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Diffstat (limited to '')
| -rw-r--r-- | drivers/acpi/x86/utils.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c new file mode 100644 index 000000000..3f9a162be --- /dev/null +++ b/drivers/acpi/x86/utils.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * X86 ACPI Utility Functions + * + * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> + * + * Based on various non upstream patches to support the CHT Whiskey Cove PMIC: + * Copyright (C) 2013-2015 Intel Corporation. All rights reserved. + */ + +#include <linux/acpi.h> +#include <linux/dmi.h> +#include <asm/cpu_device_id.h> +#include <asm/intel-family.h> +#include "../internal.h" + +/* + * 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. + * + * Likewise sometimes some not-actually present devices are sometimes + * reported as present, which may cause issues. + * + * We work around this by using the below quirk list to override the status + * reported by the _STA method with a fixed value (ACPI_STA_DEFAULT or 0). + * Note this MUST only be done for devices where this is safe. + * + * This status overriding is limited to specific CPU (SoC) models both to + * avoid potentially causing trouble on other models and because some HIDs + * are re-used on different SoCs for completely different devices. + */ +struct override_status_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; + const char *path; + unsigned long long status; +}; + +#define ENTRY(status, hid, uid, path, cpu_model, dmi...) { \ + { { hid, }, {} }, \ + { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \ + { { .matches = dmi }, {} }, \ + uid, \ + path, \ + status, \ +} + +#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ + ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi) + +#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \ + ENTRY(0, hid, uid, NULL, cpu_model, dmi) + +#define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \ + ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi) + +#define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \ + ENTRY(0, "", NULL, path, cpu_model, dmi) + +static const struct override_status_id override_status_ids[] = { + /* + * Bay / Cherry Trail PWM directly poked by GPU driver in win10, + * but Linux uses a separate PWM driver, harmless if not used. + */ + PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}), + PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}), + + /* + * The INT0002 device is necessary to clear wakeup interrupt sources + * on Cherry Trail devices, without it we get nobody cared IRQ msgs. + */ + PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}), + /* + * On the Dell Venue 11 Pro 7130 and 7139, 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. + */ + PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"), + }), + PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"), + }), + + /* + * The GPD win BIOS dated 20170221 has disabled the accelerometer, the + * drivers sometimes cause crashes under Windows and this is how the + * manufacturer has solved this :| The DMI match may not seem unique, + * but it is. In the 67000+ DMI decode dumps from linux-hardware.org + * only 116 have board_vendor set to "AMI Corporation" and of those 116 + * only the GPD win and pocket entries' board_name is "Default string". + * + * Unfortunately the GPD pocket also uses these strings and its BIOS + * was copy-pasted from the GPD win, so it has a disabled KIOX000A + * node which we should not enable, thus we also check the BIOS date. + */ + PRESENT_ENTRY_HID("KIOX000A", "1", 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, "02/21/2017") + }), + PRESENT_ENTRY_HID("KIOX000A", "1", 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") + }), + PRESENT_ENTRY_HID("KIOX000A", "1", 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, "05/25/2017") + }), + + /* + * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO + * mmc controller enabled and that has a child-device which _PS3 + * method sets a GPIO causing the PCI wifi card to turn off. + * See above remark about uniqueness of the DMI match. + */ + NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"), + DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), + }), +}; + +bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status) +{ + bool ret = false; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) { + if (!x86_match_cpu(override_status_ids[i].cpu_ids)) + continue; + + if (override_status_ids[i].dmi_ids[0].matches[0].slot && + !dmi_check_system(override_status_ids[i].dmi_ids)) + continue; + + if (override_status_ids[i].path) { + struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL }; + bool match; + + if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path)) + continue; + + match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0; + kfree(path.pointer); + + if (!match) + continue; + } else { + if (acpi_match_device_ids(adev, override_status_ids[i].hid)) + continue; + + if (!adev->pnp.unique_id || + strcmp(adev->pnp.unique_id, override_status_ids[i].uid)) + continue; + } + + *status = override_status_ids[i].status; + ret = true; + break; + } + + return ret; +} |