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PCI: layerscape: Factor out ls_pcie_establish_link() 

All other DesignWare-based drivers have a *_establish_link() function.

This functionality is trivial for Layerscape, but factor out a
ls_pcie_establish_link() for consistency with the other drivers.  No
functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
This commit is contained in:
Bjorn Helgaas 2015-06-02 16:24:25 -05:00
parent 1200edcbdd
commit 1d3f9bac71
1 changed files with 13 additions and 6 deletions
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19
drivers/pci/host/pci-layerscape.c
View File

@ -62,23 +62,30 @@ static int ls_pcie_link_up(struct pcie_port *pp)
return 1;
}
static void ls_pcie_host_init(struct pcie_port *pp)
static int ls_pcie_establish_link(struct pcie_port *pp)
{
struct ls_pcie *pcie = to_ls_pcie(pp);
int count = 0;
u32 val;
dw_pcie_setup_rc(pp);
while (!dw_pcie_link_up(pp)) {
usleep_range(100, 1000);
count++;
if (count >= 200) {
dev_err(pp->dev, "phy link never came up\n");
return;
return -EINVAL;
}
}
return 0;
}
static void ls_pcie_host_init(struct pcie_port *pp)
{
struct ls_pcie *pcie = to_ls_pcie(pp);
u32 val;
dw_pcie_setup_rc(pp);
ls_pcie_establish_link(pp);
/*
* LS1021A Workaround for internal TKT228622
* to fix the INTx hang issue