1 /* SPDX-License-Identifier: GPL-2.0 2 * 3 * Copyright (C) 2013-15, Intel Corporation. All rights reserved. 4 */ 5 6 #ifndef __LINUX_SND_SOC_ACPI_H 7 #define __LINUX_SND_SOC_ACPI_H 8 9 #include <linux/stddef.h> 10 #include <linux/acpi.h> 11 #include <linux/mod_devicetable.h> 12 13 struct snd_soc_acpi_package_context { 14 char *name; /* package name */ 15 int length; /* number of elements */ 16 struct acpi_buffer *format; 17 struct acpi_buffer *state; 18 bool data_valid; 19 }; 20 21 /* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */ 22 #define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1) 23 24 #if IS_ENABLED(CONFIG_ACPI) 25 /* acpi match */ 26 struct snd_soc_acpi_mach * 27 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines); 28 29 bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 30 struct snd_soc_acpi_package_context *ctx); 31 32 /* check all codecs */ 33 struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg); 34 35 #else 36 /* acpi match */ 37 static inline struct snd_soc_acpi_mach * 38 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines) 39 { 40 return NULL; 41 } 42 43 static inline bool 44 snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 45 struct snd_soc_acpi_package_context *ctx) 46 { 47 return false; 48 } 49 50 /* check all codecs */ 51 static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg) 52 { 53 return NULL; 54 } 55 #endif 56 57 /** 58 * snd_soc_acpi_mach_params: interface for machine driver configuration 59 * 60 * @acpi_ipc_irq_index: used for BYT-CR detection 61 * @platform: string used for HDaudio codec support 62 * @codec_mask: used for HDAudio support 63 */ 64 struct snd_soc_acpi_mach_params { 65 u32 acpi_ipc_irq_index; 66 const char *platform; 67 u32 codec_mask; 68 u32 dmic_num; 69 }; 70 71 /** 72 * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are 73 * related to the hardware, except for the firmware and topology file names. 74 * A platform supported by legacy and Sound Open Firmware (SOF) would expose 75 * all firmware/topology related fields. 76 * 77 * @id: ACPI ID (usually the codec's) used to find a matching machine driver. 78 * @drv_name: machine driver name 79 * @fw_filename: firmware file name. Used when SOF is not enabled. 80 * @board: board name 81 * @machine_quirk: pointer to quirk, usually based on DMI information when 82 * ACPI ID alone is not sufficient, wrong or misleading 83 * @quirk_data: data used to uniquely identify a machine, usually a list of 84 * audio codecs whose presence if checked with ACPI 85 * @pdata: intended for platform data or machine specific-ops. This structure 86 * is not constant since this field may be updated at run-time 87 * @sof_fw_filename: Sound Open Firmware file name, if enabled 88 * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled 89 */ 90 /* Descriptor for SST ASoC machine driver */ 91 struct snd_soc_acpi_mach { 92 const u8 id[ACPI_ID_LEN]; 93 const char *drv_name; 94 const char *fw_filename; 95 const char *board; 96 struct snd_soc_acpi_mach * (*machine_quirk)(void *arg); 97 const void *quirk_data; 98 void *pdata; 99 struct snd_soc_acpi_mach_params mach_params; 100 const char *sof_fw_filename; 101 const char *sof_tplg_filename; 102 }; 103 104 #define SND_SOC_ACPI_MAX_CODECS 3 105 106 /** 107 * struct snd_soc_acpi_codecs: Structure to hold secondary codec information 108 * apart from the matched one, this data will be passed to the quirk function 109 * to match with the ACPI detected devices 110 * 111 * @num_codecs: number of secondary codecs used in the platform 112 * @codecs: holds the codec IDs 113 * 114 */ 115 struct snd_soc_acpi_codecs { 116 int num_codecs; 117 u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; 118 }; 119 120 #endif 121