/* * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms * * Copyright (C) 2010 Texas Instruments, Inc * * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/platform_device.h> #include <linux/device.h> #include <linux/slab.h> #include <linux/clk.h> #include <linux/mfd/davinci_voicecodec.h> #include <linux/spi/spi.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/initval.h> static const struct snd_kcontrol_new cq93vc_snd_controls[] = { SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0), SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0), }; static int cq93vc_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; u8 reg; if (mute) reg = DAVINCI_VC_REG09_MUTE; else reg = 0; snd_soc_update_bits(codec, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE, reg); return 0; } static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; struct davinci_vc *davinci_vc = codec->dev->platform_data; switch (freq) { case 22579200: case 27000000: case 33868800: davinci_vc->cq93vc.sysclk = freq; return 0; } return -EINVAL; } static int cq93vc_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { switch (level) { case SND_SOC_BIAS_ON: snd_soc_write(codec, DAVINCI_VC_REG12, DAVINCI_VC_REG12_POWER_ALL_ON); break; case SND_SOC_BIAS_PREPARE: break; case SND_SOC_BIAS_STANDBY: snd_soc_write(codec, DAVINCI_VC_REG12, DAVINCI_VC_REG12_POWER_ALL_OFF); break; case SND_SOC_BIAS_OFF: /* force all power off */ snd_soc_write(codec, DAVINCI_VC_REG12, DAVINCI_VC_REG12_POWER_ALL_OFF); break; } codec->dapm.bias_level = level; return 0; } #define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) #define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) static const struct snd_soc_dai_ops cq93vc_dai_ops = { .digital_mute = cq93vc_mute, .set_sysclk = cq93vc_set_dai_sysclk, }; static struct snd_soc_dai_driver cq93vc_dai = { .name = "cq93vc-hifi", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 2, .rates = CQ93VC_RATES, .formats = CQ93VC_FORMATS,}, .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = CQ93VC_RATES, .formats = CQ93VC_FORMATS,}, .ops = &cq93vc_dai_ops, }; static int cq93vc_resume(struct snd_soc_codec *codec) { cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; } static int cq93vc_probe(struct snd_soc_codec *codec) { struct davinci_vc *davinci_vc = codec->dev->platform_data; davinci_vc->cq93vc.codec = codec; /* Off, with power on */ cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; } static int cq93vc_remove(struct snd_soc_codec *codec) { cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static struct regmap *cq93vc_get_regmap(struct device *dev) { struct davinci_vc *davinci_vc = dev->platform_data; return davinci_vc->regmap; } static struct snd_soc_codec_driver soc_codec_dev_cq93vc = { .set_bias_level = cq93vc_set_bias_level, .probe = cq93vc_probe, .remove = cq93vc_remove, .resume = cq93vc_resume, .get_regmap = cq93vc_get_regmap, .controls = cq93vc_snd_controls, .num_controls = ARRAY_SIZE(cq93vc_snd_controls), }; static int cq93vc_platform_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_cq93vc, &cq93vc_dai, 1); } static int cq93vc_platform_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver cq93vc_codec_driver = { .driver = { .name = "cq93vc-codec", .owner = THIS_MODULE, }, .probe = cq93vc_platform_probe, .remove = cq93vc_platform_remove, }; module_platform_driver(cq93vc_codec_driver); MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); MODULE_AUTHOR("Miguel Aguilar"); MODULE_LICENSE("GPL");