drivers/net/ipa/ipa_power.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
   4  * Copyright (C) 2018-2024 Linaro Ltd.
   5  */
   6 #ifndef _IPA_POWER_H_
   7 #define _IPA_POWER_H_
   8
   9 #include <linux/types.h>
  10
  11 struct device;
  12
  13 struct ipa;
  14 struct ipa_power_data;
  15
  16 /* IPA device power management function block */
  17 extern const struct dev_pm_ops ipa_pm_ops;
  18
  19 /**
  20  * ipa_core_clock_rate() - Return the current IPA core clock rate
  21  * @ipa:        IPA structure
  22  *
  23  * Return: The current clock rate (in Hz), or 0.
  24  */
  25 u32 ipa_core_clock_rate(struct ipa *ipa);
  26
  27 /**
  28  * ipa_power_retention() - Control register retention on power collapse
  29  * @ipa:        IPA pointer
  30  * @enable:     Whether retention should be enabled or disabled
  31  */
  32 void ipa_power_retention(struct ipa *ipa, bool enable);
  33
  34 /**
  35  * ipa_power_init() - Initialize IPA power management
  36  * @dev:        IPA device
  37  * @data:       Clock configuration data
  38  *
  39  * Return:      A pointer to an ipa_power structure, or a pointer-coded error
  40  */
  41 struct ipa_power *ipa_power_init(struct device *dev,
  42                                  const struct ipa_power_data *data);
  43
  44 /**
  45  * ipa_power_exit() - Inverse of ipa_power_init()
  46  * @power:      IPA power pointer
  47  */
  48 void ipa_power_exit(struct ipa_power *power);
  49
  50 #endif /* _IPA_POWER_H_ */