u-boot/arch/x86/include/asm/lpss.h
Simon Glass b84d4d0932 x86: Add low-power subsystem (lpss) support
This subsystem is present on various Intel SoCs.

Add very basic support for taking an lpss device out of reset.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:25 +08:00

36 lines
685 B
C

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2019 Google LLC
*/
#ifndef __ASM_LPSS_H
#define __ASM_LPSS_H
struct udevice;
/* D0 and D3 enable config */
enum lpss_pwr_state {
STATE_D0 = 0,
STATE_D3 = 3
};
/**
* lpss_reset_release() - Release device from reset
*
* This is used for devices which have LPSS support.
*
* @regs: Pointer to device registers
*/
void lpss_reset_release(void *regs);
/**
* lpss_set_power_state() - Change power state of a device
*
* This is used for devices which have LPSS support.
*
* @dev: Device to update
* @state: New power state to set
*/
void lpss_set_power_state(struct udevice *dev, enum lpss_pwr_state state);
#endif