From c840feead1db0fb9bbface0efff66ce8a8d24791 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Sat, 18 Dec 2010 14:40:24 +0100 Subject: LED: Add trigger command This patch allows controlling LED triggers vie the command line. Signed-off-by: Sascha Hauer --- commands/trigger.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 commands/trigger.c (limited to 'commands/trigger.c') diff --git a/commands/trigger.c b/commands/trigger.c new file mode 100644 index 0000000000..162da97c9b --- /dev/null +++ b/commands/trigger.c @@ -0,0 +1,107 @@ +/* + * LED trigger command support for barebox + * + * (C) Copyright 2010 Sascha Hauer, Pengutronix + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 +#include +#include +#include +#include + +#define LED_COMMAND_SET_TRIGGER 1 +#define LED_COMMAND_SHOW_INFO 2 +#define LED_COMMAND_DISABLE_TRIGGER 3 + +static char *trigger_names[] = { + [LED_TRIGGER_PANIC] = "panic", + [LED_TRIGGER_HEARTBEAT] = "heartbeat", + [LED_TRIGGER_NET_RX] = "net rx", + [LED_TRIGGER_NET_TX] = "net tx", + [LED_TRIGGER_NET_TXRX] = "net", +}; + +static int do_trigger(struct command *cmdtp, int argc, char *argv[]) +{ + struct led *led; + int i, opt, ret = 0; + int cmd = LED_COMMAND_SHOW_INFO; + unsigned long trigger = 0; + + while((opt = getopt(argc, argv, "t:d:")) > 0) { + switch(opt) { + case 't': + trigger = simple_strtoul(optarg, NULL, 0); + cmd = LED_COMMAND_SET_TRIGGER; + break; + case 'd': + trigger = simple_strtoul(optarg, NULL, 0); + cmd = LED_COMMAND_DISABLE_TRIGGER; + } + } + + switch (cmd) { + case LED_COMMAND_SHOW_INFO: + for (i = 0; i < LED_TRIGGER_MAX; i++) { + int led = led_get_trigger(i); + printf("%d: %s", i, trigger_names[i]); + if (led >= 0) + printf(" (led %d)", led); + printf("\n"); + } + break; + + case LED_COMMAND_DISABLE_TRIGGER: + led_set_trigger(trigger, NULL); + return 0; + case LED_COMMAND_SET_TRIGGER: + if (argc - optind != 1) + return COMMAND_ERROR_USAGE; + led = led_by_name_or_number(argv[optind]); + + if (!led) { + printf("no such led: %d\n", argv[optind]); + return 1; + } + + ret = led_set_trigger(trigger, led); + break; + } + + if (ret) + printf("trigger failed: %s\n", strerror(-ret)); + return ret ? 1 : 0; +} + +BAREBOX_CMD_HELP_START(trigger) +BAREBOX_CMD_HELP_USAGE("trigger [OPTIONS]\n") +BAREBOX_CMD_HELP_SHORT("control a LED trigger. Without options the currently assigned triggers are shown.\n") +BAREBOX_CMD_HELP_OPT ("-t ", "set a trigger for a led\n") +BAREBOX_CMD_HELP_OPT ("-d ", "disable a trigger\n") +BAREBOX_CMD_HELP_END + +BAREBOX_CMD_START(trigger) + .cmd = do_trigger, + .usage = "handle LED triggers", + BAREBOX_CMD_HELP(cmd_trigger_help) +BAREBOX_CMD_END + -- cgit v1.2.3