1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2 /*
3 * cs35l45.h -- CS35L45 ALSA SoC audio driver DT bindings header
4 *
5 * Copyright 2022 Cirrus Logic, Inc.
6 */
7
8 #ifndef DT_CS35L45_H
9 #define DT_CS35L45_H
10
11 /*
12 * cirrus,asp-sdout-hiz-ctrl
13 *
14 * TX_HIZ_UNUSED: TX pin high-impedance during unused slots.
15 * TX_HIZ_DISABLED: TX pin high-impedance when all channels disabled.
16 */
17 #define CS35L45_ASP_TX_HIZ_UNUSED 0x1
18 #define CS35L45_ASP_TX_HIZ_DISABLED 0x2
19
20 /*
21 * Optional GPIOX Sub-nodes:
22 * The cs35l45 node can have up to three "cirrus,gpio-ctrlX" ('X' = [1,2,3])
23 * sub-nodes for configuring the GPIO pins.
24 *
25 * - gpio-dir : GPIO pin direction. Valid only when 'gpio-ctrl'
26 * is 1.
27 * 0 = Output
28 * 1 = Input (Default)
29 *
30 * - gpio-lvl : GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0.
31 *
32 * 0 = Low (Default)
33 * 1 = High
34 *
35 * - gpio-op-cfg : GPIO output configuration. Valid only when 'gpio-ctrl' is 1
36 * and 'gpio-dir' is 0.
37 *
38 * 0 = CMOS (Default)
39 * 1 = Open Drain
40 *
41 * - gpio-pol : GPIO output polarity select. Valid only when 'gpio-ctrl' is 1
42 * and 'gpio-dir' is 0.
43 *
44 * 0 = Non-inverted, Active High (Default)
45 * 1 = Inverted, Active Low
46 *
47 * - gpio-invert : Defines the polarity of the GPIO pin if configured
48 * as input.
49 *
50 * 0 = Not inverted (Default)
51 * 1 = Inverted
52 *
53 * - gpio-ctrl : Defines the function of the GPIO pin.
54 *
55 * GPIO1:
56 * 0 = High impedance input (Default)
57 * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
58 * 2 = Pin acts as MDSYNC, direction controlled by MDSYNC
59 * 3-7 = Reserved
60 *
61 * GPIO2:
62 * 0 = High impedance input (Default)
63 * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
64 * 2 = Pin acts as open drain INT
65 * 3 = Reserved
66 * 4 = Pin acts as push-pull output INT. Active low.
67 * 5 = Pin acts as push-pull output INT. Active high.
68 * 6,7 = Reserved
69 *
70 * GPIO3:
71 * 0 = High impedance input (Default)
72 * 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
73 * 2-7 = Reserved
74 */
75 #define CS35L45_NUM_GPIOS 0x3
76
77 #endif /* DT_CS35L45_H */
78
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