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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms4 *5 * Copyright (C) 2010 Texas Instruments, Inc6 *7 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>8 */9#include <linux/module.h>10#include <linux/moduleparam.h>11#include <linux/init.h>12#include <linux/io.h>13#include <linux/delay.h>14#include <linux/pm.h>15#include <linux/platform_device.h>16#include <linux/device.h>17#include <linux/slab.h>18#include <linux/clk.h>19#include <linux/mfd/davinci_voicecodec.h>20#include <linux/spi/spi.h>21 22#include <sound/core.h>23#include <sound/pcm.h>24#include <sound/pcm_params.h>25#include <sound/soc.h>26#include <sound/initval.h>27 28static const struct snd_kcontrol_new cq93vc_snd_controls[] = {29 SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),30 SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_VC_REG09, 0, 0x3f, 0),31};32 33static int cq93vc_mute(struct snd_soc_dai *dai, int mute, int direction)34{35 struct snd_soc_component *component = dai->component;36 u8 reg;37 38 if (mute)39 reg = DAVINCI_VC_REG09_MUTE;40 else41 reg = 0;42 43 snd_soc_component_update_bits(component, DAVINCI_VC_REG09, DAVINCI_VC_REG09_MUTE,44 reg);45 46 return 0;47}48 49static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,50 int clk_id, unsigned int freq, int dir)51{52 switch (freq) {53 case 22579200:54 case 27000000:55 case 33868800:56 return 0;57 }58 59 return -EINVAL;60}61 62static int cq93vc_set_bias_level(struct snd_soc_component *component,63 enum snd_soc_bias_level level)64{65 switch (level) {66 case SND_SOC_BIAS_ON:67 snd_soc_component_write(component, DAVINCI_VC_REG12,68 DAVINCI_VC_REG12_POWER_ALL_ON);69 break;70 case SND_SOC_BIAS_PREPARE:71 break;72 case SND_SOC_BIAS_STANDBY:73 snd_soc_component_write(component, DAVINCI_VC_REG12,74 DAVINCI_VC_REG12_POWER_ALL_OFF);75 break;76 case SND_SOC_BIAS_OFF:77 /* force all power off */78 snd_soc_component_write(component, DAVINCI_VC_REG12,79 DAVINCI_VC_REG12_POWER_ALL_OFF);80 break;81 }82 83 return 0;84}85 86#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)87#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)88 89static const struct snd_soc_dai_ops cq93vc_dai_ops = {90 .mute_stream = cq93vc_mute,91 .set_sysclk = cq93vc_set_dai_sysclk,92 .no_capture_mute = 1,93};94 95static struct snd_soc_dai_driver cq93vc_dai = {96 .name = "cq93vc-hifi",97 .playback = {98 .stream_name = "Playback",99 .channels_min = 1,100 .channels_max = 2,101 .rates = CQ93VC_RATES,102 .formats = CQ93VC_FORMATS,},103 .capture = {104 .stream_name = "Capture",105 .channels_min = 1,106 .channels_max = 2,107 .rates = CQ93VC_RATES,108 .formats = CQ93VC_FORMATS,},109 .ops = &cq93vc_dai_ops,110};111 112static int cq93vc_probe(struct snd_soc_component *component)113{114 struct davinci_vc *davinci_vc = component->dev->platform_data;115 116 snd_soc_component_init_regmap(component, davinci_vc->regmap);117 118 return 0;119}120 121static const struct snd_soc_component_driver soc_component_dev_cq93vc = {122 .set_bias_level = cq93vc_set_bias_level,123 .probe = cq93vc_probe,124 .controls = cq93vc_snd_controls,125 .num_controls = ARRAY_SIZE(cq93vc_snd_controls),126 .idle_bias_on = 1,127 .use_pmdown_time = 1,128 .endianness = 1,129};130 131static int cq93vc_platform_probe(struct platform_device *pdev)132{133 return devm_snd_soc_register_component(&pdev->dev,134 &soc_component_dev_cq93vc, &cq93vc_dai, 1);135}136 137static struct platform_driver cq93vc_codec_driver = {138 .driver = {139 .name = "cq93vc-codec",140 },141 142 .probe = cq93vc_platform_probe,143};144 145module_platform_driver(cq93vc_codec_driver);146 147MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");148MODULE_AUTHOR("Miguel Aguilar");149MODULE_LICENSE("GPL");150