1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * DRM driver for Solomon SSD13xx OLED displays (I2C bus)
  4 *
  5 * Copyright 2022 Red Hat Inc.
  6 * Author: Javier Martinez Canillas <javierm@redhat.com>
  7 *
  8 * Based on drivers/video/fbdev/ssd1307fb.c
  9 * Copyright 2012 Free Electrons
 10 */
 11#include <linux/i2c.h>
 12#include <linux/module.h>
 13
 14#include "ssd130x.h"
 15
 16#define DRIVER_NAME	"ssd130x-i2c"
 17#define DRIVER_DESC	"DRM driver for Solomon SSD13xx OLED displays (I2C)"
 18
 19static const struct regmap_config ssd130x_i2c_regmap_config = {
 20	.reg_bits = 8,
 21	.val_bits = 8,
 22};
 23
 24static int ssd130x_i2c_probe(struct i2c_client *client)
 25{
 26	struct ssd130x_device *ssd130x;
 27	struct regmap *regmap;
 28
 29	regmap = devm_regmap_init_i2c(client, &ssd130x_i2c_regmap_config);
 30	if (IS_ERR(regmap))
 31		return PTR_ERR(regmap);
 32
 33	ssd130x = ssd130x_probe(&client->dev, regmap);
 34	if (IS_ERR(ssd130x))
 35		return PTR_ERR(ssd130x);
 36
 37	i2c_set_clientdata(client, ssd130x);
 38
 39	return 0;
 40}
 41
 42static void ssd130x_i2c_remove(struct i2c_client *client)
 43{
 44	struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
 45
 46	ssd130x_remove(ssd130x);
 47}
 48
 49static void ssd130x_i2c_shutdown(struct i2c_client *client)
 50{
 51	struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
 52
 53	ssd130x_shutdown(ssd130x);
 54}
 55
 56static const struct of_device_id ssd130x_of_match[] = {
 57	/* ssd130x family */
 58	{
 59		.compatible = "sinowealth,sh1106",
 60		.data = &ssd130x_variants[SH1106_ID],
 61	},
 62	{
 63		.compatible = "solomon,ssd1305",
 64		.data = &ssd130x_variants[SSD1305_ID],
 65	},
 66	{
 67		.compatible = "solomon,ssd1306",
 68		.data = &ssd130x_variants[SSD1306_ID],
 69	},
 70	{
 71		.compatible = "solomon,ssd1307",
 72		.data = &ssd130x_variants[SSD1307_ID],
 73	},
 74	{
 75		.compatible = "solomon,ssd1309",
 76		.data = &ssd130x_variants[SSD1309_ID],
 77	},
 78	/* Deprecated but kept for backward compatibility */
 79	{
 80		.compatible = "solomon,ssd1305fb-i2c",
 81		.data = &ssd130x_variants[SSD1305_ID],
 82	},
 83	{
 84		.compatible = "solomon,ssd1306fb-i2c",
 85		.data = &ssd130x_variants[SSD1306_ID],
 86	},
 87	{
 88		.compatible = "solomon,ssd1307fb-i2c",
 89		.data = &ssd130x_variants[SSD1307_ID],
 90	},
 91	{
 92		.compatible = "solomon,ssd1309fb-i2c",
 93		.data = &ssd130x_variants[SSD1309_ID],
 94	},
 95	/* ssd132x family */
 96	{
 97		.compatible = "solomon,ssd1322",
 98		.data = &ssd130x_variants[SSD1322_ID],
 99	},
100	{
101		.compatible = "solomon,ssd1325",
102		.data = &ssd130x_variants[SSD1325_ID],
103	},
104	{
105		.compatible = "solomon,ssd1327",
106		.data = &ssd130x_variants[SSD1327_ID],
107	},
108	{ /* sentinel */ }
109};
110MODULE_DEVICE_TABLE(of, ssd130x_of_match);
111
112static struct i2c_driver ssd130x_i2c_driver = {
113	.driver = {
114		.name = DRIVER_NAME,
115		.of_match_table = ssd130x_of_match,
116	},
117	.probe = ssd130x_i2c_probe,
118	.remove = ssd130x_i2c_remove,
119	.shutdown = ssd130x_i2c_shutdown,
120};
121module_i2c_driver(ssd130x_i2c_driver);
122
123MODULE_DESCRIPTION(DRIVER_DESC);
124MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");
125MODULE_LICENSE("GPL v2");
126MODULE_IMPORT_NS(DRM_SSD130X);