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ARM: iop32x: fix power off handling for the EM7210 board

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This board was missed when converting all the others to proper
abstracted GPIO handling. Fix it up the right way by requesting
and driving GPIO line 0 high through gpiolib to power off the
machine.

Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Linus Walleij 2014-01-29 15:20:15 +01:00 committed by Olof Johansson
parent 608914b376
commit afbf1e156c
1 changed files with 27 additions and 5 deletions
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32
arch/arm/mach-iop32x/em7210.c
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@ -23,6 +23,7 @@
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <mach/hardware.h>
#include <linux/io.h>
#include <linux/irq.h>
@ -176,12 +177,36 @@ static struct platform_device em7210_serial_device = {
.resource = &em7210_uart_resource,
};
#define EM7210_HARDWARE_POWER 0
void em7210_power_off(void)
{
*IOP3XX_GPOE &= 0xfe;
*IOP3XX_GPOD |= 0x01;
int ret;
ret = gpio_direction_output(EM7210_HARDWARE_POWER, 1);
if (ret)
pr_crit("could not drive power off GPIO high\n");
}
static int __init em7210_request_gpios(void)
{
int ret;
if (!machine_is_em7210())
return 0;
ret = gpio_request(EM7210_HARDWARE_POWER, "power");
if (ret) {
pr_err("could not request power off GPIO\n");
return 0;
}
pm_power_off = em7210_power_off;
return 0;
}
device_initcall(em7210_request_gpios);
static void __init em7210_init_machine(void)
{
register_iop32x_gpio();
@ -194,9 +219,6 @@ static void __init em7210_init_machine(void)
i2c_register_board_info(0, em7210_i2c_devices,
ARRAY_SIZE(em7210_i2c_devices));
pm_power_off = em7210_power_off;
}
MACHINE_START(EM7210, "Lanner EM7210")