[J-u-boot.git] / drivers / misc / status_led.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 */

#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[] = {
	{	CONFIG_LED_STATUS_BIT,
		CONFIG_LED_STATUS_STATE,
		LED_STATUS_PERIOD,
		0,
	},
#if defined(CONFIG_LED_STATUS1)
	{	CONFIG_LED_STATUS_BIT1,
		CONFIG_LED_STATUS_STATE1,
		LED_STATUS_PERIOD1,
		0,
	},
#endif
#if defined(CONFIG_LED_STATUS2)
	{	CONFIG_LED_STATUS_BIT2,
		CONFIG_LED_STATUS_STATE2,
		LED_STATUS_PERIOD2,
		0,
	},
#endif
#if defined(CONFIG_LED_STATUS3)
	{	CONFIG_LED_STATUS_BIT3,
		CONFIG_LED_STATUS_STATE3,
		LED_STATUS_PERIOD3,
		0,
	},
#endif
#if defined(CONFIG_LED_STATUS4)
	{	CONFIG_LED_STATUS_BIT4,
		CONFIG_LED_STATUS_STATE4,
		LED_STATUS_PERIOD4,
		0,
	},
#endif
#if defined(CONFIG_LED_STATUS5)
	{	CONFIG_LED_STATUS_BIT5,
		CONFIG_LED_STATUS_STATE5,
		LED_STATUS_PERIOD5,
		0,
	},
#endif
};

#define MAX_LED_DEV	(sizeof(led_dev)/sizeof(led_dev_t))

static int status_led_init_done = 0;

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 != CONFIG_LED_STATUS_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 == CONFIG_LED_STATUS_BLINKING) {
		ld->cnt = 0;		/* always start with full period    */
		state = CONFIG_LED_STATUS_ON;	/* always start with LED _ON_ */
	}
	__led_set (ld->mask, state);
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
6a30c4ca	2	/*
48b42616	3	* (C) Copyright 2000-2003
6a30c4ca	4	* Wolfgang Denk, DENX Software Engineering, [email protected].
6a30c4ca WD	5	*/
	6
	7	#include <common.h>
6a30c4ca WD	8	#include <status_led.h>
	9
	10	/*
	11	* The purpose of this code is to signal the operational status of a
	12	* target which usually boots over the network; while running in
48b42616	13	* U-Boot, a status LED is blinking. As soon as a valid BOOTP reply
6a30c4ca WD	14	* message has been received, the LED is turned off. The Linux
	15	* kernel, once it is running, will start blinking the LED again,
	16	* with another frequency.
	17	*/
	18
	19	/* ------------------------------------------------------------------------- */
	20
6a30c4ca	21	typedef struct {
48b42616 WD	22	led_id_t mask;
	23	int state;
	24	int period;
	25	int cnt;
6a30c4ca WD	26	} led_dev_t;
	27
	28	led_dev_t led_dev[] = {
2d8d190c UM	29	{ CONFIG_LED_STATUS_BIT,
	30	CONFIG_LED_STATUS_STATE,
	31	LED_STATUS_PERIOD,
	32	0,
	33	},
	34	#if defined(CONFIG_LED_STATUS1)
	35	{ CONFIG_LED_STATUS_BIT1,
	36	CONFIG_LED_STATUS_STATE1,
	37	LED_STATUS_PERIOD1,
	38	0,
	39	},
6a30c4ca	40	#endif
2d8d190c UM	41	#if defined(CONFIG_LED_STATUS2)
	42	{ CONFIG_LED_STATUS_BIT2,
	43	CONFIG_LED_STATUS_STATE2,
	44	LED_STATUS_PERIOD2,
	45	0,
	46	},
6a30c4ca	47	#endif
2d8d190c UM	48	#if defined(CONFIG_LED_STATUS3)
	49	{ CONFIG_LED_STATUS_BIT3,
	50	CONFIG_LED_STATUS_STATE3,
	51	LED_STATUS_PERIOD3,
	52	0,
	53	},
6a30c4ca	54	#endif
2d8d190c UM	55	#if defined(CONFIG_LED_STATUS4)
	56	{ CONFIG_LED_STATUS_BIT4,
	57	CONFIG_LED_STATUS_STATE4,
	58	LED_STATUS_PERIOD4,
	59	0,
	60	},
a8eeaf2f	61	#endif
2d8d190c UM	62	#if defined(CONFIG_LED_STATUS5)
	63	{ CONFIG_LED_STATUS_BIT5,
	64	CONFIG_LED_STATUS_STATE5,
	65	LED_STATUS_PERIOD5,
	66	0,
	67	},
a8eeaf2f	68	#endif
6a30c4ca WD	69	};
	70
	71	#define MAX_LED_DEV (sizeof(led_dev)/sizeof(led_dev_t))
	72
	73	static int status_led_init_done = 0;
	74
13cfbe51	75	void status_led_init(void)
6a30c4ca	76	{
48b42616 WD	77	led_dev_t *ld;
48b42616 WD	78	int i;
6a30c4ca	79
48b42616 WD	80	for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++)
	81	__led_init (ld->mask, ld->state);
	82	status_led_init_done = 1;
6a30c4ca WD	83	}
6a30c4ca WD	84
c076e5c9	85	void status_led_tick(ulong timestamp)
6a30c4ca	86	{
48b42616 WD	87	led_dev_t *ld;
	88	int i;
	89
	90	if (!status_led_init_done)
c076e5c9	91	status_led_init();
6a30c4ca	92
48b42616	93	for (i = 0, ld = led_dev; i < MAX_LED_DEV; i++, ld++) {
6a30c4ca	94
2d8d190c	95	if (ld->state != CONFIG_LED_STATUS_BLINKING)
48b42616	96	continue;
6a30c4ca	97
48b42616 WD	98	if (++ld->cnt >= ld->period) {
	99	__led_toggle (ld->mask);
	100	ld->cnt -= ld->period;
	101	}
6a30c4ca	102
6a30c4ca	103	}
6a30c4ca WD	104	}
6a30c4ca WD	105
c076e5c9	106	void status_led_set(int led, int state)
6a30c4ca	107	{
48b42616 WD	108	led_dev_t *ld;
	109
	110	if (led < 0 \|\| led >= MAX_LED_DEV)
	111	return;
	112
	113	if (!status_led_init_done)
c076e5c9	114	status_led_init();
48b42616 WD	115
	116	ld = &led_dev[led];
	117
	118	ld->state = state;
2d8d190c	119	if (state == CONFIG_LED_STATUS_BLINKING) {
48b42616	120	ld->cnt = 0; /* always start with full period */
2d8d190c	121	state = CONFIG_LED_STATUS_ON; /* always start with LED _ON_ */
48b42616 WD	122	}
48b42616 WD	123	__led_set (ld->mask, state);
6a30c4ca	124	}