1 /* SPDX-License-Identifier: GPL-2.0-only 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 * @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver 64 * @link_mask: links enabled on the board 65 * @links: array of link _ADR descriptors, null terminated 66 * @num_dai_drivers: number of elements in @dai_drivers 67 * @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode 68 */ 69 struct snd_soc_acpi_mach_params { 70 u32 acpi_ipc_irq_index; 71 const char *platform; 72 u32 codec_mask; 73 u32 dmic_num; 74 bool common_hdmi_codec_drv; 75 u32 link_mask; 76 const struct snd_soc_acpi_link_adr *links; 77 u32 num_dai_drivers; 78 struct snd_soc_dai_driver *dai_drivers; 79 }; 80 81 /** 82 * snd_soc_acpi_endpoint - endpoint descriptor 83 * @num: endpoint number (mandatory, unique per device) 84 * @aggregated: 0 (independent) or 1 (logically grouped) 85 * @group_position: zero-based order (only when @aggregated is 1) 86 * @group_id: platform-unique group identifier (only when @aggregrated is 1) 87 */ 88 struct snd_soc_acpi_endpoint { 89 u8 num; 90 u8 aggregated; 91 u8 group_position; 92 u8 group_id; 93 }; 94 95 /** 96 * snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device 97 * @adr: 64 bit ACPI _ADR value 98 * @num_endpoints: number of endpoints for this device 99 * @endpoints: array of endpoints 100 * @name_prefix: string used for codec controls 101 */ 102 struct snd_soc_acpi_adr_device { 103 const u64 adr; 104 const u8 num_endpoints; 105 const struct snd_soc_acpi_endpoint *endpoints; 106 const char *name_prefix; 107 }; 108 109 /** 110 * snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices 111 * @mask: one bit set indicates the link this list applies to 112 * @num_adr: ARRAY_SIZE of devices 113 * @adr_d: array of devices 114 * 115 * The number of devices per link can be more than 1, e.g. in SoundWire 116 * multi-drop configurations. 117 */ 118 119 struct snd_soc_acpi_link_adr { 120 const u32 mask; 121 const u32 num_adr; 122 const struct snd_soc_acpi_adr_device *adr_d; 123 }; 124 125 /** 126 * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are 127 * related to the hardware, except for the firmware and topology file names. 128 * A platform supported by legacy and Sound Open Firmware (SOF) would expose 129 * all firmware/topology related fields. 130 * 131 * @id: ACPI ID (usually the codec's) used to find a matching machine driver. 132 * @link_mask: describes required board layout, e.g. for SoundWire. 133 * @links: array of link _ADR descriptors, null terminated. 134 * @drv_name: machine driver name 135 * @fw_filename: firmware file name. Used when SOF is not enabled. 136 * @board: board name 137 * @machine_quirk: pointer to quirk, usually based on DMI information when 138 * ACPI ID alone is not sufficient, wrong or misleading 139 * @quirk_data: data used to uniquely identify a machine, usually a list of 140 * audio codecs whose presence if checked with ACPI 141 * @pdata: intended for platform data or machine specific-ops. This structure 142 * is not constant since this field may be updated at run-time 143 * @sof_fw_filename: Sound Open Firmware file name, if enabled 144 * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled 145 */ 146 /* Descriptor for SST ASoC machine driver */ 147 struct snd_soc_acpi_mach { 148 const u8 id[ACPI_ID_LEN]; 149 const u32 link_mask; 150 const struct snd_soc_acpi_link_adr *links; 151 const char *drv_name; 152 const char *fw_filename; 153 const char *board; 154 struct snd_soc_acpi_mach * (*machine_quirk)(void *arg); 155 const void *quirk_data; 156 void *pdata; 157 struct snd_soc_acpi_mach_params mach_params; 158 const char *sof_fw_filename; 159 const char *sof_tplg_filename; 160 }; 161 162 #define SND_SOC_ACPI_MAX_CODECS 3 163 164 /** 165 * struct snd_soc_acpi_codecs: Structure to hold secondary codec information 166 * apart from the matched one, this data will be passed to the quirk function 167 * to match with the ACPI detected devices 168 * 169 * @num_codecs: number of secondary codecs used in the platform 170 * @codecs: holds the codec IDs 171 * 172 */ 173 struct snd_soc_acpi_codecs { 174 int num_codecs; 175 u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; 176 }; 177 178 static inline bool snd_soc_acpi_sof_parent(struct device *dev) 179 { 180 return dev->parent && dev->parent->driver && dev->parent->driver->name && 181 !strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi")); 182 } 183 184 #endif 185