diff options
Diffstat (limited to 'sound/soc/intel/skylake/skl.c')
| -rw-r--r-- | sound/soc/intel/skylake/skl.c | 48 |
1 files changed, 33 insertions, 15 deletions
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index 29d9b0eb83ea..60c94836bf5b 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -40,6 +40,9 @@ #if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKYLAKE_HDAUDIO_CODEC) #include "../../../soc/codecs/hdac_hda.h" #endif +static int skl_pci_binding; +module_param_named(pci_binding, skl_pci_binding, int, 0444); +MODULE_PARM_DESC(pci_binding, "PCI binding (0=auto, 1=only legacy, 2=only asoc"); /* * initialize the PCI registers @@ -896,21 +899,6 @@ static int skl_first_init(struct hdac_bus *bus) unsigned short gcap; int cp_streams, pb_streams, start_idx; - /* - * detect DSP by checking class/subclass/prog-id information - * class=04 subclass 03 prog-if 00: no DSP, legacy driver needs to be used - * 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: either of DSP or legacy mode can be used - */ - if (pci->class == 0x040300) { - dev_err(bus->dev, "The DSP is not enabled on this platform, aborting probe\n"); - return -ENODEV; - } else if (pci->class != 0x040100 && pci->class != 0x040380) { - dev_err(bus->dev, "Unknown PCI class/subclass/prog-if information (0x%06x) found, aborting probe\n", pci->class); - return -ENODEV; - } - dev_info(bus->dev, "DSP detected with PCI class/subclass/prog-if info 0x%06x\n", pci->class); - err = pci_request_regions(pci, "Skylake HD audio"); if (err < 0) return err; @@ -984,6 +972,36 @@ static int skl_probe(struct pci_dev *pci, struct hdac_bus *bus = NULL; int err; + 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"); + 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"); + return -ENODEV; + case SND_SKL_PCI_BIND_ASOC: + dev_info(&pci->dev, "Module parameter forced binding with SKL driver, bypassed detection logic\n"); + break; + default: + dev_err(&pci->dev, "invalid value for skl_pci_binding module parameter, ignored\n"); + break; + } + /* we use ext core ops, so provide NULL for ops here */ err = skl_create(pci, NULL, &skl); if (err < 0) |