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linux-next/sound/hda/intel-dsp-config.c
Pierre-Louis Bossart 08c2a4bc9f ALSA: hda: move Intel SoundWire ACPI scan to dedicated module 
The ACPI scan capabilities is called from the intel-dspconfig as well
as the SOF/HDaudio drivers. This creates dependencies and randconfig issues
when HDaudio and SOF/SoundWire are not all configured as modules.

To simplify Kconfig dependencies between HDAudio, SoundWire, SOF and
intel-dspconfig, move the ACPI scan helpers to a dedicated
module. This follows the same idea as NHLT helpers which are already
handled as a dedicated module.

The only functional change is that the kernel parameter to filter
links is now handled by a different module, but that was only provided
for developers needing work-arounds for early BIOS releases.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
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/20210302003125.1178419-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-03-02 15:33:00 +01:00

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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Jaroslav Kysela <perex@perex.cz>
#include <linux/acpi.h>
#include <linux/bits.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_intel.h>
#include <sound/core.h>
#include <sound/intel-dsp-config.h>
#include <sound/intel-nhlt.h>
static int dsp_driver;
module_param(dsp_driver, int, 0444);
MODULE_PARM_DESC(dsp_driver, "Force the DSP driver for Intel DSP (0=auto, 1=legacy, 2=SST, 3=SOF)");
#define FLAG_SST BIT(0)
#define FLAG_SOF BIT(1)
#define FLAG_SST_ONLY_IF_DMIC BIT(15)
#define FLAG_SOF_ONLY_IF_DMIC BIT(16)
#define FLAG_SOF_ONLY_IF_SOUNDWIRE BIT(17)
#define FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE (FLAG_SOF_ONLY_IF_DMIC | \
FLAG_SOF_ONLY_IF_SOUNDWIRE)
struct config_entry {
u32 flags;
u16 device;
u8 acpi_hid[ACPI_ID_LEN];
const struct dmi_system_id *dmi_table;
};
/*
* configuration table
* - the order of similar PCI ID entries is important!
* - the first successful match will win
*/
static const struct config_entry config_table[] = {
/* Merrifield */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_MERRIFIELD)
{
.flags = FLAG_SOF,
.device = 0x119a,
},
#endif
/* Broxton-T */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
{
.flags = FLAG_SOF,
.device = 0x1a98,
},
#endif
/*
* Apollolake (Broxton-P)
* the legacy HDAudio driver is used except on Up Squared (SOF) and
* Chromebooks (SST)
*/
#if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
{
.flags = FLAG_SOF,
.device = 0x5a98,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Up Squared",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),
}
},
{}
}
},
#endif
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL)
{
.flags = FLAG_SST,
.device = 0x5a98,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
#endif
/*
* Skylake and Kabylake use legacy HDAudio driver except for Google
* Chromebooks (SST)
*/
/* Sunrise Point-LP */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL)
{
.flags = FLAG_SST,
.device = 0x9d70,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
.device = 0x9d70,
},
#endif
/* Kabylake-LP */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL)
{
.flags = FLAG_SST,
.device = 0x9d71,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
.device = 0x9d71,
},
#endif
/*
* Geminilake uses legacy HDAudio driver except for Google
* Chromebooks
*/
/* Geminilake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_GEMINILAKE)
{
.flags = FLAG_SOF,
.device = 0x3198,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
#endif
/*
* CoffeeLake, CannonLake, CometLake, IceLake, TigerLake use legacy
* HDAudio driver except for Google Chromebooks and when DMICs are
* present. Two cases are required since Coreboot does not expose NHLT
* tables.
*
* When the Chromebook quirk is not present, it's based on information
* that no such device exists. When the quirk is present, it could be
* either based on product information or a placeholder.
*/
/* Cannonlake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_CANNONLAKE)
{
.flags = FLAG_SOF,
.device = 0x9dc8,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x9dc8,
},
#endif
/* Coffelake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_COFFEELAKE)
{
.flags = FLAG_SOF,
.device = 0xa348,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0xa348,
},
#endif
#if IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE)
/* Cometlake-LP */
{
.flags = FLAG_SOF,
.device = 0x02c8,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "09C6")
},
},
{
/* early version of SKU 09C6 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0983")
},
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x02c8,
},
/* Cometlake-H */
{
.flags = FLAG_SOF,
.device = 0x06c8,
.dmi_table = (const struct dmi_system_id []) {
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "098F"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0990"),
},
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x06c8,
},
#endif
/* Icelake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_ICELAKE)
{
.flags = FLAG_SOF,
.device = 0x34c8,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x34c8,
},
#endif
/* Tigerlake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_TIGERLAKE)
{
.flags = FLAG_SOF,
.device = 0xa0c8,
.dmi_table = (const struct dmi_system_id []) {
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{}
}
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0xa0c8,
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x43c8,
},
#endif
/* Elkhart Lake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_ELKHARTLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x4b55,
},
#endif
/* Alder Lake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_ALDERLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x7ad0,
},
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x51c8,
},
#endif
};
static const struct config_entry *snd_intel_dsp_find_config
(struct pci_dev *pci, const struct config_entry *table, u32 len)
{
u16 device;
device = pci->device;
for (; len > 0; len--, table++) {
if (table->device != device)
continue;
if (table->dmi_table && !dmi_check_system(table->dmi_table))
continue;
return table;
}
return NULL;
}
static int snd_intel_dsp_check_dmic(struct pci_dev *pci)
{
struct nhlt_acpi_table *nhlt;
int ret = 0;
nhlt = intel_nhlt_init(&pci->dev);
if (nhlt) {
if (intel_nhlt_get_dmic_geo(&pci->dev, nhlt))
ret = 1;
intel_nhlt_free(nhlt);
}
return ret;
}
#if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)
static int snd_intel_dsp_check_soundwire(struct pci_dev *pci)
{
struct sdw_intel_acpi_info info;
acpi_handle handle;
int ret;
handle = ACPI_HANDLE(&pci->dev);
ret = sdw_intel_acpi_scan(handle, &info);
if (ret < 0)
return ret;
return info.link_mask;
}
#else
static int snd_intel_dsp_check_soundwire(struct pci_dev *pci)
{
return 0;
}
#endif
int snd_intel_dsp_driver_probe(struct pci_dev *pci)
{
const struct config_entry *cfg;
/* Intel vendor only */
if (pci->vendor != 0x8086)
return SND_INTEL_DSP_DRIVER_ANY;
/*
* Legacy devices don't have a PCI-based DSP and use HDaudio
* for HDMI/DP support, ignore kernel parameter
*/
switch (pci->device) {
case 0x160c: /* Broadwell */
case 0x0a0c: /* Haswell */
case 0x0c0c:
case 0x0d0c:
case 0x0f04: /* Baytrail */
case 0x2284: /* Braswell */
return SND_INTEL_DSP_DRIVER_ANY;
}
if (dsp_driver > 0 && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
return dsp_driver;
/*
* detect DSP by checking class/subclass/prog-id information
* class=04 subclass 03 prog-if 00: no DSP, use legacy driver
* class=04 subclass 01 prog-if 00: DSP is present
* (and may be required e.g. for DMIC or SSP support)
* class=04 subclass 03 prog-if 80: use DSP or legacy mode
*/
if (pci->class == 0x040300)
return SND_INTEL_DSP_DRIVER_LEGACY;
if (pci->class != 0x040100 && pci->class != 0x040380) {
dev_err(&pci->dev, "Unknown PCI class/subclass/prog-if information (0x%06x) found, selecting HDAudio legacy driver\n", pci->class);
return SND_INTEL_DSP_DRIVER_LEGACY;
}
dev_info(&pci->dev, "DSP detected with PCI class/subclass/prog-if info 0x%06x\n", pci->class);
/* find the configuration for the specific device */
cfg = snd_intel_dsp_find_config(pci, config_table, ARRAY_SIZE(config_table));
if (!cfg)
return SND_INTEL_DSP_DRIVER_ANY;
if (cfg->flags & FLAG_SOF) {
if (cfg->flags & FLAG_SOF_ONLY_IF_SOUNDWIRE &&
snd_intel_dsp_check_soundwire(pci) > 0) {
dev_info(&pci->dev, "SoundWire enabled on CannonLake+ platform, using SOF driver\n");
return SND_INTEL_DSP_DRIVER_SOF;
}
if (cfg->flags & FLAG_SOF_ONLY_IF_DMIC &&
snd_intel_dsp_check_dmic(pci)) {
dev_info(&pci->dev, "Digital mics found on Skylake+ platform, using SOF driver\n");
return SND_INTEL_DSP_DRIVER_SOF;
}
if (!(cfg->flags & FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE))
return SND_INTEL_DSP_DRIVER_SOF;
}
if (cfg->flags & FLAG_SST) {
if (cfg->flags & FLAG_SST_ONLY_IF_DMIC) {
if (snd_intel_dsp_check_dmic(pci)) {
dev_info(&pci->dev, "Digital mics found on Skylake+ platform, using SST driver\n");
return SND_INTEL_DSP_DRIVER_SST;
}
} else {
return SND_INTEL_DSP_DRIVER_SST;
}
}
return SND_INTEL_DSP_DRIVER_LEGACY;
}
EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
/* Should we default to SOF or SST for BYT/CHT ? */
#if IS_ENABLED(CONFIG_SND_INTEL_BYT_PREFER_SOF) || \
!IS_ENABLED(CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI)
#define FLAG_SST_OR_SOF_BYT FLAG_SOF
#else
#define FLAG_SST_OR_SOF_BYT FLAG_SST
#endif
/*
* configuration table
* - the order of similar ACPI ID entries is important!
* - the first successful match will win
*/
static const struct config_entry acpi_config_table[] = {
#if IS_ENABLED(CONFIG_SND_SST_ATOM_HIFI2_PLATFORM_ACPI) || \
IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
/* BayTrail */
{
.flags = FLAG_SST_OR_SOF_BYT,
.acpi_hid = "80860F28",
},
/* CherryTrail */
{
.flags = FLAG_SST_OR_SOF_BYT,
.acpi_hid = "808622A8",
},
#endif
/* Broadwell */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CATPT)
{
.flags = FLAG_SST,
.acpi_hid = "INT3438"
},
#endif
#if IS_ENABLED(CONFIG_SND_SOC_SOF_BROADWELL)
{
.flags = FLAG_SOF,
.acpi_hid = "INT3438"
},
#endif
/* Haswell - not supported by SOF but added for consistency */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CATPT)
{
.flags = FLAG_SST,
.acpi_hid = "INT33C8"
},
#endif
};
static const struct config_entry *snd_intel_acpi_dsp_find_config(const u8 acpi_hid[ACPI_ID_LEN],
const struct config_entry *table,
u32 len)
{
for (; len > 0; len--, table++) {
if (memcmp(table->acpi_hid, acpi_hid, ACPI_ID_LEN))
continue;
if (table->dmi_table && !dmi_check_system(table->dmi_table))
continue;
return table;
}
return NULL;
}
int snd_intel_acpi_dsp_driver_probe(struct device *dev, const u8 acpi_hid[ACPI_ID_LEN])
{
const struct config_entry *cfg;
if (dsp_driver > SND_INTEL_DSP_DRIVER_LEGACY && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
return dsp_driver;
if (dsp_driver == SND_INTEL_DSP_DRIVER_LEGACY) {
dev_warn(dev, "dsp_driver parameter %d not supported, using automatic detection\n",
SND_INTEL_DSP_DRIVER_LEGACY);
}
/* find the configuration for the specific device */
cfg = snd_intel_acpi_dsp_find_config(acpi_hid, acpi_config_table,
ARRAY_SIZE(acpi_config_table));
if (!cfg)
return SND_INTEL_DSP_DRIVER_ANY;
if (cfg->flags & FLAG_SST)
return SND_INTEL_DSP_DRIVER_SST;
if (cfg->flags & FLAG_SOF)
return SND_INTEL_DSP_DRIVER_SOF;
return SND_INTEL_DSP_DRIVER_SST;
}
EXPORT_SYMBOL_GPL(snd_intel_acpi_dsp_driver_probe);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel DSP config driver");
MODULE_IMPORT_NS(SND_INTEL_SOUNDWIRE_ACPI);
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