diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2011-05-23 12:13:33 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 16:00:08 +0200 |
| commit | d192996c9fc97be39e1faa1d042401db4b45f03e (patch) | |
| tree | 4447169ccd5c51b60a2a12ad5c9db607f1c66d82 /drivers/gpio | |
| parent | cb851e0771a93df4b0ed46ea299ea58eb74f043f (diff) | |
nmk-gpio: cache [rf]w?imsc
ST-Ericsson Linux next: -
ST-Ericsson ID: ER335433
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I21df49d0f45a3d096eb37d6de10514988b0de44f
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/23928
Reviewed-by: QATEST
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/29310
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 2e107865a17..c5a18f917c3 100644 --- a/drivers/gpio/gpio-nomadik.c +++ b/drivers/gpio/gpio-nomadik.c @@ -57,6 +57,8 @@ struct nmk_gpio_chip { u32 real_wake; u32 rwimsc; u32 fwimsc; + u32 rimsc; + u32 fimsc; u32 pull_up; }; @@ -148,8 +150,8 @@ 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); @@ -554,27 +556,38 @@ 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); } } @@ -1010,9 +1023,6 @@ 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, |