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authorSamuel Holland <samuel@sholland.org>2020-01-17 15:33:39 -0600
committerLinus Walleij <linus.walleij@linaro.org>2020-02-21 15:14:24 +0100
commita59c99d9eaf90e6426d9bfe3b0a5e5b78010c72e (patch)
tree0f013d54900496759a4919558968fe27681740ea /drivers/pinctrl
parent86ecb7d6853c77711c14cb6600179196f179ee2d (diff)
downloadlinux-a59c99d9eaf90e6426d9bfe3b0a5e5b78010c72e.tar.bz2
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>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/sunxi/pinctrl-sunxi.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index b35c3245ab3f..9ede17ab6638 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -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,
};