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gpio/omap: optimize suspend and resume functions

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There is no need to operate on all the banks every time the function is called.
Just operate on the current bank passed by the framework.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Tarun Kanti DebBarma 2011-11-24 01:48:52 +05:30
parent 55b93c3252
commit 065cd795d2
1 changed files with 29 additions and 25 deletions
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54
drivers/gpio/gpio-omap.c
View file

@ -1052,6 +1052,8 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
goto err_free;
}
platform_set_drvdata(pdev, bank);
pm_runtime_enable(bank->dev);
pm_runtime_irq_safe(bank->dev);
pm_runtime_get_sync(bank->dev);
@ -1080,44 +1082,46 @@ err_exit:
#if defined(CONFIG_PM_SLEEP)
static int omap_gpio_suspend(struct device *dev)
{
struct gpio_bank *bank;
struct platform_device *pdev = to_platform_device(dev);
struct gpio_bank *bank = platform_get_drvdata(pdev);
void __iomem *base = bank->base;
void __iomem *wakeup_enable;
unsigned long flags;
list_for_each_entry(bank, &omap_gpio_list, node) {
void __iomem *base = bank->base;
void __iomem *wake_status;
unsigned long flags;
if (!bank->mod_usage || !bank->loses_context)
return 0;
if (!bank->regs->wkup_en)
return 0;
if (!bank->regs->wkup_en || !bank->suspend_wakeup)
return 0;
wake_status = bank->base + bank->regs->wkup_en;
wakeup_enable = bank->base + bank->regs->wkup_en;
spin_lock_irqsave(&bank->lock, flags);
bank->saved_wakeup = __raw_readl(wake_status);
_gpio_rmw(base, bank->regs->wkup_en, 0xffffffff, 0);
_gpio_rmw(base, bank->regs->wkup_en, bank->suspend_wakeup, 1);
spin_unlock_irqrestore(&bank->lock, flags);
}
spin_lock_irqsave(&bank->lock, flags);
bank->saved_wakeup = __raw_readl(wakeup_enable);
_gpio_rmw(base, bank->regs->wkup_en, 0xffffffff, 0);
_gpio_rmw(base, bank->regs->wkup_en, bank->suspend_wakeup, 1);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}
static int omap_gpio_resume(struct device *dev)
{
struct gpio_bank *bank;
struct platform_device *pdev = to_platform_device(dev);
struct gpio_bank *bank = platform_get_drvdata(pdev);
void __iomem *base = bank->base;
unsigned long flags;
list_for_each_entry(bank, &omap_gpio_list, node) {
void __iomem *base = bank->base;
unsigned long flags;
if (!bank->mod_usage || !bank->loses_context)
return 0;
if (!bank->regs->wkup_en)
return 0;
if (!bank->regs->wkup_en || !bank->saved_wakeup)
return 0;
spin_lock_irqsave(&bank->lock, flags);
_gpio_rmw(base, bank->regs->wkup_en, 0xffffffff, 0);
_gpio_rmw(base, bank->regs->wkup_en, bank->saved_wakeup, 1);
spin_unlock_irqrestore(&bank->lock, flags);
}
spin_lock_irqsave(&bank->lock, flags);
_gpio_rmw(base, bank->regs->wkup_en, 0xffffffff, 0);
_gpio_rmw(base, bank->regs->wkup_en, bank->saved_wakeup, 1);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
}