arch/arm/mach-tegra/tegra210/funcmux.c

   1 /*
   2  * (C) Copyright 2013-2015
   3  * NVIDIA Corporation <www.nvidia.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /* Tegra210 high-level function multiplexing */
   9
  10 #include <common.h>
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/funcmux.h>
  13 #include <asm/arch/pinmux.h>
  14
  15 int funcmux_select(enum periph_id id, int config)
  16 {
  17         int bad_config = config != FUNCMUX_DEFAULT;
  18
  19         switch (id) {
  20         /*
  21          * Add other periph IDs here as needed.
  22          * Note that all pinmux/pads should have already
  23          * been set up in the board pinmux table in
  24          * pinmux-config-<board>.h for all periphs.
  25          * Leave this in for the odd case where a mux
  26          * needs to be changed on-the-fly.
  27          */
  28
  29         default:
  30                 debug("%s: invalid periph_id %d", __func__, id);
  31                 return -1;
  32         }
  33
  34         if (bad_config) {
  35                 debug("%s: invalid config %d for periph_id %d", __func__,
  36                       config, id);
  37                 return -1;
  38         }
  39         return 0;
  40 }