Prepare v2023.10

[platform/kernel/u-boot.git] / include / event.h

diff --git a/include/event.h b/include/event.h
index fe41080..f5c5d30 100644 (file)
--- a/include/event.h
+++ b/include/event.h
@@ -11,6 +11,7 @@
 #define __event_h
 
 #include <dm/ofnode_decl.h>
+#include <linux/types.h>
 
 /**
  * enum event_t - Types of events supported by U-Boot
@@ -18,25 +19,114 @@
  * @EVT_DM_PRE_PROBE: Device is about to be probed
  */
 enum event_t {
-       EVT_NONE,
+       /**
+        * @EVT_NONE: This zero value is not used for events.
+        */
+       EVT_NONE = 0,
+
+       /**
+        * @EVT_TEST: This event is used in unit tests.
+        */
        EVT_TEST,
 
-       /* Events related to driver model */
+       /**
+        * @EVT_DM_POST_INIT_F:
+        * This event is triggered after pre-relocation initialization of the
+        * driver model. Its parameter is NULL.
+        * A non-zero return code from the event handler let's the boot process
+        * fail.
+        */
        EVT_DM_POST_INIT_F,
+
+       /**
+        * @EVT_DM_POST_INIT_R:
+        * This event is triggered after post-relocation initialization of the
+        * driver model. Its parameter is NULL.
+        * A non-zero return code from the event handler let's the boot process
+        * fail.
+        */
+       EVT_DM_POST_INIT_R,
+
+       /**
+        * @EVT_DM_PRE_PROBE:
+        * This event is triggered before probing a device. Its parameter is the
+        * device to be probed.
+        * A non-zero return code from the event handler lets the device not
+        * being probed.
+        */
        EVT_DM_PRE_PROBE,
+
+       /**
+        * @EVT_DM_POST_PROBE:
+        * This event is triggered after probing a device. Its parameter is the
+        * device that was probed.
+        * A non-zero return code from the event handler leaves the device in
+        * the unprobed state and therefore not usable.
+        */
        EVT_DM_POST_PROBE,
+
+       /**
+        * @EVT_DM_PRE_REMOVE:
+        * This event is triggered after removing a device. Its parameter is
+        * the device to be removed.
+        * A non-zero return code from the event handler stops the removal of
+        * the device before any changes.
+        */
        EVT_DM_PRE_REMOVE,
+
+       /**
+        * @EVT_DM_POST_REMOVE:
+        * This event is triggered before removing a device. Its parameter is
+        * the device that was removed.
+        * A non-zero return code stops from the event handler the removal of
+        * the device after all removal changes. The previous state is not
+        * restored. All children will be gone and the device may not be
+        * functional.
+        */
        EVT_DM_POST_REMOVE,
 
-       /* Init hooks */
+       /**
+        * @EVT_MISC_INIT_F:
+        * This event is triggered during the initialization sequence before
+        * relocation. Its parameter is NULL.
+        * A non-zero return code from the event handler let's the boot process
+        * fail.
+        */
        EVT_MISC_INIT_F,
 
-       /* Device tree fixups before booting */
+       /**
+        * @EVT_FPGA_LOAD:
+        * The FPGA load hook is called after loading an FPGA with a new binary.
+        * Its parameter is of type struct event_fpga_load and contains
+        * information about the loaded image.
+        */
+       EVT_FPGA_LOAD,
+
+       /**
+        * @EVT_FT_FIXUP:
+        * This event is triggered during device-tree fix up after all
+        * other device-tree fixups have been executed.
+        * Its parameter is of type struct event_ft_fixup which contains
+        * the address of the device-tree to fix up and the list of images to be
+        * booted.
+        * A non-zero return code from the event handler let's booting the
+        * images fail.
+        */
        EVT_FT_FIXUP,
 
-       /* To be called once, before calling main_loop() */
+       /**
+        * @EVT_MAIN_LOOP:
+        * This event is triggered immediately before calling main_loop() which
+        * is the entry point of the command line. Its parameter is NULL.
+        * A non-zero return value causes the boot to fail.
+        */
        EVT_MAIN_LOOP,
 
+       /**
+        * @EVT_COUNT:
+        * This constants holds the maximum event number + 1 and is used when
+        * looping over all event classes.
+        */
        EVT_COUNT
 };
 
@@ -60,6 +150,19 @@ union event_data {
        } 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
         *
         * @tree: tree to update