1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2e3d280fcSTakashi Iwai /* 3e3d280fcSTakashi Iwai * HD-audio core stuff 4e3d280fcSTakashi Iwai */ 5e3d280fcSTakashi Iwai 6e3d280fcSTakashi Iwai #ifndef __SOUND_HDAUDIO_H 7e3d280fcSTakashi Iwai #define __SOUND_HDAUDIO_H 8e3d280fcSTakashi Iwai 9e3d280fcSTakashi Iwai #include <linux/device.h> 1014752412STakashi Iwai #include <linux/interrupt.h> 114d024fe8STakashi Iwai #include <linux/io.h> 12c19bd02eSCezary Rojewski #include <linux/io-64-nonatomic-lo-hi.h> 133cab69d9SAmadeusz Sławiński #include <linux/iopoll.h> 14feb20faeSTakashi Iwai #include <linux/pm_runtime.h> 1514752412STakashi Iwai #include <linux/timecounter.h> 1614752412STakashi Iwai #include <sound/core.h> 17a6ea5fe9STakashi Iwai #include <sound/pcm.h> 1814752412STakashi Iwai #include <sound/memalloc.h> 19d068ebc2STakashi Iwai #include <sound/hda_verbs.h> 2098d8fc6cSMengdong Lin #include <drm/i915_component.h> 21d068ebc2STakashi Iwai 227639a06cSTakashi Iwai /* codec node id */ 237639a06cSTakashi Iwai typedef u16 hda_nid_t; 247639a06cSTakashi Iwai 25d068ebc2STakashi Iwai struct hdac_bus; 2614752412STakashi Iwai struct hdac_stream; 27d068ebc2STakashi Iwai struct hdac_device; 28d068ebc2STakashi Iwai struct hdac_driver; 293256be65STakashi Iwai struct hdac_widget_tree; 30da23ac1eSSubhransu S. Prusty struct hda_device_id; 31e3d280fcSTakashi Iwai 32e3d280fcSTakashi Iwai /* 33e3d280fcSTakashi Iwai * exported bus type 34e3d280fcSTakashi Iwai */ 35e3d280fcSTakashi Iwai extern struct bus_type snd_hda_bus_type; 36e3d280fcSTakashi Iwai 37e3d280fcSTakashi Iwai /* 3871fc4c7eSTakashi Iwai * generic arrays 3971fc4c7eSTakashi Iwai */ 4071fc4c7eSTakashi Iwai struct snd_array { 4171fc4c7eSTakashi Iwai unsigned int used; 4271fc4c7eSTakashi Iwai unsigned int alloced; 4371fc4c7eSTakashi Iwai unsigned int elem_size; 4471fc4c7eSTakashi Iwai unsigned int alloc_align; 4571fc4c7eSTakashi Iwai void *list; 4671fc4c7eSTakashi Iwai }; 4771fc4c7eSTakashi Iwai 4871fc4c7eSTakashi Iwai /* 49e3d280fcSTakashi Iwai * HD-audio codec base device 50e3d280fcSTakashi Iwai */ 51e3d280fcSTakashi Iwai struct hdac_device { 52e3d280fcSTakashi Iwai struct device dev; 53e3d280fcSTakashi Iwai int type; 54d068ebc2STakashi Iwai struct hdac_bus *bus; 55d068ebc2STakashi Iwai unsigned int addr; /* codec address */ 56d068ebc2STakashi Iwai struct list_head list; /* list point for bus codec_list */ 577639a06cSTakashi Iwai 587639a06cSTakashi Iwai hda_nid_t afg; /* AFG node id */ 597639a06cSTakashi Iwai hda_nid_t mfg; /* MFG node id */ 607639a06cSTakashi Iwai 617639a06cSTakashi Iwai /* ids */ 627639a06cSTakashi Iwai unsigned int vendor_id; 637639a06cSTakashi Iwai unsigned int subsystem_id; 647639a06cSTakashi Iwai unsigned int revision_id; 657639a06cSTakashi Iwai unsigned int afg_function_id; 667639a06cSTakashi Iwai unsigned int mfg_function_id; 677639a06cSTakashi Iwai unsigned int afg_unsol:1; 687639a06cSTakashi Iwai unsigned int mfg_unsol:1; 697639a06cSTakashi Iwai 707639a06cSTakashi Iwai unsigned int power_caps; /* FG power caps */ 717639a06cSTakashi Iwai 727639a06cSTakashi Iwai const char *vendor_name; /* codec vendor name */ 737639a06cSTakashi Iwai const char *chip_name; /* codec chip name */ 747639a06cSTakashi Iwai 7505852448STakashi Iwai /* verb exec op override */ 7605852448STakashi Iwai int (*exec_verb)(struct hdac_device *dev, unsigned int cmd, 7705852448STakashi Iwai unsigned int flags, unsigned int *res); 7805852448STakashi Iwai 797639a06cSTakashi Iwai /* widgets */ 807639a06cSTakashi Iwai unsigned int num_nodes; 817639a06cSTakashi Iwai hda_nid_t start_nid, end_nid; 827639a06cSTakashi Iwai 837639a06cSTakashi Iwai /* misc flags */ 847639a06cSTakashi Iwai atomic_t in_pm; /* suspend/resume being performed */ 853256be65STakashi Iwai 863256be65STakashi Iwai /* sysfs */ 87ed180abbSAmadeusz Sławiński struct mutex widget_lock; 883256be65STakashi Iwai struct hdac_widget_tree *widgets; 894d75faa0STakashi Iwai 904d75faa0STakashi Iwai /* regmap */ 914d75faa0STakashi Iwai struct regmap *regmap; 921a462be5STakashi Iwai struct mutex regmap_lock; 935e56bceaSTakashi Iwai struct snd_array vendor_verbs; 944d75faa0STakashi Iwai bool lazy_cache:1; /* don't wake up for writes */ 95faa75f8aSTakashi Iwai bool caps_overwriting:1; /* caps overwrite being in process */ 9640ba66a7STakashi Iwai bool cache_coef:1; /* cache COEF read/write too */ 97e7255c00SCezary Rojewski unsigned int registered:1; /* codec was registered */ 98e3d280fcSTakashi Iwai }; 99e3d280fcSTakashi Iwai 100e3d280fcSTakashi Iwai /* device/driver type used for matching */ 101e3d280fcSTakashi Iwai enum { 102e3d280fcSTakashi Iwai HDA_DEV_CORE, 103e3d280fcSTakashi Iwai HDA_DEV_LEGACY, 104c1cc18b1SRamesh Babu HDA_DEV_ASOC, 105e3d280fcSTakashi Iwai }; 106e3d280fcSTakashi Iwai 107d82b51c8SPierre-Louis Bossart enum { 108d82b51c8SPierre-Louis Bossart SND_SKL_PCI_BIND_AUTO, /* automatic selection based on pci class */ 109d82b51c8SPierre-Louis Bossart SND_SKL_PCI_BIND_LEGACY,/* bind only with legacy driver */ 110d82b51c8SPierre-Louis Bossart SND_SKL_PCI_BIND_ASOC /* bind only with ASoC driver */ 111d82b51c8SPierre-Louis Bossart }; 112d82b51c8SPierre-Louis Bossart 1137639a06cSTakashi Iwai /* direction */ 1147639a06cSTakashi Iwai enum { 1157639a06cSTakashi Iwai HDA_INPUT, HDA_OUTPUT 1167639a06cSTakashi Iwai }; 1177639a06cSTakashi Iwai 118e3d280fcSTakashi Iwai #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev) 119e3d280fcSTakashi Iwai 1207639a06cSTakashi Iwai int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus, 1217639a06cSTakashi Iwai const char *name, unsigned int addr); 1227639a06cSTakashi Iwai void snd_hdac_device_exit(struct hdac_device *dev); 1233256be65STakashi Iwai int snd_hdac_device_register(struct hdac_device *codec); 1243256be65STakashi Iwai void snd_hdac_device_unregister(struct hdac_device *codec); 125ded255beSTakashi Iwai int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name); 1264f9e0c38STakashi Iwai int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size); 1277639a06cSTakashi Iwai 128774a075aSTakashi Iwai int snd_hdac_refresh_widgets(struct hdac_device *codec); 1297639a06cSTakashi Iwai 1307639a06cSTakashi Iwai int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid, 1317639a06cSTakashi Iwai unsigned int verb, unsigned int parm, unsigned int *res); 13201ed3c06STakashi Iwai int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm, 13301ed3c06STakashi Iwai unsigned int *res); 1349ba17b4dSTakashi Iwai int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid, 1359ba17b4dSTakashi Iwai int parm); 136faa75f8aSTakashi Iwai int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid, 137faa75f8aSTakashi Iwai unsigned int parm, unsigned int val); 1387639a06cSTakashi Iwai int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid, 1397639a06cSTakashi Iwai hda_nid_t *conn_list, int max_conns); 1407639a06cSTakashi Iwai int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid, 1417639a06cSTakashi Iwai hda_nid_t *start_id); 142b7d023e1STakashi Iwai unsigned int snd_hdac_calc_stream_format(unsigned int rate, 143b7d023e1STakashi Iwai unsigned int channels, 144a6ea5fe9STakashi Iwai snd_pcm_format_t format, 145b7d023e1STakashi Iwai unsigned int maxbps, 146b7d023e1STakashi Iwai unsigned short spdif_ctls); 147b7d023e1STakashi Iwai int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid, 148b7d023e1STakashi Iwai u32 *ratesp, u64 *formatsp, unsigned int *bpsp); 149b7d023e1STakashi Iwai bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid, 150b7d023e1STakashi Iwai unsigned int format); 1517639a06cSTakashi Iwai 1521b5e6167SSubhransu S. Prusty int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid, 1531b5e6167SSubhransu S. Prusty int flags, unsigned int verb, unsigned int parm); 1541b5e6167SSubhransu S. Prusty int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid, 1551b5e6167SSubhransu S. Prusty int flags, unsigned int verb, unsigned int parm); 1561b5e6167SSubhransu S. Prusty bool snd_hdac_check_power_state(struct hdac_device *hdac, 1571b5e6167SSubhransu S. Prusty hda_nid_t nid, unsigned int target_state); 15809787492SAbhijeet Kumar unsigned int snd_hdac_sync_power_state(struct hdac_device *hdac, 15909787492SAbhijeet Kumar hda_nid_t nid, unsigned int target_state); 16001ed3c06STakashi Iwai /** 16101ed3c06STakashi Iwai * snd_hdac_read_parm - read a codec parameter 16201ed3c06STakashi Iwai * @codec: the codec object 16301ed3c06STakashi Iwai * @nid: NID to read a parameter 16401ed3c06STakashi Iwai * @parm: parameter to read 16501ed3c06STakashi Iwai * 16601ed3c06STakashi Iwai * Returns -1 for error. If you need to distinguish the error more 16701ed3c06STakashi Iwai * strictly, use _snd_hdac_read_parm() directly. 16801ed3c06STakashi Iwai */ 16901ed3c06STakashi Iwai static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, 17001ed3c06STakashi Iwai int parm) 17101ed3c06STakashi Iwai { 17201ed3c06STakashi Iwai unsigned int val; 17301ed3c06STakashi Iwai 17401ed3c06STakashi Iwai return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val; 17501ed3c06STakashi Iwai } 17601ed3c06STakashi Iwai 1777639a06cSTakashi Iwai #ifdef CONFIG_PM 178fbce23a0STakashi Iwai int snd_hdac_power_up(struct hdac_device *codec); 179fbce23a0STakashi Iwai int snd_hdac_power_down(struct hdac_device *codec); 180fbce23a0STakashi Iwai int snd_hdac_power_up_pm(struct hdac_device *codec); 181fbce23a0STakashi Iwai int snd_hdac_power_down_pm(struct hdac_device *codec); 182fc4f000bSTakashi Iwai int snd_hdac_keep_power_up(struct hdac_device *codec); 183feb20faeSTakashi Iwai 184feb20faeSTakashi Iwai /* call this at entering into suspend/resume callbacks in codec driver */ 185feb20faeSTakashi Iwai static inline void snd_hdac_enter_pm(struct hdac_device *codec) 186feb20faeSTakashi Iwai { 187feb20faeSTakashi Iwai atomic_inc(&codec->in_pm); 188feb20faeSTakashi Iwai } 189feb20faeSTakashi Iwai 190feb20faeSTakashi Iwai /* call this at leaving from suspend/resume callbacks in codec driver */ 191feb20faeSTakashi Iwai static inline void snd_hdac_leave_pm(struct hdac_device *codec) 192feb20faeSTakashi Iwai { 193feb20faeSTakashi Iwai atomic_dec(&codec->in_pm); 194feb20faeSTakashi Iwai } 195feb20faeSTakashi Iwai 196feb20faeSTakashi Iwai static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) 197feb20faeSTakashi Iwai { 198feb20faeSTakashi Iwai return atomic_read(&codec->in_pm); 199feb20faeSTakashi Iwai } 200feb20faeSTakashi Iwai 201feb20faeSTakashi Iwai static inline bool snd_hdac_is_power_on(struct hdac_device *codec) 202feb20faeSTakashi Iwai { 203feb20faeSTakashi Iwai return !pm_runtime_suspended(&codec->dev); 204feb20faeSTakashi Iwai } 2057639a06cSTakashi Iwai #else 206fbce23a0STakashi Iwai static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; } 207fbce23a0STakashi Iwai static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; } 208fbce23a0STakashi Iwai static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; } 209fbce23a0STakashi Iwai static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; } 210fc4f000bSTakashi Iwai static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; } 211feb20faeSTakashi Iwai static inline void snd_hdac_enter_pm(struct hdac_device *codec) {} 212feb20faeSTakashi Iwai static inline void snd_hdac_leave_pm(struct hdac_device *codec) {} 21379263c3bSJason Yan static inline bool snd_hdac_is_in_pm(struct hdac_device *codec) { return false; } 21479263c3bSJason Yan static inline bool snd_hdac_is_power_on(struct hdac_device *codec) { return true; } 2157639a06cSTakashi Iwai #endif 2167639a06cSTakashi Iwai 217e3d280fcSTakashi Iwai /* 218e3d280fcSTakashi Iwai * HD-audio codec base driver 219e3d280fcSTakashi Iwai */ 220e3d280fcSTakashi Iwai struct hdac_driver { 221e3d280fcSTakashi Iwai struct device_driver driver; 222e3d280fcSTakashi Iwai int type; 223ec71efc9SVinod Koul const struct hda_device_id *id_table; 224e3d280fcSTakashi Iwai int (*match)(struct hdac_device *dev, struct hdac_driver *drv); 225d068ebc2STakashi Iwai void (*unsol_event)(struct hdac_device *dev, unsigned int event); 226e1df9317SRakesh Ughreja 227e1df9317SRakesh Ughreja /* fields used by ext bus APIs */ 228e1df9317SRakesh Ughreja int (*probe)(struct hdac_device *dev); 229e1df9317SRakesh Ughreja int (*remove)(struct hdac_device *dev); 230e1df9317SRakesh Ughreja void (*shutdown)(struct hdac_device *dev); 231e3d280fcSTakashi Iwai }; 232e3d280fcSTakashi Iwai 233e3d280fcSTakashi Iwai #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver) 234e3d280fcSTakashi Iwai 235ec71efc9SVinod Koul const struct hda_device_id * 236ec71efc9SVinod Koul hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv); 237ec71efc9SVinod Koul 238d068ebc2STakashi Iwai /* 23914752412STakashi Iwai * Bus verb operators 240d068ebc2STakashi Iwai */ 241d068ebc2STakashi Iwai struct hdac_bus_ops { 242d068ebc2STakashi Iwai /* send a single command */ 243d068ebc2STakashi Iwai int (*command)(struct hdac_bus *bus, unsigned int cmd); 244d068ebc2STakashi Iwai /* get a response from the last command */ 245d068ebc2STakashi Iwai int (*get_response)(struct hdac_bus *bus, unsigned int addr, 246d068ebc2STakashi Iwai unsigned int *res); 247f9e5fd1bSKai Vehmanen /* notify of codec link power-up/down */ 248f9e5fd1bSKai Vehmanen void (*link_power)(struct hdac_device *hdev, bool enable); 249d068ebc2STakashi Iwai }; 250d068ebc2STakashi Iwai 25114752412STakashi Iwai /* 252cb04ba33SRakesh Ughreja * ops used for ASoC HDA codec drivers 253cb04ba33SRakesh Ughreja */ 254cb04ba33SRakesh Ughreja struct hdac_ext_bus_ops { 255cb04ba33SRakesh Ughreja int (*hdev_attach)(struct hdac_device *hdev); 256cb04ba33SRakesh Ughreja int (*hdev_detach)(struct hdac_device *hdev); 257cb04ba33SRakesh Ughreja }; 258cb04ba33SRakesh Ughreja 25914752412STakashi Iwai #define HDA_UNSOL_QUEUE_SIZE 64 26014752412STakashi Iwai #define HDA_MAX_CODECS 8 /* limit by controller side */ 26114752412STakashi Iwai 26214752412STakashi Iwai /* 26314752412STakashi Iwai * CORB/RIRB 26414752412STakashi Iwai * 26514752412STakashi Iwai * Each CORB entry is 4byte, RIRB is 8byte 26614752412STakashi Iwai */ 26714752412STakashi Iwai struct hdac_rb { 26814752412STakashi Iwai __le32 *buf; /* virtual address of CORB/RIRB buffer */ 26914752412STakashi Iwai dma_addr_t addr; /* physical address of CORB/RIRB buffer */ 27014752412STakashi Iwai unsigned short rp, wp; /* RIRB read/write pointers */ 27114752412STakashi Iwai int cmds[HDA_MAX_CODECS]; /* number of pending requests */ 27214752412STakashi Iwai u32 res[HDA_MAX_CODECS]; /* last read value */ 27314752412STakashi Iwai }; 27414752412STakashi Iwai 27514752412STakashi Iwai /* 27614752412STakashi Iwai * HD-audio bus base driver 2776720b384SVinod Koul * 2786720b384SVinod Koul * @ppcap: pp capabilities pointer 2796720b384SVinod Koul * @spbcap: SPIB capabilities pointer 2806720b384SVinod Koul * @mlcap: MultiLink capabilities pointer 2816720b384SVinod Koul * @gtscap: gts capabilities pointer 2826720b384SVinod Koul * @drsmcap: dma resume capabilities pointer 28376f56faeSRakesh Ughreja * @num_streams: streams supported 28476f56faeSRakesh Ughreja * @idx: HDA link index 28576f56faeSRakesh Ughreja * @hlink_list: link list of HDA links 286e61ab9f0STakashi Iwai * @lock: lock for link and display power mgmt 28776f56faeSRakesh Ughreja * @cmd_dma_state: state of cmd DMAs: CORB and RIRB 28814752412STakashi Iwai */ 289d068ebc2STakashi Iwai struct hdac_bus { 290d068ebc2STakashi Iwai struct device *dev; 291d068ebc2STakashi Iwai const struct hdac_bus_ops *ops; 292cb04ba33SRakesh Ughreja const struct hdac_ext_bus_ops *ext_ops; 29314752412STakashi Iwai 29414752412STakashi Iwai /* h/w resources */ 29514752412STakashi Iwai unsigned long addr; 29614752412STakashi Iwai void __iomem *remap_addr; 29714752412STakashi Iwai int irq; 298d068ebc2STakashi Iwai 2996720b384SVinod Koul void __iomem *ppcap; 3006720b384SVinod Koul void __iomem *spbcap; 3016720b384SVinod Koul void __iomem *mlcap; 3026720b384SVinod Koul void __iomem *gtscap; 3036720b384SVinod Koul void __iomem *drsmcap; 3046720b384SVinod Koul 305d068ebc2STakashi Iwai /* codec linked list */ 306d068ebc2STakashi Iwai struct list_head codec_list; 307d068ebc2STakashi Iwai unsigned int num_codecs; 308d068ebc2STakashi Iwai 309d068ebc2STakashi Iwai /* link caddr -> codec */ 310d068ebc2STakashi Iwai struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; 311d068ebc2STakashi Iwai 312d068ebc2STakashi Iwai /* unsolicited event queue */ 313d068ebc2STakashi Iwai u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */ 314d068ebc2STakashi Iwai unsigned int unsol_rp, unsol_wp; 315d068ebc2STakashi Iwai struct work_struct unsol_work; 316d068ebc2STakashi Iwai 31714752412STakashi Iwai /* bit flags of detected codecs */ 31814752412STakashi Iwai unsigned long codec_mask; 31914752412STakashi Iwai 320d068ebc2STakashi Iwai /* bit flags of powered codecs */ 321d068ebc2STakashi Iwai unsigned long codec_powered; 322d068ebc2STakashi Iwai 32314752412STakashi Iwai /* CORB/RIRB */ 32414752412STakashi Iwai struct hdac_rb corb; 32514752412STakashi Iwai struct hdac_rb rirb; 32614752412STakashi Iwai unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */ 32788452da9STakashi Iwai wait_queue_head_t rirb_wq; 32814752412STakashi Iwai 32914752412STakashi Iwai /* CORB/RIRB and position buffers */ 33014752412STakashi Iwai struct snd_dma_buffer rb; 33114752412STakashi Iwai struct snd_dma_buffer posbuf; 332619a1f19STakashi Iwai int dma_type; /* SNDRV_DMA_TYPE_XXX for CORB/RIRB */ 33314752412STakashi Iwai 33414752412STakashi Iwai /* hdac_stream linked list */ 33514752412STakashi Iwai struct list_head stream_list; 33614752412STakashi Iwai 33714752412STakashi Iwai /* operation state */ 33814752412STakashi Iwai bool chip_init:1; /* h/w initialized */ 33914752412STakashi Iwai 34014752412STakashi Iwai /* behavior flags */ 3414d024fe8STakashi Iwai bool aligned_mmio:1; /* aligned MMIO access */ 342d068ebc2STakashi Iwai bool sync_write:1; /* sync after verb write */ 34314752412STakashi Iwai bool use_posbuf:1; /* use position buffer */ 34414752412STakashi Iwai bool snoop:1; /* enable snooping */ 34514752412STakashi Iwai bool align_bdle_4k:1; /* BDLE align 4K boundary */ 34614752412STakashi Iwai bool reverse_assign:1; /* assign devices in reverse order */ 34714752412STakashi Iwai bool corbrp_self_clear:1; /* CORBRP clears itself after reset */ 3488af42130SBard Liao bool polling_mode:1; 3495f2cb361STakashi Iwai bool needs_damn_long_delay:1; 3508af42130SBard Liao 3518af42130SBard Liao int poll_count; 35214752412STakashi Iwai 35314752412STakashi Iwai int bdl_pos_adj; /* BDL position adjustment */ 354d068ebc2STakashi Iwai 3554106820bSMohan Kumar /* delay time in us for dma stop */ 3564106820bSMohan Kumar unsigned int dma_stop_delay; 3574106820bSMohan Kumar 358d068ebc2STakashi Iwai /* locks */ 35914752412STakashi Iwai spinlock_t reg_lock; 360d068ebc2STakashi Iwai struct mutex cmd_mutex; 361e61ab9f0STakashi Iwai struct mutex lock; 36298d8fc6cSMengdong Lin 363ae891abeSTakashi Iwai /* DRM component interface */ 364ae891abeSTakashi Iwai struct drm_audio_component *audio_component; 365029d92c2STakashi Iwai long display_power_status; 366d31c85fcSChris Wilson unsigned long display_power_active; 36776f56faeSRakesh Ughreja 36876f56faeSRakesh Ughreja /* parameters required for enhanced capabilities */ 36976f56faeSRakesh Ughreja int num_streams; 37076f56faeSRakesh Ughreja int idx; 37176f56faeSRakesh Ughreja 372e61ab9f0STakashi Iwai /* link management */ 37376f56faeSRakesh Ughreja struct list_head hlink_list; 37476f56faeSRakesh Ughreja bool cmd_dma_state; 37567ae482aSSameer Pujar 37667ae482aSSameer Pujar /* factor used to derive STRIPE control value */ 37767ae482aSSameer Pujar unsigned int sdo_limit; 378d068ebc2STakashi Iwai }; 379d068ebc2STakashi Iwai 380d068ebc2STakashi Iwai int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, 38119abfefdSTakashi Iwai const struct hdac_bus_ops *ops); 382d068ebc2STakashi Iwai void snd_hdac_bus_exit(struct hdac_bus *bus); 383d068ebc2STakashi Iwai int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr, 384d068ebc2STakashi Iwai unsigned int cmd, unsigned int *res); 385d068ebc2STakashi Iwai 386f9e5fd1bSKai Vehmanen void snd_hdac_codec_link_up(struct hdac_device *codec); 387f9e5fd1bSKai Vehmanen void snd_hdac_codec_link_down(struct hdac_device *codec); 3887639a06cSTakashi Iwai 38914752412STakashi Iwai int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val); 39014752412STakashi Iwai int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr, 39114752412STakashi Iwai unsigned int *res); 3926720b384SVinod Koul int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus); 39314752412STakashi Iwai 39414752412STakashi Iwai bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset); 39514752412STakashi Iwai void snd_hdac_bus_stop_chip(struct hdac_bus *bus); 39614752412STakashi Iwai void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus); 39714752412STakashi Iwai void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus); 39814752412STakashi Iwai void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus); 39914752412STakashi Iwai void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus); 40075383f8dSYu Zhao int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset); 401f9e5fd1bSKai Vehmanen void snd_hdac_bus_link_power(struct hdac_device *hdev, bool enable); 40214752412STakashi Iwai 40314752412STakashi Iwai void snd_hdac_bus_update_rirb(struct hdac_bus *bus); 404473f4145STakashi Iwai int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status, 40514752412STakashi Iwai void (*ack)(struct hdac_bus *, 40614752412STakashi Iwai struct hdac_stream *)); 40714752412STakashi Iwai 408304dad30SJeeja KP int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus); 409304dad30SJeeja KP void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus); 410304dad30SJeeja KP 41119abfefdSTakashi Iwai #ifdef CONFIG_SND_HDA_ALIGNED_MMIO 41219abfefdSTakashi Iwai unsigned int snd_hdac_aligned_read(void __iomem *addr, unsigned int mask); 41319abfefdSTakashi Iwai void snd_hdac_aligned_write(unsigned int val, void __iomem *addr, 41419abfefdSTakashi Iwai unsigned int mask); 4154d024fe8STakashi Iwai #define snd_hdac_aligned_mmio(bus) (bus)->aligned_mmio 4164d024fe8STakashi Iwai #else 4174d024fe8STakashi Iwai #define snd_hdac_aligned_mmio(bus) false 4184d024fe8STakashi Iwai #define snd_hdac_aligned_read(addr, mask) 0 4194d024fe8STakashi Iwai #define snd_hdac_aligned_write(val, addr, mask) do {} while (0) 4204d024fe8STakashi Iwai #endif 4214d024fe8STakashi Iwai 4224d024fe8STakashi Iwai static inline void snd_hdac_reg_writeb(struct hdac_bus *bus, void __iomem *addr, 4234d024fe8STakashi Iwai u8 val) 4244d024fe8STakashi Iwai { 4254d024fe8STakashi Iwai if (snd_hdac_aligned_mmio(bus)) 4264d024fe8STakashi Iwai snd_hdac_aligned_write(val, addr, 0xff); 4274d024fe8STakashi Iwai else 4284d024fe8STakashi Iwai writeb(val, addr); 4294d024fe8STakashi Iwai } 4304d024fe8STakashi Iwai 4314d024fe8STakashi Iwai static inline void snd_hdac_reg_writew(struct hdac_bus *bus, void __iomem *addr, 4324d024fe8STakashi Iwai u16 val) 4334d024fe8STakashi Iwai { 4344d024fe8STakashi Iwai if (snd_hdac_aligned_mmio(bus)) 4354d024fe8STakashi Iwai snd_hdac_aligned_write(val, addr, 0xffff); 4364d024fe8STakashi Iwai else 4374d024fe8STakashi Iwai writew(val, addr); 4384d024fe8STakashi Iwai } 4394d024fe8STakashi Iwai 4404d024fe8STakashi Iwai static inline u8 snd_hdac_reg_readb(struct hdac_bus *bus, void __iomem *addr) 4414d024fe8STakashi Iwai { 4424d024fe8STakashi Iwai return snd_hdac_aligned_mmio(bus) ? 4434d024fe8STakashi Iwai snd_hdac_aligned_read(addr, 0xff) : readb(addr); 4444d024fe8STakashi Iwai } 4454d024fe8STakashi Iwai 4464d024fe8STakashi Iwai static inline u16 snd_hdac_reg_readw(struct hdac_bus *bus, void __iomem *addr) 4474d024fe8STakashi Iwai { 4484d024fe8STakashi Iwai return snd_hdac_aligned_mmio(bus) ? 4494d024fe8STakashi Iwai snd_hdac_aligned_read(addr, 0xffff) : readw(addr); 4504d024fe8STakashi Iwai } 4514d024fe8STakashi Iwai 4524d024fe8STakashi Iwai #define snd_hdac_reg_writel(bus, addr, val) writel(val, addr) 4534d024fe8STakashi Iwai #define snd_hdac_reg_readl(bus, addr) readl(addr) 454c19bd02eSCezary Rojewski #define snd_hdac_reg_writeq(bus, addr, val) writeq(val, addr) 455c19bd02eSCezary Rojewski #define snd_hdac_reg_readq(bus, addr) readq(addr) 45619abfefdSTakashi Iwai 45714752412STakashi Iwai /* 45814752412STakashi Iwai * macros for easy use 45914752412STakashi Iwai */ 4602c1f8138STakashi Iwai #define _snd_hdac_chip_writeb(chip, reg, value) \ 4614d024fe8STakashi Iwai snd_hdac_reg_writeb(chip, (chip)->remap_addr + (reg), value) 4622c1f8138STakashi Iwai #define _snd_hdac_chip_readb(chip, reg) \ 4634d024fe8STakashi Iwai snd_hdac_reg_readb(chip, (chip)->remap_addr + (reg)) 4642c1f8138STakashi Iwai #define _snd_hdac_chip_writew(chip, reg, value) \ 4654d024fe8STakashi Iwai snd_hdac_reg_writew(chip, (chip)->remap_addr + (reg), value) 4662c1f8138STakashi Iwai #define _snd_hdac_chip_readw(chip, reg) \ 4674d024fe8STakashi Iwai snd_hdac_reg_readw(chip, (chip)->remap_addr + (reg)) 4682c1f8138STakashi Iwai #define _snd_hdac_chip_writel(chip, reg, value) \ 4694d024fe8STakashi Iwai snd_hdac_reg_writel(chip, (chip)->remap_addr + (reg), value) 4702c1f8138STakashi Iwai #define _snd_hdac_chip_readl(chip, reg) \ 4714d024fe8STakashi Iwai snd_hdac_reg_readl(chip, (chip)->remap_addr + (reg)) 47214752412STakashi Iwai 47314752412STakashi Iwai /* read/write a register, pass without AZX_REG_ prefix */ 47414752412STakashi Iwai #define snd_hdac_chip_writel(chip, reg, value) \ 4752c1f8138STakashi Iwai _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value) 47614752412STakashi Iwai #define snd_hdac_chip_writew(chip, reg, value) \ 4772c1f8138STakashi Iwai _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value) 47814752412STakashi Iwai #define snd_hdac_chip_writeb(chip, reg, value) \ 4792c1f8138STakashi Iwai _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value) 48014752412STakashi Iwai #define snd_hdac_chip_readl(chip, reg) \ 4812c1f8138STakashi Iwai _snd_hdac_chip_readl(chip, AZX_REG_ ## reg) 48214752412STakashi Iwai #define snd_hdac_chip_readw(chip, reg) \ 4832c1f8138STakashi Iwai _snd_hdac_chip_readw(chip, AZX_REG_ ## reg) 48414752412STakashi Iwai #define snd_hdac_chip_readb(chip, reg) \ 4852c1f8138STakashi Iwai _snd_hdac_chip_readb(chip, AZX_REG_ ## reg) 48614752412STakashi Iwai 48714752412STakashi Iwai /* update a register, pass without AZX_REG_ prefix */ 48814752412STakashi Iwai #define snd_hdac_chip_updatel(chip, reg, mask, val) \ 48914752412STakashi Iwai snd_hdac_chip_writel(chip, reg, \ 49014752412STakashi Iwai (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val)) 49114752412STakashi Iwai #define snd_hdac_chip_updatew(chip, reg, mask, val) \ 49214752412STakashi Iwai snd_hdac_chip_writew(chip, reg, \ 49314752412STakashi Iwai (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val)) 49414752412STakashi Iwai #define snd_hdac_chip_updateb(chip, reg, mask, val) \ 49514752412STakashi Iwai snd_hdac_chip_writeb(chip, reg, \ 49614752412STakashi Iwai (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val)) 49714752412STakashi Iwai 49814752412STakashi Iwai /* 49914752412STakashi Iwai * HD-audio stream 50014752412STakashi Iwai */ 50114752412STakashi Iwai struct hdac_stream { 50214752412STakashi Iwai struct hdac_bus *bus; 50314752412STakashi Iwai struct snd_dma_buffer bdl; /* BDL buffer */ 50414752412STakashi Iwai __le32 *posbuf; /* position buffer pointer */ 50514752412STakashi Iwai int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */ 50614752412STakashi Iwai 50714752412STakashi Iwai unsigned int bufsize; /* size of the play buffer in bytes */ 50814752412STakashi Iwai unsigned int period_bytes; /* size of the period in bytes */ 50914752412STakashi Iwai unsigned int frags; /* number for period in the play buffer */ 51014752412STakashi Iwai unsigned int fifo_size; /* FIFO size */ 51114752412STakashi Iwai 51214752412STakashi Iwai void __iomem *sd_addr; /* stream descriptor pointer */ 51314752412STakashi Iwai 51414752412STakashi Iwai u32 sd_int_sta_mask; /* stream int status mask */ 51514752412STakashi Iwai 51614752412STakashi Iwai /* pcm support */ 51714752412STakashi Iwai struct snd_pcm_substream *substream; /* assigned substream, 51814752412STakashi Iwai * set in PCM open 51914752412STakashi Iwai */ 5204a9ce6e4SCezary Rojewski struct snd_compr_stream *cstream; 52114752412STakashi Iwai unsigned int format_val; /* format value to be set in the 52214752412STakashi Iwai * controller and the codec 52314752412STakashi Iwai */ 52414752412STakashi Iwai unsigned char stream_tag; /* assigned stream */ 52514752412STakashi Iwai unsigned char index; /* stream index */ 52614752412STakashi Iwai int assigned_key; /* last device# key assigned to */ 52714752412STakashi Iwai 52814752412STakashi Iwai bool opened:1; 52914752412STakashi Iwai bool running:1; 5306d23c8f5STakashi Iwai bool prepared:1; 53114752412STakashi Iwai bool no_period_wakeup:1; 5328f3f600bSTakashi Iwai bool locked:1; 533e38e486dSTakashi Iwai bool stripe:1; /* apply stripe control */ 53414752412STakashi Iwai 5354a9ce6e4SCezary Rojewski u64 curr_pos; 53614752412STakashi Iwai /* timestamp */ 53714752412STakashi Iwai unsigned long start_wallclk; /* start + minimum wallclk */ 53814752412STakashi Iwai unsigned long period_wallclk; /* wallclk for period */ 53914752412STakashi Iwai struct timecounter tc; 54014752412STakashi Iwai struct cyclecounter cc; 54114752412STakashi Iwai int delay_negative_threshold; 54214752412STakashi Iwai 54314752412STakashi Iwai struct list_head list; 5448f3f600bSTakashi Iwai #ifdef CONFIG_SND_HDA_DSP_LOADER 5458f3f600bSTakashi Iwai /* DSP access mutex */ 5468f3f600bSTakashi Iwai struct mutex dsp_mutex; 5478f3f600bSTakashi Iwai #endif 54814752412STakashi Iwai }; 54914752412STakashi Iwai 55014752412STakashi Iwai void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev, 55114752412STakashi Iwai int idx, int direction, int tag); 55214752412STakashi Iwai struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus, 55314752412STakashi Iwai struct snd_pcm_substream *substream); 554*ac3467adSPierre-Louis Bossart void snd_hdac_stream_release_locked(struct hdac_stream *azx_dev); 55514752412STakashi Iwai void snd_hdac_stream_release(struct hdac_stream *azx_dev); 5564308c9b0SJeeja KP struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus, 5574308c9b0SJeeja KP int dir, int stream_tag); 55814752412STakashi Iwai 55914752412STakashi Iwai int snd_hdac_stream_setup(struct hdac_stream *azx_dev); 56014752412STakashi Iwai void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev); 56114752412STakashi Iwai int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev); 56286f6501bSJeeja KP int snd_hdac_stream_set_params(struct hdac_stream *azx_dev, 56386f6501bSJeeja KP unsigned int format_val); 56414752412STakashi Iwai void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start); 56514752412STakashi Iwai void snd_hdac_stream_stop(struct hdac_stream *azx_dev); 56624ad3835SPierre-Louis Bossart void snd_hdac_stop_streams(struct hdac_bus *bus); 56712054f0cSPierre-Louis Bossart void snd_hdac_stop_streams_and_chip(struct hdac_bus *bus); 56814752412STakashi Iwai void snd_hdac_stream_reset(struct hdac_stream *azx_dev); 56914752412STakashi Iwai void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set, 57014752412STakashi Iwai unsigned int streams, unsigned int reg); 57114752412STakashi Iwai void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, 57214752412STakashi Iwai unsigned int streams); 57314752412STakashi Iwai void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev, 57414752412STakashi Iwai unsigned int streams); 5755dd3d271SSameer Pujar int snd_hdac_get_stream_stripe_ctl(struct hdac_bus *bus, 5765dd3d271SSameer Pujar struct snd_pcm_substream *substream); 5775dd3d271SSameer Pujar 57814752412STakashi Iwai /* 57914752412STakashi Iwai * macros for easy use 58014752412STakashi Iwai */ 58114752412STakashi Iwai /* read/write a register, pass without AZX_REG_ prefix */ 58214752412STakashi Iwai #define snd_hdac_stream_writel(dev, reg, value) \ 5834d024fe8STakashi Iwai snd_hdac_reg_writel((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 58414752412STakashi Iwai #define snd_hdac_stream_writew(dev, reg, value) \ 5854d024fe8STakashi Iwai snd_hdac_reg_writew((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 58614752412STakashi Iwai #define snd_hdac_stream_writeb(dev, reg, value) \ 5874d024fe8STakashi Iwai snd_hdac_reg_writeb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg, value) 58814752412STakashi Iwai #define snd_hdac_stream_readl(dev, reg) \ 5894d024fe8STakashi Iwai snd_hdac_reg_readl((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 59014752412STakashi Iwai #define snd_hdac_stream_readw(dev, reg) \ 5914d024fe8STakashi Iwai snd_hdac_reg_readw((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 59214752412STakashi Iwai #define snd_hdac_stream_readb(dev, reg) \ 5934d024fe8STakashi Iwai snd_hdac_reg_readb((dev)->bus, (dev)->sd_addr + AZX_REG_ ## reg) 5943cab69d9SAmadeusz Sławiński #define snd_hdac_stream_readb_poll(dev, reg, val, cond, delay_us, timeout_us) \ 5953cab69d9SAmadeusz Sławiński readb_poll_timeout((dev)->sd_addr + AZX_REG_ ## reg, val, cond, \ 5963cab69d9SAmadeusz Sławiński delay_us, timeout_us) 5973cab69d9SAmadeusz Sławiński #define snd_hdac_stream_readl_poll(dev, reg, val, cond, delay_us, timeout_us) \ 5983cab69d9SAmadeusz Sławiński readl_poll_timeout((dev)->sd_addr + AZX_REG_ ## reg, val, cond, \ 5993cab69d9SAmadeusz Sławiński delay_us, timeout_us) 60014752412STakashi Iwai 60114752412STakashi Iwai /* update a register, pass without AZX_REG_ prefix */ 60214752412STakashi Iwai #define snd_hdac_stream_updatel(dev, reg, mask, val) \ 60314752412STakashi Iwai snd_hdac_stream_writel(dev, reg, \ 60414752412STakashi Iwai (snd_hdac_stream_readl(dev, reg) & \ 60514752412STakashi Iwai ~(mask)) | (val)) 60614752412STakashi Iwai #define snd_hdac_stream_updatew(dev, reg, mask, val) \ 60714752412STakashi Iwai snd_hdac_stream_writew(dev, reg, \ 60814752412STakashi Iwai (snd_hdac_stream_readw(dev, reg) & \ 60914752412STakashi Iwai ~(mask)) | (val)) 61014752412STakashi Iwai #define snd_hdac_stream_updateb(dev, reg, mask, val) \ 61114752412STakashi Iwai snd_hdac_stream_writeb(dev, reg, \ 61214752412STakashi Iwai (snd_hdac_stream_readb(dev, reg) & \ 61314752412STakashi Iwai ~(mask)) | (val)) 61414752412STakashi Iwai 6158f3f600bSTakashi Iwai #ifdef CONFIG_SND_HDA_DSP_LOADER 6168f3f600bSTakashi Iwai /* DSP lock helpers */ 6178f3f600bSTakashi Iwai #define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) 6188f3f600bSTakashi Iwai #define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) 6198f3f600bSTakashi Iwai #define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) 6208f3f600bSTakashi Iwai #define snd_hdac_stream_is_locked(dev) ((dev)->locked) 6218f3f600bSTakashi Iwai /* DSP loader helpers */ 6228f3f600bSTakashi Iwai int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 6238f3f600bSTakashi Iwai unsigned int byte_size, struct snd_dma_buffer *bufp); 6248f3f600bSTakashi Iwai void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start); 6258f3f600bSTakashi Iwai void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 6268f3f600bSTakashi Iwai struct snd_dma_buffer *dmab); 6278f3f600bSTakashi Iwai #else /* CONFIG_SND_HDA_DSP_LOADER */ 6288f3f600bSTakashi Iwai #define snd_hdac_dsp_lock_init(dev) do {} while (0) 6298f3f600bSTakashi Iwai #define snd_hdac_dsp_lock(dev) do {} while (0) 6308f3f600bSTakashi Iwai #define snd_hdac_dsp_unlock(dev) do {} while (0) 6318f3f600bSTakashi Iwai #define snd_hdac_stream_is_locked(dev) 0 6328f3f600bSTakashi Iwai 6338f3f600bSTakashi Iwai static inline int 6348f3f600bSTakashi Iwai snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format, 6358f3f600bSTakashi Iwai unsigned int byte_size, struct snd_dma_buffer *bufp) 6368f3f600bSTakashi Iwai { 6378f3f600bSTakashi Iwai return 0; 6388f3f600bSTakashi Iwai } 6398f3f600bSTakashi Iwai 6408f3f600bSTakashi Iwai static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start) 6418f3f600bSTakashi Iwai { 6428f3f600bSTakashi Iwai } 6438f3f600bSTakashi Iwai 6448f3f600bSTakashi Iwai static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev, 6458f3f600bSTakashi Iwai struct snd_dma_buffer *dmab) 6468f3f600bSTakashi Iwai { 6478f3f600bSTakashi Iwai } 6488f3f600bSTakashi Iwai #endif /* CONFIG_SND_HDA_DSP_LOADER */ 6498f3f600bSTakashi Iwai 6508f3f600bSTakashi Iwai 65171fc4c7eSTakashi Iwai /* 65271fc4c7eSTakashi Iwai * generic array helpers 65371fc4c7eSTakashi Iwai */ 65471fc4c7eSTakashi Iwai void *snd_array_new(struct snd_array *array); 65571fc4c7eSTakashi Iwai void snd_array_free(struct snd_array *array); 65671fc4c7eSTakashi Iwai static inline void snd_array_init(struct snd_array *array, unsigned int size, 65771fc4c7eSTakashi Iwai unsigned int align) 65871fc4c7eSTakashi Iwai { 65971fc4c7eSTakashi Iwai array->elem_size = size; 66071fc4c7eSTakashi Iwai array->alloc_align = align; 66171fc4c7eSTakashi Iwai } 66271fc4c7eSTakashi Iwai 66371fc4c7eSTakashi Iwai static inline void *snd_array_elem(struct snd_array *array, unsigned int idx) 66471fc4c7eSTakashi Iwai { 66571fc4c7eSTakashi Iwai return array->list + idx * array->elem_size; 66671fc4c7eSTakashi Iwai } 66771fc4c7eSTakashi Iwai 66871fc4c7eSTakashi Iwai static inline unsigned int snd_array_index(struct snd_array *array, void *ptr) 66971fc4c7eSTakashi Iwai { 67071fc4c7eSTakashi Iwai return (unsigned long)(ptr - array->list) / array->elem_size; 67171fc4c7eSTakashi Iwai } 67271fc4c7eSTakashi Iwai 673a9c2dfc8STakashi Iwai /* a helper macro to iterate for each snd_array element */ 674a9c2dfc8STakashi Iwai #define snd_array_for_each(array, idx, ptr) \ 675a9c2dfc8STakashi Iwai for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \ 676a9c2dfc8STakashi Iwai (ptr) = snd_array_elem(array, ++(idx))) 677a9c2dfc8STakashi Iwai 678e3d280fcSTakashi Iwai #endif /* __SOUND_HDAUDIO_H */ 679