bcma: add method to power up and down the PCIe core by wifi driver

The wifi driver should tell the PCIe core that it is now in operation
so that some workarounds can be applied and the power state is changed.
This should replace the call to bcma_core_pci_extend_L1timer by the
brcmsmac driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index cf7a476a519f..6ea817fae59f 100644
--- a/drivers/bcma/driver_pci.c
+++ b/drivers/bcma/driver_pci.c
@@ -275,3 +275,29 @@ void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend)
         bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG);
 }
 EXPORT_SYMBOL_GPL(bcma_core_pci_extend_L1timer);
+
+void bcma_core_pci_up(struct bcma_bus *bus)
+{
+        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)
+{
+        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);