mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 08:21:36 +01:00
a8eeaf2f7a
This patch extends the U-Boot "led" command to support automatic blinking by setting a blink frequency in milliseconds. Additionally the number of supported LEDs is increased to 6 (0...5). This will be used by the PCA9551 LED driver. Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Tom Rini <trini@konsulko.com>
126 lines
2.3 KiB
C
126 lines
2.3 KiB
C
/*
|
|
* (C) Copyright 2000-2003
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <status_led.h>
|
|
|
|
/*
|
|
* The purpose of this code is to signal the operational status of a
|
|
* target which usually boots over the network; while running in
|
|
* U-Boot, a status LED is blinking. As soon as a valid BOOTP reply
|
|
* message has been received, the LED is turned off. The Linux
|
|
* kernel, once it is running, will start blinking the LED again,
|
|
* with another frequency.
|
|
*/
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
typedef struct {
|
|
led_id_t mask;
|
|
int state;
|
|
int period;
|
|
int cnt;
|
|
} led_dev_t;
|
|
|
|
led_dev_t led_dev[] = {
|
|
{ STATUS_LED_BIT,
|
|
STATUS_LED_STATE,
|
|
STATUS_LED_PERIOD,
|
|
0,
|
|
},
|
|
#if defined(STATUS_LED_BIT1)
|
|
{ STATUS_LED_BIT1,
|
|
STATUS_LED_STATE1,
|
|
STATUS_LED_PERIOD1,
|
|
0,
|
|
},
|
|
#endif
|
|
#if defined(STATUS_LED_BIT2)
|
|
{ STATUS_LED_BIT2,
|
|
STATUS_LED_STATE2,
|
|
STATUS_LED_PERIOD2,
|
|
0,
|
|
},
|
|
#endif
|
|
#if defined(STATUS_LED_BIT3)
|
|
{ STATUS_LED_BIT3,
|
|
STATUS_LED_STATE3,
|
|
STATUS_LED_PERIOD3,
|
|
0,
|
|
},
|
|
#endif
|
|
#if defined(STATUS_LED_BIT4)
|
|
{ STATUS_LED_BIT4,
|
|
STATUS_LED_STATE4,
|
|
STATUS_LED_PERIOD4,
|
|
0,
|
|
},
|
|
#endif
|
|
#if defined(STATUS_LED_BIT5)
|
|
{ STATUS_LED_BIT5,
|
|
STATUS_LED_STATE5,
|
|
STATUS_LED_PERIOD5,
|
|
0,
|
|
},
|
|
#endif
|
|
};
|
|
|
|
#define MAX_LED_DEV (sizeof(led_dev)/sizeof(led_dev_t))
|
|
|
|
static int status_led_init_done = 0;
|
|
|
|
static void status_led_init (void)
|
|
{
|
|
led_dev_t *ld;
|
|
int i;
|
|
|
|
for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++)
|
|
__led_init (ld->mask, ld->state);
|
|
status_led_init_done = 1;
|
|
}
|
|
|
|
void status_led_tick (ulong timestamp)
|
|
{
|
|
led_dev_t *ld;
|
|
int i;
|
|
|
|
if (!status_led_init_done)
|
|
status_led_init ();
|
|
|
|
for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++) {
|
|
|
|
if (ld->state != STATUS_LED_BLINKING)
|
|
continue;
|
|
|
|
if (++ld->cnt >= ld->period) {
|
|
__led_toggle (ld->mask);
|
|
ld->cnt -= ld->period;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
void status_led_set (int led, int state)
|
|
{
|
|
led_dev_t *ld;
|
|
|
|
if (led < 0 || led >= MAX_LED_DEV)
|
|
return;
|
|
|
|
if (!status_led_init_done)
|
|
status_led_init ();
|
|
|
|
ld = &led_dev[led];
|
|
|
|
ld->state = state;
|
|
if (state == STATUS_LED_BLINKING) {
|
|
ld->cnt = 0; /* always start with full period */
|
|
state = STATUS_LED_ON; /* always start with LED _ON_ */
|
|
}
|
|
__led_set (ld->mask, state);
|
|
}
|