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/initval.h>
41 static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
44 struct davinci_vc *davinci_vc = codec->control_data;
46 return readl(davinci_vc->base + reg);
49 static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
52 struct davinci_vc *davinci_vc = codec->control_data;
54 writel(value, davinci_vc->base + reg);
59 static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
60 SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
61 SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
64 static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
66 struct snd_soc_codec *codec = dai->codec;
70 reg = DAVINCI_VC_REG09_MUTE;
74 snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
80 static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
81 int clk_id, unsigned int freq, int dir)
83 struct snd_soc_codec *codec = codec_dai->codec;
84 struct davinci_vc *davinci_vc = codec->dev->platform_data;
90 davinci_vc->cq93vc.sysclk = freq;
97 static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
98 enum snd_soc_bias_level level)
101 case SND_SOC_BIAS_ON:
102 snd_soc_write(codec, DAVINCI_VC_REG12,
103 DAVINCI_VC_REG12_POWER_ALL_ON);
105 case SND_SOC_BIAS_PREPARE:
107 case SND_SOC_BIAS_STANDBY:
108 snd_soc_write(codec, DAVINCI_VC_REG12,
109 DAVINCI_VC_REG12_POWER_ALL_OFF);
111 case SND_SOC_BIAS_OFF:
112 /* force all power off */
113 snd_soc_write(codec, DAVINCI_VC_REG12,
114 DAVINCI_VC_REG12_POWER_ALL_OFF);
117 codec->dapm.bias_level = level;
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)
125 static const struct snd_soc_dai_ops cq93vc_dai_ops = {
126 .digital_mute = cq93vc_mute,
127 .set_sysclk = cq93vc_set_dai_sysclk,
130 static struct snd_soc_dai_driver cq93vc_dai = {
131 .name = "cq93vc-hifi",
133 .stream_name = "Playback",
136 .rates = CQ93VC_RATES,
137 .formats = CQ93VC_FORMATS,},
139 .stream_name = "Capture",
142 .rates = CQ93VC_RATES,
143 .formats = CQ93VC_FORMATS,},
144 .ops = &cq93vc_dai_ops,
147 static int cq93vc_resume(struct snd_soc_codec *codec)
149 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
154 static int cq93vc_probe(struct snd_soc_codec *codec)
156 struct davinci_vc *davinci_vc = codec->dev->platform_data;
158 davinci_vc->cq93vc.codec = codec;
159 codec->control_data = davinci_vc;
161 /* Off, with power on */
162 cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
167 static int cq93vc_remove(struct snd_soc_codec *codec)
169 cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
174 static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
176 .write = cq93vc_write,
177 .set_bias_level = cq93vc_set_bias_level,
178 .probe = cq93vc_probe,
179 .remove = cq93vc_remove,
180 .resume = cq93vc_resume,
181 .controls = cq93vc_snd_controls,
182 .num_controls = ARRAY_SIZE(cq93vc_snd_controls),
185 static int cq93vc_platform_probe(struct platform_device *pdev)
187 return snd_soc_register_codec(&pdev->dev,
188 &soc_codec_dev_cq93vc, &cq93vc_dai, 1);
191 static int cq93vc_platform_remove(struct platform_device *pdev)
193 snd_soc_unregister_codec(&pdev->dev);
197 static struct platform_driver cq93vc_codec_driver = {
199 .name = "cq93vc-codec",
200 .owner = THIS_MODULE,
203 .probe = cq93vc_platform_probe,
204 .remove = cq93vc_platform_remove,
207 module_platform_driver(cq93vc_codec_driver);
209 MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
210 MODULE_AUTHOR("Miguel Aguilar");
211 MODULE_LICENSE("GPL");