- Jun 24, 2024
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Armin Wolf authored
Add documentation for the WMI bus sysfs interface so userspace applications can use it to access additional data about WMI devices. Reviewed-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by:
Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20240624173116.31314-3-W_Armin@gmx.de Signed-off-by:
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Armin Wolf authored
Add support for forcing the WMI driver core to bind a certain WMI driver to a WMI device. This will be necessary to support generic WMI drivers without an ID table Reviewed-by:
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Ilpo Järvinen authored
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Dmitry Baryshkov authored
The Kconfig for platforms/arm64 has 'depends on ARM64 || COMPILE_TEST'. However due to Makefile having just obj-$(CONFIG_ARM64) the subdir will not be descended for !ARM64 platforms and thus the drivers won't get built. This breaks modular builds of other driver drivers which depend on arm64 platform drivers. Reported-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Fixes: 363c8aea ("platform: Add ARM64 platform directory") Signed-off-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20240624-ucsi-yoga-ec-driver-v9-1-53af411a9bd6@linaro.org Reviewed-by:
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- Jun 18, 2024
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Tero Kristo authored
Use the generic sysfs helpers for reading the current frequency also, and remove the custom ones. No functional change intended. Signed-off-by:
Tero Kristo <tero.kristo@linux.intel.com> Acked-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20240617060708.892981-8-tero.kristo@linux.intel.com Reviewed-by:
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Tero Kristo authored
The macros to create sysfs entries are going to be used for other attributes in addition to current min/max frequencies only, so rename these to be more generic. No functional change intended. Signed-off-by:
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Tero Kristo authored
Get rid of uncore_read_freq driver API. Instead, add a new entry to the enumerated read interface and use this. No functional change intended. Signed-off-by:
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Tero Kristo authored
Use the enumerated index for selecting the uncore driver parameter to read, instead of reading everything. This is done in preparation to expand the API to access more parameters later. No functional change intended. Signed-off-by:
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Tero Kristo authored
Get rid of the hardcoded / magic min_max argument from internal APIs. Instead, use an enumerated index value for it. No functional change intended. Signed-off-by:
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Tero Kristo authored
Get rid of any magic bitmasks from the code. Define proper macros for these, and use the bitfield operations to access them. No functional change intended. Signed-off-by:
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Tero Kristo authored
Rename the various bitmasks from the 'UNCORE_GENMASK_*' to 'UNCORE_*_MASK', and re-order them based on the register they reside in. No functional change intended. Signed-off-by:
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Ilpo Järvinen authored
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- Jun 14, 2024
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Dmitry Baryshkov authored
Lenovo Yoga C630 WOS is a laptop using Snapdragon 850 SoC. Like many laptops it uses an embedded controller (EC) to perform various platform operations, including, but not limited, to Type-C port control or power supply handlng. Add the driver for the EC, that creates devices for UCSI and power supply devices. Reviewed-by:
Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by:
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Bjorn Andersson authored
Add binding for the Embedded Controller found in the Qualcomm Snapdragon-based Lenovo Yoga C630. Signed-off-by:
Bjorn Andersson <andersson@kernel.org> Reviewed-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by:
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- Jun 12, 2024
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
Tony Luck <tony.luck@intel.com> Reviewed-by:
Jithu Joseph <jithu.joseph@intel.com> Reviewed-by:
Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Acked-by:
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- Jun 07, 2024
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Thomas Weißschuh authored
If platform_profile_register() fails it does kfree(thermal_handler) and leaves the pointer value around. Any call to thermal_cleanup() will try to kfree(thermal_handler) again. This will happen right away in dell_init(). In addition, platform_profile_remove() will be called although no profile is registered. NULL out the thermal_handler, so thermal_cleanup() avoids the double free. Fixes: 996ad412 ("platform/x86: dell-pc: Implement platform_profile") Signed-off-by:
Thomas Weißschuh <linux@weissschuh.net> Reviewed-by:
Lyndon Sanche <lsanche@lyndeno.ca> Link: https://lore.kernel.org/r/20240604-dell-pc-double-free-v1-1-6d81255b2a44@weissschuh.net Reviewed-by:
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- Jun 03, 2024
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20240602090244.1666360-7-andy.shevchenko@gmail.com Reviewed-by:
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
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Andy Shevchenko authored
Use 2-argument strscpy(), which is not only shorter but also provides an additional check that destination buffer is an array. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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Tony Luck authored
New CPU #defines encode vendor and family as well as model. Signed-off-by:
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- May 31, 2024
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Tero Kristo authored
Describe the new 'plr' (Performance Limit Reasons) directory contents under the main TPMI debugfs folder. Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by:
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Tero Kristo authored
Add support for reading fine grained power limit reasons via the PLR mailbox. Reviewed-by:
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Tero Kristo authored
Add new auxiliary driver that exposes the SoC performance limit reasons via debugfs interface. Reviewed-by:
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Srinivas Pandruvada authored
Each TPMI power domain includes a group of CPUs. Several power management settings in this case applicable to a group of CPUs. There can be several power domains in a CPU package. So, provide interfaces for: - Get power domain id for a Linux CPU - Get mask of Linux CPUs in a power domain Hardware Punit uses different CPU numbering, which is not based on APIC (Advanced Programmable Interrupt Controller) CPU numbering. The Linux CPU numbering is based on APIC CPU numbering. Some PM features like Intel Speed Select, the CPU core mask provided by the hardware is based on the Punit CPU numbering. To use the core mask, this mask needs to be converted to a Linux CPUs mask. So, provide interfaces for: - Convert to a Linux CPU number from a Punit CPU number - Convert to a Punit CPU number from a Linux CPU number On each CPU online, MSR 0x54 is used to read the mapping and stores in a per cpu array. Create a hash for faster searching of a Linux CPU number from a Punit CPU number. Signed-off-by:
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Tero Kristo authored
Add new API to get the debugfs root directory for TPMI. This allows any TPMI devices to add their own debugfs items under the same directory structure. Reviewed-by:
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Tero Kristo authored
Add TPMI ID 0x0C (Perf Limit Reasons) to the list of supported TPMI IDs. Reviewed-by:
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Srinivas Pandruvada authored
When the TPMI interface is present, use this interface instead of legacy. On some systems legacy IO device is also present. Using both interfaces together is confusing and may set the hardware in inconsistent state. When TPMI interface is present, don't load legacy drivers. Signed-off-by:
Zhang Rui <rui.zhang@intel.com> Reviewed-by:
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Srinivas Pandruvada authored
Some SkyLake server variants don't support any SST functionality. No use of providing any SST related interfaces on them. All supported SkyLake servers provide mailbox interface via MSR. So check for the presence of MSR 0xB0 and 0xB1. If not present don't load common module. Move defines for MSR_OS_MAILBOX_INTERFACE and MSR_OS_MAILBOX_DATA to common header file to avoid duplicating them. Signed-off-by:
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Srinivas Pandruvada authored
SST common module is loaded when model specific or TPMI SST driver registers for services. There are model specific features used in SST common modules which are checked with a CPU model list. So, this module is model specific. There are some use cases where loading the common module independently only on the supported CPU models helps. The first use case is for preventing SST TPMI module loading if the model specific features are not implemented. The second use case for presenting information to user space when SST is used in OOB (Out of Band) mode. 1. With TPMI, SST interface is architectural. This means that no need to add new PCI device IDs for new CPU models. This means that there can be lag in adding CPU models for the model specific features in the common module. For example, before adding CPU model to GRANITERAPIDS_D to hpm_cpu_ids[], SST is still functional for some features and but will get/set wrong data for features like SST-CP. This is because IOCTL ISST_IF_GET_PHY_ID, will not give correct mapping for newer CPU models. So adding explicit model check during load time will prevent such cases. For unsupported CPU models, common driver will fail to load and hence dependent modules will not be loaded. 2. When the SST TPMI features are controlled by some OOB agent (not from OS interface), even if the CPU model is supported, there will be no user space interface available for tools as SST TPMI modules will not be loaded. User space interface is registered when TPMI modules call isst_if_cdev_register(). Even in this case user space orchestrator software needs to get power domain information to schedule workload and get/set turbo ratio limits. This information is exposed by the common module using IOCTLs ISST_IF_GET_PHY_ID and ISST_IF_MSR_COMMAND respectively. Since the user space MSR access can be locked, direct MSR access from the user space is not an option using /dev/cpu/*/msr. Converge all the existing model checks to one common place and use driver data to differentiate. On successful model check call isst_misc_reg(). Signed-off-by:
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