From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, Hans de Goede <hdegoede@redhat.com>,
Felipe Balbi <felipe.balbi@linux.intel.com>,
Badhri Jagan Sridharan <badhri@google.com>,
Linus Walleij <linus.walleij@linaro.org>,
linux-usb@vger.kernel.org, Yu Chen <chenyu56@huawei.com>,
linux-kernel@vger.kernel.org, Biju Das <biju.das@bp.renesas.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
linux-mediatek@lists.infradead.org,
Min Guo <min.guo@mediatek.com>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Nagarjuna Kristam <nkristam@nvidia.com>,
Adam Thomson <Adam.Thomson.Opensource@diasemi.com>,
linux-arm-kernel@lists.infradead.org, Li Jun <jun.li@nxp.com>
Subject: [PATCH v7 06/10] device connection: Add fwnode_connection_find_match()
Date: Tue, 11 Jun 2019 16:44:36 +0800 [thread overview]
Message-ID: <1560242680-23844-7-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1560242680-23844-1-git-send-email-chunfeng.yun@mediatek.com>
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
The fwnode_connection_find_match() function is exactly the
same as device_connection_find_match(), except it takes
struct fwnode_handle as parameter instead of struct device.
That allows locating device connections before the device
entries have been created.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v7:
rebased on Rafael's tree [1] (after rc4), provided by Heikki
[1] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/log/?h=linux-next
v6:
new patch
---
drivers/base/devcon.c | 43 ++++++++++++++++++++++++++++++------------
include/linux/device.h | 10 +++++++---
2 files changed, 38 insertions(+), 15 deletions(-)
diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c
index f7035fc12b92..5bf9537bd738 100644
--- a/drivers/base/devcon.c
+++ b/drivers/base/devcon.c
@@ -12,9 +12,6 @@
static DEFINE_MUTEX(devcon_lock);
static LIST_HEAD(devcon_list);
-typedef void *(*devcon_match_fn_t)(struct device_connection *con, int ep,
- void *data);
-
static void *
fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
void *data, devcon_match_fn_t match)
@@ -60,6 +57,34 @@ fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
return NULL;
}
+/**
+ * fwnode_connection_find_match - Find connection from a device node
+ * @fwnode: Device node with the connection
+ * @con_id: Identifier for the connection
+ * @data: Data for the match function
+ * @match: Function to check and convert the connection description
+ *
+ * Find a connection with unique identifier @con_id between @fwnode and another
+ * device node. @match will be used to convert the connection description to
+ * data the caller is expecting to be returned.
+ */
+void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
+ const char *con_id, void *data,
+ devcon_match_fn_t match)
+{
+ void *ret;
+
+ if (!fwnode || !match)
+ return NULL;
+
+ ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
+ if (ret)
+ return ret;
+
+ return fwnode_devcon_match(fwnode, con_id, data, match);
+}
+EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
+
/**
* device_connection_find_match - Find physical connection to a device
* @dev: Device with the connection
@@ -83,15 +108,9 @@ void *device_connection_find_match(struct device *dev, const char *con_id,
if (!match)
return NULL;
- if (fwnode) {
- ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
- if (ret)
- return ret;
-
- ret = fwnode_devcon_match(fwnode, con_id, data, match);
- if (ret)
- return ret;
- }
+ ret = fwnode_connection_find_match(fwnode, con_id, data, match);
+ if (ret)
+ return ret;
mutex_lock(&devcon_lock);
diff --git a/include/linux/device.h b/include/linux/device.h
index 5489a759e1c5..3d3081387937 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -772,10 +772,14 @@ struct device_connection {
struct list_head list;
};
+typedef void *(*devcon_match_fn_t)(struct device_connection *con, int ep,
+ void *data);
+
+void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
+ const char *con_id, void *data,
+ devcon_match_fn_t match);
void *device_connection_find_match(struct device *dev, const char *con_id,
- void *data,
- void *(*match)(struct device_connection *con,
- int ep, void *data));
+ void *data, devcon_match_fn_t match);
struct device *device_connection_find(struct device *dev, const char *con_id);
--
2.21.0
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next prev parent reply other threads:[~2019-06-11 8:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-11 8:44 [PATCH v7 00/10] add USB Type-B GPIO connector driver Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 01/10] dt-binding: usb: add usb-role-switch property Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 02/10] dt-bindings: connector: add optional properties for Type-B Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 03/10] dt-bindings: usb: add binding for Type-B GPIO connector driver Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 04/10] dt-bindings: usb: mtu3: add properties about USB Role Switch Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 05/10] usb: roles: Introduce stubs for the exiting functions in role.h Chunfeng Yun
2019-06-11 8:44 ` Chunfeng Yun [this message]
2019-06-11 8:44 ` [PATCH v7 07/10] usb: roles: Add fwnode_usb_role_switch_get() function Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 08/10] usb: roles: get usb-role-switch from parent Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 09/10] usb: roles: add USB Type-B GPIO connector driver Chunfeng Yun
2019-06-24 9:58 ` Heikki Krogerus
2019-06-25 8:55 ` Chunfeng Yun
2019-06-11 8:44 ` [PATCH v7 10/10] usb: mtu3: register a USB Role Switch for dual role mode Chunfeng Yun
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