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 = asoc_rtd_to_codec(rtd, 0); 24 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 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 66 SND_SOC_DAILINK_DEFS(hifi_tx, 67 DAILINK_COMP_ARRAY(COMP_EMPTY()), 68 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")), 69 DAILINK_COMP_ARRAY(COMP_EMPTY())); 70 71 SND_SOC_DAILINK_DEFS(hifi_rx, 72 DAILINK_COMP_ARRAY(COMP_EMPTY()), 73 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")), 74 DAILINK_COMP_ARRAY(COMP_EMPTY())); 75 76 static struct snd_soc_dai_link mxs_sgtl5000_dai[] = { 77 { 78 .name = "HiFi Tx", 79 .stream_name = "HiFi Playback", 80 .dai_fmt = MXS_SGTL5000_DAI_FMT, 81 .ops = &mxs_sgtl5000_hifi_ops, 82 .playback_only = true, 83 SND_SOC_DAILINK_REG(hifi_tx), 84 }, { 85 .name = "HiFi Rx", 86 .stream_name = "HiFi Capture", 87 .dai_fmt = MXS_SGTL5000_DAI_FMT, 88 .ops = &mxs_sgtl5000_hifi_ops, 89 .capture_only = true, 90 SND_SOC_DAILINK_REG(hifi_rx), 91 }, 92 }; 93 94 static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = { 95 SND_SOC_DAPM_MIC("Mic Jack", NULL), 96 SND_SOC_DAPM_LINE("Line In Jack", NULL), 97 SND_SOC_DAPM_HP("Headphone Jack", NULL), 98 SND_SOC_DAPM_SPK("Line Out Jack", NULL), 99 SND_SOC_DAPM_SPK("Ext Spk", NULL), 100 }; 101 102 static struct snd_soc_card mxs_sgtl5000 = { 103 .name = "mxs_sgtl5000", 104 .owner = THIS_MODULE, 105 .dai_link = mxs_sgtl5000_dai, 106 .num_links = ARRAY_SIZE(mxs_sgtl5000_dai), 107 }; 108 109 static int mxs_sgtl5000_probe(struct platform_device *pdev) 110 { 111 struct snd_soc_card *card = &mxs_sgtl5000; 112 int ret, i; 113 struct device_node *np = pdev->dev.of_node; 114 struct device_node *saif_np[2], *codec_np; 115 116 saif_np[0] = of_parse_phandle(np, "saif-controllers", 0); 117 saif_np[1] = of_parse_phandle(np, "saif-controllers", 1); 118 codec_np = of_parse_phandle(np, "audio-codec", 0); 119 if (!saif_np[0] || !saif_np[1] || !codec_np) { 120 dev_err(&pdev->dev, "phandle missing or invalid\n"); 121 return -EINVAL; 122 } 123 124 for (i = 0; i < 2; i++) { 125 mxs_sgtl5000_dai[i].codecs->name = NULL; 126 mxs_sgtl5000_dai[i].codecs->of_node = codec_np; 127 mxs_sgtl5000_dai[i].cpus->dai_name = NULL; 128 mxs_sgtl5000_dai[i].cpus->of_node = saif_np[i]; 129 mxs_sgtl5000_dai[i].platforms->name = NULL; 130 mxs_sgtl5000_dai[i].platforms->of_node = saif_np[i]; 131 } 132 133 of_node_put(codec_np); 134 of_node_put(saif_np[0]); 135 of_node_put(saif_np[1]); 136 137 /* 138 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w). 139 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range 140 * should be >= 8MHz and <= 27M. 141 */ 142 ret = mxs_saif_get_mclk(0, 44100 * 256, 44100); 143 if (ret) { 144 dev_err(&pdev->dev, "failed to get mclk\n"); 145 return ret; 146 } 147 148 card->dev = &pdev->dev; 149 150 if (of_find_property(np, "audio-routing", NULL)) { 151 card->dapm_widgets = mxs_sgtl5000_dapm_widgets; 152 card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets); 153 154 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 155 if (ret) { 156 dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n", 157 ret); 158 return ret; 159 } 160 } 161 162 ret = devm_snd_soc_register_card(&pdev->dev, card); 163 if (ret) { 164 if (ret != -EPROBE_DEFER) 165 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 166 ret); 167 return ret; 168 } 169 170 return 0; 171 } 172 173 static int mxs_sgtl5000_remove(struct platform_device *pdev) 174 { 175 mxs_saif_put_mclk(0); 176 177 return 0; 178 } 179 180 static const struct of_device_id mxs_sgtl5000_dt_ids[] = { 181 { .compatible = "fsl,mxs-audio-sgtl5000", }, 182 { /* sentinel */ } 183 }; 184 MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids); 185 186 static struct platform_driver mxs_sgtl5000_audio_driver = { 187 .driver = { 188 .name = "mxs-sgtl5000", 189 .of_match_table = mxs_sgtl5000_dt_ids, 190 }, 191 .probe = mxs_sgtl5000_probe, 192 .remove = mxs_sgtl5000_remove, 193 }; 194 195 module_platform_driver(mxs_sgtl5000_audio_driver); 196 197 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 198 MODULE_DESCRIPTION("MXS ALSA SoC Machine driver"); 199 MODULE_LICENSE("GPL"); 200 MODULE_ALIAS("platform:mxs-sgtl5000"); 201