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// 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");
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