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 static struct snd_soc_jack_pin headset_jack_pins[] = {
  41         {
  42                 .pin = "Headphone",
  43                 .mask = SND_JACK_HEADPHONE,
  44         },
  45         {
  46                 .pin = "Mic Jack",
  47                 .mask = SND_JACK_MICROPHONE,
  48         },
  49 };
  50
  51 static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
  52 {
  53         struct imx_es8328_data *data = container_of(rtd->card,
  54                                         struct imx_es8328_data, card);
  55         int ret = 0;
  56
  57         /* Headphone jack detection */
  58         if (gpio_is_valid(data->jack_gpio)) {
  59                 ret = snd_soc_card_jack_new_pins(rtd->card, "Headphone",
  60                                                  SND_JACK_HEADSET | SND_JACK_BTN_0,
  61                                                  &headset_jack,
  62                                                  headset_jack_pins,
  63                                                  ARRAY_SIZE(headset_jack_pins));
  64                 if (ret)
  65                         return ret;
  66
  67                 headset_jack_gpios[0].gpio = data->jack_gpio;
  68                 ret = snd_soc_jack_add_gpios(&headset_jack,
  69                                              ARRAY_SIZE(headset_jack_gpios),
  70                                              headset_jack_gpios);
  71         }
  72
  73         return ret;
  74 }
  75
  76 static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
  77         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  78         SND_SOC_DAPM_HP("Headphone", NULL),
  79         SND_SOC_DAPM_SPK("Speaker", NULL),
  80         SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
  81 };
  82
  83 static const struct snd_kcontrol_new imx_es8328_controls[] = {
  84         SOC_DAPM_PIN_SWITCH("Headphone"),
  85         SOC_DAPM_PIN_SWITCH("Mic Jack"),
  86 };
  87
  88 static int imx_es8328_probe(struct platform_device *pdev)
  89 {
  90         struct device_node *np = pdev->dev.of_node;
  91         struct device_node *ssi_np = NULL, *codec_np = NULL;
  92         struct platform_device *ssi_pdev;
  93         struct imx_es8328_data *data;
  94         struct snd_soc_dai_link_component *comp;
  95         u32 int_port, ext_port;
  96         int ret;
  97         struct device *dev = &pdev->dev;
  98
  99         ret = of_property_read_u32(np, "mux-int-port", &int_port);
 100         if (ret) {
 101                 dev_err(dev, "mux-int-port missing or invalid\n");
 102                 goto fail;
 103         }
 104         if (int_port > MUX_PORT_MAX || int_port == 0) {
 105                 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
 106                         MUX_PORT_MAX);
 107                 ret = -EINVAL;
 108                 goto fail;
 109         }
 110
 111         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
 112         if (ret) {
 113                 dev_err(dev, "mux-ext-port missing or invalid\n");
 114                 goto fail;
 115         }
 116         if (ext_port > MUX_PORT_MAX || ext_port == 0) {
 117                 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
 118                         MUX_PORT_MAX);
 119                 ret = -EINVAL;
 120                 goto fail;
 121         }
 122
 123         /*
 124          * The port numbering in the hardware manual starts at 1, while
 125          * the audmux API expects it starts at 0.
 126          */
 127         int_port--;
 128         ext_port--;
 129         ret = imx_audmux_v2_configure_port(int_port,
 130                         IMX_AUDMUX_V2_PTCR_SYN |
 131                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 132                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 133                         IMX_AUDMUX_V2_PTCR_TFSDIR |
 134                         IMX_AUDMUX_V2_PTCR_TCLKDIR,
 135                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 136         if (ret) {
 137                 dev_err(dev, "audmux internal port setup failed\n");
 138                 return ret;
 139         }
 140         ret = imx_audmux_v2_configure_port(ext_port,
 141                         IMX_AUDMUX_V2_PTCR_SYN,
 142                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 143         if (ret) {
 144                 dev_err(dev, "audmux external port setup failed\n");
 145                 return ret;
 146         }
 147
 148         ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
 149         codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
 150         if (!ssi_np || !codec_np) {
 151                 dev_err(dev, "phandle missing or invalid\n");
 152                 ret = -EINVAL;
 153                 goto fail;
 154         }
 155
 156         ssi_pdev = of_find_device_by_node(ssi_np);
 157         if (!ssi_pdev) {
 158                 dev_err(dev, "failed to find SSI platform device\n");
 159                 ret = -EINVAL;
 160                 goto fail;
 161         }
 162
 163         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 164         if (!data) {
 165                 ret = -ENOMEM;
 166                 goto put_device;
 167         }
 168
 169         comp = devm_kzalloc(dev, 2 * sizeof(*comp), GFP_KERNEL);
 170         if (!comp) {
 171                 ret = -ENOMEM;
 172                 goto put_device;
 173         }
 174
 175         data->dev = dev;
 176
 177         data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
 178
 179         /*
 180          * CPU == Platform
 181          * platform is using soc-generic-dmaengine-pcm
 182          */
 183         data->dai.cpus          =
 184         data->dai.platforms     = &comp[0];
 185         data->dai.codecs        = &comp[1];
 186
 187         data->dai.num_cpus      = 1;
 188         data->dai.num_codecs    = 1;
 189         data->dai.num_platforms = 1;
 190
 191         data->dai.name = "hifi";
 192         data->dai.stream_name = "hifi";
 193         data->dai.codecs->dai_name = "es8328-hifi-analog";
 194         data->dai.codecs->of_node = codec_np;
 195         data->dai.cpus->of_node = ssi_np;
 196         data->dai.init = &imx_es8328_dai_init;
 197         data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 198                             SND_SOC_DAIFMT_CBP_CFP;
 199
 200         data->card.dev = dev;
 201         data->card.dapm_widgets = imx_es8328_dapm_widgets;
 202         data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
 203         data->card.controls = imx_es8328_controls;
 204         data->card.num_controls = ARRAY_SIZE(imx_es8328_controls);
 205         ret = snd_soc_of_parse_card_name(&data->card, "model");
 206         if (ret) {
 207                 dev_err(dev, "Unable to parse card name\n");
 208                 goto put_device;
 209         }
 210         ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 211         if (ret) {
 212                 dev_err(dev, "Unable to parse routing: %d\n", ret);
 213                 goto put_device;
 214         }
 215         data->card.num_links = 1;
 216         data->card.owner = THIS_MODULE;
 217         data->card.dai_link = &data->dai;
 218
 219         ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
 220         if (ret) {
 221                 dev_err(dev, "Unable to register: %d\n", ret);
 222                 goto put_device;
 223         }
 224
 225         platform_set_drvdata(pdev, data);
 226 put_device:
 227         put_device(&ssi_pdev->dev);
 228 fail:
 229         of_node_put(ssi_np);
 230         of_node_put(codec_np);
 231
 232         return ret;
 233 }
 234
 235 static const struct of_device_id imx_es8328_dt_ids[] = {
 236         { .compatible = "fsl,imx-audio-es8328", },
 237         { /* sentinel */ }
 238 };
 239 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
 240
 241 static struct platform_driver imx_es8328_driver = {
 242         .driver = {
 243                 .name = "imx-es8328",
 244                 .of_match_table = imx_es8328_dt_ids,
 245         },
 246         .probe = imx_es8328_probe,
 247 };
 248 module_platform_driver(imx_es8328_driver);
 249
 250 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
 251 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
 252 MODULE_LICENSE("GPL v2");
 253 MODULE_ALIAS("platform:imx-audio-es8328");