[PATCH 6/7] Input: add `SW_BOOT_ALT`

[Quentin Schulz]

From: Quentin Schulz <quentin.schulz at theobroma-systems.com>

This event code represents the firmware source to use at boot.
Value 0 means using "standard" firmware source, value 1 means using
"alternative" firmware source.

For example, some hardware has the ability to force the BOOTROM to load
the bootloader from a secondary firmware source (say SD card) instead of
trying with the standard first and then the secondary. This event allows
the userspace to know which firmware source was requested *in hardware*.

Signed-off-by: Quentin Schulz <quentin.schulz at theobroma-systems.com>
Link: https://lore.kernel.org/lkml/20220922101211.3215888-2-foss+kernel@0leil.net/
Cc: Quentin Schulz <foss+uboot at 0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz at theobroma-systems.com>
---
 include/dt-bindings/input/linux-event-codes.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/dt-bindings/input/linux-event-codes.h b/include/dt-bindings/input/linux-event-codes.h
index dff8e7f170..8cd2b58c81 100644
--- a/include/dt-bindings/input/linux-event-codes.h
+++ b/include/dt-bindings/input/linux-event-codes.h
@@ -917,7 +917,8 @@
 #define SW_MUTE_DEVICE		0x0e  /* set = device disabled */
 #define SW_PEN_INSERTED		0x0f  /* set = pen inserted */
 #define SW_MACHINE_COVER	0x10  /* set = cover closed */
-#define SW_MAX			0x10
+#define SW_BOOT_ALT		0x11  /* set = alternative boot firmware source */
+#define SW_MAX			0x11
 #define SW_CNT			(SW_MAX+1)
 
 /*
-- 
2.37.3