This patch allows any board implementing the coloured LED API to control the LEDs from the console. led [green | yellow | red | all ] [ on | off ] or led [ 1 | 2 | 3 | all ] [ on | off ] Adds configuration item CONFIG_CMD_LED enabling the command. Partially based on patch from Ulf Samuelsson: http://www.mail-archive.com/u-boot@lists.denx.de/msg09593.html. Updated based on feedback: http://www.mail-archive.com/u-boot@lists.denx.de/msg41847.html https://groups.google.com/d/topic/beagleboard/8Wf1HiK_QBo/discussion * Fixed a handful of style issues. * Significantly reduced the number of #ifdefs and redundant code * Converted redundant code into loops test against a structure * Made use of cmd_usage() * Introduced a str_onoff() function, but haven't yet put it in common * Eliminated trailing newline Signed-off-by: Jason Kridner <jkridner@beagleboard.org> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>master
parent
cd4b8a6329
commit
b633f66f02
@ -0,0 +1,153 @@ |
||||
/*
|
||||
* (C) Copyright 2010 |
||||
* Jason Kridner <jkridner@beagleboard.org> |
||||
* |
||||
* Based on cmd_led.c patch from: |
||||
* http://www.mail-archive.com/u-boot@lists.denx.de/msg06873.html
|
||||
* (C) Copyright 2008 |
||||
* Ulf Samuelsson <ulf.samuelsson@atmel.com> |
||||
* |
||||
* 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 <config.h> |
||||
#include <command.h> |
||||
#include <status_led.h> |
||||
|
||||
struct led_tbl_s { |
||||
char *string; /* String for use in the command */ |
||||
led_id_t mask; /* Mask used for calling __led_set() */ |
||||
void (*on)(void); /* Optional fucntion for turning LED on */ |
||||
void (*off)(void); /* Optional fucntion for turning LED on */ |
||||
}; |
||||
|
||||
typedef struct led_tbl_s led_tbl_t; |
||||
|
||||
static const led_tbl_t led_commands[] = { |
||||
#ifdef CONFIG_BOARD_SPECIFIC_LED |
||||
#ifdef STATUS_LED_BIT |
||||
{ "0", STATUS_LED_BIT, NULL, NULL }, |
||||
#endif |
||||
#ifdef STATUS_LED_BIT1 |
||||
{ "1", STATUS_LED_BIT1, NULL, NULL }, |
||||
#endif |
||||
#ifdef STATUS_LED_BIT2 |
||||
{ "2", STATUS_LED_BIT2, NULL, NULL }, |
||||
#endif |
||||
#ifdef STATUS_LED_BIT3 |
||||
{ "3", STATUS_LED_BIT3, NULL, NULL }, |
||||
#endif |
||||
#endif |
||||
#ifdef STATUS_LED_GREEN |
||||
{ "green", STATUS_LED_GREEN, green_LED_off, green_LED_on }, |
||||
#endif |
||||
#ifdef STATUS_LED_YELLOW |
||||
{ "yellow", STATUS_LED_YELLOW, yellow_LED_off, yellow_LED_on }, |
||||
#endif |
||||
#ifdef STATUS_LED_RED |
||||
{ "red", STATUS_LED_RED, red_LED_off, red_LED_on }, |
||||
#endif |
||||
#ifdef STATUS_LED_BLUE |
||||
{ "blue", STATUS_LED_BLUE, blue_LED_off, blue_LED_on }, |
||||
#endif |
||||
{ NULL, 0, NULL, NULL } |
||||
}; |
||||
|
||||
int str_onoff (char *var) |
||||
{ |
||||
if (strcmp(var, "off") == 0) { |
||||
return 0; |
||||
} |
||||
if (strcmp(var, "on") == 0) { |
||||
return 1; |
||||
} |
||||
return -1; |
||||
} |
||||
|
||||
int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
||||
{ |
||||
int state, i; |
||||
|
||||
/* Validate arguments */ |
||||
if ((argc != 3)) { |
||||
return cmd_usage(cmdtp); |
||||
} |
||||
|
||||
state = str_onoff(argv[2]); |
||||
if (state < 0) { |
||||
return cmd_usage(cmdtp); |
||||
} |
||||
|
||||
for (i = 0; led_commands[i].string; i++) { |
||||
if ((strcmp("all", argv[1]) == 0) ||
|
||||
(strcmp(led_commands[i].string, argv[1]) == 0)) { |
||||
if (led_commands[i].on) { |
||||
if (state) { |
||||
led_commands[i].on(); |
||||
} else { |
||||
led_commands[i].off(); |
||||
} |
||||
} else { |
||||
__led_set(led_commands[i].mask, state); |
||||
} |
||||
break; |
||||
} |
||||
} |
||||
|
||||
/* If we ran out of matches, print Usage */ |
||||
if (!led_commands[i].string && !(strcmp("all", argv[1]) == 0)) { |
||||
return cmd_usage(cmdtp); |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
U_BOOT_CMD( |
||||
led, 3, 1, do_led, |
||||
"led\t- [" |
||||
#ifdef CONFIG_BOARD_SPECIFIC_LED |
||||
#ifdef STATUS_LED_BIT |
||||
"0|" |
||||
#endif |
||||
#ifdef STATUS_LED_BIT1 |
||||
"1|" |
||||
#endif |
||||
#ifdef STATUS_LED_BIT2 |
||||
"2|" |
||||
#endif |
||||
#ifdef STATUS_LED_BIT3 |
||||
"3|" |
||||
#endif |
||||
#endif |
||||
#ifdef STATUS_LED_GREEN |
||||
"green|" |
||||
#endif |
||||
#ifdef STATUS_LED_YELLOW |
||||
"yellow|" |
||||
#endif |
||||
#ifdef STATUS_LED_RED |
||||
"red|" |
||||
#endif |
||||
#ifdef STATUS_LED_BLUE |
||||
"blue|" |
||||
#endif |
||||
"all] [on|off]\n", |
||||
"led [led_name] [on|off] sets or clears led(s)\n" |
||||
); |
Loading…
Reference in new issue