diff options
| author |   Tero Kristo <tero.kristo@nokia.com> | 2008-12-22 14:27:12 +0200 |
|---|---|---|
| committer |   Kevin Hilman <khilman@deeprootsystems.com> | 2010-05-12 09:39:16 -0700 |
| commit | a118b5f3391fc60e1619a79f8ceb070bb7b39b2d (patch) | |
| tree | d8c7b3aadf2e6b92cabd3651f181b2196a76669e /arch/arm/plat-omap/gpio.c | |
| parent | Linux 2.6.34-rc7 (diff) | |
| download | linux-dev-a118b5f3391fc60e1619a79f8ceb070bb7b39b2d.tar.xz linux-dev-a118b5f3391fc60e1619a79f8ceb070bb7b39b2d.zip | |
OMAP3: GPIO fixes for off-mode
Off mode is now using the omap2 retention fix code for scanning GPIOs
during off-mode transitions. All the *non_wakeup_gpios variables
are now used for off-mode transition tracking on OMAP3. This patch fixes
cases where GPIO state changes are missed during off-mode.
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/plat-omap/gpio.c')
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 45a225d09125..6216f4f09e82 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -731,7 +731,9 @@ static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, __raw_writel(1 << gpio, bank->base + OMAP24XX_GPIO_CLEARWKUENA); } - } else { + } + /* This part needs to be executed always for OMAP34xx */ + if (cpu_is_omap34xx() || (bank->non_wakeup_gpios & gpio_bit)) { if (trigger != 0) bank->enabled_non_wakeup_gpios |= gpio_bit; else @@ -1845,7 +1847,8 @@ static int __init _omap_gpio_init(void) __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL); } - if (i < ARRAY_SIZE(non_wakeup_gpios)) + if (cpu_is_omap24xx() && + i < ARRAY_SIZE(non_wakeup_gpios)) bank->non_wakeup_gpios = non_wakeup_gpios[i]; gpio_count = 32; } @@ -2031,10 +2034,13 @@ static int workaround_enabled; void omap2_gpio_prepare_for_retention(void) { 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 = 0; i < gpio_bank_count; i++) { + for (i = min; i < gpio_bank_count; i++) { struct gpio_bank *bank = &gpio_bank[i]; u32 l1, l2; @@ -2088,10 +2094,13 @@ void omap2_gpio_prepare_for_retention(void) void omap2_gpio_resume_after_retention(void) { int i; + int min = 0; if (!workaround_enabled) return; - for (i = 0; i < gpio_bank_count; i++) { + 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; @@ -2119,7 +2128,7 @@ void omap2_gpio_resume_after_retention(void) * horribly racy, but it's the best we can do to work around * this silicon bug. */ l ^= bank->saved_datain; - l &= bank->non_wakeup_gpios; + l &= bank->enabled_non_wakeup_gpios; /* * No need to generate IRQs for the rising edge for gpio IRQs |