LED_DATA_REG
gsc_writeb( value, LED_DATA_REG );
gsc_writeb( value | LED_STROBE, LED_DATA_REG );
gsc_writeb( leds, LED_DATA_REG );
LED_DATA_REG = data_reg;
pr_info("led: LED display at %#lx\n", LED_DATA_REG);
LED_DATA_REG = data_reg;
LED_DATA_REG);
request_mem_region((unsigned long)LED_DATA_REG, 1, "led_data");