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platform/x86/amd/pmc: Notify user when platform does not support s0ix transition

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Some of the AMD platforms do not support modern standby, so when such
CPU ID is detected, a warning message will be displayed to the user.

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Co-developed-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20250305142615.410178-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Shyam Sundar S K
2025-03-05 19:56:12 +05:30
committed by Ilpo Järvinen
parent 99923a0df7
commit 351f3d9a05
2 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/platform/x86/amd/pmc/pmc.c
+2 -1
View File
@@ -808,6 +808,7 @@ static const struct pci_device_id pmc_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_PCO) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_RV) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_SP) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, AMD_CPU_ID_SHP) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_ROOT) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M60H_ROOT) },
{ }
@@ -832,7 +833,7 @@ static int amd_pmc_probe(struct platform_device *pdev)
dev->cpu_id = rdev->device;
if (dev->cpu_id == AMD_CPU_ID_SP) {
if (dev->cpu_id == AMD_CPU_ID_SP || dev->cpu_id == AMD_CPU_ID_SHP) {
dev_warn_once(dev->dev, "S0i3 is not supported on this hardware\n");
err = -ENODEV;
goto err_pci_dev_put;
drivers/platform/x86/amd/pmc/pmc.h
+1
View File
@@ -79,6 +79,7 @@ void amd_mp2_stb_deinit(struct amd_pmc_dev *dev);
#define AMD_CPU_ID_CB 0x14D8
#define AMD_CPU_ID_PS 0x14E8
#define AMD_CPU_ID_SP 0x14A4
#define AMD_CPU_ID_SHP 0x153A
#define PCI_DEVICE_ID_AMD_1AH_M20H_ROOT 0x1507
#define PCI_DEVICE_ID_AMD_1AH_M60H_ROOT 0x1122
#define PCI_DEVICE_ID_AMD_MP2_STB 0x172c