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/* Get the LCD panel power status (0: full on, 1..3: controller
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power on, flat panel power off, 4: full off), see FB_BLANK_XXX */
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int (*get_power)(struct lcd_device *);
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/* Enable or disable power to the LCD (0: on; 4: off, see FB_BLANK_XXX) */
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int (*set_power)(struct lcd_device *, int power);
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/* Get the current contrast setting (0-max_contrast) */