sound/soc/fsl/imx-es8328.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Copyright 2012 Freescale Semiconductor, Inc.
   4 // Copyright 2012 Linaro Ltd.
   5
   6 #include <linux/gpio.h>
   7 #include <linux/module.h>
   8 #include <linux/of.h>
   9 #include <linux/of_platform.h>
  10 #include <linux/i2c.h>
  11 #include <linux/of_gpio.h>
  12 #include <sound/soc.h>
  13 #include <sound/jack.h>
  14
  15 #include "imx-audmux.h"
  16
  17 #define DAI_NAME_SIZE   32
  18 #define MUX_PORT_MAX    7
  19
  20 struct imx_es8328_data {
  21         struct device *dev;
  22         struct snd_soc_dai_link dai;
  23         struct snd_soc_card card;
  24         char codec_dai_name[DAI_NAME_SIZE];
  25         char platform_name[DAI_NAME_SIZE];
  26         int jack_gpio;
  27 };
  28
  29 static struct snd_soc_jack_gpio headset_jack_gpios[] = {
  30         {
  31                 .gpio = -1,
  32                 .name = "headset-gpio",
  33                 .report = SND_JACK_HEADSET,
  34                 .invert = 0,
  35                 .debounce_time = 200,
  36         },
  37 };
  38
  39 static struct snd_soc_jack headset_jack;
  40
  41 static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
  42 {
  43         struct imx_es8328_data *data = container_of(rtd->card,
  44                                         struct imx_es8328_data, card);
  45         int ret = 0;
  46
  47         /* Headphone jack detection */
  48         if (gpio_is_valid(data->jack_gpio)) {
  49                 ret = snd_soc_card_jack_new(rtd->card, "Headphone",
  50                                             SND_JACK_HEADPHONE | SND_JACK_BTN_0,
  51                                             &headset_jack, NULL, 0);
  52                 if (ret)
  53                         return ret;
  54
  55                 headset_jack_gpios[0].gpio = data->jack_gpio;
  56                 ret = snd_soc_jack_add_gpios(&headset_jack,
  57                                              ARRAY_SIZE(headset_jack_gpios),
  58                                              headset_jack_gpios);
  59         }
  60
  61         return ret;
  62 }
  63
  64 static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
  65         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  66         SND_SOC_DAPM_HP("Headphone", NULL),
  67         SND_SOC_DAPM_SPK("Speaker", NULL),
  68         SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
  69 };
  70
  71 static int imx_es8328_probe(struct platform_device *pdev)
  72 {
  73         struct device_node *np = pdev->dev.of_node;
  74         struct device_node *ssi_np = NULL, *codec_np = NULL;
  75         struct platform_device *ssi_pdev;
  76         struct imx_es8328_data *data;
  77         struct snd_soc_dai_link_component *comp;
  78         u32 int_port, ext_port;
  79         int ret;
  80         struct device *dev = &pdev->dev;
  81
  82         ret = of_property_read_u32(np, "mux-int-port", &int_port);
  83         if (ret) {
  84                 dev_err(dev, "mux-int-port missing or invalid\n");
  85                 goto fail;
  86         }
  87         if (int_port > MUX_PORT_MAX || int_port == 0) {
  88                 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
  89                         MUX_PORT_MAX);
  90                 goto fail;
  91         }
  92
  93         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
  94         if (ret) {
  95                 dev_err(dev, "mux-ext-port missing or invalid\n");
  96                 goto fail;
  97         }
  98         if (ext_port > MUX_PORT_MAX || ext_port == 0) {
  99                 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
 100                         MUX_PORT_MAX);
 101                 ret = -EINVAL;
 102                 goto fail;
 103         }
 104
 105         /*
 106          * The port numbering in the hardware manual starts at 1, while
 107          * the audmux API expects it starts at 0.
 108          */
 109         int_port--;
 110         ext_port--;
 111         ret = imx_audmux_v2_configure_port(int_port,
 112                         IMX_AUDMUX_V2_PTCR_SYN |
 113                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 114                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 115                         IMX_AUDMUX_V2_PTCR_TFSDIR |
 116                         IMX_AUDMUX_V2_PTCR_TCLKDIR,
 117                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 118         if (ret) {
 119                 dev_err(dev, "audmux internal port setup failed\n");
 120                 return ret;
 121         }
 122         ret = imx_audmux_v2_configure_port(ext_port,
 123                         IMX_AUDMUX_V2_PTCR_SYN,
 124                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 125         if (ret) {
 126                 dev_err(dev, "audmux external port setup failed\n");
 127                 return ret;
 128         }
 129
 130         ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
 131         codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
 132         if (!ssi_np || !codec_np) {
 133                 dev_err(dev, "phandle missing or invalid\n");
 134                 ret = -EINVAL;
 135                 goto fail;
 136         }
 137
 138         ssi_pdev = of_find_device_by_node(ssi_np);
 139         if (!ssi_pdev) {
 140                 dev_err(dev, "failed to find SSI platform device\n");
 141                 ret = -EINVAL;
 142                 goto fail;
 143         }
 144
 145         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 146         if (!data) {
 147                 ret = -ENOMEM;
 148                 goto fail;
 149         }
 150
 151         comp = devm_kzalloc(dev, 3 * sizeof(*comp), GFP_KERNEL);
 152         if (!comp) {
 153                 ret = -ENOMEM;
 154                 goto fail;
 155         }
 156
 157         data->dev = dev;
 158
 159         data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
 160
 161         data->dai.cpus          = &comp[0];
 162         data->dai.codecs        = &comp[1];
 163         data->dai.platforms     = &comp[2];
 164
 165         data->dai.num_cpus      = 1;
 166         data->dai.num_codecs    = 1;
 167         data->dai.num_platforms = 1;
 168
 169         data->dai.name = "hifi";
 170         data->dai.stream_name = "hifi";
 171         data->dai.codecs->dai_name = "es8328-hifi-analog";
 172         data->dai.codecs->of_node = codec_np;
 173         data->dai.cpus->of_node = ssi_np;
 174         data->dai.platforms->of_node = ssi_np;
 175         data->dai.init = &imx_es8328_dai_init;
 176         data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 177                             SND_SOC_DAIFMT_CBM_CFM;
 178
 179         data->card.dev = dev;
 180         data->card.dapm_widgets = imx_es8328_dapm_widgets;
 181         data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
 182         ret = snd_soc_of_parse_card_name(&data->card, "model");
 183         if (ret) {
 184                 dev_err(dev, "Unable to parse card name\n");
 185                 goto fail;
 186         }
 187         ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 188         if (ret) {
 189                 dev_err(dev, "Unable to parse routing: %d\n", ret);
 190                 goto fail;
 191         }
 192         data->card.num_links = 1;
 193         data->card.owner = THIS_MODULE;
 194         data->card.dai_link = &data->dai;
 195
 196         ret = snd_soc_register_card(&data->card);
 197         if (ret) {
 198                 dev_err(dev, "Unable to register: %d\n", ret);
 199                 goto fail;
 200         }
 201
 202         platform_set_drvdata(pdev, data);
 203 fail:
 204         of_node_put(ssi_np);
 205         of_node_put(codec_np);
 206
 207         return ret;
 208 }
 209
 210 static int imx_es8328_remove(struct platform_device *pdev)
 211 {
 212         struct imx_es8328_data *data = platform_get_drvdata(pdev);
 213
 214         snd_soc_unregister_card(&data->card);
 215
 216         return 0;
 217 }
 218
 219 static const struct of_device_id imx_es8328_dt_ids[] = {
 220         { .compatible = "fsl,imx-audio-es8328", },
 221         { /* sentinel */ }
 222 };
 223 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
 224
 225 static struct platform_driver imx_es8328_driver = {
 226         .driver = {
 227                 .name = "imx-es8328",
 228                 .of_match_table = imx_es8328_dt_ids,
 229         },
 230         .probe = imx_es8328_probe,
 231         .remove = imx_es8328_remove,
 232 };
 233 module_platform_driver(imx_es8328_driver);
 234
 235 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
 236 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
 237 MODULE_LICENSE("GPL v2");
 238 MODULE_ALIAS("platform:imx-audio-es8328");