[people/ms/u-boot.git] / cpu / mpc5xx / status_led.c

/*
 * (C) Copyright 2000-2002	Wolfgang Denk, DENX Software Engineering, wd@denx.de
 * (C) Copyright 2003		Martin Winistoerfer, martinwinistoerfer@gmx.ch.
 *
 * 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
 */

/*
 * File:		status_led.c
 * 
 * Discription:		Blink a board led to show boot progress. Led's
 *			are connected via the MIOS module.
 */

#include <common.h>
#include <mpc5xx.h>
#include <status_led.h>

#ifdef CONFIG_STATUS_LED

typedef struct {
	ulong	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
};

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

static int status_led_init_done = 0;

static void status_led_init (void)
{
    volatile immap_t *immr = (immap_t *)CFG_IMMR;
    int i;

    for (i=0; i<MAX_LED_DEV; ++i) {
	led_dev_t *ld = &led_dev[i];
	
	immr->STATUS_LED_DIR = STATUS_LED_BIT;

#if (STATUS_LED_ACTIVE == 0)
	if (ld->state == STATUS_LED_ON)
		immr->STATUS_LED_DAT &= ~(ld->mask);
	else
		immr->STATUS_LED_DAT |=   ld->mask ;
#else
	if (ld->state == STATUS_LED_ON)
		immr->STATUS_LED_DAT |=   ld->mask ;
	else
		immr->STATUS_LED_DAT &= ~(ld->mask);
#endif
    }

    status_led_init_done  = 1;
}

void status_led_tick (ulong timestamp)
{
    volatile immap_t *immr = (immap_t *)CFG_IMMR;
    int i;

    if (!status_led_init_done)
	status_led_init();

    for (i=0; i<MAX_LED_DEV; ++i) {
	led_dev_t *ld = &led_dev[i];

	if (ld->state != STATUS_LED_BLINKING)
		continue;

	if (++(ld->cnt) >= ld->period) {
		immr->STATUS_LED_DAT ^= ld->mask;
		ld->cnt -= ld->period;
	}
    }
}

void status_led_set (int led, int state)
{
    volatile immap_t *immr = (immap_t *)CFG_IMMR;
    led_dev_t *ld;

    if (led < 0 || led >= MAX_LED_DEV)
	return;

    if (!status_led_init_done)
	status_led_init();

    ld = &led_dev[led];

    switch (state) {
    default:
	return;
    case STATUS_LED_BLINKING:
	ld->cnt = 0;		/* always start with full period	*/
	/* fall through */	/* always start with LED _ON_		*/
    case STATUS_LED_ON:
#if (STATUS_LED_ACTIVE == 0)
	immr->STATUS_LED_DAT &= ~(ld->mask);
#else
	immr->STATUS_LED_DAT |=   ld->mask ;
#endif
	break;
    case STATUS_LED_OFF:
#if (STATUS_LED_ACTIVE == 0)
	immr->STATUS_LED_DAT |=   ld->mask ;
#else
	immr->STATUS_LED_DAT &= ~(ld->mask);
#endif
	break;
    }
    ld->state = state;
}

#endif	/* CONFIG_STATUS_LED */
Commit	Line	Data
0db5bca8 WD	1	/*
	2	* (C) Copyright 2000-2002 Wolfgang Denk, DENX Software Engineering, wd@denx.de
	3	* (C) Copyright 2003 Martin Winistoerfer, martinwinistoerfer@gmx.ch.
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	/*
	25	* File: status_led.c
	26	*
	27	* Discription: Blink a board led to show boot progress. Led's
	28	* are connected via the MIOS module.
	29	*/
	30
	31	#include <common.h>
	32	#include <mpc5xx.h>
	33	#include <status_led.h>
	34
	35	#ifdef CONFIG_STATUS_LED
	36
	37	typedef struct {
	38	ulong mask;
	39	int state;
	40	int period;
	41	int cnt;
	42	} led_dev_t;
	43
	44	led_dev_t led_dev[] = {
	45	{ STATUS_LED_BIT,
	46	STATUS_LED_STATE,
	47	STATUS_LED_PERIOD,
	48	0,
	49	},
	50	#if defined(STATUS_LED_BIT1)
	51	{ STATUS_LED_BIT1,
	52	STATUS_LED_STATE1,
	53	STATUS_LED_PERIOD1,
	54	0,
	55	},
	56	#endif
	57	#if defined(STATUS_LED_BIT2)
	58	{ STATUS_LED_BIT2,
	59	STATUS_LED_STATE2,
	60	STATUS_LED_PERIOD2,
	61	0,
	62	},
	63	#endif
	64	#if defined(STATUS_LED_BIT3)
65	{ STATUS_LED_BIT3,
66	STATUS_LED_STATE3,
67	STATUS_LED_PERIOD3,
68	0,
69	},
70	#endif
71	};
72
73	#define MAX_LED_DEV (sizeof(led_dev)/sizeof(led_dev_t))
74
75	static int status_led_init_done = 0;
76
77	static void status_led_init (void)
78	{
79	volatile immap_t immr = (immap_t )CFG_IMMR;
80	int i;
81
82	for (i=0; i<MAX_LED_DEV; ++i) {
83	led_dev_t *ld = &led_dev[i];
84
85	immr->STATUS_LED_DIR = STATUS_LED_BIT;
86
87	#if (STATUS_LED_ACTIVE == 0)
88	if (ld->state == STATUS_LED_ON)
89	immr->STATUS_LED_DAT &= ~(ld->mask);
90	else
91	immr->STATUS_LED_DAT \|= ld->mask ;
92	#else
93	if (ld->state == STATUS_LED_ON)
94	immr->STATUS_LED_DAT \|= ld->mask ;
95	else
96	immr->STATUS_LED_DAT &= ~(ld->mask);
97	#endif
98	}
99
100	status_led_init_done = 1;
101	}
102
103	void status_led_tick (ulong timestamp)
104	{
105	volatile immap_t immr = (immap_t )CFG_IMMR;
106	int i;
107
108	if (!status_led_init_done)
109	status_led_init();
110
111	for (i=0; i<MAX_LED_DEV; ++i) {
112	led_dev_t *ld = &led_dev[i];
113
114	if (ld->state != STATUS_LED_BLINKING)
115	continue;
116
117	if (++(ld->cnt) >= ld->period) {
118	immr->STATUS_LED_DAT ^= ld->mask;
119	ld->cnt -= ld->period;
120	}
121	}
122	}
123
124	void status_led_set (int led, int state)
125	{
126	volatile immap_t immr = (immap_t )CFG_IMMR;
127	led_dev_t *ld;
128
129	if (led < 0 \|\| led >= MAX_LED_DEV)
130	return;
131
132	if (!status_led_init_done)
133	status_led_init();
134
135	ld = &led_dev[led];
136
137	switch (state) {
138	default:
139	return;
140	case STATUS_LED_BLINKING:
141	ld->cnt = 0; /* always start with full period */
142	/* fall through / / always start with LED _ON_ */
143	case STATUS_LED_ON:
144	#if (STATUS_LED_ACTIVE == 0)
145	immr->STATUS_LED_DAT &= ~(ld->mask);
146	#else
147	immr->STATUS_LED_DAT \|= ld->mask ;
148	#endif
149	break;
150	case STATUS_LED_OFF:
151	#if (STATUS_LED_ACTIVE == 0)
152	immr->STATUS_LED_DAT \|= ld->mask ;
153	#else
154	immr->STATUS_LED_DAT &= ~(ld->mask);
155	#endif
156	break;
157	}
158	ld->state = state;
159	}
160
161	#endif /* CONFIG_STATUS_LED */