parisc: led: Rewrite LED/LCD driver to utilizize Linux LED subsystem
Rewrite the whole driver and drop the own code to calculate load average, disk and LAN load. Switch instead to use the in-kernel LED subsystem, which gives us quite some advantages, e.g. - existing triggers for heartbeat and disk/lan activity can be used - users can configre the LEDs at will to any existing trigger via /sys/class/leds - less overhead since we don't need to run own timers - fully integrated in Linux and as such cleaner code. Note that the driver now depends on CONFIG_LEDS_CLASS which has to be built-in and not as module. Signed-off-by: Helge Deller <deller@gmx.de>
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@ -25,16 +25,13 @@
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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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int register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg);
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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(const char *str);
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void lcd_print(const char *str);
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#else
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#define lcd_print(str)
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#define lcd_print(str) do { } while (0)
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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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@ -143,11 +143,6 @@ void __init setup_arch(char **cmdline_p)
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parisc_cache_init();
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paging_init();
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#ifdef CONFIG_CHASSIS_LCD_LED
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/* initialize the LCD/LED after boot_cpu_data is available ! */
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led_init(); /* LCD/LED initialization */
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#endif
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#ifdef CONFIG_PA11
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dma_ops_init();
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#endif
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@ -100,8 +100,9 @@ config SUPERIO
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config CHASSIS_LCD_LED
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bool "Chassis LCD and LED support"
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depends on LEDS_CLASS=y
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default y
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select VM_EVENT_COUNTERS
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select LEDS_TRIGGERS
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help
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Say Y here if you want to enable support for the Heartbeat,
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Disk/Network activities LEDs on some PA-RISC machines,
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