1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
3 // This file is provided under a dual BSD/GPLv2 license. When using or
4 // redistributing this file, you may do so under either license.
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
8 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
11 #include <linux/acpi.h>
12 #include <linux/firmware.h>
13 #include <linux/module.h>
14 #include <linux/pm_runtime.h>
15 #include <sound/soc-acpi.h>
16 #include <sound/soc-acpi-intel-match.h>
17 #include <sound/sof.h>
18 #include "../intel/common/soc-intel-quirks.h"
20 #include "sof-acpi-dev.h"
22 /* platform specific devices */
23 #include "intel/shim.h"
26 module_param(fw_path, charp, 0444);
27 MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");
29 static char *tplg_path;
30 module_param(tplg_path, charp, 0444);
31 MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
33 static int sof_acpi_debug;
34 module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);
35 MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");
37 #define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)
39 const struct dev_pm_ops sof_acpi_pm = {
40 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
41 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
44 EXPORT_SYMBOL_NS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV);
46 static void sof_acpi_probe_complete(struct device *dev)
48 dev_dbg(dev, "Completing SOF ACPI probe");
50 if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)
53 /* allow runtime_pm */
54 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
55 pm_runtime_use_autosuspend(dev);
56 pm_runtime_enable(dev);
59 int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc)
61 struct device *dev = &pdev->dev;
62 struct snd_sof_pdata *sof_pdata;
63 const struct snd_sof_dsp_ops *ops;
65 dev_dbg(dev, "ACPI DSP detected");
67 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
71 /* get ops for platform */
74 dev_err(dev, "error: no matching ACPI descriptor ops\n");
78 sof_pdata->desc = desc;
79 sof_pdata->dev = &pdev->dev;
80 sof_pdata->fw_filename = desc->default_fw_filename;
82 /* alternate fw and tplg filenames ? */
84 sof_pdata->fw_filename_prefix = fw_path;
86 sof_pdata->fw_filename_prefix =
87 sof_pdata->desc->default_fw_path;
90 sof_pdata->tplg_filename_prefix = tplg_path;
92 sof_pdata->tplg_filename_prefix =
93 sof_pdata->desc->default_tplg_path;
95 /* set callback to be called on successful device probe to enable runtime_pm */
96 sof_pdata->sof_probe_complete = sof_acpi_probe_complete;
98 /* call sof helper for DSP hardware probe */
99 return snd_sof_device_probe(dev, sof_pdata);
101 EXPORT_SYMBOL_NS(sof_acpi_probe, SND_SOC_SOF_ACPI_DEV);
103 int sof_acpi_remove(struct platform_device *pdev)
105 struct device *dev = &pdev->dev;
107 if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))
108 pm_runtime_disable(dev);
110 /* call sof helper for DSP hardware remove */
111 snd_sof_device_remove(dev);
115 EXPORT_SYMBOL_NS(sof_acpi_remove, SND_SOC_SOF_ACPI_DEV);
117 MODULE_LICENSE("Dual BSD/GPL");