Pass only information required for sub-device matching to functions
checking whether the async sub-device already exists. Do the same for
debug message printing. This makes further changes to other aspects of
async sub-devices easier.
Accordingly, also perform further renames:
asd_equal as v4l2_async_match_equal,
v4l2_async_nf_has_async_subdev as v4l2_async_nf_has_async_match,
__v4l2_async_nf_has_async_subdev as
v4l2_async_nf_has_async_subdev_entry and
v4l2_async_nf_asd_valid as v4l2_async_nf_match_valid.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Tested-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> # imx6qp
Tested_by: Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx> # rcar + adv746x
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Tested-by: Aishwarya Kothari <aishwarya.kothari@xxxxxxxxxxx> # Apalis i.MX6Q with TC358743
---
drivers/media/v4l2-core/v4l2-async.c | 109 ++++++++++++++-------------
1 file changed, 56 insertions(+), 53 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 2c040bc50e6b5..465eb072e7c59 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -64,14 +64,15 @@ static void v4l2_async_nf_call_destroy(struct v4l2_async_notifier *n,
}
static bool match_i2c(struct v4l2_async_notifier *notifier,
- struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
+ struct v4l2_subdev *sd,
+ struct v4l2_async_match_desc *match)
{
#if IS_ENABLED(CONFIG_I2C)
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;
+ match->i2c.adapter_id == client->adapter->nr &&
+ match->i2c.address == client->addr;
#else
return false;
#endif
@@ -91,7 +92,7 @@ static struct device *notifier_dev(struct v4l2_async_notifier *notifier)
static bool
match_fwnode_one(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *sd, struct fwnode_handle *sd_fwnode,
- struct v4l2_async_subdev *asd)
+ struct v4l2_async_match_desc *match)
{
struct fwnode_handle *other_fwnode;
struct fwnode_handle *dev_fwnode;
@@ -101,14 +102,14 @@ match_fwnode_one(struct v4l2_async_notifier *notifier,
dev_dbg(notifier_dev(notifier),
"v4l2-async: fwnode match: need %pfw, trying %pfw\n",
- sd_fwnode, asd->match.fwnode);
+ sd_fwnode, match->fwnode);
/*
* Both the subdev and the async subdev can provide either an endpoint
* fwnode or a device fwnode. Start with the simple case of direct
* fwnode matching.
*/
- if (sd_fwnode == asd->match.fwnode) {
+ if (sd_fwnode == match->fwnode) {
dev_dbg(notifier_dev(notifier),
"v4l2-async: direct match found\n");
return true;
@@ -123,7 +124,7 @@ match_fwnode_one(struct v4l2_async_notifier *notifier,
* match unconnected endpoints.
*/
sd_fwnode_is_ep = fwnode_graph_is_endpoint(sd_fwnode);
- asd_fwnode_is_ep = fwnode_graph_is_endpoint(asd->match.fwnode);
+ asd_fwnode_is_ep = fwnode_graph_is_endpoint(match->fwnode);
if (sd_fwnode_is_ep == asd_fwnode_is_ep) {
dev_dbg(notifier_dev(notifier),
@@ -137,9 +138,9 @@ match_fwnode_one(struct v4l2_async_notifier *notifier,
*/
if (sd_fwnode_is_ep) {
dev_fwnode = fwnode_graph_get_port_parent(sd_fwnode);
- other_fwnode = asd->match.fwnode;
+ other_fwnode = match->fwnode;
} else {
- dev_fwnode = fwnode_graph_get_port_parent(asd->match.fwnode);
+ dev_fwnode = fwnode_graph_get_port_parent(match->fwnode);
other_fwnode = sd_fwnode;
}
@@ -179,13 +180,14 @@ match_fwnode_one(struct v4l2_async_notifier *notifier,
}
static bool match_fwnode(struct v4l2_async_notifier *notifier,
- struct v4l2_subdev *sd, struct v4l2_async_subdev *asd)
+ struct v4l2_subdev *sd,
+ struct v4l2_async_match_desc *match)
{
dev_dbg(notifier_dev(notifier),
"v4l2-async: matching for notifier %pfw, sd fwnode %pfw\n",
dev_fwnode(notifier_dev(notifier)), sd->fwnode);
- if (match_fwnode_one(notifier, sd, sd->fwnode, asd))
+ if (match_fwnode_one(notifier, sd, sd->fwnode, match))
return true;
/* Also check the secondary fwnode. */
@@ -195,7 +197,7 @@ static bool match_fwnode(struct v4l2_async_notifier *notifier,
dev_dbg(notifier_dev(notifier),
"v4l2-async: trying secondary fwnode match\n");
- return match_fwnode_one(notifier, sd, sd->fwnode->secondary, asd);
+ return match_fwnode_one(notifier, sd, sd->fwnode->secondary, match);
}
static LIST_HEAD(subdev_list);
@@ -207,7 +209,8 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *sd)
{
bool (*match)(struct v4l2_async_notifier *notifier,
- struct v4l2_subdev *sd, struct v4l2_async_subdev *asd);
+ struct v4l2_subdev *sd,
+ struct v4l2_async_match_desc *match);
struct v4l2_async_subdev *asd;
list_for_each_entry(asd, ¬ifier->waiting, list) {
@@ -226,28 +229,26 @@ v4l2_async_find_match(struct v4l2_async_notifier *notifier,
}
/* match cannot be NULL here */
- if (match(notifier, sd, asd))
+ if (match(notifier, sd, &asd->match))
return asd;
}
return NULL;
}
-/* Compare two async sub-device descriptors for equivalence */
-static bool asd_equal(struct v4l2_async_subdev *asd_x,
- struct v4l2_async_subdev *asd_y)
+/* Compare two async match descriptors for equivalence */
+static bool v4l2_async_match_equal(struct v4l2_async_match_desc *match1,
+ struct v4l2_async_match_desc *match2)
{
- if (asd_x->match.type != asd_y->match.type)
+ if (match1->type != match2->type)
return false;
- switch (asd_x->match.type) {
+ switch (match1->type) {
case V4L2_ASYNC_MATCH_TYPE_I2C:
- return asd_x->match.i2c.adapter_id ==
- asd_y->match.i2c.adapter_id &&
- asd_x->match.i2c.address ==
- asd_y->match.i2c.address;
+ return match1->i2c.adapter_id == match2->i2c.adapter_id &&
+ match1->i2c.address == match2->i2c.address;
case V4L2_ASYNC_MATCH_TYPE_FWNODE:
- return asd_x->match.fwnode == asd_y->match.fwnode;
+ return match1->fwnode == match2->fwnode;
default:
break;
}
@@ -497,21 +498,21 @@ v4l2_async_nf_unbind_all_subdevs(struct v4l2_async_notifier *notifier,
/* See if an async sub-device can be found in a notifier's lists. */
static bool
-__v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier,
- struct v4l2_async_subdev *asd)
+v4l2_async_nf_has_async_match_entry(struct v4l2_async_notifier *notifier,
+ struct v4l2_async_match_desc *match)
{
- struct v4l2_async_subdev *asd_y;
+ struct v4l2_async_subdev *asd;
struct v4l2_subdev *sd;
- list_for_each_entry(asd_y, ¬ifier->waiting, list)
- if (asd_equal(asd, asd_y))
+ list_for_each_entry(asd, ¬ifier->waiting, list)
+ if (v4l2_async_match_equal(&asd->match, match))
return true;
list_for_each_entry(sd, ¬ifier->done, async_list) {
if (WARN_ON(!sd->asd))
continue;
- if (asd_equal(asd, sd->asd))
+ if (v4l2_async_match_equal(&sd->asd->match, match))
return true;
}
@@ -525,46 +526,48 @@ __v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier,
* the notifier.
*/
static bool
-v4l2_async_nf_has_async_subdev(struct v4l2_async_notifier *notifier,
- struct v4l2_async_subdev *asd, bool skip_self)
+v4l2_async_nf_has_async_match(struct v4l2_async_notifier *notifier,
+ struct v4l2_async_match_desc *match,
+ bool skip_self)
{
- struct v4l2_async_subdev *asd_y;
+ struct v4l2_async_subdev *asd;
lockdep_assert_held(&list_lock);
/* Check that an asd is not being added more than once. */
- list_for_each_entry(asd_y, ¬ifier->asd_list, asd_list) {
- if (skip_self && asd == asd_y)
+ list_for_each_entry(asd, ¬ifier->asd_list, asd_list) {
+ if (skip_self && &asd->match == match)
continue;
- if (asd_equal(asd, asd_y))
+ if (v4l2_async_match_equal(&asd->match, match))
return true;
}
/* Check that an asd does not exist in other notifiers. */
list_for_each_entry(notifier, ¬ifier_list, list)
- if (__v4l2_async_nf_has_async_subdev(notifier, asd))
+ if (v4l2_async_nf_has_async_match_entry(notifier, match))
return true;
return false;
}
-static int v4l2_async_nf_asd_valid(struct v4l2_async_notifier *notifier,
- struct v4l2_async_subdev *asd,
- bool skip_self)
+static int v4l2_async_nf_match_valid(struct v4l2_async_notifier *notifier,
+ struct v4l2_async_match_desc *match,
+ bool skip_self)
{
struct device *dev = notifier_dev(notifier);
- switch (asd->match.type) {
+ switch (match->type) {
case V4L2_ASYNC_MATCH_TYPE_I2C:
case V4L2_ASYNC_MATCH_TYPE_FWNODE:
- if (v4l2_async_nf_has_async_subdev(notifier, asd, skip_self)) {
- dev_dbg(dev, "v4l2-async: subdev descriptor already listed in a notifier\n");
+ if (v4l2_async_nf_has_async_match(notifier, match,
+ skip_self)) {
+ dev_dbg(dev, "v4l2-async: match descriptor already listed in a notifier\n");
return -EEXIST;
}
break;
default:
dev_err(dev, "v4l2-async: Invalid match type %u on %p\n",
- asd->match.type, asd);
+ match->type, match);
return -EINVAL;
}
@@ -588,7 +591,7 @@ static int __v4l2_async_nf_register(struct v4l2_async_notifier *notifier)
mutex_lock(&list_lock);
list_for_each_entry(asd, ¬ifier->asd_list, asd_list) {
- ret = v4l2_async_nf_asd_valid(notifier, asd, true);
+ ret = v4l2_async_nf_match_valid(notifier, &asd->match, true);
if (ret)
goto err_unlock;
@@ -722,7 +725,7 @@ static int __v4l2_async_nf_add_subdev(struct v4l2_async_notifier *notifier,
mutex_lock(&list_lock);
- ret = v4l2_async_nf_asd_valid(notifier, asd, false);
+ ret = v4l2_async_nf_match_valid(notifier, &asd->match, false);
if (ret)
goto unlock;
@@ -902,16 +905,16 @@ void v4l2_async_unregister_subdev(struct v4l2_subdev *sd)
}
EXPORT_SYMBOL(v4l2_async_unregister_subdev);
-static void print_waiting_subdev(struct seq_file *s,
- struct v4l2_async_subdev *asd)
+static void print_waiting_match(struct seq_file *s,
+ struct v4l2_async_match_desc *match)
{
- switch (asd->match.type) {
+ switch (match->type) {
case V4L2_ASYNC_MATCH_TYPE_I2C:
- seq_printf(s, " [i2c] dev=%d-%04x\n", asd->match.i2c.adapter_id,
- asd->match.i2c.address);
+ seq_printf(s, " [i2c] dev=%d-%04x\n", match->i2c.adapter_id,
+ match->i2c.address);
break;
case V4L2_ASYNC_MATCH_TYPE_FWNODE: {
- struct fwnode_handle *devnode, *fwnode = asd->match.fwnode;
+ struct fwnode_handle *devnode, *fwnode = match->fwnode;
devnode = fwnode_graph_is_endpoint(fwnode) ?
fwnode_graph_get_port_parent(fwnode) :
@@ -948,7 +951,7 @@ static int pending_subdevs_show(struct seq_file *s, void *data)
list_for_each_entry(notif, ¬ifier_list, list) {
seq_printf(s, "%s:\n", v4l2_async_nf_name(notif));
list_for_each_entry(asd, ¬if->waiting, list)
- print_waiting_subdev(s, asd);
+ print_waiting_match(s, &asd->match);
}
mutex_unlock(&list_lock);
--
2.39.2
