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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 struct snd_soc_codec *codec = codec_dai->codec;
66 struct davinci_vc *davinci_vc = codec->dev->platform_data;
67
68 switch (freq) {
69 case 22579200:
70 case 27000000:
71 case 33868800:
72 davinci_vc->cq93vc.sysclk = freq;
73 return 0;
74 }
75
76 return -EINVAL;
77}
78
79static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
80 enum snd_soc_bias_level level)
81{
82 switch (level) {
83 case SND_SOC_BIAS_ON:
84 snd_soc_write(codec, DAVINCI_VC_REG12,
85 DAVINCI_VC_REG12_POWER_ALL_ON);
86 break;
87 case SND_SOC_BIAS_PREPARE:
88 break;
89 case SND_SOC_BIAS_STANDBY:
90 snd_soc_write(codec, DAVINCI_VC_REG12,
91 DAVINCI_VC_REG12_POWER_ALL_OFF);
92 break;
93 case SND_SOC_BIAS_OFF:
94
95 snd_soc_write(codec, DAVINCI_VC_REG12,
96 DAVINCI_VC_REG12_POWER_ALL_OFF);
97 break;
98 }
99 codec->dapm.bias_level = level;
100
101 return 0;
102}
103
104#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
105#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
106
107static const struct snd_soc_dai_ops cq93vc_dai_ops = {
108 .digital_mute = cq93vc_mute,
109 .set_sysclk = cq93vc_set_dai_sysclk,
110};
111
112static struct snd_soc_dai_driver cq93vc_dai = {
113 .name = "cq93vc-hifi",
114 .playback = {
115 .stream_name = "Playback",
116 .channels_min = 1,
117 .channels_max = 2,
118 .rates = CQ93VC_RATES,
119 .formats = CQ93VC_FORMATS,},
120 .capture = {
121 .stream_name = "Capture",
122 .channels_min = 1,
123 .channels_max = 2,
124 .rates = CQ93VC_RATES,
125 .formats = CQ93VC_FORMATS,},
126 .ops = &cq93vc_dai_ops,
127};
128
129static int cq93vc_resume(struct snd_soc_codec *codec)
130{
131 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
132
133 return 0;
134}
135
136static int cq93vc_probe(struct snd_soc_codec *codec)
137{
138 struct davinci_vc *davinci_vc = codec->dev->platform_data;
139
140 davinci_vc->cq93vc.codec = codec;
141
142
143 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
144
145 return 0;
146}
147
148static int cq93vc_remove(struct snd_soc_codec *codec)
149{
150 cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
151
152 return 0;
153}
154
155static struct regmap *cq93vc_get_regmap(struct device *dev)
156{
157 struct davinci_vc *davinci_vc = dev->platform_data;
158
159 return davinci_vc->regmap;
160}
161
162static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
163 .set_bias_level = cq93vc_set_bias_level,
164 .probe = cq93vc_probe,
165 .remove = cq93vc_remove,
166 .resume = cq93vc_resume,
167 .get_regmap = cq93vc_get_regmap,
168 .controls = cq93vc_snd_controls,
169 .num_controls = ARRAY_SIZE(cq93vc_snd_controls),
170};
171
172static int cq93vc_platform_probe(struct platform_device *pdev)
173{
174 return snd_soc_register_codec(&pdev->dev,
175 &soc_codec_dev_cq93vc, &cq93vc_dai, 1);
176}
177
178static int cq93vc_platform_remove(struct platform_device *pdev)
179{
180 snd_soc_unregister_codec(&pdev->dev);
181 return 0;
182}
183
184static struct platform_driver cq93vc_codec_driver = {
185 .driver = {
186 .name = "cq93vc-codec",
187 .owner = THIS_MODULE,
188 },
189
190 .probe = cq93vc_platform_probe,
191 .remove = cq93vc_platform_remove,
192};
193
194module_platform_driver(cq93vc_codec_driver);
195
196MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
197MODULE_AUTHOR("Miguel Aguilar");
198MODULE_LICENSE("GPL");
199
