKDLAvdtO4jn 3bi2atEJ6FPRT9l66OTo2zS/nEwQtifL7cx+4KO78XglF0OotyoqPRjIILlHRslvrncy2ozZUQL mPXJnGRNuXhvs6DZWhQuz2oOt9K4gwSWczlt4tKEnnRboHC3KjXH31PFYHazWiC52TTszwIxKW4 7P/X7beFDWrxnb1Mce0pLT9ly5d6vw/U//ZXXtBYbpW6rvDTaoa0A+4Dh4M6cRJNmYl28VXULp2 ksKhpCFCUozYemsTkvK1ahoeiggeGsN9fm6Bv5vgn8UtRAZlzjAVhgI13odA2I9f03sR+rLBkoL vFNaQbT3g+1EVEtGrDH7GH3E+3VpJMuoXZQSH0xavT9Tl+Mr8FgZftOutVQEi8k3dYu+Uid/2Jw s1qJ8ydBX3N223w== 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 66e9ffb757c8..c89e521cafa1 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 diff --git a/drivers/gpu/drm/sitronix/Kconfig b/drivers/gpu/drm/sitronix/Kconfig index 0676a86661ca..2204250ab413 100644 --- a/drivers/gpu/drm/sitronix/Kconfig +++ b/drivers/gpu/drm/sitronix/Kconfig @@ -27,6 +27,18 @@ config DRM_ST7571_I2C if M is selected the module will be called st7571-i2c. +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/Makefile index 8073bb776ff9..c631e3359c3d 100644 --- a/drivers/gpu/drm/sitronix/Makefile +++ b/drivers/gpu/drm/sitronix/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_DRM_ST7571) += st7571.o obj-$(CONFIG_DRM_ST7571_I2C) += st7571-i2c.o +obj-$(CONFIG_DRM_ST7571_SPI) += st7571-spi.o obj-$(CONFIG_DRM_ST7586) += st7586.o obj-$(CONFIG_DRM_ST7735R) += st7735r.o diff --git a/drivers/gpu/drm/sitronix/st7571-spi.c b/drivers/gpu/drm/sitronix/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 = { + .reg_bits = 8, + .val_bits = 8, + .can_multi_write = true, +}; + +static int st7571_spi_probe(struct spi_device *spi) +{ + struct st7571_device *st7571; + struct regmap *regmap; + + regmap = 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 = 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 = spi_get_drvdata(spi); + + st7571_remove(st7571); +} + +static const struct of_device_id st7571_of_match[] = { + { .compatible = "sitronix,st7567", .data = &st7567_config }, + { .compatible = "sitronix,st7571", .data = &st7571_config }, + {}, +}; +MODULE_DEVICE_TABLE(of, st7571_of_match); + +static const struct spi_device_id st7571_spi_id[] = { + { "st7567", 0 }, + { "st7571", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, st7571_spi_id); + +static struct spi_driver st7571_spi_driver = { + .driver = { + .name = "st7571-spi", + .of_match_table = st7571_of_match, + }, + .probe = st7571_spi_probe, + .remove = st7571_spi_remove, + .id_table = 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"); -- 2.51.2