Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

led: Remove state-saving of led for toggle functionality and add toggle option to led command

Browse Source 
* Read the led output state from GPIO instead saving state in memory when it is [re]set
* Added a toggle option to the led command

Previous discussion:
http://lists.denx.de/pipermail/u-boot/2011-May/093068.html

Changes since v1:
Fixed checkpatch errors

Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
master
Joel A Fernandes 13 years ago committed by Albert ARIBAUD
parent d604cda34a
commit b8bc8973a1
2 changed files with 52 additions and 40 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 28
      board/ti/beagle/led.c
  2. 64
      common/cmd_led.c

28
board/ti/beagle/led.c
Unescape View File

@ -24,8 +24,6 @@
#include <asm/arch/sys_proto.h>
#include <asm/arch/gpio.h>
static unsigned int saved_state[2] = {STATUS_LED_OFF, STATUS_LED_OFF};
/* GPIO pins for the LEDs */
#define BEAGLE_LED_USR0 150
#define BEAGLE_LED_USR1 149
@ -49,22 +47,22 @@ void __led_init (led_id_t mask, int state)
void __led_toggle (led_id_t mask)
{
int state, toggle_gpio = 0;
#ifdef STATUS_LED_BIT
if (STATUS_LED_BIT & mask) {
if (STATUS_LED_ON == saved_state[0])
__led_set(STATUS_LED_BIT, 0);
else
__led_set(STATUS_LED_BIT, 1);
}
if (!toggle_gpio && STATUS_LED_BIT & mask)
toggle_gpio = BEAGLE_LED_USR0;
#endif
#ifdef STATUS_LED_BIT1
if (STATUS_LED_BIT1 & mask) {
if (STATUS_LED_ON == saved_state[1])
__led_set(STATUS_LED_BIT1, 0);
else
__led_set(STATUS_LED_BIT1, 1);
}
if (!toggle_gpio && STATUS_LED_BIT1 & mask)
toggle_gpio = BEAGLE_LED_USR1;
#endif
if (toggle_gpio) {
if (!omap_request_gpio(toggle_gpio)) {
omap_set_gpio_direction(toggle_gpio, 0);
state = omap_get_gpio_dataout(toggle_gpio);
omap_set_gpio_dataout(toggle_gpio, !state);
}
}
}
void __led_set (led_id_t mask, int state)
@ -75,7 +73,6 @@ void __led_set (led_id_t mask, int state)
omap_set_gpio_direction(BEAGLE_LED_USR0, 0);
omap_set_gpio_dataout(BEAGLE_LED_USR0, state);
}
saved_state[0] = state;
}
#endif
#ifdef STATUS_LED_BIT1
@ -84,7 +81,6 @@ void __led_set (led_id_t mask, int state)
omap_set_gpio_direction(BEAGLE_LED_USR1, 0);
omap_set_gpio_dataout(BEAGLE_LED_USR1, state);
}
saved_state[1] = state;
}
#endif
}

64
common/cmd_led.c
Unescape View File

@ -36,6 +36,7 @@ struct led_tbl_s {
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;
@ -43,70 +44,85 @@ 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 },
{ "0", STATUS_LED_BIT, NULL, NULL, NULL },
#endif
#ifdef STATUS_LED_BIT1
{ "1", STATUS_LED_BIT1, NULL, NULL },
{ "1", STATUS_LED_BIT1, NULL, NULL, NULL },
#endif
#ifdef STATUS_LED_BIT2
{ "2", STATUS_LED_BIT2, NULL, NULL },
{ "2", STATUS_LED_BIT2, NULL, NULL, NULL },
#endif
#ifdef STATUS_LED_BIT3
{ "3", STATUS_LED_BIT3, NULL, NULL },
{ "3", STATUS_LED_BIT3, NULL, NULL, NULL },
#endif
#endif
#ifdef STATUS_LED_GREEN
{ "green", STATUS_LED_GREEN, green_LED_off, green_LED_on },
{ "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 },
{ "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 },
{ "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 },
{ "blue", STATUS_LED_BLUE, blue_LED_off, blue_LED_on, NULL },
#endif
{ NULL, 0, NULL, NULL }
{ NULL, 0, NULL, NULL, NULL }
};
int str_onoff (char *var)
enum led_cmd { LED_ON, LED_OFF, LED_TOGGLE };
enum led_cmd get_led_cmd(char *var)
{
if (strcmp(var, "off") == 0) {
return 0;
return LED_OFF;
}
if (strcmp(var, "on") == 0) {
return 1;
return LED_ON;
}
if (strcmp(var, "toggle") == 0)
return LED_TOGGLE;
return -1;
}
int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int state, i, match = 0;
int i, match = 0;
enum led_cmd cmd;
/* Validate arguments */
if ((argc != 3)) {
return cmd_usage(cmdtp);
}
state = str_onoff(argv[2]);
if (state < 0) {
cmd = get_led_cmd(argv[2]);
if (cmd < 0) {
return cmd_usage(cmdtp);
}
for (i = 0; led_commands[i].string; i++) {
if ((strcmp("all", argv[1]) == 0) ||
(strcmp(led_commands[i].string, argv[1]) == 0)) {
match = 1;
if (led_commands[i].on) {
if (state) {
match = 1;
switch (cmd) {
case LED_ON:
if (led_commands[i].on)
led_commands[i].on();
} else {
else
__led_set(led_commands[i].mask, 1);
break;
case LED_OFF:
if (led_commands[i].off)
led_commands[i].off();
}
} else {
__led_set(led_commands[i].mask, state);
else
__led_set(led_commands[i].mask, 0);
break;
case LED_TOGGLE:
if (led_commands[i].toggle)
led_commands[i].toggle();
else
__led_toggle(led_commands[i].mask);
}
/* Need to set only 1 led if led_name wasn't 'all' */
if (strcmp("all", argv[1]) != 0)
@ -151,6 +167,6 @@ U_BOOT_CMD(
#ifdef STATUS_LED_BLUE
"blue|"
#endif
"all] [on|off]\n",
"led [led_name] [on|off] sets or clears led(s)\n"
"all] [on|off|toggle]\n",
"led [led_name] [on|off|toggle] sets or clears led(s)\n"
);

Write Preview
Loading…
Cancel
Save