board/intercontrol/digsy_mtc/cmd_disp.c

   1 /*
   2  * (C) Copyright 2011 DENX Software Engineering,
   3  * Anatolij Gustschin <agust@denx.de>
   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 <command.h>
  26 #include <mpc5xxx.h>
  27 #include <asm/io.h>
  28
  29 #define GPIO_USB1_0     0x00010000
  30
  31 static int cmd_disp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  32 {
  33         struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
  34
  35         if (argc < 2) {
  36                 printf("%s\n",
  37                        in_be32(&gpio->simple_dvo) & GPIO_USB1_0 ? "on" : "off");
  38                 return 0;
  39         }
  40
  41         if (!strncmp(argv[1], "on", 2)) {
  42                 setbits_be32(&gpio->simple_dvo, GPIO_USB1_0);
  43         } else if (!strncmp(argv[1], "off", 3)) {
  44                 clrbits_be32(&gpio->simple_dvo, GPIO_USB1_0);
  45         } else {
  46                 cmd_usage(cmdtp);
  47                 return 1;
  48         }
  49         return 0;
  50 }
  51
  52 U_BOOT_CMD(disp, 2, 1, cmd_disp,
  53                 "disp [on/off] - switch display on/off",
  54                 "\n    - print display on/off status\n"
  55                 "on\n    - turn on\n"
  56                 "off\n    - turn off\n"
  57 );