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| author |   Badhri Jagan Sridharan <badhri@google.com> | 2017-11-15 17:01:55 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-07 16:03:15 +0100 |
| commit | 5007e1b5db736e76360047a6974c5cf7beb2d40e (patch) | |
| tree | e6a2ebf7e5dbfa88cfafb287fefde3b587a13bdb /include/linux/usb/pd.h | |
| parent | usb: early: Correct the endpoint type value for bulk in endpoint (diff) | |
| download | linux-dev-5007e1b5db736e76360047a6974c5cf7beb2d40e.tar.xz linux-dev-5007e1b5db736e76360047a6974c5cf7beb2d40e.zip | |
typec: tcpm: Validate source and sink caps
The source and sink caps should follow the following rules.
This patch validates whether the src_caps/snk_caps adheres
to it.
6.4.1 Capabilities Message
A Capabilities message (Source Capabilities message or Sink
Capabilities message) shall have at least one Power
Data Object for vSafe5V. The Capabilities message shall also
contain the sending Port’s information followed by up to
6 additional Power Data Objects. Power Data Objects in a
Capabilities message shall be sent in the following order:
1. The vSafe5V Fixed Supply Object shall always be the first object.
2. The remaining Fixed Supply Objects, if present, shall be sent
in voltage order; lowest to highest.
3. The Battery Supply Objects, if present shall be sent in Minimum
Voltage order; lowest to highest.
4. The Variable Supply (non-battery) Objects, if present, shall be
sent in Minimum Voltage order; lowest to highest.
Errors in source/sink_caps of the local port will prevent
the port registration. Whereas, errors in source caps of partner
device would only log them.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb/pd.h')
| -rw-r--r-- | include/linux/usb/pd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h index e00051ced806..b3d41d7409b3 100644 --- a/include/linux/usb/pd.h +++ b/include/linux/usb/pd.h @@ -148,6 +148,8 @@ enum pd_pdo_type { (PDO_TYPE(PDO_TYPE_FIXED) | (flags) | \ PDO_FIXED_VOLT(mv) | PDO_FIXED_CURR(ma)) +#define VSAFE5V 5000 /* mv units */ + #define PDO_BATT_MAX_VOLT_SHIFT 20 /* 50mV units */ #define PDO_BATT_MIN_VOLT_SHIFT 10 /* 50mV units */ #define PDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */ |