lpss.h

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef SOC_INTEL_COMMON_BLOCK_LPSS_H
#define SOC_INTEL_COMMON_BLOCK_LPSS_H
 
#include <device/device.h>
#include <stdint.h>
 
/* D0 and D3 enable config */
enum lpss_pwr_state {
        STATE_D0 = 0,
        STATE_D3 = 3
};
 
/* Gets controller out of reset */
void lpss_reset_release(uintptr_t base);
 
/*
 * Update clock divider parameters. Clock frequency is dependent on source
 * clock frequency of each IP block. Resulting clock will be src_freq * (M / N).
 */
void lpss_clk_update(uintptr_t base, uint32_t clk_m_val, uint32_t clk_n_val);
 
/* Check if controller is in reset. */
bool lpss_is_controller_in_reset(uintptr_t base);
 
/* Set controller power state to D0 or D3*/
void lpss_set_power_state(pci_devfn_t devfn, enum lpss_pwr_state state);
 
#endif  /* SOC_INTEL_COMMON_BLOCK_LPSS_H */