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Diffstat (limited to 'board/bf537-stamp/cmd_bf537led.c')
| -rw-r--r-- | board/bf537-stamp/cmd_bf537led.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/board/bf537-stamp/cmd_bf537led.c b/board/bf537-stamp/cmd_bf537led.c deleted file mode 100644 index 7d8f3ea..0000000 --- a/board/bf537-stamp/cmd_bf537led.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * U-boot - cmd_bf537led.c - * - * Copyright (C) 2006 Aaron Gage, Ocean Optics Inc. - * - * 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 <asm/blackfin.h> -#include <asm/string.h> -#ifdef CONFIG_BF537_STAMP_LEDCMD - -/* Define the command usage in a reusable way */ -#define USAGE_LONG \ - "led <number> <action>\n" \ - " <number> - Index (0-5) of LED to change, or \"all\"\n" \ - " <action> - Must be one of:\n" \ - " on off toggle" - -/* Number of LEDs supported by the board */ -#define NUMBER_LEDS 6 -/* The BF537 stamp has 6 LEDs. This mask indicates that all should be lit. */ -#define LED_ALL_MASK 0x003F - -void show_cmd_usage(void); -void set_led_state(int index, int state); -void configure_GPIO_to_output(int index); - -/* Map of LEDs according to their GPIO ports. This can be rearranged or - * otherwise changed to account for different GPIO configurations. - */ -int led_ports[] = { PF6, PF7, PF8, PF9, PF10, PF11 }; - -#define ACTION_TOGGLE -1 -#define ACTION_OFF 0 -#define ACTION_ON 1 - -#define LED_STATE_OFF 0 -#define LED_STATE_ON 1 - -/* This is a trivial atoi implementation since we don't have one available */ -int atoi(char *string) -{ - int length; - int retval = 0; - int i; - int sign = 1; - - length = strlen(string); - for (i = 0; i < length; i++) { - if (0 == i && string[0] == '-') { - sign = -1; - continue; - } - if (string[i] > '9' || string[i] < '0') { - break; - } - retval *= 10; - retval += string[i] - '0'; - } - retval *= sign; - return retval; -} - -int do_bf537led(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - int led_mask = 0; - int led_current_state = 0; - int action = ACTION_OFF; - int temp; - - if (3 != argc) { - /* Not enough arguments, so just show usage information */ - show_cmd_usage(); - return 1; - } - - if (strcmp(argv[1], "all") == 0) { - led_mask = LED_ALL_MASK; - } else { - temp = atoi(argv[1]); - if (temp < 0 || temp >= NUMBER_LEDS) { - printf("Invalid LED number [%s]\n", argv[1]); - show_cmd_usage(); - return 2; - } - led_mask |= (1 << temp); - } - - if (strcmp(argv[2], "off") == 0) { - action = ACTION_OFF; - } else if (strcmp(argv[2], "on") == 0) { - action = ACTION_ON; - } else if (strcmp(argv[2], "toggle") == 0) { - action = ACTION_TOGGLE; - } else { - printf("Invalid action [%s]\n", argv[2]); - show_cmd_usage(); - return 3; - } - - for (temp = 0; temp < NUMBER_LEDS; temp++) { - if ((led_mask & (1 << temp)) > 0) { - /* - * It is possible that the user has wired one of PF6-PF11 to - * something other than an LED, so this will only change a pin - * to output if the user has indicated a state change. This may - * happen a lot, but this way is safer than just setting all pins - * to output. - */ - configure_GPIO_to_output(temp); - - led_current_state = - ((*pPORTFIO & led_ports[temp]) > - 0) ? LED_STATE_ON : LED_STATE_OFF; - /* - printf("LED state for index %d (%x) is %d\n", temp, led_ports[temp], - led_current_state); - printf("*pPORTFIO is %x\n", *pPORTFIO); - */ - if (ACTION_ON == action - || (ACTION_TOGGLE == action - && 0 == led_current_state)) { - printf("Turning LED %d on\n", temp); - set_led_state(temp, LED_STATE_ON); - } else { - printf("Turning LED %d off\n", temp); - set_led_state(temp, LED_STATE_OFF); - } - } - } - - return 0; -} - -/* - * The GPIO pins that go to the LEDs on the BF537 stamp must be configured - * as output. This function simply configures them that way. This could - * be done to all of the GPIO lines at once, but if a user is using a - * custom board, this will try to be nice and only change the GPIO lines - * that the user specifically names. - */ -void configure_GPIO_to_output(int index) -{ - int port; - - port = led_ports[index]; - - /* Clear the Port F Function Enable Register */ - *pPORTF_FER &= ~port; - /* Set the Port F I/O direction register */ - *pPORTFIO_DIR |= port; - /* Clear the Port F I/O Input Enable Register */ - *pPORTFIO_INEN &= ~port; -} - -/* Enforce the given state on the GPIO line for the indicated LED */ -void set_led_state(int index, int state) -{ - int port; - - port = led_ports[index]; - - if (LED_STATE_OFF == state) { - /* Clear the bit to turn off the LED */ - *pPORTFIO &= ~port; - } else { - /* Set the bit to turn on the LED */ - *pPORTFIO |= port; - } -} - -/* Display usage information */ -void show_cmd_usage() -{ - printf("Usage:\n%s\n", USAGE_LONG); -} - -/* Register information for u-boot to find this command */ -U_BOOT_CMD(led, 3, 1, do_bf537led, - "Control BF537 stamp LEDs", USAGE_LONG); - -#endif |