3499495205
2.6.12-rc1-pa6 use work queue in LED/LCD driver instead of tasklet. Main advantage is it allows use of msleep() in the led_LCD_driver to "atomically" perform two MMIO writes (CMD, then DATA). Lead to nice cleanup of the main led_work_func() and led_LCD_driver(). Kudos to David for being persistent. From: David Pye <dmp@davidmpye.dyndns.org> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#ifndef LED_H
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#define LED_H
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#define LED7 0x80 /* top (or furthest right) LED */
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#define LED6 0x40
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#define LED5 0x20
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#define LED4 0x10
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#define LED3 0x08
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#define LED2 0x04
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#define LED1 0x02
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#define LED0 0x01 /* bottom (or furthest left) LED */
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#define LED_LAN_TX LED0 /* for LAN transmit activity */
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#define LED_LAN_RCV LED1 /* for LAN receive activity */
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#define LED_DISK_IO LED2 /* for disk activity */
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#define LED_HEARTBEAT LED3 /* heartbeat */
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/* values for pdc_chassis_lcd_info_ret_block.model: */
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#define DISPLAY_MODEL_LCD 0 /* KittyHawk LED or LCD */
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#define DISPLAY_MODEL_NONE 1 /* no LED or LCD */
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#define DISPLAY_MODEL_LASI 2 /* LASI style 8 bit LED */
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#define DISPLAY_MODEL_OLD_ASP 0x7F /* faked: ASP style 8 x 1 bit LED (only very old ASP versions) */
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#define LED_CMD_REG_NONE 0 /* NULL == no addr for the cmd register */
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/* register_led_driver() */
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int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg);
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/* registers the LED regions for procfs */
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void __init register_led_regions(void);
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#ifdef CONFIG_CHASSIS_LCD_LED
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/* writes a string to the LCD display (if possible on this h/w) */
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int lcd_print(char *str);
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#else
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#define lcd_print(str)
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#endif
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/* main LED initialization function (uses PDC) */
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int __init led_init(void);
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#endif /* LED_H */
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