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ALSA: hda: add Intel DSP configuration / probe code 

For distributions, we need one place where we can decide
which driver will be activated for the auto-configation of the
Intel's HDA hardware with DSP. Actually, we cover three drivers:

* Legacy HDA
* Intel SST
* Intel Sound Open Firmware (SOF)

All those drivers registers similar PCI IDs, so the first
driver probed from the PCI stack can win. But... it is not
guaranteed that the correct driver wins.

This commit changes Intel's NHLT ACPI module to a common
DSP probe module for the Intel's hardware. All above sound
drivers calls this code. The user can force another behaviour
using the module parameter 'dsp_driver' located in
the 'snd-intel-dspcfg' module.

This change allows to add specific dmi checks for the specific
systems. The examples are taken from the pull request:

  https://github.com/thesofproject/linux/pull/927

Tested on Lenovo Carbon X1 7th gen.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191022174313.29087-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jaroslav Kysela 2019-10-22 19:43:12 +02:00 committed by Takashi Iwai
parent 46b4bff657
commit 82d9d54a6c
11 changed files with 322 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
include/sound/intel-dsp-config.h Normal file
View File

@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* intel-dsp-config.h - Intel DSP config
*
* Copyright (c) 2019 Jaroslav Kysela <perex@perex.cz>
*/
#ifndef __INTEL_DSP_CONFIG_H__
#define __INTEL_DSP_CONFIG_H__
struct pci_dev;
enum {
SND_INTEL_DSP_DRIVER_ANY = 0,
SND_INTEL_DSP_DRIVER_LEGACY,
SND_INTEL_DSP_DRIVER_SST,
SND_INTEL_DSP_DRIVER_SOF,
SND_INTEL_DSP_DRIVER_LAST = SND_INTEL_DSP_DRIVER_SOF
};
#if IS_ENABLED(CONFIG_SND_INTEL_DSP_CONFIG)
int snd_intel_dsp_driver_probe(struct pci_dev *pci);
#else
static inline int snd_intel_dsp_driver_probe(struct pci_dev *pci)
{
return SND_INTEL_DSP_DRIVER_ANY;
}
#endif
#endif

10
sound/hda/Kconfig
View File

@ -34,6 +34,12 @@ config SND_HDA_PREALLOC_SIZE
via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.
config SND_INTEL_NHLT
tristate
bool
# this config should be selected only for Intel ACPI platforms.
# A fallback is provided so that the code compiles in all cases.
# A fallback is provided so that the code compiles in all cases.
config SND_INTEL_DSP_CONFIG
tristate
select SND_INTEL_NHLT if ACPI
# this config should be selected only for Intel DSP platforms.
# A fallback is provided so that the code compiles in all cases.

5
sound/hda/Makefile
View File

@ -14,5 +14,6 @@ obj-$(CONFIG_SND_HDA_CORE) += snd-hda-core.o
#extended hda
obj-$(CONFIG_SND_HDA_EXT_CORE) += ext/
snd-intel-nhlt-objs := intel-nhlt.o
obj-$(CONFIG_SND_INTEL_NHLT) += snd-intel-nhlt.o
snd-intel-dspcfg-objs := intel-dsp-config.o
snd-intel-dspcfg-$(CONFIG_SND_INTEL_NHLT) += intel-nhlt.o
obj-$(CONFIG_SND_INTEL_DSP_CONFIG) += snd-intel-dspcfg.o

249
sound/hda/intel-dsp-config.c Normal file
View File

@ -0,0 +1,249 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Jaroslav Kysela <perex@perex.cz>
#include <linux/bits.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/pci.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_SOF_ONLY_IF_DMIC BIT(16)
struct config_entry {
u32 flags;
u16 device;
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[] = {
/* Cometlake-LP */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_LP)
{
/* prefer SST */
.flags = FLAG_SST,
.device = 0x02c8,
},
#elif IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE_LP)
{
.flags = FLAG_SOF,
.device = 0x02c8,
},
#endif
/* Cometlake-H */
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_CML_H)
{
.flags = FLAG_SST,
.device = 0x06c8,
},
#elif IS_ENABLED(CONFIG_SND_SOC_SOF_COMETLAKE_H)
{
.flags = FLAG_SOF,
.device = 0x06c8,
},
#endif
/* 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 | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x1a98,
},
#endif
/* 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
#if IS_ENABLED(CONFIG_SND_SOC_INTEL_GLK)
{
.flags = FLAG_SST,
.device = 0x3198,
},
#endif
/* Icelake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_ICELAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x34c8,
},
#endif
/* Elkhart Lake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_ELKHARTLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x4b55,
},
#endif
/* Appololake (Broxton-P) */
#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,
},
#endif
/* Cannonlake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_CANNONLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x9dc8,
},
#endif
/* Sunrise Point-LP */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_SKYLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x9d70,
},
#endif
/* Kabylake-LP */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_KABYLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0x9d71,
},
#endif
/* Tigerlake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_TIGERLAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0xa0c8,
},
#endif
/* Coffelake */
#if IS_ENABLED(CONFIG_SND_SOC_SOF_COFFEELAKE)
{
.flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
.device = 0xa348,
},
#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;
}
int snd_intel_dsp_driver_probe(struct pci_dev *pci)
{
const struct config_entry *cfg;
if (dsp_driver > 0 && dsp_driver <= SND_INTEL_DSP_DRIVER_LAST)
return dsp_driver;
/* Intel vendor only */
if (snd_BUG_ON(pci->vendor != 0x8086))
return SND_INTEL_DSP_DRIVER_ANY;
/*
* 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 HDA 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_DMIC) {
if (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;
}
} else {
return SND_INTEL_DSP_DRIVER_SOF;
}
}
if (cfg->flags & FLAG_SST)
return SND_INTEL_DSP_DRIVER_SST;
return SND_INTEL_DSP_DRIVER_LEGACY;
}
EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel DSP config driver");

3
sound/hda/intel-nhlt.c
View File

@ -102,6 +102,3 @@ int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt)
return dmic_geo;
}
EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel NHLT driver");

11
sound/pci/hda/Kconfig
View File

@ -12,7 +12,7 @@ config SND_HDA_INTEL
tristate "HD Audio PCI"
depends on SND_PCI
select SND_HDA
select SND_INTEL_NHLT if ACPI
select SND_INTEL_DSP_CONFIG
help
Say Y here to include support for Intel "High Definition
Audio" (Azalia) and its compatible devices.
@ -23,15 +23,6 @@ config SND_HDA_INTEL
To compile this driver as a module, choose M here: the module
will be called snd-hda-intel.
config SND_HDA_INTEL_DETECT_DMIC
bool "DMIC detection and probe abort"
depends on SND_HDA_INTEL
help
Say Y to detect digital microphones on SKL+ devices. DMICs
cannot be handled by the HDaudio legacy driver and are
currently only supported by the SOF driver.
If unsure say N.
config SND_HDA_TEGRA
tristate "NVIDIA Tegra HD Audio"
depends on ARCH_TEGRA

49
sound/pci/hda/hda_intel.c
View File

@ -46,7 +46,7 @@
#include <sound/initval.h>
#include <sound/hdaudio.h>
#include <sound/hda_i915.h>
#include <sound/intel-nhlt.h>
#include <sound/intel-dsp-config.h>
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>
#include <linux/firmware.h>
@ -124,7 +124,7 @@ static char *patch[SNDRV_CARDS];
static bool beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
CONFIG_SND_HDA_INPUT_BEEP_MODE};
#endif
static bool dmic_detect = IS_ENABLED(CONFIG_SND_HDA_INTEL_DETECT_DMIC);
static bool dsp_driver = 1;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
@ -159,8 +159,9 @@ module_param_array(beep_mode, bool, NULL, 0444);
MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
"(0=off, 1=on) (default=1).");
#endif
module_param(dmic_detect, bool, 0444);
MODULE_PARM_DESC(dmic_detect, "DMIC detect on SKL+ platforms");
module_param(dsp_driver, bool, 0444);
MODULE_PARM_DESC(dsp_driver, "Allow DSP driver selection (bypass this driver) "
"(0=off, 1=on) (default=1)");
#ifdef CONFIG_PM
static int param_set_xint(const char *val, const struct kernel_param *kp);
@ -2026,25 +2027,6 @@ static const struct hda_controller_ops pci_hda_ops = {
.position_check = azx_position_check,
};
static int azx_check_dmic(struct pci_dev *pci, struct azx *chip)
{
struct nhlt_acpi_table *nhlt;
int ret = 0;
if (chip->driver_type == AZX_DRIVER_SKL &&
pci->class != 0x040300) {
nhlt = intel_nhlt_init(&pci->dev);
if (nhlt) {
if (intel_nhlt_get_dmic_geo(&pci->dev, nhlt)) {
ret = -ENODEV;
dev_info(&pci->dev, "Digital mics found on Skylake+ platform, aborting probe\n");
}
intel_nhlt_free(nhlt);
}
}
return ret;
}
static int azx_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@ -2062,6 +2044,16 @@ static int azx_probe(struct pci_dev *pci,
return -ENOENT;
}
/*
* stop probe if another Intel's DSP driver should be activated
*/
if (dsp_driver) {
err = snd_intel_dsp_driver_probe(pci);
if (err != SND_INTEL_DSP_DRIVER_ANY &&
err != SND_INTEL_DSP_DRIVER_LEGACY)
return -ENODEV;
}
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0, &card);
if (err < 0) {
@ -2075,17 +2067,6 @@ static int azx_probe(struct pci_dev *pci,
card->private_data = chip;
hda = container_of(chip, struct hda_intel, chip);
/*
* stop probe if digital microphones detected on Skylake+ platform
* with the DSP enabled. This is an opt-in behavior defined at build
* time or at run-time with a module parameter
*/
if (dmic_detect) {
err = azx_check_dmic(pci, chip);
if (err < 0)
goto out_free;
}
pci_set_drvdata(pci, card);
err = register_vga_switcheroo(chip);

2
sound/soc/intel/Kconfig
View File

@ -215,7 +215,7 @@ config SND_SOC_INTEL_SKYLAKE_COMMON
select SND_SOC_INTEL_SST
select SND_SOC_HDAC_HDA if SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC
select SND_SOC_ACPI_INTEL_MATCH
select SND_INTEL_NHLT if ACPI
select SND_INTEL_DSP_CONFIG
help
If you have a Intel Skylake/Broxton/ApolloLake/KabyLake/
GeminiLake or CannonLake platform with the DSP enabled in the BIOS

19
sound/soc/intel/skylake/skl.c
View File

@ -27,6 +27,7 @@
#include <sound/hda_i915.h>
#include <sound/hda_codec.h>
#include <sound/intel-nhlt.h>
#include <sound/intel-dsp-config.h>
#include "skl.h"
#include "skl-sst-dsp.h"
#include "skl-sst-ipc.h"
@ -987,22 +988,10 @@ static int skl_probe(struct pci_dev *pci,
switch (skl_pci_binding) {
case SND_SKL_PCI_BIND_AUTO:
/*
* 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) {
dev_info(&pci->dev, "The DSP is not enabled on this platform, aborting probe\n");
err = snd_intel_dsp_driver_probe(pci);
if (err != SND_INTEL_DSP_DRIVER_ANY &&
err != SND_INTEL_DSP_DRIVER_SST)
return -ENODEV;
}
if (pci->class != 0x040100 && pci->class != 0x040380) {
dev_err(&pci->dev, "Unknown PCI class/subclass/prog-if information (0x%06x) found, aborting probe\n", pci->class);
return -ENODEV;
}
dev_info(&pci->dev, "DSP detected with PCI class/subclass/prog-if info 0x%06x\n", pci->class);
break;
case SND_SKL_PCI_BIND_LEGACY:
dev_info(&pci->dev, "Module parameter forced binding with HDaudio legacy, aborting probe\n");

2
sound/soc/sof/intel/Kconfig
View File

@ -286,7 +286,7 @@ config SND_SOC_SOF_HDA
tristate
select SND_HDA_EXT_CORE if SND_SOC_SOF_HDA_LINK
select SND_SOC_HDAC_HDA if SND_SOC_SOF_HDA_AUDIO_CODEC
select SND_INTEL_NHLT if ACPI
select SND_INTEL_DSP_CONFIG
help
This option is not user-selectable but automagically handled by
'select' statements at a higher level

6
sound/soc/sof/sof-pci-dev.c
View File

@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <sound/intel-dsp-config.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/sof.h>
@ -277,6 +278,11 @@ static int sof_pci_probe(struct pci_dev *pci,
const struct snd_sof_dsp_ops *ops;
int ret;
ret = snd_intel_dsp_driver_probe(pci);
if (ret != SND_INTEL_DSP_DRIVER_ANY &&
ret != SND_INTEL_DSP_DRIVER_SOF)
return -ENODEV;
dev_dbg(&pci->dev, "PCI DSP detected");
/* get ops for platform */