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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) // // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // // Copyright(c) 2018 Intel Corporation. All rights reserved. // // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> // #include <linux/acpi.h> #include <linux/firmware.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <sound/soc-acpi.h> #include <sound/soc-acpi-intel-match.h> #include <sound/sof.h> #include "../intel/common/soc-intel-quirks.h" #include "ops.h" #include "sof-acpi-dev.h" /* platform specific devices */ #include "intel/shim.h" static char *fw_path; module_param(fw_path, charp, 0444); MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware."); static char *tplg_path; module_param(tplg_path, charp, 0444); MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology."); static int sof_acpi_debug; module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444); MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)"); #define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0) const struct dev_pm_ops sof_acpi_pm = { SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, snd_sof_runtime_idle) }; EXPORT_SYMBOL_NS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV); static void sof_acpi_probe_complete(struct device *dev) { dev_dbg(dev, "Completing SOF ACPI probe"); if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME) return; /* allow runtime_pm */ pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS); pm_runtime_use_autosuspend(dev); pm_runtime_enable(dev); } int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc) { struct device *dev = &pdev->dev; struct snd_sof_pdata *sof_pdata; dev_dbg(dev, "ACPI DSP detected"); sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL); if (!sof_pdata) return -ENOMEM; if (!desc->ops) { dev_err(dev, "error: no matching ACPI descriptor ops\n"); return -ENODEV; } sof_pdata->desc = desc; sof_pdata->dev = &pdev->dev; sof_pdata->fw_filename = desc->default_fw_filename[SOF_IPC]; /* alternate fw and tplg filenames ? */ if (fw_path) sof_pdata->fw_filename_prefix = fw_path; else sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path[SOF_IPC]; if (tplg_path) sof_pdata->tplg_filename_prefix = tplg_path; else sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path[SOF_IPC]; /* set callback to be called on successful device probe to enable runtime_pm */ sof_pdata->sof_probe_complete = sof_acpi_probe_complete; /* call sof helper for DSP hardware probe */ return snd_sof_device_probe(dev, sof_pdata); } EXPORT_SYMBOL_NS(sof_acpi_probe, SND_SOC_SOF_ACPI_DEV); int sof_acpi_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)) pm_runtime_disable(dev); /* call sof helper for DSP hardware remove */ snd_sof_device_remove(dev); return 0; } EXPORT_SYMBOL_NS(sof_acpi_remove, SND_SOC_SOF_ACPI_DEV); MODULE_LICENSE("Dual BSD/GPL"); |