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The SOF-ACPI driver is backwards from the normal Linux model, it has a generic driver that knows about all the specific drivers, as opposed to having hardware specific drivers that link against a common framework. This requires ugly Kconfig magic and leads to missed dependencies as seen in this link error: arm-linux-gnueabi-ld: sound/soc/sof/sof-pci-dev.o: in function `sof_acpi_probe': sof-pci-dev.c:(.text+0x1c): undefined reference to `snd_intel_dsp_driver_probe' Change it to use the normal probe order of starting with a specific device in a driver, turning the sof-acpi-dev.c driver into a library (exported symbols are name-spaced to avoid symbol pollution). For backwards-compatibility with previous Kconfigs, the default values for platform drivers uses the top-level ACPI configurations. The modules were also renamed to allow for gradual transitions in test scripts. Co-developed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Reviewed-by: Bard Liao <bard.liao@intel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210302003125.1178419-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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//
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#include <linux/acpi.h>
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <sound/soc-acpi.h>
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#include <sound/soc-acpi-intel-match.h>
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#include <sound/sof.h>
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#include "../intel/common/soc-intel-quirks.h"
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#include "ops.h"
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#include "sof-acpi-dev.h"
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/* platform specific devices */
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#include "intel/shim.h"
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static char *fw_path;
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module_param(fw_path, charp, 0444);
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MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");
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static char *tplg_path;
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module_param(tplg_path, charp, 0444);
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MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
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static int sof_acpi_debug;
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module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);
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MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");
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#define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)
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const struct dev_pm_ops sof_acpi_pm = {
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SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
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SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
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snd_sof_runtime_idle)
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};
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EXPORT_SYMBOL_NS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV);
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static void sof_acpi_probe_complete(struct device *dev)
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{
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dev_dbg(dev, "Completing SOF ACPI probe");
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if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)
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return;
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/* allow runtime_pm */
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pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
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pm_runtime_use_autosuspend(dev);
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pm_runtime_enable(dev);
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}
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int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc)
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{
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struct device *dev = &pdev->dev;
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struct snd_sof_pdata *sof_pdata;
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const struct snd_sof_dsp_ops *ops;
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int ret;
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dev_dbg(dev, "ACPI DSP detected");
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sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
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if (!sof_pdata)
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return -ENOMEM;
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/* get ops for platform */
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ops = desc->ops;
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if (!ops) {
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dev_err(dev, "error: no matching ACPI descriptor ops\n");
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return -ENODEV;
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}
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sof_pdata->desc = desc;
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sof_pdata->dev = &pdev->dev;
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sof_pdata->fw_filename = desc->default_fw_filename;
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/* alternate fw and tplg filenames ? */
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if (fw_path)
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sof_pdata->fw_filename_prefix = fw_path;
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else
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sof_pdata->fw_filename_prefix =
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sof_pdata->desc->default_fw_path;
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if (tplg_path)
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sof_pdata->tplg_filename_prefix = tplg_path;
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else
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sof_pdata->tplg_filename_prefix =
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sof_pdata->desc->default_tplg_path;
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
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/* set callback to enable runtime_pm */
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sof_pdata->sof_probe_complete = sof_acpi_probe_complete;
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#endif
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/* call sof helper for DSP hardware probe */
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ret = snd_sof_device_probe(dev, sof_pdata);
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if (ret) {
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dev_err(dev, "error: failed to probe DSP hardware!\n");
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return ret;
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}
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#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
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sof_acpi_probe_complete(dev);
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#endif
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return ret;
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}
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EXPORT_SYMBOL_NS(sof_acpi_probe, SND_SOC_SOF_ACPI_DEV);
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int sof_acpi_remove(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))
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pm_runtime_disable(dev);
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/* call sof helper for DSP hardware remove */
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snd_sof_device_remove(dev);
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return 0;
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}
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EXPORT_SYMBOL_NS(sof_acpi_remove, SND_SOC_SOF_ACPI_DEV);
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MODULE_LICENSE("Dual BSD/GPL");
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