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22#include <linux/module.h>
23#include <linux/moduleparam.h>
24#include <linux/init.h>
25#include <linux/io.h>
26#include <linux/delay.h>
27#include <linux/pm.h>
28#include <linux/platform_device.h>
29#include <linux/device.h>
30#include <linux/slab.h>
31#include <linux/clk.h>
32#include <linux/mfd/davinci_voicecodec.h>
33#include <linux/spi/spi.h>
34
35#include <sound/core.h>
36#include <sound/pcm.h>
37#include <sound/pcm_params.h>
38#include <sound/soc.h>
39#include <sound/initval.h>
40
41static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
42 SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
43 SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
44};
45
46static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
47{
48 struct snd_soc_codec *codec = dai->codec;
49 u8 reg;
50
51 if (mute)
52 reg = DAVINCI_VC_REG09_MUTE;
53 else
54 reg = 0;
55
56 snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
57 reg);
58
59 return 0;
60}
61
62static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
63 int clk_id, unsigned int freq, int dir)
64{
65 switch (freq) {
66 case 22579200:
67 case 27000000:
68 case 33868800:
69 return 0;
70 }
71
72 return -EINVAL;
73}
74
75static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
76 enum snd_soc_bias_level level)
77{
78 switch (level) {
79 case SND_SOC_BIAS_ON:
80 snd_soc_write(codec, DAVINCI_VC_REG12,
81 DAVINCI_VC_REG12_POWER_ALL_ON);
82 break;
83 case SND_SOC_BIAS_PREPARE:
84 break;
85 case SND_SOC_BIAS_STANDBY:
86 snd_soc_write(codec, DAVINCI_VC_REG12,
87 DAVINCI_VC_REG12_POWER_ALL_OFF);
88 break;
89 case SND_SOC_BIAS_OFF:
90
91 snd_soc_write(codec, DAVINCI_VC_REG12,
92 DAVINCI_VC_REG12_POWER_ALL_OFF);
93 break;
94 }
95
96 return 0;
97}
98
99#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
100#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
101
102static const struct snd_soc_dai_ops cq93vc_dai_ops = {
103 .digital_mute = cq93vc_mute,
104 .set_sysclk = cq93vc_set_dai_sysclk,
105};
106
107static struct snd_soc_dai_driver cq93vc_dai = {
108 .name = "cq93vc-hifi",
109 .playback = {
110 .stream_name = "Playback",
111 .channels_min = 1,
112 .channels_max = 2,
113 .rates = CQ93VC_RATES,
114 .formats = CQ93VC_FORMATS,},
115 .capture = {
116 .stream_name = "Capture",
117 .channels_min = 1,
118 .channels_max = 2,
119 .rates = CQ93VC_RATES,
120 .formats = CQ93VC_FORMATS,},
121 .ops = &cq93vc_dai_ops,
122};
123
124static struct regmap *cq93vc_get_regmap(struct device *dev)
125{
126 struct davinci_vc *davinci_vc = dev->platform_data;
127
128 return davinci_vc->regmap;
129}
130
131static const struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
132 .set_bias_level = cq93vc_set_bias_level,
133 .get_regmap = cq93vc_get_regmap,
134 .component_driver = {
135 .controls = cq93vc_snd_controls,
136 .num_controls = ARRAY_SIZE(cq93vc_snd_controls),
137 },
138};
139
140static int cq93vc_platform_probe(struct platform_device *pdev)
141{
142 return snd_soc_register_codec(&pdev->dev,
143 &soc_codec_dev_cq93vc, &cq93vc_dai, 1);
144}
145
146static int cq93vc_platform_remove(struct platform_device *pdev)
147{
148 snd_soc_unregister_codec(&pdev->dev);
149 return 0;
150}
151
152static struct platform_driver cq93vc_codec_driver = {
153 .driver = {
154 .name = "cq93vc-codec",
155 },
156
157 .probe = cq93vc_platform_probe,
158 .remove = cq93vc_platform_remove,
159};
160
161module_platform_driver(cq93vc_codec_driver);
162
163MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
164MODULE_AUTHOR("Miguel Aguilar");
165MODULE_LICENSE("GPL");
166