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cmd/legacy_led.c
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// SPDX-License-Identifier: GPL-2.0+ |
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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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*/ #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[] = { |
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#ifdef CONFIG_LED_STATUS_BOARD_SPECIFIC #ifdef CONFIG_LED_STATUS0 { "0", CONFIG_LED_STATUS_BIT, NULL, NULL, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS1 { "1", CONFIG_LED_STATUS_BIT1, NULL, NULL, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS2 { "2", CONFIG_LED_STATUS_BIT2, NULL, NULL, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS3 { "3", CONFIG_LED_STATUS_BIT3, NULL, NULL, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS4 { "4", CONFIG_LED_STATUS_BIT4, NULL, NULL, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS5 { "5", CONFIG_LED_STATUS_BIT5, NULL, NULL, NULL }, |
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#endif |
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#endif |
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#ifdef CONFIG_LED_STATUS_GREEN { "green", CONFIG_LED_STATUS_GREEN, green_led_off, green_led_on, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS_YELLOW { "yellow", CONFIG_LED_STATUS_YELLOW, yellow_led_off, yellow_led_on, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS_RED { "red", CONFIG_LED_STATUS_RED, red_led_off, red_led_on, NULL }, |
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#endif |
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#ifdef CONFIG_LED_STATUS_BLUE { "blue", CONFIG_LED_STATUS_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, LED_BLINK }; |
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enum led_cmd get_led_cmd(char *var) |
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{ |
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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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if (strcmp(var, "toggle") == 0) return LED_TOGGLE; |
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if (strcmp(var, "blink") == 0) return LED_BLINK; |
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return -1; } |
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/* * LED drivers providing a blinking LED functionality, like the * PCA9551, can override this empty weak function */ void __weak __led_blink(led_id_t mask, int freq) { } |
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int do_legacy_led(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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int i, match = 0; enum led_cmd cmd; |
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int freq; |
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/* Validate arguments */ |
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if ((argc < 3) || (argc > 4)) |
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return CMD_RET_USAGE; |
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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, |
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CONFIG_LED_STATUS_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, |
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CONFIG_LED_STATUS_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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break; case LED_BLINK: if (argc != 4) return CMD_RET_USAGE; freq = simple_strtoul(argv[3], NULL, 10); __led_blink(led_commands[i].mask, freq); |
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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( |
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led, 4, 1, do_legacy_led, |
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"[" |
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#ifdef CONFIG_LED_STATUS_BOARD_SPECIFIC #ifdef CONFIG_LED_STATUS0 |
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"0|" #endif |
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#ifdef CONFIG_LED_STATUS1 |
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"1|" #endif |
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#ifdef CONFIG_LED_STATUS2 |
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"2|" #endif |
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#ifdef CONFIG_LED_STATUS3 |
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"3|" #endif |
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#ifdef CONFIG_LED_STATUS4 |
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"4|" #endif |
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#ifdef CONFIG_LED_STATUS5 |
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"5|" #endif |
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#endif |
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#ifdef CONFIG_LED_STATUS_GREEN |
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"green|" #endif |
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#ifdef CONFIG_LED_STATUS_YELLOW |
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"yellow|" #endif |
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#ifdef CONFIG_LED_STATUS_RED |
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"red|" #endif |
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#ifdef CONFIG_LED_STATUS_BLUE |
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"blue|" #endif |
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"all] [on|off|toggle|blink] [blink-freq in ms]", "[led_name] [on|off|toggle|blink] sets or clears led(s)" |
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); |