xref: /openbmc/u-boot/include/status_led.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * (C) Copyright 2000-2004
4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5  */
6 
7 /*
8  * The purpose of this code is to signal the operational status of a
9  * target which usually boots over the network; while running in
10  * PCBoot, a status LED is blinking. As soon as a valid BOOTP reply
11  * message has been received, the LED is turned off. The Linux
12  * kernel, once it is running, will start blinking the LED again,
13  * with another frequency.
14  */
15 
16 #ifndef _STATUS_LED_H_
17 #define	_STATUS_LED_H_
18 
19 #ifdef CONFIG_LED_STATUS
20 
21 #define LED_STATUS_PERIOD	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ)
22 #ifdef CONFIG_LED_STATUS1
23 #define LED_STATUS_PERIOD1	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ1)
24 #endif /* CONFIG_LED_STATUS1 */
25 #ifdef CONFIG_LED_STATUS2
26 #define LED_STATUS_PERIOD2	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ2)
27 #endif /* CONFIG_LED_STATUS2 */
28 #ifdef CONFIG_LED_STATUS3
29 #define LED_STATUS_PERIOD3	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ3)
30 #endif /* CONFIG_LED_STATUS3 */
31 #ifdef CONFIG_LED_STATUS4
32 #define LED_STATUS_PERIOD4	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ4)
33 #endif /* CONFIG_LED_STATUS4 */
34 #ifdef CONFIG_LED_STATUS5
35 #define LED_STATUS_PERIOD5	(CONFIG_SYS_HZ / CONFIG_LED_STATUS_FREQ5)
36 #endif /* CONFIG_LED_STATUS5 */
37 
38 void status_led_init(void);
39 void status_led_tick (unsigned long timestamp);
40 void status_led_set  (int led, int state);
41 
42 /*****  MVS v1  **********************************************************/
43 #if (defined(CONFIG_MVS) && CONFIG_MVS < 2)
44 # define STATUS_LED_PAR		im_ioport.iop_pdpar
45 # define STATUS_LED_DIR		im_ioport.iop_pddir
46 # undef  STATUS_LED_ODR
47 # define STATUS_LED_DAT		im_ioport.iop_pddat
48 
49 # define STATUS_LED_ACTIVE	1		/* LED on for bit == 1	*/
50 
51 /*****  Someone else defines these  *************************************/
52 #elif defined(STATUS_LED_PAR)
53   /*
54    * ADVICE: Define in your board configuration file rather than
55    * filling this file up with lots of custom board stuff.
56    */
57 
58 #elif defined(CONFIG_LED_STATUS_BOARD_SPECIFIC)
59 /* led_id_t is unsigned long mask */
60 typedef unsigned long led_id_t;
61 
62 extern void __led_toggle (led_id_t mask);
63 extern void __led_init (led_id_t mask, int state);
64 extern void __led_set (led_id_t mask, int state);
65 void __led_blink(led_id_t mask, int freq);
66 #else
67 # error Status LED configuration missing
68 #endif
69 /************************************************************************/
70 
71 #ifndef CONFIG_LED_STATUS_BOARD_SPECIFIC
72 # include <asm/status_led.h>
73 #endif
74 
75 #endif	/* CONFIG_LED_STATUS	*/
76 
77 /*
78  * Coloured LEDs API
79  */
80 #ifndef	__ASSEMBLY__
81 void coloured_LED_init(void);
82 void red_led_on(void);
83 void red_led_off(void);
84 void green_led_on(void);
85 void green_led_off(void);
86 void yellow_led_on(void);
87 void yellow_led_off(void);
88 void blue_led_on(void);
89 void blue_led_off(void);
90 #else
91 	.extern LED_init
92 	.extern red_led_on
93 	.extern red_led_off
94 	.extern yellow_led_on
95 	.extern yellow_led_off
96 	.extern green_led_on
97 	.extern green_led_off
98 	.extern blue_led_on
99 	.extern blue_led_off
100 #endif
101 
102 #endif	/* _STATUS_LED_H_	*/
103