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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 02:38:36 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 02:38:36 +0300 |
commit | b76f733c3ff83089cf1e3f9ae233533649f999b3 (patch) | |
tree | 602ab14c6a9dd78e781608058c92c377b0e1cfd0 /drivers | |
parent | 41f762a15a6324f67c3f084ece694c26f196cece (diff) | |
parent | 2818cc745445ae5866598fe45fe563ef843e30af (diff) | |
download | linux-b76f733c3ff83089cf1e3f9ae233533649f999b3.tar.xz |
Merge tag 'acpi-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These include an ACPICA code build fix related to recent GPE register
access changes, a Kconfig cleanup related to the Dynamic Platform and
Thremal Framework (DPTF) support, a reboot issue workaround, a debug
module fix and a couple of janitorial changes.
Specifics:
- Fix ACPICA code build after recent changes related to accessing GPE
registers (Rafael Wysocki).
- Clean up DPTF part of the ACPI Kconfig (Rafael Wysocki).
- Work around a reboot issue related to RESET_REG (Zhang Rui).
- Prevent ACPI debug module from attemtping to run (and crashing)
when ACPI is disabled (Jamie Iles).
- Drop confusing comment from the ACPI processor driver (Alex Hung).
- Drop a few unreachable break statements (Tom Rix)"
* tag 'acpi-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: utils: remove unreachable breaks
ACPICA: Add missing type casts in GPE register access code
ACPI: DPTF: Add ACPI_DPTF Kconfig menu
ACPI: DPTF: Fix participant driver names
ACPI: processor: remove comment regarding string _UID support
ACPI: reboot: Avoid racing after writing to ACPI RESET_REG
ACPI: debug: don't allow debugging when ACPI is disabled
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/acpi/acpi_dbg.c | 3 | ||||
-rw-r--r-- | drivers/acpi/acpi_processor.c | 1 | ||||
-rw-r--r-- | drivers/acpi/acpica/hwgpe.c | 4 | ||||
-rw-r--r-- | drivers/acpi/dptf/Kconfig | 29 | ||||
-rw-r--r-- | drivers/acpi/dptf/dptf_pch_fivr.c | 2 | ||||
-rw-r--r-- | drivers/acpi/dptf/dptf_power.c | 2 | ||||
-rw-r--r-- | drivers/acpi/reboot.c | 11 | ||||
-rw-r--r-- | drivers/acpi/utils.c | 4 |
8 files changed, 42 insertions, 14 deletions
diff --git a/drivers/acpi/acpi_dbg.c b/drivers/acpi/acpi_dbg.c index 6041974c7627..fb7290338593 100644 --- a/drivers/acpi/acpi_dbg.c +++ b/drivers/acpi/acpi_dbg.c @@ -749,6 +749,9 @@ static int __init acpi_aml_init(void) { int ret; + if (acpi_disabled) + return -ENODEV; + /* Initialize AML IO interface */ mutex_init(&acpi_aml_io.lock); init_waitqueue_head(&acpi_aml_io.wait); diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 412a9725cc1e..2ee5e05a0d69 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -264,7 +264,6 @@ static int acpi_processor_get_info(struct acpi_device *device) } else { /* * Declared with "Device" statement; match _UID. - * Note that we don't handle string _UIDs yet. */ status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID, NULL, &value); diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index 37bb67ef3232..b13a4ed5bc63 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -47,7 +47,7 @@ acpi_status acpi_hw_gpe_read(u64 *value, struct acpi_gpe_address *reg) if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { #ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES - *value = (u64)ACPI_GET8(reg->address); + *value = (u64)ACPI_GET8((unsigned long)reg->address); return_ACPI_STATUS(AE_OK); #else return acpi_os_read_memory((acpi_physical_address)reg->address, @@ -82,7 +82,7 @@ acpi_status acpi_hw_gpe_write(u64 value, struct acpi_gpe_address *reg) { if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { #ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES - ACPI_SET8(reg->address, value); + ACPI_SET8((unsigned long)reg->address, value); return_ACPI_STATUS(AE_OK); #else return acpi_os_write_memory((acpi_physical_address)reg->address, diff --git a/drivers/acpi/dptf/Kconfig b/drivers/acpi/dptf/Kconfig index 51f06f36cafa..1e8c7ce89bf1 100644 --- a/drivers/acpi/dptf/Kconfig +++ b/drivers/acpi/dptf/Kconfig @@ -1,8 +1,25 @@ # SPDX-License-Identifier: GPL-2.0 -config DPTF_POWER - tristate "DPTF Platform Power Participant" + +menuconfig ACPI_DPTF + bool "Intel DPTF (Dynamic Platform and Thermal Framework) Support" depends on X86 help + Intel Dynamic Platform and Thermal Framework (DPTF) is a platform + level hardware/software solution for power and thermal management. + + As a container for multiple power/thermal technologies, DPTF provides + a coordinated approach for different policies to effect the hardware + state of a system. + + For more information see: + <https://01.org/intel%C2%AE-dynamic-platform-and-thermal-framework-dptf-chromium-os/overview> + +if ACPI_DPTF + +config DPTF_POWER + tristate "Platform Power DPTF Participant" + default m + help This driver adds support for Dynamic Platform and Thermal Framework (DPTF) Platform Power Participant device (INT3407) support. This participant is responsible for exposing platform telemetry: @@ -16,15 +33,17 @@ config DPTF_POWER the module will be called dptf_power. config DPTF_PCH_FIVR - tristate "DPTF PCH FIVR Participant" - depends on X86 + tristate "PCH FIVR DPTF Participant" + default m help This driver adds support for Dynamic Platform and Thermal Framework (DPTF) PCH FIVR Participant device support. This driver allows to - switch PCH FIVR (Fully Integrated Voltage Regulator) frequency. + switch the PCH FIVR (Fully Integrated Voltage Regulator) frequency. This participant is responsible for exposing: freq_mhz_low_clock freq_mhz_high_clock To compile this driver as a module, choose M here: the module will be called dptf_pch_fivr. + +endif diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c index 4ab288827747..4c1992fce150 100644 --- a/drivers/acpi/dptf/dptf_pch_fivr.c +++ b/drivers/acpi/dptf/dptf_pch_fivr.c @@ -114,7 +114,7 @@ static struct platform_driver pch_fivr_driver = { .probe = pch_fivr_add, .remove = pch_fivr_remove, .driver = { - .name = "DPTF PCH FIVR", + .name = "dptf_pch_fivr", .acpi_match_table = pch_fivr_device_ids, }, }; diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c index 92b996a564d0..06741305fc77 100644 --- a/drivers/acpi/dptf/dptf_power.c +++ b/drivers/acpi/dptf/dptf_power.c @@ -237,7 +237,7 @@ static struct platform_driver dptf_power_driver = { .probe = dptf_power_add, .remove = dptf_power_remove, .driver = { - .name = "DPTF Platform Power", + .name = "dptf_power", .acpi_match_table = int3407_device_ids, }, }; diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index ca707f5b521d..2a61f884e222 100644 --- a/drivers/acpi/reboot.c +++ b/drivers/acpi/reboot.c @@ -3,6 +3,7 @@ #include <linux/pci.h> #include <linux/acpi.h> #include <acpi/reboot.h> +#include <linux/delay.h> #ifdef CONFIG_PCI static void acpi_pci_reboot(struct acpi_generic_address *rr, u8 reset_value) @@ -66,4 +67,14 @@ void acpi_reboot(void) acpi_reset(); break; } + + /* + * Some platforms do not shut down immediately after writing to the + * ACPI reset register, and this results in racing with the + * subsequent reboot mechanism. + * + * The 15ms delay has been found to be long enough for the system + * to reboot on the affected platforms. + */ + mdelay(15); } diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 838b719ec7ce..d5411a166685 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -104,7 +104,6 @@ acpi_extract_package(union acpi_object *package, " [%c]\n", i, format_string[i]); return AE_BAD_DATA; - break; } break; @@ -129,7 +128,6 @@ acpi_extract_package(union acpi_object *package, " expecting [%c]\n", i, format_string[i]); return AE_BAD_DATA; - break; } break; case ACPI_TYPE_LOCAL_REFERENCE: @@ -144,7 +142,6 @@ acpi_extract_package(union acpi_object *package, " expecting [%c]\n", i, format_string[i]); return AE_BAD_DATA; - break; } break; @@ -155,7 +152,6 @@ acpi_extract_package(union acpi_object *package, i)); /* TBD: handle nested packages... */ return AE_SUPPORT; - break; } } |