1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // |
3 | // Copyright (c) 2020 BayLibre, SAS. |
4 | // Author: Jerome Brunet <jbrunet@baylibre.com> |
5 | |
6 | #include <linux/bitfield.h> |
7 | #include <sound/pcm_params.h> |
8 | #include <sound/soc.h> |
9 | #include <sound/soc-dai.h> |
10 | |
11 | #include <dt-bindings/sound/meson-aiu.h> |
12 | #include "aiu.h" |
13 | #include "meson-codec-glue.h" |
14 | |
15 | #define CTRL_CLK_SEL GENMASK(1, 0) |
16 | #define CTRL_DATA_SEL_SHIFT 4 |
17 | #define CTRL_DATA_SEL (0x3 << CTRL_DATA_SEL_SHIFT) |
18 | |
19 | static const char * const aiu_codec_ctrl_mux_texts[] = { |
20 | "DISABLED" , "PCM" , "I2S" , |
21 | }; |
22 | |
23 | static int aiu_codec_ctrl_mux_put_enum(struct snd_kcontrol *kcontrol, |
24 | struct snd_ctl_elem_value *ucontrol) |
25 | { |
26 | struct snd_soc_component *component = |
27 | snd_soc_dapm_kcontrol_component(kcontrol); |
28 | struct snd_soc_dapm_context *dapm = |
29 | snd_soc_dapm_kcontrol_dapm(kcontrol); |
30 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
31 | unsigned int mux, changed; |
32 | |
33 | mux = snd_soc_enum_item_to_val(e, item: ucontrol->value.enumerated.item[0]); |
34 | changed = snd_soc_component_test_bits(component, reg: e->reg, |
35 | CTRL_DATA_SEL, |
36 | FIELD_PREP(CTRL_DATA_SEL, mux)); |
37 | |
38 | if (!changed) |
39 | return 0; |
40 | |
41 | /* Force disconnect of the mux while updating */ |
42 | snd_soc_dapm_mux_update_power(dapm, kcontrol, mux: 0, NULL, NULL); |
43 | |
44 | /* Reset the source first */ |
45 | snd_soc_component_update_bits(component, reg: e->reg, |
46 | CTRL_CLK_SEL | |
47 | CTRL_DATA_SEL, |
48 | FIELD_PREP(CTRL_CLK_SEL, 0) | |
49 | FIELD_PREP(CTRL_DATA_SEL, 0)); |
50 | |
51 | /* Set the appropriate source */ |
52 | snd_soc_component_update_bits(component, reg: e->reg, |
53 | CTRL_CLK_SEL | |
54 | CTRL_DATA_SEL, |
55 | FIELD_PREP(CTRL_CLK_SEL, mux) | |
56 | FIELD_PREP(CTRL_DATA_SEL, mux)); |
57 | |
58 | snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); |
59 | |
60 | return 1; |
61 | } |
62 | |
63 | static SOC_ENUM_SINGLE_DECL(aiu_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL, |
64 | CTRL_DATA_SEL_SHIFT, |
65 | aiu_codec_ctrl_mux_texts); |
66 | |
67 | static const struct snd_kcontrol_new aiu_hdmi_ctrl_mux = |
68 | SOC_DAPM_ENUM_EXT("HDMI Source" , aiu_hdmi_ctrl_mux_enum, |
69 | snd_soc_dapm_get_enum_double, |
70 | aiu_codec_ctrl_mux_put_enum); |
71 | |
72 | static const struct snd_soc_dapm_widget aiu_hdmi_ctrl_widgets[] = { |
73 | SND_SOC_DAPM_MUX("HDMI CTRL SRC" , SND_SOC_NOPM, 0, 0, |
74 | &aiu_hdmi_ctrl_mux), |
75 | }; |
76 | |
77 | static const struct snd_soc_dai_ops aiu_codec_ctrl_input_ops = { |
78 | .probe = meson_codec_glue_input_dai_probe, |
79 | .remove = meson_codec_glue_input_dai_remove, |
80 | .hw_params = meson_codec_glue_input_hw_params, |
81 | .set_fmt = meson_codec_glue_input_set_fmt, |
82 | }; |
83 | |
84 | static const struct snd_soc_dai_ops aiu_codec_ctrl_output_ops = { |
85 | .startup = meson_codec_glue_output_startup, |
86 | }; |
87 | |
88 | #define AIU_CODEC_CTRL_FORMATS \ |
89 | (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ |
90 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE | \ |
91 | SNDRV_PCM_FMTBIT_S32_LE) |
92 | |
93 | #define AIU_CODEC_CTRL_STREAM(xname, xsuffix) \ |
94 | { \ |
95 | .stream_name = xname " " xsuffix, \ |
96 | .channels_min = 1, \ |
97 | .channels_max = 8, \ |
98 | .rate_min = 5512, \ |
99 | .rate_max = 192000, \ |
100 | .formats = AIU_CODEC_CTRL_FORMATS, \ |
101 | } |
102 | |
103 | #define AIU_CODEC_CTRL_INPUT(xname) { \ |
104 | .name = "CODEC CTRL " xname, \ |
105 | .playback = AIU_CODEC_CTRL_STREAM(xname, "Playback"), \ |
106 | .ops = &aiu_codec_ctrl_input_ops, \ |
107 | } |
108 | |
109 | #define AIU_CODEC_CTRL_OUTPUT(xname) { \ |
110 | .name = "CODEC CTRL " xname, \ |
111 | .capture = AIU_CODEC_CTRL_STREAM(xname, "Capture"), \ |
112 | .ops = &aiu_codec_ctrl_output_ops, \ |
113 | } |
114 | |
115 | static struct snd_soc_dai_driver aiu_hdmi_ctrl_dai_drv[] = { |
116 | [CTRL_I2S] = AIU_CODEC_CTRL_INPUT("HDMI I2S IN" ), |
117 | [CTRL_PCM] = AIU_CODEC_CTRL_INPUT("HDMI PCM IN" ), |
118 | [CTRL_OUT] = AIU_CODEC_CTRL_OUTPUT("HDMI OUT" ), |
119 | }; |
120 | |
121 | static const struct snd_soc_dapm_route aiu_hdmi_ctrl_routes[] = { |
122 | { "HDMI CTRL SRC" , "I2S" , "HDMI I2S IN Playback" }, |
123 | { "HDMI CTRL SRC" , "PCM" , "HDMI PCM IN Playback" }, |
124 | { "HDMI OUT Capture" , NULL, "HDMI CTRL SRC" }, |
125 | }; |
126 | |
127 | static int aiu_hdmi_of_xlate_dai_name(struct snd_soc_component *component, |
128 | const struct of_phandle_args *args, |
129 | const char **dai_name) |
130 | { |
131 | return aiu_of_xlate_dai_name(component, args, dai_name, AIU_HDMI); |
132 | } |
133 | |
134 | static const struct snd_soc_component_driver aiu_hdmi_ctrl_component = { |
135 | .name = "AIU HDMI Codec Control" , |
136 | .dapm_widgets = aiu_hdmi_ctrl_widgets, |
137 | .num_dapm_widgets = ARRAY_SIZE(aiu_hdmi_ctrl_widgets), |
138 | .dapm_routes = aiu_hdmi_ctrl_routes, |
139 | .num_dapm_routes = ARRAY_SIZE(aiu_hdmi_ctrl_routes), |
140 | .of_xlate_dai_name = aiu_hdmi_of_xlate_dai_name, |
141 | .endianness = 1, |
142 | #ifdef CONFIG_DEBUG_FS |
143 | .debugfs_prefix = "hdmi" , |
144 | #endif |
145 | }; |
146 | |
147 | int aiu_hdmi_ctrl_register_component(struct device *dev) |
148 | { |
149 | return snd_soc_register_component(dev, component_driver: &aiu_hdmi_ctrl_component, |
150 | dai_drv: aiu_hdmi_ctrl_dai_drv, |
151 | ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv)); |
152 | } |
153 | |
154 | |