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Commit f9f451d9 authored by David Brownell's avatar David Brownell Committed by Richard Purdie
Browse files

leds: leds-gpio for ngw100 



Add GPIO leds to the NGW100 platform and its defconfig.
Access through /sys/class/leds/{a,b,sys}/* files; one
defaults to a heartbeat.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
parent e3986f63

arch/avr32/boards/atngw100/setup.c

+31 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/linkage.h>

#include <linux/platform_device.h>

#include <linux/types.h>

#include <linux/leds.h>

#include <linux/spi/spi.h>



#include <asm/io.h>
@@ -21,6 +22,7 @@ 
#include <asm/arch/at32ap7000.h>

#include <asm/arch/board.h>

#include <asm/arch/init.h>

#include <asm/arch/portmux.h>



/* Initialized by bootloader-specific startup code. */

struct tag *bootloader_tags __initdata;
@@ -100,8 +102,31 @@ void __init setup_board(void) 
	at32_setup_serial_console(0);

}



static const struct gpio_led ngw_leds[] = {

	{ .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,

		.default_trigger = "heartbeat",

	},

	{ .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },

	{ .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },

};



static const struct gpio_led_platform_data ngw_led_data = {

	.num_leds =	ARRAY_SIZE(ngw_leds),

	.leds =		(void *) ngw_leds,

};



static struct platform_device ngw_gpio_leds = {

	.name =		"leds-gpio",

	.id =		-1,

	.dev = {

		.platform_data = (void *) &ngw_led_data,

	}

};



static int __init atngw100_init(void)

{

	unsigned	i;



	/*

	 * ATNGW100 uses 16-bit SDRAM interface, so we don't need to

	 * reserve any pins for it.
@@ -116,6 +141,12 @@ static int __init atngw100_init(void) 


	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));



	for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {

		at32_select_gpio(ngw_leds[i].gpio,

				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);

	}

	platform_device_register(&ngw_gpio_leds);



	return 0;

}

postcore_initcall(atngw100_init);

arch/avr32/configs/atngw100_defconfig

+15 −1
Original line number Diff line number Diff line
@@ -712,7 +712,21 @@ CONFIG_SPI_ATMEL=y 
#

# LED devices

#

# CONFIG_NEW_LEDS is not set

CONFIG_NEW_LEDS=y

CONFIG_LEDS_CLASS=y



#

# LED drivers

#

CONFIG_LEDS_GPIO=y



#

# LED Triggers

#

CONFIG_LEDS_TRIGGERS=y

CONFIG_LEDS_TRIGGER_TIMER=y

CONFIG_LEDS_TRIGGER_HEARTBEAT=y





#

# LED drivers