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// 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/firmware.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/sof.h>
#include "ops.h"
#include "sof-pci-dev.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_pci_debug;
module_param_named(sof_pci_debug, sof_pci_debug, int, 0444);
MODULE_PARM_DESC(sof_pci_debug, "SOF PCI debug options (0x0 all off)");
static const char *sof_override_tplg_name;
#define SOF_PCI_DISABLE_PM_RUNTIME BIT(0)
static int sof_tplg_cb(const struct dmi_system_id *id)
{
sof_override_tplg_name = id->driver_data;
return 1;
}
static const struct dmi_system_id sof_tplg_table[] = {
{
.callback = sof_tplg_cb,
.matches = {
DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Volteer"),
DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98373_ALC5682I_I2S_UP4"),
},
.driver_data = "sof-tgl-rt5682-ssp0-max98373-ssp2.tplg",
},
{}
};
static const struct dmi_system_id community_key_platforms[] = {
{
.ident = "Up Squared",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),
}
},
{
.ident = "Up Extreme",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
DMI_MATCH(DMI_BOARD_NAME, "UP-WHL01"),
}
},
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{},
};
const struct dev_pm_ops sof_pci_pm = {
.prepare = snd_sof_prepare,
.complete = snd_sof_complete,
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_pci_pm, SND_SOC_SOF_PCI_DEV);
static void sof_pci_probe_complete(struct device *dev)
{
dev_dbg(dev, "Completing SOF PCI probe");
if (sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME)
return;
/* allow runtime_pm */
pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
pm_runtime_use_autosuspend(dev);
/*
* runtime pm for pci device is "forbidden" by default.
* so call pm_runtime_allow() to enable it.
*/
pm_runtime_allow(dev);
/* mark last_busy for pm_runtime to make sure not suspend immediately */
pm_runtime_mark_last_busy(dev);
/* follow recommendation in pci-driver.c to decrement usage counter */
pm_runtime_put_noidle(dev);
}
int sof_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
{
struct device *dev = &pci->dev;
const struct sof_dev_desc *desc =
(const struct sof_dev_desc *)pci_id->driver_data;
struct snd_sof_pdata *sof_pdata;
const struct snd_sof_dsp_ops *ops;
int ret;
dev_dbg(&pci->dev, "PCI DSP detected");
/* get ops for platform */
ops = desc->ops;
if (!ops) {
dev_err(dev, "error: no matching PCI descriptor ops\n");
return -ENODEV;
}
sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
if (!sof_pdata)
return -ENOMEM;
ret = pcim_enable_device(pci);
if (ret < 0)
return ret;
ret = pci_request_regions(pci, "Audio DSP");
if (ret < 0)
return ret;
sof_pdata->name = pci_name(pci);
sof_pdata->desc = (struct sof_dev_desc *)pci_id->driver_data;
sof_pdata->dev = dev;
sof_pdata->fw_filename = desc->default_fw_filename;
/*
* for platforms using the SOF community key, change the
* default path automatically to pick the right files from the
* linux-firmware tree. This can be overridden with the
* fw_path kernel parameter, e.g. for developers.
*/
/* alternate fw and tplg filenames ? */
if (fw_path) {
sof_pdata->fw_filename_prefix = fw_path;
dev_dbg(dev,
"Module parameter used, changed fw path to %s\n",
sof_pdata->fw_filename_prefix);
} else if (dmi_check_system(community_key_platforms)) {
sof_pdata->fw_filename_prefix =
devm_kasprintf(dev, GFP_KERNEL, "%s/%s",
sof_pdata->desc->default_fw_path,
"community");
dev_dbg(dev,
"Platform uses community key, changed fw path to %s\n",
sof_pdata->fw_filename_prefix);
} else {
sof_pdata->fw_filename_prefix =
sof_pdata->desc->default_fw_path;
}
if (tplg_path)
sof_pdata->tplg_filename_prefix = tplg_path;
else
sof_pdata->tplg_filename_prefix =
sof_pdata->desc->default_tplg_path;
dmi_check_system(sof_tplg_table);
if (sof_override_tplg_name)
sof_pdata->tplg_filename = sof_override_tplg_name;
#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
/* set callback to enable runtime_pm */
sof_pdata->sof_probe_complete = sof_pci_probe_complete;
#endif
/* call sof helper for DSP hardware probe */
ret = snd_sof_device_probe(dev, sof_pdata);
if (ret) {
dev_err(dev, "error: failed to probe DSP hardware!\n");
goto release_regions;
}
#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
sof_pci_probe_complete(dev);
#endif
return ret;
release_regions:
pci_release_regions(pci);
return ret;
}
EXPORT_SYMBOL_NS(sof_pci_probe, SND_SOC_SOF_PCI_DEV);
void sof_pci_remove(struct pci_dev *pci)
{
/* call sof helper for DSP hardware remove */
snd_sof_device_remove(&pci->dev);
/* follow recommendation in pci-driver.c to increment usage counter */
if (snd_sof_device_probe_completed(&pci->dev) &&
!(sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME))
pm_runtime_get_noresume(&pci->dev);
/* release pci regions and disable device */
pci_release_regions(pci);
}
EXPORT_SYMBOL_NS(sof_pci_remove, SND_SOC_SOF_PCI_DEV);
void sof_pci_shutdown(struct pci_dev *pci)
{
snd_sof_device_shutdown(&pci->dev);
}
EXPORT_SYMBOL_NS(sof_pci_shutdown, SND_SOC_SOF_PCI_DEV);
MODULE_LICENSE("Dual BSD/GPL");
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