diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2014-01-15 10:07:07 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-01-15 13:59:44 +0100 |
| commit | 655dada62779917e2337b9abf8ab95e891cc0938 (patch) | |
| tree | aea78ed54dd956163418259153b396b0ae22c7b3 /drivers/pinctrl | |
| parent | pinctrl: sirf: put gpio interrupt pin into input status automatically (diff) | |
| download | linux-655dada62779917e2337b9abf8ab95e891cc0938.tar.xz linux-655dada62779917e2337b9abf8ab95e891cc0938.zip | |
pinctrl: sirf: 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.
Also assign the gpio_chip.dev pointer to be used for error
messages.
Cc: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/sirf/pinctrl-sirf.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.c b/drivers/pinctrl/sirf/pinctrl-sirf.c index b637f5ab022c..a0d6152701cd 100644 --- a/drivers/pinctrl/sirf/pinctrl-sirf.c +++ b/drivers/pinctrl/sirf/pinctrl-sirf.c @@ -594,12 +594,34 @@ static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type) return 0; } +static unsigned int sirfsoc_gpio_irq_startup(struct irq_data *d) +{ + struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); + + if (gpio_lock_as_irq(&bank->chip.gc, d->hwirq)) + dev_err(bank->chip.gc.dev, + "unable to lock HW IRQ %lu for IRQ\n", + d->hwirq); + sirfsoc_gpio_irq_unmask(d); + return 0; +} + +static void sirfsoc_gpio_irq_shutdown(struct irq_data *d) +{ + struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); + + sirfsoc_gpio_irq_mask(d); + gpio_unlock_as_irq(&bank->chip.gc, d->hwirq); +} + static struct irq_chip sirfsoc_irq_chip = { .name = "sirf-gpio-irq", .irq_ack = sirfsoc_gpio_irq_ack, .irq_mask = sirfsoc_gpio_irq_mask, .irq_unmask = sirfsoc_gpio_irq_unmask, .irq_set_type = sirfsoc_gpio_irq_type, + .irq_startup = sirfsoc_gpio_irq_startup, + .irq_shutdown = sirfsoc_gpio_irq_shutdown, }; static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc) @@ -877,6 +899,7 @@ static int sirfsoc_gpio_probe(struct device_node *np) bank->chip.gc.of_node = np; bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate; bank->chip.gc.of_gpio_n_cells = 2; + bank->chip.gc.dev = &pdev->dev; bank->chip.regs = regs; bank->id = i; bank->is_marco = is_marco; |