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mei: me: d0i3: add flag to indicate D0i3 support

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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>
This commit is contained in:
Alexander Usyskin
2015-08-02 22:20:51 +03:00
committed by Greg Kroah-Hartman
parent 11830486c5
commit bb9f4d26dd
3 changed files with 14 additions and 3 deletions
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10
drivers/misc/mei/hw-me.c
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@@ -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, &reg);
hw->d0i3_supported =
((reg & PCI_CFG_HFS_1_D0I3_MSK) == PCI_CFG_HFS_1_D0I3_MSK);
}
/**