DUAL_TFT_USAGE 44 drivers/staging/sm750fb/ddk750_display.h #define DUAL_TFT_ON (BIT(DUAL_TFT_OFFSET) | DUAL_TFT_USAGE) DUAL_TFT_USAGE 45 drivers/staging/sm750fb/ddk750_display.h #define DUAL_TFT_OFF ((0 << DUAL_TFT_OFFSET) | DUAL_TFT_USAGE)