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bcma: add helpers bringing PCIe hosted bus up / down

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Bringing PCIe hosted bus up requires operating on host-related core.
Since we plan to support PCIe Gen 2 devices we should provide a helper
picking the correct one (PCIE or PCIE2).

Signed-off-by: Rafał Miłecki <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
This commit is contained in:
Rafał Miłecki 2015-02-08 17:11:47 +01:00 • committed by Kalle Valo
commit 4186721d02
7 changed files with 41 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/bcma/bcma_private.h
View file

@ -101,6 +101,8 @@ static inline void __exit bcma_host_soc_unregister_driver(void)
/* driver_pci.c */
u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address);
void bcma_core_pci_up(struct bcma_drv_pci *pc);
void bcma_core_pci_down(struct bcma_drv_pci *pc);
extern int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc);

20
drivers/bcma/driver_pci.c
View file

@ -328,28 +328,12 @@ static void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend)
bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
}
void bcma_core_pci_up(struct bcma_bus *bus)
void bcma_core_pci_up(struct bcma_drv_pci *pc)
{
struct bcma_drv_pci *pc;
if (bus->hosttype != BCMA_HOSTTYPE_PCI)
return;
pc = &bus->drv_pci[0];
bcma_core_pci_extend_L1timer(pc, true);
}
EXPORT_SYMBOL_GPL(bcma_core_pci_up);
void bcma_core_pci_down(struct bcma_bus *bus)
void bcma_core_pci_down(struct bcma_drv_pci *pc)
{
struct bcma_drv_pci *pc;
if (bus->hosttype != BCMA_HOSTTYPE_PCI)
return;
pc = &bus->drv_pci[0];
bcma_core_pci_extend_L1timer(pc, false);
}
EXPORT_SYMBOL_GPL(bcma_core_pci_down);

28
drivers/bcma/host_pci.c
View file

@ -310,3 +310,31 @@ void __exit bcma_host_pci_exit(void)
{
pci_unregister_driver(&bcma_pci_bridge_driver);
}
/**************************************************
* Runtime ops for drivers.
**************************************************/
/* See also pcicore_up */
void bcma_host_pci_up(struct bcma_bus *bus)
{
if (bus->hosttype != BCMA_HOSTTYPE_PCI)
return;
if (bus->host_is_pcie2)
pr_warn("Bringing up bus with PCIe Gen 2 host is unsupported yet\n");
else
bcma_core_pci_up(&bus->drv_pci[0]);
}
EXPORT_SYMBOL_GPL(bcma_host_pci_up);
/* See also pcicore_down */
void bcma_host_pci_down(struct bcma_bus *bus)
{
if (bus->hosttype != BCMA_HOSTTYPE_PCI)
return;
if (!bus->host_is_pcie2)
bcma_core_pci_down(&bus->drv_pci[0]);
}
EXPORT_SYMBOL_GPL(bcma_host_pci_down);