1 /* SPDX-License-Identifier: GPL-2.0-only 2 * 3 * Copyright (C) 2013-15, Intel Corporation 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 #include <linux/soundwire/sdw.h> 13 14 struct snd_soc_acpi_package_context { 15 char *name; /* package name */ 16 int length; /* number of elements */ 17 struct acpi_buffer *format; 18 struct acpi_buffer *state; 19 bool data_valid; 20 }; 21 22 /* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */ 23 #define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1) 24 25 #if IS_ENABLED(CONFIG_ACPI) 26 /* acpi match */ 27 struct snd_soc_acpi_mach * 28 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines); 29 30 bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 31 struct snd_soc_acpi_package_context *ctx); 32 33 /* check all codecs */ 34 struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg); 35 36 #else 37 /* acpi match */ 38 static inline struct snd_soc_acpi_mach * 39 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines) 40 { 41 return NULL; 42 } 43 44 static inline bool 45 snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], 46 struct snd_soc_acpi_package_context *ctx) 47 { 48 return false; 49 } 50 51 /* check all codecs */ 52 static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg) 53 { 54 return NULL; 55 } 56 #endif 57 58 /** 59 * snd_soc_acpi_mach_params: interface for machine driver configuration 60 * 61 * @acpi_ipc_irq_index: used for BYT-CR detection 62 * @platform: string used for HDAudio codec support 63 * @codec_mask: used for HDAudio support 64 * @dmic_num: number of SoC- or chipset-attached PDM digital microphones 65 * @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver 66 * @link_mask: SoundWire links enabled on the board 67 * @links: array of SoundWire link _ADR descriptors, null terminated 68 * @i2s_link_mask: I2S/TDM links enabled on the board 69 * @num_dai_drivers: number of elements in @dai_drivers 70 * @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode 71 * @subsystem_vendor: optional PCI SSID vendor value 72 * @subsystem_device: optional PCI SSID device value 73 * @subsystem_id_set: true if a value has been written to 74 * subsystem_vendor and subsystem_device. 75 */ 76 struct snd_soc_acpi_mach_params { 77 u32 acpi_ipc_irq_index; 78 const char *platform; 79 u32 codec_mask; 80 u32 dmic_num; 81 bool common_hdmi_codec_drv; 82 u32 link_mask; 83 const struct snd_soc_acpi_link_adr *links; 84 u32 i2s_link_mask; 85 u32 num_dai_drivers; 86 struct snd_soc_dai_driver *dai_drivers; 87 unsigned short subsystem_vendor; 88 unsigned short subsystem_device; 89 bool subsystem_id_set; 90 }; 91 92 /** 93 * snd_soc_acpi_endpoint - endpoint descriptor 94 * @num: endpoint number (mandatory, unique per device) 95 * @aggregated: 0 (independent) or 1 (logically grouped) 96 * @group_position: zero-based order (only when @aggregated is 1) 97 * @group_id: platform-unique group identifier (only when @aggregrated is 1) 98 */ 99 struct snd_soc_acpi_endpoint { 100 u8 num; 101 u8 aggregated; 102 u8 group_position; 103 u8 group_id; 104 }; 105 106 /** 107 * snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device 108 * @adr: 64 bit ACPI _ADR value 109 * @num_endpoints: number of endpoints for this device 110 * @endpoints: array of endpoints 111 * @name_prefix: string used for codec controls 112 */ 113 struct snd_soc_acpi_adr_device { 114 const u64 adr; 115 const u8 num_endpoints; 116 const struct snd_soc_acpi_endpoint *endpoints; 117 const char *name_prefix; 118 }; 119 120 /** 121 * snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices 122 * @mask: one bit set indicates the link this list applies to 123 * @num_adr: ARRAY_SIZE of devices 124 * @adr_d: array of devices 125 * 126 * The number of devices per link can be more than 1, e.g. in SoundWire 127 * multi-drop configurations. 128 */ 129 130 struct snd_soc_acpi_link_adr { 131 const u32 mask; 132 const u32 num_adr; 133 const struct snd_soc_acpi_adr_device *adr_d; 134 }; 135 136 /* 137 * when set the topology uses the -ssp<N> suffix, where N is determined based on 138 * BIOS or DMI information 139 */ 140 #define SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER BIT(0) 141 142 /* 143 * when more than one SSP is reported in the link mask, use the most significant. 144 * This choice was found to be valid on platforms with ES8336 codecs. 145 */ 146 #define SND_SOC_ACPI_TPLG_INTEL_SSP_MSB BIT(1) 147 148 /* 149 * when set the topology uses the -dmic<N>ch suffix, where N is determined based on 150 * BIOS or DMI information 151 */ 152 #define SND_SOC_ACPI_TPLG_INTEL_DMIC_NUMBER BIT(2) 153 154 /* 155 * when set the speaker amplifier name suffix (i.e. "-max98360a") will be 156 * appended to topology file name 157 */ 158 #define SND_SOC_ACPI_TPLG_INTEL_AMP_NAME BIT(3) 159 160 /* 161 * when set the headphone codec name suffix (i.e. "-rt5682") will be appended to 162 * topology file name 163 */ 164 #define SND_SOC_ACPI_TPLG_INTEL_CODEC_NAME BIT(4) 165 166 /** 167 * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are 168 * related to the hardware, except for the firmware and topology file names. 169 * A platform supported by legacy and Sound Open Firmware (SOF) would expose 170 * all firmware/topology related fields. 171 * 172 * @id: ACPI ID (usually the codec's) used to find a matching machine driver. 173 * @uid: ACPI Unique ID, can be used to disambiguate matches. 174 * @comp_ids: list of compatible audio codecs using the same machine driver, 175 * firmware and topology 176 * @link_mask: describes required board layout, e.g. for SoundWire. 177 * @links: array of link _ADR descriptors, null terminated. 178 * @drv_name: machine driver name 179 * @fw_filename: firmware file name. Used when SOF is not enabled. 180 * @tplg_filename: topology file name. Used when SOF is not enabled. 181 * @board: board name 182 * @machine_quirk: pointer to quirk, usually based on DMI information when 183 * ACPI ID alone is not sufficient, wrong or misleading 184 * @quirk_data: data used to uniquely identify a machine, usually a list of 185 * audio codecs whose presence if checked with ACPI 186 * @pdata: intended for platform data or machine specific-ops. This structure 187 * is not constant since this field may be updated at run-time 188 * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled 189 * @tplg_quirk_mask: quirks to select different topology files dynamically 190 */ 191 /* Descriptor for SST ASoC machine driver */ 192 struct snd_soc_acpi_mach { 193 u8 id[ACPI_ID_LEN]; 194 const char *uid; 195 const struct snd_soc_acpi_codecs *comp_ids; 196 const u32 link_mask; 197 const struct snd_soc_acpi_link_adr *links; 198 const char *drv_name; 199 const char *fw_filename; 200 const char *tplg_filename; 201 const char *board; 202 struct snd_soc_acpi_mach * (*machine_quirk)(void *arg); 203 const void *quirk_data; 204 void *pdata; 205 struct snd_soc_acpi_mach_params mach_params; 206 const char *sof_tplg_filename; 207 const u32 tplg_quirk_mask; 208 }; 209 210 #define SND_SOC_ACPI_MAX_CODECS 3 211 212 /** 213 * struct snd_soc_acpi_codecs: Structure to hold secondary codec information 214 * apart from the matched one, this data will be passed to the quirk function 215 * to match with the ACPI detected devices 216 * 217 * @num_codecs: number of secondary codecs used in the platform 218 * @codecs: holds the codec IDs 219 * 220 */ 221 struct snd_soc_acpi_codecs { 222 int num_codecs; 223 u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; 224 }; 225 226 static inline bool snd_soc_acpi_sof_parent(struct device *dev) 227 { 228 return dev->parent && dev->parent->driver && dev->parent->driver->name && 229 !strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi")); 230 } 231 232 bool snd_soc_acpi_sdw_link_slaves_found(struct device *dev, 233 const struct snd_soc_acpi_link_adr *link, 234 struct sdw_extended_slave_id *ids, 235 int num_slaves); 236 237 #endif 238