Add a rockchip_pcie_ltssm() helper function that reads the LTSSM status.
This helper will be used in additional places in follow-up commits.
Signed-off-by: Niklas Cassel <cassel@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-dw-rockchip.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
index 3dfed08ef456..1380e3a5284b 100644
--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
@@ -143,6 +143,11 @@ static int rockchip_pcie_init_irq_domain(struct rockchip_pcie *rockchip)
return 0;
}
+static u32 rockchip_pcie_get_ltssm(struct rockchip_pcie *rockchip)
+{
+ return rockchip_pcie_readl_apb(rockchip, PCIE_CLIENT_LTSSM_STATUS);
+}
+
static void rockchip_pcie_enable_ltssm(struct rockchip_pcie *rockchip)
{
rockchip_pcie_writel_apb(rockchip, PCIE_CLIENT_ENABLE_LTSSM,
@@ -152,7 +157,7 @@ static void rockchip_pcie_enable_ltssm(struct rockchip_pcie *rockchip)
static int rockchip_pcie_link_up(struct dw_pcie *pci)
{
struct rockchip_pcie *rockchip = to_rockchip_pcie(pci);
- u32 val = rockchip_pcie_readl_apb(rockchip, PCIE_CLIENT_LTSSM_STATUS);
+ u32 val = rockchip_pcie_get_ltssm(rockchip);
if ((val & PCIE_LINKUP) == PCIE_LINKUP &&
(val & PCIE_LTSSM_STATUS_MASK) == PCIE_L0S_ENTRY)
--
2.45.2
