drivers/spi/spi.c

   1 /*
   2  * Copyright (c) 2011 The Chromium OS Authors.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of
   7  * the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but without any warranty; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  17  * MA 02111-1307 USA
  18  */
  19
  20 #include <common.h>
  21 #include <malloc.h>
  22 #include <spi.h>
  23
  24 void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
  25                          unsigned int cs)
  26 {
  27         struct spi_slave *slave;
  28         void *ptr;
  29
  30         ptr = malloc(size);
  31         if (ptr) {
  32                 memset(ptr, '\0', size);
  33                 slave = (struct spi_slave *)(ptr + offset);
  34                 slave->bus = bus;
  35                 slave->cs = cs;
  36         }
  37
  38         return ptr;
  39 }