| de5cec22 | 04-Aug-2025 |
Suma Hegde <suma.hegde@amd.com> |
platform/x86/amd/hsmp: Ensure success even if hwmon registration fails
Even if hwmon registration fails, HSMP remains accessible through the
device file, so the operation should return success.
Sig
platform/x86/amd/hsmp: Ensure success even if hwmon registration fails
Even if hwmon registration fails, HSMP remains accessible through the
device file, so the operation should return success.
Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250804101551.89866-1-suma.hegde@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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| 784e48a8 | 05-Jun-2025 |
Jake Hillion <jake@hillion.co.uk> |
x86/platform/amd: replace down_timeout() with down_interruptible()
Currently hsmp_send_message() uses down_timeout() with a 100ms timeout
to take the semaphore. However __hsmp_send_message(), the co
x86/platform/amd: replace down_timeout() with down_interruptible()
Currently hsmp_send_message() uses down_timeout() with a 100ms timeout
to take the semaphore. However __hsmp_send_message(), the content of the
critical section, has a sleep in it. On systems with significantly
delayed scheduling behaviour this may take over 100ms.
Convert this method to down_interruptible(). Leave the error handling
the same as the documentation currently is not specific about what error
is returned.
Previous behaviour: a caller who competes with another caller stuck in
the critical section due to scheduler delays would receive -ETIME.
New behaviour: a caller who competes with another caller stuck in the
critical section due to scheduler delays will complete successfully.
Reviewed-by: Suma Hegde <suma.hegde@amd.com>
Tested-by: Suma Hegde <suma.hegde@amd.com>
Signed-off-by: Jake Hillion <jake@hillion.co.uk>
Link: https://lore.kernel.org/r/20250605-amd-hsmp-v2-2-a811bc3dd74a@hillion.co.uk
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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| 511a4a5e | 06-May-2025 |
Suma Hegde <suma.hegde@amd.com> |
platform/x86/amd/hsmp: acpi: Add sysfs files to display HSMP telemetry
Make frequently fetched telemetry available via sysfs. These parameters
do not fit in hwmon sensor model, hence make them avail
platform/x86/amd/hsmp: acpi: Add sysfs files to display HSMP telemetry
Make frequently fetched telemetry available via sysfs. These parameters
do not fit in hwmon sensor model, hence make them available via sysfs.
Create following sysfs files per acpi device node.
* c0_residency_input
* prochot_status
* smu_fw_version
* protocol_version
* ddr_max_bw(GB/s)
* ddr_utilised_bw_input(GB/s)
* ddr_utilised_bw_perc_input(%)
* mclk_input(MHz)
* fclk_input(MHz)
* clk_fmax(MHz)
* clk_fmin(MHz)
* cclk_freq_limit_input(MHz)
* pwr_current_active_freq_limit(MHz)
* pwr_current_active_freq_limit_source
Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20250506101542.200811-3-suma.hegde@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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| 92c025db | 06-May-2025 |
Suma Hegde <suma.hegde@amd.com> |
platform/x86/amd/hsmp: Report power via hwmon sensors
Expose power reading and power limits via hwmon power sensors.
Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Naveen Krishna Chatr
platform/x86/amd/hsmp: Report power via hwmon sensors
Expose power reading and power limits via hwmon power sensors.
Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Link: https://lore.kernel.org/r/20250506101542.200811-2-suma.hegde@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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