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

DEFINITIONS

1. sof_of_probe_complete
2. sof_of_probe
3. sof_of_remove

   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         .nocodec_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         /*TODO: create a generic snd_soc_xxx_mach */
  47         struct snd_soc_acpi_mach *mach;
  48         struct snd_sof_pdata *sof_pdata;
  49         const struct snd_sof_dsp_ops *ops;
  50         int ret;
  51 
  52         dev_info(&pdev->dev, "DT DSP detected");
  53 
  54         sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
  55         if (!sof_pdata)
  56                 return -ENOMEM;
  57 
  58         desc = device_get_match_data(dev);
  59         if (!desc)
  60                 return -ENODEV;
  61 
  62         /* get ops for platform */
  63         ops = desc->ops;
  64         if (!ops) {
  65                 dev_err(dev, "error: no matching DT descriptor ops\n");
  66                 return -ENODEV;
  67         }
  68 
  69 #if IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)
  70         /* force nocodec mode */
  71         dev_warn(dev, "Force to use nocodec mode\n");
  72         mach = devm_kzalloc(dev, sizeof(*mach), GFP_KERNEL);
  73         if (!mach)
  74                 return -ENOMEM;
  75         ret = sof_nocodec_setup(dev, sof_pdata, mach, desc, ops);
  76         if (ret < 0)
  77                 return ret;
  78 #else
  79         /* TODO: implement case where we actually have a codec */
  80         return -ENODEV;
  81 #endif
  82 
  83         if (mach)
  84                 mach->mach_params.platform = dev_name(dev);
  85 
  86         sof_pdata->machine = mach;
  87         sof_pdata->desc = desc;
  88         sof_pdata->dev = &pdev->dev;
  89         sof_pdata->platform = dev_name(dev);
  90 
  91         /* TODO: read alternate fw and tplg filenames from DT */
  92         sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
  93         sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
  94 
  95 #if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
  96         /* set callback to enable runtime_pm */
  97         sof_pdata->sof_probe_complete = sof_of_probe_complete;
  98 #endif
  99          /* call sof helper for DSP hardware probe */
 100         ret = snd_sof_device_probe(dev, sof_pdata);
 101         if (ret) {
 102                 dev_err(dev, "error: failed to probe DSP hardware\n");
 103                 return ret;
 104         }
 105 
 106 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
 107         sof_of_probe_complete(dev);
 108 #endif
 109 
 110         return ret;
 111 }
 112 
 113 static int sof_of_remove(struct platform_device *pdev)
 114 {
 115         pm_runtime_disable(&pdev->dev);
 116 
 117         /* call sof helper for DSP hardware remove */
 118         snd_sof_device_remove(&pdev->dev);
 119 
 120         return 0;
 121 }
 122 
 123 static const struct of_device_id sof_of_ids[] = {
 124 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
 125         { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
 126 #endif
 127         { }
 128 };
 129 MODULE_DEVICE_TABLE(of, sof_of_ids);
 130 
 131 /* DT driver definition */
 132 static struct platform_driver snd_sof_of_driver = {
 133         .probe = sof_of_probe,
 134         .remove = sof_of_remove,
 135         .driver = {
 136                 .name = "sof-audio-of",
 137                 .pm = &sof_of_pm,
 138                 .of_match_table = sof_of_ids,
 139         },
 140 };
 141 module_platform_driver(snd_sof_of_driver);
 142 
 143 MODULE_LICENSE("Dual BSD/GPL");