kernel.git/drivers/platform/x86/amd/pmf/acpi.c, branch linux-rolling-stable

platform/x86/amd/pmf: Add debug logs for pending requests and custom BIOS inputs

2025-09-11T08:03:47Z

This patch adds debug logging capabilities to monitor early pending requests and their associated custom BIOS inputs during runtime. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Tested-by: Yijun Shen Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20250901110140.2519072-10-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Call enact function sooner to process early pending requests

2025-09-11T08:03:46Z

Call the amd_pmf_invoke_cmd_enact() function to manage early pending requests and their associated custom BIOS inputs. Add a return statement for cases of failure. The PMF driver will adjust power settings according to custom BIOS inputs after assessing the policy conditions. Also, add a new common routine amd_pmf_handle_early_preq() to handle early BIOS pending requests for both v1 and v2 variants. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Tested-by: Yijun Shen Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20250901110140.2519072-9-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Add custom BIOS input support for AMD_CPU_ID_PS

2025-09-11T08:03:42Z

The PMF ACPI Specification (APMF) has been revised to version 1.3 to allow for additional custom BIOS inputs, enabling OEMs to have more precise thermal management of the system. This update includes adding support to the driver using the new data structure received from the BIOS through the existing APMF interfaces. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Tested-by: Yijun Shen Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20250901110140.2519072-7-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Add helper to verify BIOS input notifications are enable/disable

2025-09-11T08:03:41Z

Implement a helper function to check if BIOS input notifications are enabled or disabled. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Tested-by: Yijun Shen Signed-off-by: Shyam Sundar S K Link: https://patch.msgid.link/20250901110140.2519072-6-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: convert timeouts to secs_to_jiffies()

2025-03-21T16:07:38Z

Commit b35108a51cf7 ("jiffies: Define secs_to_jiffies()") introduced secs_to_jiffies(). As the value here is a multiple of 1000, use secs_to_jiffies() instead of msecs_to_jiffies() to avoid the multiplication This is converted using scripts/coccinelle/misc/secs_to_jiffies.cocci with the following Coccinelle rules: @depends on patch@ expression E; @@ -msecs_to_jiffies +secs_to_jiffies (E - * \( 1000 \| MSEC_PER_SEC \) ) Signed-off-by: Easwar Hariharan Signed-off-by: Andrew Morton Link: https://lore.kernel.org/r/20250225-converge-secs-to-jiffies-part-two-v3-14-a43967e36c88@linux.microsoft.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd: pmf: Switch to guard(mutex)

2024-12-19T14:15:36Z

Instead of using the `goto label; mutex_unlock()` pattern use `guard(mutex)` which will release the mutex when it goes out of scope. Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20241217194027.1189038-3-superm1@kernel.org Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Enable Custom BIOS Inputs for PMF-TA

2024-12-17T11:13:16Z

Introduce support for passing custom BIOS inputs to the PMF-TA to assess BIOS input policy conditions. The PMF driver will adjust system settings based on these BIOS input conditions and their corresponding output actions. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Signed-off-by: Shyam Sundar S K Reviewed-by: Mario Limonciello Link: https://lore.kernel.org/r/20241205101937.2547351-1-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Switch to platform_get_resource() and devm_ioremap_resource()

2024-11-04T13:13:45Z

Use platform_get_resource() to fetch the memory resource instead of acpi_walk_resources() and devm_ioremap_resource() for mapping the resources. PS: We cannot use resource_size() here because it adds an extra byte to round off the size. In the case of PMF ResourceTemplate(), this rounding is already handled within the _CRS. Using resource_size() would increase the resource size by 1, causing a mismatch with the length field and leading to issues. Therefore, simply use end-start of the ACPI resource to obtain the actual length. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Signed-off-by: Shyam Sundar S K Link: https://lore.kernel.org/r/20241104054829.620858-4-Shyam-sundar.S-k@amd.com [ij: added a cast to resource_size_t printing] Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86/amd/pmf: Add support for notifying Smart PC Solution updates

2024-08-19T10:17:06Z

The APMF function 14 (Notify Smart PC Solution Updates) allows the BIOS (AMD/OEM) to be informed about the outputs of custom Smart PC policies. Enhance the PMF driver to invoke APMF function 14 when these custom policy outputs are triggered. Co-developed-by: Patil Rajesh Reddy Signed-off-by: Patil Rajesh Reddy Signed-off-by: Shyam Sundar S K Link: https://lore.kernel.org/r/20240812131839.308768-1-Shyam-sundar.S-k@amd.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede

platform/x86/amd: pmf: Add infrastructure for quirking supported funcs

2024-04-16T12:17:31Z

In the event of a BIOS bug add infrastructure that will be utilized to override the return value for supported_funcs to avoid enabling features. Signed-off-by: Mario Limonciello Link: https://lore.kernel.org/r/20240410140956.385-2-mario.limonciello@amd.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen