board/samsung/common/multi_i2c.c

   1 /*
   2  *  Copyright (C) 2012 Samsung Electronics
   3  *  Lukasz Majewski <l.majewski@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <i2c.h>
  10
  11 #ifndef CONFIG_SOFT_I2C_I2C10_SCL
  12 #define CONFIG_SOFT_I2C_I2C10_SCL 0
  13 #endif
  14
  15 #ifndef CONFIG_SOFT_I2C_I2C10_SDA
  16 #define CONFIG_SOFT_I2C_I2C10_SDA 0
  17 #endif
  18
  19 /* Handle multiple I2C buses instances */
  20 int get_multi_scl_pin(void)
  21 {
  22         unsigned int bus = i2c_get_bus_num();
  23
  24         switch (bus) {
  25         case I2C_0:
  26                 return CONFIG_SOFT_I2C_I2C5_SCL;
  27         case I2C_1:
  28                 return CONFIG_SOFT_I2C_I2C9_SCL;
  29         case I2C_2:
  30                 return CONFIG_SOFT_I2C_I2C10_SCL;
  31         default:
  32                 printf("I2C_%d not supported!\n", bus);
  33         };
  34
  35         return 0;
  36 }
  37
  38 int get_multi_sda_pin(void)
  39 {
  40         unsigned int bus = i2c_get_bus_num();
  41
  42         switch (bus) {
  43         case I2C_0:
  44                 return CONFIG_SOFT_I2C_I2C5_SDA;
  45         case I2C_1:
  46                 return CONFIG_SOFT_I2C_I2C9_SDA;
  47         case I2C_2:
  48                 return CONFIG_SOFT_I2C_I2C10_SDA;
  49         default:
  50                 printf("I2C_%d not supported!\n", bus);
  51         };
  52
  53         return 0;
  54 }
  55
  56 int multi_i2c_init(void)
  57 {
  58         return 0;
  59 }