u-boot/include/status_led.h
Bernhard Nortmann 13cfbe5135 allow LED initialization without STATUS_LED_BOOT
For current U-Boot to initialize status LEDs via status_led_init(), it
is required to have both CONFIG_STATUS_LED and STATUS_LED_BOOT defined.
This may be a particular concern with GPIO LEDs, where __led_init() is
required to correctly set up the GPIO (gpio_request and
gpio_direction_output). Without STATUS_LED_BOOT the initialization isn't
called, which could leave the user with a non-functional "led" command -
due to the fact that the LED routines in gpio_led.c use gpio_set_value()
just fine, but the GPIO never got set up properly in the first place.

I think having CONFIG_STATUS_LED is sufficient to justify a
corresponding call to status_led_init(), even with no STATUS_LED_BOOT
defined. To do so, common/board_r.c needs call that routine, so it now
is exposed via status_led.h.

Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
[trini: Add dummy __led_init to pca9551_led.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-10-24 13:50:02 -04:00

134 lines
3.7 KiB
C

/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* The purpose of this code is to signal the operational status of a
* target which usually boots over the network; while running in
* PCBoot, 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.
*/
#ifndef _STATUS_LED_H_
#define _STATUS_LED_H_
#ifdef CONFIG_STATUS_LED
#define STATUS_LED_OFF 0
#define STATUS_LED_BLINKING 1
#define STATUS_LED_ON 2
void status_led_init(void);
void status_led_tick (unsigned long timestamp);
void status_led_set (int led, int state);
/***** TQM8xxL ********************************************************/
#if defined(CONFIG_TQM8xxL)
# define STATUS_LED_PAR im_cpm.cp_pbpar
# define STATUS_LED_DIR im_cpm.cp_pbdir
# define STATUS_LED_ODR im_cpm.cp_pbodr
# define STATUS_LED_DAT im_cpm.cp_pbdat
# define STATUS_LED_BIT 0x00000001
# define STATUS_LED_PERIOD (CONFIG_SYS_HZ / 2)
# define STATUS_LED_STATE STATUS_LED_BLINKING
# define STATUS_LED_ACTIVE 1 /* LED on for bit == 1 */
# define STATUS_LED_BOOT 0 /* LED 0 used for boot status */
/***** MVS v1 **********************************************************/
#elif (defined(CONFIG_MVS) && CONFIG_MVS < 2)
# define STATUS_LED_PAR im_ioport.iop_pdpar
# define STATUS_LED_DIR im_ioport.iop_pddir
# undef STATUS_LED_ODR
# define STATUS_LED_DAT im_ioport.iop_pddat
# define STATUS_LED_BIT 0x00000001
# define STATUS_LED_PERIOD (CONFIG_SYS_HZ / 2)
# define STATUS_LED_STATE STATUS_LED_BLINKING
# define STATUS_LED_ACTIVE 1 /* LED on for bit == 1 */
# define STATUS_LED_BOOT 0 /* LED 0 used for boot status */
/***** Someone else defines these *************************************/
#elif defined(STATUS_LED_PAR)
/*
* ADVICE: Define in your board configuration file rather than
* filling this file up with lots of custom board stuff.
*/
#elif defined(CONFIG_V38B)
# define STATUS_LED_BIT 0x0010 /* Timer7 GPIO */
# define STATUS_LED_PERIOD (CONFIG_SYS_HZ / 2)
# define STATUS_LED_STATE STATUS_LED_BLINKING
# define STATUS_LED_ACTIVE 0 /* LED on for bit == 0 */
# define STATUS_LED_BOOT 0 /* LED 0 used for boot status */
#elif defined(CONFIG_MOTIONPRO)
#define STATUS_LED_BIT ((vu_long *) MPC5XXX_GPT6_ENABLE)
#define STATUS_LED_PERIOD (CONFIG_SYS_HZ / 10)
#define STATUS_LED_STATE STATUS_LED_BLINKING
#define STATUS_LED_BIT1 ((vu_long *) MPC5XXX_GPT7_ENABLE)
#define STATUS_LED_PERIOD1 (CONFIG_SYS_HZ / 10)
#define STATUS_LED_STATE1 STATUS_LED_OFF
#define STATUS_LED_BOOT 0 /* LED 0 used for boot status */
#elif defined(CONFIG_BOARD_SPECIFIC_LED)
/* led_id_t is unsigned long mask */
typedef unsigned long led_id_t;
extern void __led_toggle (led_id_t mask);
extern void __led_init (led_id_t mask, int state);
extern void __led_set (led_id_t mask, int state);
void __led_blink(led_id_t mask, int freq);
#else
# error Status LED configuration missing
#endif
/************************************************************************/
#ifndef CONFIG_BOARD_SPECIFIC_LED
# include <asm/status_led.h>
#endif
#endif /* CONFIG_STATUS_LED */
/*
* Coloured LEDs API
*/
#ifndef __ASSEMBLY__
void coloured_LED_init(void);
void red_led_on(void);
void red_led_off(void);
void green_led_on(void);
void green_led_off(void);
void yellow_led_on(void);
void yellow_led_off(void);
void blue_led_on(void);
void blue_led_off(void);
#else
.extern LED_init
.extern red_led_on
.extern red_led_off
.extern yellow_led_on
.extern yellow_led_off
.extern green_led_on
.extern green_led_off
.extern blue_led_on
.extern blue_led_off
#endif
#endif /* _STATUS_LED_H_ */