sof/posix/include/rtos/clk.h

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/* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
*
* Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
* Janusz Jankowski <janusz.jankowski@linux.intel.com>
*/
#ifndef __SOF_LIB_CLK_H__
#define __SOF_LIB_CLK_H__
#include <platform/lib/clk.h>
#include <rtos/sof.h>
#include <rtos/spinlock.h>
#include <stdbool.h>
#include <stdint.h>
struct timer;
#define CLOCK_NOTIFY_PRE 0
#define CLOCK_NOTIFY_POST 1
struct clock_notify_data {
uint32_t old_freq;
uint32_t old_ticks_per_msec;
uint32_t freq;
uint32_t ticks_per_msec;
uint32_t message;
};
struct freq_table {
uint32_t freq;
uint32_t ticks_per_msec;
};
struct clock_info {
uint32_t freqs_num;
const struct freq_table *freqs;
uint32_t default_freq_idx;
uint32_t current_freq_idx;
uint32_t lowest_freq_idx; /* lowest possible clock */
uint32_t notification_id;
uint32_t notification_mask;
/* persistent change clock value in active state, caller must hold clk_lock */
int (*set_freq)(int clock, int freq_idx);
/* temporary change clock - don't modify default clock settings */
void (*low_power_mode)(int clock, bool enable);
};
uint32_t clock_get_freq(int clock);
void clock_set_freq(int clock, uint32_t hz);
void clock_low_power_mode(int clock, bool enable);
uint64_t clock_ms_to_ticks(int clock, uint64_t ms);
uint64_t clock_us_to_ticks(int clock, uint64_t us);
uint64_t clock_ns_to_ticks(int clock, uint64_t ns);
uint64_t clock_ticks_per_sample(int clock, uint32_t sample_rate);
extern struct k_spinlock clk_lock;
static inline k_spinlock_key_t clock_lock(void)
{
return k_spin_lock(&clk_lock);
}
static inline void clock_unlock(k_spinlock_key_t key)
{
k_spin_unlock(&clk_lock, key);
}
static inline struct clock_info *clocks_get(void)
{
return sof_get()->clocks;
}
#endif /* __SOF_LIB_CLK_H__ */