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authorLinus Walleij <linus.walleij@linaro.org>2014-01-29 18:20:15 +0400
committerOlof Johansson <olof@lixom.net>2014-02-01 02:58:53 +0400
commitafbf1e156c1c17eccd4b2092ba4fed09279c5ccc (patch)
tree537e94fecd35da91ecc763cdd770a89af0b4d6d4 /arch/arm/mach-iop32x
parent608914b37688d9a67be8b6dfc216f24d95298502 (diff)
downloadlinux-afbf1e156c1c17eccd4b2092ba4fed09279c5ccc.tar.xz
ARM: iop32x: fix power off handling for the EM7210 board
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>
Diffstat (limited to 'arch/arm/mach-iop32x')
-rw-r--r--arch/arm/mach-iop32x/em7210.c32
1 files changed, 27 insertions, 5 deletions
diff --git a/arch/arm/mach-iop32x/em7210.c b/arch/arm/mach-iop32x/em7210.c
index 177cd073a83b..77e1ff057303 100644
--- a/arch/arm/mach-iop32x/em7210.c
+++ b/arch/arm/mach-iop32x/em7210.c
@@ -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>
@@ -176,11 +177,35 @@ 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)
{
@@ -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")