The PCIe runtime PM is disabled by default, add special treatment to allow runtime PM for Intel Broxton platform.
Signed-off-by: Qi Zheng <[email protected]> Signed-off-by: Qipeng Zha <[email protected]> --- drivers/pci/quirks.c | 13 +++++++++++++ include/linux/pci_ids.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7e32730..a745d06 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -25,6 +25,7 @@ #include <linux/sched.h> #include <linux/ktime.h> #include <linux/mm.h> +#include <linux/pm_runtime.h> #include <asm/dma.h> /* isa_dma_bridge_buggy */ #include "pci.h" @@ -2989,6 +2990,18 @@ static void quirk_intel_ntb(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb); + +/*PCIe ports on Intel Broxton should support runtime PM*/ +static void quirk_pcie_enable_rtpm(struct pci_dev *dev) +{ + pm_runtime_put_noidle(&dev->dev); + pm_runtime_allow(&dev->dev); +} +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, + PCI_DEVICE_ID_INTEL_BXT_B0_PCIe_0, quirk_pcie_enable_rtpm); +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, + PCI_DEVICE_ID_INTEL_BXT_B0_PCIe_1, quirk_pcie_enable_rtpm); + static ktime_t fixup_debug_start(struct pci_dev *dev, void (*fn)(struct pci_dev *dev)) { diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index d9ba49c..731f05f 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2596,6 +2596,8 @@ #define PCI_DEVICE_ID_INTEL_82840_HB 0x1a21 #define PCI_DEVICE_ID_INTEL_82845_HB 0x1a30 #define PCI_DEVICE_ID_INTEL_IOAT 0x1a38 +#define PCI_DEVICE_ID_INTEL_BXT_B0_PCIe_0 0x1ad6 +#define PCI_DEVICE_ID_INTEL_BXT_B0_PCIe_1 0x1ad7 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MIN 0x1c41 #define PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MAX 0x1c5f #define PCI_DEVICE_ID_INTEL_PATSBURG_LPC_0 0x1d40 -- 1.8.3.2
