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