led.h
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#ifndef LED_H
#define LED_H
#define LED7 0x80 /* top (or furthest right) LED */
#define LED6 0x40
#define LED5 0x20
#define LED4 0x10
#define LED3 0x08
#define LED2 0x04
#define LED1 0x02
#define LED0 0x01 /* bottom (or furthest left) LED */
#define LED_LAN_TX LED0 /* for LAN transmit activity */
#define LED_LAN_RCV LED1 /* for LAN receive activity */
#define LED_DISK_IO LED2 /* for disk activity */
#define LED_HEARTBEAT LED3 /* heartbeat */
/* values for pdc_chassis_lcd_info_ret_block.model: */
#define DISPLAY_MODEL_LCD 0 /* KittyHawk LED or LCD */
#define DISPLAY_MODEL_NONE 1 /* no LED or LCD */
#define DISPLAY_MODEL_LASI 2 /* LASI style 8 bit LED */
#define DISPLAY_MODEL_OLD_ASP 0x7F /* faked: ASP style 8 x 1 bit LED (only very old ASP versions) */
#define LED_CMD_REG_NONE 0 /* NULL == no addr for the cmd register */
/* register_led_driver() */
int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg);
/* registers the LED regions for procfs */
void __init register_led_regions(void);
#ifdef CONFIG_CHASSIS_LCD_LED
/* writes a string to the LCD display (if possible on this h/w) */
int lcd_print(const char *str);
#else
#define lcd_print(str)
#endif
/* main LED initialization function (uses PDC) */
int __init led_init(void);
#endif /* LED_H */