ARM: iop32x: fix power off handling for the EM7210 board
authorLinus Walleij <linus.walleij@linaro.org>
Wed, 29 Jan 2014 14:20:15 +0000 (15:20 +0100)
committerOlof Johansson <olof@lixom.net>
Fri, 31 Jan 2014 22:58:53 +0000 (14:58 -0800)
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>
arch/arm/mach-iop32x/em7210.c

index 177cd073a83bf4e6d9de439b478ae689ef95d283..77e1ff057303f0400221620e76ba50405d9735ef 100644 (file)
@@ -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")