event: Add fpga load event

This enables implementing custom logic after a bitstream was loaded
into the fpga.

Signed-off-by: Christian Taedcke <christian.taedcke@weidmueller.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Link: https://lore.kernel.org/r/20230720072724.11516-1-christian.taedcke-oss@weidmueller.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/fpga/fpga.c b/drivers/fpga/fpga.c
index 7f6b6bc73a..81e6d8ffc0 100644
--- a/drivers/fpga/fpga.c
+++ b/drivers/fpga/fpga.c
@@ -244,6 +244,21 @@ int fpga_loads(int devnum, const void *buf, size_t size,
 }
 #endif
 
+static int fpga_load_event_notify(const void *buf, size_t bsize, int result)
+{
+	if (CONFIG_IS_ENABLED(EVENT)) {
+		struct event_fpga_load load = {
+			.buf = buf,
+			.bsize = bsize,
+			.result = result
+		};
+
+		return event_notify(EVT_FPGA_LOAD, &load, sizeof(load));
+	}
+
+	return 0;
+}
+
 /*
  * Generic multiplexing code
  */
@@ -251,6 +266,7 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype,
 	      int flags)
 {
 	int ret_val = FPGA_FAIL;           /* assume failure */
+	int ret_notify;
 	const fpga_desc *desc = fpga_validate(devnum, buf, bsize,
 					      (char *)__func__);
 
@@ -284,6 +300,10 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype,
 		}
 	}
 
+	ret_notify = fpga_load_event_notify(buf, bsize, ret_val);
+	if (ret_notify)
+		return ret_notify;
+
 	return ret_val;
 }