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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> | |
33 | ||
34 | #include <sound/core.h> | |
35 | #include <sound/pcm.h> | |
36 | #include <sound/pcm_params.h> | |
37 | #include <sound/soc.h> | |
38 | #include <sound/soc-dai.h> | |
39 | #include <sound/soc-dapm.h> | |
40 | #include <sound/initval.h> | |
41 | ||
42 | #include <mach/dm365.h> | |
43 | ||
44 | #include "cq93vc.h" | |
45 | ||
46 | static inline unsigned int cq93vc_read(struct snd_soc_codec *codec, | |
47 | unsigned int reg) | |
48 | { | |
49 | struct davinci_vc *davinci_vc = codec->control_data; | |
50 | ||
51 | return readl(davinci_vc->base + reg); | |
52 | } | |
53 | ||
54 | static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg, | |
55 | unsigned int value) | |
56 | { | |
57 | struct davinci_vc *davinci_vc = codec->control_data; | |
58 | ||
59 | writel(value, davinci_vc->base + reg); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | static const struct snd_kcontrol_new cq93vc_snd_controls[] = { | |
65 | SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0), | |
66 | SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0), | |
67 | }; | |
68 | ||
69 | static int cq93vc_mute(struct snd_soc_dai *dai, int mute) | |
70 | { | |
71 | struct snd_soc_codec *codec = dai->codec; | |
72 | u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE; | |
73 | ||
74 | if (mute) | |
75 | cq93vc_write(codec, DAVINCI_VC_REG09, | |
76 | reg | DAVINCI_VC_REG09_MUTE); | |
77 | else | |
78 | cq93vc_write(codec, DAVINCI_VC_REG09, reg); | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
83 | static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
84 | int clk_id, unsigned int freq, int dir) | |
85 | { | |
86 | struct snd_soc_codec *codec = codec_dai->codec; | |
87 | struct davinci_vc *davinci_vc = codec->control_data; | |
88 | ||
89 | switch (freq) { | |
90 | case 22579200: | |
91 | case 27000000: | |
92 | case 33868800: | |
93 | davinci_vc->cq93vc.sysclk = freq; | |
94 | return 0; | |
95 | } | |
96 | ||
97 | return -EINVAL; | |
98 | } | |
99 | ||
100 | static int cq93vc_set_bias_level(struct snd_soc_codec *codec, | |
101 | enum snd_soc_bias_level level) | |
102 | { | |
103 | switch (level) { | |
104 | case SND_SOC_BIAS_ON: | |
105 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
106 | DAVINCI_VC_REG12_POWER_ALL_ON); | |
107 | break; | |
108 | case SND_SOC_BIAS_PREPARE: | |
109 | break; | |
110 | case SND_SOC_BIAS_STANDBY: | |
111 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
112 | DAVINCI_VC_REG12_POWER_ALL_OFF); | |
113 | break; | |
114 | case SND_SOC_BIAS_OFF: | |
115 | /* force all power off */ | |
116 | cq93vc_write(codec, DAVINCI_VC_REG12, | |
117 | DAVINCI_VC_REG12_POWER_ALL_OFF); | |
118 | break; | |
119 | } | |
120 | codec->bias_level = level; | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) | |
126 | #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) | |
127 | ||
128 | static struct snd_soc_dai_ops cq93vc_dai_ops = { | |
129 | .digital_mute = cq93vc_mute, | |
130 | .set_sysclk = cq93vc_set_dai_sysclk, | |
131 | }; | |
132 | ||
133 | struct snd_soc_dai cq93vc_dai = { | |
134 | .name = "CQ93VC", | |
135 | .playback = { | |
136 | .stream_name = "Playback", | |
137 | .channels_min = 1, | |
138 | .channels_max = 2, | |
139 | .rates = CQ93VC_RATES, | |
140 | .formats = CQ93VC_FORMATS,}, | |
141 | .capture = { | |
142 | .stream_name = "Capture", | |
143 | .channels_min = 1, | |
144 | .channels_max = 2, | |
145 | .rates = CQ93VC_RATES, | |
146 | .formats = CQ93VC_FORMATS,}, | |
147 | .ops = &cq93vc_dai_ops, | |
148 | }; | |
149 | EXPORT_SYMBOL_GPL(cq93vc_dai); | |
150 | ||
151 | static int cq93vc_resume(struct platform_device *pdev) | |
152 | { | |
153 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
154 | struct snd_soc_codec *codec = socdev->card->codec; | |
155 | ||
29e189c2 | 156 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
b56e972b MA |
157 | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static struct snd_soc_codec *cq93vc_codec; | |
162 | ||
163 | static int cq93vc_probe(struct platform_device *pdev) | |
164 | { | |
165 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
166 | struct device *dev = &pdev->dev; | |
167 | struct snd_soc_codec *codec; | |
168 | int ret; | |
169 | ||
170 | socdev->card->codec = cq93vc_codec; | |
171 | codec = socdev->card->codec; | |
172 | ||
173 | /* Register pcms */ | |
174 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
175 | if (ret < 0) { | |
176 | dev_err(dev, "%s: failed to create pcms\n", pdev->name); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | /* Set controls */ | |
181 | snd_soc_add_controls(codec, cq93vc_snd_controls, | |
182 | ARRAY_SIZE(cq93vc_snd_controls)); | |
183 | ||
184 | /* Off, with power on */ | |
185 | cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int cq93vc_remove(struct platform_device *pdev) | |
191 | { | |
192 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
193 | ||
194 | snd_soc_free_pcms(socdev); | |
195 | snd_soc_dapm_free(socdev); | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | struct snd_soc_codec_device soc_codec_dev_cq93vc = { | |
201 | .probe = cq93vc_probe, | |
202 | .remove = cq93vc_remove, | |
203 | .resume = cq93vc_resume, | |
204 | }; | |
205 | EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc); | |
206 | ||
207 | static __init int cq93vc_codec_probe(struct platform_device *pdev) | |
208 | { | |
209 | struct davinci_vc *davinci_vc = platform_get_drvdata(pdev); | |
210 | struct snd_soc_codec *codec; | |
211 | int ret; | |
212 | ||
213 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
214 | if (codec == NULL) { | |
215 | dev_dbg(davinci_vc->dev, | |
216 | "could not allocate memory for codec data\n"); | |
217 | return -ENOMEM; | |
218 | } | |
219 | ||
220 | davinci_vc->cq93vc.codec = codec; | |
221 | ||
222 | cq93vc_dai.dev = &pdev->dev; | |
223 | ||
224 | mutex_init(&codec->mutex); | |
225 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
226 | INIT_LIST_HEAD(&codec->dapm_paths); | |
227 | codec->dev = &pdev->dev; | |
228 | codec->name = "CQ93VC"; | |
229 | codec->owner = THIS_MODULE; | |
230 | codec->read = cq93vc_read; | |
231 | codec->write = cq93vc_write; | |
232 | codec->set_bias_level = cq93vc_set_bias_level; | |
233 | codec->dai = &cq93vc_dai; | |
234 | codec->num_dai = 1; | |
235 | codec->control_data = davinci_vc; | |
236 | ||
237 | cq93vc_codec = codec; | |
238 | ||
239 | ret = snd_soc_register_codec(codec); | |
240 | if (ret) { | |
241 | dev_err(davinci_vc->dev, "failed to register codec\n"); | |
242 | goto fail1; | |
243 | } | |
244 | ||
245 | ret = snd_soc_register_dai(&cq93vc_dai); | |
246 | if (ret) { | |
247 | dev_err(davinci_vc->dev, "could register dai\n"); | |
248 | goto fail2; | |
249 | } | |
250 | return 0; | |
251 | ||
252 | fail2: | |
253 | snd_soc_unregister_codec(codec); | |
254 | ||
255 | fail1: | |
256 | kfree(codec); | |
257 | cq93vc_codec = NULL; | |
258 | ||
259 | return ret; | |
260 | } | |
261 | ||
262 | static int __devexit cq93vc_codec_remove(struct platform_device *pdev) | |
263 | { | |
264 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
265 | struct snd_soc_codec *codec = socdev->card->codec; | |
266 | ||
267 | snd_soc_unregister_dai(&cq93vc_dai); | |
268 | snd_soc_unregister_codec(&codec); | |
269 | ||
270 | kfree(codec); | |
271 | cq93vc_codec = NULL; | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | static struct platform_driver cq93vc_codec_driver = { | |
277 | .driver = { | |
278 | .name = "cq93vc", | |
279 | .owner = THIS_MODULE, | |
280 | }, | |
281 | .probe = cq93vc_codec_probe, | |
282 | .remove = __devexit_p(cq93vc_codec_remove), | |
283 | }; | |
284 | ||
285 | static __init int cq93vc_init(void) | |
286 | { | |
287 | return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe); | |
288 | } | |
289 | module_init(cq93vc_init); | |
290 | ||
291 | static __exit void cq93vc_exit(void) | |
292 | { | |
293 | platform_driver_unregister(&cq93vc_codec_driver); | |
294 | } | |
295 | module_exit(cq93vc_exit); | |
296 | ||
297 | MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); | |
298 | MODULE_AUTHOR("Miguel Aguilar"); | |
299 | MODULE_LICENSE("GPL"); |