sound/soc/sof/sof-of-dev.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
   2 //
   3 // Copyright 2019 NXP
   4 //
   5 // Author: Daniel Baluta <daniel.baluta@nxp.com>
   6 //
   7
   8 #include <linux/firmware.h>
   9 #include <linux/module.h>
  10 #include <linux/pm_runtime.h>
  11 #include <sound/sof.h>
  12
  13 #include "ops.h"
  14
  15 extern struct snd_sof_dsp_ops sof_imx8_ops;
  16
  17 /* platform specific devices */
  18 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
  19 static struct sof_dev_desc sof_of_imx8qxp_desc = {
  20         .default_fw_path = "imx/sof",
  21         .default_tplg_path = "imx/sof-tplg",
  22         .default_fw_filename = "sof-imx8.ri",
  23         .nocodec_fw_filename = "sof-imx8.ri",
  24         .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
  25         .ops = &sof_imx8_ops,
  26 };
  27 #endif
  28
  29 static const struct dev_pm_ops sof_of_pm = {
  30         SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
  31         SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
  32                            NULL)
  33 };
  34
  35 static void sof_of_probe_complete(struct device *dev)
  36 {
  37         /* allow runtime_pm */
  38         pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
  39         pm_runtime_use_autosuspend(dev);
  40         pm_runtime_enable(dev);
  41 }
  42
  43 static int sof_of_probe(struct platform_device *pdev)
  44 {
  45         struct device *dev = &pdev->dev;
  46         const struct sof_dev_desc *desc;
  47         struct snd_sof_pdata *sof_pdata;
  48         const struct snd_sof_dsp_ops *ops;
  49         int ret;
  50
  51         dev_info(&pdev->dev, "DT DSP detected");
  52
  53         sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
  54         if (!sof_pdata)
  55                 return -ENOMEM;
  56
  57         desc = device_get_match_data(dev);
  58         if (!desc)
  59                 return -ENODEV;
  60
  61         /* get ops for platform */
  62         ops = desc->ops;
  63         if (!ops) {
  64                 dev_err(dev, "error: no matching DT descriptor ops\n");
  65                 return -ENODEV;
  66         }
  67
  68         sof_pdata->desc = desc;
  69         sof_pdata->dev = &pdev->dev;
  70         sof_pdata->fw_filename = desc->default_fw_filename;
  71
  72         /* TODO: read alternate fw and tplg filenames from DT */
  73         sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
  74         sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
  75
  76 #if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
  77         /* set callback to enable runtime_pm */
  78         sof_pdata->sof_probe_complete = sof_of_probe_complete;
  79 #endif
  80          /* call sof helper for DSP hardware probe */
  81         ret = snd_sof_device_probe(dev, sof_pdata);
  82         if (ret) {
  83                 dev_err(dev, "error: failed to probe DSP hardware\n");
  84                 return ret;
  85         }
  86
  87 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
  88         sof_of_probe_complete(dev);
  89 #endif
  90
  91         return ret;
  92 }
  93
  94 static int sof_of_remove(struct platform_device *pdev)
  95 {
  96         pm_runtime_disable(&pdev->dev);
  97
  98         /* call sof helper for DSP hardware remove */
  99         snd_sof_device_remove(&pdev->dev);
 100
 101         return 0;
 102 }
 103
 104 static const struct of_device_id sof_of_ids[] = {
 105 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
 106         { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
 107 #endif
 108         { }
 109 };
 110 MODULE_DEVICE_TABLE(of, sof_of_ids);
 111
 112 /* DT driver definition */
 113 static struct platform_driver snd_sof_of_driver = {
 114         .probe = sof_of_probe,
 115         .remove = sof_of_remove,
 116         .driver = {
 117                 .name = "sof-audio-of",
 118                 .pm = &sof_of_pm,
 119                 .of_match_table = sof_of_ids,
 120         },
 121 };
 122 module_platform_driver(snd_sof_of_driver);
 123
 124 MODULE_LICENSE("Dual BSD/GPL");