[PATCH v2] event: Add fpga load event

[christian.taedcke-oss at weidmueller.com]

From: Christian Taedcke <christian.taedcke at weidmueller.com>

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

Signed-off-by: Christian Taedcke <christian.taedcke at weidmueller.com>
---

Changes in v2:
- replace __weak function with a new event

 drivers/fpga/fpga.c | 18 ++++++++++++++++++
 include/event.h     | 16 ++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/fpga/fpga.c b/drivers/fpga/fpga.c
index 7f6b6bc73a..7b00bf4d55 100644
--- a/drivers/fpga/fpga.c
+++ b/drivers/fpga/fpga.c
@@ -244,6 +244,22 @@ int fpga_loads(int devnum, const void *buf, size_t size,
 }
 #endif
 
+static void fpga_load_event_notify(const void *buf, size_t bsize, int result)
+{
+#if CONFIG_IS_ENABLED(EVENT)
+	int ret;
+	struct event_fpga_load load = {
+		.buf = buf,
+		.bsize = bsize,
+		.result = result
+	};
+
+	ret = event_notify(EVT_FPGA_LOAD, &load, sizeof(load));
+	if (ret)
+		printf("%s: fpga load event failed: %d\n", __func__, ret);
+#endif
+}
+
 /*
  * Generic multiplexing code
  */
@@ -284,6 +300,8 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype,
 		}
 	}
 
+	fpga_load_event_notify(buf, bsize, ret_val);
+
 	return ret_val;
 }
 
diff --git a/include/event.h b/include/event.h
index fe41080fa6..77124c2e73 100644
--- a/include/event.h
+++ b/include/event.h
@@ -31,6 +31,9 @@ enum event_t {
 	/* Init hooks */
 	EVT_MISC_INIT_F,
 
+	/* Fpga load hook */
+	EVT_FPGA_LOAD,
+
 	/* Device tree fixups before booting */
 	EVT_FT_FIXUP,
 
@@ -59,6 +62,19 @@ union event_data {
 		struct udevice *dev;
 	} dm;
 
+	/**
+	 * struct event_fpga_load - fpga load event
+	 *
+	 * @buf: The buffer that was loaded into the fpga
+	 * @bsize: The size of the buffer that was loaded into the fpga
+	 * @result: Result of the load operation
+	 */
+	struct event_fpga_load {
+		const void *buf;
+		size_t bsize;
+		int result;
+	} fpga_load;
+
 	/**
 	 * struct event_ft_fixup - FDT fixup before booting
 	 *
-- 
2.34.1