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author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-12-03 14:04:42 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-12-10 12:15:01 +0100 |
commit | 952036288872faab10511b8219c7b34788e63b64 (patch) | |
tree | a1d63e3121cb8e9bd2fe88035425400b9daa85ac /commands/gpio.c | |
parent | 8ad5fe6ca4a2f52fbe82d00a5046b098fe49d2af (diff) | |
download | barebox-952036288872faab10511b8219c7b34788e63b64.tar.gz barebox-952036288872faab10511b8219c7b34788e63b64.tar.xz |
command line gpio support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/gpio.c')
-rw-r--r-- | commands/gpio.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/commands/gpio.c b/commands/gpio.c new file mode 100644 index 0000000000..ec6b28813e --- /dev/null +++ b/commands/gpio.c @@ -0,0 +1,122 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <errno.h> +#include <gpio.h> + +static int do_gpio_get_value(cmd_tbl_t *cmdtp, int argc, char *argv[]) +{ + int gpio, value; + + if (argc < 2) + return COMMAND_ERROR_USAGE; + + gpio = simple_strtoul(argv[1], NULL, 0); + + value = gpio_get_value(gpio); + if (value < 0) + return 1; + + return value; +} + +static const __maybe_unused char cmd_gpio_get_value_help[] = +"Usage: gpio_set_value <gpio>\n"; + +U_BOOT_CMD_START(gpio_get_value) + .cmd = do_gpio_get_value, + .usage = "return a gpio's value", + U_BOOT_CMD_HELP(cmd_gpio_get_value_help) +U_BOOT_CMD_END + +static int do_gpio_set_value(cmd_tbl_t *cmdtp, int argc, char *argv[]) +{ + int gpio, value; + + if (argc < 3) + return COMMAND_ERROR_USAGE; + + gpio = simple_strtoul(argv[1], NULL, 0); + value = simple_strtoul(argv[2], NULL, 0); + + gpio_set_value(gpio, value); + + return 0; +} + +static const __maybe_unused char cmd_gpio_set_value_help[] = +"Usage: gpio_set_value <gpio> <value>\n"; + +U_BOOT_CMD_START(gpio_set_value) + .cmd = do_gpio_set_value, + .usage = "set a gpio's output value", + U_BOOT_CMD_HELP(cmd_gpio_set_value_help) +U_BOOT_CMD_END + +static int do_gpio_direction_input(cmd_tbl_t *cmdtp, int argc, char *argv[]) +{ + int gpio, ret; + + if (argc < 2) + return COMMAND_ERROR_USAGE; + + gpio = simple_strtoul(argv[1], NULL, 0); + + ret = gpio_direction_input(gpio); + if (ret) + return 1; + + return 0; +} + +static const __maybe_unused char cmd_do_gpio_direction_input_help[] = +"Usage: gpio_direction_input <gpio>\n"; + +U_BOOT_CMD_START(gpio_direction_input) + .cmd = do_gpio_direction_input, + .usage = "set a gpio as output", + U_BOOT_CMD_HELP(cmd_do_gpio_direction_input_help) +U_BOOT_CMD_END + +static int do_gpio_direction_output(cmd_tbl_t *cmdtp, int argc, char *argv[]) +{ + int gpio, value, ret; + + if (argc < 3) + return COMMAND_ERROR_USAGE; + + gpio = simple_strtoul(argv[1], NULL, 0); + value = simple_strtoul(argv[2], NULL, 0); + + ret = gpio_direction_output(gpio, value); + if (ret) + return 1; + + return 0; +} + +static const __maybe_unused char cmd_gpio_direction_output_help[] = +"Usage: gpio_direction_output <gpio> <value>\n"; + +U_BOOT_CMD_START(gpio_direction_output) + .cmd = do_gpio_direction_output, + .usage = "set a gpio as output", + U_BOOT_CMD_HELP(cmd_gpio_direction_output_help) +U_BOOT_CMD_END + |