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mei: me: add power gating isolation register write wrappers

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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>
This commit is contained in:
Tomas Winkler 2014-03-18 22:51:57 +02:00 committed by Greg Kroah-Hartman
parent ad4d355b4b
commit b16c35716b
1 changed files with 29 additions and 0 deletions
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29
drivers/misc/mei/hw-me.c
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@ -430,6 +430,35 @@ static int mei_me_read_slots(struct mei_device *dev, unsigned char *buffer,
return 0;
}
/**
* 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
*