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

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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: Erik Benada <erikbenada@yahoo.ca>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This commit is contained in:
Erik Benada 2010-01-24 13:43:04 -08:00 committed by Nicolas Pitre
parent e9cfa167b6
commit cf11052a95
1 changed files with 27 additions and 6 deletions
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33
arch/arm/mach-orion5x/dns323-setup.c
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@ -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 */