LXR uboot/board/calao/sbc35

   1/*
   2 * Copyright (C) 2009
   3 * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com>
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <asm/arch/hardware.h>
  26#include <asm/arch/at91_spi.h>
  27#include <asm/arch/gpio.h>
  28#include <spi.h>
  29
  30#define SBC_A9260_CS0_PIN       AT91_PIN_PA3
  31#define SBC_A9260_CS1_PIN       AT91_PIN_PC11
  32
  33int spi_cs_is_valid(unsigned int bus, unsigned int cs)
  34{
  35        return bus == 0 && (cs == 1 || cs == 0);
  36}
  37
  38void spi_cs_activate(struct spi_slave *slave)
  39{
  40        if(slave->cs == 0)
  41                at91_set_gpio_value(SBC_A9260_CS0_PIN, 0);
  42        else if(slave->cs == 1)
  43                at91_set_gpio_value(SBC_A9260_CS1_PIN, 0);
  44}
  45
  46void spi_cs_deactivate(struct spi_slave *slave)
  47{
  48        if(slave->cs == 0)
  49                at91_set_gpio_value(SBC_A9260_CS0_PIN, 1);
  50        else if(slave->cs == 1)
  51                at91_set_gpio_value(SBC_A9260_CS1_PIN, 1);
  52}
  53
  54void spi_init_f(void)
  55{
  56        /* everything done in board_init */
  57}
  58