From: Guenter Roeck <linux@roeck-us.net>
To: Kyle Tso <kyletso@google.com>,
heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org,
hdegoede@redhat.com, robh+dt@kernel.org
Cc: badhri@google.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v4 3/8] usb: pd: Make SVDM Version configurable in VDM header
Date: Tue, 2 Feb 2021 06:50:04 -0800 [thread overview]
Message-ID: <029f8d48-8932-8a2c-4edf-df73d66b21b5@roeck-us.net> (raw)
In-Reply-To: <20210202093342.738691-4-kyletso@google.com>
On 2/2/21 1:33 AM, Kyle Tso wrote:
> PD Rev 3.0 introduces SVDM Version 2.0. This patch makes the field
> configuable in the header in order to be able to be compatible with
> older SVDM version.
>
> Signed-off-by: Kyle Tso <kyletso@google.com>
> ---
> include/linux/usb/pd_vdo.h | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/usb/pd_vdo.h b/include/linux/usb/pd_vdo.h
> index e9b6822c54c2..69ed6929ce6e 100644
> --- a/include/linux/usb/pd_vdo.h
> +++ b/include/linux/usb/pd_vdo.h
> @@ -21,22 +21,24 @@
> * ----------
> * <31:16> :: SVID
> * <15> :: VDM type ( 1b == structured, 0b == unstructured )
> - * <14:13> :: Structured VDM version (can only be 00 == 1.0 currently)
> + * <14:13> :: Structured VDM version
> * <12:11> :: reserved
> * <10:8> :: object position (1-7 valid ... used for enter/exit mode only)
> * <7:6> :: command type (SVDM only?)
> * <5> :: reserved (SVDM), command type (UVDM)
> * <4:0> :: command
> */
> -#define VDO(vid, type, custom) \
> +#define VDO(vid, type, ver, custom) \
> (((vid) << 16) | \
> ((type) << 15) | \
> + ((ver) << 13) | \
> ((custom) & 0x7FFF))
>
Yu have to fix all users of VDO() as well, or the code will
no longer compile after this patch.
Guenter
> #define VDO_SVDM_TYPE (1 << 15)
> #define VDO_SVDM_VERS(x) ((x) << 13)
> #define VDO_OPOS(x) ((x) << 8)
> #define VDO_CMDT(x) ((x) << 6)
> +#define VDO_SVDM_VERS_MASK VDO_SVDM_VERS(0x3)
> #define VDO_OPOS_MASK VDO_OPOS(0x7)
> #define VDO_CMDT_MASK VDO_CMDT(0x3)
>
> @@ -74,6 +76,7 @@
>
> #define PD_VDO_VID(vdo) ((vdo) >> 16)
> #define PD_VDO_SVDM(vdo) (((vdo) >> 15) & 1)
> +#define PD_VDO_SVDM_VER(vdo) (((vdo) >> 13) & 0x3)
> #define PD_VDO_OPOS(vdo) (((vdo) >> 8) & 0x7)
> #define PD_VDO_CMD(vdo) ((vdo) & 0x1f)
> #define PD_VDO_CMDT(vdo) (((vdo) >> 6) & 0x3)
>
next prev parent reply other threads:[~2021-02-02 14:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 9:33 [PATCH v4 0/8] common SVDM version and VDO from dt Kyle Tso
2021-02-02 9:33 ` [PATCH v4 1/8] usb: typec: Manage SVDM version Kyle Tso
2021-02-02 9:33 ` [PATCH v4 2/8] usb: pd: Update VDO definitions Kyle Tso
2021-02-02 9:33 ` [PATCH v4 3/8] usb: pd: Make SVDM Version configurable in VDM header Kyle Tso
2021-02-02 14:50 ` Guenter Roeck [this message]
2021-02-02 14:52 ` Kyle Tso
2021-02-02 9:33 ` [PATCH v4 4/8] usb: typec: tcpm: Detemine common SVDM Version Kyle Tso
2021-02-02 9:33 ` [PATCH v4 5/8] usb: typec: ucsi: " Kyle Tso
2021-02-02 9:33 ` [PATCH v4 6/8] usb: typec: displayport: Fill the negotiated SVDM Version in the header Kyle Tso
2021-02-02 9:33 ` [PATCH v4 7/8] dt-bindings: connector: Add SVDM VDO properties Kyle Tso
2021-02-02 9:33 ` [PATCH v4 8/8] usb: typec: tcpm: Get Sink VDO from fwnode Kyle Tso
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