diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-05-23 12:13:33 +0530 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-04-23 11:04:49 +0200 |
| commit | 6c12fe888a237c4a32d194fca8624c5c1d55e1b3 (patch) | |
| tree | 9acca59ad27c6fe5c41045f7befee3865ad06c86 /drivers/gpio | |
| parent | b982ff0e9a52553db246f7e171c03e7e0efedbe5 (diff) | |
| download | linux-3.10-6c12fe888a237c4a32d194fca8624c5c1d55e1b3.tar.gz linux-3.10-6c12fe888a237c4a32d194fca8624c5c1d55e1b3.tar.bz2 linux-3.10-6c12fe888a237c4a32d194fca8624c5c1d55e1b3.zip | |
gpio/nomadik: cache [rf]w?imsc
Cache two more registers in the GPIO controller.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-nomadik.c | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c index f1ebd05a9c5..45a0e0a3d6e 100644 --- a/drivers/gpio/gpio-nomadik.c +++ b/drivers/gpio/gpio-nomadik.c @@ -58,6 +58,8 @@ struct nmk_gpio_chip { u32 real_wake; u32 rwimsc; u32 fwimsc; + u32 rimsc; + u32 fimsc; u32 pull_up; }; @@ -149,8 +151,8 @@ static void __nmk_gpio_set_mode_safe(struct nmk_gpio_chip *nmk_chip, unsigned offset, int gpio_mode, bool glitch) { - u32 rwimsc = readl(nmk_chip->addr + NMK_GPIO_RWIMSC); - u32 fwimsc = readl(nmk_chip->addr + NMK_GPIO_FWIMSC); + u32 rwimsc = nmk_chip->rwimsc; + u32 fwimsc = nmk_chip->fwimsc; if (glitch && nmk_chip->set_ioforce) { u32 bit = BIT(offset); @@ -555,27 +557,38 @@ static void __nmk_gpio_irq_modify(struct nmk_gpio_chip *nmk_chip, int gpio, enum nmk_gpio_irq_type which, bool enable) { - u32 rimsc = which == WAKE ? NMK_GPIO_RWIMSC : NMK_GPIO_RIMSC; - u32 fimsc = which == WAKE ? NMK_GPIO_FWIMSC : NMK_GPIO_FIMSC; u32 bitmask = nmk_gpio_get_bitmask(gpio); - u32 reg; + u32 *rimscval; + u32 *fimscval; + u32 rimscreg; + u32 fimscreg; + + if (which == NORMAL) { + rimscreg = NMK_GPIO_RIMSC; + fimscreg = NMK_GPIO_FIMSC; + rimscval = &nmk_chip->rimsc; + fimscval = &nmk_chip->fimsc; + } else { + rimscreg = NMK_GPIO_RWIMSC; + fimscreg = NMK_GPIO_FWIMSC; + rimscval = &nmk_chip->rwimsc; + fimscval = &nmk_chip->fwimsc; + } /* we must individually set/clear the two edges */ if (nmk_chip->edge_rising & bitmask) { - reg = readl(nmk_chip->addr + rimsc); if (enable) - reg |= bitmask; + *rimscval |= bitmask; else - reg &= ~bitmask; - writel(reg, nmk_chip->addr + rimsc); + *rimscval &= ~bitmask; + writel(*rimscval, nmk_chip->addr + rimscreg); } if (nmk_chip->edge_falling & bitmask) { - reg = readl(nmk_chip->addr + fimsc); if (enable) - reg |= bitmask; + *fimscval |= bitmask; else - reg &= ~bitmask; - writel(reg, nmk_chip->addr + fimsc); + *fimscval &= ~bitmask; + writel(*fimscval, nmk_chip->addr + fimscreg); } } @@ -1011,9 +1024,6 @@ void nmk_gpio_wakeups_suspend(void) clk_enable(chip->clk); - chip->rwimsc = readl(chip->addr + NMK_GPIO_RWIMSC); - chip->fwimsc = readl(chip->addr + NMK_GPIO_FWIMSC); - writel(chip->rwimsc & chip->real_wake, chip->addr + NMK_GPIO_RWIMSC); writel(chip->fwimsc & chip->real_wake, |