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| author |   Wu Hao <hao.wu@intel.com> | 2018-06-30 08:53:18 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-15 13:55:45 +0200 |
| commit | d06b004b99c960828523e581a3b7d109dfc1329b (patch) | |
| tree | 8d71c06019550d35982d92b25f032a1f7ca57ffe /drivers/fpga | |
| parent | fpga: dfl: add dfl_fpga_port_ops support. (diff) | |
| download | wireguard-linux-d06b004b99c960828523e581a3b7d109dfc1329b.tar.xz wireguard-linux-d06b004b99c960828523e581a3b7d109dfc1329b.zip | |
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.c | 22 | ||||
| -rw-r--r-- | drivers/fpga/dfl.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c index 421668ab613e..a9b521bccb06 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 654e0f694a5f..a8b869e9e5b7 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 |