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authorSascha Hauer <s.hauer@pengutronix.de>2010-12-18 14:40:24 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2010-12-20 09:57:36 +0100
commitc840feead1db0fb9bbface0efff66ce8a8d24791 (patch)
tree18cd47af4c9b3ba99042c0cd86893f2453d5085c /commands/trigger.c
parent5323cbbbfdea6c7b86dc8260b87c768ba5db89a6 (diff)
downloadbarebox-c840feead1db0fb9bbface0efff66ce8a8d24791.tar.gz
LED: Add trigger command
This patch allows controlling LED triggers vie the command line. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/trigger.c')
-rw-r--r--commands/trigger.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/commands/trigger.c b/commands/trigger.c
new file mode 100644
index 0000000..162da97
--- /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 <common.h>
+#include <led.h>
+#include <command.h>
+#include <getopt.h>
+#include <errno.h>
+
+#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 <trigger> <led>", "set a trigger for a led\n")
+BAREBOX_CMD_HELP_OPT ("-d <trigger>", "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
+