1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
4 *
5 * Copyright (C) 2010 Texas Instruments, Inc
6 *
7 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
8 */
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/init.h>
12 #include <linux/io.h>
13 #include <linux/delay.h>
14 #include <linux/pm.h>
15 #include <linux/platform_device.h>
16 #include <linux/device.h>
17 #include <linux/slab.h>
18 #include <linux/clk.h>
19 #include <linux/mfd/davinci_voicecodec.h>
20 #include <linux/spi/spi.h>
21
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/initval.h>
27
28 static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
29 SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
30 SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
31 };
32
33 static int cq93vc_mute(struct snd_soc_dai *dai, int mute, int direction)
34 {
35 struct snd_soc_component *component = dai->component;
36 u8 reg;
37
38 if (mute)
39 reg = DAVINCI_VC_REG09_MUTE;
40 else
41 reg = 0;
42
43 snd_soc_component_update_bits(component, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
44 reg);
45
46 return 0;
47 }
48
49 static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
50 int clk_id, unsigned int freq, int dir)
51 {
52 switch (freq) {
53 case 22579200:
54 case 27000000:
55 case 33868800:
56 return 0;
57 }
58
59 return -EINVAL;
60 }
61
62 static int cq93vc_set_bias_level(struct snd_soc_component *component,
63 enum snd_soc_bias_level level)
64 {
65 switch (level) {
66 case SND_SOC_BIAS_ON:
67 snd_soc_component_write(component, DAVINCI_VC_REG12,
68 DAVINCI_VC_REG12_POWER_ALL_ON);
69 break;
70 case SND_SOC_BIAS_PREPARE:
71 break;
72 case SND_SOC_BIAS_STANDBY:
73 snd_soc_component_write(component, DAVINCI_VC_REG12,
74 DAVINCI_VC_REG12_POWER_ALL_OFF);
75 break;
76 case SND_SOC_BIAS_OFF:
77 /* force all power off */
78 snd_soc_component_write(component, DAVINCI_VC_REG12,
79 DAVINCI_VC_REG12_POWER_ALL_OFF);
80 break;
81 }
82
83 return 0;
84 }
85
86 #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
87 #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
88
89 static const struct snd_soc_dai_ops cq93vc_dai_ops = {
90 .mute_stream = cq93vc_mute,
91 .set_sysclk = cq93vc_set_dai_sysclk,
92 .no_capture_mute = 1,
93 };
94
95 static struct snd_soc_dai_driver cq93vc_dai = {
96 .name = "cq93vc-hifi",
97 .playback = {
98 .stream_name = "Playback",
99 .channels_min = 1,
100 .channels_max = 2,
101 .rates = CQ93VC_RATES,
102 .formats = CQ93VC_FORMATS,},
103 .capture = {
104 .stream_name = "Capture",
105 .channels_min = 1,
106 .channels_max = 2,
107 .rates = CQ93VC_RATES,
108 .formats = CQ93VC_FORMATS,},
109 .ops = &cq93vc_dai_ops,
110 };
111
112 static int cq93vc_probe(struct snd_soc_component *component)
113 {
114 struct davinci_vc *davinci_vc = component->dev->platform_data;
115
116 snd_soc_component_init_regmap(component, davinci_vc->regmap);
117
118 return 0;
119 }
120
121 static const struct snd_soc_component_driver soc_component_dev_cq93vc = {
122 .set_bias_level = cq93vc_set_bias_level,
123 .probe = cq93vc_probe,
124 .controls = cq93vc_snd_controls,
125 .num_controls = ARRAY_SIZE(cq93vc_snd_controls),
126 .idle_bias_on = 1,
127 .use_pmdown_time = 1,
128 .endianness = 1,
129 };
130
131 static int cq93vc_platform_probe(struct platform_device *pdev)
132 {
133 return devm_snd_soc_register_component(&pdev->dev,
134 &soc_component_dev_cq93vc, &cq93vc_dai, 1);
135 }
136
137 static struct platform_driver cq93vc_codec_driver = {
138 .driver = {
139 .name = "cq93vc-codec",
140 },
141
142 .probe = cq93vc_platform_probe,
143 };
144
145 module_platform_driver(cq93vc_codec_driver);
146
147 MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
148 MODULE_AUTHOR("Miguel Aguilar");
149 MODULE_LICENSE("GPL");
150
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