1 /*- 2 * Copyright (c) 2025 The FreeBSD Foundation 3 * Copyright (c) 2025 Jean-Sébastien Pédron 4 * 5 * This software was developed by Jean-Sébastien Pédron under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _LINUXKPI_LINUX_ACPI_AMD_WBRF_H_ 31 #define _LINUXKPI_LINUX_ACPI_AMD_WBRF_H_ 32 33 #include <linux/device.h> 34 #include <linux/notifier.h> 35 36 #define MAX_NUM_OF_WBRF_RANGES 11 37 38 #define WBRF_RECORD_ADD 0x0 39 #define WBRF_RECORD_REMOVE 0x1 40 41 struct freq_band_range { 42 uint64_t start; 43 uint64_t end; 44 }; 45 46 struct wbrf_ranges_in_out { 47 uint64_t num_of_ranges; 48 struct freq_band_range band_list[MAX_NUM_OF_WBRF_RANGES]; 49 }; 50 51 enum wbrf_notifier_actions { 52 WBRF_CHANGED, 53 }; 54 55 /* 56 * The following functions currently have dummy implementations that, on Linux, 57 * are used when CONFIG_AMD_WBRF is not set at compile time. 58 */ 59 60 static inline bool 61 acpi_amd_wbrf_supported_consumer(struct device *dev) 62 { 63 return (false); 64 } 65 66 static inline int 67 acpi_amd_wbrf_add_remove(struct device *dev, uint8_t action, 68 struct wbrf_ranges_in_out *in) 69 { 70 return (-ENODEV); 71 } 72 73 static inline bool 74 acpi_amd_wbrf_supported_producer(struct device *dev) 75 { 76 return (false); 77 } 78 79 static inline int 80 amd_wbrf_retrieve_freq_band(struct device *dev, struct wbrf_ranges_in_out *out) 81 { 82 return (-ENODEV); 83 } 84 85 static inline int 86 amd_wbrf_register_notifier(struct notifier_block *nb) 87 { 88 return (-ENODEV); 89 } 90 91 static inline int 92 amd_wbrf_unregister_notifier(struct notifier_block *nb) 93 { 94 return (-ENODEV); 95 } 96 97 #endif /* _LINUXKPI_LINUX_ACPI_AMD_WBRF_H_ */ 98