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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-omap1/leds.c
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/*

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 * linux/arch/arm/mach-omap1/leds.c

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 *

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 * OMAP LEDs dispatcher

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 */

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#include <linux/kernel.h>

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#include <linux/init.h>

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#include <asm/leds.h>

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#include <asm/mach-types.h>

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#include <mach/gpio.h>

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#include <plat/mux.h>

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#include "leds.h"

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static int __init

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omap_leds_init(void)

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{

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	if (!cpu_class_is_omap1())

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		return -ENODEV;

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	if (machine_is_omap_innovator())

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		leds_event = innovator_leds_event;

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	else if (machine_is_omap_h2()

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			|| machine_is_omap_h3()

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			|| machine_is_omap_perseus2())

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		leds_event = h2p2_dbg_leds_event;

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	else if (machine_is_omap_osk())

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		leds_event = osk_leds_event;

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	else

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		return -1;

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	if (machine_is_omap_h2()

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			|| machine_is_omap_h3()

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#ifdef	CONFIG_OMAP_OSK_MISTRAL

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			|| machine_is_omap_osk()

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#endif

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			) {

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		/* LED1/LED2 pins can be used as GPIO (as done here), or by

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		 * the LPG (works even in deep sleep!), to drive a bicolor

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		 * LED on the H2 sample board, and another on the H2/P2

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		 * "surfer" expansion board.

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		 *

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		 * The same pins drive a LED on the OSK Mistral board, but

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		 * that's a different kind of LED (just one color at a time).

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		 */

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		omap_cfg_reg(P18_1610_GPIO3);

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		if (gpio_request(3, "LED red") == 0)

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			gpio_direction_output(3, 1);

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		else

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			printk(KERN_WARNING "LED: can't get GPIO3/red?\n");

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		omap_cfg_reg(MPUIO4);

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		if (gpio_request(OMAP_MPUIO(4), "LED green") == 0)

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			gpio_direction_output(OMAP_MPUIO(4), 1);

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		else

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			printk(KERN_WARNING "LED: can't get MPUIO4/green?\n");

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	}

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	leds_event(led_start);

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	return 0;

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}

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__initcall(omap_leds_init);

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