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Because not all I3C drivers have the hot-join feature ready, and especially not all I3C devices support hot-join feature, exporting SETDASA method could be useful. With this function, the I3C controller could perform a DAA to I3C devices when users decide to turn these I3C devices off and on again during run-time. Tested: This change has been tested with turnning off an I3C device and turning on it again during run-time. The device driver calls SETDASA method to perform DAA to the device. And communication between I3C controller and device is set up again correctly. Signed-off-by: Jack Chen <zenghuchen@google.com> Link: https://lore.kernel.org/r/20221207205059.3848851-1-zenghuchen@google.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
27 lines
843 B
C
27 lines
843 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 Cadence Design Systems Inc.
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*
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* Author: Boris Brezillon <boris.brezillon@bootlin.com>
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*/
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#ifndef I3C_INTERNALS_H
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#define I3C_INTERNALS_H
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#include <linux/i3c/master.h>
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extern struct bus_type i3c_bus_type;
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void i3c_bus_normaluse_lock(struct i3c_bus *bus);
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void i3c_bus_normaluse_unlock(struct i3c_bus *bus);
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int i3c_dev_setdasa_locked(struct i3c_dev_desc *dev);
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int i3c_dev_do_priv_xfers_locked(struct i3c_dev_desc *dev,
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struct i3c_priv_xfer *xfers,
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int nxfers);
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int i3c_dev_disable_ibi_locked(struct i3c_dev_desc *dev);
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int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev);
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int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev,
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const struct i3c_ibi_setup *req);
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void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev);
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#endif /* I3C_INTERNAL_H */
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