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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2015-08-02 22:20:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-04 03:33:54 +0300 |
| commit | bb9f4d26dda7d2a875cadc0f7eedee3d65d3d1f5 (patch) | |
| tree | ae3cec0e9b0011eeb724bd87bc289ffc09d8f3ea /drivers/misc/mei/hw-me.c | |
| parent | 11830486c5717c713bb363b14944cda39e3034f9 (diff) | |
| download | linux-bb9f4d26dda7d2a875cadc0f7eedee3d65d3d1f5.tar.xz | |
mei: me: d0i3: add flag to indicate D0i3 support
Detect d0i3 low power state during hw configuration,
the value is set in HFS_1 pci config reigister.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-me.c')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 43d7101ff993..17d6894b0fd2 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -176,12 +176,20 @@ static int mei_me_fw_status(struct mei_device *dev, */ static void mei_me_hw_config(struct mei_device *dev) { + struct pci_dev *pdev = to_pci_dev(dev->dev); struct mei_me_hw *hw = to_me_hw(dev); - u32 hcsr = mei_hcsr_read(dev); + u32 hcsr, reg; + /* Doesn't change in runtime */ + hcsr = mei_hcsr_read(dev); dev->hbuf_depth = (hcsr & H_CBD) >> 24; hw->pg_state = MEI_PG_OFF; + + reg = 0; + pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); + hw->d0i3_supported = + ((reg & PCI_CFG_HFS_1_D0I3_MSK) == PCI_CFG_HFS_1_D0I3_MSK); } /** |