diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-06-29 16:11:00 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-07-11 14:08:24 +0200 |
| commit | fea6d8efd023a2438c848c049480ea67ea0bca16 (patch) | |
| tree | ccf7e232dfb80c3955a0e3a0c47205ce5b8b689c /drivers/pinctrl/sunxi | |
| parent | pinctrl: sunxi: Add IRQCHIP_SKIP_SET_WAKE flag for pinctrl irq chip (diff) | |
| download | linux-fea6d8efd023a2438c848c049480ea67ea0bca16.tar.xz linux-fea6d8efd023a2438c848c049480ea67ea0bca16.zip | |
pinctrl: sunxi: Move setting of mux to irq type
With level triggered interrupt mask / unmask will get called for each
interrupt, doing the somewhat expensive mux setting on each unmask thus is
not a good idea. Instead add a request_resources callback and do it there.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/sunxi')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sunxi.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index c19933737fa5..8bdd65b924ca 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -531,6 +531,21 @@ static int sunxi_pinctrl_gpio_to_irq(struct gpio_chip *chip, unsigned offset) return irq_find_mapping(pctl->domain, desc->irqnum); } +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; + + func = sunxi_pinctrl_desc_find_function_by_pin(pctl, + pctl->irq_array[d->hwirq], "irq"); + if (!func) + return -EINVAL; + + /* Change muxing to INT mode */ + sunxi_pmx_set(pctl->pctl_dev, pctl->irq_array[d->hwirq], func->muxval); + + return 0; +} static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type) @@ -603,19 +618,11 @@ static void sunxi_pinctrl_irq_mask(struct irq_data *d) static void sunxi_pinctrl_irq_unmask(struct irq_data *d) { struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d); - struct sunxi_desc_function *func; u32 reg = sunxi_irq_ctrl_reg(d->hwirq); u8 idx = sunxi_irq_ctrl_offset(d->hwirq); unsigned long flags; u32 val; - func = sunxi_pinctrl_desc_find_function_by_pin(pctl, - pctl->irq_array[d->hwirq], - "irq"); - - /* Change muxing to INT mode */ - sunxi_pmx_set(pctl->pctl_dev, pctl->irq_array[d->hwirq], func->muxval); - spin_lock_irqsave(&pctl->lock, flags); /* Unmask the IRQ */ @@ -629,6 +636,7 @@ static struct irq_chip sunxi_pinctrl_irq_chip = { .irq_ack = sunxi_pinctrl_irq_ack, .irq_mask = sunxi_pinctrl_irq_mask, .irq_unmask = sunxi_pinctrl_irq_unmask, + .irq_request_resources = sunxi_pinctrl_irq_request_resources, .irq_set_type = sunxi_pinctrl_irq_set_type, .flags = IRQCHIP_SKIP_SET_WAKE, }; |