[SRU][OEM-5.6][PATCH 01/15] ALSA: hda: add autodetection for SoundWire
Hui Wang
hui.wang at canonical.com
Fri Oct 16 01:22:23 UTC 2020
From: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
BugLink: https://bugs.launchpad.net/bugs/1900069
When an ACPI companion device is present and the SoundWire link mask
information is available, use SoundWire instead of legacy HDA or
Skylake drivers.
The SOF driver is selected when SoundWire or DMIC are detected. There
is no precedence at this level. In the SOF driver proper, SoundWire
will be handled first since it is mutually exclusive with HDaudio.
Known devices with an existing DMI quirk bypass this detection to
avoid any dependency on ACPI/DSDT tables.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao at linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Link: https://lore.kernel.org/r/20200409190251.16569-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai at suse.de>
(backported from commit 0650857570d161486a95d37bc8682628881ae2da)
Signed-off-by: Hui Wang <hui.wang at canonical.com>
---
sound/hda/intel-dsp-config.c | 65 +++++++++++++++++++++++++++---------
1 file changed, 49 insertions(+), 16 deletions(-)
diff --git a/sound/hda/intel-dsp-config.c b/sound/hda/intel-dsp-config.c
index a4f8149cac74..efa758adb62b 100644
--- a/sound/hda/intel-dsp-config.c
+++ b/sound/hda/intel-dsp-config.c
@@ -1,10 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Jaroslav Kysela <perex at 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);
--
2.17.1
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