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drivers: Add a new framework for multiplexer devices

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Add a new subsystem that handles multiplexer controllers. The API is the
same as in Linux.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
[trini: Update some error calls to use different functions or pass
        correct arguments]
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Jean-Jacques Hiblot
2020-10-16 16:16:30 +05:30
committed by Tom Rini
parent 39dd7c1d6b
commit 0ad40b2463
9 changed files with 606 additions and 0 deletions
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17
include/dt-bindings/mux/mux.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* This header provides constants for most Multiplexer bindings.
*
* Most Multiplexer bindings specify an idle state. In most cases, the
* the multiplexer can be left as is when idle, and in some cases it can
* disconnect the input/output and leave the multiplexer in a high
* impedance state.
*/
#ifndef _DT_BINDINGS_MUX_MUX_H
#define _DT_BINDINGS_MUX_MUX_H
#define MUX_IDLE_AS_IS (-1)
#define MUX_IDLE_DISCONNECT (-2)
#endif