diff options
Diffstat (limited to 'cmd/led.c')
| -rw-r--r-- | cmd/led.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/cmd/led.c b/cmd/led.c new file mode 100644 index 0000000..b0f1a61 --- /dev/null +++ b/cmd/led.c @@ -0,0 +1,186 @@ +/* + * (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> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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 (*off)(void); /* Optional function for turning LED off */ + void (*on)(void); /* Optional function for turning LED on */ + void (*toggle)(void);/* Optional function for toggling LED */ +}; + +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, NULL }, +#endif +#ifdef STATUS_LED_BIT1 + { "1", STATUS_LED_BIT1, NULL, NULL, NULL }, +#endif +#ifdef STATUS_LED_BIT2 + { "2", STATUS_LED_BIT2, NULL, NULL, NULL }, +#endif +#ifdef STATUS_LED_BIT3 + { "3", STATUS_LED_BIT3, NULL, NULL, NULL }, +#endif +#ifdef STATUS_LED_BIT4 + { "4", STATUS_LED_BIT4, NULL, NULL, NULL }, +#endif +#ifdef STATUS_LED_BIT5 + { "5", STATUS_LED_BIT5, NULL, NULL, NULL }, +#endif +#endif +#ifdef STATUS_LED_GREEN + { "green", STATUS_LED_GREEN, green_led_off, green_led_on, NULL }, +#endif +#ifdef STATUS_LED_YELLOW + { "yellow", STATUS_LED_YELLOW, yellow_led_off, yellow_led_on, NULL }, +#endif +#ifdef STATUS_LED_RED + { "red", STATUS_LED_RED, red_led_off, red_led_on, NULL }, +#endif +#ifdef STATUS_LED_BLUE + { "blue", STATUS_LED_BLUE, blue_led_off, blue_led_on, NULL }, +#endif + { NULL, 0, NULL, NULL, NULL } +}; + +enum led_cmd { LED_ON, LED_OFF, LED_TOGGLE, LED_BLINK }; + +enum led_cmd get_led_cmd(char *var) +{ + if (strcmp(var, "off") == 0) + return LED_OFF; + if (strcmp(var, "on") == 0) + return LED_ON; + if (strcmp(var, "toggle") == 0) + return LED_TOGGLE; + if (strcmp(var, "blink") == 0) + return LED_BLINK; + + return -1; +} + +/* + * 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) +{ +} + +int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int i, match = 0; + enum led_cmd cmd; + int freq; + + /* Validate arguments */ + if ((argc < 3) || (argc > 4)) + return CMD_RET_USAGE; + + cmd = get_led_cmd(argv[2]); + if (cmd < 0) { + return CMD_RET_USAGE; + } + + for (i = 0; led_commands[i].string; i++) { + if ((strcmp("all", argv[1]) == 0) || + (strcmp(led_commands[i].string, argv[1]) == 0)) { + match = 1; + switch (cmd) { + case LED_ON: + if (led_commands[i].on) + led_commands[i].on(); + else + __led_set(led_commands[i].mask, + STATUS_LED_ON); + break; + case LED_OFF: + if (led_commands[i].off) + led_commands[i].off(); + else + __led_set(led_commands[i].mask, + STATUS_LED_OFF); + break; + case LED_TOGGLE: + if (led_commands[i].toggle) + led_commands[i].toggle(); + else + __led_toggle(led_commands[i].mask); + 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); + } + /* Need to set only 1 led if led_name wasn't 'all' */ + if (strcmp("all", argv[1]) != 0) + break; + } + } + + /* If we ran out of matches, print Usage */ + if (!match) { + return CMD_RET_USAGE; + } + + return 0; +} + +U_BOOT_CMD( + led, 4, 1, do_led, + "[" +#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 +#ifdef STATUS_LED_BIT4 + "4|" +#endif +#ifdef STATUS_LED_BIT5 + "5|" +#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|toggle|blink] [blink-freq in ms]", + "[led_name] [on|off|toggle|blink] sets or clears led(s)" +); |