dev->ptm_root ? " (root)" : "", clock_desc);
}
+void pci_save_ptm_state(struct pci_dev *dev)
+{
+ int ptm;
+ struct pci_cap_saved_state *save_state;
+ u16 *cap;
+
+ if (!pci_is_pcie(dev))
+ return;
+
+ ptm = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_PTM);
+ if (!ptm)
+ return;
+
+ save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_PTM);
+ if (!save_state) {
+ pci_err(dev, "no suspend buffer for PTM\n");
+ return;
+ }
+
+ cap = (u16 *)&save_state->cap.data[0];
+ pci_read_config_word(dev, ptm + PCI_PTM_CTRL, cap);
+}
+
+void pci_restore_ptm_state(struct pci_dev *dev)
+{
+ struct pci_cap_saved_state *save_state;
+ int ptm;
+ u16 *cap;
+
+ if (!pci_is_pcie(dev))
+ return;
+
+ save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_PTM);
+ ptm = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_PTM);
+ if (!save_state || !ptm)
+ return;
+
+ cap = (u16 *)&save_state->cap.data[0];
+ pci_write_config_word(dev, ptm + PCI_PTM_CTRL, *cap);
+}
+
void pci_ptm_init(struct pci_dev *dev)
{
int pos;
if (!pos)
return;
+ pci_add_ext_cap_save_buffer(dev, PCI_EXT_CAP_ID_PTM, sizeof(u16));
+
pci_read_config_dword(dev, pos + PCI_PTM_CAP, &cap);
local_clock = (cap & PCI_PTM_GRANULARITY_MASK) >> 8;