linux-kernel - [PATCH v4 3/5] usb: pd: Add helper macro to get Type C cable speed

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Date:   Tue, 19 Sep 2023 19:32:41 -0700
From:   Utkarsh Patel <utkarsh.h.patel@...el.com>
To:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:     heikki.krogerus@...ux.intel.com, pmalani@...omium.org,
        chrome-platform@...ts.linux.dev, andriy.shevchenko@...ux.intel.com,
        bleung@...omium.org, Utkarsh Patel <utkarsh.h.patel@...el.com>
Subject: [PATCH v4 3/5] usb: pd: Add helper macro to get Type C cable speed

Added a helper macro to get the Type C cable speed when provided the
cable VDO.

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@...el.com>
---
Changes in v4:
- Added this patch back in this series with Reviewed-by tag from Heikki.

Changes in v2:
- This change is being added as new patch in this series.

 include/linux/usb/pd_vdo.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/usb/pd_vdo.h b/include/linux/usb/pd_vdo.h
index b057250704e8..3a747938cdab 100644
--- a/include/linux/usb/pd_vdo.h
+++ b/include/linux/usb/pd_vdo.h
@@ -376,6 +376,7 @@
 	 | ((vbm) & 0x3) << 9 | (sbu) << 8 | (sbut) << 7 | ((cur) & 0x3) << 5	\
 	 | (vbt) << 4 | (sopp) << 3 | ((spd) & 0x7))
 
+#define VDO_TYPEC_CABLE_SPEED(vdo)	((vdo) & 0x7)
 #define VDO_TYPEC_CABLE_TYPE(vdo)	(((vdo) >> 18) & 0x3)
 
 /*
-- 
2.25.1