forked from mirrors/linux
fec1982d70
99a741aa7a2d ("i2c: mux: gpio: remove support for class-based device
instantiation") removed the last call to i2c_mux_add_adapter() with a
non-null class argument. Therefore the class argument can be removed.
Note: Class-based device instantiation is a legacy mechanism which
shouldn't be used in new code, so we can rule out that this argument
may be needed again in the future.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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*
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* i2c-mux.h - functions for the i2c-bus mux support
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*
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* Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
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* Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
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* Michael Lawnick <michael.lawnick.ext@nsn.com>
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*/
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#ifndef _LINUX_I2C_MUX_H
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#define _LINUX_I2C_MUX_H
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#ifdef __KERNEL__
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#include <linux/bitops.h>
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struct i2c_mux_core {
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struct i2c_adapter *parent;
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struct device *dev;
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unsigned int mux_locked:1;
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unsigned int arbitrator:1;
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unsigned int gate:1;
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void *priv;
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int (*select)(struct i2c_mux_core *, u32 chan_id);
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int (*deselect)(struct i2c_mux_core *, u32 chan_id);
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int num_adapters;
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int max_adapters;
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struct i2c_adapter *adapter[];
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};
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struct i2c_mux_core *i2c_mux_alloc(struct i2c_adapter *parent,
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struct device *dev, int max_adapters,
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int sizeof_priv, u32 flags,
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int (*select)(struct i2c_mux_core *, u32),
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int (*deselect)(struct i2c_mux_core *, u32));
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/* flags for i2c_mux_alloc */
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#define I2C_MUX_LOCKED BIT(0)
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#define I2C_MUX_ARBITRATOR BIT(1)
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#define I2C_MUX_GATE BIT(2)
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static inline void *i2c_mux_priv(struct i2c_mux_core *muxc)
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{
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return muxc->priv;
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}
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struct i2c_adapter *i2c_root_adapter(struct device *dev);
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/*
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* Called to create an i2c bus on a multiplexed bus segment.
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* The chan_id parameter is passed to the select and deselect
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* callback functions to perform hardware-specific mux control.
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*/
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int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
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u32 force_nr, u32 chan_id);
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void i2c_mux_del_adapters(struct i2c_mux_core *muxc);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_I2C_MUX_H */
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