@@ -1,10 +1,13 @@
// 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>
@@ -14,9 +17,13 @@ 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)
+#define FLAG_SST BIT(0)
+#define FLAG_SOF BIT(1)
+#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;
@@ -166,7 +173,7 @@ static const struct config_entry config_table[] = {
}
},
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x9dc8,
},
#endif
@@ -187,7 +194,7 @@ static const struct config_entry config_table[] = {
}
},
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0xa348,
},
#endif
@@ -221,7 +228,7 @@ static const struct config_entry config_table[] = {
}
},
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x02c8,
},
#endif
@@ -247,7 +254,7 @@ static const struct config_entry config_table[] = {
}
},
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x06c8,
},
#endif
@@ -268,7 +275,7 @@ static const struct config_entry config_table[] = {
}
},
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0x34c8,
},
#endif
@@ -288,9 +295,8 @@ static const struct config_entry config_table[] = {
{}
}
},
-
{
- .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC,
+ .flags = FLAG_SOF | FLAG_SOF_ONLY_IF_DMIC_OR_SOUNDWIRE,
.device = 0xa0c8,
},
#endif
@@ -335,6 +341,28 @@ static int snd_intel_dsp_check_dmic(struct pci_dev *pci)
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 = { 0 };
+ 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;
@@ -368,14 +396,18 @@ int snd_intel_dsp_driver_probe(struct pci_dev *pci)
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 {
+ 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)
@@ -387,3 +419,4 @@ EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel DSP config driver");
+MODULE_IMPORT_NS(SOUNDWIRE_INTEL_INIT);