1 /* 2 * Copyright (C) 2013-15, Intel Corporation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License version 6 * 2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 */ 14 15 #include <linux/stddef.h> 16 #include <linux/acpi.h> 17 18 struct sst_acpi_package_context { 19 char *name; /* package name */ 20 int length; /* number of elements */ 21 struct acpi_buffer *format; 22 struct acpi_buffer *state; 23 bool data_valid; 24 }; 25 26 #if IS_ENABLED(CONFIG_ACPI) 27 /* translation fron HID to I2C name, needed for DAI codec_name */ 28 const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]); 29 bool sst_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 30 struct sst_acpi_package_context *ctx); 31 #else sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN])32static inline const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]) 33 { 34 return NULL; 35 } sst_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],struct sst_acpi_package_context * ctx)36static inline bool sst_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 37 struct sst_acpi_package_context *ctx) 38 { 39 return false; 40 } 41 #endif 42 43 /* acpi match */ 44 struct sst_acpi_mach *sst_acpi_find_machine(struct sst_acpi_mach *machines); 45 46 /* acpi check hid */ 47 bool sst_acpi_check_hid(const u8 hid[ACPI_ID_LEN]); 48 49 /* Descriptor for SST ASoC machine driver */ 50 struct sst_acpi_mach { 51 /* ACPI ID for the matching machine driver. Audio codec for instance */ 52 const u8 id[ACPI_ID_LEN]; 53 /* machine driver name */ 54 const char *drv_name; 55 /* firmware file name */ 56 const char *fw_filename; 57 58 /* board name */ 59 const char *board; 60 struct sst_acpi_mach * (*machine_quirk)(void *arg); 61 const void *quirk_data; 62 void *pdata; 63 }; 64 65 #define SST_ACPI_MAX_CODECS 3 66 67 /** 68 * struct sst_codecs: Structure to hold secondary codec information apart from 69 * the matched one, this data will be passed to the quirk function to match 70 * with the ACPI detected devices 71 * 72 * @num_codecs: number of secondary codecs used in the platform 73 * @codecs: holds the codec IDs 74 * 75 */ 76 struct sst_codecs { 77 int num_codecs; 78 u8 codecs[SST_ACPI_MAX_CODECS][ACPI_ID_LEN]; 79 }; 80 81 /* check all codecs */ 82 struct sst_acpi_mach *sst_acpi_codec_list(void *arg); 83