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authorHans de Goede <hdegoede@redhat.com>2021-11-22 18:05:31 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-12-01 20:14:25 +0100
commit1a68b346a2c9969c05e80a3b99a9ab160b5655c0 (patch)
tree0bafc7a05471931b7937bb002fd0e98e0641748b /drivers/acpi/x86
parentd431dfb764b145369be820fcdfd50f2159b9bbc2 (diff)
ACPI: Change acpi_device_always_present() into acpi_device_override_status()
Currently, acpi_bus_get_status() calls acpi_device_always_present() to allow platform quirks to override the _STA return to report that a device is present (status = ACPI_STA_DEFAULT) independent of the _STA return. In some cases it might also be useful to have the opposite functionality and have a platform quirk which marks a device as not present (status = 0) to work around ACPI table bugs. Change acpi_device_always_present() into a more generic acpi_device_override_status() function to allow this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/x86')
-rw-r--r--drivers/acpi/x86/utils.c64
1 files changed, 37 insertions, 27 deletions
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 3bcac98f6eca..edb4f3fd93dc 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -22,54 +22,63 @@
* 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.
+ * Likewise sometimes some not-actually present devices are sometimes
+ * reported as present, which may cause issues.
*
- * This forcing of devices to be present 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.
+ * 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 always_present_id {
+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;
+ unsigned long long status;
};
-#define X86_MATCH(model) X86_MATCH_INTEL_FAM6_MODEL(model, NULL)
-
-#define ENTRY(hid, uid, cpu_models, dmi...) { \
+#define ENTRY(status, hid, uid, cpu_model, dmi...) { \
{ { hid, }, {} }, \
- { cpu_models, {} }, \
+ { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \
{ { .matches = dmi }, {} }, \
uid, \
+ status, \
}
-static const struct always_present_id always_present_ids[] = {
+#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
+ ENTRY(ACPI_STA_DEFAULT, hid, uid, cpu_model, dmi)
+
+#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
+ ENTRY(0, hid, uid, 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.
*/
- ENTRY("80860F09", "1", X86_MATCH(ATOM_SILVERMONT), {}),
- ENTRY("80862288", "1", X86_MATCH(ATOM_AIRMONT), {}),
+ 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.
*/
- ENTRY("INT0002", "1", X86_MATCH(ATOM_AIRMONT), {}),
+ 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.
*/
- ENTRY("SYNA7500", "1", X86_MATCH(HASWELL_L), {
+ PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
}),
- ENTRY("SYNA7500", "1", X86_MATCH(HASWELL_L), {
+ PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
}),
@@ -85,19 +94,19 @@ static const struct always_present_id always_present_ids[] = {
* 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.
*/
- ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+ 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")
}),
- ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+ 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")
}),
- ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+ 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"),
@@ -105,26 +114,27 @@ static const struct always_present_id always_present_ids[] = {
}),
};
-bool acpi_device_always_present(struct acpi_device *adev)
+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(always_present_ids); i++) {
- if (acpi_match_device_ids(adev, always_present_ids[i].hid))
+ for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
+ if (acpi_match_device_ids(adev, override_status_ids[i].hid))
continue;
if (!adev->pnp.unique_id ||
- strcmp(adev->pnp.unique_id, always_present_ids[i].uid))
+ strcmp(adev->pnp.unique_id, override_status_ids[i].uid))
continue;
- if (!x86_match_cpu(always_present_ids[i].cpu_ids))
+ if (!x86_match_cpu(override_status_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))
+ if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
+ !dmi_check_system(override_status_ids[i].dmi_ids))
continue;
+ *status = override_status_ids[i].status;
ret = true;
break;
}