PIN_CTRL_BL 44 drivers/auxdisplay/hd44780.c if (hd->pins[PIN_CTRL_BL]) PIN_CTRL_BL 45 drivers/auxdisplay/hd44780.c gpiod_set_value_cansleep(hd->pins[PIN_CTRL_BL], on); PIN_CTRL_BL 236 drivers/auxdisplay/hd44780.c hd->pins[PIN_CTRL_BL] = devm_gpiod_get_optional(dev, "backlight", PIN_CTRL_BL 238 drivers/auxdisplay/hd44780.c if (IS_ERR(hd->pins[PIN_CTRL_BL])) { PIN_CTRL_BL 239 drivers/auxdisplay/hd44780.c ret = PTR_ERR(hd->pins[PIN_CTRL_BL]);