drivers/gpu/drm/exynos/exynos_ddc.c

   1 /*
   2  * Copyright (C) 2011 Samsung Electronics Co.Ltd
   3  * Authors:
   4  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   5  *      Inki Dae <inki.dae@samsung.com>
   6  *
   7  * This program is free software; you can redistribute  it and/or modify it
   8  * under  the terms of  the GNU General  Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  *
  12  */
  13
  14 #include <drm/drmP.h>
  15
  16 #include <linux/kernel.h>
  17 #include <linux/i2c.h>
  18 #include <linux/module.h>
  19
  20
  21 #include "exynos_drm_drv.h"
  22 #include "exynos_hdmi.h"
  23
  24 static int s5p_ddc_probe(struct i2c_client *client,
  25                         const struct i2c_device_id *dev_id)
  26 {
  27         hdmi_attach_ddc_client(client);
  28
  29         dev_info(&client->adapter->dev,
  30                 "attached %s into i2c adapter successfully\n",
  31                 client->name);
  32
  33         return 0;
  34 }
  35
  36 static int s5p_ddc_remove(struct i2c_client *client)
  37 {
  38         dev_info(&client->adapter->dev,
  39                 "detached %s from i2c adapter successfully\n",
  40                 client->name);
  41
  42         return 0;
  43 }
  44
  45 static struct i2c_device_id ddc_idtable[] = {
  46         {"s5p_ddc", 0},
  47         {"exynos5-hdmiddc", 0},
  48         { },
  49 };
  50
  51 #ifdef CONFIG_OF
  52 static struct of_device_id hdmiddc_match_types[] = {
  53         {
  54                 .compatible = "samsung,exynos5-hdmiddc",
  55         }, {
  56                 .compatible = "samsung,exynos4210-hdmiddc",
  57         }, {
  58                 /* end node */
  59         }
  60 };
  61 #endif
  62
  63 struct i2c_driver ddc_driver = {
  64         .driver = {
  65                 .name = "exynos-hdmiddc",
  66                 .owner = THIS_MODULE,
  67                 .of_match_table = of_match_ptr(hdmiddc_match_types),
  68         },
  69         .id_table       = ddc_idtable,
  70         .probe          = s5p_ddc_probe,
  71         .remove         = s5p_ddc_remove,
  72         .command                = NULL,
  73 };