[RFC PATCH 1/3] usb: pd: Increase max PDO objects to 13
From: Prashant Malani <hidden>
Date: 2021-09-02 21:35:54
Also in:
linux-pm, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
Increase the max number of PDO objects to 13, to accommodate the extra PDOs added as a part of EPR (Extended Power Range) operation introduced in the USB PD Spec Rev 3.1, v 1.0. See Figure 6-54 for details. Signed-off-by: Prashant Malani <redacted> --- include/linux/usb/pd.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h
index 96b7ff66f074..7e8bdca1ce6e 100644
--- a/include/linux/usb/pd.h
+++ b/include/linux/usb/pd.h@@ -201,7 +201,13 @@ struct pd_message { } __packed; /* PDO: Power Data Object */ -#define PDO_MAX_OBJECTS 7 + +/* + * The EPR (Extended Power Range) structure is a superset of the SPR (Standard Power Range) + * capabilities structure, so set the max number of PDOs to 13 instead of 7. On SPR-only systems, + * objects 8 through 13 will just be empty. + */ +#define PDO_MAX_OBJECTS 13 enum pd_pdo_type { PDO_TYPE_FIXED = 0,
--
2.33.0.153.gba50c8fa24-goog