Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b16c3571 authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

mei: me: add power gating isolation register write wrappers 



Add entry and exit power gating isolation register
write handler.

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ad4d355b

drivers/misc/mei/hw-me.c

+29 −0
Original line number Diff line number Diff line
@@ -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

 *