2 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
4 * Copyright (C) 2010 Texas Instruments, Inc
6 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
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.
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.
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
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/init.h>
26 #include <linux/delay.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>
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>
43 #include <mach/dm365.h>
45 static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
48 struct davinci_vc *davinci_vc = codec->control_data;
50 return readl(davinci_vc->base + reg);
53 static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
56 struct davinci_vc *davinci_vc = codec->control_data;
58 writel(value, davinci_vc->base + reg);
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),
68 static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
70 struct snd_soc_codec *codec = dai->codec;
71 u8 reg = cq93vc_read(codec, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;
74 cq93vc_write(codec, DAVINCI_VC_REG09,
75 reg | DAVINCI_VC_REG09_MUTE);
77 cq93vc_write(codec, DAVINCI_VC_REG09, reg);
82 static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
83 int clk_id, unsigned int freq, int dir)
85 struct snd_soc_codec *codec = codec_dai->codec;
86 struct davinci_vc *davinci_vc = codec->control_data;
92 davinci_vc->cq93vc.sysclk = freq;
99 static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
100 enum snd_soc_bias_level level)
103 case SND_SOC_BIAS_ON:
104 cq93vc_write(codec, DAVINCI_VC_REG12,
105 DAVINCI_VC_REG12_POWER_ALL_ON);
107 case SND_SOC_BIAS_PREPARE:
109 case SND_SOC_BIAS_STANDBY:
110 cq93vc_write(codec, DAVINCI_VC_REG12,
111 DAVINCI_VC_REG12_POWER_ALL_OFF);
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);
119 codec->bias_level = level;
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)
127 static struct snd_soc_dai_ops cq93vc_dai_ops = {
128 .digital_mute = cq93vc_mute,
129 .set_sysclk = cq93vc_set_dai_sysclk,
132 static struct snd_soc_dai_driver cq93vc_dai = {
133 .name = "cq93vc-hifi",
135 .stream_name = "Playback",
138 .rates = CQ93VC_RATES,
139 .formats = CQ93VC_FORMATS,},
141 .stream_name = "Capture",
144 .rates = CQ93VC_RATES,
145 .formats = CQ93VC_FORMATS,},
146 .ops = &cq93vc_dai_ops,
149 static int cq93vc_resume(struct snd_soc_codec *codec)
151 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
156 static int cq93vc_probe(struct snd_soc_codec *codec)
158 struct davinci_vc *davinci_vc = codec->dev->platform_data;
160 davinci_vc->cq93vc.codec = codec;
161 codec->control_data = davinci_vc;
164 snd_soc_add_controls(codec, cq93vc_snd_controls,
165 ARRAY_SIZE(cq93vc_snd_controls));
167 /* Off, with power on */
168 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
173 static int cq93vc_remove(struct snd_soc_codec *codec)
175 cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
180 static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
182 .write = cq93vc_write,
183 .set_bias_level = cq93vc_set_bias_level,
184 .probe = cq93vc_probe,
185 .remove = cq93vc_remove,
186 .resume = cq93vc_resume,
189 static int cq93vc_platform_probe(struct platform_device *pdev)
191 return snd_soc_register_codec(&pdev->dev,
192 &soc_codec_dev_cq93vc, &cq93vc_dai, 1);
195 static int cq93vc_platform_remove(struct platform_device *pdev)
197 snd_soc_unregister_codec(&pdev->dev);
201 static struct platform_driver cq93vc_codec_driver = {
203 .name = "cq93vc-codec",
204 .owner = THIS_MODULE,
207 .probe = cq93vc_platform_probe,
208 .remove = __devexit_p(cq93vc_platform_remove),
211 static int __init cq93vc_init(void)
213 return platform_driver_register(&cq93vc_codec_driver);
215 module_init(cq93vc_init);
217 static void __exit cq93vc_exit(void)
219 platform_driver_unregister(&cq93vc_codec_driver);
221 module_exit(cq93vc_exit);
223 MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
224 MODULE_AUTHOR("Miguel Aguilar");
225 MODULE_LICENSE("GPL");