From: Matthew Gerlach <matthew.gerlach@xxxxxxxxx>
Add debugfs interface and documentation for setting the maximum
time in microseconds for the FPGA to go to the operating
state after the region has been programmed.
Signed-off-by: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx>
---
Documentation/fpga/debugfs.txt | 6 ++++++
drivers/fpga/fpga-mgr-debugfs.c | 5 +++++
2 files changed, 11 insertions(+)
diff --git a/Documentation/fpga/debugfs.txt b/Documentation/fpga/debugfs.txt
index 1b34d5460d5d..b01950f76e20 100644
--- a/Documentation/fpga/debugfs.txt
+++ b/Documentation/fpga/debugfs.txt
@@ -9,6 +9,12 @@ three files:
$ echo 1 > /sys/kernel/debug/fpga_manager/fpga0/flags
+ - [RW] config_complete_timeout_us: time out in microseconds to wait for
+ FPGA to go to operating state after
+ region has been programmed.
+
+ $ echo 4 > /sys/kernel/debug/fpga_manager/fpga0/config_complete_timeout_us
+
- [RW] firmware_name: Name of an FPGA image firmware file. Writing initiates
a complete FPGA programming cycle. Note that the image
file must be in a directory on the firmware search path
diff --git a/drivers/fpga/fpga-mgr-debugfs.c b/drivers/fpga/fpga-mgr-debugfs.c
index 30af59b92bf3..83b712d4eb14 100644
--- a/drivers/fpga/fpga-mgr-debugfs.c
+++ b/drivers/fpga/fpga-mgr-debugfs.c
@@ -153,8 +153,13 @@ void fpga_mgr_debugfs_add(struct fpga_manager *mgr)
&fpga_mgr_image_fops);
info = &debugfs->info;
+
debugfs_create_u32("flags", 0600, debugfs->debugfs_dir, &info->flags);
+ debugfs_create_u32("config_complete_timeout_us", 0600,
+ debugfs->debugfs_dir,
+ &info->config_complete_timeout_us);
+
mgr->debugfs = debugfs;
}
--
2.26.2
