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i2c: acpi: Use available IRQ helper functions 

Use the available IRQ helper functions, most of the functions have
additional helpful side affects like configuring the trigger type of the
IRQ.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Charles Keepax 2019-06-27 10:24:07 +01:00 committed by Wolfram Sang
parent 1d7534b6ad
commit c2223ddcfe
1 changed files with 13 additions and 9 deletions
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22
drivers/i2c/i2c-core-acpi.c
View File

@ -137,13 +137,23 @@ static int i2c_acpi_do_lookup(struct acpi_device *adev,
return 0;
}
static int i2c_acpi_add_resource(struct acpi_resource *ares, void *data)
{
int *irq = data;
struct resource r;
if (*irq <= 0 && acpi_dev_resource_interrupt(ares, 0, &r))
*irq = i2c_dev_irq_from_resources(&r, 1);
return 1; /* No need to add resource to the list */
}
static int i2c_acpi_get_info(struct acpi_device *adev,
struct i2c_board_info *info,
struct i2c_adapter *adapter,
acpi_handle *adapter_handle)
{
struct list_head resource_list;
struct resource_entry *entry;
struct i2c_acpi_lookup lookup;
int ret;
@ -176,17 +186,11 @@ static int i2c_acpi_get_info(struct acpi_device *adev,
/* Then fill IRQ number if any */
INIT_LIST_HEAD(&resource_list);
ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL);
ret = acpi_dev_get_resources(adev, &resource_list,
i2c_acpi_add_resource, &info->irq);
if (ret < 0)
return -EINVAL;
resource_list_for_each_entry(entry, &resource_list) {
if (resource_type(entry->res) == IORESOURCE_IRQ) {
info->irq = entry->res->start;
break;
}
}
acpi_dev_free_resource_list(&resource_list);
acpi_set_modalias(adev, dev_name(&adev->dev), info->type,