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, ucontrol->value.enumerated.item[0]);
34 changed = snd_soc_component_test_bits(component, 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, 0, NULL, NULL);
43
44 /* Reset the source first */
45 snd_soc_component_update_bits(component, 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, 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, &aiu_hdmi_ctrl_component,
150 aiu_hdmi_ctrl_dai_drv,
151 ARRAY_SIZE(aiu_hdmi_ctrl_dai_drv));
152 }
153
154
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