diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2014-03-18 22:51:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-03 19:20:23 -0400 |
| commit | b16c35716b843acdbe562bc0068580c50db203ff (patch) | |
| tree | 8a0cef597fb7a63b0803305f1690988793310634 /drivers | |
| parent | ad4d355b4b9764373baaf9e8de6613919e1342fa (diff) | |
| download | linux-b16c35716b843acdbe562bc0068580c50db203ff.tar.bz2 | |
mei: me: add power gating isolation register write wrappers
Add entry and exit power gating isolation register
write handler.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/mei/hw-me.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 8dbdaaef1af5..fc5d001983b3 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -431,6 +431,35 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer, } /** + * mei_me_pg_enter - write pg enter register to mei device. + * + * @dev: the device structure + */ +static void mei_me_pg_enter(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + reg |= H_HPG_CSR_PGI; + mei_me_reg_write(hw, H_HPG_CSR, reg); +} + +/** + * mei_me_pg_enter - write pg enter register to mei device. + * + * @dev: the device structure + */ +static void mei_me_pg_exit(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 reg = mei_me_reg_read(hw, H_HPG_CSR); + + WARN(!(reg & H_HPG_CSR_PGI), "PGI is not set\n"); + + reg |= H_HPG_CSR_PGIHEXR; + mei_me_reg_write(hw, H_HPG_CSR, reg); +} + +/** * mei_me_irq_quick_handler - The ISR of the MEI device * * @irq: The irq number |