diff options
Diffstat (limited to 'drivers/acpi/x86/utils.c')
| -rw-r--r-- | drivers/acpi/x86/utils.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index bd86b809c848..b4fbb9929482 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -12,6 +12,7 @@ */ #include <linux/acpi.h> +#include <linux/dmi.h> #include <asm/cpu_device_id.h> #include <asm/intel-family.h> #include "../internal.h" @@ -20,6 +21,10 @@ * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because * some recent Windows drivers bind to one device but poke at multiple * devices at the same time, so the others get hidden. + * + * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows + * driver bugs. We use DMI matching to match known cases of this. + * * We work around this by always reporting ACPI_STA_DEFAULT for these * devices. Note this MUST only be done for devices where this is safe. * @@ -31,14 +36,16 @@ struct always_present_id { struct acpi_device_id hid[2]; struct x86_cpu_id cpu_ids[2]; + struct dmi_system_id dmi_ids[2]; /* Optional */ const char *uid; }; #define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, } -#define ENTRY(hid, uid, cpu_models) { \ +#define ENTRY(hid, uid, cpu_models, dmi...) { \ { { hid, }, {} }, \ { cpu_models, {} }, \ + { { .matches = dmi }, {} }, \ uid, \ } @@ -47,13 +54,35 @@ static const struct always_present_id always_present_ids[] = { * Bay / Cherry Trail PWM directly poked by GPU driver in win10, * but Linux uses a separate PWM driver, harmless if not used. */ - ENTRY("80860F09", "1", ICPU(INTEL_FAM6_ATOM_SILVERMONT1)), - ENTRY("80862288", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT)), + ENTRY("80860F09", "1", ICPU(INTEL_FAM6_ATOM_SILVERMONT1), {}), + ENTRY("80862288", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}), /* * The INT0002 device is necessary to clear wakeup interrupt sources * on Cherry Trail devices, without it we get nobody cared IRQ msgs. */ - ENTRY("INT0002", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT)), + ENTRY("INT0002", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}), + /* + * On the Dell Venue 11 Pro 7130 the DSDT hides the touchscreen ACPI + * device until a certain time after _SB.PCI0.GFX0.LCD.LCD1._ON gets + * called has passed *and* _STA has been called at least 3 times since. + */ + ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"), + }), + /* + * The GPD win BIOS dated 20170320 has disabled the accelerometer, the + * drivers sometimes cause crashes under Windows and this is how the + * manufacturer has solved this :| Note that the the DMI data is less + * generic then it seems, a board_vendor of "AMI Corporation" is quite + * rare and a board_name of "Default String" also is rare. + */ + ENTRY("KIOX000A", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), { + DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), + DMI_MATCH(DMI_BOARD_NAME, "Default string"), + DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), + DMI_MATCH(DMI_BIOS_DATE, "03/20/2017") + }), }; bool acpi_device_always_present(struct acpi_device *adev) @@ -76,6 +105,10 @@ bool acpi_device_always_present(struct acpi_device *adev) if (!x86_match_cpu(always_present_ids[i].cpu_ids)) continue; + if (always_present_ids[i].dmi_ids[0].matches[0].slot && + !dmi_check_system(always_present_ids[i].dmi_ids)) + continue; + if (old_status != ACPI_STA_DEFAULT) /* Log only once */ dev_info(&adev->dev, "Device [%s] is in always present list\n", |