diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2013-12-03 15:20:34 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-12-09 15:16:31 +0100 |
| commit | 1d2d8ce61f7d47e418f26b0c657b5d8874b85df4 (patch) | |
| tree | 4687733670c35508eeba4235f7d35358ddffa117 | |
| parent | d46f421608575a76c1f8b605005b2f9ac9a35db5 (diff) | |
pinctrl: baytrail: lock IRQs when starting them
This uses the new API for tagging GPIO lines as in use by
IRQs. This enforces a few semantic checks on how the underlying
GPIO line is used.
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/pinctrl/pinctrl-baytrail.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-baytrail.c b/drivers/pinctrl/pinctrl-baytrail.c index 1174ea86b6e9..5888066d80c2 100644 --- a/drivers/pinctrl/pinctrl-baytrail.c +++ b/drivers/pinctrl/pinctrl-baytrail.c @@ -372,11 +372,33 @@ static void byt_irq_mask(struct irq_data *d) { } +static unsigned int byt_irq_startup(struct irq_data *d) +{ + struct byt_gpio *vg = irq_data_get_irq_chip_data(d); + + if (gpio_lock_as_irq(&vg->chip, irqd_to_hwirq(d))) + dev_err(vg->chip.dev, + "unable to lock HW IRQ %lu for IRQ\n", + irqd_to_hwirq(d)); + byt_irq_unmask(d); + return 0; +} + +static void byt_irq_shutdown(struct irq_data *d) +{ + struct byt_gpio *vg = irq_data_get_irq_chip_data(d); + + byt_irq_mask(d); + gpio_unlock_as_irq(&vg->chip, irqd_to_hwirq(d)); +} + static struct irq_chip byt_irqchip = { .name = "BYT-GPIO", .irq_mask = byt_irq_mask, .irq_unmask = byt_irq_unmask, .irq_set_type = byt_irq_type, + .irq_startup = byt_irq_startup, + .irq_shutdown = byt_irq_shutdown, }; static void byt_gpio_irq_init_hw(struct byt_gpio *vg) |