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    Subject[PATCH v5 05/10] dt-bindings: i3c: Add macros to help fill I3C/I2C device's reg property
    Date
    The reg property of devices connected to an I3C bus have 3 cells, and
    filling them manually is not trivial. Provides macros to help doing
    that.

    Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
    Reviewed-by: Rob Herring <robh@kernel.org>
    ---
    Changes in v5:
    - none
    ---
    include/dt-bindings/i3c/i3c.h | 28 ++++++++++++++++++++++++++++
    1 file changed, 28 insertions(+)
    create mode 100644 include/dt-bindings/i3c/i3c.h

    diff --git a/include/dt-bindings/i3c/i3c.h b/include/dt-bindings/i3c/i3c.h
    new file mode 100644
    index 000000000000..97448c546649
    --- /dev/null
    +++ b/include/dt-bindings/i3c/i3c.h
    @@ -0,0 +1,28 @@
    +/* SPDX-License-Identifier: GPL-2.0 */
    +/*
    + * Copyright (C) 2017 Cadence Design Systems Inc.
    + *
    + * Author: Boris Brezillon <boris.brezillon@bootlin.com>
    + */
    +
    +#ifndef _DT_BINDINGS_I3C_I3C_H
    +#define _DT_BINDINGS_I3C_I3C_H
    +
    +#define IS_I2C_DEV 0x80000000
    +
    +#define I2C_DEV(addr, lvr) \
    + (addr) (IS_I2C_DEV | (lvr)) 0x0
    +
    +#define I3C_PID(manufid, partid, instid, extrainfo) \
    + ((manufid) << 1) \
    + (((partid) << 16) | ((instid) << 12) | (extrainfo))
    +
    +#define I3C_DEV_WITH_STATIC_ADDR(addr, manufid, partid, \
    + instid, extrainfo) \
    + (addr) I3C_PID(manufid, partid, instid, extrainfo)
    +
    +#define I3C_DEV(manufid, partid, instid, extrainfo) \
    + I3C_DEV_WITH_STATIC_ADDR(0x0, manufid, partid, \
    + instid, extrainfo)
    +
    +#endif
    --
    2.14.1
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