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common/cmd_led.c
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/* * (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> * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ #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() */ |
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void (*off)(void); /* Optional function for turning LED off */ void (*on)(void); /* Optional function for turning LED on */ |
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void (*toggle)(void);/* Optional function for toggling LED */ |
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}; typedef struct led_tbl_s led_tbl_t; static const led_tbl_t led_commands[] = { #ifdef CONFIG_BOARD_SPECIFIC_LED #ifdef STATUS_LED_BIT |
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{ "0", STATUS_LED_BIT, NULL, NULL, NULL }, |
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#endif #ifdef STATUS_LED_BIT1 |
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{ "1", STATUS_LED_BIT1, NULL, NULL, NULL }, |
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#endif #ifdef STATUS_LED_BIT2 |
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{ "2", STATUS_LED_BIT2, NULL, NULL, NULL }, |
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#endif #ifdef STATUS_LED_BIT3 |
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{ "3", STATUS_LED_BIT3, NULL, NULL, NULL }, |
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#endif #endif #ifdef STATUS_LED_GREEN |
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{ "green", STATUS_LED_GREEN, green_led_off, green_led_on, NULL }, |
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#endif #ifdef STATUS_LED_YELLOW |
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{ "yellow", STATUS_LED_YELLOW, yellow_led_off, yellow_led_on, NULL }, |
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#endif #ifdef STATUS_LED_RED |
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{ "red", STATUS_LED_RED, red_led_off, red_led_on, NULL }, |
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#endif #ifdef STATUS_LED_BLUE |
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{ "blue", STATUS_LED_BLUE, blue_led_off, blue_led_on, NULL }, |
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#endif |
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{ NULL, 0, NULL, NULL, NULL } |
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}; |
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enum led_cmd { LED_ON, LED_OFF, LED_TOGGLE }; enum led_cmd get_led_cmd(char *var) |
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{ if (strcmp(var, "off") == 0) { |
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return LED_OFF; |
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} if (strcmp(var, "on") == 0) { |
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return LED_ON; |
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} |
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if (strcmp(var, "toggle") == 0) return LED_TOGGLE; |
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return -1; } int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { |
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int i, match = 0; enum led_cmd cmd; |
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/* Validate arguments */ if ((argc != 3)) { |
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return CMD_RET_USAGE; |
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} |
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cmd = get_led_cmd(argv[2]); if (cmd < 0) { |
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return CMD_RET_USAGE; |
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} for (i = 0; led_commands[i].string; i++) { |
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if ((strcmp("all", argv[1]) == 0) || |
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(strcmp(led_commands[i].string, argv[1]) == 0)) { |
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match = 1; switch (cmd) { case LED_ON: if (led_commands[i].on) |
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led_commands[i].on(); |
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else |
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__led_set(led_commands[i].mask, STATUS_LED_ON); |
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break; case LED_OFF: if (led_commands[i].off) |
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led_commands[i].off(); |
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else |
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__led_set(led_commands[i].mask, STATUS_LED_OFF); |
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break; case LED_TOGGLE: if (led_commands[i].toggle) led_commands[i].toggle(); else __led_toggle(led_commands[i].mask); |
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} |
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/* Need to set only 1 led if led_name wasn't 'all' */ if (strcmp("all", argv[1]) != 0) break; |
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} } /* If we ran out of matches, print Usage */ |
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if (!match) { |
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return CMD_RET_USAGE; |
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} return 0; } U_BOOT_CMD( led, 3, 1, do_led, |
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"[" |
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#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 |
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"all] [on|off|toggle]", "[led_name] [on|off|toggle] sets or clears led(s)" |
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); |