[PATCH v6 6/9] PCI: brcmstb: split brcm_pcie_setup() into two funcs

Jim Quinlan
2021-10-29T20:04:01Z

We need to split a function in two so that the driver can take advantage of
the recently added function pci_subdev_prepare() which is a member
of struct pci_host_bridge.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
---
drivers/pci/controller/pcie-brcmstb.c | 30 +++++++++++++++++++--------
1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index cc30215f5a43..ba4d6daf312c 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -863,17 +863,10 @@ static inline int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie,

static int brcm_pcie_setup(struct brcm_pcie *pcie)
{
- struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
u64 rc_bar2_offset, rc_bar2_size;
void __iomem *base = pcie->base;
- struct device *dev = pcie->dev;
- struct resource_entry *entry;
- bool ssc_good = false;
- struct resource *res;
- int num_out_wins = 0;
- u16 nlw, cls, lnksta;
- int i, ret, memc;
- u32 tmp, burst, aspm_support;
+ int ret, memc;
+ u32 tmp, burst;

/* Reset the bridge */
pcie->bridge_sw_init_set(pcie, 1);
@@ -956,6 +949,21 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)

if (pcie->gen)
brcm_pcie_set_gen(pcie, pcie->gen);
+ return 0;
+}
+
+static int brcm_pcie_linkup(struct brcm_pcie *pcie)
+{
+ struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
+ struct device *dev = pcie->dev;
+ void __iomem *base = pcie->base;
+ struct resource_entry *entry;
+ struct resource *res;
+ int num_out_wins = 0;
+ u16 nlw, cls, lnksta;
+ bool ssc_good = false;
+ u32 aspm_support, tmp;
+ int ret, i;

/* Unassert the fundamental reset */
pcie->perst_set(pcie, 0);
@@ -1186,6 +1194,10 @@ static int brcm_pcie_resume(struct device *dev)
if (ret)
goto err_reset;

+ ret = brcm_pcie_linkup(pcie);
+ if (ret)
+ goto err_reset;
+
if (pcie->msi)
brcm_msi_set_regs(pcie->msi);

--
2.17.1