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b56e972b MA |
1 | /* |
2 | * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms | |
3 | * | |
4 | * Copyright (C) 2010 Texas Instruments, Inc | |
5 | * | |
6 | * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
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> | |
923a0042 | 30 | #include <linux/slab.h> |
b56e972b MA |
31 | #include <linux/clk.h> |
32 | #include <linux/mfd/davinci_voicecodec.h> | |
f0fba2ad | 33 | #include <linux/spi/spi.h> |
b56e972b MA |
34 | |
35 | #include <sound/core.h> | |
36 | #include <sound/pcm.h> | |
37 | #include <sound/pcm_params.h> | |
38 | #include <sound/soc.h> | |
b56e972b MA |
39 | #include <sound/initval.h> |
40 | ||
b56e972b MA |
41 | static 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 | ||
46 | static int cq93vc_mute(struct snd_soc_dai *dai, int mute) | |
47 | { | |
48 | struct snd_soc_codec *codec = dai->codec; | |
1201939a | 49 | u8 reg; |
b56e972b MA |
50 | |
51 | if (mute) | |
1201939a | 52 | reg = DAVINCI_VC_REG09_MUTE; |
b56e972b | 53 | else |
1201939a MB |
54 | reg = 0; |
55 | ||
56 | snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE, | |
57 | reg); | |
b56e972b MA |
58 | |
59 | return 0; | |
60 | } | |
61 | ||
62 | static 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; | |
8ecb5344 | 66 | struct davinci_vc *davinci_vc = codec->dev->platform_data; |
b56e972b MA |
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 | ||
79 | static 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: | |
1201939a | 84 | snd_soc_write(codec, DAVINCI_VC_REG12, |
b56e972b MA |
85 | DAVINCI_VC_REG12_POWER_ALL_ON); |
86 | break; | |
87 | case SND_SOC_BIAS_PREPARE: | |
88 | break; | |
89 | case SND_SOC_BIAS_STANDBY: | |
1201939a | 90 | snd_soc_write(codec, DAVINCI_VC_REG12, |
b56e972b MA |
91 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
92 | break; | |
93 | case SND_SOC_BIAS_OFF: | |
94 | /* force all power off */ | |
1201939a | 95 | snd_soc_write(codec, DAVINCI_VC_REG12, |
b56e972b MA |
96 | DAVINCI_VC_REG12_POWER_ALL_OFF); |
97 | break; | |
98 | } | |
ce6120cc | 99 | codec->dapm.bias_level = level; |
b56e972b MA |
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 | ||
85e7652d | 107 | static const struct snd_soc_dai_ops cq93vc_dai_ops = { |
b56e972b MA |
108 | .digital_mute = cq93vc_mute, |
109 | .set_sysclk = cq93vc_set_dai_sysclk, | |
110 | }; | |
111 | ||
f0fba2ad LG |
112 | static struct snd_soc_dai_driver cq93vc_dai = { |
113 | .name = "cq93vc-hifi", | |
b56e972b MA |
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 | }; | |
b56e972b | 128 | |
f0fba2ad | 129 | static int cq93vc_resume(struct snd_soc_codec *codec) |
b56e972b | 130 | { |
29e189c2 | 131 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
b56e972b MA |
132 | |
133 | return 0; | |
134 | } | |
135 | ||
f0fba2ad | 136 | static int cq93vc_probe(struct snd_soc_codec *codec) |
b56e972b | 137 | { |
cb5811cf | 138 | struct davinci_vc *davinci_vc = codec->dev->platform_data; |
f0fba2ad LG |
139 | |
140 | davinci_vc->cq93vc.codec = codec; | |
d33c3335 MB |
141 | codec->control_data = davinci_vc->regmap; |
142 | ||
143 | snd_soc_codec_set_cache_io(codec, 32, 32, SND_SOC_REGMAP); | |
b56e972b | 144 | |
b56e972b MA |
145 | /* Off, with power on */ |
146 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
f0fba2ad | 151 | static int cq93vc_remove(struct snd_soc_codec *codec) |
b56e972b | 152 | { |
f0fba2ad | 153 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF); |
b56e972b MA |
154 | |
155 | return 0; | |
156 | } | |
157 | ||
f0fba2ad | 158 | static struct snd_soc_codec_driver soc_codec_dev_cq93vc = { |
f0fba2ad | 159 | .set_bias_level = cq93vc_set_bias_level, |
b56e972b MA |
160 | .probe = cq93vc_probe, |
161 | .remove = cq93vc_remove, | |
162 | .resume = cq93vc_resume, | |
6f88063c MB |
163 | .controls = cq93vc_snd_controls, |
164 | .num_controls = ARRAY_SIZE(cq93vc_snd_controls), | |
b56e972b | 165 | }; |
b56e972b | 166 | |
f0fba2ad | 167 | static int cq93vc_platform_probe(struct platform_device *pdev) |
b56e972b | 168 | { |
f0fba2ad LG |
169 | return snd_soc_register_codec(&pdev->dev, |
170 | &soc_codec_dev_cq93vc, &cq93vc_dai, 1); | |
b56e972b MA |
171 | } |
172 | ||
f0fba2ad | 173 | static int cq93vc_platform_remove(struct platform_device *pdev) |
b56e972b | 174 | { |
f0fba2ad | 175 | snd_soc_unregister_codec(&pdev->dev); |
b56e972b MA |
176 | return 0; |
177 | } | |
178 | ||
179 | static struct platform_driver cq93vc_codec_driver = { | |
180 | .driver = { | |
f0fba2ad LG |
181 | .name = "cq93vc-codec", |
182 | .owner = THIS_MODULE, | |
183 | }, | |
184 | ||
185 | .probe = cq93vc_platform_probe, | |
7a79e94e | 186 | .remove = cq93vc_platform_remove, |
b56e972b MA |
187 | }; |
188 | ||
5bbcc3c0 | 189 | module_platform_driver(cq93vc_codec_driver); |
b56e972b MA |
190 | |
191 | MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); | |
192 | MODULE_AUTHOR("Miguel Aguilar"); | |
193 | MODULE_LICENSE("GPL"); |