From c8eef65a2fc311f8edca47f2e4ac2cccb70eb192 Mon Sep 17 00:00:00 2001 From: Charulatha V Date: Mon, 2 May 2011 15:21:42 +0530 Subject: gpio/omap: avoid cpu checks during module ena/disable Remove cpu-is checks while enabling/disabling OMAP GPIO module during a gpio request/free. Signed-off-by: Charulatha V Reviewed-by: Santosh Shilimkar Acked-by: Tony Lindgren Reviewed-by: Kevin Hilman Signed-off-by: Kevin Hilman --- drivers/gpio/gpio-omap.c | 53 +++++++++++++++++++++--------------------------- 1 file changed, 23 insertions(+), 30 deletions(-) (limited to 'drivers/gpio/gpio-omap.c') diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 2eed159d964e..5cc2c04cd0a6 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -83,6 +83,7 @@ struct gpio_bank { #define GPIO_INDEX(bank, gpio) (gpio % bank->width) #define GPIO_BIT(bank, gpio) (1 << GPIO_INDEX(bank, gpio)) +#define GPIO_MOD_CTRL_BIT BIT(0) static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input) { @@ -577,22 +578,18 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset) __raw_writel(__raw_readl(reg) | (1 << offset), reg); } #endif - if (!cpu_class_is_omap1()) { - if (!bank->mod_usage) { - void __iomem *reg = bank->base; - u32 ctrl; - - if (cpu_is_omap24xx() || cpu_is_omap34xx()) - reg += OMAP24XX_GPIO_CTRL; - else if (cpu_is_omap44xx()) - reg += OMAP4_GPIO_CTRL; - ctrl = __raw_readl(reg); - /* Module is enabled, clocks are not gated */ - ctrl &= 0xFFFFFFFE; - __raw_writel(ctrl, reg); - } - bank->mod_usage |= 1 << offset; + if (bank->regs->ctrl && !bank->mod_usage) { + void __iomem *reg = bank->base + bank->regs->ctrl; + u32 ctrl; + + ctrl = __raw_readl(reg); + /* Module is enabled, clocks are not gated */ + ctrl &= ~GPIO_MOD_CTRL_BIT; + __raw_writel(ctrl, reg); } + + bank->mod_usage |= 1 << offset; + spin_unlock_irqrestore(&bank->lock, flags); return 0; @@ -625,22 +622,18 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset) __raw_writel(1 << offset, reg); } #endif - if (!cpu_class_is_omap1()) { - bank->mod_usage &= ~(1 << offset); - if (!bank->mod_usage) { - void __iomem *reg = bank->base; - u32 ctrl; - - if (cpu_is_omap24xx() || cpu_is_omap34xx()) - reg += OMAP24XX_GPIO_CTRL; - else if (cpu_is_omap44xx()) - reg += OMAP4_GPIO_CTRL; - ctrl = __raw_readl(reg); - /* Module is disabled, clocks are gated */ - ctrl |= 1; - __raw_writel(ctrl, reg); - } + bank->mod_usage &= ~(1 << offset); + + if (bank->regs->ctrl && !bank->mod_usage) { + void __iomem *reg = bank->base + bank->regs->ctrl; + u32 ctrl; + + ctrl = __raw_readl(reg); + /* Module is disabled, clocks are gated */ + ctrl |= GPIO_MOD_CTRL_BIT; + __raw_writel(ctrl, reg); } + _reset_gpio(bank, bank->chip.base + offset); spin_unlock_irqrestore(&bank->lock, flags); } -- cgit v1.2.3