PCI: dwc: Add host_post_init() callback

This callback can be used by the platform drivers to do configuration
once all the devices are scanned. Like changing LNKCTL of all downstream
devices to enable ASPM etc...

Link: https://lore.kernel.org/linux-pci/20231010155914.9516-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index a7170fd0e847adaa87ed83bd3d6b2b02f0d36f13..7991f0e179b215a46726f6d8f2693409d49358a5 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -502,6 +502,9 @@ int dw_pcie_host_init(struct dw_pcie_rp *pp)
        if (ret)
                goto err_stop_link;
 
+       if (pp->ops->host_post_init)
+               pp->ops->host_post_init(pp);
+
        return 0;
 
 err_stop_link:

diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index ef0b2efa9f93e0d99c23c35dcdbd9726cb040663..efb4d4754fc8dddf23270bbf9759c1da5617022f 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -301,6 +301,7 @@ enum dw_pcie_ltssm {
 struct dw_pcie_host_ops {
        int (*host_init)(struct dw_pcie_rp *pp);
        void (*host_deinit)(struct dw_pcie_rp *pp);
+       void (*host_post_init)(struct dw_pcie_rp *pp);
        int (*msi_host_init)(struct dw_pcie_rp *pp);
        void (*pme_turn_off)(struct dw_pcie_rp *pp);
 };