drivers/gpu/drm/solomon/ssd130x-i2c.c

   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
  19 static const struct regmap_config ssd130x_i2c_regmap_config = {
  20         .reg_bits = 8,
  21         .val_bits = 8,
  22 };
  23
  24 static 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
  42 static 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
  49 static 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
  56 static 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 };
 110 MODULE_DEVICE_TABLE(of, ssd130x_of_match);
 111
 112 static 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 };
 121 module_i2c_driver(ssd130x_i2c_driver);
 122
 123 MODULE_DESCRIPTION(DRIVER_DESC);
 124 MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");
 125 MODULE_LICENSE("GPL v2");
 126 MODULE_IMPORT_NS("DRM_SSD130X");