TOSA_GPIO_BL_C20MA 45 drivers/video/backlight/tosa_bl.c gpio_set_value(TOSA_GPIO_BL_C20MA, brightness & 0x100); TOSA_GPIO_BL_C20MA 91 drivers/video/backlight/tosa_bl.c ret = devm_gpio_request_one(&client->dev, TOSA_GPIO_BL_C20MA,