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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * osk5912.c -- SoC audio for OSK 59124 *5 * Copyright (C) 2008 Mistral Solutions6 *7 * Contact: Arun KS <arunks@mistralsolutions.com>8 */9 10#include <linux/clk.h>11#include <linux/platform_device.h>12#include <sound/core.h>13#include <sound/pcm.h>14#include <sound/soc.h>15 16#include <asm/mach-types.h>17#include <linux/module.h>18#include <linux/platform_data/asoc-ti-mcbsp.h>19 20#include "omap-mcbsp.h"21#include "../codecs/tlv320aic23.h"22 23#define CODEC_CLOCK 1200000024 25static struct clk *tlv320aic23_mclk;26 27static int osk_startup(struct snd_pcm_substream *substream)28{29 return clk_prepare_enable(tlv320aic23_mclk);30}31 32static void osk_shutdown(struct snd_pcm_substream *substream)33{34 clk_disable_unprepare(tlv320aic23_mclk);35}36 37static int osk_hw_params(struct snd_pcm_substream *substream,38 struct snd_pcm_hw_params *params)39{40 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);41 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);42 int err;43 44 /* Set the codec system clock for DAC and ADC */45 err =46 snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);47 48 if (err < 0) {49 printk(KERN_ERR "can't set codec system clock\n");50 return err;51 }52 53 return err;54}55 56static const struct snd_soc_ops osk_ops = {57 .startup = osk_startup,58 .hw_params = osk_hw_params,59 .shutdown = osk_shutdown,60};61 62static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {63 SND_SOC_DAPM_HP("Headphone Jack", NULL),64 SND_SOC_DAPM_LINE("Line In", NULL),65 SND_SOC_DAPM_MIC("Mic Jack", NULL),66};67 68static const struct snd_soc_dapm_route audio_map[] = {69 {"Headphone Jack", NULL, "LHPOUT"},70 {"Headphone Jack", NULL, "RHPOUT"},71 72 {"LLINEIN", NULL, "Line In"},73 {"RLINEIN", NULL, "Line In"},74 75 {"MICIN", NULL, "Mic Jack"},76};77 78/* Digital audio interface glue - connects codec <--> CPU */79SND_SOC_DAILINK_DEFS(aic23,80 DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.1")),81 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec",82 "tlv320aic23-hifi")),83 DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.1")));84 85static struct snd_soc_dai_link osk_dai = {86 .name = "TLV320AIC23",87 .stream_name = "AIC23",88 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |89 SND_SOC_DAIFMT_CBM_CFM,90 .ops = &osk_ops,91 SND_SOC_DAILINK_REG(aic23),92};93 94/* Audio machine driver */95static struct snd_soc_card snd_soc_card_osk = {96 .name = "OSK5912",97 .owner = THIS_MODULE,98 .dai_link = &osk_dai,99 .num_links = 1,100 101 .dapm_widgets = tlv320aic23_dapm_widgets,102 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),103 .dapm_routes = audio_map,104 .num_dapm_routes = ARRAY_SIZE(audio_map),105};106 107static struct platform_device *osk_snd_device;108 109static int __init osk_soc_init(void)110{111 int err;112 u32 curRate;113 struct device *dev;114 115 if (!(machine_is_omap_osk()))116 return -ENODEV;117 118 osk_snd_device = platform_device_alloc("soc-audio", -1);119 if (!osk_snd_device)120 return -ENOMEM;121 122 platform_set_drvdata(osk_snd_device, &snd_soc_card_osk);123 err = platform_device_add(osk_snd_device);124 if (err)125 goto err1;126 127 dev = &osk_snd_device->dev;128 129 tlv320aic23_mclk = clk_get(dev, "mclk");130 if (IS_ERR(tlv320aic23_mclk)) {131 printk(KERN_ERR "Could not get mclk clock\n");132 err = PTR_ERR(tlv320aic23_mclk);133 goto err2;134 }135 136 /*137 * Configure 12 MHz output on MCLK.138 */139 curRate = (uint) clk_get_rate(tlv320aic23_mclk);140 if (curRate != CODEC_CLOCK) {141 if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) {142 printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n");143 err = -ECANCELED;144 goto err3;145 }146 }147 148 printk(KERN_INFO "MCLK = %d [%d]\n",149 (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK);150 151 return 0;152 153err3:154 clk_put(tlv320aic23_mclk);155err2:156 platform_device_del(osk_snd_device);157err1:158 platform_device_put(osk_snd_device);159 160 return err;161 162}163 164static void __exit osk_soc_exit(void)165{166 clk_put(tlv320aic23_mclk);167 platform_device_unregister(osk_snd_device);168}169 170module_init(osk_soc_init);171module_exit(osk_soc_exit);172 173MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");174MODULE_DESCRIPTION("ALSA SoC OSK 5912");175MODULE_LICENSE("GPL");176