1 /* 2 * (C) Copyright 2010 3 * Jason Kridner <jkridner@beagleboard.org> 4 * 5 * Based on cmd_led.c patch from: 6 * http://www.mail-archive.com/u-boot@lists.denx.de/msg06873.html 7 * (C) Copyright 2008 8 * Ulf Samuelsson <ulf.samuelsson@atmel.com> 9 * 10 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <common.h> 14 #include <config.h> 15 #include <command.h> 16 #include <status_led.h> 17 18 struct led_tbl_s { 19 char *string; /* String for use in the command */ 20 led_id_t mask; /* Mask used for calling __led_set() */ 21 void (*off)(void); /* Optional function for turning LED off */ 22 void (*on)(void); /* Optional function for turning LED on */ 23 void (*toggle)(void);/* Optional function for toggling LED */ 24 }; 25 26 typedef struct led_tbl_s led_tbl_t; 27 28 static const led_tbl_t led_commands[] = { 29 #ifdef CONFIG_LED_STATUS_BOARD_SPECIFIC 30 #ifdef CONFIG_LED_STATUS0 31 { "0", CONFIG_LED_STATUS_BIT, NULL, NULL, NULL }, 32 #endif 33 #ifdef CONFIG_LED_STATUS1 34 { "1", CONFIG_LED_STATUS_BIT1, NULL, NULL, NULL }, 35 #endif 36 #ifdef CONFIG_LED_STATUS2 37 { "2", CONFIG_LED_STATUS_BIT2, NULL, NULL, NULL }, 38 #endif 39 #ifdef CONFIG_LED_STATUS3 40 { "3", CONFIG_LED_STATUS_BIT3, NULL, NULL, NULL }, 41 #endif 42 #ifdef CONFIG_LED_STATUS4 43 { "4", CONFIG_LED_STATUS_BIT4, NULL, NULL, NULL }, 44 #endif 45 #ifdef CONFIG_LED_STATUS5 46 { "5", CONFIG_LED_STATUS_BIT5, NULL, NULL, NULL }, 47 #endif 48 #endif 49 #ifdef CONFIG_LED_STATUS_GREEN 50 { "green", CONFIG_LED_STATUS_GREEN, green_led_off, green_led_on, NULL }, 51 #endif 52 #ifdef CONFIG_LED_STATUS_YELLOW 53 { "yellow", CONFIG_LED_STATUS_YELLOW, yellow_led_off, yellow_led_on, 54 NULL }, 55 #endif 56 #ifdef CONFIG_LED_STATUS_RED 57 { "red", CONFIG_LED_STATUS_RED, red_led_off, red_led_on, NULL }, 58 #endif 59 #ifdef CONFIG_LED_STATUS_BLUE 60 { "blue", CONFIG_LED_STATUS_BLUE, blue_led_off, blue_led_on, NULL }, 61 #endif 62 { NULL, 0, NULL, NULL, NULL } 63 }; 64 65 enum led_cmd { LED_ON, LED_OFF, LED_TOGGLE, LED_BLINK }; 66 67 enum led_cmd get_led_cmd(char *var) 68 { 69 if (strcmp(var, "off") == 0) 70 return LED_OFF; 71 if (strcmp(var, "on") == 0) 72 return LED_ON; 73 if (strcmp(var, "toggle") == 0) 74 return LED_TOGGLE; 75 if (strcmp(var, "blink") == 0) 76 return LED_BLINK; 77 78 return -1; 79 } 80 81 /* 82 * LED drivers providing a blinking LED functionality, like the 83 * PCA9551, can override this empty weak function 84 */ 85 void __weak __led_blink(led_id_t mask, int freq) 86 { 87 } 88 89 int do_legacy_led(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 90 { 91 int i, match = 0; 92 enum led_cmd cmd; 93 int freq; 94 95 /* Validate arguments */ 96 if ((argc < 3) || (argc > 4)) 97 return CMD_RET_USAGE; 98 99 cmd = get_led_cmd(argv[2]); 100 if (cmd < 0) { 101 return CMD_RET_USAGE; 102 } 103 104 for (i = 0; led_commands[i].string; i++) { 105 if ((strcmp("all", argv[1]) == 0) || 106 (strcmp(led_commands[i].string, argv[1]) == 0)) { 107 match = 1; 108 switch (cmd) { 109 case LED_ON: 110 if (led_commands[i].on) 111 led_commands[i].on(); 112 else 113 __led_set(led_commands[i].mask, 114 CONFIG_LED_STATUS_ON); 115 break; 116 case LED_OFF: 117 if (led_commands[i].off) 118 led_commands[i].off(); 119 else 120 __led_set(led_commands[i].mask, 121 CONFIG_LED_STATUS_OFF); 122 break; 123 case LED_TOGGLE: 124 if (led_commands[i].toggle) 125 led_commands[i].toggle(); 126 else 127 __led_toggle(led_commands[i].mask); 128 break; 129 case LED_BLINK: 130 if (argc != 4) 131 return CMD_RET_USAGE; 132 133 freq = simple_strtoul(argv[3], NULL, 10); 134 __led_blink(led_commands[i].mask, freq); 135 } 136 /* Need to set only 1 led if led_name wasn't 'all' */ 137 if (strcmp("all", argv[1]) != 0) 138 break; 139 } 140 } 141 142 /* If we ran out of matches, print Usage */ 143 if (!match) { 144 return CMD_RET_USAGE; 145 } 146 147 return 0; 148 } 149 150 U_BOOT_CMD( 151 led, 4, 1, do_legacy_led, 152 "[" 153 #ifdef CONFIG_LED_STATUS_BOARD_SPECIFIC 154 #ifdef CONFIG_LED_STATUS0 155 "0|" 156 #endif 157 #ifdef CONFIG_LED_STATUS1 158 "1|" 159 #endif 160 #ifdef CONFIG_LED_STATUS2 161 "2|" 162 #endif 163 #ifdef CONFIG_LED_STATUS3 164 "3|" 165 #endif 166 #ifdef CONFIG_LED_STATUS4 167 "4|" 168 #endif 169 #ifdef CONFIG_LED_STATUS5 170 "5|" 171 #endif 172 #endif 173 #ifdef CONFIG_LED_STATUS_GREEN 174 "green|" 175 #endif 176 #ifdef CONFIG_LED_STATUS_YELLOW 177 "yellow|" 178 #endif 179 #ifdef CONFIG_LED_STATUS_RED 180 "red|" 181 #endif 182 #ifdef CONFIG_LED_STATUS_BLUE 183 "blue|" 184 #endif 185 "all] [on|off|toggle|blink] [blink-freq in ms]", 186 "[led_name] [on|off|toggle|blink] sets or clears led(s)" 187 ); 188