Unverified Commit 052039e3 authored by Marcus Folkesson's avatar Marcus Folkesson Committed by Javier Martinez Canillas
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drm/sitronix/st7571-spi: add support for SPI interface 



Add support for ST7561/ST7571 connected to SPI bus.

Reviewed-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Signed-off-by: default avatarMarcus Folkesson <marcus.folkesson@gmail.com>
Link: https://patch.msgid.link/20251215-st7571-split-v3-6-d5f3205c3138@gmail.com


Signed-off-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
parent b362de16

MAINTAINERS

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@@ -8201,6 +8201,7 @@ 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
































drivers/gpu/drm/sitronix/Kconfig



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@@ -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
































drivers/gpu/drm/sitronix/Makefile



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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
























drivers/gpu/drm/sitronix/st7571-spi.c
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// SPDX-License-Identifier: GPL-2.0-or-later









/*









 * Driver for Sitronix ST7571 connected via SPI bus.









 *









 * Copyright (C) 2025 Marcus Folkesson <marcus.folkesson@gmail.com>









 */



















#include <linux/spi/spi.h>









#include <linux/module.h>









#include <linux/regmap.h>



















#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 <marcus.folkesson@gmail.com>");









MODULE_DESCRIPTION("DRM Driver for Sitronix ST7571 LCD controller (SPI)");









MODULE_LICENSE("GPL");









MODULE_IMPORT_NS("DRM_ST7571");