Re: [PATCH v1.3 1/5] v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
On Thu, Jun 11, 2015 at 11:41 PM, Sakari Ailus sakari.ai...@iki.fi wrote: On Thu, Jun 11, 2015 at 10:27:30PM +0300, Laurent Pinchart wrote: Hi Sakari, Thank you for the patch. On Thursday 11 June 2015 22:18:01 Sakari Ailus wrote: V4L2 async sub-devices are currently matched (OF case) based on the struct device_node pointer in struct device. LED devices may have more than one LED, and in that case the OF node to match is not directly the device's node, but a LED's node. Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com Bryan, could you apply the patch to your tree? It's required by Jacek's patchset you attempted to apply a few days back. Thanks! Sure, I will merge that through my tree. Thanks, -Bryan -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v1.3 1/5] v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
On Thu, Jun 11, 2015 at 10:27:30PM +0300, Laurent Pinchart wrote: Hi Sakari, Thank you for the patch. On Thursday 11 June 2015 22:18:01 Sakari Ailus wrote: V4L2 async sub-devices are currently matched (OF case) based on the struct device_node pointer in struct device. LED devices may have more than one LED, and in that case the OF node to match is not directly the device's node, but a LED's node. Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com Signed-off-by: Sakari Ailus sakari.ai...@iki.fi Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com Bryan, could you apply the patch to your tree? It's required by Jacek's patchset you attempted to apply a few days back. Thanks! -- Kind regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v1.3 1/5] v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
V4L2 async sub-devices are currently matched (OF case) based on the struct
device_node pointer in struct device. LED devices may have more than one
LED, and in that case the OF node to match is not directly the device's
node, but a LED's node.
Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com
Signed-off-by: Sakari Ailus sakari.ai...@iki.fi
---
since v1.2:
- A - The in the of_node field comment in struct v4l2_subdev.
- A better reason for not taking a reference to the of_node is that a
reference is already there for struct device, pointed to by the dev field
of struct v4l2_subdev. The async sub-device never exists without a device.
drivers/media/v4l2-core/v4l2-async.c | 39 +---
include/media/v4l2-subdev.h | 2 ++
2 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c
b/drivers/media/v4l2-core/v4l2-async.c
index 85a6a34..5bada20 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -22,10 +22,10 @@
#include media/v4l2-device.h
#include media/v4l2-subdev.h
-static bool match_i2c(struct device *dev, struct v4l2_async_subdev *asd)
+static bool match_i2c(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
{
#if IS_ENABLED(CONFIG_I2C)
- struct i2c_client *client = i2c_verify_client(dev);
+ struct i2c_client *client = i2c_verify_client(sd-dev);
return client
asd-match.i2c.adapter_id == client-adapter-nr
asd-match.i2c.address == client-addr;
@@ -34,14 +34,24 @@ static bool match_i2c(struct device *dev, struct
v4l2_async_subdev *asd)
#endif
}
-static bool match_devname(struct device *dev, struct v4l2_async_subdev *asd)
+static bool match_devname(struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
{
- return !strcmp(asd-match.device_name.name, dev_name(dev));
+ return !strcmp(asd-match.device_name.name, dev_name(sd-dev));
}
-static bool match_of(struct device *dev, struct v4l2_async_subdev *asd)
+static bool match_of(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
{
- return dev-of_node == asd-match.of.node;
+ return sd-of_node == asd-match.of.node;
+}
+
+static bool match_custom(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
+{
+ if (!asd-match.custom.match)
+ /* Match always */
+ return true;
+
+ return asd-match.custom.match(sd-dev, asd);
}
static LIST_HEAD(subdev_list);
@@ -51,17 +61,14 @@ static DEFINE_MUTEX(list_lock);
static struct v4l2_async_subdev *v4l2_async_belongs(struct v4l2_async_notifier
*notifier,
struct v4l2_subdev *sd)
{
+ bool (*match)(struct v4l2_subdev *, struct v4l2_async_subdev *);
struct v4l2_async_subdev *asd;
- bool (*match)(struct device *, struct v4l2_async_subdev *);
list_for_each_entry(asd, notifier-waiting, list) {
/* bus_type has been verified valid before */
switch (asd-match_type) {
case V4L2_ASYNC_MATCH_CUSTOM:
- match = asd-match.custom.match;
- if (!match)
- /* Match always */
- return asd;
+ match = match_custom;
break;
case V4L2_ASYNC_MATCH_DEVNAME:
match = match_devname;
@@ -79,7 +86,7 @@ static struct v4l2_async_subdev *v4l2_async_belongs(struct
v4l2_async_notifier *
}
/* match cannot be NULL here */
- if (match(sd-dev, asd))
+ if (match(sd, asd))
return asd;
}
@@ -266,6 +273,14 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
{
struct v4l2_async_notifier *notifier;
+ /*
+* No reference taken. The reference is held by the device
+* (struct v4l2_subdev.dev), and async sub-device does not
+* exist independently of the device at any point of time.
+*/
+ if (!sd-of_node sd-dev)
+ sd-of_node = sd-dev-of_node;
+
mutex_lock(list_lock);
INIT_LIST_HEAD(sd-async_list);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 8f5da73..cdd534b 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -603,6 +603,8 @@ struct v4l2_subdev {
struct video_device *devnode;
/* pointer to the physical device, if any */
struct device *dev;
+ /* The device_node of the subdev, usually the same as dev-of_node. */
+ struct device_node *of_node;
/* Links this subdev to a global subdev_list or @notifier-done list. */
struct list_head async_list;
/* Pointer to respective struct v4l2_async_subdev. */
--
2.1.4
--
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Re: [PATCH v1.3 1/5] v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
Hi Sakari,
Thank you for the patch.
On Thursday 11 June 2015 22:18:01 Sakari Ailus wrote:
V4L2 async sub-devices are currently matched (OF case) based on the struct
device_node pointer in struct device. LED devices may have more than one
LED, and in that case the OF node to match is not directly the device's
node, but a LED's node.
Signed-off-by: Laurent Pinchart laurent.pinch...@ideasonboard.com
Signed-off-by: Sakari Ailus sakari.ai...@iki.fi
Acked-by: Laurent Pinchart laurent.pinch...@ideasonboard.com
---
since v1.2:
- A - The in the of_node field comment in struct v4l2_subdev.
- A better reason for not taking a reference to the of_node is that a
reference is already there for struct device, pointed to by the dev field
of struct v4l2_subdev. The async sub-device never exists without a device.
drivers/media/v4l2-core/v4l2-async.c | 39 ++---
include/media/v4l2-subdev.h | 2 ++
2 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c
b/drivers/media/v4l2-core/v4l2-async.c index 85a6a34..5bada20 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -22,10 +22,10 @@
#include media/v4l2-device.h
#include media/v4l2-subdev.h
-static bool match_i2c(struct device *dev, struct v4l2_async_subdev *asd)
+static bool match_i2c(struct v4l2_subdev *sd, struct v4l2_async_subdev
*asd) {
#if IS_ENABLED(CONFIG_I2C)
- struct i2c_client *client = i2c_verify_client(dev);
+ struct i2c_client *client = i2c_verify_client(sd-dev);
return client
asd-match.i2c.adapter_id == client-adapter-nr
asd-match.i2c.address == client-addr;
@@ -34,14 +34,24 @@ static bool match_i2c(struct device *dev, struct
v4l2_async_subdev *asd) #endif
}
-static bool match_devname(struct device *dev, struct v4l2_async_subdev
*asd) +static bool match_devname(struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
{
- return !strcmp(asd-match.device_name.name, dev_name(dev));
+ return !strcmp(asd-match.device_name.name, dev_name(sd-dev));
}
-static bool match_of(struct device *dev, struct v4l2_async_subdev *asd)
+static bool match_of(struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
{
- return dev-of_node == asd-match.of.node;
+ return sd-of_node == asd-match.of.node;
+}
+
+static bool match_custom(struct v4l2_subdev *sd, struct v4l2_async_subdev
*asd) +{
+ if (!asd-match.custom.match)
+ /* Match always */
+ return true;
+
+ return asd-match.custom.match(sd-dev, asd);
}
static LIST_HEAD(subdev_list);
@@ -51,17 +61,14 @@ static DEFINE_MUTEX(list_lock);
static struct v4l2_async_subdev *v4l2_async_belongs(struct
v4l2_async_notifier *notifier, struct v4l2_subdev *sd)
{
+ bool (*match)(struct v4l2_subdev *, struct v4l2_async_subdev *);
struct v4l2_async_subdev *asd;
- bool (*match)(struct device *, struct v4l2_async_subdev *);
list_for_each_entry(asd, notifier-waiting, list) {
/* bus_type has been verified valid before */
switch (asd-match_type) {
case V4L2_ASYNC_MATCH_CUSTOM:
- match = asd-match.custom.match;
- if (!match)
- /* Match always */
- return asd;
+ match = match_custom;
break;
case V4L2_ASYNC_MATCH_DEVNAME:
match = match_devname;
@@ -79,7 +86,7 @@ static struct v4l2_async_subdev *v4l2_async_belongs(struct
v4l2_async_notifier * }
/* match cannot be NULL here */
- if (match(sd-dev, asd))
+ if (match(sd, asd))
return asd;
}
@@ -266,6 +273,14 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
{
struct v4l2_async_notifier *notifier;
+ /*
+ * No reference taken. The reference is held by the device
+ * (struct v4l2_subdev.dev), and async sub-device does not
+ * exist independently of the device at any point of time.
+ */
+ if (!sd-of_node sd-dev)
+ sd-of_node = sd-dev-of_node;
+
mutex_lock(list_lock);
INIT_LIST_HEAD(sd-async_list);
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 8f5da73..cdd534b 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -603,6 +603,8 @@ struct v4l2_subdev {
struct video_device *devnode;
/* pointer to the physical device, if any */
struct device *dev;
+ /* The device_node of the subdev, usually the same as dev-of_node. */
+ struct device_node *of_node;
/* Links this subdev to a global subdev_list or @notifier-done list. */
struct list_head async_list;
/* Pointer to respective
