@@ -12,6 +12,7 @@
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/interrupt.h>
+#include <linux/ioport.h>
#include <linux/irq.h>
#include <linux/mutex.h>
#include <linux/pinctrl/pinctrl.h>
@@ -99,6 +100,7 @@ struct acpi_gpio_chip {
* @pin_config: pin bias as provided by ACPI
* @polarity: interrupt polarity as provided by ACPI
* @triggering: triggering type as provided by ACPI
+ * @shareable: share type as provided by ACPI (shared vs exclusive).
* @wake_capable: wake capability as provided by ACPI
* @debounce: debounce timeout as provided by ACPI
* @quirks: Linux specific quirks as provided by struct acpi_gpio_mapping
@@ -111,6 +113,7 @@ struct acpi_gpio_info {
int polarity;
int triggering;
bool wake_capable;
+ bool shareable;
unsigned int debounce;
unsigned int quirks;
};
@@ -760,6 +763,7 @@ static int acpi_populate_gpio_lookup(struct acpi_resource *ares, void *data)
lookup->info.debounce = agpio->debounce_timeout;
lookup->info.gpioint = gpioint;
lookup->info.wake_capable = acpi_gpio_irq_is_wake(&lookup->info.adev->dev, agpio);
+ lookup->info.shareable = agpio->shareable == ACPI_SHARED;
/*
* Polarity and triggering are only specified for GpioInt
@@ -1004,11 +1008,11 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,
}
/**
- * acpi_dev_gpio_irq_wake_get_by() - Find GpioInt and translate it to Linux IRQ number
+ * acpi_dev_get_gpio_irq_resource() - Find GpioInt and populate resource struct
* @adev: pointer to a ACPI device to get IRQ from
* @name: optional name of GpioInt resource
* @index: index of GpioInt resource (starting from %0)
- * @wake_capable: Set to true if the IRQ is wake capable
+ * @r: pointer to resource to populate with IRQ information.
*
* If the device has one or more GpioInt resources, this function can be
* used to translate from the GPIO offset in the resource to the Linux IRQ
@@ -1023,10 +1027,12 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,
* The GPIO is considered wake capable if the GpioInt resource specifies
* SharedAndWake or ExclusiveAndWake.
*
- * Return: Linux IRQ number (> %0) on success, negative errno on failure.
+ * IRQ number will be available in the resource structure.
+ *
+ * Return: 0 on success, negative errno on failure.
*/
-int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name, int index,
- bool *wake_capable)
+int acpi_dev_get_gpio_irq_resource(struct acpi_device *adev, const char *name, int index,
+ struct resource *r)
{
int idx, i;
unsigned int irq_flags;
@@ -1045,6 +1051,7 @@ int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name, in
if (info.gpioint && idx++ == index) {
unsigned long lflags = GPIO_LOOKUP_FLAGS_DEFAULT;
enum gpiod_flags dflags = GPIOD_ASIS;
+ unsigned long res_flags;
char label[32];
int irq;
@@ -1084,16 +1091,19 @@ int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name, in
}
/* avoid suspend issues with GPIOs when systems are using S3 */
- if (wake_capable && acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)
- *wake_capable = info.wake_capable;
+ if (info.wake_capable && !(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
+ info.wake_capable = false;
- return irq;
+ res_flags = acpi_dev_irq_flags(info.triggering, info.polarity,
+ info.shareable, info.wake_capable);
+ *r = DEFINE_RES_IRQ_NAMED_FLAGS(irq, NULL, res_flags);
+ return 0;
}
}
return -ENOENT;
}
-EXPORT_SYMBOL_GPL(acpi_dev_gpio_irq_wake_get_by);
+EXPORT_SYMBOL_GPL(acpi_dev_get_gpio_irq_resource);
static acpi_status
acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
@@ -203,6 +203,7 @@ int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable)
{
struct acpi_device *adev = ACPI_COMPANION(&client->dev);
struct list_head resource_list;
+ struct resource irqres;
struct i2c_acpi_irq_context irq_ctx = {
.irq = -ENOENT,
};
@@ -217,8 +218,13 @@ int i2c_acpi_get_irq(struct i2c_client *client, bool *wake_capable)
acpi_dev_free_resource_list(&resource_list);
- if (irq_ctx.irq == -ENOENT)
- irq_ctx.irq = acpi_dev_gpio_irq_wake_get(adev, 0, &irq_ctx.wake_capable);
+ if (irq_ctx.irq == -ENOENT) {
+ ret = acpi_dev_get_gpio_irq_resource(adev, NULL, 0, &irqres);
+ if (ret)
+ return ret;
+ irq_ctx.irq = irqres.start;
+ irq_ctx.wake_capable = irqres.flags & IORESOURCE_IRQ_WAKECAPABLE;
+ }
if (irq_ctx.irq < 0)
return irq_ctx.irq;
@@ -9,7 +9,6 @@
#define _LINUX_ACPI_H
#include <linux/errno.h>
-#include <linux/ioport.h> /* for struct resource */
#include <linux/resource_ext.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
@@ -17,6 +16,7 @@
#include <linux/uuid.h>
#include <linux/node.h>
+struct resource;
struct irq_domain;
struct irq_domain_ops;
@@ -1232,8 +1232,8 @@ bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
struct acpi_resource_gpio **agpio);
bool acpi_gpio_get_io_resource(struct acpi_resource *ares,
struct acpi_resource_gpio **agpio);
-int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name, int index,
- bool *wake_capable);
+int acpi_dev_get_gpio_irq_resource(struct acpi_device *adev, const char *name, int index,
+ struct resource *r);
#else
static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
struct acpi_resource_gpio **agpio)
@@ -1245,28 +1245,25 @@ static inline bool acpi_gpio_get_io_resource(struct acpi_resource *ares,
{
return false;
}
-static inline int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name,
- int index, bool *wake_capable)
+static inline int acpi_dev_get_gpio_irq_resource(struct acpi_device *adev, const char *name,
+ int index, struct resource *r)
{
return -ENXIO;
}
#endif
-static inline int acpi_dev_gpio_irq_wake_get(struct acpi_device *adev, int index,
- bool *wake_capable)
+static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index)
{
- return acpi_dev_gpio_irq_wake_get_by(adev, NULL, index, wake_capable);
-}
+ struct resource r = {};
+ int ret;
-static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name,
- int index)
-{
- return acpi_dev_gpio_irq_wake_get_by(adev, name, index, NULL);
+ ret = acpi_dev_get_gpio_irq_resource(adev, name, index, &r);
+ return ret ?: r.start;
}
static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index)
{
- return acpi_dev_gpio_irq_wake_get_by(adev, NULL, index, NULL);
+ return acpi_dev_gpio_irq_get_by(adev, NULL, index);
}
/* Device properties */