1 /* 2 * Copyright 2011 Freescale Semiconductor, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License along 15 * with this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 17 */ 18 19 #include <linux/module.h> 20 #include <linux/device.h> 21 #include <linux/of.h> 22 #include <linux/of_device.h> 23 #include <sound/core.h> 24 #include <sound/pcm.h> 25 #include <sound/soc.h> 26 #include <sound/jack.h> 27 #include <sound/soc-dapm.h> 28 29 #include "../codecs/sgtl5000.h" 30 #include "mxs-saif.h" 31 32 static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream, 33 struct snd_pcm_hw_params *params) 34 { 35 struct snd_soc_pcm_runtime *rtd = substream->private_data; 36 struct snd_soc_dai *codec_dai = rtd->codec_dai; 37 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 38 unsigned int rate = params_rate(params); 39 u32 mclk; 40 int ret; 41 42 /* sgtl5000 does not support 512*rate when in 96000 fs */ 43 switch (rate) { 44 case 96000: 45 mclk = 256 * rate; 46 break; 47 default: 48 mclk = 512 * rate; 49 break; 50 } 51 52 /* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */ 53 ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0); 54 if (ret) { 55 dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", 56 mclk / 1000000, mclk / 1000 % 1000); 57 return ret; 58 } 59 60 /* The SAIF MCLK should be the same as SGTL5000_SYSCLK */ 61 ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0); 62 if (ret) { 63 dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n", 64 mclk / 1000000, mclk / 1000 % 1000); 65 return ret; 66 } 67 68 return 0; 69 } 70 71 static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = { 72 .hw_params = mxs_sgtl5000_hw_params, 73 }; 74 75 #define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \ 76 SND_SOC_DAIFMT_CBS_CFS) 77 78 static struct snd_soc_dai_link mxs_sgtl5000_dai[] = { 79 { 80 .name = "HiFi Tx", 81 .stream_name = "HiFi Playback", 82 .codec_dai_name = "sgtl5000", 83 .dai_fmt = MXS_SGTL5000_DAI_FMT, 84 .ops = &mxs_sgtl5000_hifi_ops, 85 .playback_only = true, 86 }, { 87 .name = "HiFi Rx", 88 .stream_name = "HiFi Capture", 89 .codec_dai_name = "sgtl5000", 90 .dai_fmt = MXS_SGTL5000_DAI_FMT, 91 .ops = &mxs_sgtl5000_hifi_ops, 92 .capture_only = true, 93 }, 94 }; 95 96 static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = { 97 SND_SOC_DAPM_MIC("Mic Jack", NULL), 98 SND_SOC_DAPM_LINE("Line In Jack", NULL), 99 SND_SOC_DAPM_HP("Headphone Jack", NULL), 100 SND_SOC_DAPM_SPK("Line Out Jack", NULL), 101 SND_SOC_DAPM_SPK("Ext Spk", NULL), 102 }; 103 104 static struct snd_soc_card mxs_sgtl5000 = { 105 .name = "mxs_sgtl5000", 106 .owner = THIS_MODULE, 107 .dai_link = mxs_sgtl5000_dai, 108 .num_links = ARRAY_SIZE(mxs_sgtl5000_dai), 109 }; 110 111 static int mxs_sgtl5000_probe(struct platform_device *pdev) 112 { 113 struct snd_soc_card *card = &mxs_sgtl5000; 114 int ret, i; 115 struct device_node *np = pdev->dev.of_node; 116 struct device_node *saif_np[2], *codec_np; 117 118 saif_np[0] = of_parse_phandle(np, "saif-controllers", 0); 119 saif_np[1] = of_parse_phandle(np, "saif-controllers", 1); 120 codec_np = of_parse_phandle(np, "audio-codec", 0); 121 if (!saif_np[0] || !saif_np[1] || !codec_np) { 122 dev_err(&pdev->dev, "phandle missing or invalid\n"); 123 return -EINVAL; 124 } 125 126 for (i = 0; i < 2; i++) { 127 mxs_sgtl5000_dai[i].codec_name = NULL; 128 mxs_sgtl5000_dai[i].codec_of_node = codec_np; 129 mxs_sgtl5000_dai[i].cpu_dai_name = NULL; 130 mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i]; 131 mxs_sgtl5000_dai[i].platform_name = NULL; 132 mxs_sgtl5000_dai[i].platform_of_node = saif_np[i]; 133 } 134 135 of_node_put(codec_np); 136 of_node_put(saif_np[0]); 137 of_node_put(saif_np[1]); 138 139 /* 140 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w). 141 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range 142 * should be >= 8MHz and <= 27M. 143 */ 144 ret = mxs_saif_get_mclk(0, 44100 * 256, 44100); 145 if (ret) { 146 dev_err(&pdev->dev, "failed to get mclk\n"); 147 return ret; 148 } 149 150 card->dev = &pdev->dev; 151 152 if (of_find_property(np, "audio-routing", NULL)) { 153 card->dapm_widgets = mxs_sgtl5000_dapm_widgets; 154 card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets); 155 156 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 157 if (ret) { 158 dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n", 159 ret); 160 return ret; 161 } 162 } 163 164 ret = devm_snd_soc_register_card(&pdev->dev, card); 165 if (ret) { 166 if (ret != -EPROBE_DEFER) 167 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", 168 ret); 169 return ret; 170 } 171 172 return 0; 173 } 174 175 static int mxs_sgtl5000_remove(struct platform_device *pdev) 176 { 177 mxs_saif_put_mclk(0); 178 179 return 0; 180 } 181 182 static const struct of_device_id mxs_sgtl5000_dt_ids[] = { 183 { .compatible = "fsl,mxs-audio-sgtl5000", }, 184 { /* sentinel */ } 185 }; 186 MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids); 187 188 static struct platform_driver mxs_sgtl5000_audio_driver = { 189 .driver = { 190 .name = "mxs-sgtl5000", 191 .of_match_table = mxs_sgtl5000_dt_ids, 192 }, 193 .probe = mxs_sgtl5000_probe, 194 .remove = mxs_sgtl5000_remove, 195 }; 196 197 module_platform_driver(mxs_sgtl5000_audio_driver); 198 199 MODULE_AUTHOR("Freescale Semiconductor, Inc."); 200 MODULE_DESCRIPTION("MXS ALSA SoC Machine driver"); 201 MODULE_LICENSE("GPL"); 202 MODULE_ALIAS("platform:mxs-sgtl5000"); 203