From d06b004b99c960828523e581a3b7d109dfc1329b Mon Sep 17 00:00:00 2001 From: Wu Hao Date: Sat, 30 Jun 2018 08:53:18 +0800 Subject: 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 Acked-by: Alan Tull Signed-off-by: Greg Kroah-Hartman --- drivers/fpga/dfl.c | 22 ++++++++++++++++++++++ drivers/fpga/dfl.h | 1 + 2 files changed, 23 insertions(+) (limited to 'drivers/fpga') 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 @@ -215,6 +215,28 @@ 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 -- cgit v1.2.3-59-g8ed1b