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authorWu Hao <hao.wu@intel.com>2018-06-30 00:53:18 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-07-15 11:55:45 (GMT)
commitd06b004b99c960828523e581a3b7d109dfc1329b (patch)
tree8d71c06019550d35982d92b25f032a1f7ca57ffe /drivers/fpga
parent6e8fd6e493bfca83021cc6a8fd86d7f69bd14fc6 (diff)
fpga: dfl: add dfl_fpga_check_port_id function.
This patch adds one common function in DFL framework. It uses port_ops get_id callback to get port id and compare it with given value. This function could be used as match function of the dfl_fpga_cdev_find_port function. Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga')
-rw-r--r--drivers/fpga/dfl.c22
-rw-r--r--drivers/fpga/dfl.h1
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index 421668a..a9b521b 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -216,6 +216,28 @@ void dfl_fpga_port_ops_del(struct dfl_fpga_port_ops *ops)
EXPORT_SYMBOL_GPL(dfl_fpga_port_ops_del);
/**
+ * dfl_fpga_check_port_id - check the port id
+ * @pdev: port platform device.
+ * @pport_id: port id to compare.
+ *
+ * Return: 1 if port device matches with given port id, otherwise 0.
+ */
+int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id)
+{
+ struct dfl_fpga_port_ops *port_ops = dfl_fpga_port_ops_get(pdev);
+ int port_id;
+
+ if (!port_ops || !port_ops->get_id)
+ return 0;
+
+ port_id = port_ops->get_id(pdev);
+ dfl_fpga_port_ops_put(port_ops);
+
+ return port_id == *(int *)pport_id;
+}
+EXPORT_SYMBOL_GPL(dfl_fpga_check_port_id);
+
+/**
* dfl_fpga_dev_feature_uinit - uinit for sub features of dfl feature device
* @pdev: feature device.
*/
diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index 654e0f6..a8b869e 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h
@@ -151,6 +151,7 @@ void dfl_fpga_port_ops_add(struct dfl_fpga_port_ops *ops);
void dfl_fpga_port_ops_del(struct dfl_fpga_port_ops *ops);
struct dfl_fpga_port_ops *dfl_fpga_port_ops_get(struct platform_device *pdev);
void dfl_fpga_port_ops_put(struct dfl_fpga_port_ops *ops);
+int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id);
/**
* struct dfl_feature_driver - sub feature's driver

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