1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2018-2020 Linaro Ltd.
12 struct ipa_power_data;
14 /* IPA device power management function block */
15 extern const struct dev_pm_ops ipa_pm_ops;
18 * ipa_core_clock_rate() - Return the current IPA core clock rate
21 * Return: The current clock rate (in Hz), or 0.
23 u32 ipa_core_clock_rate(struct ipa *ipa);
26 * ipa_power_modem_queue_stop() - Possibly stop the modem netdev TX queue
29 void ipa_power_modem_queue_stop(struct ipa *ipa);
32 * ipa_power_modem_queue_wake() - Possibly wake the modem netdev TX queue
35 void ipa_power_modem_queue_wake(struct ipa *ipa);
38 * ipa_power_modem_queue_active() - Report modem netdev TX queue active
41 void ipa_power_modem_queue_active(struct ipa *ipa);
44 * ipa_power_retention() - Control register retention on power collapse
46 * @enable: Whether retention should be enabled or disabled
48 void ipa_power_retention(struct ipa *ipa, bool enable);
51 * ipa_power_setup() - Set up IPA power management
54 * Return: 0 if successful, or a negative error code
56 int ipa_power_setup(struct ipa *ipa);
59 * ipa_power_teardown() - Inverse of ipa_power_setup()
62 void ipa_power_teardown(struct ipa *ipa);
65 * ipa_power_init() - Initialize IPA power management
67 * @data: Clock configuration data
69 * Return: A pointer to an ipa_power structure, or a pointer-coded error
71 struct ipa_power *ipa_power_init(struct device *dev,
72 const struct ipa_power_data *data);
75 * ipa_power_exit() - Inverse of ipa_power_init()
76 * @power: IPA power pointer
78 void ipa_power_exit(struct ipa_power *power);
80 #endif /* _IPA_POWER_H_ */