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