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Commit cf11052a authored by Erik Benada's avatar Erik Benada Committed by Nicolas Pitre
Browse files

[ARM] orion5x: D-link DNS-323 rev. B1 power-off 



This patch fixes power LED blinking and power-off on DNS-323 rev. B1.

GPIO pin 3 has to be set to 1 to stop power LED blinking and to allow the LED to be controlled via leds-gpio. This pin has to be also set to 1 for power-off to work.
To power-off the rev. B1 machine, pin 8 has to be set to 1 and then set to 0 to do actual power-off.

Tested on my DNS-323 rev. B1

Signed-off-by: default avatarErik Benada <erikbenada@yahoo.ca>
Signed-off-by: default avatarNicolas Pitre <nico@marvell.com>
parent e9cfa167

arch/arm/mach-orion5x/dns323-setup.c

+27 −6
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 


#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/pci.h>

#include <linux/irq.h>
@@ -32,6 +33,7 @@ 


#define DNS323_GPIO_LED_RIGHT_AMBER	1

#define DNS323_GPIO_LED_LEFT_AMBER	2

#define DNS323_GPIO_SYSTEM_UP		3

#define DNS323_GPIO_LED_POWER		5

#define DNS323_GPIO_OVERTEMP		6

#define DNS323_GPIO_RTC			7
@@ -239,7 +241,7 @@ static struct gpio_led dns323_leds[] = { 
	{

		.name = "power:blue",

		.gpio = DNS323_GPIO_LED_POWER,

		.active_low = 1,

		.default_state = LEDS_GPIO_DEFSTATE_ON,

	}, {

		.name = "right:amber",

		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
@@ -334,7 +336,7 @@ static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = { 
	{  0, MPP_UNUSED },

	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */

	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */

	{  3, MPP_UNUSED },

	{  3, MPP_GPIO },		/* system up flag */

	{  4, MPP_GPIO },		/* power button LED */

	{  5, MPP_GPIO },		/* power button LED */

	{  6, MPP_GPIO },		/* GMT G751-2f overtemp */
@@ -372,13 +374,23 @@ static struct i2c_board_info __initdata dns323_i2c_devices[] = { 
	},

};



/* DNS-323 specific power off method */

static void dns323_power_off(void)

/* DNS-323 rev. A specific power off method */

static void dns323a_power_off(void)

{

	pr_info("%s: triggering power-off...\n", __func__);

	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);

}



/* DNS-323 rev B specific power off method */

static void dns323b_power_off(void)

{

	pr_info("%s: triggering power-off...\n", __func__);

	/* Pin has to be changed to 1 and back to 0 to do actual power off. */

	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);

	mdelay(100);

	gpio_set_value(DNS323_GPIO_POWER_OFF, 0);

}



static void __init dns323_init(void)

{

	/* Setup basic Orion functions. Need to be called early. */
@@ -424,11 +436,20 @@ static void __init dns323_init(void) 
	if (dns323_dev_id() == MV88F5182_DEV_ID)

		orion5x_sata_init(&dns323_sata_data);



	/* register dns323 specific power-off method */

	/* The 5182 has flag to indicate the system is up. Without this flag

	 * set, power LED will flash and cannot be controlled via leds-gpio.

	 */

	if (dns323_dev_id() == MV88F5182_DEV_ID)

		gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);



	/* Register dns323 specific power-off method */

	if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||

	    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)

		pr_err("DNS323: failed to setup power-off GPIO\n");

	pm_power_off = dns323_power_off;

	if (dns323_dev_id() == MV88F5182_DEV_ID)

		pm_power_off = dns323b_power_off;

	else

		pm_power_off = dns323a_power_off;

}



/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */