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Message-ID: <20190626150302.22703-3-ckeepax@opensource.cirrus.com>
Date: Wed, 26 Jun 2019 16:02:58 +0100
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
To: <wsa@...-dreams.de>, <mika.westerberg@...ux.intel.com>
CC: <jarkko.nikula@...ux.intel.com>,
<andriy.shevchenko@...ux.intel.com>, <linux-i2c@...r.kernel.org>,
<linux-acpi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<benjamin.tissoires@...hat.com>, <jbroadus@...il.com>,
<patches@...nsource.cirrus.com>
Subject: [PATCH v7 2/6] 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.
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
No change since v6.
Thanks,
Charles
drivers/i2c/i2c-core-acpi.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index f1d648962b223..3951e352317ff 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -133,13 +133,24 @@ 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);
+
+ /* No need to add resource to the list, free list if this changes */
+ return 1;
+}
+
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;
@@ -172,19 +183,11 @@ 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,
sizeof(info->type));
--
2.11.0
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