diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2014-07-14 21:24:36 +0400 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-07-28 14:10:46 +0400 |
| commit | f83549d61d6de28ea8cbbef9f8d12b697c6ed1dd (patch) | |
| tree | 7ebbfd7084b8a99fe991ed7bfa310a4b21b288cf /drivers/pinctrl | |
| parent | b547c8007e83a476b946237d09227668fe286a57 (diff) | |
| download | linux-f83549d61d6de28ea8cbbef9f8d12b697c6ed1dd.tar.xz | |
pinctrl: sunxi: use gpiolib API to mark a GPIO used as an IRQ
When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sunxi.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index 96ee6bb0fad5..9dba7afe94d6 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -541,18 +541,33 @@ static int sunxi_pinctrl_irq_request_resources(struct irq_data *d) { struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d); struct sunxi_desc_function *func; + int ret; func = sunxi_pinctrl_desc_find_function_by_pin(pctl, pctl->irq_array[d->hwirq], "irq"); if (!func) return -EINVAL; + ret = gpio_lock_as_irq(pctl->chip, pctl->irq_array[d->hwirq]); + if (ret) { + dev_err(pctl->dev, "unable to lock HW IRQ %lu for IRQ\n", + irqd_to_hwirq(d)); + return ret; + } + /* Change muxing to INT mode */ sunxi_pmx_set(pctl->pctl_dev, pctl->irq_array[d->hwirq], func->muxval); return 0; } +static void sunxi_pinctrl_irq_release_resources(struct irq_data *d) +{ + struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d); + + gpio_unlock_as_irq(pctl->chip, pctl->irq_array[d->hwirq]); +} + static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type) { struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d); @@ -657,6 +672,7 @@ static struct irq_chip sunxi_pinctrl_edge_irq_chip = { .irq_mask = sunxi_pinctrl_irq_mask, .irq_unmask = sunxi_pinctrl_irq_unmask, .irq_request_resources = sunxi_pinctrl_irq_request_resources, + .irq_release_resources = sunxi_pinctrl_irq_release_resources, .irq_set_type = sunxi_pinctrl_irq_set_type, .flags = IRQCHIP_SKIP_SET_WAKE, }; @@ -670,6 +686,7 @@ static struct irq_chip sunxi_pinctrl_level_irq_chip = { .irq_enable = sunxi_pinctrl_irq_ack_unmask, .irq_disable = sunxi_pinctrl_irq_mask, .irq_request_resources = sunxi_pinctrl_irq_request_resources, + .irq_release_resources = sunxi_pinctrl_irq_release_resources, .irq_set_type = sunxi_pinctrl_irq_set_type, .flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED, |