Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/sitronix/st7571-spi: add support for SPI interface
Add support for ST7561/ST7571 connected to SPI bus.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://patch.msgid.link/20251215-st7571-split-v3-6-d5f3205c3138@gmail.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
authored by
Marcus Folkesson
and committed by
Javier Martinez Canillas
052039e3
b362de16
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MAINTAINERS
+1
MAINTAINERS
···
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F: Documentation/devicetree/bindings/display/sitronix,st7567.yaml
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F: Documentation/devicetree/bindings/display/sitronix,st7571.yaml
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F: drivers/gpu/drm/sitronix/st7571-i2c.c
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F: drivers/gpu/drm/sitronix/st7571-spi.c
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F: drivers/gpu/drm/sitronix/st7571.c
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F: drivers/gpu/drm/sitronix/st7571.h
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drivers/gpu/drm/sitronix/Kconfig
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drivers/gpu/drm/sitronix/Kconfig
···
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if M is selected the module will be called st7571-i2c.
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config DRM_ST7571_SPI
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tristate "DRM support for Sitronix ST7567/ST7571 display panels (SPI)"
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depends on DRM_ST7571 && SPI
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select REGMAP_SPI
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help
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Sitronix ST7571 is a driver and controller for 4-level gray
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scale and monochrome dot matrix LCD panels.
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DRM driver for Sitronix ST7565/ST7571 panels connected via SPI bus.
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if M is selected the module will be called st7571-spi.
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config DRM_ST7586
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tristate "DRM support for Sitronix ST7586 display panels"
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depends on DRM && SPI
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drivers/gpu/drm/sitronix/Makefile
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drivers/gpu/drm/sitronix/Makefile
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drivers/gpu/drm/sitronix/st7571-spi.c
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drivers/gpu/drm/sitronix/st7571-spi.c
···
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for Sitronix ST7571 connected via SPI bus.
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*
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* Copyright (C) 2025 Marcus Folkesson <marcus.folkesson@gmail.com>
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*/
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#include <linux/spi/spi.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include "st7571.h"
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static const struct regmap_config st7571_spi_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.can_multi_write = true,
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};
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static int st7571_spi_probe(struct spi_device *spi)
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{
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struct st7571_device *st7571;
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struct regmap *regmap;
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regmap = devm_regmap_init_spi(spi, &st7571_spi_regmap_config);
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if (IS_ERR(regmap)) {
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return dev_err_probe(&spi->dev, PTR_ERR(regmap),
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"Failed to initialize regmap\n");
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}
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st7571 = st7571_probe(&spi->dev, regmap);
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if (IS_ERR(st7571))
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return dev_err_probe(&spi->dev, PTR_ERR(st7571),
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"Failed to initialize regmap\n");
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spi_set_drvdata(spi, st7571);
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return 0;
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}
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static void st7571_spi_remove(struct spi_device *spi)
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{
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struct st7571_device *st7571 = spi_get_drvdata(spi);
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st7571_remove(st7571);
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}
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static const struct of_device_id st7571_of_match[] = {
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{ .compatible = "sitronix,st7567", .data = &st7567_config },
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{ .compatible = "sitronix,st7571", .data = &st7571_config },
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{},
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};
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MODULE_DEVICE_TABLE(of, st7571_of_match);
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static const struct spi_device_id st7571_spi_id[] = {
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{ "st7567", 0 },
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{ "st7571", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(spi, st7571_spi_id);
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static struct spi_driver st7571_spi_driver = {
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.driver = {
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.name = "st7571-spi",
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.of_match_table = st7571_of_match,
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},
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.probe = st7571_spi_probe,
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.remove = st7571_spi_remove,
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.id_table = st7571_spi_id,
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};
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module_spi_driver(st7571_spi_driver);
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MODULE_AUTHOR("Marcus Folkesson <marcus.folkesson@gmail.com>");
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MODULE_DESCRIPTION("DRM Driver for Sitronix ST7571 LCD controller (SPI)");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS("DRM_ST7571");