xref: /OK3568_Linux_fs/u-boot/board/atmel/at91rm9200ek/led.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * (C) Copyright 2006
3*4882a593Smuzhiyun  * Atmel Nordic AB <www.atmel.com>
4*4882a593Smuzhiyun  * Ulf Samuelsson <ulf@atmel.com>
5*4882a593Smuzhiyun  *
6*4882a593Smuzhiyun  * (C) Copyright 2010
7*4882a593Smuzhiyun  * Andreas Bießmann <andreas@biessmann.org>
8*4882a593Smuzhiyun  *
9*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
10*4882a593Smuzhiyun  */
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun #include <common.h>
13*4882a593Smuzhiyun #include <asm/io.h>
14*4882a593Smuzhiyun #include <asm/arch/hardware.h>
15*4882a593Smuzhiyun #include <asm/arch/clk.h>
16*4882a593Smuzhiyun #include <asm/arch/at91_pio.h>
17*4882a593Smuzhiyun #include <status_led.h>
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun /* bit mask in PIO port B */
20*4882a593Smuzhiyun #define	GREEN_LED	(1<<0)
21*4882a593Smuzhiyun #define	YELLOW_LED	(1<<1)
22*4882a593Smuzhiyun #define	RED_LED		(1<<2)
23*4882a593Smuzhiyun 
green_led_on(void)24*4882a593Smuzhiyun void	green_led_on(void)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
27*4882a593Smuzhiyun 	writel(GREEN_LED, &pio->piob.codr);
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun 
yellow_led_on(void)30*4882a593Smuzhiyun void	 yellow_led_on(void)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
33*4882a593Smuzhiyun 	writel(YELLOW_LED, &pio->piob.codr);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun 
red_led_on(void)36*4882a593Smuzhiyun void	 red_led_on(void)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
39*4882a593Smuzhiyun 	writel(RED_LED, &pio->piob.codr);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun 
green_led_off(void)42*4882a593Smuzhiyun void	green_led_off(void)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
45*4882a593Smuzhiyun 	writel(GREEN_LED, &pio->piob.sodr);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun 
yellow_led_off(void)48*4882a593Smuzhiyun void	yellow_led_off(void)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
51*4882a593Smuzhiyun 	writel(YELLOW_LED, &pio->piob.sodr);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun 
red_led_off(void)54*4882a593Smuzhiyun void	red_led_off(void)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
57*4882a593Smuzhiyun 	writel(RED_LED, &pio->piob.sodr);
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun 
coloured_LED_init(void)60*4882a593Smuzhiyun void coloured_LED_init (void)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun 	at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
63*4882a593Smuzhiyun 
64*4882a593Smuzhiyun 	at91_periph_clk_enable(ATMEL_ID_PIOB);
65*4882a593Smuzhiyun 
66*4882a593Smuzhiyun 	/* Disable peripherals on LEDs */
67*4882a593Smuzhiyun 	writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.per);
68*4882a593Smuzhiyun 	/* Enable pins as outputs */
69*4882a593Smuzhiyun 	writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.oer);
70*4882a593Smuzhiyun 	/* Turn all LEDs OFF */
71*4882a593Smuzhiyun 	writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.sodr);
72*4882a593Smuzhiyun }
73