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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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