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usb: typec: Provide definitions for the USB modes

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Defining the USB modes from the latest USB Power Delivery
Specification - USB 2.0, USB 3.2 and USB4 - as special modal
states just like the Accessory Modes.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191230142611.24921-14-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2019-12-30 17:26:09 +03:00 committed by Greg Kroah-Hartman
parent 87e3daa005
commit 0f37a60709
1 changed files with 16 additions and 0 deletions
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16
include/linux/usb/typec_altmode.h
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@ -101,6 +101,22 @@ enum {
TYPEC_MODE_DEBUG, /* Debug Accessory */
};
/*
* USB4 also requires that the pins on the connector are repurposed, just like
* Alternate Modes. USB4 mode is however not entered with the Enter Mode Command
* like the Alternate Modes are, but instead with a special Enter_USB Message.
* The Enter_USB Message can also be used for setting to connector to operate in
* USB 3.2 or in USB 2.0 mode instead of USB4.
*
* The Enter_USB specific "USB Modes" are also supplied here as special modal
* state values, just like the Accessory Modes.
*/
enum {
TYPEC_MODE_USB2 = TYPEC_MODE_DEBUG, /* USB 2.0 mode */
TYPEC_MODE_USB3, /* USB 3.2 mode */
TYPEC_MODE_USB4 /* USB4 mode */
};
#define TYPEC_MODAL_STATE(_state_) ((_state_) + TYPEC_STATE_MODAL)
struct typec_altmode *typec_altmode_get_plug(struct typec_altmode *altmode,