On Haswell/Broadwell/Baytrail/Braswell, the DSP is not used for the
HDMI/DP interface, and setting the dsp_driver parameter to a value > 1
has the side effect of preventing the HDaudio legacy driver from
probing.
The DSP driver selection should really only handle cases where a DSP
is actually used. This patch traps all known PCI devices and makes
sure the HDaudio driver can always be probed.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Rander Wang <rander.wang@xxxxxxxxxxxxxxx>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@xxxxxxxxxxxxxxx>
---
sound/hda/intel-dsp-config.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/sound/hda/intel-dsp-config.c b/sound/hda/intel-dsp-config.c
index 0dc079ba02ff..6a0d070c60c9 100644
--- a/sound/hda/intel-dsp-config.c
+++ b/sound/hda/intel-dsp-config.c
@@ -379,6 +379,20 @@ int snd_intel_dsp_driver_probe(struct pci_dev *pci)
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;
--
2.25.1
