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pinctrl: sunxi: Forward calls to irq_set_irq_wake 

The pinctrl irqchip may be connected to an irqchip that implements the
.irq_set_wake callback, such as the R_INTC on A31 and newer sunxi SoCs.
In order for GPIOs to be able to trigger wakeup, the IRQ from the
pinctrl to the upper irqchip must also be enabled for wakeup. Since the
kernel's IRQ core already manages the "wake_depth" of each IRQ, no
additional accounting is needed in the pinctrl driver.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Link: https://lore.kernel.org/r/20200117213340.47714-1-samuel@sholland.org
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Samuel Holland 2020-01-17 15:33:39 -06:00 committed by Linus Walleij
parent 86ecb7d685
commit a59c99d9ea
1 changed files with 12 additions and 2 deletions
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14
drivers/pinctrl/sunxi/pinctrl-sunxi.c
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@ -13,6 +13,7 @@
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/gpio/driver.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/export.h>
@ -1058,6 +1059,14 @@ static void sunxi_pinctrl_irq_ack_unmask(struct irq_data *d)
sunxi_pinctrl_irq_unmask(d);
}
static int sunxi_pinctrl_irq_set_wake(struct irq_data *d, unsigned int on)
{
struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
u8 bank = d->hwirq / IRQ_PER_BANK;
return irq_set_irq_wake(pctl->irq[bank], on);
}
static struct irq_chip sunxi_pinctrl_edge_irq_chip = {
.name = "sunxi_pio_edge",
.irq_ack = sunxi_pinctrl_irq_ack,
@ -1066,7 +1075,7 @@ static struct irq_chip sunxi_pinctrl_edge_irq_chip = {
.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,
.irq_set_wake = sunxi_pinctrl_irq_set_wake,
};
static struct irq_chip sunxi_pinctrl_level_irq_chip = {
@ -1081,7 +1090,8 @@ static struct irq_chip sunxi_pinctrl_level_irq_chip = {
.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 |
.irq_set_wake = sunxi_pinctrl_irq_set_wake,
.flags = IRQCHIP_EOI_THREADED |
IRQCHIP_EOI_IF_HANDLED,
};