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         u32 int_port, ext_port;
  78         int ret;
  79         struct device *dev = &pdev->dev;
  80
  81         ret = of_property_read_u32(np, "mux-int-port", &int_port);
  82         if (ret) {
  83                 dev_err(dev, "mux-int-port missing or invalid\n");
  84                 goto fail;
  85         }
  86         if (int_port > MUX_PORT_MAX || int_port == 0) {
  87                 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
  88                         MUX_PORT_MAX);
  89                 goto fail;
  90         }
  91
  92         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
  93         if (ret) {
  94                 dev_err(dev, "mux-ext-port missing or invalid\n");
  95                 goto fail;
  96         }
  97         if (ext_port > MUX_PORT_MAX || ext_port == 0) {
  98                 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
  99                         MUX_PORT_MAX);
 100                 ret = -EINVAL;
 101                 goto fail;
 102         }
 103
 104         /*
 105          * The port numbering in the hardware manual starts at 1, while
 106          * the audmux API expects it starts at 0.
 107          */
 108         int_port--;
 109         ext_port--;
 110         ret = imx_audmux_v2_configure_port(int_port,
 111                         IMX_AUDMUX_V2_PTCR_SYN |
 112                         IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 113                         IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 114                         IMX_AUDMUX_V2_PTCR_TFSDIR |
 115                         IMX_AUDMUX_V2_PTCR_TCLKDIR,
 116                         IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 117         if (ret) {
 118                 dev_err(dev, "audmux internal port setup failed\n");
 119                 return ret;
 120         }
 121         ret = imx_audmux_v2_configure_port(ext_port,
 122                         IMX_AUDMUX_V2_PTCR_SYN,
 123                         IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 124         if (ret) {
 125                 dev_err(dev, "audmux external port setup failed\n");
 126                 return ret;
 127         }
 128
 129         ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
 130         codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
 131         if (!ssi_np || !codec_np) {
 132                 dev_err(dev, "phandle missing or invalid\n");
 133                 ret = -EINVAL;
 134                 goto fail;
 135         }
 136
 137         ssi_pdev = of_find_device_by_node(ssi_np);
 138         if (!ssi_pdev) {
 139                 dev_err(dev, "failed to find SSI platform device\n");
 140                 ret = -EINVAL;
 141                 goto fail;
 142         }
 143
 144         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 145         if (!data) {
 146                 ret = -ENOMEM;
 147                 goto fail;
 148         }
 149
 150         data->dev = dev;
 151
 152         data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
 153
 154         data->dai.name = "hifi";
 155         data->dai.stream_name = "hifi";
 156         data->dai.codec_dai_name = "es8328-hifi-analog";
 157         data->dai.codec_of_node = codec_np;
 158         data->dai.cpu_of_node = ssi_np;
 159         data->dai.platform_of_node = ssi_np;
 160         data->dai.init = &imx_es8328_dai_init;
 161         data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 162                             SND_SOC_DAIFMT_CBM_CFM;
 163
 164         data->card.dev = dev;
 165         data->card.dapm_widgets = imx_es8328_dapm_widgets;
 166         data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
 167         ret = snd_soc_of_parse_card_name(&data->card, "model");
 168         if (ret) {
 169                 dev_err(dev, "Unable to parse card name\n");
 170                 goto fail;
 171         }
 172         ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
 173         if (ret) {
 174                 dev_err(dev, "Unable to parse routing: %d\n", ret);
 175                 goto fail;
 176         }
 177         data->card.num_links = 1;
 178         data->card.owner = THIS_MODULE;
 179         data->card.dai_link = &data->dai;
 180
 181         ret = snd_soc_register_card(&data->card);
 182         if (ret) {
 183                 dev_err(dev, "Unable to register: %d\n", ret);
 184                 goto fail;
 185         }
 186
 187         platform_set_drvdata(pdev, data);
 188 fail:
 189         of_node_put(ssi_np);
 190         of_node_put(codec_np);
 191
 192         return ret;
 193 }
 194
 195 static int imx_es8328_remove(struct platform_device *pdev)
 196 {
 197         struct imx_es8328_data *data = platform_get_drvdata(pdev);
 198
 199         snd_soc_unregister_card(&data->card);
 200
 201         return 0;
 202 }
 203
 204 static const struct of_device_id imx_es8328_dt_ids[] = {
 205         { .compatible = "fsl,imx-audio-es8328", },
 206         { /* sentinel */ }
 207 };
 208 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
 209
 210 static struct platform_driver imx_es8328_driver = {
 211         .driver = {
 212                 .name = "imx-es8328",
 213                 .of_match_table = imx_es8328_dt_ids,
 214         },
 215         .probe = imx_es8328_probe,
 216         .remove = imx_es8328_remove,
 217 };
 218 module_platform_driver(imx_es8328_driver);
 219
 220 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
 221 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
 222 MODULE_LICENSE("GPL v2");
 223 MODULE_ALIAS("platform:imx-audio-es8328");