[PATCH v6 05/10] dt-bindings: i3c: Add macros to help fill I3C/I2C device's reg property
From: Boris Brezillon <hidden>
Date: 2018-07-19 15:29:58
Also in:
linux-doc, linux-gpio, linux-i2c, lkml
Subsystem:
i3c subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Alexandre Belloni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> 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