| /* |
| * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef _GOVERNOR_BW_HWMON_H |
| #define _GOVERNOR_BW_HWMON_H |
| |
| #include <linux/kernel.h> |
| #include <linux/devfreq.h> |
| |
| /** |
| * struct bw_hwmon - dev BW HW monitor info |
| * @start_hwmon: Start the HW monitoring of the dev BW |
| * @stop_hwmon: Stop the HW monitoring of dev BW |
| * @set_thres: Set the count threshold to generate an IRQ |
| * @get_bytes_and_clear: Get the bytes transferred since the last call |
| * and reset the counter to start over. |
| * @set_throttle_adj: Set throttle adjust field to the given value |
| * @get_throttle_adj: Get the value written to throttle adjust field |
| * @dev: Pointer to device that this HW monitor can |
| * monitor. |
| * @of_node: OF node of device that this HW monitor can |
| * monitor. |
| * @gov: devfreq_governor struct that should be used |
| * when registering this HW monitor with devfreq. |
| * Only the name field is expected to be |
| * initialized. |
| * @df: Devfreq node that this HW monitor is being |
| * used for. NULL when not actively in use and |
| * non-NULL when in use. |
| * |
| * One of dev, of_node or governor_name needs to be specified for a |
| * successful registration. |
| * |
| */ |
| struct bw_hwmon { |
| int (*start_hwmon)(struct bw_hwmon *hw, unsigned long mbps); |
| void (*stop_hwmon)(struct bw_hwmon *hw); |
| int (*suspend_hwmon)(struct bw_hwmon *hw); |
| int (*resume_hwmon)(struct bw_hwmon *hw); |
| unsigned long (*set_thres)(struct bw_hwmon *hw, unsigned long bytes); |
| unsigned long (*set_hw_events)(struct bw_hwmon *hw, |
| unsigned int sample_ms); |
| unsigned long (*get_bytes_and_clear)(struct bw_hwmon *hw); |
| int (*set_throttle_adj)(struct bw_hwmon *hw, uint adj); |
| u32 (*get_throttle_adj)(struct bw_hwmon *hw); |
| struct device *dev; |
| struct device_node *of_node; |
| struct devfreq_governor *gov; |
| |
| unsigned long up_wake_mbps; |
| unsigned long undo_over_req_mbps; |
| unsigned long down_wake_mbps; |
| unsigned int down_cnt; |
| |
| struct devfreq *df; |
| }; |
| |
| #ifdef CONFIG_DEVFREQ_GOV_QCOM_BW_HWMON |
| int register_bw_hwmon(struct device *dev, struct bw_hwmon *hwmon); |
| int update_bw_hwmon(struct bw_hwmon *hwmon); |
| int bw_hwmon_sample_end(struct bw_hwmon *hwmon); |
| #else |
| static inline int register_bw_hwmon(struct device *dev, |
| struct bw_hwmon *hwmon) |
| { |
| return 0; |
| } |
| static inline int update_bw_hwmon(struct bw_hwmon *hwmon) |
| { |
| return 0; |
| } |
| static inline int bw_hwmon_sample_end(struct bw_hwmon *hwmon) |
| { |
| return 0; |
| } |
| #endif |
| |
| #endif /* _GOVERNOR_BW_HWMON_H */ |