Add wakeup host op to wake up host from D3cold or D3hot.
Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-designware-ep.c | 12 ++++++++++++
drivers/pci/controller/dwc/pcie-designware.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 43ba5c6738df..a20b6bec6078 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -440,6 +440,17 @@ dw_pcie_ep_get_features(struct pci_epc *epc, u8 func_no, u8 vfunc_no)
return ep->ops->get_features(ep);
}
+static bool dw_pcie_ep_wakeup_host(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
+ bool send_pme)
+{
+ struct dw_pcie_ep *ep = epc_get_drvdata(epc);
+
+ if (!ep->ops->wakeup_host)
+ return false;
+
+ return ep->ops->wakeup_host(ep, func_no, send_pme);
+}
+
static const struct pci_epc_ops epc_ops = {
.write_header = dw_pcie_ep_write_header,
.set_bar = dw_pcie_ep_set_bar,
@@ -454,6 +465,7 @@ static const struct pci_epc_ops epc_ops = {
.start = dw_pcie_ep_start,
.stop = dw_pcie_ep_stop,
.get_features = dw_pcie_ep_get_features,
+ .wakeup_host = dw_pcie_ep_wakeup_host,
};
/**
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 53c4c8f399c8..da15ccd7a3f5 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -365,6 +365,7 @@ struct dw_pcie_ep_ops {
*/
unsigned int (*get_dbi_offset)(struct dw_pcie_ep *ep, u8 func_no);
unsigned int (*get_dbi2_offset)(struct dw_pcie_ep *ep, u8 func_no);
+ bool (*wakeup_host)(struct dw_pcie_ep *ep, u8 func_no, bool send_pme);
};
struct dw_pcie_ep_func {
--
2.42.0
