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    Subject[PATCH v3 05/14] mux: core: Add usb.h header with MUX_USB_* and and MUX_TYPEC_* state constants
    Date
    Add MUX_USB_* and MUX_TYPEC_* state constant defines, which can be used by
    USB device/host, resp. Type-C polarity/role/altmode mux drivers and
    consumers to ensure that they agree on the meaning of the
    mux_control_select() state argument.

    Signed-off-by: Hans de Goede <hdegoede@redhat.com>
    ---
    Changes in v2:
    -Start numbering of defines at 0 not 1
    -Use a new usb.h header, rather then adding these to consumer.h
    -Add separate MUX_USB_* and MUX_TYPEC_* defines

    Changes in v3:
    -Simplify MUX_TYPEC_* states, drop having separate USB HOST / DEVICE states
    ---
    include/linux/mux/usb.h | 31 +++++++++++++++++++++++++++++++
    1 file changed, 31 insertions(+)
    create mode 100644 include/linux/mux/usb.h

    diff --git a/include/linux/mux/usb.h b/include/linux/mux/usb.h
    new file mode 100644
    index 000000000000..2fec06846e14
    --- /dev/null
    +++ b/include/linux/mux/usb.h
    @@ -0,0 +1,31 @@
    +/*
    + * mux/usb.h - definitions for USB multiplexers
    + *
    + * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU General Public License version 2 as
    + * published by the Free Software Foundation.
    + */
    +#ifndef _LINUX_MUX_USB_H
    +#define _LINUX_MUX_USB_H
    +
    +/* Mux state values for USB device/host role muxes */
    +#define MUX_USB_DEVICE (0) /* USB device mode */
    +#define MUX_USB_HOST (1) /* USB host mode */
    +#define MUX_USB_STATES (2)
    +
    +/*
    + * Mux state values for Type-C polarity/role/altmode muxes.
    + *
    + * MUX_TYPEC_POLARITY_INV may be or-ed together with any other mux-state as
    + * inverted-polarity (Type-C plugged in upside down) can happen with any
    + * other mux-state.
    + */
    +#define MUX_TYPEC_POLARITY_INV BIT(0) /* Polarity inverted bit */
    +#define MUX_TYPEC_USB (0 << 1) /* USB only mode */
    +#define MUX_TYPEC_USB_AND_DP (1 << 1) /* USB host + 2 lanes DP */
    +#define MUX_TYPEC_DP (2 << 1) /* 4 lanes Display Port */
    +#define MUX_TYPEC_STATES (3 << 1)
    +
    +#endif /* _LINUX_MUX_TYPEC_H */
    --
    2.14.1
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