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Revert "PCI: rockchip: dw: remove .link_up() hook from struct dw_pcie… #221

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merged 1 commit into from
Aug 16, 2024
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Revert "PCI: rockchip: dw: remove .link_up() hook from struct dw_pcie… #221

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13 changes: 13 additions & 0 deletions drivers/pci/controller/dwc/pcie-dw-rockchip.c
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Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,18 @@ static inline void rk_pcie_enable_ltssm(struct rk_pcie *rk_pcie)
rk_pcie_writel_apb(rk_pcie, 0x0, 0xC000C);
}

static int rk_pcie_link_up(struct dw_pcie *pci)
{
struct rk_pcie *rk_pcie = to_rk_pcie(pci);
u32 val;

val = rk_pcie_readl_apb(rk_pcie, PCIE_CLIENT_LTSSM_STATUS);
if ((val & (RDLH_LINKUP | SMLH_LINKUP)) == 0x30000)
return 1;

return 0;
}

static void rk_pcie_enable_debug(struct rk_pcie *rk_pcie)
{
if (!IS_ENABLED(CONFIG_DEBUG_FS))
Expand Down Expand Up @@ -814,6 +826,7 @@ MODULE_DEVICE_TABLE(of, rk_pcie_of_match);

static const struct dw_pcie_ops dw_pcie_ops = {
.start_link = rk_pcie_establish_link,
.link_up = rk_pcie_link_up,
};

static void rk_pcie_fast_link_setup(struct rk_pcie *rk_pcie)
Expand Down
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