forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.5 KiB
64 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
|
|
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
|
* Copyright (C) 2018-2020 Linaro Ltd. |
|
*/ |
|
#ifndef _IPA_CLOCK_H_ |
|
#define _IPA_CLOCK_H_ |
|
|
|
struct device; |
|
|
|
struct ipa; |
|
struct ipa_clock_data; |
|
|
|
/** |
|
* ipa_clock_rate() - Return the current IPA core clock rate |
|
* @ipa: IPA structure |
|
* |
|
* Return: The current clock rate (in Hz), or 0. |
|
*/ |
|
u32 ipa_clock_rate(struct ipa *ipa); |
|
|
|
/** |
|
* ipa_clock_init() - Initialize IPA clocking |
|
* @dev: IPA device |
|
* @data: Clock configuration data |
|
* |
|
* Return: A pointer to an ipa_clock structure, or a pointer-coded error |
|
*/ |
|
struct ipa_clock *ipa_clock_init(struct device *dev, |
|
const struct ipa_clock_data *data); |
|
|
|
/** |
|
* ipa_clock_exit() - Inverse of ipa_clock_init() |
|
* @clock: IPA clock pointer |
|
*/ |
|
void ipa_clock_exit(struct ipa_clock *clock); |
|
|
|
/** |
|
* ipa_clock_get() - Get an IPA clock reference |
|
* @ipa: IPA pointer |
|
* |
|
* This call blocks if this is the first reference. |
|
*/ |
|
void ipa_clock_get(struct ipa *ipa); |
|
|
|
/** |
|
* ipa_clock_get_additional() - Get an IPA clock reference if not first |
|
* @ipa: IPA pointer |
|
* |
|
* This returns immediately, and only takes a reference if not the first |
|
*/ |
|
bool ipa_clock_get_additional(struct ipa *ipa); |
|
|
|
/** |
|
* ipa_clock_put() - Drop an IPA clock reference |
|
* @ipa: IPA pointer |
|
* |
|
* This drops a clock reference. If the last reference is being dropped, |
|
* the clock is stopped and RX endpoints are suspended. This call will |
|
* not block unless the last reference is dropped. |
|
*/ |
|
void ipa_clock_put(struct ipa *ipa); |
|
|
|
#endif /* _IPA_CLOCK_H_ */
|
|
|