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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 | ||
41 | #include <mach/dm365.h> | |
42 | ||
b56e972b MA |
43 | static inline unsigned int cq93vc_read(struct snd_soc_codec *codec, |
44 | unsigned int reg) | |
45 | { | |
46 | struct davinci_vc *davinci_vc = codec->control_data; | |
47 | ||
48 | return readl(davinci_vc->base + reg); | |
49 | } | |
50 | ||
51 | static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg, | |
52 | unsigned int value) | |
53 | { | |
54 | struct davinci_vc *davinci_vc = codec->control_data; | |
55 | ||
56 | writel(value, davinci_vc->base + reg); | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static const struct snd_kcontrol_new cq93vc_snd_controls[] = { | |
62 | SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0), | |
63 | SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0), | |
64 | }; | |
65 | ||
66 | static int cq93vc_mute(struct snd_soc_dai *dai, int mute) | |
67 | { | |
68 | struct snd_soc_codec *codec = dai->codec; | |
69 | u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE; | |
70 | ||
71 | if (mute) | |
72 | cq93vc_write(codec, DAVINCI_VC_REG09, | |
73 | reg | DAVINCI_VC_REG09_MUTE); | |
74 | else | |
75 | cq93vc_write(codec, DAVINCI_VC_REG09, reg); | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
81 | int clk_id, unsigned int freq, int dir) | |
82 | { | |
83 | struct snd_soc_codec *codec = codec_dai->codec; | |
84 | struct davinci_vc *davinci_vc = codec->control_data; | |
85 | ||
86 | switch (freq) { | |
87 | case 22579200: | |
88 | case 27000000: | |
89 | case 33868800: | |
90 | davinci_vc->cq93vc.sysclk = freq; | |
91 | return 0; | |
92 | } | |
93 | ||
94 | return -EINVAL; | |
95 | } | |
96 | ||
97 | static int cq93vc_set_bias_level(struct snd_soc_codec *codec, | |
98 | enum snd_soc_bias_level level) | |
99 | { | |
100 | switch (level) { | |
101 | case SND_SOC_BIAS_ON: | |
102 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
103 | DAVINCI_VC_REG12_POWER_ALL_ON); | |
104 | break; | |
105 | case SND_SOC_BIAS_PREPARE: | |
106 | break; | |
107 | case SND_SOC_BIAS_STANDBY: | |
108 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
109 | DAVINCI_VC_REG12_POWER_ALL_OFF); | |
110 | break; | |
111 | case SND_SOC_BIAS_OFF: | |
112 | /* force all power off */ | |
113 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
114 | DAVINCI_VC_REG12_POWER_ALL_OFF); | |
115 | break; | |
116 | } | |
ce6120cc | 117 | codec->dapm.bias_level = level; |
b56e972b MA |
118 | |
119 | return 0; | |
120 | } | |
121 | ||
122 | #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) | |
123 | #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) | |
124 | ||
125 | static struct snd_soc_dai_ops cq93vc_dai_ops = { | |
126 | .digital_mute = cq93vc_mute, | |
127 | .set_sysclk = cq93vc_set_dai_sysclk, | |
128 | }; | |
129 | ||
f0fba2ad LG |
130 | static struct snd_soc_dai_driver cq93vc_dai = { |
131 | .name = "cq93vc-hifi", | |
b56e972b MA |
132 | .playback = { |
133 | .stream_name = "Playback", | |
134 | .channels_min = 1, | |
135 | .channels_max = 2, | |
136 | .rates = CQ93VC_RATES, | |
137 | .formats = CQ93VC_FORMATS,}, | |
138 | .capture = { | |
139 | .stream_name = "Capture", | |
140 | .channels_min = 1, | |
141 | .channels_max = 2, | |
142 | .rates = CQ93VC_RATES, | |
143 | .formats = CQ93VC_FORMATS,}, | |
144 | .ops = &cq93vc_dai_ops, | |
145 | }; | |
b56e972b | 146 | |
f0fba2ad | 147 | static int cq93vc_resume(struct snd_soc_codec *codec) |
b56e972b | 148 | { |
29e189c2 | 149 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
b56e972b MA |
150 | |
151 | return 0; | |
152 | } | |
153 | ||
f0fba2ad | 154 | static int cq93vc_probe(struct snd_soc_codec *codec) |
b56e972b | 155 | { |
0fa63b69 | 156 | struct davinci_vc *davinci_vc = snd_soc_codec_get_drvdata(codec); |
f0fba2ad LG |
157 | |
158 | davinci_vc->cq93vc.codec = codec; | |
159 | codec->control_data = davinci_vc; | |
b56e972b MA |
160 | |
161 | /* Set controls */ | |
162 | snd_soc_add_controls(codec, cq93vc_snd_controls, | |
163 | ARRAY_SIZE(cq93vc_snd_controls)); | |
164 | ||
165 | /* Off, with power on */ | |
166 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
f0fba2ad | 171 | static int cq93vc_remove(struct snd_soc_codec *codec) |
b56e972b | 172 | { |
f0fba2ad | 173 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF); |
b56e972b MA |
174 | |
175 | return 0; | |
176 | } | |
177 | ||
f0fba2ad LG |
178 | static struct snd_soc_codec_driver soc_codec_dev_cq93vc = { |
179 | .read = cq93vc_read, | |
180 | .write = cq93vc_write, | |
181 | .set_bias_level = cq93vc_set_bias_level, | |
b56e972b MA |
182 | .probe = cq93vc_probe, |
183 | .remove = cq93vc_remove, | |
184 | .resume = cq93vc_resume, | |
185 | }; | |
b56e972b | 186 | |
f0fba2ad | 187 | static int cq93vc_platform_probe(struct platform_device *pdev) |
b56e972b | 188 | { |
f0fba2ad LG |
189 | return snd_soc_register_codec(&pdev->dev, |
190 | &soc_codec_dev_cq93vc, &cq93vc_dai, 1); | |
b56e972b MA |
191 | } |
192 | ||
f0fba2ad | 193 | static int cq93vc_platform_remove(struct platform_device *pdev) |
b56e972b | 194 | { |
f0fba2ad | 195 | snd_soc_unregister_codec(&pdev->dev); |
b56e972b MA |
196 | return 0; |
197 | } | |
198 | ||
199 | static struct platform_driver cq93vc_codec_driver = { | |
200 | .driver = { | |
f0fba2ad LG |
201 | .name = "cq93vc-codec", |
202 | .owner = THIS_MODULE, | |
203 | }, | |
204 | ||
205 | .probe = cq93vc_platform_probe, | |
206 | .remove = __devexit_p(cq93vc_platform_remove), | |
b56e972b MA |
207 | }; |
208 | ||
f0fba2ad | 209 | static int __init cq93vc_init(void) |
b56e972b | 210 | { |
f0fba2ad | 211 | return platform_driver_register(&cq93vc_codec_driver); |
b56e972b MA |
212 | } |
213 | module_init(cq93vc_init); | |
214 | ||
f0fba2ad | 215 | static void __exit cq93vc_exit(void) |
b56e972b MA |
216 | { |
217 | platform_driver_unregister(&cq93vc_codec_driver); | |
218 | } | |
219 | module_exit(cq93vc_exit); | |
220 | ||
221 | MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); | |
222 | MODULE_AUTHOR("Miguel Aguilar"); | |
223 | MODULE_LICENSE("GPL"); |