In preparation for more refactoring make i2c_acpi_get_irq available
outside i2c-core-acpi.c.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
Changes since v4:
- Leave i2c_acpi_get_irq accepting an acpi_device, this should
avoid the NULL pointer issue we had with i2c_acpi_find_client_by_adev
Thanks,
Charles
drivers/i2c/i2c-core-acpi.c | 10 +++++++++-
drivers/i2c/i2c-core.h | 9 +++++++++
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 7d4d66ba752d4..0ddfcca6091e1 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -144,7 +144,15 @@ static int i2c_acpi_add_resource(struct acpi_resource *ares, void *data)
return 1; /* No need to add resource to the list */
}
-static int i2c_acpi_get_irq(struct acpi_device *adev)
+/**
+ * i2c_acpi_get_irq - get device IRQ number from ACPI
+ * @client: Pointer to the I2C client device
+ *
+ * Find the IRQ number used by a specific client device.
+ *
+ * Return: The IRQ number or an error code.
+ */
+int i2c_acpi_get_irq(struct acpi_device *adev)
{
struct list_head resource_list;
int irq = -ENOENT;
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h
index 2a3b28bf826b1..4fbe0a0bcc4c4 100644
--- a/drivers/i2c/i2c-core.h
+++ b/drivers/i2c/i2c-core.h
@@ -58,11 +58,15 @@ static inline int __i2c_check_suspended(struct i2c_adapter *adap)
return 0;
}
+struct acpi_device;
+
#ifdef CONFIG_ACPI
const struct acpi_device_id *
i2c_acpi_match_device(const struct acpi_device_id *matches,
struct i2c_client *client);
void i2c_acpi_register_devices(struct i2c_adapter *adap);
+
+int i2c_acpi_get_irq(struct acpi_device *adev);
#else /* CONFIG_ACPI */
static inline void i2c_acpi_register_devices(struct i2c_adapter *adap) { }
static inline const struct acpi_device_id *
@@ -71,6 +75,11 @@ i2c_acpi_match_device(const struct acpi_device_id *matches,
{
return NULL;
}
+
+static inline int i2c_acpi_get_irq(struct acpi_device *adev)
+{
+ return 0;
+}
#endif /* CONFIG_ACPI */
extern struct notifier_block i2c_acpi_notifier;
--
2.11.0
