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OMAP2/3: GPIO: generalize prepare for idle

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Currently, the GPIO 'prepare' hook is only called when going to
off-mode, while the function is called 'prepare_for_retention.'  This
patch renames the function to 'prepare_for_idle' and calls it for any
powersate != PWRDM_POWER_ON passing in the powerstate.

The hook itself is then responsible for doing various preparation
based on the powerstate.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman
2009-01-27 11:09:24 -08:00
parent 699117a69f
commit 43ffcd9a04
4 changed files with 21 additions and 16 deletions
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19
arch/arm/plat-omap/gpio.c
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@@ -27,6 +27,7 @@
#include <mach/irqs.h>
#include <mach/gpio.h>
#include <asm/mach/irq.h>
#include <plat/powerdomain.h>
/*
* OMAP1510 GPIO registers
@@ -2041,19 +2042,24 @@ static struct sys_device omap_gpio_device = {
static int workaround_enabled;
void omap2_gpio_prepare_for_retention(void)
void omap2_gpio_prepare_for_idle(int power_state)
{
int i, c = 0;
int min = 0;
if (cpu_is_omap34xx())
min = 1;
/* Remove triggering for all non-wakeup GPIOs. Otherwise spurious
* IRQs will be generated. See OMAP2420 Errata item 1.101. */
for (i = min; i < gpio_bank_count; i++) {
struct gpio_bank *bank = &gpio_bank[i];
u32 l1, l2;
if (power_state > PWRDM_POWER_OFF)
continue;
/* If going to OFF, remove triggering for all
* non-wakeup GPIOs. Otherwise spurious IRQs will be
* generated. See OMAP2420 Errata item 1.101. */
if (!(bank->enabled_non_wakeup_gpios))
continue;
@@ -2101,19 +2107,20 @@ void omap2_gpio_prepare_for_retention(void)
workaround_enabled = 1;
}
void omap2_gpio_resume_after_retention(void)
void omap2_gpio_resume_after_idle(void)
{
int i;
int min = 0;
if (!workaround_enabled)
return;
if (cpu_is_omap34xx())
min = 1;
for (i = min; i < gpio_bank_count; i++) {
struct gpio_bank *bank = &gpio_bank[i];
u32 l, gen, gen0, gen1;
if (!workaround_enabled)
continue;
if (!(bank->enabled_non_wakeup_gpios))
continue;