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usb: typec: Separate the definitions for data and power roles

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USB Type-C specification v1.2 separated the power and data
roles more clearly. Dual-Role-Data term was introduced, and
the meaning of DRP was changed from "Dual-Role-Port" to
"Dual-Role-Power".

In order to allow the port drivers to describe the
capabilities of the ports more clearly according to the
newest specifications, introducing separate definitions for
the data roles.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus
2018-03-20 15:57:05 +03:00
committed by Greg Kroah-Hartman
parent fde0aa6c17
commit ceeb162500
8 changed files with 82 additions and 43 deletions
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1
include/linux/usb/tcpm.h
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@@ -91,6 +91,7 @@ struct tcpc_config {
unsigned int operating_snk_mw;
enum typec_port_type type;
enum typec_port_data data;
enum typec_role default_role;
bool try_role_hw; /* try.{src,snk} implemented in hardware */

14
include/linux/usb/typec.h
View File

@@ -22,9 +22,15 @@ struct typec_port;
struct fwnode_handle;
enum typec_port_type {
TYPEC_PORT_SRC,
TYPEC_PORT_SNK,
TYPEC_PORT_DRP,
};
enum typec_port_data {
TYPEC_PORT_DFP,
TYPEC_PORT_UFP,
TYPEC_PORT_DRP,
TYPEC_PORT_DRD,
};
enum typec_plug_type {
@@ -186,10 +192,11 @@ struct typec_partner_desc {
/*
* struct typec_capability - USB Type-C Port Capabilities
* @role: DFP (Host-only), UFP (Device-only) or DRP (Dual Role)
* @type: Supported power role of the port
* @data: Supported data role of the port
* @revision: USB Type-C Specification release. Binary coded decimal
* @pd_revision: USB Power Delivery Specification revision if supported
* @prefer_role: Initial role preference
* @prefer_role: Initial role preference (DRP ports).
* @accessory: Supported Accessory Modes
* @sw: Cable plug orientation switch
* @mux: Multiplexer switch for Alternate/Accessory Modes
@@ -205,6 +212,7 @@ struct typec_partner_desc {
*/
struct typec_capability {
enum typec_port_type type;
enum typec_port_data data;
u16 revision; /* 0120H = "1.2" */
u16 pd_revision; /* 0300H = "3.0" */
int prefer_role;