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xtensa: register gpio chip before use 

Platform initialization sets up the LED heartbeat that is controlled
via GPIO.  Requesting the GPIO pins fails, however, as the chip is
only initialized later by a device_initcall().

Fix this up by exporting the initialization function.  Let the
platform set up the chip before it starts using it.

Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Johannes Weiner 2009-05-11 15:43:34 +02:00 committed by Chris Zankel
parent 586411dcd1
commit 1fb137c1e3
3 changed files with 10 additions and 2 deletions
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3
arch/xtensa/platforms/s6105/setup.c
View File

@ -10,6 +10,8 @@
#include <asm/bootparam.h>
#include <variant/hardware.h>
#include <variant/gpio.h>
#include <platform/gpio.h>
void platform_halt(void)
@ -47,6 +49,7 @@ void __init platform_setup(char **cmdline)
void __init platform_init(bp_tag_t *first)
{
s6_gpio_init();
gpio_request(GPIO_LED1_NGREEN, "led1_green");
gpio_request(GPIO_LED1_RED, "led1_red");
gpio_direction_output(GPIO_LED1_NGREEN, 1);

3
arch/xtensa/variants/s6000/gpio.c
View File

@ -64,8 +64,7 @@ static struct gpio_chip gpiochip = {
.exported = 0, /* no exporting to userspace */
};
static int gpio_init(void)
int s6_gpio_init(void)
{
return gpiochip_add(&gpiochip);
}
device_initcall(gpio_init);

6
arch/xtensa/variants/s6000/include/variant/gpio.h Normal file
View File

@ -0,0 +1,6 @@
#ifndef _XTENSA_VARIANT_S6000_GPIO_H
#define _XTENSA_VARIANT_S6000_GPIO_H
extern int s6_gpio_init(void);
#endif /* _XTENSA_VARIANT_S6000_GPIO_H */