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pinctrl: sunxi: Move setting of mux to irq type

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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>
This commit is contained in:
Hans de Goede 2014-06-29 16:11:00 +02:00 committed by Linus Walleij
parent 578c0a8721
commit fea6d8efd0
1 changed files with 16 additions and 8 deletions
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24
drivers/pinctrl/sunxi/pinctrl-sunxi.c
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@ -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,
};