From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: <wsa@the-dreams.de>, <mika.westerberg@linux.intel.com>
Cc: <jarkko.nikula@linux.intel.com>,
<andriy.shevchenko@linux.intel.com>, <linux-i2c@vger.kernel.org>,
<linux-acpi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<benjamin.tissoires@redhat.com>, <jbroadus@gmail.com>,
<patches@opensource.cirrus.com>
Subject: [PATCH v8 2/6] i2c: acpi: Use available IRQ helper functions
Date: Thu, 27 Jun 2019 10:24:07 +0100 [thread overview]
Message-ID: <20190627092411.26123-3-ckeepax@opensource.cirrus.com> (raw)
In-Reply-To: <20190627092411.26123-1-ckeepax@opensource.cirrus.com>
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>
---
Changes since v7:
- Leave call to acpi_dev_free_resource_list
Thanks,
Charles
drivers/i2c/i2c-core-acpi.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index f1d648962b223..1820f18a4e5f9 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -133,13 +133,23 @@ 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;
@@ -172,17 +182,11 @@ 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,
--
2.11.0
next prev parent reply other threads:[~2019-06-27 9:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-27 9:24 [PATCH v8 0/6] I2C IRQ Probe Improvements Charles Keepax
2019-06-27 9:24 ` [PATCH v8 1/6] i2c: core: Allow whole core to use i2c_dev_irq_from_resources Charles Keepax
2019-06-27 9:24 ` Charles Keepax [this message]
2019-06-27 11:26 ` [PATCH v8 2/6] i2c: acpi: Use available IRQ helper functions Mika Westerberg
2019-06-27 9:24 ` [PATCH v8 3/6] i2c: acpi: Factor out getting the IRQ from ACPI Charles Keepax
2019-06-27 11:27 ` Mika Westerberg
2019-06-27 9:24 ` [PATCH v8 4/6] i2c: core: Move ACPI IRQ handling to probe time Charles Keepax
2019-06-27 11:29 ` Mika Westerberg
2019-06-27 9:24 ` [PATCH v8 5/6] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq Charles Keepax
2019-06-27 11:30 ` Mika Westerberg
2019-06-27 9:24 ` [PATCH v8 6/6] i2c: core: Tidy up handling of init_irq Charles Keepax
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