166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/*
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* ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
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*
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* Copyright (C) 2010 Texas Instruments, Inc
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*
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* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/mfd/davinci_voicecodec.h>
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#include <linux/spi/spi.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
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SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
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SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),
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};
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static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
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{
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struct snd_soc_codec *codec = dai->codec;
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u8 reg;
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if (mute)
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reg = DAVINCI_VC_REG09_MUTE;
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else
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reg = 0;
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snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,
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reg);
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return 0;
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}
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static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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switch (freq) {
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case 22579200:
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case 27000000:
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case 33868800:
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return 0;
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}
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return -EINVAL;
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}
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static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
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enum snd_soc_bias_level level)
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{
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switch (level) {
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case SND_SOC_BIAS_ON:
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snd_soc_write(codec, DAVINCI_VC_REG12,
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DAVINCI_VC_REG12_POWER_ALL_ON);
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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snd_soc_write(codec, DAVINCI_VC_REG12,
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DAVINCI_VC_REG12_POWER_ALL_OFF);
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break;
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case SND_SOC_BIAS_OFF:
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/* force all power off */
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snd_soc_write(codec, DAVINCI_VC_REG12,
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DAVINCI_VC_REG12_POWER_ALL_OFF);
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break;
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}
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return 0;
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}
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#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
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#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
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static const struct snd_soc_dai_ops cq93vc_dai_ops = {
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.digital_mute = cq93vc_mute,
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.set_sysclk = cq93vc_set_dai_sysclk,
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};
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static struct snd_soc_dai_driver cq93vc_dai = {
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.name = "cq93vc-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = CQ93VC_RATES,
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.formats = CQ93VC_FORMATS,},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = CQ93VC_RATES,
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.formats = CQ93VC_FORMATS,},
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.ops = &cq93vc_dai_ops,
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};
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static struct regmap *cq93vc_get_regmap(struct device *dev)
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{
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struct davinci_vc *davinci_vc = dev->platform_data;
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return davinci_vc->regmap;
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}
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static const struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
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.set_bias_level = cq93vc_set_bias_level,
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.get_regmap = cq93vc_get_regmap,
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.component_driver = {
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.controls = cq93vc_snd_controls,
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.num_controls = ARRAY_SIZE(cq93vc_snd_controls),
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},
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};
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static int cq93vc_platform_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_cq93vc, &cq93vc_dai, 1);
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}
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static int cq93vc_platform_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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static struct platform_driver cq93vc_codec_driver = {
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.driver = {
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.name = "cq93vc-codec",
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},
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.probe = cq93vc_platform_probe,
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.remove = cq93vc_platform_remove,
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};
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module_platform_driver(cq93vc_codec_driver);
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MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
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MODULE_AUTHOR("Miguel Aguilar");
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MODULE_LICENSE("GPL");
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