diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2013-08-24 00:32:33 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-08-26 14:09:03 -0400 |
| commit | 521deea64088bc885a76bd174241eaa3d3a6876f (patch) | |
| tree | a86d49829ec72acb03a15355f3b90420d06db336 /drivers/bcma/driver_pci.c | |
| parent | 780335acc815802dcee63d75f5589d43c3ccb402 (diff) | |
| download | talos-obmc-linux-521deea64088bc885a76bd174241eaa3d3a6876f.tar.gz talos-obmc-linux-521deea64088bc885a76bd174241eaa3d3a6876f.zip | |
bcma: add bcma_core_pci_power_save()
This enables or disables power saving on the PCIe bus when the wifi is
in operation or not.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/bcma/driver_pci.c')
| -rw-r--r-- | drivers/bcma/driver_pci.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c index d51d1943a202..c9fd6943ce45 100644 --- a/drivers/bcma/driver_pci.c +++ b/drivers/bcma/driver_pci.c @@ -31,7 +31,7 @@ static void bcma_pcie_write(struct bcma_drv_pci *pc, u32 address, u32 data) pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_DATA, data); } -static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u8 phy) +static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u16 phy) { u32 v; int i; @@ -55,7 +55,7 @@ static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u8 phy) } } -static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u8 device, u8 address) +static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u16 device, u8 address) { int max_retries = 10; u16 ret = 0; @@ -98,7 +98,7 @@ static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u8 device, u8 address) return ret; } -static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u8 device, +static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u16 device, u8 address, u16 data) { int max_retries = 10; @@ -137,6 +137,13 @@ static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u8 device, pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, 0); } +static u16 bcma_pcie_mdio_writeread(struct bcma_drv_pci *pc, u16 device, + u8 address, u16 data) +{ + bcma_pcie_mdio_write(pc, device, address, data); + return bcma_pcie_mdio_read(pc, device, address); +} + /************************************************** * Workarounds. **************************************************/ @@ -203,6 +210,25 @@ static void bcma_core_pci_config_fixup(struct bcma_drv_pci *pc) } } +static void bcma_core_pci_power_save(struct bcma_drv_pci *pc, bool up) +{ + u16 data; + + if (pc->core->id.rev >= 15 && pc->core->id.rev <= 20) { + data = up ? 0x74 : 0x7C; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7F64); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } else if (pc->core->id.rev >= 21 && pc->core->id.rev <= 22) { + data = up ? 0x75 : 0x7D; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7E65); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } +} + /************************************************** * Init. **************************************************/ @@ -284,6 +310,8 @@ void bcma_core_pci_up(struct bcma_bus *bus) pc = &bus->drv_pci[0]; + bcma_core_pci_power_save(pc, true); + bcma_core_pci_extend_L1timer(pc, true); } EXPORT_SYMBOL_GPL(bcma_core_pci_up); @@ -298,5 +326,7 @@ void bcma_core_pci_down(struct bcma_bus *bus) pc = &bus->drv_pci[0]; bcma_core_pci_extend_L1timer(pc, false); + + bcma_core_pci_power_save(pc, false); } EXPORT_SYMBOL_GPL(bcma_core_pci_down); |
