DevKit8500D/A User Manual - DMCS Pages for Students

* PTU - Pull type Up
* DIS - Pull type selection is inactive
* EN - Pull type selection is active
* M0 - Mode 0
* The commented string gives the final mux configuration for that pin
*/
MUX_VAL(CP(SYS_CLKOUT2),
(IDIS | PTU | EN | M4)) /*GPIO_186*/\
3) Driver design:
linux-2.6.32-devkit8500/drivers/leds/leds-gpio.c
a) Structure for platform_driver_register to register gpio_leds.
static struct platform_driver gpio_led_driver = {
.probe
.remove
= gpio_led_probe,
= __devexit_p(gpio_led_remove),
.driver = {
.name
= "leds-gpio",
.owner = THIS_MODULE,
},
};
static int __init gpio_led_init(void)
{
int ret;
#ifdef CONFIG_LEDS_GPIO_PLATFORM
ret = platform_driver_register(&gpio_led_driver);
if (ret)
return ret;
#endif
#ifdef CONFIG_LEDS_GPIO_OF
ret = of_register_platform_driver(&of_gpio_leds_driver);
#endif
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