Unverified Commit 8164a14b authored by Alexey Zagorodnikov's avatar Alexey Zagorodnikov Committed by Ilpo Järvinen
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platform/x86/amd/pmf: Added a module parameter to disable the Smart PC function 

Addresses a low power limits issue on HP ZBook Ultra G1a.

If vendor firmware capped APU power limits with 3rd-party AC adapters,
the user can disable the Smart PC function via the module parameter

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/4868

 [1]
Signed-off-by: default avatarAlexey Zagorodnikov <xglooom@gmail.com>
Reviewed-by: default avatarMario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260121143519.12318-1-xglooom@gmail.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 7c9aa38a

drivers/platform/x86/amd/pmf/core.c

+13 −5
Original line number Diff line number Diff line
@@ -57,6 +57,10 @@ static bool force_load; 
module_param(force_load, bool, 0444);

MODULE_PARM_DESC(force_load, "Force load this driver on supported older platforms (experimental)");



static bool smart_pc_support = true;

module_param(smart_pc_support, bool, 0444);

MODULE_PARM_DESC(smart_pc_support, "Smart PC Support (default = true)");



static struct device *pmf_device;



static int amd_pmf_pwr_src_notify_call(struct notifier_block *nb, unsigned long event, void *data)
@@ -493,12 +497,16 @@ static void amd_pmf_init_features(struct amd_pmf_dev *dev) 
		dev_dbg(dev->dev, "SPS enabled and Platform Profiles registered\n");

	}



	if (smart_pc_support) {

		amd_pmf_init_smart_pc(dev);

		if (dev->smart_pc_enabled) {

			dev_dbg(dev->dev, "Smart PC Solution Enabled\n");

			/* If Smart PC is enabled, no need to check for other features */

			return;

		}

	} else {

		dev->smart_pc_enabled = false;

	}



	if (is_apmf_func_supported(dev, APMF_FUNC_AUTO_MODE)) {

		amd_pmf_init_auto_mode(dev);