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 | 11 +++++++++++
drivers/pci/controller/dwc/pcie-designware.h | 2 ++
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 f9182f8..60cc323 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -463,6 +463,16 @@ dw_pcie_ep_get_features(struct pci_epc *epc, u8 func_no, u8 vfunc_no)
return ep->ops->get_features(ep);
}
+static int dw_pcie_ep_wakeup_host(struct pci_epc *epc, u8 func_no, u8 vfunc_no)
+{
+ struct dw_pcie_ep *ep = epc_get_drvdata(epc);
+
+ if (!ep->ops->wakeup_host)
+ return -EINVAL;
+
+ return ep->ops->wakeup_host(ep, func_no);
+}
+
static const struct pci_epc_ops epc_ops = {
.write_header = dw_pcie_ep_write_header,
.set_bar = dw_pcie_ep_set_bar,
@@ -477,6 +487,7 @@ 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,
};
int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 79713ce..e338591 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -330,6 +330,8 @@ struct dw_pcie_ep_ops {
* driver.
*/
unsigned int (*func_conf_select)(struct dw_pcie_ep *ep, u8 func_no);
+
+ int (*wakeup_host)(struct dw_pcie_ep *ep, u8 func_no);
};
struct dw_pcie_ep_func {
--
2.7.4
