[PATCH v5 11/28] fpga: dfl: add dfl_fpga_check_port_id function.
From: Wu Hao <hidden>
Date: 2018-05-02 03:07:12
Also in:
linux-fpga, lkml
Subsystem:
fpga dfl drivers, fpga manager framework, the rest · Maintainers:
Xu Yilun, Moritz Fischer, Linus Torvalds
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 <redacted> --- drivers/fpga/dfl.c | 22 ++++++++++++++++++++++ drivers/fpga/dfl.h | 1 + 2 files changed, 23 insertions(+)
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index b5a14a4..d47613c 100644
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c@@ -81,6 +81,28 @@ void dfl_fpga_del_port_ops(struct dfl_fpga_port_ops *ops) } EXPORT_SYMBOL_GPL(dfl_fpga_del_port_ops); +/** + * 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_get_port_ops(pdev); + int port_id; + + if (!port_ops || !port_ops->get_id) + return 0; + + port_id = port_ops->get_id(pdev); + dfl_fpga_put_port_ops(port_ops); + + return port_id == *(int *)pport_id; +} +EXPORT_SYMBOL_GPL(dfl_fpga_check_port_id); + static DEFINE_MUTEX(dfl_id_mutex); enum dfl_id_type {
diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index c9d9a01..b0d9b2f 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h@@ -151,6 +151,7 @@ struct dfl_fpga_port_ops { void dfl_fpga_del_port_ops(struct dfl_fpga_port_ops *ops); struct dfl_fpga_port_ops *dfl_fpga_get_port_ops(struct platform_device *pdev); void dfl_fpga_put_port_ops(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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1.8.3.1