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         int int_port, ext_port;
  59         int ret;
  60
  61         ret = of_property_read_u32(np, "mux-int-port", &int_port);
  62         if (ret) {
  63                 dev_err(&pdev->dev, "mux-int-port missing or invalid\n");
  64                 return ret;
  65         }
  66         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
  67         if (ret) {
  68                 dev_err(&pdev->dev, "mux-ext-port missing or invalid\n");
  69                 return ret;
  70         }
  71
  72         /*
  73          * The port numbering in the hardware manual starts at 1, while
  74          * the audmux API expects it starts at 0.
  75          */
  76         int_port--;
  77         ext_port--;
  78         ret = imx_audmux_v2_configure_port(int_port,
  79                         IMX_AUDMUX_V2_PTCR_SYN |
  80                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
  81                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
  82                         IMX_AUDMUX_V2_PTCR_TFSDIR |
  83                         IMX_AUDMUX_V2_PTCR_TCLKDIR,
  84                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
  85         if (ret) {
  86                 dev_err(&pdev->dev, "audmux internal port setup failed\n");
  87                 return ret;
  88         }
  89         ret = imx_audmux_v2_configure_port(ext_port,
  90                         IMX_AUDMUX_V2_PTCR_SYN,
  91                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
  92         if (ret) {
  93                 dev_err(&pdev->dev, "audmux external port setup failed\n");
  94                 return ret;
  95         }
  96
  97         ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
  98         codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
  99         if (!ssi_np || !codec_np) {
 100                 dev_err(&pdev->dev, "phandle missing or invalid\n");
 101                 ret = -EINVAL;
 102                 goto fail;
 103         }
 104
 105         ssi_pdev = of_find_device_by_node(ssi_np);
 106         if (!ssi_pdev) {
 107                 dev_err(&pdev->dev, "failed to find SSI platform device\n");
 108                 ret = -EPROBE_DEFER;
 109                 goto fail;
 110         }
 111         put_device(&ssi_pdev->dev);
 112         codec_dev = of_find_i2c_device_by_node(codec_np);
 113         if (!codec_dev) {
 114                 dev_err(&pdev->dev, "failed to find codec platform device\n");
 115                 ret = -EPROBE_DEFER;
 116                 goto fail;
 117         }
 118
 119         data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 120         if (!data) {
 121                 ret = -ENOMEM;
 122                 goto fail;
 123         }
 124
 125         data->codec_clk = clk_get(&codec_dev->dev, NULL);
 126         if (IS_ERR(data->codec_clk)) {
 127                 ret = PTR_ERR(data->codec_clk);
 128                 goto fail;
 129         }
 130
 131         data->clk_frequency = clk_get_rate(data->codec_clk);
 132
 133         data->dai.name = "HiFi";
 134         data->dai.stream_name = "HiFi";
 135         data->dai.codec_dai_name = "sgtl5000";
 136         data->dai.codec_of_node = codec_np;
 137         data->dai.cpu_of_node = ssi_np;
 138         data->dai.platform_of_node = ssi_np;
 139         data->dai.init = &imx_sgtl5000_dai_init;
 140         data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 141                             SND_SOC_DAIFMT_CBM_CFM;
 142
 143         data->card.dev = &pdev->dev;
 144         ret = snd_soc_of_parse_card_name(&data->card, "model");
 145         if (ret)
 146                 goto fail;
 147         ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 148         if (ret)
 149                 goto fail;
 150         data->card.num_links = 1;
 151         data->card.owner = THIS_MODULE;
 152         data->card.dai_link = &data->dai;
 153         data->card.dapm_widgets = imx_sgtl5000_dapm_widgets;
 154         data->card.num_dapm_widgets = ARRAY_SIZE(imx_sgtl5000_dapm_widgets);
 155
 156         platform_set_drvdata(pdev, &data->card);
 157         snd_soc_card_set_drvdata(&data->card, data);
 158
 159         ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
 160         if (ret) {
 161                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 162                 goto fail;
 163         }
 164
 165         of_node_put(ssi_np);
 166         of_node_put(codec_np);
 167
 168         return 0;
 169
 170 fail:
 171         if (data && !IS_ERR(data->codec_clk))
 172                 clk_put(data->codec_clk);
 173         of_node_put(ssi_np);
 174         of_node_put(codec_np);
 175
 176         return ret;
 177 }
 178
 179 static int imx_sgtl5000_remove(struct platform_device *pdev)
 180 {
 181         struct snd_soc_card *card = platform_get_drvdata(pdev);
 182         struct imx_sgtl5000_data *data = snd_soc_card_get_drvdata(card);
 183
 184         clk_put(data->codec_clk);
 185
 186         return 0;
 187 }
 188
 189 static const struct of_device_id imx_sgtl5000_dt_ids[] = {
 190         { .compatible = "fsl,imx-audio-sgtl5000", },
 191         { /* sentinel */ }
 192 };
 193 MODULE_DEVICE_TABLE(of, imx_sgtl5000_dt_ids);
 194
 195 static struct platform_driver imx_sgtl5000_driver = {
 196         .driver = {
 197                 .name = "imx-sgtl5000",
 198                 .pm = &snd_soc_pm_ops,
 199                 .of_match_table = imx_sgtl5000_dt_ids,
 200         },
 201         .probe = imx_sgtl5000_probe,
 202         .remove = imx_sgtl5000_remove,
 203 };
 204 module_platform_driver(imx_sgtl5000_driver);
 205
 206 MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
 207 MODULE_DESCRIPTION("Freescale i.MX SGTL5000 ASoC machine driver");
 208 MODULE_LICENSE("GPL v2");
 209 MODULE_ALIAS("platform:imx-sgtl5000");