A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

PCI: designware: Add default link up check if sub-driver doesn't override

Browse source 
Add a default DesignWare "link_up" test for use when a sub-driver doesn't
supply its own pcie_host_ops.link_up() method.

[bhelgaas: changelog, split into its own patch]
Signed-off-by: Joao Pinto <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Acked-by: Pratyush Anand <[email protected]>
This commit is contained in:
Joao Pinto 2016-03-10 14:44:44 -06:00 • committed by Bjorn Helgaas
commit dac29e6c54
1 changed files with 9 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

10
drivers/pci/host/pcie-designware.c
View file

@ -70,6 +70,11 @@
#define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16)
#define PCIE_ATU_UPPER_TARGET 0x91C
/* PCIe Port Logic registers */
#define PLR_OFFSET 0x700
#define PCIE_PHY_DEBUG_R1 (PLR_OFFSET + 0x2c)
#define PCIE_PHY_DEBUG_R1_LINK_UP 0x00000010
static struct pci_ops dw_pcie_ops;
int dw_pcie_cfg_read(void __iomem *addr, int size, u32 *val)
@ -401,10 +406,13 @@ int dw_pcie_wait_for_link(struct pcie_port *pp)
int dw_pcie_link_up(struct pcie_port *pp)
{
u32 val;
if (pp->ops->link_up)
return pp->ops->link_up(pp);
return 0;
val = readl(pp->dbi_base + PCIE_PHY_DEBUG_R1);
return val & PCIE_PHY_DEBUG_R1_LINK_UP;
}
static int dw_pcie_msi_map(struct irq_domain *domain, unsigned int irq,