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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 v2 2/6] i2c: acpi: Use available IRQ helper functions
Date: Mon, 27 May 2019 16:19:28 +0100	[thread overview]
Message-ID: <20190527151932.14310-2-ckeepax@opensource.cirrus.com> (raw)
In-Reply-To: <20190527151932.14310-1-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.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---

Changes since v1:
 - Moved earlier in the patch series.

 drivers/i2c/i2c-core-acpi.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 2728006920888..4b0387d040698 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -137,14 +137,25 @@ 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 irq = -ENOENT;
 	int ret;
 
 	memset(&lookup, 0, sizeof(lookup));
@@ -176,16 +187,13 @@ 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, &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;
-		}
-	}
+	if (irq >= 0)
+		info->irq = irq;
 
 	acpi_dev_free_resource_list(&resource_list);
 
-- 
2.11.0


WARNING: multiple messages have this Message-ID (diff)
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 v2 2/6] i2c: acpi: Use available IRQ helper functions
Date: Mon, 27 May 2019 16:19:28 +0100	[thread overview]
Message-ID: <20190527151932.14310-2-ckeepax@opensource.cirrus.com> (raw)
In-Reply-To: <20190527151932.14310-1-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.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---

Changes since v1:
 - Moved earlier in the patch series.

 drivers/i2c/i2c-core-acpi.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 2728006920888..4b0387d040698 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -137,14 +137,25 @@ 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 irq = -ENOENT;
 	int ret;
 
 	memset(&lookup, 0, sizeof(lookup));
@@ -176,16 +187,13 @@ 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, &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;
-		}
-	}
+	if (irq >= 0)
+		info->irq = irq;
 
 	acpi_dev_free_resource_list(&resource_list);
 
-- 
2.11.0

  reply	other threads:[~2019-05-27 15:20 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-27 15:19 [PATCH v2 1/6] i2c: core: Allow whole core to use i2c_dev_irq_from_resources Charles Keepax
2019-05-27 15:19 ` Charles Keepax
2019-05-27 15:19 ` Charles Keepax [this message]
2019-05-27 15:19   ` [PATCH v2 2/6] i2c: acpi: Use available IRQ helper functions Charles Keepax
2019-05-28 10:30   ` Mika Westerberg
2019-05-28 11:13     ` Charles Keepax
2019-05-28 11:13       ` Charles Keepax
2019-05-27 15:19 ` [PATCH v2 3/6] i2c: acpi: Factor out getting the IRQ from ACPI Charles Keepax
2019-05-27 15:19   ` Charles Keepax
2019-05-28  8:37   ` Charles Keepax
2019-05-28  8:37     ` Charles Keepax
2019-05-28 10:35   ` Mika Westerberg
2019-05-27 15:19 ` [PATCH v2 4/6] i2c: core: Move ACPI IRQ handling to probe time Charles Keepax
2019-05-27 15:19   ` Charles Keepax
2019-05-27 15:19 ` [PATCH v2 5/6] i2c: core: Move ACPI gpio IRQ handling into i2c_acpi_get_irq Charles Keepax
2019-05-27 15:19   ` Charles Keepax
2019-05-27 15:19 ` [PATCH v2 6/6] i2c: core: Tidy up handling of init_irq Charles Keepax
2019-05-27 15:19   ` Charles Keepax

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