1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright 2011 Freescale Semiconductor, Inc. 4 */ 5 6 #include <linux/module.h> 7 #include <linux/device.h> 8 #include <linux/of.h> 9 #include <linux/of_device.h> 10 #include <sound/core.h> 11 #include <sound/pcm.h> 12 #include <sound/soc.h> 13 #include <sound/jack.h> 14 #include <sound/soc-dapm.h> 15 16 #include "../codecs/sgtl5000.h" 17 #include "mxs-saif.h" 18 19 static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream, 20 struct snd_pcm_hw_params *params) 21 { 22 struct snd_soc_pcm_runtime *rtd = substream->private_data; 23 struct snd_soc_dai *codec_dai = rtd->codec_dai; 24 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 25 unsigned int rate = params_rate(params); 26 u32 mclk; 27 int ret; 28 29 /* sgtl5000 does not support 512*rate when in 96000 fs */ 30 switch (rate) { 31 case 96000: 32 mclk = 256 * rate; 33 break; 34 default: 35 mclk = 512 * rate; 36 break; 37 } 38 39 /* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */ 40 ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0); 41 if (ret) { 42 dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", 43 mclk / 1000000, mclk / 1000 % 1000); 44 return ret; 45 } 46 47 /* The SAIF MCLK should be the same as SGTL5000_SYSCLK */ 48 ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0); 49 if (ret) { 50 dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", 51 mclk / 1000000, mclk / 1000 % 1000); 52 return ret; 53 } 54 55 return 0; 56 } 57 58 static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = { 59 .hw_params = mxs_sgtl5000_hw_params, 60 }; 61 62 #define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ 63 SND_SOC_DAIFMT_CBS_CFS) 64 65 static struct snd_soc_dai_link mxs_sgtl5000_dai[] = { 66 { 67 .name = "HiFi Tx", 68 .stream_name = "HiFi Playback", 69 .codec_dai_name = "sgtl5000", 70 .dai_fmt = MXS_SGTL5000_DAI_FMT, 71 .ops = &mxs_sgtl5000_hifi_ops, 72 .playback_only = true, 73 }, { 74 .name = "HiFi Rx", 75 .stream_name = "HiFi Capture", 76 .codec_dai_name = "sgtl5000", 77 .dai_fmt = MXS_SGTL5000_DAI_FMT, 78 .ops = &mxs_sgtl5000_hifi_ops, 79 .capture_only = true, 80 }, 81 }; 82 83 static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = { 84 SND_SOC_DAPM_MIC("Mic Jack", NULL), 85 SND_SOC_DAPM_LINE("Line In Jack", NULL), 86 SND_SOC_DAPM_HP("Headphone Jack", NULL), 87 SND_SOC_DAPM_SPK("Line Out Jack", NULL), 88 SND_SOC_DAPM_SPK("Ext Spk", NULL), 89 }; 90 91 static struct snd_soc_card mxs_sgtl5000 = { 92 .name = "mxs_sgtl5000", 93 .owner = THIS_MODULE, 94 .dai_link = mxs_sgtl5000_dai, 95 .num_links = ARRAY_SIZE(mxs_sgtl5000_dai), 96 }; 97 98 static int mxs_sgtl5000_probe(struct platform_device *pdev) 99 { 100 struct snd_soc_card *card = &mxs_sgtl5000; 101 int ret, i; 102 struct device_node *np = pdev->dev.of_node; 103 struct device_node *saif_np[2], *codec_np; 104 105 saif_np[0] = of_parse_phandle(np, "saif-controllers", 0); 106 saif_np[1] = of_parse_phandle(np, "saif-controllers", 1); 107 codec_np = of_parse_phandle(np, "audio-codec", 0); 108 if (!saif_np[0] || !saif_np[1] || !codec_np) { 109 dev_err(&pdev->dev, "phandle missing or invalid\n"); 110 return -EINVAL; 111 } 112 113 for (i = 0; i < 2; i++) { 114 mxs_sgtl5000_dai[i].codec_name = NULL; 115 mxs_sgtl5000_dai[i].codec_of_node = codec_np; 116 mxs_sgtl5000_dai[i].cpu_dai_name = NULL; 117 mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i]; 118 mxs_sgtl5000_dai[i].platform_name = NULL; 119 mxs_sgtl5000_dai[i].platform_of_node = saif_np[i]; 120 } 121 122 of_node_put(codec_np); 123 of_node_put(saif_np[0]); 124 of_node_put(saif_np[1]); 125 126 /* 127 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w). 128 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range 129 * should be >= 8MHz and <= 27M. 130 */ 131 ret = mxs_saif_get_mclk(0, 44100 * 256, 44100); 132 if (ret) { 133 dev_err(&pdev->dev, "failed to get mclk\n"); 134 return ret; 135 } 136 137 card->dev = &pdev->dev; 138 139 if (of_find_property(np, "audio-routing", NULL)) { 140 card->dapm_widgets = mxs_sgtl5000_dapm_widgets; 141 card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets); 142 143 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 144 if (ret) { 145 dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n", 146 ret); 147 return ret; 148 } 149 } 150 151 ret = devm_snd_soc_register_card(&pdev->dev, card); 152 if (ret) { 153 if (ret != -EPROBE_DEFER) 154 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 155 ret); 156 return ret; 157 } 158 159 return 0; 160 } 161 162 static int mxs_sgtl5000_remove(struct platform_device *pdev) 163 { 164 mxs_saif_put_mclk(0); 165 166 return 0; 167 } 168 169 static const struct of_device_id mxs_sgtl5000_dt_ids[] = { 170 { .compatible = "fsl,mxs-audio-sgtl5000", }, 171 { /* sentinel */ } 172 }; 173 MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids); 174 175 static struct platform_driver mxs_sgtl5000_audio_driver = { 176 .driver = { 177 .name = "mxs-sgtl5000", 178 .of_match_table = mxs_sgtl5000_dt_ids, 179 }, 180 .probe = mxs_sgtl5000_probe, 181 .remove = mxs_sgtl5000_remove, 182 }; 183 184 module_platform_driver(mxs_sgtl5000_audio_driver); 185 186 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 187 MODULE_DESCRIPTION("MXS ALSA SoC Machine driver"); 188 MODULE_LICENSE("GPL"); 189 MODULE_ALIAS("platform:mxs-sgtl5000"); 190