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70b0c75ae1
Add debug parameter for snd-sof-acpi. One of the usages for this debug parameter to disable pm_runtime, which can be useful for platform bringup, or keep the parent device active while enabling pm_runtime for child devices (e.g. with SoundWire or MFD). This can also be useful to measure suspend-resume latencies or child devices. Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20191008164443.1358-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
270 lines
7.3 KiB
C
270 lines
7.3 KiB
C
// SPDX-License-Identifier: (GPL-2.0 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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/* 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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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HASWELL)
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static const struct sof_dev_desc sof_acpi_haswell_desc = {
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.machines = snd_soc_acpi_intel_haswell_machines,
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.resindex_lpe_base = 0,
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.resindex_pcicfg_base = 1,
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.resindex_imr_base = -1,
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.irqindex_host_ipc = 0,
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.chip_info = &hsw_chip_info,
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.default_fw_path = "intel/sof",
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.default_tplg_path = "intel/sof-tplg",
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.nocodec_fw_filename = "sof-hsw.ri",
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.nocodec_tplg_filename = "sof-hsw-nocodec.tplg",
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.ops = &sof_hsw_ops,
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.arch_ops = &sof_xtensa_arch_ops
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};
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#endif
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
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static const struct sof_dev_desc sof_acpi_broadwell_desc = {
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.machines = snd_soc_acpi_intel_broadwell_machines,
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.resindex_lpe_base = 0,
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.resindex_pcicfg_base = 1,
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.resindex_imr_base = -1,
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.irqindex_host_ipc = 0,
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.chip_info = &bdw_chip_info,
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.default_fw_path = "intel/sof",
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.default_tplg_path = "intel/sof-tplg",
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.nocodec_fw_filename = "sof-bdw.ri",
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.nocodec_tplg_filename = "sof-bdw-nocodec.tplg",
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.ops = &sof_bdw_ops,
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.arch_ops = &sof_xtensa_arch_ops
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};
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#endif
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
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/* BYTCR uses different IRQ index */
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static const struct sof_dev_desc sof_acpi_baytrailcr_desc = {
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.machines = snd_soc_acpi_intel_baytrail_machines,
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.resindex_lpe_base = 0,
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.resindex_pcicfg_base = 1,
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.resindex_imr_base = 2,
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.irqindex_host_ipc = 0,
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.chip_info = &byt_chip_info,
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.default_fw_path = "intel/sof",
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.default_tplg_path = "intel/sof-tplg",
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.nocodec_fw_filename = "sof-byt.ri",
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.nocodec_tplg_filename = "sof-byt-nocodec.tplg",
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.ops = &sof_byt_ops,
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.arch_ops = &sof_xtensa_arch_ops
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};
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static const struct sof_dev_desc sof_acpi_baytrail_desc = {
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.machines = snd_soc_acpi_intel_baytrail_machines,
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.resindex_lpe_base = 0,
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.resindex_pcicfg_base = 1,
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.resindex_imr_base = 2,
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.irqindex_host_ipc = 5,
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.chip_info = &byt_chip_info,
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.default_fw_path = "intel/sof",
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.default_tplg_path = "intel/sof-tplg",
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.nocodec_fw_filename = "sof-byt.ri",
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.nocodec_tplg_filename = "sof-byt-nocodec.tplg",
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.ops = &sof_byt_ops,
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.arch_ops = &sof_xtensa_arch_ops
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};
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static const struct sof_dev_desc sof_acpi_cherrytrail_desc = {
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.machines = snd_soc_acpi_intel_cherrytrail_machines,
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.resindex_lpe_base = 0,
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.resindex_pcicfg_base = 1,
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.resindex_imr_base = 2,
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.irqindex_host_ipc = 5,
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.chip_info = &cht_chip_info,
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.default_fw_path = "intel/sof",
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.default_tplg_path = "intel/sof-tplg",
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.nocodec_fw_filename = "sof-cht.ri",
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.nocodec_tplg_filename = "sof-cht-nocodec.tplg",
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.ops = &sof_cht_ops,
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.arch_ops = &sof_xtensa_arch_ops
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};
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#endif
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static 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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static void sof_acpi_probe_complete(struct device *dev)
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{
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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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static int sof_acpi_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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const struct sof_dev_desc *desc;
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struct snd_soc_acpi_mach *mach;
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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(&pdev->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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desc = device_get_match_data(dev);
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if (!desc)
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return -ENODEV;
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
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if (desc == &sof_acpi_baytrail_desc && soc_intel_is_byt_cr(pdev))
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desc = &sof_acpi_baytrailcr_desc;
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#endif
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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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#if IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE)
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/* force nocodec mode */
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dev_warn(dev, "Force to use nocodec mode\n");
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mach = devm_kzalloc(dev, sizeof(*mach), GFP_KERNEL);
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if (!mach)
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return -ENOMEM;
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ret = sof_nocodec_setup(dev, sof_pdata, mach, desc, ops);
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if (ret < 0)
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return ret;
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#else
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/* find machine */
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mach = snd_soc_acpi_find_machine(desc->machines);
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if (!mach) {
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dev_warn(dev, "warning: No matching ASoC machine driver found\n");
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} else {
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sof_pdata->fw_filename = mach->sof_fw_filename;
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sof_pdata->tplg_filename = mach->sof_tplg_filename;
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}
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#endif
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if (mach) {
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mach->mach_params.platform = dev_name(dev);
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mach->mach_params.acpi_ipc_irq_index = desc->irqindex_host_ipc;
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}
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sof_pdata->machine = mach;
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sof_pdata->desc = desc;
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sof_pdata->dev = &pdev->dev;
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sof_pdata->platform = dev_name(dev);
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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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static int sof_acpi_remove(struct platform_device *pdev)
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{
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if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))
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pm_runtime_disable(&pdev->dev);
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/* call sof helper for DSP hardware remove */
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snd_sof_device_remove(&pdev->dev);
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return 0;
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}
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static const struct acpi_device_id sof_acpi_match[] = {
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HASWELL)
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{ "INT33C8", (unsigned long)&sof_acpi_haswell_desc },
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#endif
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
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{ "INT3438", (unsigned long)&sof_acpi_broadwell_desc },
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#endif
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
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{ "80860F28", (unsigned long)&sof_acpi_baytrail_desc },
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{ "808622A8", (unsigned long)&sof_acpi_cherrytrail_desc },
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#endif
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{ }
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};
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MODULE_DEVICE_TABLE(acpi, sof_acpi_match);
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/* acpi_driver definition */
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static struct platform_driver snd_sof_acpi_driver = {
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.probe = sof_acpi_probe,
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.remove = sof_acpi_remove,
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.driver = {
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.name = "sof-audio-acpi",
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.pm = &sof_acpi_pm,
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.acpi_match_table = ACPI_PTR(sof_acpi_match),
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},
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};
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module_platform_driver(snd_sof_acpi_driver);
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MODULE_LICENSE("Dual BSD/GPL");
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