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-rw-r--r--sound/soc/sof/sof-acpi-dev.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-acpi-dev.c b/sound/soc/sof/sof-acpi-dev.c
new file mode 100644
index 0000000000..1b04dcb332
--- /dev/null
+++ b/sound/soc/sof/sof-acpi-dev.c
@@ -0,0 +1,114 @@
+// 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");