Quelle cs35l45.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* cs35l45.h -- CS35L45 ALSA SoC audio driver DT bindings header
*
* Copyright 2022 Cirrus Logic, Inc.
*/

#ifndef DT_CS35L45_H
#define DT_CS35L45_H

/*
* cirrus,asp-sdout-hiz-ctrl
*
* TX_HIZ_UNUSED:   TX pin high-impedance during unused slots.
* TX_HIZ_DISABLED: TX pin high-impedance when all channels disabled.
*/
#define CS35L45_ASP_TX_HIZ_UNUSED 0x1
#define CS35L45_ASP_TX_HIZ_DISABLED 0x2

/*
* Optional GPIOX Sub-nodes:
*  The cs35l45 node can have up to three "cirrus,gpio-ctrlX" ('X' = [1,2,3])
*  sub-nodes for configuring the GPIO pins.
*
* - gpio-dir : GPIO pin direction. Valid only when 'gpio-ctrl'
*   is 1.
*    0 = Output
*    1 = Input (Default)
*
* - gpio-lvl : GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0.
*
*    0 = Low (Default)
*    1 = High
*
* - gpio-op-cfg : GPIO output configuration. Valid only when 'gpio-ctrl' is 1
*   and 'gpio-dir' is 0.
*
*    0 = CMOS (Default)
*    1 = Open Drain
*
* - gpio-pol : GPIO output polarity select. Valid only when 'gpio-ctrl' is 1
*   and 'gpio-dir' is 0.
*
*    0 = Non-inverted, Active High (Default)
*    1 = Inverted, Active Low
*
* - gpio-invert : Defines the polarity of the GPIO pin if configured
*   as input.
*
*    0 = Not inverted (Default)
*    1 = Inverted
*
* - gpio-ctrl : Defines the function of the GPIO pin.
*
* GPIO1:
*   0 = High impedance input (Default)
*   1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
*   2 = Pin acts as MDSYNC, direction controlled by MDSYNC
*   3-7 = Reserved
*
* GPIO2:
*   0 = High impedance input (Default)
*   1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
*   2 = Pin acts as open drain INT
*   3 = Reserved
*   4 = Pin acts as push-pull output INT. Active low.
*   5 = Pin acts as push-pull output INT. Active high.
*   6,7 = Reserved
*
* GPIO3:
*   0 = High impedance input (Default)
*   1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
*   2-7 = Reserved
*/
#define CS35L45_NUM_GPIOS 0x3

#endif /* DT_CS35L45_H */

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