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// SPDX-License-Identifier: GPL-2.0-only
/*
* DRM driver for Solomon SSD130x OLED displays (I2C bus)
*
* Copyright 2022 Red Hat Inc.
* Author: Javier Martinez Canillas <javierm@redhat.com>
*
* Based on drivers/video/fbdev/ssd1307fb.c
* Copyright 2012 Free Electrons
*/
#include <linux/i2c.h>
#include <linux/module.h>
#include "ssd130x.h"
#define DRIVER_NAME "ssd130x-i2c"
#define DRIVER_DESC "DRM driver for Solomon SSD130x OLED displays (I2C)"
static const struct regmap_config ssd130x_i2c_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static int ssd130x_i2c_probe(struct i2c_client *client)
{
struct ssd130x_device *ssd130x;
struct regmap *regmap;
regmap = devm_regmap_init_i2c(client, &ssd130x_i2c_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
ssd130x = ssd130x_probe(&client->dev, regmap);
if (IS_ERR(ssd130x))
return PTR_ERR(ssd130x);
i2c_set_clientdata(client, ssd130x);
return 0;
}
static int ssd130x_i2c_remove(struct i2c_client *client)
{
struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
return ssd130x_remove(ssd130x);
}
static void ssd130x_i2c_shutdown(struct i2c_client *client)
{
struct ssd130x_device *ssd130x = i2c_get_clientdata(client);
ssd130x_shutdown(ssd130x);
}
static struct ssd130x_deviceinfo ssd130x_sh1106_deviceinfo = {
.default_vcomh = 0x40,
.default_dclk_div = 1,
.default_dclk_frq = 5,
.page_mode_only = 1,
};
static struct ssd130x_deviceinfo ssd130x_ssd1305_deviceinfo = {
.default_vcomh = 0x34,
.default_dclk_div = 1,
.default_dclk_frq = 7,
};
static struct ssd130x_deviceinfo ssd130x_ssd1306_deviceinfo = {
.default_vcomh = 0x20,
.default_dclk_div = 1,
.default_dclk_frq = 8,
.need_chargepump = 1,
};
static struct ssd130x_deviceinfo ssd130x_ssd1307_deviceinfo = {
.default_vcomh = 0x20,
.default_dclk_div = 2,
.default_dclk_frq = 12,
.need_pwm = 1,
};
static struct ssd130x_deviceinfo ssd130x_ssd1309_deviceinfo = {
.default_vcomh = 0x34,
.default_dclk_div = 1,
.default_dclk_frq = 10,
};
static const struct of_device_id ssd130x_of_match[] = {
{
.compatible = "sinowealth,sh1106",
.data = &ssd130x_sh1106_deviceinfo,
},
{
.compatible = "solomon,ssd1305",
.data = &ssd130x_ssd1305_deviceinfo,
},
{
.compatible = "solomon,ssd1306",
.data = &ssd130x_ssd1306_deviceinfo,
},
{
.compatible = "solomon,ssd1307",
.data = &ssd130x_ssd1307_deviceinfo,
},
{
.compatible = "solomon,ssd1309",
.data = &ssd130x_ssd1309_deviceinfo,
},
/* Deprecated but kept for backward compatibility */
{
.compatible = "solomon,ssd1305fb-i2c",
.data = &ssd130x_ssd1305_deviceinfo,
},
{
.compatible = "solomon,ssd1306fb-i2c",
.data = &ssd130x_ssd1306_deviceinfo,
},
{
.compatible = "solomon,ssd1307fb-i2c",
.data = &ssd130x_ssd1307_deviceinfo,
},
{
.compatible = "solomon,ssd1309fb-i2c",
.data = &ssd130x_ssd1309_deviceinfo,
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ssd130x_of_match);
static struct i2c_driver ssd130x_i2c_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = ssd130x_of_match,
},
.probe_new = ssd130x_i2c_probe,
.remove = ssd130x_i2c_remove,
.shutdown = ssd130x_i2c_shutdown,
};
module_i2c_driver(ssd130x_i2c_driver);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");
MODULE_LICENSE("GPL v2");
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