sound/soc/fsl/imx-sgtl5000.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Copyright 2012 Freescale Semiconductor, Inc.
   4 // Copyright 2012 Linaro Ltd.
   5
   6 #include <linux/module.h>
   7 #include <linux/of.h>
   8 #include <linux/of_platform.h>
   9 #include <linux/i2c.h>
  10 #include <linux/clk.h>
  11 #include <sound/soc.h>
  12
  13 #include "../codecs/sgtl5000.h"
  14 #include "imx-audmux.h"
  15
  16 #define DAI_NAME_SIZE   32
  17
  18 struct imx_sgtl5000_data {
  19         struct snd_soc_dai_link dai;
  20         struct snd_soc_card card;
  21         char codec_dai_name[DAI_NAME_SIZE];
  22         char platform_name[DAI_NAME_SIZE];
  23         struct clk *codec_clk;
  24         unsigned int clk_frequency;
  25 };
  26
  27 static int imx_sgtl5000_dai_init(struct snd_soc_pcm_runtime *rtd)
  28 {
  29         struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(rtd->card);
  30         struct device *dev = rtd->card->dev;
  31         int ret;
  32
  33         ret = snd_soc_dai_set_sysclk(rtd->codec_dai, SGTL5000_SYSCLK,
  34                                      data->clk_frequency, SND_SOC_CLOCK_IN);
  35         if (ret) {
  36                 dev_err(dev, "could not set codec driver clock params\n");
  37                 return ret;
  38         }
  39
  40         return 0;
  41 }
  42
  43 static const struct snd_soc_dapm_widget imx_sgtl5000_dapm_widgets[] = {
  44         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  45         SND_SOC_DAPM_LINE("Line In Jack", NULL),
  46         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  47         SND_SOC_DAPM_SPK("Line Out Jack", NULL),
  48         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  49 };
  50
  51 static int imx_sgtl5000_probe(struct platform_device *pdev)
  52 {
  53         struct device_node *np = pdev->dev.of_node;
  54         struct device_node *ssi_np, *codec_np;
  55         struct platform_device *ssi_pdev;
  56         struct i2c_client *codec_dev;
  57         struct imx_sgtl5000_data *data = NULL;
  58         struct snd_soc_dai_link_component *comp;
  59         int int_port, ext_port;
  60         int ret;
  61
  62         ret = of_property_read_u32(np, "mux-int-port", &int_port);
  63         if (ret) {
  64                 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
  65                 return ret;
  66         }
  67         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
  68         if (ret) {
  69                 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
  70                 return ret;
  71         }
  72
  73         /*
  74          * The port numbering in the hardware manual starts at 1, while
  75          * the audmux API expects it starts at 0.
  76          */
  77         int_port--;
  78         ext_port--;
  79         ret = imx_audmux_v2_configure_port(int_port,
  80                         IMX_AUDMUX_V2_PTCR_SYN |
  81                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
  82                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
  83                         IMX_AUDMUX_V2_PTCR_TFSDIR |
  84                         IMX_AUDMUX_V2_PTCR_TCLKDIR,
  85                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
  86         if (ret) {
  87                 dev_err(&pdev->dev, "audmux internal port setup failed\n");
  88                 return ret;
  89         }
  90         ret = imx_audmux_v2_configure_port(ext_port,
  91                         IMX_AUDMUX_V2_PTCR_SYN,
  92                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
  93         if (ret) {
  94                 dev_err(&pdev->dev, "audmux external port setup failed\n");
  95                 return ret;
  96         }
  97
  98         ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
  99         codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
 100         if (!ssi_np || !codec_np) {
 101                 dev_err(&pdev->dev, "phandle missing or invalid\n");
 102                 ret = -EINVAL;
 103                 goto fail;
 104         }
 105
 106         ssi_pdev = of_find_device_by_node(ssi_np);
 107         if (!ssi_pdev) {
 108                 dev_dbg(&pdev->dev, "failed to find SSI platform device\n");
 109                 ret = -EPROBE_DEFER;
 110                 goto fail;
 111         }
 112         put_device(&ssi_pdev->dev);
 113         codec_dev = of_find_i2c_device_by_node(codec_np);
 114         if (!codec_dev) {
 115                 dev_dbg(&pdev->dev, "failed to find codec platform device\n");
 116                 ret = -EPROBE_DEFER;
 117                 goto fail;
 118         }
 119
 120         data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 121         if (!data) {
 122                 ret = -ENOMEM;
 123                 goto fail;
 124         }
 125
 126         comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
 127         if (!comp) {
 128                 ret = -ENOMEM;
 129                 goto fail;
 130         }
 131
 132         data->codec_clk = clk_get(&codec_dev->dev, NULL);
 133         if (IS_ERR(data->codec_clk)) {
 134                 ret = PTR_ERR(data->codec_clk);
 135                 goto fail;
 136         }
 137
 138         data->clk_frequency = clk_get_rate(data->codec_clk);
 139
 140         data->dai.cpus          = &comp[0];
 141         data->dai.codecs        = &comp[1];
 142         data->dai.platforms     = &comp[2];
 143
 144         data->dai.num_cpus      = 1;
 145         data->dai.num_codecs    = 1;
 146         data->dai.num_platforms = 1;
 147
 148         data->dai.name = "HiFi";
 149         data->dai.stream_name = "HiFi";
 150         data->dai.codecs->dai_name = "sgtl5000";
 151         data->dai.codecs->of_node = codec_np;
 152         data->dai.cpus->of_node = ssi_np;
 153         data->dai.platforms->of_node = ssi_np;
 154         data->dai.init = &imx_sgtl5000_dai_init;
 155         data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 156                             SND_SOC_DAIFMT_CBM_CFM;
 157
 158         data->card.dev = &pdev->dev;
 159         ret = snd_soc_of_parse_card_name(&data->card, "model");
 160         if (ret)
 161                 goto fail;
 162         ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 163         if (ret)
 164                 goto fail;
 165         data->card.num_links = 1;
 166         data->card.owner = THIS_MODULE;
 167         data->card.dai_link = &data->dai;
 168         data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
 169         data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
 170
 171         platform_set_drvdata(pdev, &data->card);
 172         snd_soc_card_set_drvdata(&data->card, data);
 173
 174         ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
 175         if (ret) {
 176                 if (ret != -EPROBE_DEFER)
 177                         dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 178                                 ret);
 179                 goto fail;
 180         }
 181
 182         of_node_put(ssi_np);
 183         of_node_put(codec_np);
 184
 185         return 0;
 186
 187 fail:
 188         if (data && !IS_ERR(data->codec_clk))
 189                 clk_put(data->codec_clk);
 190         of_node_put(ssi_np);
 191         of_node_put(codec_np);
 192
 193         return ret;
 194 }
 195
 196 static int imx_sgtl5000_remove(struct platform_device *pdev)
 197 {
 198         struct snd_soc_card *card = platform_get_drvdata(pdev);
 199         struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
 200
 201         clk_put(data->codec_clk);
 202
 203         return 0;
 204 }
 205
 206 static const struct of_device_id imx_sgtl5000_dt_ids[] = {
 207         { .compatible = "fsl,imx-audio-sgtl5000", },
 208         { /* sentinel */ }
 209 };
 210 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
 211
 212 static struct platform_driver imx_sgtl5000_driver = {
 213         .driver = {
 214                 .name = "imx-sgtl5000",
 215                 .pm = &snd_soc_pm_ops,
 216                 .of_match_table = imx_sgtl5000_dt_ids,
 217         },
 218         .probe = imx_sgtl5000_probe,
 219         .remove = imx_sgtl5000_remove,
 220 };
 221 module_platform_driver(imx_sgtl5000_driver);
 222
 223 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
 224 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
 225 MODULE_LICENSE("GPL v2");
 226 MODULE_ALIAS("platform:imx-sgtl5000");