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 extern struct snd_sof_dsp_ops sof_imx8x_ops;
  17
  18 /* platform specific devices */
  19 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
  20 static struct sof_dev_desc sof_of_imx8qxp_desc = {
  21         .default_fw_path = "imx/sof",
  22         .default_tplg_path = "imx/sof-tplg",
  23         .default_fw_filename = "sof-imx8x.ri",
  24         .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
  25         .ops = &sof_imx8x_ops,
  26 };
  27
  28 static struct sof_dev_desc sof_of_imx8qm_desc = {
  29         .default_fw_path = "imx/sof",
  30         .default_tplg_path = "imx/sof-tplg",
  31         .default_fw_filename = "sof-imx8.ri",
  32         .nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
  33         .ops = &sof_imx8_ops,
  34 };
  35 #endif
  36
  37 static const struct dev_pm_ops sof_of_pm = {
  38         SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
  39         SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
  40                            NULL)
  41 };
  42
  43 static void sof_of_probe_complete(struct device *dev)
  44 {
  45         /* allow runtime_pm */
  46         pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
  47         pm_runtime_use_autosuspend(dev);
  48         pm_runtime_enable(dev);
  49 }
  50
  51 static int sof_of_probe(struct platform_device *pdev)
  52 {
  53         struct device *dev = &pdev->dev;
  54         const struct sof_dev_desc *desc;
  55         struct snd_sof_pdata *sof_pdata;
  56         const struct snd_sof_dsp_ops *ops;
  57         int ret;
  58
  59         dev_info(&pdev->dev, "DT DSP detected");
  60
  61         sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
  62         if (!sof_pdata)
  63                 return -ENOMEM;
  64
  65         desc = device_get_match_data(dev);
  66         if (!desc)
  67                 return -ENODEV;
  68
  69         /* get ops for platform */
  70         ops = desc->ops;
  71         if (!ops) {
  72                 dev_err(dev, "error: no matching DT descriptor ops\n");
  73                 return -ENODEV;
  74         }
  75
  76         sof_pdata->desc = desc;
  77         sof_pdata->dev = &pdev->dev;
  78         sof_pdata->fw_filename = desc->default_fw_filename;
  79
  80         /* TODO: read alternate fw and tplg filenames from DT */
  81         sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
  82         sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
  83
  84 #if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
  85         /* set callback to enable runtime_pm */
  86         sof_pdata->sof_probe_complete = sof_of_probe_complete;
  87 #endif
  88          /* call sof helper for DSP hardware probe */
  89         ret = snd_sof_device_probe(dev, sof_pdata);
  90         if (ret) {
  91                 dev_err(dev, "error: failed to probe DSP hardware\n");
  92                 return ret;
  93         }
  94
  95 #if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
  96         sof_of_probe_complete(dev);
  97 #endif
  98
  99         return ret;
 100 }
 101
 102 static int sof_of_remove(struct platform_device *pdev)
 103 {
 104         pm_runtime_disable(&pdev->dev);
 105
 106         /* call sof helper for DSP hardware remove */
 107         snd_sof_device_remove(&pdev->dev);
 108
 109         return 0;
 110 }
 111
 112 static const struct of_device_id sof_of_ids[] = {
 113 #if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
 114         { .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
 115         { .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc},
 116 #endif
 117         { }
 118 };
 119 MODULE_DEVICE_TABLE(of, sof_of_ids);
 120
 121 /* DT driver definition */
 122 static struct platform_driver snd_sof_of_driver = {
 123         .probe = sof_of_probe,
 124         .remove = sof_of_remove,
 125         .driver = {
 126                 .name = "sof-audio-of",
 127                 .pm = &sof_of_pm,
 128                 .of_match_table = sof_of_ids,
 129         },
 130 };
 131 module_platform_driver(snd_sof_of_driver);
 132
 133 MODULE_LICENSE("Dual BSD/GPL");