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