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6200b75a8b
Remove the manual transition back to SND_SOC_BIAS_STANDBY in resume. This is already be automatically handled by the ASoC core. Since the ASoC core now takes care of setting the bias level to SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually anymore either. The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe() can also be removed as the core will automatically do this after the CODEC has been probed. While we are at it also remove the unused codec field from the cq93vc struct so the whole probe function can be removed. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
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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codec->dapm.bias_level = level;
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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 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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.controls = cq93vc_snd_controls,
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.num_controls = ARRAY_SIZE(cq93vc_snd_controls),
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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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.owner = THIS_MODULE,
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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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