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authorRafał Miłecki <zajec5@gmail.com>2015-02-08 19:11:47 +0300
committerKalle Valo <kvalo@codeaurora.org>2015-03-02 17:59:45 +0300
commit4186721d02b71ae943e60bbf50d3488fd5fd6adb (patch)
tree7623f94d3baa042f5090780bb285f5be1e6ff847 /drivers/bcma
parentba8b6ae6e91ed4d866f83b026138cc75a955e101 (diff)
downloadlinux-4186721d02b71ae943e60bbf50d3488fd5fd6adb.tar.xz
bcma: add helpers bringing PCIe hosted bus up / down
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 <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/bcma')
-rw-r--r--drivers/bcma/bcma_private.h2
-rw-r--r--drivers/bcma/driver_pci.c20
-rw-r--r--drivers/bcma/host_pci.c28
3 files changed, 32 insertions, 18 deletions
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index ac6c5fca906d..351f4afdad25 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -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);
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index 786666488a2d..cf92bfa7eae0 100644
--- a/drivers/bcma/driver_pci.c
+++ b/drivers/bcma/driver_pci.c
@@ -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);
diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c
index 53c6a8a58859..8dd37dc94cae 100644
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -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);