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1// SPDX-License-Identifier: GPL-2.0+2//3// Copyright (c) 2014, Insignal Co., Ltd.4//5// Author: Claude <claude@insginal.co.kr>6 7#include <linux/module.h>8#include <linux/of.h>9#include <linux/platform_device.h>10#include <linux/clk.h>11 12#include <sound/soc.h>13#include <sound/soc-dapm.h>14#include <sound/pcm.h>15#include <sound/pcm_params.h>16 17#include "../codecs/wm8994.h"18#include "i2s.h"19 20static int arndale_rt5631_hw_params(struct snd_pcm_substream *substream,21 struct snd_pcm_hw_params *params)22{23 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);24 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);25 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);26 int rfs, ret;27 unsigned long rclk;28 29 rfs = 256;30 31 rclk = params_rate(params) * rfs;32 33 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,34 0, SND_SOC_CLOCK_OUT);35 if (ret < 0)36 return ret;37 38 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,39 0, SND_SOC_CLOCK_OUT);40 41 if (ret < 0)42 return ret;43 44 ret = snd_soc_dai_set_sysclk(codec_dai, 0, rclk, SND_SOC_CLOCK_OUT);45 if (ret < 0)46 return ret;47 48 return 0;49}50 51static const struct snd_soc_ops arndale_rt5631_ops = {52 .hw_params = arndale_rt5631_hw_params,53};54 55static int arndale_wm1811_hw_params(struct snd_pcm_substream *substream,56 struct snd_pcm_hw_params *params)57{58 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);59 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);60 unsigned int rfs, rclk;61 62 /* Ensure AIF1CLK is >= 3 MHz for optimal performance */63 if (params_width(params) == 24)64 rfs = 384;65 else if (params_rate(params) == 8000 || params_rate(params) == 11025)66 rfs = 512;67 else68 rfs = 256;69 70 rclk = params_rate(params) * rfs;71 72 /*73 * We add 1 to the frequency value to ensure proper EPLL setting74 * for each audio sampling rate (see epll_24mhz_tbl in drivers/clk/75 * samsung/clk-exynos5250.c for list of available EPLL rates).76 * The CODEC uses clk API and the value will be rounded hence the MCLK177 * clock's frequency will still be exact multiple of the sample rate.78 */79 return snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1,80 rclk + 1, SND_SOC_CLOCK_IN);81}82 83static const struct snd_soc_ops arndale_wm1811_ops = {84 .hw_params = arndale_wm1811_hw_params,85};86 87SND_SOC_DAILINK_DEFS(rt5631_hifi,88 DAILINK_COMP_ARRAY(COMP_EMPTY()),89 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-aif1")),90 DAILINK_COMP_ARRAY(COMP_EMPTY()));91 92static struct snd_soc_dai_link arndale_rt5631_dai[] = {93 {94 .name = "RT5631 HiFi",95 .stream_name = "Primary",96 .dai_fmt = SND_SOC_DAIFMT_I2S97 | SND_SOC_DAIFMT_NB_NF98 | SND_SOC_DAIFMT_CBS_CFS,99 .ops = &arndale_rt5631_ops,100 SND_SOC_DAILINK_REG(rt5631_hifi),101 },102};103 104SND_SOC_DAILINK_DEFS(wm1811_hifi,105 DAILINK_COMP_ARRAY(COMP_EMPTY()),106 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")),107 DAILINK_COMP_ARRAY(COMP_EMPTY()));108 109static struct snd_soc_dai_link arndale_wm1811_dai[] = {110 {111 .name = "WM1811 HiFi",112 .stream_name = "Primary",113 .dai_fmt = SND_SOC_DAIFMT_I2S114 | SND_SOC_DAIFMT_NB_NF115 | SND_SOC_DAIFMT_CBM_CFM,116 .ops = &arndale_wm1811_ops,117 SND_SOC_DAILINK_REG(wm1811_hifi),118 },119};120 121static struct snd_soc_card arndale_rt5631 = {122 .name = "Arndale RT5631",123 .owner = THIS_MODULE,124 .dai_link = arndale_rt5631_dai,125 .num_links = ARRAY_SIZE(arndale_rt5631_dai),126};127 128static struct snd_soc_card arndale_wm1811 = {129 .name = "Arndale WM1811",130 .owner = THIS_MODULE,131 .dai_link = arndale_wm1811_dai,132 .num_links = ARRAY_SIZE(arndale_wm1811_dai),133};134 135static void arndale_put_of_nodes(struct snd_soc_card *card)136{137 struct snd_soc_dai_link *dai_link;138 int i;139 140 for_each_card_prelinks(card, i, dai_link) {141 of_node_put(dai_link->cpus->of_node);142 of_node_put(dai_link->codecs->of_node);143 }144}145 146static int arndale_audio_probe(struct platform_device *pdev)147{148 struct device_node *np = pdev->dev.of_node;149 struct snd_soc_card *card;150 struct snd_soc_dai_link *dai_link;151 int ret;152 153 card = (struct snd_soc_card *)of_device_get_match_data(&pdev->dev);154 card->dev = &pdev->dev;155 dai_link = card->dai_link;156 157 dai_link->cpus->of_node = of_parse_phandle(np, "samsung,audio-cpu", 0);158 if (!dai_link->cpus->of_node) {159 dev_err(&pdev->dev,160 "Property 'samsung,audio-cpu' missing or invalid\n");161 return -EINVAL;162 }163 164 if (!dai_link->platforms->name)165 dai_link->platforms->of_node = dai_link->cpus->of_node;166 167 dai_link->codecs->of_node = of_parse_phandle(np, "samsung,audio-codec", 0);168 if (!dai_link->codecs->of_node) {169 dev_err(&pdev->dev,170 "Property 'samsung,audio-codec' missing or invalid\n");171 ret = -EINVAL;172 goto err_put_of_nodes;173 }174 175 ret = devm_snd_soc_register_card(card->dev, card);176 if (ret) {177 dev_err_probe(&pdev->dev, ret,178 "snd_soc_register_card() failed\n");179 goto err_put_of_nodes;180 }181 return 0;182 183err_put_of_nodes:184 arndale_put_of_nodes(card);185 return ret;186}187 188static void arndale_audio_remove(struct platform_device *pdev)189{190 struct snd_soc_card *card = platform_get_drvdata(pdev);191 192 arndale_put_of_nodes(card);193}194 195static const struct of_device_id arndale_audio_of_match[] = {196 { .compatible = "samsung,arndale-rt5631", .data = &arndale_rt5631 },197 { .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 },198 { .compatible = "samsung,arndale-wm1811", .data = &arndale_wm1811 },199 {},200};201MODULE_DEVICE_TABLE(of, arndale_audio_of_match);202 203static struct platform_driver arndale_audio_driver = {204 .driver = {205 .name = "arndale-audio",206 .pm = &snd_soc_pm_ops,207 .of_match_table = arndale_audio_of_match,208 },209 .probe = arndale_audio_probe,210 .remove = arndale_audio_remove,211};212 213module_platform_driver(arndale_audio_driver);214 215MODULE_AUTHOR("Claude <claude@insignal.co.kr>");216MODULE_DESCRIPTION("ALSA SoC Driver for Arndale Board");217MODULE_LICENSE("GPL");218